From 978c5abf82889771dedefdaba27e9c6ad666ddcf Mon Sep 17 00:00:00 2001
From: Arnaud Bailly <arnaud.bailly@iohk.io>
Date: Thu, 7 Dec 2023 21:21:44 +0000
Subject: [PATCH] deploy: 6eccbf36dd147b286519204b279cd514ad2c465f

---
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-08-12T00:00:00.000Z" itemprop="datePublished">August 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The networking team took an active part in the project iteration (PI) planning
+session, see cardano-node <a href="https://github.com/orgs/input-output-hk/projects/39" target="_blank" rel="noopener noreferrer">backlog</a> for detailed
+outcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/3859" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3859</a> which
+sets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3852" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3852</a>.
+The above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and
+identified some deployment hiccups.  We identified some bugs in the RT view
+which were registered by the maintainers.
+<a href="https://github.com/input-output-hk/ouroboros-network-ops/pull/4" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3921" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3922" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to
+identify and fix a bug in the simulator.  The simulation contains 50 nodes.
+Dashed lines indicate and established connection, while solid lines indicate
+a TCP connection with fully open TCP window.</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-08-12-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-08-31-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra
+with Cicero, and a new version of Spongix.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">OpenZiti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href="https://github.com/input-output-hk/bitte/compare/zt" target="_blank" rel="noopener noreferrer">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href="https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994" target="_blank" rel="noopener noreferrer">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,
+we&#x27;re making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte
+clusters utilizing a Ziti ZTNA network overlay to bridge the networking of
+the two environments and get IAM extension to Equinix machine for Nomad
+client onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,
+Controller, Edge Tunnel, and Router is now at [<a href="https://github.com/johnalotoski/openziti-bins" target="_blank" rel="noopener noreferrer">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with
+no issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and
+controller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul
+services</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-integrations">Cicero &amp; Tullia Integrations<a class="hash-link" href="#cicero--tullia-integrations" title="Direct link to heading">​</a></h3><ul><li>Added webhook for [<a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href="https://github.com/input-output-hk/cardano-addresses/pull/205" target="_blank" rel="noopener noreferrer">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href="https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946" target="_blank" rel="noopener noreferrer">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href="https://github.com/input-output-hk/abcirdc/pull/104" target="_blank" rel="noopener noreferrer">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href="https://github.com/input-output-hk/cicero/pull/66" target="_blank" rel="noopener noreferrer">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href="https://github.com/input-output-hk/plutus" target="_blank" rel="noopener noreferrer">plutus</a>]
+[<a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer">cardano-prelude</a>], and [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>].</li><li>Merged [<a href="https://github.com/input-output-hk/cardano-base/pull/323" target="_blank" rel="noopener noreferrer">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href="https://github.com/input-output-hk/cardano-ogmios/pull/5" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-explorer-app/pull/427" target="_blank" rel="noopener noreferrer">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3097" target="_blank" rel="noopener noreferrer">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-node/pull/4489" target="_blank" rel="noopener noreferrer">cardano-node-pull-4489</a>] to add Tullia and Cicero, including
+OS-agnostic jobs.</li><li>Opened [<a href="https://github.com/input-output-hk/ouroboros-network/pull/4108" target="_blank" rel="noopener noreferrer">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href="https://github.com/input-output-hk/plutus/pull/4918" target="_blank" rel="noopener noreferrer">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href="https://github.com/input-output-hk/abcirdc/pull/97" target="_blank" rel="noopener noreferrer">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-features">Cicero &amp; Tullia Features<a class="hash-link" href="#cicero--tullia-features" title="Direct link to heading">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>] build
+correctly.</li><li>Better tullia CUE lib default for tags [<a href="https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245" target="_blank" rel="noopener noreferrer">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>&#x27;s upstreams. This is now
+considered a public cache again, and without it some Cicero evaluations had
+to build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in
+JSON files.</li><li>Fixed running into kernel arg limit by reading tullia&#x27;s DAG from a file</li><li>Merged [<a href="https://github.com/input-output-hk/tullia/pull/9" target="_blank" rel="noopener noreferrer">tullia-pull-9</a>] that fixes several issues related to error reporting.
+and escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports
+the full HTTP binary cache protocol but still lacks comprehensive testing and
+some tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so
+Spongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugs">Bugs<a class="hash-link" href="#bugs" title="Direct link to heading">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status
+to get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for
+codependent actions.</li><li>Fixed tullia task order bug in [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href="https://github.com/input-output-hk/tullia/pull/7" target="_blank" rel="noopener noreferrer">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href="https://github.com/input-output-hk/bitte-cells/pull/40" target="_blank" rel="noopener noreferrer">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related
+to token rotation.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-28-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; Tracing Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-27-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#openziti" class="table-of-contents__link toc-highlight">OpenZiti</a></li><li><a href="#cicero--tullia-integrations" class="table-of-contents__link toc-highlight">Cicero &amp; Tullia Integrations</a></li><li><a href="#cicero--tullia-features" class="table-of-contents__link toc-highlight">Cicero &amp; Tullia Features</a></li><li><a href="#spongix" class="table-of-contents__link toc-highlight">Spongix</a></li><li><a href="#bugs" class="table-of-contents__link toc-highlight">Bugs</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-08-31T00:00:00.000Z" itemprop="datePublished">August 31, 2022</time> · <!-- -->9 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A
+possible bug was identified. Work is ongoing to make sure the property-tests
+cover all the relevant cases.</li><li>We implemented and benchmarked the &quot;anti-diff&quot; prototype to speed up the UTxO
+HD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across
+several scenarios. Note that: <a href="https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html" target="_blank" rel="noopener noreferrer">&quot;Data reported by <code>tasty-bench</code> is only of
+indicative and comparative significance.&quot;</a>.
+We are investigating additional performance improvements. The &quot;anti-diff&quot;
+prototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and
+<code>ChainSync</code> jumping optimization.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3962" target="_blank" rel="noopener noreferrer">Issue #3963</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">PR
+#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which
+data should be changed in the Conway era. As a result, a new technical debt
+issue was raised, which does not block the integration of the Conway era
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3976" target="_blank" rel="noopener noreferrer">Issue #3976</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3954" target="_blank" rel="noopener noreferrer">Issue #3954</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests" target="_blank" rel="noopener noreferrer">branch</a>: The functionality of a
+backing store, which is the interface to the on-disk part of ledger state in
+UTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some
+functionalities remain untested, e.g., reads of ranges of keys. As such, we
+have implemented <code>quickcheck-state-machine</code> tests that exercise backing stores
+directly. The tests are reusable for different backing store implementations
+because the tests are implementation-agnostic: Any backing store that conforms
+to the backing store interface can be plugged into the tests. Work is still
+ongoing to label/monitor the tests, such that we can verify that interesting
+cases are being tested. Furthermore, a possible bug has been identified in the
+LMDB backing store with respect to range reads, though the bug has not been
+resolved yet.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3946" target="_blank" rel="noopener noreferrer">Issue #3946</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs" target="_blank" rel="noopener noreferrer">branch</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3882" target="_blank" rel="noopener noreferrer">PR #3882</a>: The
+&quot;anti-diff&quot; prototype proposes an alternative approach to keeping track of
+sequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences
+are a component of the in-memory parts of the ledger state in UTxO-HD. Since
+the consensus code often requires the cumulative diff of a sequence of diffs,
+the current implementation &quot;caches&quot; cumulative diffs of each subtree in the
+diff sequence. This caching allows relatively fast reconstruction of the total
+cumulative diff, but this caching proved to incur a non-negligible cost: when
+we manipulate diff sequences through splits and appends, we force re-computing
+a logarithmic number of caches. This is problematic, since we often split and
+append in consensus: we split when we flush diffs to a backing store or when
+we roll back blocks, and we append when pushing blocks. The new approach
+should reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the &quot;anti-diff&quot; prototype: we
+first generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or
+<code>Rollback</code>) through a simulation, after which we measure the performance of
+applying the commands to a diff sequence. In this context, <code>Forward</code> means
+forwarding of values through a diff, whereas <code>Rollback</code> means switching to
+a different fork by rolling back diffs/blocks and pushing new ones.
+Moreover, we compare the performance for the two implementations: the
+&quot;legacy&quot; approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the
+benchmark&#x27;s configuration to obtain more definitive results. After a
+discussion with @dcoutts and the consensus team about this configuration
+(e.g., number of commands generated, choice of the security parameter <code>k</code>),
+the benchmarks should now be closer to the realistic setting. The following
+configuration specifies the default configuration that is used in the
+benchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-read-results">How to read results<a class="hash-link" href="#how-to-read-results" title="Direct link to heading">​</a></h3><p>Note: this section uses documentation from the
+<a href="https://hackage.haskell.org/package/tasty-bench" target="_blank" rel="noopener noreferrer">tasty-bench</a> package to
+explain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AntiDiff:                               OK (18.27s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">LegacyDiff:                             OK (32.73s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff
+prototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),
+its predicted mean CPU time was <code>2.527</code> seconds and means of individual
+samples do not often diverge from it further than <code>± 47</code> milliseconds
+(double standard deviation). We also configure the RTS to collect GC
+statistics, which enables <code>tasty-bench</code> to estimate and report memory usage.
+This data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,
+<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first
+benchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a
+total of <code>544 MB</code> of memory were copied, and that the peak memory in usage
+was <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for
+both the anti-diff and legacy approaches: In this case, the mean CPU time
+for the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy
+approach. Conversely, the mean CPU time for the legacy approach is
+<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will
+call <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to
+noise, randomness, the specific configuration parameters, and the whims
+of statistics. Data reported by <code>tasty-bench</code> is only of indicative and
+comparative significance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="results">Results<a class="hash-link" href="#results" title="Direct link to heading">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and
+legacy approaches 5 times. We run the benchmarks 5 times to get an indication
+of whether the results are similar across multiple runs. Furthermore, we
+calculate the accompanying <em>ranges</em> (if applicable) of improvement factors and
+speedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for
+the anti-diff approach compared to the legacy approach.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="default-configuration">Default configuration<a class="hash-link" href="#default-configuration" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks">No rollbacks<a class="hash-link" href="#no-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="only-small-rollbacks">Only small rollbacks<a class="hash-link" href="#only-small-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks-larger-flushes-every-100-pushes">No rollbacks, larger flushes (every 100 pushes)<a class="hash-link" href="#no-rollbacks-larger-flushes-every-100-pushes" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and
+the ChainSync Jumping optimization. In particular, this includes a proof
+sketch that the latter preserves liveness and safety in all cases (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3964" target="_blank" rel="noopener noreferrer">Issue
+3964</a>).<ul><li>@nfrisby&#x27;s main realization during this sprint was that he had been
+focusing so far on the case where the selected chain is an extension of
+the intersection of our peers&#x27; ChainSync candidates.</li><li>This is the main case, ie an &quot;absorbing&quot; state, but it&#x27;s not the only
+case.</li><li>The new proof sketch begins by case splitting on that predicate, and
+that made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the &quot;happy path&quot; <code>ChainSync</code> Jumping prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3960" target="_blank" rel="noopener noreferrer">Issue
+3960</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..
+Nightly CI runs have far more lax time constraints, which gives the option to
+run significantly more property tests than in our regular CI. To this end, we
+merged a PR to easily adapt the number of tests globally (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3947" target="_blank" rel="noopener noreferrer">PR
+#3947</a>).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-08-31-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-01-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-08-12-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#executive-summary" class="table-of-contents__link toc-highlight">Executive summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#conway" class="table-of-contents__link toc-highlight">Conway</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO HD</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been
+focused on two main things: a new ledger era and technical debt.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-minimal-ledger-era">New minimal ledger era<a class="hash-link" href="#new-minimal-ledger-era" title="Direct link to heading">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical
+to the <code>babbage</code> era. This has been the first time that we have been able to see
+what a minimal ledger era looks like. We have finished this task, modulo any
+integration issues that might come up. The only thing that the <code>conway</code> era
+does differently from the <code>babbage</code> era is provide support for rotating
+the master keys using the hardfork combinator&#x27;s state translation.
+We may end up adding features to the <code>conway</code> era, but it is a nice exercise
+seeing what it looks like to get a minimal ledger era supported in all the
+downstream components.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="addressing-technical-debt">Addressing technical debt<a class="hash-link" href="#addressing-technical-debt" title="Direct link to heading">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the
+repository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.
+With hindsight on our side, we now have something much more organized and
+easier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more
+uniform, avoid certain confusions that plagued us, and are clearer in where
+they are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you
+do not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of
+values that can be minted in a transaction no longer allow for Lovelace
+in the type, and some functions which used to handle both timelock scripts
+and plutus script now correctly enoforce at the type level that only one of
+them can be used.</li><li>We made our generators so that they now produce a much richer set of
+valid serializations. There is room within CBOR to serialize the same
+data structure in multiple ways, and it is helpful to have the generators
+use a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-01-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-16-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-08-31-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#ledger-update" class="table-of-contents__link toc-highlight">Ledger Update</a><ul><li><a href="#new-minimal-ledger-era" class="table-of-contents__link toc-highlight">New minimal ledger era</a></li><li><a href="#addressing-technical-debt" class="table-of-contents__link toc-highlight">Addressing technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-09-16T00:00:00.000Z" itemprop="datePublished">September 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3032" target="_blank" rel="noopener noreferrer">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of
+confusion), and added some related support to the fledgling ledger API.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3016" target="_blank" rel="noopener noreferrer">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3017" target="_blank" rel="noopener noreferrer">3017</a>.</li><li>We removed code duplication related to the input data hashes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3018" target="_blank" rel="noopener noreferrer">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our
+CI to time out.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3020" target="_blank" rel="noopener noreferrer">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3023" target="_blank" rel="noopener noreferrer">3023</a>,
+<a href="https://github.com/input-output-hk/cardano-ledger/pull/3031" target="_blank" rel="noopener noreferrer">3031</a>,
+and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3028" target="_blank" rel="noopener noreferrer">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3024" target="_blank" rel="noopener noreferrer">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific
+choice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3027" target="_blank" rel="noopener noreferrer">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric
+types that will compose better in the future and which simplifies the constraints.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3029" target="_blank" rel="noopener noreferrer">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a
+given transaction. This is a much needed cleanup to prevent future mistakes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3019" target="_blank" rel="noopener noreferrer">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to
+fail in CI.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major
+protocol version, and also address a
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">problem</a>
+that we current have evolving the cost models.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3030" target="_blank" rel="noopener noreferrer">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely
+the lack of some serialization instances.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3022" target="_blank" rel="noopener noreferrer">3022</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-16-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-19-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-01-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#ledger-update" class="table-of-contents__link toc-highlight">Ledger Update</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB Sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-09-19T00:00:00.000Z" itemprop="datePublished">September 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tag">New Tag<a class="hash-link" href="#new-tag" title="Direct link to heading">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last
+release 13.0.4. It is currently under testing.
+The Changelog is
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305" target="_blank" rel="noopener noreferrer">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn&#x27;t include a total collateral field.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1248" target="_blank" rel="noopener noreferrer">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1247" target="_blank" rel="noopener noreferrer">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but
+could result in the wrong CBOR encoding being inserted.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1217" target="_blank" rel="noopener noreferrer">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs
+for different networks, these are directly fetched from the cardano world.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1254" target="_blank" rel="noopener noreferrer">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1260" target="_blank" rel="noopener noreferrer">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made the db-sync <a href="https://github.com/orgs/input-output-hk/projects/52/views/1" target="_blank" rel="noopener noreferrer">board public</a>, so
+everyone can have access on the issues we prioritise.
+We also added new tasks to the board, some of them could be approachable to newcomers or people who
+want to contribute.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-tech-debt-and-new-features">Progress on tech debt and new features<a class="hash-link" href="#progress-on-tech-debt-and-new-features" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1223" target="_blank" rel="noopener noreferrer">1223</a> was merged, which removes the
+foreign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1250" target="_blank" rel="noopener noreferrer">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>.
+This allows db-sync to restart much faster, without the need to delete data and reinsert them. In
+the future it can also facilitate migrations in cases where the ledger snapshots have a breaking
+change, without the need to resync everything from genesis.</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-19-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-20-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-16-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#dbsync-update" class="table-of-contents__link toc-highlight">DBSync Update</a><ul><li><a href="#new-tag" class="table-of-contents__link toc-highlight">New Tag</a></li><li><a href="#open-source" class="table-of-contents__link toc-highlight">Open source</a></li><li><a href="#progress-on-tech-debt-and-new-features" class="table-of-contents__link toc-highlight">Progress on tech debt and new features</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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+<title data-rh="true">Consensus Team Update | Cardano Development Updates</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="Consensus Team Update | Cardano Development Updates"><meta data-rh="true" name="description" content="- We proposed a fix for the performance degradation observed when running"><meta data-rh="true" property="og:description" content="- We proposed a fix for the performance degradation observed when running"><meta data-rh="true" property="og:type" content="article"><meta data-rh="true" property="article:published_time" content="2022-09-20T00:00:00.000Z"><meta data-rh="true" property="article:author" content="https://github.com/dnadales"><meta data-rh="true" property="article:tag" content="consensus"><link data-rh="true" rel="icon" href="/cardano-updates/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus" hreflang="en"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus" hreflang="x-default"><link rel="alternate" type="application/rss+xml" href="/cardano-updates/rss.xml" title="Cardano Updates Feed RSS Feed">
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>We proposed a fix for the performance degradation observed when running
+distributed multi-node benchmarks in the UTxO HD feature branch. While this
+fixed the problems observed when running local benchmarks, it broke the
+<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to
+start redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of
+diff-sequences required by the UTxO HD feature based on the idea of
+anti-diffs. This alternative implementation is close to being merged, and the
+next step is to integrate this to the UTxO HD branch, so that we can run
+ad-hoc replaying and syncing from scratch benchmarks and compare these with
+the baseline. The micro-benchmarks we elaborated for the alternative
+implementation show speedups of up to 4x, so we are optimistic about the
+performance of replaying and syncing from scratch benchmarks, however it is
+important to notice that <em>due to the nature of UTxO HD</em> we will still be
+slower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for
+review.</li><li>We implemented a prototype for the happy path of Genesis&#x27; ChainSync Jumping
+(CSJ). The prototype is slower than the baseline, however it is not the latest
+version of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031" target="_blank" rel="noopener noreferrer">stopped</a> since
+priorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pr-4014</a>. To this end, we made use of a modified version of our
+<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano
+mainnet chain, and we can see that block tick and application take
+substantially longer at epoch boundaries, although there are a couple of slots
+during an epoch in which these computations take more than normal. We notified
+the ledger team about these findings. We will use this modified version of
+<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in
+performance observed in the benchmarks. We run the <code>make forge-stress</code>
+benchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn&#x27;t make a notable difference in the outcome
+(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction
+validation which is a violation of the <code>LocalTxSubmission</code> protocol
+contract and therefore if we continued on that route, the impact would
+have been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal
+state was buggy and under certain circumstances it seemed to lock.
+Reverting the mempool internal state to be stored in a <code>TVar</code> seems to
+solve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones
+from the baseline.</p></li></ul></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/3997" target="_blank" rel="noopener noreferrer">The anti-diff prototype (PR
+#3997)</a> has
+been reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4010" target="_blank" rel="noopener noreferrer">issue
+#4010</a>)
+to integrate the anti-diff prototype in the various <code>consensus</code> packages
+was created. A first version of the integration exists, and all tests
+pass. A next step is to get some indication of the &quot;real&quot; performance gain
+by profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync
+Jumping (CSJ) prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3987" target="_blank" rel="noopener noreferrer">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)
+number of servers periodically while syncing. These servers are offered
+jump requests via the ChainSync protocol (hence the name), which they can
+accept or decline. If a peer declines, the Genesis rule allows us to
+determine whether a node actually has a better chain.</p></li><li><p>The &quot;happy path&quot; is when no peer declines a jump. We want this to have
+close to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to
+test in various configurations (number of peers, latency, bandwidth) to
+tune the performance of ChainSync jumping, i.e. how complicated our logic
+of choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to
+<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg" width="654" height="459" class="img_ev3q"></p><p>It is slower by about ~30%, but it is not the latest version of the
+prototype, and the jump interval is very small, making CSJ more of a
+bottleneck.</p></li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3990" target="_blank" rel="noopener noreferrer">PR 3990</a>).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-20-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-27-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-19-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO HD</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See
+<a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in
+progress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3980" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3905" target="_blank" rel="noopener noreferrer">issue input-output-hk/cardano-node#3905</a> in
+the simulation testing of diffusion
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4004" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.
+When deploying we found an issue in the
+<a href="https://github.com/input-output-hk/cardano-node/issues/3752" target="_blank" rel="noopener noreferrer"><code>RTView</code></a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-consensus">Ouroboros Consensus<a class="hash-link" href="#ouroboros-consensus" title="Direct link to heading">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during
+intiialisation.  This was fixed in
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#4015</a>
+As part of this pull request we also changed that all exceptions rethrown by
+the connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="some-older-items-which-were-not-announced">Some older items, which were not announced<a class="hash-link" href="#some-older-items-which-were-not-announced" title="Direct link to heading">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options
+where not set for sockets passed through socket activation).
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#3979</a>
+This fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,
+<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,
+<code>traceSocketPathConnect</code> and <code>stateDir</code> options.
+<a href="https://github.com/input-output-hk/cardano-node/pull/4196" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2797" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2797</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2650" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2650</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3436" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#3436</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2588" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2588</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2587" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2587</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2586" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href="https://github.com/input-output-hk/io-sim/pull/24" target="_blank" rel="noopener noreferrer">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href="https://github.com/input-output-hk/io-sim/pull/25" target="_blank" rel="noopener noreferrer">PR input-output-hk/io-sim#25</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:
+<a href="https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem" target="_blank" rel="noopener noreferrer">coot/typed-protocols-rewrite-StateToken-problem</a>.
+That&#x27;s too be resolved in order to push forward review of the redesign in
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:
+<a href="https://github.com/input-output-hk/typed-protocols/pull/11" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="input-endorsers-simulation">Input Endorsers Simulation<a class="hash-link" href="#input-endorsers-simulation" title="Direct link to heading">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU
+(block validation). This is interesting to check that we&#x27;re not overloading
+the CPU block validation capacity, or network link capacity. Or alternatively
+to observe the behaviour in an overload situation if we set the block
+generation rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of
+links are being used at any one time, and shows that once the system &quot;warms
+up&quot; and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple
+charts, titles etc on screen at once and scale them to whatever screen or
+video resolution we like without having to tweak numbers (this example is
+scaled to fit 1080HD video resolution).</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-27-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-09-30-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-20-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-update" class="table-of-contents__link toc-highlight">Network Update</a><ul><li><a href="#ouroboros-network" class="table-of-contents__link toc-highlight">Ouroboros Network</a></li><li><a href="#ouroboros-consensus" class="table-of-contents__link toc-highlight">Ouroboros Consensus</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">Cardano Node</a></li><li><a href="#io-sim" class="table-of-contents__link toc-highlight">IO-Sim</a></li><li><a href="#typed-protocols" class="table-of-contents__link toc-highlight">Typed Protocols</a></li><li><a href="#input-endorsers-simulation" class="table-of-contents__link toc-highlight">Input Endorsers Simulation</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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+A lot of design work has begun for the next ledger era,
+but we do not yet have anything concrete to share.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-issues-completed">Technical debt issues completed<a class="hash-link" href="#technical-debt-issues-completed" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/1676" target="_blank" rel="noopener noreferrer">issue-1676</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>] We have finally removed the ledger dependency on the
+<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency
+that we did not want to maintain. It was a bit difficult to remove, and we had
+to coordinate removing it from cardano-base.
+A lot ended up going into <a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>, due to the coordination effort, and we ended
+up updating Plutus as well.
+This means that we&#x27;ve now also made a lot of progress on the problematic cost model serialization
+issues described in <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+In particular, after we resolve <a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>, we will not have to wait an epoch before
+releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3046" target="_blank" rel="noopener noreferrer">issue-3046</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3055" target="_blank" rel="noopener noreferrer">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3047" target="_blank" rel="noopener noreferrer">issue-3047</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3054" target="_blank" rel="noopener noreferrer">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3044" target="_blank" rel="noopener noreferrer">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates
+were adding approximately 20 minutes to our compile time!</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2932" target="_blank" rel="noopener noreferrer">issue-2932</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3036" target="_blank" rel="noopener noreferrer">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we
+have added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.
+Most classes defined in the era should go in this new module.
+We also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>
+modules from each era.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-in-progress">Technical debt in progress<a class="hash-link" href="#technical-debt-in-progress" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3034" target="_blank" rel="noopener noreferrer">issue-3034</a>][<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>][<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where
+all the time is being spent on executing the <code>TICKF</code> transition.
+The consolidation of the per-stake-credential stake distribution to the per-stake-pool
+distribution does seem to account for a large amount of time (near a second as written, which we
+have down to about half a second with some optimizations),
+but this does not account for everything.
+Applying the reward update may also be a big contributing factor.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3033" target="_blank" rel="noopener noreferrer">pull-3033</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3038" target="_blank" rel="noopener noreferrer">pull-3038</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3041" target="_blank" rel="noopener noreferrer">pull-3041</a>] A separate team is working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>
+do not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger
+serializers.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-30-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-04-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-27-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#ledger-update" class="table-of-contents__link toc-highlight">Ledger Update</a><ul><li><a href="#technical-debt-issues-completed" class="table-of-contents__link toc-highlight">Technical debt issues completed</a></li><li><a href="#technical-debt-in-progress" class="table-of-contents__link toc-highlight">Technical debt in progress</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the
+UTxO HD prototype. We completed the era-transition and backing store tests, and
+the mempool tests are advancing at a steady pace. Regarding our work in the
+Genesis design, we continued our collaboration with the research and networking
+teams, and we continue investigating strategies for making the chain-sync
+jumping prototype faster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs
+in the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to
+incorporate the improvements to the LMDB cursor API that these tests
+made possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and
+the networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping
+prototype. We gained additional insight on which parameters to tweak next.
+In spite of the baseline still being faster, the current prototype already
+achieves a significant speedup when compared to the naive approach of simply
+running full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular
+we merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4073" target="_blank" rel="noopener noreferrer">era-transition tests
+PR</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">backing store property tests
+PR</a> has been
+reviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting
+test cases.</li></ul><p>The <a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">monadic cursor API</a>
+went through its first review round. The API is in a relatively stable state.
+This PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB
+operations. The next steps are:</p><ul><li>Write
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+state-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property
+tests. This will involve adding boilerplate code in consensus to make up for
+the removal of the <code>cborg</code>-based interface.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h2><p>We worked on the <a href="https://github.com/input-output-hk/ouroboros-network/issues/4121" target="_blank" rel="noopener noreferrer">LSM tree
+prototype</a>. In
+particular, we focused on tuning the LSM tree design to the different workloads
+that consensus has (eg syncing, normal node operation, etc).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular
+we compared the performance of different jump intervals, which, somewhat
+surprisingly, do not make a significant difference. In particular, we are seeing
+periodic &quot;plateaus&quot; where the chain-sync tip does not progress, but they are
+much longer for the prototype. Our hypothesis is that this seem to be due to a
+combination of the garbage collector (GC) pauses, and the actual time it takes
+the non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo
+fragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of
+tweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype
+using different jumping intervals. It compares the syncing progress by plotting
+the slots of adopted blocks against time. The baseline is still faster, however
+it is worth noting that the current prototype already achieves a significant
+speedup when compared to the naive approach of simply running full chain-sync
+with all peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg" width="998" height="445" class="img_ev3q"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,
+and includes, in addition to the slots of adopted blocks, the slots of the tip
+of the ChainSync fragment. This allows us to see how far ahead of the selected
+tip the CS dynamo is, i.e. how much room we have for BlockFetch not to get
+stalled. It shows periodic behaviour (due to the forecasting limit), and shows
+that the CS fragment tip is not progressing for significant periods
+(&quot;plateaus&quot;).</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg" width="998" height="445" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4098" target="_blank" rel="noopener noreferrer">clarified</a> a
+common source of confusion around VRF tie-breaking and cross-era chain
+selection. This PR involved correcting potentially misleading names of
+VRF-related functions, and providing context for a particular VRF value is
+used for tie-breaking.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-03-embedding-quality"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Embedding Quality Workstream</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-02-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#high-level-status-report" class="table-of-contents__link toc-highlight">High-level status report</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#finish-the-utxo-hd-prototype" class="table-of-contents__link toc-highlight">Finish the UTxO HD prototype</a></li></ul></li><li><a href="#lsm-tree-implementation" class="table-of-contents__link toc-highlight">LSM tree implementation</a><ul><li><a href="#benchmarking-the-csj-prototype" class="table-of-contents__link toc-highlight">Benchmarking the CSJ prototype</a></li></ul></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB Sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fast-restarts">Fast restarts<a class="hash-link" href="#fast-restarts" title="Direct link to heading">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>. This has been
+one of db-sync main objectives for this period. Restarts are now very fast,
+because db-sync deletes almost nothing from the db, it just replays the ledger rules until it
+reaches the tip of the db. The fix also improves reconnection speed, in cases where the node
+restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a
+deployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="property-based-testing">Property based testing<a class="hash-link" href="#property-based-testing" title="Direct link to heading">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1269" target="_blank" rel="noopener noreferrer">1269</a>. These tests use empty or
+almost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">RollForward Int</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RollBack BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StopDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StartDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RestartNode</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AssertBlockNo BlockNo</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block
+that fits on the current chain. These real commands are executed against db-sync using the mock
+chain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync
+which looks like this:</p><div class="language-haskell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-haskell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">  Model</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    { serverTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSyncTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsIsOn :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsHasSynced :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    }</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We handled a number of tech debt in
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1275" target="_blank" rel="noopener noreferrer">1275</a>
+This improves the code format of db-sync, deletes many queries that were never used and groups the
+others. This tech debt resolution not only improves the experience of working in db-sync, but can
+facilitate some of our other objectives, as it makes it very explicit which queries are used
+during syncing and which indexes are necessary.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="smash">Smash<a class="hash-link" href="#smash" title="Direct link to heading">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1276" target="_blank" rel="noopener noreferrer">1276</a>.
+The issue which is described in
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1270" target="_blank" rel="noopener noreferrer">1270</a></p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-04-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-05-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-04-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#dbsync-update" class="table-of-contents__link toc-highlight">DBSync Update</a><ul><li><a href="#fast-restarts" class="table-of-contents__link toc-highlight">Fast restarts</a></li><li><a href="#property-based-testing" class="table-of-contents__link toc-highlight">Property based testing</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech Debt</a></li><li><a href="#smash" class="table-of-contents__link toc-highlight">Smash</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-update">Node-Api-Cli Update<a class="hash-link" href="#node-api-cli-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-04---2022-10-18">2022-10-04 - 2022-10-18<a class="hash-link" href="#2022-10-04---2022-10-18" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The majority of the team&#x27;s time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4504" target="_blank" rel="noopener noreferrer">GHC 9.2.4 preparations</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h4><ul><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4491" target="_blank" rel="noopener noreferrer">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4501" target="_blank" rel="noopener noreferrer">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4526" target="_blank" rel="noopener noreferrer">Fix MacOS GHA CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.34.4</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-04-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-04-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-09-30-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#node-api-cli-update" class="table-of-contents__link toc-highlight">Node-Api-Cli Update</a></li><li><a href="#2022-10-04---2022-10-18" class="table-of-contents__link toc-highlight">2022-10-04 - 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-05T00:00:00.000Z" itemprop="datePublished">October 5, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on improving the
+performance of the ChainSync jumping logic, which is needed for Genesis. We also
+rewrote the implementation of the mempool in the UTxO HD prototype which solved
+the issues that prevented us from running system level benchmarks. Also on the
+UTxO HD front, we have an improved implementation of the sequence-of-differences
+(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for
+the UTxO HD feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the
+baseline performance. In particular, the prototype seems to benefit from the
+extra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This
+rewrite was required due to performance problems we observed when running the
+<a href="https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51" target="_blank" rel="noopener noreferrer">workbench</a>.
+These performance problems prevented us from running system level benchmarks.
+The rewrite solved these issues. After the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">UTxO-HD: mempool
+rewrite</a> PR is
+merged, we will contact the Benchmarking team so that they run the system
+level benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was
+integrated into the UTxO HD prototype. It is pending
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4036" target="_blank" rel="noopener noreferrer">review</a> and
+we also need to run replay and syncing benchmarks to confirm that this will
+deliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3944" target="_blank" rel="noopener noreferrer">The UTxO HD prototype
+inspection</a>
+resulted in a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4045" target="_blank" rel="noopener noreferrer">list of
+tests</a>
+needed for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="additional-information">Additional information<a class="hash-link" href="#additional-information" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,
+we tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg" width="654" height="459" class="img_ev3q"></p><p>Further work includes whether we can tune the prototype to better handle few
+capabilities, or to adapt the default number of capabilities (potentially just
+while syncing).</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-05-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-14-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-04-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#executive-summary" class="table-of-contents__link toc-highlight">Executive summary</a></li><li><a href="#additional-information" class="table-of-contents__link toc-highlight">Additional information</a><ul><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks &quot;past the opening of a Head&quot;. We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Last week we thought we were done with <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> in response.</li><li>Enhanced CI to publish test results <a href="https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results" target="_blank" rel="noopener noreferrer">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href="https://github.com/input-output-hk/hydra-poc/issues/200" target="_blank" rel="noopener noreferrer">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-14-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-18-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-14-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team is still primarily focused on addressing
+<a href="https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22" target="_blank" rel="noopener noreferrer">technical</a>
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/3" target="_blank" rel="noopener noreferrer">debt</a>.
+We now have the infrastructure for versioning our serialization schemes,
+which we continue to put into action.
+We have made first steps towards getting proper support for the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+(in particular, we&#x27;ve added nix builds and
+continuous integration support).
+We are wrapping up an investigation of the performance of a critical
+function used by the consensus layer for leader checks.
+Finally, we are improving the packaging and versioning of our code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of
+our code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that
+much of it should live in <code>cardano-ledger-core</code>.
+We continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3059" target="_blank" rel="noopener noreferrer">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.
+The inability to do this has caused us a lot difficulties,
+such as [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>].
+We are still in the process of switching to the versioned serialization scheme
+(such as [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3078" target="_blank" rel="noopener noreferrer">pull-3078</a>]),
+but the infrastructure was completed in [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3063" target="_blank" rel="noopener noreferrer">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/19" target="_blank" rel="noopener noreferrer">pull-19</a>]</li><li>A separate team is helping bring support for
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>
+to all the cardano-node repositories.
+We have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4.
+We have been helping out with this effort.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress-technical-debt">In-progress Technical Debt<a class="hash-link" href="#in-progress-technical-debt" title="Direct link to heading">​</a></h3><p>We also have several fairly large pull-requests in review
+that we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,
+we continue to remove <code>HasField</code> instances in place of using micro-lenses.
+The protocol parameters, in particular, are being worked on. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3045" target="_blank" rel="noopener noreferrer">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3062" target="_blank" rel="noopener noreferrer">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance
+of the TICKF transition. We have some improvements to the computatation
+as well. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>]</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-14-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-14-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-05-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#completed-technical-debt" class="table-of-contents__link toc-highlight">Completed Technical Debt</a></li><li><a href="#in-progress-technical-debt" class="table-of-contents__link toc-highlight">In-progress Technical Debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for
+different aspects of the UTxO HD prototype: era transitions, mempool, and
+backing store. Thanks to these tests we were able to uncover a bug in the
+prototype. On the Genesis front, we benchmarked a different version of the
+ChainSync jumping prototype to try to improve its performance, but this did not
+result in any noticeable speedup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This
+uncovered a bug in the range-read implementation of the LMDB backing
+store.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that
+spreads out the ChainSync updates over a longer period of time. This did not
+result in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no
+conclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged
+the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">mempool
+rewrite</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="era-transition-property-tests">Era transition property tests<a class="hash-link" href="#era-transition-property-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4043" target="_blank" rel="noopener noreferrer">Cardano era transition property
+tests</a>,
+which are needed for making sure that the ledger tables get updated in the
+right way when we move from one era to the next. There are at the moment two
+important transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron
+state (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding
+the remaining ones.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="mempool-state-machine-tests">Mempool state-machine tests<a class="hash-link" href="#mempool-state-machine-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4044" target="_blank" rel="noopener noreferrer">state-machine property tests for the
+mempool</a>.
+The mempool is currently tested via pure property tests, and use a ledger
+state without tables. With the introduction of UTxO HD, testing the concurrent
+behavior of the mempool became of crucial importance (eg now we have to
+acquire locks to flush the backing store). In addition, we need to test a
+ledger state with tables. These needs led to the creation of a new set of
+property tests. In particular we aim to run parallel state-machine tests that
+exercise the mempool in a way similar to how the node would make use of it.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We started working on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">state-machine tests for the backing
+store</a> that UTxO
+HD uses. The property tests uncovered errors in the range-reads implementation
+of the LMDB backing store. To facilitate fixing this bug, we made
+<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">changes</a> to the Haskell
+LMDB bindings.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by
+using more capabilities, we implemented a way to spread out the ChainSync
+updates over a larger period instead of firing them all at the same time. This
+didn&#x27;t result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo
+peer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule
+out/confirm overhead by non-ChainSync (mainly BlockFetch) related components.
+This results in era-specific behavior (speed is like the prototype in Byron, but
+like the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg" width="654" height="459" class="img_ev3q"></p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-18-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-19-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-14-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#high-level-status-report" class="table-of-contents__link toc-highlight">High-level status report</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#finish-the-utxo-hd-prototype" class="table-of-contents__link toc-highlight">Finish the UTxO HD prototype</a></li><li><a href="#benchmarking-the-csj-prototype" class="table-of-contents__link toc-highlight">Benchmarking the CSJ prototype</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-19T00:00:00.000Z" itemprop="datePublished">October 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-10-19 - 2022-11-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node&#x27;s mempool for the following information:</p><ul><li>Ask the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4554" target="_blank" rel="noopener noreferrer">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4568" target="_blank" rel="noopener noreferrer">Add ToJSON and FromJSON instances for Address</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4565" target="_blank" rel="noopener noreferrer">Export TxIns type alias from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4534" target="_blank" rel="noopener noreferrer">Export more generators from cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-submit-api">cardano-submit-api<a class="hash-link" href="#cardano-submit-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4566" target="_blank" rel="noopener noreferrer">Add tx_submit_fail_count metric</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4549" target="_blank" rel="noopener noreferrer">Upgrade to cabal-3.8.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4613" target="_blank" rel="noopener noreferrer">Update building-the-node-using-nix.md</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li>None</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-19-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-21T00:00:00.000Z" itemprop="datePublished">October 21, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the
+new HeadV1 specification, completing a list the of identified gaps between
+specification and implementation while doing so. In the wake of the recent
+demonstration of SundaeSwap running their DEX in a Hydra Head, they met with
+them to capture feature ideas &amp; incorporate their feedback on the roadmap, as
+well as potential research avenues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href="https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022" target="_blank" rel="noopener noreferrer">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href="https://github.com/input-output-hk/hydra-poc/issues/538" target="_blank" rel="noopener noreferrer">#538</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-21-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-27-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-19-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to
+meeting the <a href="https://github.com/input-output-hk/cardano-base/issues/315" target="_blank" rel="noopener noreferrer">acceptance criteria</a> in cardano-base,
+which lacks some editorial comments on the style of dQuandrant&#x27;s PR, the inclusion of one additional test, and
+we are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,
+but also progressing on the implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp-built-ins">SECP built-ins<a class="hash-link" href="#secp-built-ins" title="Direct link to heading">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/313" target="_blank" rel="noopener noreferrer">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href="https://github.com/cardano-foundation/CIPs/pull/250" target="_blank" rel="noopener noreferrer">PR 250</a> was merged</li><li>The unit-tests <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-27-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-08-12-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-21-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#secp-built-ins" class="table-of-contents__link toc-highlight">SECP built-ins</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team completed several user experience improvements to the
+<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head
+states by publishing release version
+<a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>.
+Besides this, they met with researchers on topic of the HeadV1 specification and
+kicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Have a first plutus script gap closed <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-01-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-28-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which
+fortunately hasn&#x27;t been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with
+the scientists on eclipse evasion.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-network-stack">P2P Network Stack<a class="hash-link" href="#p2p-network-stack" title="Direct link to heading">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer
+sharing.  We found and fixed an important bug recently introduced in one of the
+components of p2p networking stack (fortunately never released).  Together with
+a fix, we designed a unit test diffusion simulation as well as quickcheck
+property test (both could reproduce it). We also changed the code in a way that
+if such a bug is reintroduced in the future, it will be obvious to diagnose.
+For more see:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4067" target="_blank" rel="noopener noreferrer">ouroboros-network#4067</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4086" target="_blank" rel="noopener noreferrer">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where
+unlike what we see on the mainnet.  We found a possible misconfiguration of the
+cluster (caused by 0 TTL on domain names), which could be the direct cause of
+it.  We wrote a PR which rules out such misconfiguration.  We are awaiting on
+the next benchmarking results.  See more at:</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">ouroboros-network#4120</a>
+includes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started
+working toward integration these changes against the release branch of
+<code>cardano-node</code>.  Early next week we ought to be able to have an early version
+of <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">P2P - Single
+Relay</a>
+issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus">Consensus<a class="hash-link" href="#consensus" title="Direct link to heading">​</a></h3><p>We identified and fixed missing error reporting in consensus
+initialisation phase.  See more at
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">ouroboros-network#4015</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for
+node operators.  This includes updating severities of some of the traces as
+well as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">cardano-node#4563</a>.</li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4561" target="_blank" rel="noopener noreferrer">cardano-node#4561</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early
+implementation which will be reviewed and analysed in next weeks.  We started
+working on <code>cardano-node</code> integration.  We need
+<a href="https://github.com/input-output-hk/cardano-node/pull/4392" target="_blank" rel="noopener noreferrer">PR #4392</a> to be merged
+before such integration will be able to land in <code>cardano-node</code>, although this
+is <em>not blocking</em> us currently.  See more at:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">ouroboros-network#4019</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and
+Nick Frisby from the consensus team.  We discussed high lever design of the
+eclipse evasion scheme, which is important for the design and implementation of
+<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.
+A single <a href="https://github.com/input-output-hk/io-sim/pull/32" target="_blank" rel="noopener noreferrer">PR</a> which added
+a few missing instances of the <code>STM</code> monad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to
+accept contributions from 3rd parties).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril-cardano-integration">Mithril Cardano Integration<a class="hash-link" href="#mithril-cardano-integration" title="Direct link to heading">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate
+mithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>
+diffusion layer.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-28-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-28-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; Tracing Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#detailed-description" class="table-of-contents__link toc-highlight">Detailed description</a><ul><li><a href="#p2p-network-stack" class="table-of-contents__link toc-highlight">P2P Network Stack</a></li><li><a href="#consensus" class="table-of-contents__link toc-highlight">Consensus</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">Cardano Node</a></li><li><a href="#peer-sharing" class="table-of-contents__link toc-highlight">Peer Sharing</a></li><li><a href="#eclipse-evasion" class="table-of-contents__link toc-highlight">Eclipse Evasion</a></li><li><a href="#io-sim" class="table-of-contents__link toc-highlight">IO-Sim</a></li><li><a href="#open-source" class="table-of-contents__link toc-highlight">Open Source</a></li><li><a href="#mithril-cardano-integration" class="table-of-contents__link toc-highlight">Mithril Cardano Integration</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; Tracing Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>The new tracing system public release is getting closer, as we&#x27;re resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-28-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-08-12-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#executive-summary" class="table-of-contents__link toc-highlight">Executive summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Open-Source Team</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High Level Summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>We&#x27;ve been working toward publishing <em>Cardano Backlog</em>, currently its in
+review by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">cardano-updates</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for
+cardano project.  In last few weeks we were making steps towards publishing our
+backlog.  It&#x27;s currently under review by the communication team, although most
+of the issues are already visible across various repositories.</p><p>The open-source initiatives have their own
+<a href="https://github.com/orgs/input-output-hk/projects/60" target="_blank" rel="noopener noreferrer">project</a>.  It is set up
+to help us track our major open-source activities.  Right now there are two
+work streams:</p><ul><li>the work on <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href="https://hackage.haskell.org/" target="_blank" rel="noopener noreferrer">Hackage</a> or <a href="https://crates.io" target="_blank" rel="noopener noreferrer">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to
+<em>Cardano</em> which we would like publish to publish, see the following
+<a href="https://github.com/orgs/input-output-hk/projects/60/views/3" target="_blank" rel="noopener noreferrer">link</a>.  Arnauld Bailly recently published
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+library on Hackage.  The networking team is slowly progressing towards
+publishing <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">io-sim</a> and related packages, checkout the progress
+<a href="https://github.com/orgs/input-output-hk/projects/19/views/24" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Thanks to Arnaud Bailly our <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">Cardano Updates</a> website has
+a new look &amp; feel!  It&#x27;s using <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source
+repositories.  He collected many interesting metrics, which allows us to see
+where we need to improve as an open-source project to make the Cardano project
+and many smaller related libraries which we maintain be more open and available
+for open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano
+repositories are missing the most:
+<img loading="lazy" alt="Documentation Adoption" src="/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png" width="1493" height="716" class="img_ev3q">
+You can expect we will improve in these metrics in the coming weeks.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/open-source">open-source</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-open-source.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-04-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-03-embedding-quality"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Embedding Quality Workstream</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High Level Summary</a></li><li><a href="#detailed-description" class="table-of-contents__link toc-highlight">Detailed description</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB Sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,
+unique and foreign keys. It also provides a way to fix older values and migrates without the need to
+resync from genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="schema-simplifications">Schema simplifications<a class="hash-link" href="#schema-simplifications" title="Direct link to heading">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1295" target="_blank" rel="noopener noreferrer">#1295</a>
+The same pr also introduces a different way to rollback, which doesn&#x27;t rely on foreign keys and
+indexes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A
+conservative number of these will be included in the next release and the rest can be found in
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/7" target="_blank" rel="noopener noreferrer">performance view</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="migrations-and-resyncing">Migrations and resyncing<a class="hash-link" href="#migrations-and-resyncing" title="Direct link to heading">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also
+introduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release">Release<a class="hash-link" href="#release" title="Direct link to heading">​</a></h3><p>The release has been mostly cherry-picked from master
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a> and its scope can be seen
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/6" target="_blank" rel="noopener noreferrer">release view</a></p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-01-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-02-system-test"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">System Test Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-28-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#schema-simplifications" class="table-of-contents__link toc-highlight">Schema simplifications</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#migrations-and-resyncing" class="table-of-contents__link toc-highlight">Migrations and resyncing</a></li><li><a href="#release" class="table-of-contents__link toc-highlight">Release</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have made the decision to use the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+in place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure
+to the model. In particular, we now have a lot of support for axiomatic set theory.
+While the next ledger era is still in the design phase, most of the team remains working
+on technical debt.
+In particular, we have moved a lot more code out of the Shelley specific modules and into
+a ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>
+ledger transition (while improving the performance), made conveniences to the development
+environment, cleaned up all the recent changes to the cost model, added a lot of documentation,
+fixed some flaky tests, and deleted some dead code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="axiomatic-set-theory">Axiomatic Set Theory<a class="hash-link" href="#axiomatic-set-theory" title="Direct link to heading">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in
+the formal ledger specifications. See [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>].</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">pull-3039</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3093" target="_blank" rel="noopener noreferrer">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which
+makes our CBOR serialization round-trip tests much more robust, and will also hopefully
+help enforce the mandate for downstream libraries to never re-serialize data that needs
+to be hashed. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3095" target="_blank" rel="noopener noreferrer">pull-3095</a>]
+(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.
+We now have a lot of benchmarks surrounding this code, and have added performance improvements.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>].</li><li>We have restored support for
+<a href="https://hackage.haskell.org/package/ghcid" target="_blank" rel="noopener noreferrer">ghcid</a>
+in our repository. This is a tool for developing with Haskell that many of us find greatly
+improves our productivity by providing us with constant feedback from the type checker.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3112" target="_blank" rel="noopener noreferrer">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3075" target="_blank" rel="noopener noreferrer">pull-3075</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3101" target="_blank" rel="noopener noreferrer">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the
+ledger repository, and cleaned it up
+(most of the heavy lifting was done by our amazing technical writers).
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3091" target="_blank" rel="noopener noreferrer">pull-3091</a>].</li><li>We removed dead code. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3089" target="_blank" rel="noopener noreferrer">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3109" target="_blank" rel="noopener noreferrer">pull-3109</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3110" target="_blank" rel="noopener noreferrer">pull-3110</a>].</li><li>We&#x27;ve removed more of the awkward legacy template Haskell names.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3108" target="_blank" rel="noopener noreferrer">pull-3108</a>].</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-02-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-02-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#axiomatic-set-theory" class="table-of-contents__link toc-highlight">Axiomatic Set Theory</a></li><li><a href="#completed-technical-debt" class="table-of-contents__link toc-highlight">Completed Technical Debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-11-02 - 2022-11-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4567" target="_blank" rel="noopener noreferrer">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4587" target="_blank" rel="noopener noreferrer">Add Ord instance for AddressInEra</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4496" target="_blank" rel="noopener noreferrer">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4635" target="_blank" rel="noopener noreferrer">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4628" target="_blank" rel="noopener noreferrer">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4599" target="_blank" rel="noopener noreferrer">export RawBytesHexError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/2883" target="_blank" rel="noopener noreferrer">Add Plutus minting script doc</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575/files" target="_blank" rel="noopener noreferrer">Improve test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4586" target="_blank" rel="noopener noreferrer">Enable stale bot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4557" target="_blank" rel="noopener noreferrer">Add link to troubleshooting page in the wiki</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4550" target="_blank" rel="noopener noreferrer">Use environment files in Github Actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4544" target="_blank" rel="noopener noreferrer">Add single entrypoint for starting testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575" target="_blank" rel="noopener noreferrer">Improve cardano-testnet test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4595" target="_blank" rel="noopener noreferrer">Reorder module hierarchy</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node Release Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-19---2022-11-02">2022-10-19 - 2022-11-02<a class="hash-link" href="#2022-10-19---2022-11-02" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,
+a temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc1 tag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href="https://github.com/input-output-hk/cardano-node/pull/4540" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li><li><p><a href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre" target="_blank" rel="noopener noreferrer">Cicero CI Migration</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-release.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-02-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-02-system-test"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">System Test Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#node-reelease-update" class="table-of-contents__link toc-highlight">Node Reelease Update</a></li><li><a href="#2022-10-19---2022-11-02" class="table-of-contents__link toc-highlight">2022-10-19 - 2022-11-02</a><ul><li><a href="#executive-summary" class="table-of-contents__link toc-highlight">Executive Summary</a></li><li><a href="#completed" class="table-of-contents__link toc-highlight">Completed</a></li><li><a href="#in-progress" class="table-of-contents__link toc-highlight">In Progress</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">System Test Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href="https://input-output-hk.github.io/cardano-node-tests/" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests" target="_blank" rel="noopener noreferrer">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-system-test.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-02-release"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node Release Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-01-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB Sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Embedding Quality Workstream</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-03T00:00:00.000Z" itemprop="datePublished">November 3, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)
+See <a href="https://input-output-hk.github.io/cardano-node-tests" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>We defined an <a href="https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md" target="_blank" rel="noopener noreferrer">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href="https://github.com/input-output-hk/cardano-node/issues" target="_blank" rel="noopener noreferrer">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/embedding-quality">embedding-quality</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-03-embedding-quality.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-10-31-open-source"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Open-Source Team</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-02-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a>. They also completed implementation of <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a> and alignment of the specification document with auditors.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete and merge ADR18 <a href="https://github.com/input-output-hk/hydra-poc/pull/579" target="_blank" rel="noopener noreferrer">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/595" target="_blank" rel="noopener noreferrer">#595</a></li><li>Have first gap of <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-11-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-04-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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+<title data-rh="true">Mithril Team Update | Cardano Development Updates</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="Mithril Team Update | Cardano Development Updates"><meta data-rh="true" name="description" content="This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we&#x27;ve implemented an efficiency improvement on the size of the mithril certificates."><meta data-rh="true" property="og:description" content="This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we&#x27;ve implemented an efficiency improvement on the size of the mithril certificates."><meta data-rh="true" property="og:type" content="article"><meta data-rh="true" property="article:published_time" content="2022-11-04T00:00:00.000Z"><meta data-rh="true" property="article:author" content="https://github.com/iquerejeta"><meta data-rh="true" property="article:tag" content="mithril"><link data-rh="true" rel="icon" href="/cardano-updates/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril" hreflang="en"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril" hreflang="x-default"><link rel="alternate" type="application/rss+xml" href="/cardano-updates/rss.xml" title="Cardano Updates Feed RSS Feed">
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we&#x27;ve implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href="https://github.com/input-output-hk/mithril/issues/500" target="_blank" rel="noopener noreferrer">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href="https://github.com/input-output-hk/mithril/issues/542" target="_blank" rel="noopener noreferrer">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href="https://github.com/input-output-hk/mithril/issues/543" target="_blank" rel="noopener noreferrer">#543</a></li><li>Publication of an <a href="https://mithril.network/doc/adr/3" target="_blank" rel="noopener noreferrer">ADR3</a></li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2022/10/28/updated-environments" target="_blank" rel="noopener noreferrer">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2244.0" target="_blank" rel="noopener noreferrer">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href="https://github.com/input-output-hk/mithril/issues/526" target="_blank" rel="noopener noreferrer">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href="https://github.com/input-output-hk/mithril/pull/484" target="_blank" rel="noopener noreferrer">#484</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-04-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-10-31-open-source"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Open-Source Team</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href="https://github.com/input-output-hk/cardano-base/pull/336" target="_blank" rel="noopener noreferrer">PR</a> has been merged, and we&#x27;ve adapted the KES secure <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#</a>). Finally, we&#x27;ve &#x27;cleaned&#x27; our libsodium fork, and we directly fork upstream, rather than forking Algorand&#x27;s fork. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href="https://github.com/input-output-hk/kes-agent" target="_blank" rel="noopener noreferrer">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-16-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-11-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper
+on our &quot;Hydra for Payments&quot; project (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href="https://github.com/input-output-hk/hydra-poc/issues/599" target="_blank" rel="noopener noreferrer">#599</a>)</li><li>Minor improvements to logging for better observability (<a href="https://github.com/input-output-hk/hydra-poc/issues/598" target="_blank" rel="noopener noreferrer">#598</a>, <a href="https://github.com/input-output-hk/hydra-poc/issues/600" target="_blank" rel="noopener noreferrer">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href="https://github.com/input-output-hk/hydra-poc/issues/590" target="_blank" rel="noopener noreferrer">#590</a>)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Close more gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-11-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-11-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned
+CBOR serialization. This was an enormous effort, but it will solve a host of problems that we have
+had since the Shelley phase. It will take time to properly review it, and we will
+need to put in a lot of effort to integrate it with the downstream components, but this is  a huge
+milestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction
+serialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will
+not notice any difference, but it is a necessary change needed to prepare the way for
+decentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on
+bringing coherency and consistency to the code base with a common naming convention, and
+improving some error messages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.
+When we encounter a problem with our deserializers, it can be very difficult to implement a fix.
+It is difficult because we can only fix such issues during a hard fork, and leading up to the
+hard fork we must maintain two serializations for the same type in order to not cause unintended
+network splitting (the problematic version must be used before the hard fork,
+and the fixed version is used afterwards).
+This can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to
+search for where all the problematic uses are located.
+The new versioned CBOR serialization allows us to gracefully handle this transition.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.
+See [<a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">pull-372</a>].</li><li>We have draft for the new deposit tracking.
+This draft is not as memory efficient as the final version will be,
+but it is a sufficient proof of concept that we can write property tests against, ensuring
+that we have not changed the semantics.
+We will optimize after we are sure of the correctness.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper
+function, named <code>evaluateTransactionExecutionUnits</code>.
+In particular, it now returns all the information needed to rerun the script with exactly the
+same arguments. This feature will end up appearing in the CLI and other tools from the Plutus
+tools team.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3135" target="_blank" rel="noopener noreferrer">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3126" target="_blank" rel="noopener noreferrer">pull-3126</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3120" target="_blank" rel="noopener noreferrer">pull-3120</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3118" target="_blank" rel="noopener noreferrer">pull-3118</a>], and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3116" target="_blank" rel="noopener noreferrer">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the
+<a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3139" target="_blank" rel="noopener noreferrer">pull-3139</a>].</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-11-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-11-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster
+(which consists of 50 nodes).  There is a performance regression in the header
+notification metric.  The P2P cluster is constructed with the same
+topology as the non-p2p reference one this indicates some regression which
+needs to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P
+release for BP nodes: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with
+<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detail-description">Detail description<a class="hash-link" href="#detail-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance-regression">Performance regression<a class="hash-link" href="#performance-regression" title="Direct link to heading">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png" class="img_ev3q"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of
+the slot to when a header was received. The <code>y</code> axis is the percentile of nodes
+that received a header.  We are currently investigating possible causes of the
+regression. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-p2p-topology-form">New P2P topology form<a class="hash-link" href="#new-p2p-topology-form" title="Direct link to heading">​</a></h3><p>The new topology file format is described in this <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing-improvements">Tracing improvements<a class="hash-link" href="#tracing-improvements" title="Direct link to heading">​</a></h3><ul><li>We improved a handshake error reporting, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4136" target="_blank" rel="noopener noreferrer">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>
+in <code>json</code> format, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">pull #4127</a>.  Such demotions should be investigated by the
+pool operator.  They can indicate a problem in the deployed system, but also
+they could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-improvements">Open Source Improvements<a class="hash-link" href="#open-source-improvements" title="Direct link to heading">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source
+contributors and/or maintenance tasks: <a href="https://github.com/input-output-hk/typed-protocols/pull/22" target="_blank" rel="noopener noreferrer">pull #22</a>, <a href="https://github.com/input-output-hk/io-sim/pull/45" target="_blank" rel="noopener noreferrer">pull #45</a>, <a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pull #48</a>. </p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-11-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-04-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#detail-description" class="table-of-contents__link toc-highlight">Detail description</a><ul><li><a href="#performance-regression" class="table-of-contents__link toc-highlight">Performance regression</a></li><li><a href="#new-p2p-topology-form" class="table-of-contents__link toc-highlight">New P2P topology form</a></li><li><a href="#tracing-improvements" class="table-of-contents__link toc-highlight">Tracing improvements</a></li><li><a href="#open-source-improvements" class="table-of-contents__link toc-highlight">Open Source Improvements</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team started documenting the
+implementation of the UTxO HD feature and continued developing tests for it. As
+part of our work on UTxO HD, we improved the Haskell support for LMDB. We also
+spent time working on the LSM tree prototype, and designed a parameter tuning
+algorithm for it. Regarding our work on Genesis, our investigation of the
+&quot;plateaus&quot; pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This
+led us to developing a caching strategy that will not only remove the
+aforementioned &quot;plateaus&quot;, but can help alleviating the growing block production
+delay on epoch switch. We also helped reviewing the block forge credential
+hotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In
+particular, we improved the <code>io-sim</code> framework, which is crucial for testing and
+simulating Cardano components. We also removed thunks that appeared on era
+translations, and improved our diffusion pipelining feature. We are working on a
+presentation for explaining Praos and Genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the
+anti-diff implementation of sequences of differences. Speedups are now in the
+range of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a &quot;parameter tuning algorithm&quot; for the LSM tree
+prototype. This enables us to run experiments to check the correctness of
+the algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the &quot;plateaus&quot; in the <code>ChainSync</code> jumping prototype
+pointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for
+testing and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ &quot;plateaus&quot; led us to developing a caching strategy for
+<code>TICKF</code> that will not only remove these &quot;plateaus&quot;, but can help alleviating
+the growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended
+for use in the adoption of P2P.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4060" target="_blank" rel="noopener noreferrer">#4060</a>, which adds a report documenting the UTxO HD
+feature, and puts emphasis in explaining how the mempool works in combination
+with UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the
+mempool (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4143" target="_blank" rel="noopener noreferrer">#4143</a>). The problem was that we were testing with mostly small
+values, which artificially boosted the performance gains we saw on benhcmarks.
+Speedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different
+configurations.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>).
+This required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new
+API. We also updated the backing store property tests to use the new version of
+the monadic cursor API.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a
+&quot;parameter tuning algorithm&quot; that adapts the LSM tree design based on factors
+like:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with
+existing experimental results from the LSM tree paper to see if the algorithm is
+working correctly.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>We focused on investigating the &quot;plateaus&quot; in the <code>ChainSync</code> tip, which turned
+out to be due to the <code>TICKF</code> bug which we previously were only aware of in the
+context of the long forging times near epoch boundaries. For the most drastic
+patch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the
+<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png" width="765" height="445" class="img_ev3q"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the
+baseline.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png" width="773" height="445" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>After addressing the PR comments, we merged PR <a href="https://github.com/input-output-hk/io-sim/pull/16" target="_blank" rel="noopener noreferrer">#16</a>, which implements
+the <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>
+library, which is crucial for testing and simulating Cardano components PR #16
+closed <a href="https://github.com/input-output-hk/ouroboros-network/issues/1461" target="_blank" rel="noopener noreferrer">#1461</a>. This new feature was published as version <code>0.4.0.0</code>
+of <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling
+nightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and
+<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of
+thunks that appeared in era translations (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3143" target="_blank" rel="noopener noreferrer">#3143</a>). The fixes will be
+integrated back into consensus when <code>cardano-ledger</code> approves and publish the
+changes introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/2" target="_blank" rel="noopener noreferrer">#2</a>). We currently test the build on
+a Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3857" target="_blank" rel="noopener noreferrer">#3857</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3860" target="_blank" rel="noopener noreferrer">#3860</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3856" target="_blank" rel="noopener noreferrer">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and
+Genesis explanation presentations. The idea is to produce a video that gives an
+overview of these protocols.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4054" target="_blank" rel="noopener noreferrer">#4054</a>), since this was blocking our benchmarking work for
+Genesis. In addition, this issue has the Cardano community <a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">quite
+concerned</a>, so we are hoping the work done in caching the
+computation of the <code>TICKF</code> rule can help alleviating the growing block
+production delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">#3800</a> from the
+networking team, which is intended for use in the adoption of P2P.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-18-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-16-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#high-level-status-report" class="table-of-contents__link toc-highlight">High-level status report</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#finish-the-utxo-hd-prototype" class="table-of-contents__link toc-highlight">Finish the UTxO HD prototype</a></li><li><a href="#lsm-tree-implementation" class="table-of-contents__link toc-highlight">LSM tree implementation</a></li><li><a href="#benchmarking-the-csj-prototype" class="table-of-contents__link toc-highlight">Benchmarking the CSJ prototype</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-11-16 - 2022-11-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4562" target="_blank" rel="noopener noreferrer">Add a native tokens tutorial and exercises</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4674" target="_blank" rel="noopener noreferrer">Update cardano-cli&#x27;s help</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4644" target="_blank" rel="noopener noreferrer">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4639" target="_blank" rel="noopener noreferrer">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4650" target="_blank" rel="noopener noreferrer">Fix windows CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-16-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-16-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#completed" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-16-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-11-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href="https://github.com/input-output-hk/hydra" target="_blank" rel="noopener noreferrer"><code>hydra</code></a>!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href="https://github.com/input-output-hk/hydra/releases/tag/0.8.1" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href="https://github.com/input-output-hk/hydra/pull/615" target="_blank" rel="noopener noreferrer">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-18-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-23-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-18-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released a new Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2246.1" target="_blank" rel="noopener noreferrer">2246.1</a></li><li>Completed the first stage of the store migrations process <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href="https://github.com/input-output-hk/mithril/issues/576" target="_blank" rel="noopener noreferrer">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href="https://github.com/input-output-hk/mithril/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href="https://github.com/input-output-hk/mithril/issues/594" target="_blank" rel="noopener noreferrer">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-18-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-18-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-16-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-23T00:00:00.000Z" itemprop="datePublished">November 23, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We released <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>,
+our proposal for entering the <a href="https://roadmap.cardano.org/en/voltaire/" target="_blank" rel="noopener noreferrer">Voltaire phase</a>.
+<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for
+Cardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.
+The draft pull request was polished, reviewed, and merged this week.
+This solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,
+and the ledger team in particular dedicated one engineer to help with these efforts
+for the next release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-conway-ledger-era">The Conway ledger era<a class="hash-link" href="#the-conway-ledger-era" title="Direct link to heading">​</a></h3><p>The current proposal in <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a> encompasses two new ledger eras.
+The first era will be called Conway, after the English mathematician John Horton Conway.
+The community facing aspects of the Conway ledger era will be very minimal,
+but it will pave the way for introducing liquid democracy.
+The details can be viewed <a href="https://github.com/input-output-hk/cardano-ledger/projects/4" target="_blank" rel="noopener noreferrer">here</a>.
+We do not yet have a formal specification for the Conway era.
+Our plan is to debut the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>.
+Briefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href="https://github.com/cardano-foundation/CIPs/pull/318" target="_blank" rel="noopener noreferrer">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="versioned-cbor">Versioned CBOR<a class="hash-link" href="#versioned-cbor" title="Direct link to heading">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano
+major protocol version.
+We still aim to preserve backwards compatibility as much as possible, but we now have a principled
+plan for resolving problems (see <a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">CIP-ledger-cbor</a>).
+In particular, we can now address several long standing issues, such as
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>, <a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits
+is much closer now to being ready to take out of draft (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>).
+For background on the issue, see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>.
+This is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>As always, we keep working on technical debt.
+We have deduplicated a some things: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3129" target="_blank" rel="noopener noreferrer">pull-3129</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a>.
+We have memoized a problematic computation (though more due diligence is needed before we can
+merge): <a href="https://github.com/input-output-hk/cardano-ledger/pull/3141" target="_blank" rel="noopener noreferrer">pull-3141</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node-release">Node release<a class="hash-link" href="#node-release" title="Direct link to heading">​</a></h3><p>We have been helping with the node release efforts. See <a href="https://github.com/input-output-hk/cardano-node/pull/4608" target="_blank" rel="noopener noreferrer">pull-4608</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-23-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-25-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-18-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#the-conway-ledger-era" class="table-of-contents__link toc-highlight">The Conway ledger era</a></li><li><a href="#versioned-cbor" class="table-of-contents__link toc-highlight">Versioned CBOR</a></li><li><a href="#deposit-tracking" class="table-of-contents__link toc-highlight">Deposit tracking</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#node-release" class="table-of-contents__link toc-highlight">Node release</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don&#x27;t need to be aware of the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/31" target="_blank" rel="noopener noreferrer">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library&#x27;s README <a href="https://github.com/input-output-hk/mithril/pull/616" target="_blank" rel="noopener noreferrer">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>We&#x27;ve been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-25-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-28-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-25-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li></ul></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-25-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-25-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-23-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-28T00:00:00.000Z" itemprop="datePublished">November 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG&#x27;s benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We&#x27;ve seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don&#x27;t expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;kind&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;PeerStatusChangeFailure&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;peerStatusChangeType&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;reason&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;TimeoutError&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don&#x27;t try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There&#x27;s a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-28-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-30-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-25-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#stake-driven-data-diffusion-release-for-relays" class="table-of-contents__link toc-highlight">Stake-Driven Data Diffusion Release for Relays</a><ul><li><a href="#peer-sharing" class="table-of-contents__link toc-highlight">Peer Sharing</a></li><li><a href="#deltaq" class="table-of-contents__link toc-highlight">DeltaQ</a></li></ul></li><li><a href="#what-have-we-achieve-last-sprint" class="table-of-contents__link toc-highlight">What have we achieve last sprint</a><ul><li><a href="#deltaq-1" class="table-of-contents__link toc-highlight">DeltaQ</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic
+cursor API that was needed to implement LMDB range reads, which is in turn
+required for the implementation of the UTxO HD feature. We added tables to
+several tests in for the UTxO HD feature, which increases our confidence in the
+correctness of the prototype. The mempool property tests are close to being
+completed. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with
+CSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a
+high-level overview of consensus to the top level documentation of
+<code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>)) which was
+needed to solve a bug with LMDB range-reads. After this PR was merged, we focused on
+bridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating
+using <code>lmdb-simple</code>&#x27;s cursor API without <code>Serialise</code> constraints (<a href="https://github.com/input-output-hk/lmdb-simple/pull/3" target="_blank" rel="noopener noreferrer">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4184" target="_blank" rel="noopener noreferrer">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses
+tables. This will enable us to exercise the UTxO HD mempool integration by
+leveraging the existing mempool property-tests. The new state-machine
+property-tests are still needed for testing the parallel behaviour of the
+mempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements
+in the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the
+state machine did not have access to mutable references. However, the mempool
+tests require the use of such mutable references for mocking the ledger
+interface. As a result, our parallel tests were failing with rather obscure
+messages. @Jasagredo submitted a pull request (<a href="https://github.com/stevana/quickcheck-state-machine/pull/12" target="_blank" rel="noopener noreferrer">#12</a>) that allows for
+new mutable references to be created at each run of the state machine.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code
+and gathering results (i.e., plots and their interpretation).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="csj-prototype">CSJ prototype<a class="hash-link" href="#csj-prototype" title="Direct link to heading">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact
+KES and batched VRF (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4151" target="_blank" rel="noopener noreferrer">#4151</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We
+are now working on the &quot;Implementation&quot; section (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4020" target="_blank" rel="noopener noreferrer">#4020</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4146" target="_blank" rel="noopener noreferrer">#4146</a> and <a href="https://github.com/input-output-hk/ouroboros-network/pull/4174" target="_blank" rel="noopener noreferrer">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">#4197</a>). This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-30-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-01-system-test"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">System Test Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-30-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD prototype</a></li><li><a href="#lsm-tree-implementation" class="table-of-contents__link toc-highlight">LSM tree implementation</a></li><li><a href="#csj-prototype" class="table-of-contents__link toc-highlight">CSJ prototype</a></li><li><a href="#new-vrf-and-kes-crypto-integration" class="table-of-contents__link toc-highlight">New VRF and KES crypto integration</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-11-30 - 2022-12-13</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Append tx output in cli transaction build command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4592" target="_blank" rel="noopener noreferrer">Update Error messages in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Replace Data.Map with Data.Map.Strict</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4708" target="_blank" rel="noopener noreferrer">Update Github actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don&#x27;t see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.
+The idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.
+We are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-30-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-11-30-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-28-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,
+it makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces
+migrations. This release finalises the objectives that were set for db-sync for the previous
+3 months period and part of the syncing speed objective set for the next period
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100" target="_blank" rel="noopener noreferrer">Changelog</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li><p>Branch <a href="https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b" target="_blank" rel="noopener noreferrer">release/13.1.0.x</a>
+includes all the improvements related to the release. The release is passing through the testing
+phase and a number of bugs and issues have been fixed, like
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a>
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a>.
+Also many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new
+release and development process, so that it takes into account migrations
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1305" target="_blank" rel="noopener noreferrer">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for
+docker.</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-02-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-01-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href="https://github.com/input-output-hk/mithril/issues/585" target="_blank" rel="noopener noreferrer">#585</a></li><li>Completed the second stage of the store automatic migration process <a href="https://github.com/input-output-hk/mithril/issues/600" target="_blank" rel="noopener noreferrer">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href="https://github.com/input-output-hk/mithril/issues/599" target="_blank" rel="noopener noreferrer">#599</a></li><li>Completed CI/CD handling of PR from forks <a href="https://github.com/input-output-hk/mithril/issues/597" target="_blank" rel="noopener noreferrer">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/586" target="_blank" rel="noopener noreferrer">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Worked on multi-platforms end to end test <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-01-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-01-system-test"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">System Test Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">System Test Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single
+Relay</em> functionality, and also tested some DB-Sync tags.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href="https://github.com/mkoura/report-aggregator" target="_blank" rel="noopener noreferrer">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-system-test.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-01-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-11-30-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#framework-improvements" class="table-of-contents__link toc-highlight">Framework improvements:</a></li><li><a href="#db-sync" class="table-of-contents__link toc-highlight">DB-Sync:</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-02T00:00:00.000Z" itemprop="datePublished">December 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress
+after last week&#x27;s summit. They have extended their model-based testing (MBT)
+approach with transaction creation &amp; observation
+<a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a>, solved
+<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet
+initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a>.
+Also, the Hydra researchers updated the security proofs of the Coordinated Hydra
+Head, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href="https://github.com/input-output-hk/hydra/pull/644" target="_blank" rel="noopener noreferrer">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-02-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-09-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-01-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We merged the API redesig <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We&#x27;ll probably circle back to this in the future <a href="https://github.com/input-output-hk/musig2/pull/36" target="_blank" rel="noopener noreferrer">PR#36</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We merged the individual signature <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href="https://github.com/input-output-hk/kes/commits/master" target="_blank" rel="noopener noreferrer">kes repo</a>) </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href="https://gitlab.haskell.org/ghc/ghc/-/issues/22564" target="_blank" rel="noopener noreferrer">bug in GHC</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Fixed a &#x27;use-after-free&#x27; bug in the KES agent.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-12-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-09-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li></ul></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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They also worked on implementing <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> related to bounded tx validity which is now under review. <a href="https://github.com/obsidiansystems/hydra-pay" target="_blank" rel="noopener noreferrer">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href="https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue" target="_blank" rel="noopener noreferrer">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Document model based testing <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a> &amp; <a href="https://github.com/input-output-hk/hydra/issues/641" target="_blank" rel="noopener noreferrer">#641</a></li><li>Got <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href="https://github.com/input-output-hk/hydra/issues/634" target="_blank" rel="noopener noreferrer">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock &quot;the RFP prepared for the external audit&quot; <a href="https://github.com/input-output-hk/hydra/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href="https://github.com/input-output-hk/hydra/issues/630" target="_blank" rel="noopener noreferrer">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href="https://github.com/input-output-hk/hydra/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-09-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-09-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly
+<code>cardano-ledger-api</code> package!
+A <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>
+will be filled out in the days ahead,
+people interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using
+<a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">architectural decision records</a>
+to leave a record of important decisions that the team makes.
+We will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.
+We are prioritizing correctness with our first pull request, and will follow up with
+performance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a>
+for more context.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ledger-api">Cardano ledger API<a class="hash-link" href="#cardano-ledger-api" title="Direct link to heading">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it
+out and adding much needed documentation.
+They have also added doctests!
+In the days to come, the Plutus tools team will map out a lot more work for the API and record
+it in this
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3182" target="_blank" rel="noopener noreferrer">pull-3182</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3188" target="_blank" rel="noopener noreferrer">pull-3188</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="architectural-decision-records-adrs">Architectural Decision Records (ADRs)<a class="hash-link" href="#architectural-decision-records-adrs" title="Direct link to heading">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made
+in the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3177" target="_blank" rel="noopener noreferrer">pull-3177</a> (rendered <a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">here</a>)</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tracking-individual-deposits">Tracking individual deposits<a class="hash-link" href="#tracking-individual-deposits" title="Direct link to heading">​</a></h4><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3190/files" target="_blank" rel="noopener noreferrer">ADR-3</a>
+for background.
+We now have the logic in place to track individual deposits, and a host of property tests
+to make sure that the logic is correct.
+The current implementation uses more memory than it needs to, and we will address that next,
+with our hope being to only use one word (8 bytes) per registered stake credential.
+There is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="removing-pointer-addresses">Removing pointer addresses<a class="hash-link" href="#removing-pointer-addresses" title="Direct link to heading">​</a></h4><p>Pointer addresses, which have never seen any real use
+(there are something like eleven on mainnet), are being deprecated starting at Cardano major
+version 9.
+<a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a> gives the context.
+We are disabling them by first preventing transaction outputs containing them
+from being serialized by the node at the moment we switch to version 9.
+At the hard fork after that, we will translate the existing few pointer addresses
+to enterprise addresses.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3174" target="_blank" rel="noopener noreferrer">pull-3174</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never
+be exercised. After we have passed the given hardfork, we are able to clean up the code
+and simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3165" target="_blank" rel="noopener noreferrer">pull-3165</a> - We improved the type safety of our code while also discovering and fixing
+a serialization bug.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed dead code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to
+dislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We organized our property testing code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3200" target="_blank" rel="noopener noreferrer">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the
+ledger state to the Plutus script context.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-09-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-02-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-12T00:00:00.000Z" itemprop="datePublished">December 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-12-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-14-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-09-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the
+backing store and Mempool on the UTxO-HD branch with important discoveries
+regarding parallel QSM testing. We also worked with the Ledger team to envisage
+the modifications that are required in Ledger and Consensus to accommodate the
+changes in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking
+the ledger operations, which will allow us to identify, debug, and profile
+potential performance problems. We drafted a document that defines how to manage
+the versions of Consensus-related packages. The top level documentation of
+<code>ouroboros-network</code> now features a description of the consensus components and
+provides a hyperlinked map to the modules documentation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the
+parallel case proved to be more challenging than we thought. The operation of
+adding a list of transactions to the mempool is not atomic and, as a result,
+when adding a list of transactions, transactions from other processes can be
+added in between. The mempool implementation handles this correctly, however
+this required us to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">redesign</a> the parallel model we had to take
+the lack of atomicity into account.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We finished refactoring the backing store property tests. The second review
+round is ongoing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)
+fetching/looking up data from disk.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis
+design related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely
+delineates a fundamental component. We almost have a full Haskell prototype of
+it. It will be very nicely self-contained, perhaps even usable in the ultimate
+implementation!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto
+types to avoid huge allocation on the epoch boundary when changing aspects of
+the crypto that will only manifest in headers, not in the ledger states.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pull-request</a> that adds a support to <code>db-analyser</code> for
+benchmarking ledger operations. This will allow us to identify, debug, and
+profile potential performance problems. The benchmark focus on the main 5 ledger
+operations that are involved in chain syncing, block forging, and block
+validation, namely:</p><ol start="0"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65
+million blocks (approximately) of the Cardano chain. The thin yellow lines under
+the x-axis show the epoch boundaries, whereas the thick yellow lines correspond
+to the era transitions.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png" width="1600" height="800" class="img_ev3q"></p><p>As we can see in this figure, era and epoch boundaries require more computation
+time. The ledger team are aware of this problem, and we are working to improve
+this situation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4207" target="_blank" rel="noopener noreferrer">drafted a document</a> motivating and defining how Consensus (and
+possibly other core teams) will/should manage our package versions. This
+pull-request garnered many great discussions from our team members and other
+teams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et
+al. We want to thank you all for your input, and we found this discussion very
+enlightening!</p><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">pull request</a> that adds an overview of consensus to
+the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-15-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-14-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD prototype</a></li><li><a href="#lsm-tree-implementation" class="table-of-contents__link toc-highlight">LSM tree implementation</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#new-vrf-and-kes-crypto-integration" class="table-of-contents__link toc-highlight">New VRF and KES crypto integration</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have
+been found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses
+reverse indexes, same as the release
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1320" target="_blank" rel="noopener noreferrer">#1320</a>
+This also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1324" target="_blank" rel="noopener noreferrer">#1324</a></li><li>AdaPots fix <a href="https://github.com/input-output-hk/cardano-db-sync/pull/1323" target="_blank" rel="noopener noreferrer">#1323</a>. This
+fixes an issue where the per epoch AdaPots didn&#x27;t match the epoch boundary, but
+they also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">#3212</a>. This pr
+adjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the
+number of queries that db-sync does during syncing an make syncing faster.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-14-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-14-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-12-14 - 2022-12-27</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4703" target="_blank" rel="noopener noreferrer">Move style guide to wiki</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4734" target="_blank" rel="noopener noreferrer">Cache secp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4717" target="_blank" rel="noopener noreferrer">Use cabal-cache</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4699" target="_blank" rel="noopener noreferrer">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4724" target="_blank" rel="noopener noreferrer">Update cabal.project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4125" target="_blank" rel="noopener noreferrer">Add aarch64-darwin to nix-shell</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4626" target="_blank" rel="noopener noreferrer">Improved error message for failed asset name decode</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4700" target="_blank" rel="noopener noreferrer">Remove cardano-cli address build-script</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4698" target="_blank" rel="noopener noreferrer">Move signing key reading to cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4712" target="_blank" rel="noopener noreferrer">Only run chairman test on latest era</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4679" target="_blank" rel="noopener noreferrer">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we&#x27;ve planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we&#x27;re continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we&#x27;ll be running the model cluster workload.</p><p>We&#x27;ve also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we&#x27;ve done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that&#x27;s also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it&#x27;s the fair benchmark, because that&#x27;s the way we expect SPO&#x27;s to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we&#x27;ve established the performance of the new system to be adequate for the release, we won&#x27;t be delaying it much further.</p><p>In addition, we&#x27;re still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we&#x27;ve also improved provenance of the raw data, by collecting more identification information and statistics about it.
+This means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.
+This will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.
+Previously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)
+Naturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-14-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-12-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-15T00:00:00.000Z" itemprop="datePublished">December 15, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2248.1" target="_blank" rel="noopener noreferrer"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href="https://crates.io/crates/mithril-stm" target="_blank" rel="noopener noreferrer"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node&#x27;s multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href="https://github.com/input-output-hk/mithril/issues/619" target="_blank" rel="noopener noreferrer">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/638" target="_blank" rel="noopener noreferrer">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Fixed the protocol parameters transition <a href="https://github.com/input-output-hk/mithril/issues/627" target="_blank" rel="noopener noreferrer">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href="https://github.com/input-output-hk/mithril/issues/510" target="_blank" rel="noopener noreferrer">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href="https://github.com/input-output-hk/mithril/issues/633" target="_blank" rel="noopener noreferrer">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href="https://github.com/input-output-hk/mithril/issues/621" target="_blank" rel="noopener noreferrer">#621</a></li><li>Worked on the re-genesis of the test networks <a href="https://github.com/input-output-hk/mithril/issues/651" target="_blank" rel="noopener noreferrer">#651</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-15-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-16-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-14-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-16T00:00:00.000Z" itemprop="datePublished">December 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/" target="_blank" rel="noopener noreferrer">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a>.</li><li>Recorded decision to use model-based testing (<a href="https://hydra.family/head-protocol/adr/22/" target="_blank" rel="noopener noreferrer">ADR22</a>) and improved Model <a href="https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html" target="_blank" rel="noopener noreferrer">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href="https://github.com/input-output-hk/hydra/issues/656" target="_blank" rel="noopener noreferrer">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href="https://github.com/input-output-hk/hydra/pull/646" target="_blank" rel="noopener noreferrer">#646</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Push <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-16-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2022-12-28-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-15-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-12-28T00:00:00.000Z" itemprop="datePublished">December 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2022-12-28 - 2023-01-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4762" target="_blank" rel="noopener noreferrer">Fix hedgehog-extras sha hash</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4759" target="_blank" rel="noopener noreferrer">Update hegehog-extras bounds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4751" target="_blank" rel="noopener noreferrer">GitHub token fix</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4743" target="_blank" rel="noopener noreferrer">Use setup-haskell action</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4738" target="_blank" rel="noopener noreferrer">Use Github Action to install libsecp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4714" target="_blank" rel="noopener noreferrer">Update index state and hedgehog-extras.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4710" target="_blank" rel="noopener noreferrer">Cleaned cabal files</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4737" target="_blank" rel="noopener noreferrer">Add cache versioning</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4742" target="_blank" rel="noopener noreferrer">Delete obsolete scripts</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4746" target="_blank" rel="noopener noreferrer">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4749" target="_blank" rel="noopener noreferrer">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4754" target="_blank" rel="noopener noreferrer">Optimise query stake-snapshot command</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-28-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-05T00:00:00.000Z" itemprop="datePublished">January 5, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,
+built out the new Conway era transaction body (in line with CIP-1694),
+greatly reduce some problematically large calculations on the epoch boundary,
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finishing-the-deposit-tracking">Finishing the deposit tracking<a class="hash-link" href="#finishing-the-deposit-tracking" title="Direct link to heading">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.
+As this is a large data structure
+(since its size is linear with respect to the number of registered stake credentials),
+it is very important that we also reduce the memory overhead as much as possible.
+Fortunately, we were able to add very little overhead for the deposits by using existing
+efficient data structures. The extra tracking now only incurs one word (8 bytes)
+per registered stake credential.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era-transaction">New Conway era transaction<a class="hash-link" href="#new-conway-era-transaction" title="Direct link to heading">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.
+Note that the Conway era implements, losing speaking, the parts of CIP-1694 that are not
+related to the liquid democracy (the &quot;DReps&quot;).
+The new transaction body adds the new governance actions and votes,
+while also deprecating the old governance structures
+(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.
+The wire specification is still subject to change while we work on the Conway era,
+but it is now usable and has proper testing support
+(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="optimizing-the-tickf-transition">Optimizing the <code>TICKF</code> transition<a class="hash-link" href="#optimizing-the-tickf-transition" title="Direct link to heading">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load
+placed on the node by the ledger at the epoch boundary.
+While still not perfect, we believe that we have removed one of the final problematically long
+epoch boundary computations that exacerbate situations like
+<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">this</a>.
+In particular, the problem involved the way in which the consensus layer obtains a view of the
+ledger for the purposes of checking the leadership schedule in a new epoch.
+We implemented a stopgap measure which now only incurs a single multi-second cost once per epoch
+instead of potentially several multi-second costs while the networks waits for the first block
+of a new epoch to be minted.</p><p>See:</p><ul><li>An <a href="https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md" target="_blank" rel="noopener noreferrer">ADR</a> about the decision.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-ledger-event">Improved ledger event<a class="hash-link" href="#improved-ledger-event" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.
+For this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now
+includes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-type-saftey">Improved type saftey<a class="hash-link" href="#improved-type-saftey" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR
+encoders and decoders were using the wrong level of precision, having to due with with
+the Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types
+for <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="codemodule-organization">Code/Module organization<a class="hash-link" href="#codemodule-organization" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,
+due to the uncertainly of release dates while we were implementing them.
+In particular, they were coupled in way that is different from the rest of the code base.
+With hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two
+separate ledger era packages, which is now consistent with the rest of the repository
+and module structure.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test
+generator code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,
+the ledger does not need to deal with signing keys, and since this is a topic that
+deserves the utmost care, it is best to make it clear that our use of signing keys
+is only for testing.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest
+of the codebase.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="revert-pointer-address-deprecation">Revert pointer address deprecation<a class="hash-link" href="#revert-pointer-address-deprecation" title="Direct link to heading">​</a></h4><p>Thanks to one of our excellent internal auditors,
+<a href="https://github.com/jmhrpr" target="_blank" rel="noopener noreferrer">@jmhrpr</a>,
+we now have a better plan for deprecating pointer addresses.
+This meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3161" target="_blank" rel="noopener noreferrer">issue-3161</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3215" target="_blank" rel="noopener noreferrer">pull-3215</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="miscellaneous">Miscellaneous<a class="hash-link" href="#miscellaneous" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,
+reducing many constraints.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a> - We switch from <a href="https://hackage.haskell.org/package/ormolu" target="_blank" rel="noopener noreferrer">ormolu</a> to
+<a href="https://hackage.haskell.org/package/fourmolu" target="_blank" rel="noopener noreferrer">fourmolu</a>.
+The reason was to be able to finally have more diff friendly code!</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-05-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-06-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2022-12-28-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#finishing-the-deposit-tracking" class="table-of-contents__link toc-highlight">Finishing the deposit tracking</a></li><li><a href="#new-conway-era-transaction" class="table-of-contents__link toc-highlight">New Conway era transaction</a></li><li><a href="#optimizing-the-tickf-transition" class="table-of-contents__link toc-highlight">Optimizing the <code>TICKF</code> transition</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href="https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d" target="_blank" rel="noopener noreferrer">Version 0.1.1</a>, which was published in <a href="https://crates.io/crates/kes-summed-ed25519" target="_blank" rel="noopener noreferrer">crates.io</a>. </li><li>Updated new KES format to mithril library <a href="https://github.com/input-output-hk/mithril/pull/674" target="_blank" rel="noopener noreferrer">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href="https://github.com/input-output-hk/mithril/pull/531" target="_blank" rel="noopener noreferrer">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href="https://github.com/input-output-hk/iohk-nix/pull/520" target="_blank" rel="noopener noreferrer">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href="https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518" target="_blank" rel="noopener noreferrer">PR#255</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cryptography-handbook">Cryptography handbook<a class="hash-link" href="#cryptography-handbook" title="Direct link to heading">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href="https://input-output-hk.github.io/cryptography_spec/" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-06-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-11-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-05-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#cryptography-handbook" class="table-of-contents__link toc-highlight">Cryptography handbook</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During
+these weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and
+discussing with the Ledger team the changes that might be required for the next
+iterations. The pull request that adds the Conway era is waiting for a second
+review round and we hope to merge it soon. On the technical debt side we are
+looking into a property-test failure found in the iterators. We are
+investigating if this is an error in the model or in the implementation. We also
+improved the documentation of our testing code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.
+The Ledger team is concerned that for the remaining maps we might need the full
+ledger state on epoch boundaries. Since the main consumer of the ledger rules is
+Consensus, the code that requires access to a full state could be moved from the
+ledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take
+place in such bridge, instead of querying the ledger for the values that are
+required in the epoch-transition computations.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4234" target="_blank" rel="noopener noreferrer">relocated</a> some UTxO-HD definitions, in preparation for merging
+the prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory
+consumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely
+reaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The
+in-memory backend is about 30 minutes faster, but still slower than the baseline
+version. We are aware of this phenomenon and it is inherent to the problem of
+maintaining sequences of differences of the last <code>k</code> ledger states that allows
+us to perform rollback and roll-forward. We are in the process of measuring
+syncing from scratch times.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png" width="2500" height="1700" class="img_ev3q"></p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/pull/4263" target="_blank" rel="noopener noreferrer">added <code>StaticEither</code> accessors</a> that helped us to simplify
+the UTxO-HD prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era">New Conway era<a class="hash-link" href="#new-conway-era" title="Direct link to heading">​</a></h3><p>We incorporated the feedback of the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">pull request</a>, and rebased this
+branch on top of <code>master</code>. The PR is pending a second review round and we hope
+to merge this soon.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We are investigating a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">property-testing failure</a> involving
+iterators. Solving this requires understanding the expected behavior of
+iterators in the counterexample found by <code>QuickCheck</code> to determine if the error
+is in the model or in the implementation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4248" target="_blank" rel="noopener noreferrer">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the
+explanations about the tests are easier to find in the relevant modules, and the
+documentation is easier to keep up to date.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-11-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-12-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-11-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD Prototype</a></li><li><a href="#new-conway-era" class="table-of-contents__link toc-highlight">New Conway era</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we&#x27;re now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we&#x27;ve made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we&#x27;ve started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>The improved tracing internals were implemented, and we&#x27;re now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.
+We now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.
+Once this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-11-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-11-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-06-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-12T00:00:00.000Z" itemprop="datePublished">January 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href="https://mithril.network/doc/adr/4" target="_blank" rel="noopener noreferrer">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href="https://github.com/input-output-hk/mithril/issues/671" target="_blank" rel="noopener noreferrer">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease" target="_blank" rel="noopener noreferrer">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href="https://github.com/input-output-hk/mithril/issues/681" target="_blank" rel="noopener noreferrer">#681</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-12-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-13-system-test"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">System Test Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-11-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the
+technical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique
+<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to
+explicitly synchronize from genesis (if configured), and fixed smaller log and
+build issues reported by new users.</p><p>Besides this, a retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+was published by Matthias Benkort (CF) on Hydra, summarizing our progress made
+in 2022 also an outlook where Hydra is headed for in 2023. Also, the team had
+some first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href="https://hydra.family/head-protocol/monthly/2022-12" target="_blank" rel="noopener noreferrer">hydra
+website</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also
+an outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href="https://github.com/ch1bo/hydra-spec" target="_blank" rel="noopener noreferrer">latest
+version in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href="https://hydra.family/head-protocol/adr/21/" target="_blank" rel="noopener noreferrer">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-14-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-13-release"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node Release Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node Release Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11-02---2023-01-13">2022-11-02 - 2023-01-13<a class="hash-link" href="#2022-11-02---2023-01-13" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on
+<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.
+This work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.5</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-release.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-13-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-13-system-test"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">System Test Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#node-reelease-update" class="table-of-contents__link toc-highlight">Node Reelease Update</a></li><li><a href="#2022-11-02---2023-01-13" class="table-of-contents__link toc-highlight">2022-11-02 - 2023-01-13</a><ul><li><a href="#executive-summary" class="table-of-contents__link toc-highlight">Executive Summary</a></li><li><a href="#completed" class="table-of-contents__link toc-highlight">Completed</a></li><li><a href="#in-progress" class="table-of-contents__link toc-highlight">In Progress</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">System Test Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single
+Relay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href="https://input-output-hk.github.io/cardano-node-tests/readme.html" target="_blank" rel="noopener noreferrer">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html" target="_blank" rel="noopener noreferrer">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===
+  to
+  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">details here</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-system-test.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-13-release"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node Release Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-12-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#framework-improvements" class="table-of-contents__link toc-highlight">Framework improvements:</a></li><li><a href="#node" class="table-of-contents__link toc-highlight">Node:</a></li><li><a href="#db-sync" class="table-of-contents__link toc-highlight">DB-Sync:</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-14T00:00:00.000Z" itemprop="datePublished">January 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused
+the last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the
+new leger core and ghc-9.2.4</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate CHaP
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1331" target="_blank" rel="noopener noreferrer">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1332" target="_blank" rel="noopener noreferrer">#1332</a></li><li>Technical debt: Add code formatter fourmolu
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1334" target="_blank" rel="noopener noreferrer">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-14-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-19-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-13-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-19T00:00:00.000Z" itemprop="datePublished">January 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694
+(restructuring the ledger state),
+fixed the PDF hosting problem (mostly the formal specs),
+built out more of the new user-friendly ledger API,
+finished a proof of concept for constraint-based generators for property tests
+(with the hopes of being able to replace our trace generators one day),
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="restructuring-the-ledger-state">Restructuring the ledger state<a class="hash-link" href="#restructuring-the-ledger-state" title="Direct link to heading">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,
+as described in CIP-1694.
+In particular, the ledger rules will be restructured as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">   BBODY</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |-------------------------------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v                               v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   TICK                            LEDGERS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |                               |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |---------|                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v         v                     v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |----------|          |--------|-------------------|-----------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v          v                   v                   v           v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                              |                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |---------|------------|       v                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v         v            v      DELPL                v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             |--------|          |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             v        v          v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">-..- Removed</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">+..+ Added</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">~..~ Modified</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.
+In the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.
+We have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pdf-hosting">PDF hosting<a class="hash-link" href="#pdf-hosting" title="Direct link to heading">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag
+with a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.
+The action creates a GitHub release containing the PDFs.
+The links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="powering-the-new-ledger-api">Powering the new ledger API<a class="hash-link" href="#powering-the-new-ledger-api" title="Direct link to heading">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,
+and replaced them with lenses.
+This is probably the last major restructuring that the ledger team will do on the code base
+for the API for a while
+(the Plutus tools team will be working on it next, see <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">here</a>).
+We also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative
+of not just an initial state, generate a single random valid block, and then test our properties.
+The hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a> massive CI speedup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a> better types for fees in the protocol parameters</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-19-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-20-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-14-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#restructuring-the-ledger-state" class="table-of-contents__link toc-highlight">Restructuring the ledger state</a></li><li><a href="#pdf-hosting" class="table-of-contents__link toc-highlight">PDF hosting</a></li><li><a href="#powering-the-new-ledger-api" class="table-of-contents__link toc-highlight">Powering the new ledger API</a></li><li><a href="#constraint-based-generators" class="table-of-contents__link toc-highlight">Constraint-based generators</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href="https://github.com/input-output-hk/mithril/pull/675" target="_blank" rel="noopener noreferrer">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>Plutus team ran <a href="https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs" target="_blank" rel="noopener noreferrer">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we&#x27;ll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There&#x27;s been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href="https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">doing the change</a>, but still the CI is not happy.</li><li>The <a href="https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">same</a> was needed for the KES agents prerequisites <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">PR#317</a>.</li><li>We&#x27;ve started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-25-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-20-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1
+specification. Of which a first version has been aggregated and is currently
+under review. They aligned the on-chain scripts of reimbursing funds on abort
+like defined in the specification, improved the mutation test framework to have
+more control when testing plutus scripts. The added HeadId in the API and the
+TUI example client make <code>hydra-node</code> easier to use and a first experiment of a
+Hydra Head explorer was showing the utility of this - see what Heads exist on
+the <code>preview</code> network <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>HeadId to API and display in the TUI <a href="https://github.com/input-output-hk/hydra/pull/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href="https://github.com/input-output-hk/hydra/pull/679" target="_blank" rel="noopener noreferrer">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href="https://github.com/input-output-hk/hydra/pull/670" target="_blank" rel="noopener noreferrer">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href="https://www.overleaf.com/read/bbqzmptcxryj" target="_blank" rel="noopener noreferrer">Read it on overleaf</a> (<a href="https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md" target="_blank" rel="noopener noreferrer">Communication channels</a> for feedback)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-20-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-20-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-20-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-20-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing
+support for cardano-world.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tullia">Tullia<a class="hash-link" href="#tullia" title="Direct link to heading">​</a></h3><ul><li>Made it easier to support cloning from a PR&#x27;s fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href="https://github.com/hashicorp/nomad/issues/12877" target="_blank" rel="noopener noreferrer">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href="https://colmena.cli.rs" target="_blank" rel="noopener noreferrer">Colmena</a> for deploys instead of <a href="https://github.com/serokell/deploy-rs" target="_blank" rel="noopener noreferrer">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href="https://github.com/yaxitech/ragenix" target="_blank" rel="noopener noreferrer">ragenix</a> instead of <a href="https://github.com/Mic92/sops-nix" target="_blank" rel="noopener noreferrer">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-world">bitte-world<a class="hash-link" href="#bitte-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-20-network"><div class="pagination-nav__sublabel">Newer Post</div><div 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities
+around the UTxO-HD prototype. This is a very important milestone which will
+enable us to run system-level tests and benchmarks, as well as start refactoring
+and cleaning the prototype. Regarding our Genesis workstream, we elaborated a
+roadmap that gives an indication of the remaining work. We also continued our
+work on benchmarking chain-sync-jumping. We also continued working on improving
+the way we handle blocks from the future, and advancing the integration of the
+new VRF and KES crypto.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough
+confidence that we will be able to move additional parts of the ledger state
+onto disk. We worked together with the Ledger team to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4296" target="_blank" rel="noopener noreferrer">elaborate a
+sketch</a> on how the UTxO-HD design would accommodate the migration of
+additional data from memory to disk. This gave us enough confidence that the
+current architecture will be extensible in the future.</p><p>On the testing front, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4274" target="_blank" rel="noopener noreferrer">added</a> property-based tests for the UTxO-HD
+type classes. </p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/issues/4289" target="_blank" rel="noopener noreferrer">enabled disabled components</a>, and addressed several
+technical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4269" target="_blank" rel="noopener noreferrer">#4269</a>), and integrate it
+into consensus (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4273" target="_blank" rel="noopener noreferrer">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/7" target="_blank" rel="noopener noreferrer">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We
+found a race condition in the LMDB backing store, which <a href="https://github.com/input-output-hk/ouroboros-network/pull/4283" target="_blank" rel="noopener noreferrer">we fixed</a>.
+After the fix we were able to successfully run these benchmarks. The results
+were published by <a href="https://github.com/input-output-hk/ouroboros-network/pull/4295" target="_blank" rel="noopener noreferrer">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and
+flushing values to disk. The following plot shows the duration of these disk
+operation in relation to the main ledger operations, where we can see that the
+cost of the former are comparatively low. The spike at the beginning of the
+graph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed
+to disk.</p><p><img loading="lazy" alt="UTxO-HD read and flush benchmarks" src="/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png" width="1600" height="800" class="img_ev3q"></p><p>After months of hard work adding tests for the prototype, we are ready to run
+end-to-end tests on the node, and system level benchmarks. This signals a very
+important milestone for the UTxO-HD workstream 🎉.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We elaborated a <a href="https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md" target="_blank" rel="noopener noreferrer">high-level decomposition</a> of the remaining
+work for Genesis. We also continued benchmarking the chain-sync-jumping
+happy-path.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.
+<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href="https://github.com/input-output-hk/cardano-ledger/pull/3262" target="_blank" rel="noopener noreferrer">pull
+request</a> to facilitate compiling consensus.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-25-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-01-26-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-25-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD Prototype</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-01-25 - 2023-02-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4853" target="_blank" rel="noopener noreferrer">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4848" target="_blank" rel="noopener noreferrer">Remove hlint from nix required CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4838" target="_blank" rel="noopener noreferrer">Remove reconfigure-hlint.sh script</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4837" target="_blank" rel="noopener noreferrer">Fix hlint warnings</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4833" target="_blank" rel="noopener noreferrer">Implement ADR-2: Restructure modules for generators</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4803" target="_blank" rel="noopener noreferrer">Stylish Haskell in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4802" target="_blank" rel="noopener noreferrer">Revert skip doc in ci</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4800" target="_blank" rel="noopener noreferrer">Skip CI on doc only changes</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4792" target="_blank" rel="noopener noreferrer">Skip CI if only changes are documentation</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4776" target="_blank" rel="noopener noreferrer">Build all of cardano-node in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4766" target="_blank" rel="noopener noreferrer">Check cabal files in CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4785" target="_blank" rel="noopener noreferrer">Straight line error handling</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4787" target="_blank" rel="noopener noreferrer">New NodeToClientVersionOf typeclass</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4832" target="_blank" rel="noopener noreferrer">Remove NoImplicitPrelude from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4809" target="_blank" rel="noopener noreferrer">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4808" target="_blank" rel="noopener noreferrer">Use hoistMaybe</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4788" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4805" target="_blank" rel="noopener noreferrer">New query stake-snapshot integration test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4671" target="_blank" rel="noopener noreferrer">Make leadership-schedule test less flaky</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-26T00:00:00.000Z" itemprop="datePublished">January 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href="https://github.com/input-output-hk/mithril/issues/688" target="_blank" rel="noopener noreferrer">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href="https://github.com/input-output-hk/mithril/issues/689" target="_blank" rel="noopener noreferrer">#689</a></li><li>Implement the mechanism for the signature registration <a href="https://github.com/input-output-hk/mithril/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Implement the mechanism for epoch settings <a href="https://github.com/input-output-hk/mithril/issues/695" target="_blank" rel="noopener noreferrer">#695</a></li><li>Implement the mechanism for certificate pending <a href="https://github.com/input-output-hk/mithril/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Implement the mechanism for certificate <a href="https://github.com/input-output-hk/mithril/issues/697" target="_blank" rel="noopener noreferrer">#697</a></li><li>Implement the mechanism for snapshots list <a href="https://github.com/input-output-hk/mithril/issues/698" target="_blank" rel="noopener noreferrer">#698</a></li><li>Implement the mechanism for snapshot <a href="https://github.com/input-output-hk/mithril/issues/699" target="_blank" rel="noopener noreferrer">#699</a></li><li>Update enforcement of API version with Semver <a href="https://github.com/input-output-hk/mithril/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-26-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-27T00:00:00.000Z" itemprop="datePublished">January 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,
+contributors and interested people from the community. The monthly repot for
+<a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a> is a digest
+of the things presented and also includes a summary of the meeting. The Hydra
+specification was getting discussed and the team is incorporating suggested
+changes of reviewers. Last but not least, they compute and publish script
+information on every PR and also on the
+<a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a>
+now.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-27-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-02-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-26-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-02T00:00:00.000Z" itemprop="datePublished">February 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Much of the work the past two weeks involved integration efforts,
+cleaning up and debugging some serialization issues,
+adding tests, and work on large projects that are still ongoing.
+We also released a CIP this week that aims to make the ledger
+a registered CIP category.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-evolution-cip">Ledger evolution CIP<a class="hash-link" href="#ledger-evolution-cip" title="Direct link to heading">​</a></h3><p>We published a
+<a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP</a>
+that will make the Cardano ledger a registered category of the CIP process.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="serialization-issues">Serialization issues<a class="hash-link" href="#serialization-issues" title="Direct link to heading">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,
+but it turned out to just be particularly confusing code.
+We have now clarified the issue for the future.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tests">New tests<a class="hash-link" href="#new-tests" title="Direct link to heading">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-a-better-cost-model-serialization-situation">Progress on a better cost model serialization situation.<a class="hash-link" href="#progress-on-a-better-cost-model-serialization-situation" title="Direct link to heading">​</a></h3><p>We are still working our way through <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+Towards this end, we are now properly gating the new flexible encoders
+until version 9.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nightly-tests">Nightly tests<a class="hash-link" href="#nightly-tests" title="Direct link to heading">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.
+See the previous ledger update for more information about this project.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-02-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-03-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-01-27-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#ledger-evolution-cip" class="table-of-contents__link toc-highlight">Ledger evolution CIP</a></li><li><a href="#serialization-issues" class="table-of-contents__link toc-highlight">Serialization issues</a></li><li><a href="#new-tests" class="table-of-contents__link toc-highlight">New tests</a></li><li><a href="#progress-on-a-better-cost-model-serialization-situation" class="table-of-contents__link toc-highlight">Progress on a better cost model serialization situation.</a></li><li><a href="#nightly-tests" class="table-of-contents__link toc-highlight">Nightly tests</a></li><li><a href="#constraint-based-generators" class="table-of-contents__link toc-highlight">Constraint based generators</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril&#x27;s core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used &#x27;as-a-service&#x27;. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it&#x27;s trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a> is finally merged, and we are ready to merge <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><p>The GitHub Action <a href="https://github.com/fernandrone/linelint" target="_blank" rel="noopener noreferrer">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-08-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-03-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been preparing several papers for peer review
+and knowledge sharing and consulting within IO and the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC
+2023 conference</li><li>Finished preparing and submitted a paper on performance engineering
+to an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design
+refinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-03-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-03-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about
+rollbacks and updated graphs
+(<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>). In a next step,
+the specification will be made more approachable and an open standard. They
+improved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox
+environment and continued aligning the <code>hydra-plutus</code> scripts with the
+specification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs
+<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href="https://github.com/input-output-hk/hydra/pull/677" target="_blank" rel="noopener noreferrer">#677</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-03-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-02-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level
+benchmarks. We have created a new repository that contains the <code>anti-diff</code>
+packages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to
+audit the implementation design, and we continued working on basic tests and
+simplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR
+encoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for
+the system level benchmarks to confirm if the performance of the prototype is
+satisfactory.</p><p>We also set up a repository for the <a href="https://github.com/input-output-hk/anti-diffs" target="_blank" rel="noopener noreferrer"><code>anti-diff</code></a> package, which
+required us to refactor the code, write documentation, and prepare a release to
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4347" target="_blank" rel="noopener noreferrer">basic tests</a> for the <em>Limit on Eagerness</em> property of
+Genesis. We also introduced further robustness and simplifications in the
+Genesis Density governor. Finally, we developed a presentation to engage again
+with the researchers on our Genesis implementation design.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We are in the process of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/6" target="_blank" rel="noopener noreferrer">polishing</a> the <code>ouroboros-consensus</code>
+documentation site, which we will use a the entry point for Consensus related
+documentation. The first version will not be complete, but we plan on
+systematically improving it.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4335" target="_blank" rel="noopener noreferrer">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows
+to dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href="https://github.com/input-output-hk/ouroboros-network/pull/4339" target="_blank" rel="noopener noreferrer">another tool</a> that serves an existing immutable DB via
+BlockFetch and ChainSync. This tool can help in assisting our local benchmarking
+efforts (for instance Genesis&#x27; ChainSync jumping prototype).</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-09-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-08-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD Prototype</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-02-08 - 2023-02-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4889" target="_blank" rel="noopener noreferrer">Remove use of multiline literals</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4775" target="_blank" rel="noopener noreferrer">Markdown links CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Date ranges for copyright</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4894" target="_blank" rel="noopener noreferrer">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4885" target="_blank" rel="noopener noreferrer">Disallow empty cost model for create update proposal</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4815" target="_blank" rel="noopener noreferrer">Refactor code using onLeft and onNothing</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4876" target="_blank" rel="noopener noreferrer">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we&#x27;re currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we&#x27;ve performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we&#x27;re performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we&#x27;re redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>A rework of the new tracing system&#x27;s internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we&#x27;ll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-08-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-03-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-09T00:00:00.000Z" itemprop="datePublished">February 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-09-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-10-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-08-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-10T00:00:00.000Z" itemprop="datePublished">February 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts
+implementation further with the specification. This also resulted in a slight
+improvement on Hydra script size and costs. They consequently analysed the
+asymptotic complexity of collect and fanout and how they relate. Also plutus-tx
+profiling toolchain was evaluated and set up for future improvements on Hydra
+on-chain performance. In discussions with researchers and internal auditors,
+they also uncovered next steps on further securing the Head protocl using a
+&quot;full&quot; minting policy.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a><ul><li>Allow contest only once <a href="https://github.com/input-output-hk/hydra/pull/680" target="_blank" rel="noopener noreferrer">#680</a></li><li>Optimization through head output at index 0 <a href="https://github.com/input-output-hk/hydra/pull/700" target="_blank" rel="noopener noreferrer">#700</a></li><li>Value is preserved <a href="https://github.com/input-output-hk/hydra/pull/702" target="_blank" rel="noopener noreferrer">#702</a> + optimized exact value equality <a href="https://github.com/input-output-hk/hydra/pull/709" target="_blank" rel="noopener noreferrer">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href="https://github.com/input-output-hk/hydra/pull/721" target="_blank" rel="noopener noreferrer">#721</a><img loading="lazy" src="https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png" class="img_ev3q"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">this</a> idea ticket and <a href="https://github.com/input-output-hk/hydra/milestone/8" target="_blank" rel="noopener noreferrer">milestone</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-10-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-17-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-09-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril&#x27;s core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-21-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, distributivity properties of deltaQ, and consulting
+on performance design with the Marlowe team.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning
+paper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for
+draft paper about verifying design refinements for distributed
+system design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-17-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests
+during the contestation period. These will now always push out the deadline and
+hence contestation periods are easier to pick (depending on the network a Head
+runs on). Furthermore, they added an important acceptance test and completed
+internal refactoring of the protocol logic making future changes easier.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Push contestation deadline on each contest <a href="https://github.com/input-output-hk/hydra/pull/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> into dedicated features</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete full minting policy <a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-17-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>
+and <code>ouroboros-network</code> repositories.
+The vast majority of the effort involved all the changes to the ledger serialization libraries
+(and the interplay with <code>cardano-base</code>) which now support proper versioning.
+Supporting the conway ledger era, and in particular allowing the ledger state to transition
+to a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the
+documentation, make our testing infrastructure better (such as experimenting with better
+nightly tests), and formally specifying more parts of CIP-1694.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from
+the current ledger master. Many thanks to
+<a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer">Alexey</a> for this colossal undertaking!</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted
+in the CBOR specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by
+<code>cabal format</code> in our CI. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running
+property based tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-documentation-improvements">Small documentation improvements<a class="hash-link" href="#small-documentation-improvements" title="Direct link to heading">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the
+Shelley ledger specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="specifying-cip-1694">Specifying CIP-1694<a class="hash-link" href="#specifying-cip-1694" title="Direct link to heading">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!
+Upgrading to Agda 2.6.3 fixed our main build infrastructure problems,
+and we no longer have to rely on our custom fork. See <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/50" target="_blank" rel="noopener noreferrer">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/40" target="_blank" rel="noopener noreferrer">pull-40</a></li><li>the corresponding Haskell: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h3><p>We are still actively working on our new constraint based property testing framework.
+We have nearly all of the constraints for an entire ledger state
+hooked into generators, and tests that the generators do indeed obey the constraints.
+The variable count in the constraints is over 100!
+There is still much work to do on shrinking, making the generators faster,
+and writing actual property tests for the ledger, but the approach still seems viable and
+we are hopeful that it could replace our trace generators.
+The WIP can be followed here: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-17-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#integration-work" class="table-of-contents__link toc-highlight">Integration work</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#small-documentation-improvements" class="table-of-contents__link toc-highlight">Small documentation improvements</a></li><li><a href="#specifying-cip-1694" class="table-of-contents__link toc-highlight">Specifying CIP-1694</a></li><li><a href="#constraint-based-testing" class="table-of-contents__link toc-highlight">Constraint based testing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one
+fix to <code>1.35.6</code> release, another one will likely be part of next release.  The
+first one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These
+bugs could only affect nodes which are out of sync and thus should not impose
+risk on well maintained nodes on mainnet.  We also advertise to deploy at most
+one of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started
+implementing it (see <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205" target="_blank" rel="noopener noreferrer">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query
+network protocol versions (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with
+<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">* monoidal-synchronisation-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* cardano-client-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* network-mux-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-api-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-testing-0.2.0.1</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-mock-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-framework-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-0.4.0.0 (it doesn&#x27;t not yet include the fix we included</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  in `0.3.0.1`)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-17-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-10-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-21T00:00:00.000Z" itemprop="datePublished">February 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.
+We also investigated and had the first working UTxO-HD integration which is one
+of the potential future risks for db-sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn&#x27;t
+use the full on disk storage but keeps things in memory and the plan is to keep
+it this way for the first iteration. The integration still has some performance
+issues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1353" target="_blank" rel="noopener noreferrer">#1353</a></li><li>Continued with ghc-9.2 integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1339" target="_blank" rel="noopener noreferrer">#1339</a></li><li>Worked on an new fixing procedure for
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1348" target="_blank" rel="noopener noreferrer">#1348</a>.
+We try to make these procedures work also on older schema version, without the
+need to migrate to newer schema, which can be very useful for fixing existing
+snapshots.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-21-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-22-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-17-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks
+for UTxO HD. They showed a substantial performance regression, so we spent some
+time analyzing the results. We found out the frequency at which ledger snapshots
+were taken was too high, so we requested the benchmarking team a new run with a
+more realistic snapshotting policy. We continued refactoring and improving the
+prototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis
+design, which was well received. We continued working on testing and
+benchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work
+derived in several improvements such as better documentation, a framework for
+writing unit (and regression) tests, and the possibility of debugging
+<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and
+<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed
+to indicate a significant regression in performance. After looking into the
+benchmark logs we found that the benchmark runs took ledger state snapshots too
+often, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so
+small in the benchmark runs. Therefore, the next step is to re-run the
+benchmarks with a snapshotting policy that more closely resembles the one from
+mainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,
+<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and
+<code>cardano-lmdb-simple</code>) to <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from
+NSol. It was well received. They pointed out one blindspot, but we think it&#x27;ll
+be relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis
+prototypes. I particular we tested and implemented a potential fix for
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022" target="_blank" rel="noopener noreferrer">increased ChainDB dequeue timings</a>, which partly
+behaved as we expected, but still needs further investigation. Also we obtained
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031" target="_blank" rel="noopener noreferrer">new benchmarking data</a> for the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Related to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>, we developed a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4379" target="_blank" rel="noopener noreferrer">DSL</a> for specifying
+<code>ChainDB</code> unit tests. This will allow us to better understand the
+counter-examples returned by QuickCheck tests, and to write <a href="https://github.com/input-output-hk/ouroboros-network/pull/4383" target="_blank" rel="noopener noreferrer">regression
+tests</a> for them. Also, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4358" target="_blank" rel="noopener noreferrer">added a module</a> to enable
+QuickCheck counter-examples to be run on the REPL, allowing for faster debugging
+feedback. Also, we improved the documentation related to followers
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4372" target="_blank" rel="noopener noreferrer">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the
+future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>
+0.3.0.0 to CHaP. Remember that we decided to split the packages related to
+Consensus into two bundles, one with the core functionality, Cardano-agnostic
+code, and another bundle with instantiations specific to Cardano.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-22-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-23-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-22-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD Prototype</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-02-22 - 2023-03-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4882" target="_blank" rel="noopener noreferrer">Fix some markdown links</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4881" target="_blank" rel="noopener noreferrer">Update changelog with PR4788 changes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4901" target="_blank" rel="noopener noreferrer">Remove pattern Tx</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4949" target="_blank" rel="noopener noreferrer">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4932" target="_blank" rel="noopener noreferrer">New build complete job</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4764" target="_blank" rel="noopener noreferrer">Update ouroboros-network</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --node-socket-path cli option</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4823" target="_blank" rel="noopener noreferrer">Straight line code for tx commands</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4655" target="_blank" rel="noopener noreferrer">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyConŻtent and related types</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4825" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops 2</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3783" target="_blank" rel="noopener noreferrer">Transaction debug script command</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-22-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href="https://github.com/input-output-hk/mithril/issues/718" target="_blank" rel="noopener noreferrer">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href="https://github.com/input-output-hk/mithril/issues/738" target="_blank" rel="noopener noreferrer">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href="https://github.com/input-output-hk/mithril/issues/740" target="_blank" rel="noopener noreferrer">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href="https://github.com/input-output-hk/mithril/issues/741" target="_blank" rel="noopener noreferrer">#741</a></li><li>Completed the creation of the signer registration event <a href="https://github.com/input-output-hk/mithril/issues/742" target="_blank" rel="noopener noreferrer">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href="https://github.com/input-output-hk/mithril/issues/743" target="_blank" rel="noopener noreferrer">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href="https://github.com/input-output-hk/mithril/issues/732" target="_blank" rel="noopener noreferrer">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/755" target="_blank" rel="noopener noreferrer">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href="https://github.com/input-output-hk/mithril/issues/760" target="_blank" rel="noopener noreferrer">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href="https://github.com/input-output-hk/mithril/issues/757" target="_blank" rel="noopener noreferrer">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/730" target="_blank" rel="noopener noreferrer">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href="https://github.com/input-output-hk/mithril/issues/765" target="_blank" rel="noopener noreferrer">#765</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-23-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-24-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-23-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp">SECP<a class="hash-link" href="#secp" title="Direct link to heading">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We&#x27;re currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system&#x27;s introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We&#x27;re currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nixops-backend">NixOps backend<a class="hash-link" href="#nixops-backend" title="Direct link to heading">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-23-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-02-23-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-22-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#secp" class="table-of-contents__link toc-highlight">SECP</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#1356-release" class="table-of-contents__link toc-highlight">1.35.6 release</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li><li><a href="#nixops-backend" class="table-of-contents__link toc-highlight">NixOps backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-02-24T00:00:00.000Z" itemprop="datePublished">February 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the
+implementation with the specification. More over, they have groomed a plan to
+make Hydra Mainnet compatible. Also, they continue moving forward with the
+internal auditing and have published some auditing guidelines to receive
+contributions from the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> (what is
+remaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec
+<a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> and drafted a
+0.10.0 version</li><li>Added a tutorial by <a href="https://github.com/perturbing/" target="_blank" rel="noopener noreferrer">@perturbing</a> to the
+website <a href="https://hydra.family/head-protocol/docs/tutorial/" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Published auditing guidelines
+<a href="https://hydra.family/head-protocol/audit-guidelines" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Made hydra-node work for macos
+<a href="https://github.com/input-output-hk/hydra/issues/746" target="_blank" rel="noopener noreferrer">#746</a> and added support
+for building on aarch64
+<a href="https://github.com/input-output-hk/hydra/issues/673" target="_blank" rel="noopener noreferrer">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-24-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-02-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-23-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-02T00:00:00.000Z" itemprop="datePublished">March 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing
+forward implementation of eclipse evasion.  We also found a bug in our
+simulation testing setup (in integration of test node).  We also overviewed the
+work on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and
+<code>ouroboros-network-protocols-0.3.0.0</code> to <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/147" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to
+configure inbound connection limits, see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it&#x27;s
+validation of DNS names, IP address &amp; ports when registering a stake pool
+should be more strict to protect against common mistakes which we identified on
+the chain.  See <a href="https://github.com/input-output-hk/cardano-node/issues/4929" target="_blank" rel="noopener noreferrer">issue #4929</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-work-log">Detailed work log<a class="hash-link" href="#detailed-work-log" title="Direct link to heading">​</a></h2><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> we fixed two bugs in peer state actions.  First one results in
+a busy loop if demotion from hot to warm times outs.  This busy loop is
+eventually exited when mux exits (we reported this in our previous report).
+This fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm
+-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixed a bug in a node only used in simulation which
+resulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the
+review process, we realised that the header-body split in the simulated node
+requires further work (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a>, which is under review).</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also extend our generators, which together with the above fix,
+cover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays
+similar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across
+simulated restarts) store of blocks which does chain selection.  This ensures
+that the simulated node is using <code>block-fetch</code> to download blocks announced by
+<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">PR #4019</a> - peer sharing.</p><p>We also fixed <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue #4370</a> - a connection manager test failure, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4384" target="_blank" rel="noopener noreferrer">PR #4384</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-02-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-03-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-02-24-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#detailed-work-log" class="table-of-contents__link toc-highlight">Detailed work log</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Bumped to version <a href="https://crates.io/crates/kes-summed-ed25519/0.2.0" target="_blank" rel="noopener noreferrer">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href="https://github.com/input-output-hk/mithril/pull/773" target="_blank" rel="noopener noreferrer">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href="https://github.com/input-output-hk/mithril/pull/774" target="_blank" rel="noopener noreferrer">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. 	</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-08-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-03-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, improving the deltaQ tutorial, consulting on
+performance design, and the Djed paper has been accepted for
+publication.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ
+tutorial based on experience with systems that manage risk at
+multiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency
+laws for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>&quot;Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin
+Protocol&quot; has been accepted for publication at IEEE ICBC 2023</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-03-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-03-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version
+<a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a> - a version
+of the <code>hydra-node</code> with fully specified behavior of on-chain scripts and
+off-chain head-logic, decreased costs for opening/closing a Head and scalable
+contestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">monthly
+report</a> of the Hydra project
+and conducted a review meeting with an increasingly wider audience. The team
+plans to extend invitations through the new Hydra
+<a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> discord channel for the next
+months, stay tuned!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with report published <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">on website</a></li><li>Fixed smoke tests <a href="https://github.com/input-output-hk/hydra/pull/726" target="_blank" rel="noopener noreferrer">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href="https://github.com/input-output-hk/hydra/pull/748" target="_blank" rel="noopener noreferrer">#748</a> + head reference script <a href="https://github.com/input-output-hk/hydra/pull/701" target="_blank" rel="noopener noreferrer">#701</a>)</li><li>Released version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li><li>New discord category with <a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href="https://github.com/orgs/input-output-hk/projects/21/views/26" target="_blank" rel="noopener noreferrer">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-03-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-03-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger
+work into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-rules">Conway rules<a class="hash-link" href="#conway-rules" title="Direct link to heading">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec
+with respect to the ratification and enactment logic.</p><p>See the notes in <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a> for more details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing
+support for the main ledger properties.
+The new constraint based generators can now generate full ledger states with what is probably
+very close to the real constraints (if anything, it is under constrained).
+Next we will work on generating a transaction in the context of a ledger state, which would allow
+us to actually start using these generators for real tests.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="preparing-a-release-now-with-proper-versioning">Preparing a release, now with proper versioning<a class="hash-link" href="#preparing-a-release-now-with-proper-versioning" title="Direct link to heading">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new
+version of consensus, using CHaPs.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are
+lexicographically ordered in the Plutus script context. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation
+(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>.</li><li>We improved our nightly tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-03-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-02-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-rules" class="table-of-contents__link toc-highlight">Conway rules</a></li><li><a href="#constraint-based-generators" class="table-of-contents__link toc-highlight">Constraint based generators</a></li><li><a href="#preparing-a-release-now-with-proper-versioning" class="table-of-contents__link toc-highlight">Preparing a release, now with proper versioning</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD
+prototype, and introducing improvements to the <code>lmdb</code> related packages. In
+particular we identified an opportunity to gain performance by handling locks in
+a more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and
+Researchers caught. We also came op with a road map for not only testing the
+Genesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created
+component-level micro-benchmarks for adding transactions to the mempool. The
+results of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href="https://input-output-hk.github.io/ouroboros-consensus/" target="_blank" rel="noopener noreferrer">web
+page</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>
+repository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time
+GitHub actions take in <code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a
+result of the first round of sytem-level benchmarks, we identified an
+opportunity to optimise the way we handle locks to improve performance
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4393" target="_blank" rel="noopener noreferrer">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/19" target="_blank" rel="noopener noreferrer">New tests</a> for read-only transaction handles.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/18" target="_blank" rel="noopener noreferrer">New functions</a> and <a href="https://github.com/input-output-hk/lmdb-simple/pull/13" target="_blank" rel="noopener noreferrer">data types</a>.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/11" target="_blank" rel="noopener noreferrer">Updates</a> to support improved type safety and smaller constraints in
+the UTxO HD prototype.</li><li>Windows and MacOS <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">CI support</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in
+the Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early
+milestones that are applicable to today&#x27;s master branch, ie tests that are
+useful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for
+the Honest leader schedule and one as-aggressive-as-possible Adversarial
+leader schedule that together satisfy the Praos properties that the Consensus
+design takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves
+differently in the baseline compared to the prototype, and we are close to
+having a full picture of how the Consensus components interact during bulk sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4400" target="_blank" rel="noopener noreferrer">created</a> component-level micro-benchmarks for adding transactions
+to the mempool. We plan on extending this to more mempool actions and different
+types of blocks. We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4422" target="_blank" rel="noopener noreferrer">store</a> the benchmark data to make it available
+to the GitHub action that <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/12" target="_blank" rel="noopener noreferrer">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4429" target="_blank" rel="noopener noreferrer">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4423" target="_blank" rel="noopener noreferrer">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus
+packages.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We finished moving the Consensus documentation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4374" target="_blank" rel="noopener noreferrer">from</a>
+<code>ouroboros-network</code> <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">to</a> <code>ouroboros-consensus</code>, in preparation for
+migrating the code to the latter repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4412" target="_blank" rel="noopener noreferrer">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4421" target="_blank" rel="noopener noreferrer">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,
+thereby reducing the time CI jobs take.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-09-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-08-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#utxo-hd-prototype" class="table-of-contents__link toc-highlight">UTxO HD Prototype</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-03-08 - 2023-03-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes and some refactoring </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4958" target="_blank" rel="noopener noreferrer">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5003" target="_blank" rel="noopener noreferrer">Add missing imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5001" target="_blank" rel="noopener noreferrer">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4967" target="_blank" rel="noopener noreferrer">Remove unnecessary functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4953" target="_blank" rel="noopener noreferrer">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4686" target="_blank" rel="noopener noreferrer">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4683" target="_blank" rel="noopener noreferrer">Derive Eq instance for AcquiringFailure</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4682" target="_blank" rel="noopener noreferrer">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4344" target="_blank" rel="noopener noreferrer">Remove unnecessary validation of Data</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3775" target="_blank" rel="noopener noreferrer">Remove hint of &quot;string&quot; support for ScriptData</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4988" target="_blank" rel="noopener noreferrer">Conway hard forks on prot-ver 9</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4968" target="_blank" rel="noopener noreferrer">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4921" target="_blank" rel="noopener noreferrer">Take all dependencies from Hackage or CHaP</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4729" target="_blank" rel="noopener noreferrer">fix cardano-testnet Babbage genesis.json</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-08-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-08-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis-pipeline">Analysis pipeline<a class="hash-link" href="#analysis-pipeline" title="Direct link to heading">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better
+differentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.
+Additionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking
+data more easily accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we&#x27;re currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we&#x27;ve begun working on a small visualization demo and interactive API documentation. Those will enable
+third parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make
+the switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-08-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-03-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#1356-release" class="table-of-contents__link toc-highlight">1.35.6 release</a></li><li><a href="#analysis-pipeline" class="table-of-contents__link toc-highlight">Analysis pipeline</a></li><li><a href="#open-sourcing" class="table-of-contents__link toc-highlight">Open Sourcing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-09T00:00:00.000Z" itemprop="datePublished">March 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href="https://github.com/input-output-hk/mithril/issues/752" target="_blank" rel="noopener noreferrer">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href="https://github.com/input-output-hk/mithril/issues/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Worked on handling the API version with an era switch <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href="https://github.com/input-output-hk/mithril/issues/665" target="_blank" rel="noopener noreferrer">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href="https://github.com/input-output-hk/mithril/issues/769" target="_blank" rel="noopener noreferrer">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href="https://github.com/input-output-hk/mithril/issues/791" target="_blank" rel="noopener noreferrer">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-09-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-10-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-08-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-10T00:00:00.000Z" itemprop="datePublished">March 10, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a
+Hydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved
+the test suite of the <code>hydra-plutus</code> scripts. The specification is constantly
+getting improved upon reviewer feedback on overleaf - this week the graphical
+notation was refined to be more transaction-focused.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href="https://github.com/input-output-hk/hydra/issues/737" target="_blank" rel="noopener noreferrer">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href="https://github.com/input-output-hk/hydra/pull/715" target="_blank" rel="noopener noreferrer">#715</a></li><li>Improved our mutation test suite to all expected errors <a href="https://github.com/input-output-hk/hydra/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-10-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-16-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-09-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-16T00:00:00.000Z" itemprop="datePublished">March 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers
+improving the deltaQ tutorial, consulting on performance design, and
+the final version of the Djed paper.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial
+improvement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation
+proofs for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-16-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-17-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-10-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381&#x27;s PR approved, only blocker is Windows&#x27; CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Merged <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch approved <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. Blocker is Windown&#x27;s CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href="https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md" target="_blank" rel="noopener noreferrer">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can&#x27;t use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it&#x27;s C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-21-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-17-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the
+hydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added
+some detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA
+per commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra
+Head on the Cardano mainnet, ideally just in time for the monthly review
+meeting. See the hydra channels on the IOG Technical Community discord server
+for details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node
+<a href="https://github.com/input-output-hk/hydra/pull/763" target="_blank" rel="noopener noreferrer">#763</a></li><li>Pay back funds to faucet after smoke-test run
+<a href="https://github.com/input-output-hk/hydra/pull/773" target="_blank" rel="noopener noreferrer">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet
+<a href="https://github.com/input-output-hk/hydra/pull/775" target="_blank" rel="noopener noreferrer">#775</a></li><li>Created golden tests to assure the script hash stays the same between
+changes <a href="https://github.com/input-output-hk/hydra/pull/772" target="_blank" rel="noopener noreferrer">#772</a></li><li>Removed hardcoded error codes in plutus scripts
+<a href="https://github.com/input-output-hk/hydra/pull/768" target="_blank" rel="noopener noreferrer">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state
+<a href="https://github.com/input-output-hk/hydra/pull/767" target="_blank" rel="noopener noreferrer">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-17-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-17-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made further progress on the conway ledger era.
+In particular, we expanded the ledger API significantly, including lots of governance features.
+We also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed
+technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-ledger-api">Expanded ledger API<a class="hash-link" href="#expanded-ledger-api" title="Direct link to heading">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-rules">Conway ledger rules<a class="hash-link" href="#conway-ledger-rules" title="Direct link to heading">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.
+Moreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="incremental-spodrep-stake-distribution-computation">Incremental SPO/DRep stake distribution computation<a class="hash-link" href="#incremental-spodrep-stake-distribution-computation" title="Direct link to heading">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus
+to maintain several of the stake distributions incrementally.
+For the per-SPO distribution, this is a performance improvement.
+For the (conway) per-DRep distribution, this is will allow those who have delegated their votes
+to a DRep to have time to react to any votes that they disapprove of.
+(Sorry, no code to share just yet, more to come.)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>Improved CBOR testing facilities <a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a></li><li>GitHub actions improvement <a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3323</a></li><li>Minor OCert improvements <a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a></li><li>Remove duplication <a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a> </li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-17-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-16-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#expanded-ledger-api" class="table-of-contents__link toc-highlight">Expanded ledger API</a></li><li><a href="#conway-ledger-rules" class="table-of-contents__link toc-highlight">Conway ledger rules</a></li><li><a href="#incremental-spodrep-stake-distribution-computation" class="table-of-contents__link toc-highlight">Incremental SPO/DRep stake distribution computation</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-21T00:00:00.000Z" itemprop="datePublished">March 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P
+functionality.</p><p>We received reports from some SPOs who encountered problems with their non
+P2P block producing nodes not being able to connect to their P2P relay.  Karl
+Knutsson (from Cardano Foundation) reproduced this issue between two nodes (a
+non P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed
+it and found a bug in the legacy non p2p code.  The bug is only possible to
+trigger with a P2P node which is binding its outbound connection port to
+a fixed IP address and port (default in p2p).  A possible solution was found.
+For more information see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4465" target="_blank" rel="noopener noreferrer">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no
+longer available as a standalone binary, but instead it will become part of
+<code>cardano-cli</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger
+peers to the outbound governor, implemented tests and fixed found issues
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>).  We also made the information if a given peer plays the role of
+a big ledger peer to the mini-protocols.  This will allow to modify
+mini-protocol applications for such peers.   As part of this functionality we
+refactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see
+<a href="https://github.com/input-output-hk/io-sim/pull/73" target="_blank" rel="noopener noreferrer">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in
+<code>cardano-node</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">#4902</a>).</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-21-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-22-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-17-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD
+prototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>
+package, which provides a file-system abstraction layer that can be used for
+testing and simulation. This makes the Consensus code base smaller, while
+providing a package that the community can reuse and contribute to. We also
+fixed a failing property test related to iterators. We are also working on
+mempool and VRF improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-details">Low-level details<a class="hash-link" href="#low-level-details" title="Direct link to heading">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4425" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/1" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/2" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4460" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href="https://github.com/input-output-hk/fs-sim/pull/5" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/6" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/7" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/8" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/20" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/150" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-23-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-22-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-details" class="table-of-contents__link toc-highlight">Low-level details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-03-22 - 2023-04-05</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5041" target="_blank" rel="noopener noreferrer">Remove unused error constructors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5040" target="_blank" rel="noopener noreferrer">Remove use of AcquireFailure type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5038" target="_blank" rel="noopener noreferrer">Simplify implementation of executeQueryAnyMode</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5002" target="_blank" rel="noopener noreferrer">Script data serialisation</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4956" target="_blank" rel="noopener noreferrer">Guard against overflows in Shelley TxIns</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyContent and related types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5011" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test.</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-22-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-22-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we&#x27;re currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We&#x27;re working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we&#x27;re laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing">New tracing<a class="hash-link" href="#new-tracing" title="Direct link to heading">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe
+a slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-rts-parametrization">GHC RTS parametrization<a class="hash-link" href="#ghc-rts-parametrization" title="Direct link to heading">​</a></h3><p>We&#x27;re currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies
+on different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we&#x27;re refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we&#x27;re currently undertaking an effort to multi-layered documentation: a condensed version, as well
+as a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points
+for users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we&#x27;re laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will
+increase confidence in specific metrics.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis
+is patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We&#x27;re confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-22-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-21-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#new-tracing" class="table-of-contents__link toc-highlight">New tracing</a></li><li><a href="#ghc-rts-parametrization" class="table-of-contents__link toc-highlight">GHC RTS parametrization</a></li><li><a href="#open-sourcing" class="table-of-contents__link toc-highlight">Open Sourcing</a></li><li><a href="#general" class="table-of-contents__link toc-highlight">General</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on
+technical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an
+epoch, but also the first epoch of the last epoch.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1367" target="_blank" rel="noopener noreferrer">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn&#x27;t rollback and caused wrong values
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1370" target="_blank" rel="noopener noreferrer">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even
+though it was never used. Also refactored the no ledger part of the codebase.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1378" target="_blank" rel="noopener noreferrer">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or
+disables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync
+mainnet in hours.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1379" target="_blank" rel="noopener noreferrer">#1379</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-23-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-24-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-23-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2310.0" target="_blank" rel="noopener noreferrer"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the creation of a stake distribution service <a href="https://github.com/input-output-hk/mithril/issues/799" target="_blank" rel="noopener noreferrer">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href="https://github.com/input-output-hk/mithril/issues/810" target="_blank" rel="noopener noreferrer">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href="https://github.com/input-output-hk/mithril/issues/804" target="_blank" rel="noopener noreferrer">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href="https://github.com/input-output-hk/mithril/issues/807" target="_blank" rel="noopener noreferrer">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href="https://github.com/input-output-hk/mithril/issues/820" target="_blank" rel="noopener noreferrer">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href="https://github.com/input-output-hk/mithril/issues/801" target="_blank" rel="noopener noreferrer">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/803" target="_blank" rel="noopener noreferrer">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/818" target="_blank" rel="noopener noreferrer">#818</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-24T00:00:00.000Z" itemprop="datePublished">March 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review
+meeting for March. They demonstrated a Hydra Head on mainnet, which was running
+the hydraw demo application. While this marks an important milestone, they also
+emphasized that more features are still to be added as needed for applications
+to run on Hydra. Besides this, the roadmap is getting cleaned up to encourage
+discussions and provide more space for user requests.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting <a href="https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392" target="_blank" rel="noopener noreferrer">slides</a>/<a href="https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c" target="_blank" rel="noopener noreferrer">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a> and investigated a potential bug in rollback handling <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-24-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-27-system-test"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">System Test Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-23-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">System Test Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-27T00:00:00.000Z" itemprop="datePublished">March 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html" target="_blank" rel="noopener noreferrer">1.35.5</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html" target="_blank" rel="noopener noreferrer">1.35.6</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-27-system-test.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-31-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-24-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#workstreams" class="table-of-contents__link toc-highlight">Workstreams</a><ul><li><a href="#framework-improvements" class="table-of-contents__link toc-highlight">Framework improvements:</a></li><li><a href="#node" class="table-of-contents__link toc-highlight">Node:</a></li><li><a href="#db-sync" class="table-of-contents__link 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381&#x27;s PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch merged <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a" target="_blank" rel="noopener noreferrer">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f" target="_blank" rel="noopener noreferrer">JubJub</a> to our branch of halo2curves </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Minor reorg <a href="https://github.com/input-output-hk/musig2/pull/42" target="_blank" rel="noopener noreferrer">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">PR#</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-05-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final drafts of two papers
+for internal review and planning next steps of analysis of consensus
+design refiniments.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for
+distributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-31-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-31-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The
+semi-automated smoke tests and some missing documentation is still preventing
+from calling that fully done. They fixed smaller issues and made a step in the
+Head protocol more robust. Besides development, they met with interested people
+from the community who want to get started collaborating on communication and
+marketing materials.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href="https://github.com/input-output-hk/hydra/issues/560" target="_blank" rel="noopener noreferrer">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Completed configurable API feature <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-31-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-31-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We are still heavily involved in work related to preparing the next release.
+The other main thing we have worked on is experimentation about how we will
+handle the DRep stake distribution for CIP-1694 in the conway ledger era.
+Lastly, we merged a fix for
+<a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>
+into our main branch (there will be a post-mortem shortly).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support-for-the-next-release">Support for the next release<a class="hash-link" href="#support-for-the-next-release" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a> - Added helper functions for the CLI.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="experiments-for-drep-stake-distribution">Experiments for DRep stake distribution<a class="hash-link" href="#experiments-for-drep-stake-distribution" title="Direct link to heading">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.
+We would like to be able to use the current stake distribution at the epoch boundary
+for DRep voting so that people can always vote themselves in time for any proposal.
+To this end, we have a prototype of an incremental computation based on the incremental
+lambda calculus, together with tests and benchmarks (which are very promising).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate
+the new incremental computations.
+We have two draft PRs up for possibles solution.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-and-bug-fixes">Technical debt and bug fixes<a class="hash-link" href="#technical-debt-and-bug-fixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a> - A fix <a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a> - Removal of code duplication.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="documentation-changes">Documentation changes<a class="hash-link" href="#documentation-changes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a> - Rename &quot;optional datums&quot; with &quot;supplemental datums&quot; in the alonzo spec.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-03-31-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-27-system-test"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">System Test Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#support-for-the-next-release" class="table-of-contents__link toc-highlight">Support for the next release</a></li><li><a href="#experiments-for-drep-stake-distribution" class="table-of-contents__link toc-highlight">Experiments for DRep stake distribution</a></li><li><a href="#technical-debt-and-bug-fixes" class="table-of-contents__link toc-highlight">Technical debt and bug fixes</a></li><li><a href="#documentation-changes" class="table-of-contents__link toc-highlight">Documentation changes</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are
+now working on improving the DB lock mechanism to improve performance. We also
+introduced several improvements to the file system abstraction and simulation
+layer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and
+<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,
+soliciting feedback from Networking Team and IOG Researchers. We also opened up
+a PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being
+reviewed.</p><p>On the support front, we got a new Consensus version that can use different
+fundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was
+discovered by our <code>QuickCheck</code> property tests.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-06-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-05-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-04-05 - 2023-04-19</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5112" target="_blank" rel="noopener noreferrer">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5061" target="_blank" rel="noopener noreferrer">Remove --stake-address option from stake-address build</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5059" target="_blank" rel="noopener noreferrer">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5053" target="_blank" rel="noopener noreferrer">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5046" target="_blank" rel="noopener noreferrer">Move parsers to reusable location</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --socket-path cli option</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5108" target="_blank" rel="noopener noreferrer">CIP-1694 make space for DRep certificates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5105" target="_blank" rel="noopener noreferrer">File type to track the content and direction of files</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5087" target="_blank" rel="noopener noreferrer">Fix import warning</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5086" target="_blank" rel="noopener noreferrer">Expose UsingRawBytes et al types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5085" target="_blank" rel="noopener noreferrer">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5072" target="_blank" rel="noopener noreferrer">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5071" target="_blank" rel="noopener noreferrer">New genCardanoKeyWitness function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5069" target="_blank" rel="noopener noreferrer">Replace roundtripCBOR with trippingCbor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5064" target="_blank" rel="noopener noreferrer">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5063" target="_blank" rel="noopener noreferrer">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5057" target="_blank" rel="noopener noreferrer">Define Functor instance for FileError</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5049" target="_blank" rel="noopener noreferrer">Split serialisation from IO</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5115" target="_blank" rel="noopener noreferrer">Master build failure fixes</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5106" target="_blank" rel="noopener noreferrer">Allow renamed fields to exist if values the same</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5091" target="_blank" rel="noopener noreferrer">workbench: updates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5084" target="_blank" rel="noopener noreferrer">Delete duplicate packages sort packages and imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5110" target="_blank" rel="noopener noreferrer">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5099" target="_blank" rel="noopener noreferrer">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5083" target="_blank" rel="noopener noreferrer">Ergonomic directory creation code in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5036" target="_blank" rel="noopener noreferrer">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">Integrate latest ledger dependencies</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-05-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-05-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We&#x27;re profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>
+helped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very
+detailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing
+the highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we&#x27;ve worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions
+for tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance
+analysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we&#x27;ve created a profile family for the workbench that&#x27;s specifically aimed at measuring and comparing tracing system configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-library">Plutus library<a class="hash-link" href="#plutus-library" title="Direct link to heading">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.
+This will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.
+It is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is
+being improved to minimize any friction for the backend user.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-05-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-03-31-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#general" class="table-of-contents__link toc-highlight">General</a></li><li><a href="#plutus-library" class="table-of-contents__link toc-highlight">Plutus library</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-06T00:00:00.000Z" itemprop="datePublished">April 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href="https://github.com/input-output-hk/mithril/issues/817" target="_blank" rel="noopener noreferrer">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href="https://github.com/input-output-hk/mithril/issues/827" target="_blank" rel="noopener noreferrer">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href="https://github.com/input-output-hk/mithril/issues/828" target="_blank" rel="noopener noreferrer">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/824" target="_blank" rel="noopener noreferrer">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href="https://github.com/input-output-hk/mithril/issues/843" target="_blank" rel="noopener noreferrer">#843</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-06-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-07-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-05-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-07T00:00:00.000Z" itemprop="datePublished">April 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published the monthly report for March, created
+separate links for different versions of documentation, and clarified potential
+solutions for the Rollbacks bug. The team also discussed Query API requests for
+the Hydra Voting project and met with community members to answer questions
+about Hydra. Moving forward, the team plans to integrate the specification into
+the repository, implement a short-term fix for the Rollbacks issue, and draft a
+Query API ADR.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published monthly reports on <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href="https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">released</a> vs. <a href="https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-07-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-14-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-06-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has submitted two papers for publication, carried
+out consultancy with other teams and has an opening for an intern.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-14-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-17-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Incident Report</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-14-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer
+tooling, and improving the API for voting use cases. They reviewed progress on
+auction, payments, and voting projects and made worked on reproducing a bug with
+handling rollbacks. Moving forward, the team plans to update dependencies,
+implement a dirt road fix for the rollbacks bug, and explore adding Hydra
+support to kupo.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node
+used in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href="https://github.com/input-output-hk/hydra/pull/808" target="_blank" rel="noopener noreferrer">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href="https://github.com/input-output-hk/hydra/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-14-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-14-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-07-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Incident Report</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-17T00:00:00.000Z" itemprop="datePublished">April 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="incident-reporting-cardano-block-production-temporary-outage">Incident reporting: Cardano block production temporary outage<a class="hash-link" href="#incident-reporting-cardano-block-production-temporary-outage" title="Direct link to heading">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.
+The investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.
+Following successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.
+With the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="further-details">Further Details<a class="hash-link" href="#further-details" title="Direct link to heading">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href="https://www.314pool.com/post/cardano-post-mortem-1" target="_blank" rel="noopener noreferrer">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-17-incident.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-19-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-14-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#incident-reporting-cardano-block-production-temporary-outage" class="table-of-contents__link toc-highlight">Incident reporting: Cardano block production temporary outage</a><ul><li><a href="#further-details" class="table-of-contents__link toc-highlight">Further Details</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism
+for UTxO-HD, and modifications to the mempool benchmarks that this prototype
+requires.</p><p>On the Genesis front we validated that the fragment size calculation in
+<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it
+we will get performance that is acceptably close to that of the baseline. We
+also started investigating a performance fix that does not alter the existing
+baseline behavior too much. In addition we reviewed our Genesis attack vector
+calculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving
+our release process, to support the Cardano-wide efforts in this area. We also
+performed an analysis on the number of file descriptors that consensus use. This
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-19-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-20-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-19-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We&#x27;re working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we&#x27;ve laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the
+<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial
+in locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of
+benchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still
+ongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we&#x27;re working with the implementation
+of data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational
+burden inside the node needs to be kept to an absolute minimum. We&#x27;re currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer
+feature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-manifest">Detailed manifest<a class="hash-link" href="#detailed-manifest" title="Direct link to heading">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.
+These dependencies come from different package sources, have different versioning policies, and an identical package version might provide different
+performance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated
+by making all component bumps visible and accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-profiling-inside-workbench">GHC profiling inside workbench<a class="hash-link" href="#ghc-profiling-inside-workbench" title="Direct link to heading">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of
+profiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already
+been merged to <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.
+This results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-19-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-19-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-17-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Incident Report</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#detailed-manifest" class="table-of-contents__link toc-highlight">Detailed manifest</a></li><li><a href="#ghc-profiling-inside-workbench" class="table-of-contents__link toc-highlight">GHC profiling inside workbench</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href="https://github.com/input-output-hk/mithril/issues/816" target="_blank" rel="noopener noreferrer">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href="https://github.com/input-output-hk/mithril/issues/814" target="_blank" rel="noopener noreferrer">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href="https://github.com/input-output-hk/mithril/issues/829" target="_blank" rel="noopener noreferrer">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href="https://github.com/input-output-hk/mithril/issues/847" target="_blank" rel="noopener noreferrer">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href="https://github.com/input-output-hk/mithril/issues/848" target="_blank" rel="noopener noreferrer">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-20-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-21-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-20-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-04-20 - 2023-05-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5136" target="_blank" rel="noopener noreferrer">Modify golden test functions to automatically create parent directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5132" target="_blank" rel="noopener noreferrer">SPO on-chain poll commands adjustments</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5119" target="_blank" rel="noopener noreferrer">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5172" target="_blank" rel="noopener noreferrer"><code>--out-file</code> option for governance commands</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5130" target="_blank" rel="noopener noreferrer">UTC Time to slots conversion function</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5157" target="_blank" rel="noopener noreferrer">Update CHaP to get latest ledger with performance fix</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4854" target="_blank" rel="noopener noreferrer">Integration with Peer Sharing</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-20-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-20-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-19-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state
+machine continuity on-chain, discussing voting project solutions, exploring
+adding Hydra support to kupo, and improving API navigation with a sidebar. The
+team also updated dependencies and fixed issues in their test suites. Moving
+forward, the team plans to hold the next monthly review meeting, address a user
+issue, prepare for the 0.10.0 release, and work on a dirt road fix for the
+rollbacks issue with proper test coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href="https://github.com/input-output-hk/hydra/pull/777" target="_blank" rel="noopener noreferrer">#777</a>.</li><li>Took part in a twitter space on <a href="https://twitter.com/thepizzaknight_/status/1647833904282320896" target="_blank" rel="noopener noreferrer">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href="https://hydra.family/head-protocol/unstable/api-reference/" target="_blank" rel="noopener noreferrer">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting (join via <a href="https://discord.gg/inputoutput?event=1097863746216538194" target="_blank" rel="noopener noreferrer">Discord</a> or <a href="https://www.addevent.com/event/ck16794110" target="_blank" rel="noopener noreferrer">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a>.</li><li>Put the spec into the repo <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and prepare release 0.10.0.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-21-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-27-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-21-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.
+In particular, the conway era now supports Plutus V3.
+Finally, we made small improvements to the ledger API and now host
+our Haskell code documentation (haddocks) on github pages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3365" target="_blank" rel="noopener noreferrer">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3368" target="_blank" rel="noopener noreferrer">pull-3368</a>] - Conway genesis fix.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3369" target="_blank" rel="noopener noreferrer">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3372" target="_blank" rel="noopener noreferrer">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3384" target="_blank" rel="noopener noreferrer">pull-3384</a>] - Rename.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haddocks-hosted-on-github-pages">Haddocks hosted on github pages<a class="hash-link" href="#haddocks-hosted-on-github-pages" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3385" target="_blank" rel="noopener noreferrer">pull-3385</a>] </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-improvements-to-the-api">Small improvements to the API<a class="hash-link" href="#small-improvements-to-the-api" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3366" target="_blank" rel="noopener noreferrer">pull-3366</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3367" target="_blank" rel="noopener noreferrer">pull-3367</a>] Fix cost model json instances.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3371" target="_blank" rel="noopener noreferrer">pull-3371</a>] UMap cleanup.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3373" target="_blank" rel="noopener noreferrer">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3375" target="_blank" rel="noopener noreferrer">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3377" target="_blank" rel="noopener noreferrer">pull-3377</a>] Fix cabal warnings.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3383" target="_blank" rel="noopener noreferrer">pull-3383</a>] Fix multi-asset test.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-21-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-21-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-20-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-ledger-era" class="table-of-contents__link toc-highlight">Conway ledger era</a></li><li><a href="#haddocks-hosted-on-github-pages" class="table-of-contents__link toc-highlight">Haddocks hosted on github pages</a></li><li><a href="#small-improvements-to-the-api" class="table-of-contents__link toc-highlight">Small improvements to the API</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical Debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-27T00:00:00.000Z" itemprop="datePublished">April 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the
+report which likely is published next week. They put the spec into the
+repository and website, addressed a user issue and fixed the TUI peer list.
+Furthermore, they updated dependencies, conducted a Twitter space on Auctions
+use cases, covered the rollback bug with tests and implemented a solution.
+Looking ahead, their goals for next week include releasing 0.10.0, implementing
+timed transactions support, writing a Query API ADR, and grooming work items
+like off-chain benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository
+<a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and published on
+<a href="https://hydra.family/head-protocol/unstable/core-concepts/specification" target="_blank" rel="noopener noreferrer">the
+website</a></li><li>Groom and addressed user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href="https://github.com/input-output-hk/hydra/issues/832" target="_blank" rel="noopener noreferrer">#832</a></li><li>Groom off-chain benchmarks idea <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-27-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-28-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-21-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto&#x27;s library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href="https://github.com/input-output-hk/cardano-base/pull/384" target="_blank" rel="noopener noreferrer">#384</a></li><li>Open PR for including test vectors created with <a href="https://github.com/zkcrypto/bls12_381" target="_blank" rel="noopener noreferrer">zkscrypto</a>&#x27;s library, <a href="https://github.com/input-output-hk/cardano-base/pull/397" target="_blank" rel="noopener noreferrer">PR#397</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href="https://github.com/input-output-hk/cardano-base/pull/388" target="_blank" rel="noopener noreferrer">PR#388</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE&#x27;s repo</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-01-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-28-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros
+Praos to a newer foundation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-28-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-28-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href="https://hackage.haskell.org/package/io-classes" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>,</li><li><a href="https://hackage.haskell.org/package/io-classes-mtl" target="_blank" rel="noopener noreferrer"><code>io-classes-mtl</code></a></li><li><a href="https://hackage.haskell.org/package/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-stm" target="_blank" rel="noopener noreferrer"><code>strict-stm</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-mvar" target="_blank" rel="noopener noreferrer"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href="https://engineering.iog.io/2023-04-14-io-sim-annoucement" target="_blank" rel="noopener noreferrer">blog post</a>.  We made progress
+also on another blog post which will describes the design of the P2P networking
+layer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made
+<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of
+<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros-Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4281" target="_blank" rel="noopener noreferrer">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4527" target="_blank" rel="noopener noreferrer">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4532" target="_blank" rel="noopener noreferrer">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>
+support), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</li><li>Renamed a module: <a href="https://github.com/input-output-hk/io-sim/pull/88" target="_blank" rel="noopener noreferrer">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/io-sim/pull/83" target="_blank" rel="noopener noreferrer">io-sim#83</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:
+<a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/227" target="_blank" rel="noopener noreferrer">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/29" target="_blank" rel="noopener noreferrer">typed-protocols#29</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-04-28-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-27-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#detailed-log" class="table-of-contents__link toc-highlight">Detailed log</a><ul><li><a href="#ouroboros-network" class="table-of-contents__link toc-highlight">Ouroboros-Network</a></li><li><a href="#io-sim" class="table-of-contents__link toc-highlight">IO-Sim</a></li><li><a href="#typed-protocols" class="table-of-contents__link toc-highlight">Typed Protocols</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-01T00:00:00.000Z" itemprop="datePublished">May 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1389" target="_blank" rel="noopener noreferrer">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1382" target="_blank" rel="noopener noreferrer">#1382</a></li><li>Using the cache in more places to reduce recourses usage
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1396" target="_blank" rel="noopener noreferrer">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1398" target="_blank" rel="noopener noreferrer">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-01-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-03-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-04-28-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.
+It seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this
+needs to be confirmed. We started a DoS mitigation handbook and updated our
+conceptual component diagram to guide the Genesis design. We engaged with the
+IOG researchers to work on the Limit on Patience attack vector, work in this
+area is still ongoing. We sketched a design to decouple the CPU load of the node
+from its responsiveness to the socket. Finally, we discussed with Networking our
+approach to lower the performance impact of the BlockFetch decision logic, and
+got green light from them.</p><p>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new
+repository</a>, splitting
+it from the <code>ouroboros-network</code> repository, and released version 0.6 of
+Consensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an
+explanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code
+comments that emphasize certain properties of the decisions the <code>BlockFetch</code>
+logic makes that are helping us confirm that Genesis does not require any
+changes to <code>BlockFetch</code>. We are waiting on input from our former system
+architect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>
+repository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a
+way to address the concern that the Limit on Patiente (LoP) attack vector duty
+cycle is indeed low, but it&#x27;s still non-trivial to ultimately conclude it&#x27;s
+sufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its
+responsiveness to the socket, since the LoP is a relatively tight timeout, and
+node performance bugs inducing seconds-worth of latency are unfortunately
+familiar phenomena.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/62" target="_blank" rel="noopener noreferrer">added an
+explanation</a> of
+a question that we had to explain many times about the exact behavior of the
+hardfork combinator forecast horizon.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-03-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-04-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-03-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,
+we created yet another local reproduction with the workbench&#x27;s <code>forge-stress</code> benchmark.  </p><p>Currently we&#x27;re working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and
+subsequent releases.  </p><p>Additionally, we&#x27;ve refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally
+intended to run on a performance-critical codepath. We&#x27;ve worked on improving those, as well as eliminating cases of redundant
+conversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dataflow-documentation">Dataflow documentation<a class="hash-link" href="#dataflow-documentation" title="Direct link to heading">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate
+further development, we&#x27;re creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="remove-redundant-plutus-flake-input">Remove redundant Plutus flake input<a class="hash-link" href="#remove-redundant-plutus-flake-input" title="Direct link to heading">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,
+we simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.
+This capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along
+with various quality-of-life improvements, has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-03-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-03-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-01-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#dataflow-documentation" class="table-of-contents__link toc-highlight">Dataflow documentation</a></li><li><a href="#remove-redundant-plutus-flake-input" class="table-of-contents__link toc-highlight">Remove redundant Plutus flake input</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/870" target="_blank" rel="noopener noreferrer">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/852" target="_blank" rel="noopener noreferrer">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/871" target="_blank" rel="noopener noreferrer">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/853" target="_blank" rel="noopener noreferrer">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href="https://github.com/input-output-hk/mithril/issues/868" target="_blank" rel="noopener noreferrer">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href="https://github.com/input-output-hk/mithril/issues/878" target="_blank" rel="noopener noreferrer">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/643" target="_blank" rel="noopener noreferrer">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href="https://github.com/input-output-hk/mithril/issues/881" target="_blank" rel="noopener noreferrer">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href="https://github.com/input-output-hk/mithril/issues/873" target="_blank" rel="noopener noreferrer">#873</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-04-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-05-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.
+For conway, we completed a large structural change that now allows
+for delegation certificates to be parameterized by era, and introducing
+new certificates for the first time since Shelley.
+We also continue to build out our contraint based generators that we will
+use to property test the conway era.
+In particular, we can now generate an entire ledger state and a
+transaction which is balanced with respect to the ledger state.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="conway-certificates">Conway certificates<a class="hash-link" href="#conway-certificates" title="Direct link to heading">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.
+Moreover, there are new certificates in the Conway era to support CIP-1694,
+and MIR certificates have been removed.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3387" target="_blank" rel="noopener noreferrer">pull-3387</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,
+but instead generate ledger states and transactions based on constraints.
+We hit a milestone this week, namely the ability to generate a balanced transaction in the context
+of a ledger state, all based on our ever growing constaint language.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3386" target="_blank" rel="noopener noreferrer">pull-3386</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3393" target="_blank" rel="noopener noreferrer">pull-3393</a> - Performance improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3395" target="_blank" rel="noopener noreferrer">pull-3395</a> - Conway instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3398" target="_blank" rel="noopener noreferrer">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3389" target="_blank" rel="noopener noreferrer">pull-3389</a> - Reduce github pages size</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3390" target="_blank" rel="noopener noreferrer">pull-3390</a> - Reinstate the tickf optimizations</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-05-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-12-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-05-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a></li><li><a href="#conway-certificates" class="table-of-contents__link toc-highlight">Conway certificates</a></li><li><a href="#constraint-based-testing" class="table-of-contents__link toc-highlight">Constraint based testing</a></li><li><a href="#integration-work" class="table-of-contents__link toc-highlight">Integration work</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-05-05 - 2023-05-23</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5181" target="_blank" rel="noopener noreferrer">Update libsodium installation instructions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5264" target="_blank" rel="noopener noreferrer">Delete deprecated <code>shelley</code> command group</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5206" target="_blank" rel="noopener noreferrer">Add golden tests for CLI help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5201" target="_blank" rel="noopener noreferrer">Avoid bare IO in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5200" target="_blank" rel="noopener noreferrer">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5198" target="_blank" rel="noopener noreferrer">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5189" target="_blank" rel="noopener noreferrer">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5184" target="_blank" rel="noopener noreferrer">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5120" target="_blank" rel="noopener noreferrer">Simplify socket path code</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5221" target="_blank" rel="noopener noreferrer">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5218" target="_blank" rel="noopener noreferrer">Implement deposit handling when balancing transactions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5217" target="_blank" rel="noopener noreferrer">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5215" target="_blank" rel="noopener noreferrer">Cleanup socket file path code</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5207" target="_blank" rel="noopener noreferrer">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5194" target="_blank" rel="noopener noreferrer">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5191" target="_blank" rel="noopener noreferrer">Expose config reader</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5188" target="_blank" rel="noopener noreferrer">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5175" target="_blank" rel="noopener noreferrer">Fix <code>toEraInMode</code> for conway</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5168" target="_blank" rel="noopener noreferrer">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5096" target="_blank" rel="noopener noreferrer">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5047" target="_blank" rel="noopener noreferrer">Use cardano-api from separate repository</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4684" target="_blank" rel="noopener noreferrer">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5022" target="_blank" rel="noopener noreferrer">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5254" target="_blank" rel="noopener noreferrer">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5242" target="_blank" rel="noopener noreferrer">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5234" target="_blank" rel="noopener noreferrer">Fix cardano-testnet help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5211" target="_blank" rel="noopener noreferrer">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5165" target="_blank" rel="noopener noreferrer">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5128" target="_blank" rel="noopener noreferrer">Create defaultYamlValue for cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-05-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-05-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-04-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream&#x27;s macros to merge these curves in halo2curves.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href="https://github.com/input-output-hk/cardano-base/pull/408" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href="https://github.com/input-output-hk/cardano-base/pull/405" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href="https://github.com/privacy-scaling-explorations/halo2curves/pull/38" target="_blank" rel="noopener noreferrer">#38</a></li><li>Addition constraint over JubJub merged <a href="https://github.com/input-output-hk/sidechains-zk/pull/10" target="_blank" rel="noopener noreferrer">#10</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-17-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-12-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023
+(<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon
+on 19th June 2023. The papers will be published in EPTCS.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-12-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-12-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release
+of the first mainnet compatible version. Besides this they also addressed
+inconsistencies in rollback handling, added an architecture page to the website,
+reducing the size of logs using event IDs. They also had productive discussions
+with researchers on plans for incremental commits/decommits and had a whiteboard
+session on DeFi and lending protocols. The goals for next week include
+completing the validation of the timed transactions feature, exploring stateless
+observation, refining the Hydra explorer ticket, writing ops instructions and
+troubleshooting, and implementing the first end-to-end journey for external
+commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released first mainnnet compatible version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Added <a href="https://hydra.family/head-protocol/core-concepts/architecture/" target="_blank" rel="noopener noreferrer">architecture page</a> and fixed haddock links on our website <a href="https://github.com/input-output-hk/hydra/pull/838" target="_blank" rel="noopener noreferrer">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href="https://github.com/input-output-hk/hydra/pull/859" target="_blank" rel="noopener noreferrer">#859</a></li><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-04" target="_blank" rel="noopener noreferrer">monthly report for April</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-12-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-12-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see
+below).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to
+Handshake contributed by Galois Inc.  We made improvements to our tests (fixed
+a flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and
+<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of
+releasing new package version to <code>CHaP</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers
+(currently operated by IOG, in future also CF and Emurgo).  We designed
+a switch to use ledger peers if the node tip is close enough to the current
+time.  For more details see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query
+server&#x27;s <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to
+Galois Inc. for implementing it, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4256" target="_blank" rel="noopener noreferrer">#4256</a> and <a href="https://github.com/input-output-hk/ouroboros-network/issues/4538" target="_blank" rel="noopener noreferrer">#4538</a>.  We published new version
+of packages to CHaP <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/253" target="_blank" rel="noopener noreferrer">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will
+not duplicate diffusion errors messages in the log, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4515" target="_blank" rel="noopener noreferrer">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4540" target="_blank" rel="noopener noreferrer">#4540</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4544" target="_blank" rel="noopener noreferrer">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we
+released all the package necessary to build the newest set of packages,
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn&#x27;t log
+<code>ExitSuccess</code> exceptions, <a href="https://github.com/input-output-hk/ouroboros-consensus/pulls/71" target="_blank" rel="noopener noreferrer">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4395" target="_blank" rel="noopener noreferrer">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">#4539</a>: we don&#x27;t need to install cryptographic libraries in CI;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4545" target="_blank" rel="noopener noreferrer">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved
+to a new repo;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4546" target="_blank" rel="noopener noreferrer">#4546</a>: we switched to use <a href="https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue" target="_blank" rel="noopener noreferrer">GitHub merge queues</a>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-12-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-05-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#detailed-summary" class="table-of-contents__link toc-highlight">Detailed summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/89" target="_blank" rel="noopener noreferrer">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it&#x27;s similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we&#x27;ve re-introduced the Genesis State Machine.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-19-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-17-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2318.0" target="_blank" rel="noopener noreferrer"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href="https://github.com/input-output-hk/mithril/issues/907" target="_blank" rel="noopener noreferrer">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href="https://github.com/input-output-hk/mithril/issues/869" target="_blank" rel="noopener noreferrer">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href="https://github.com/input-output-hk/mithril/issues/888" target="_blank" rel="noopener noreferrer">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href="https://github.com/input-output-hk/mithril/issues/893" target="_blank" rel="noopener noreferrer">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href="https://github.com/input-output-hk/mithril/issues/919" target="_blank" rel="noopener noreferrer">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-17-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-17-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we&#x27;re porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we&#x27;re busy with the handover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>&#x27;s default build environment is around the corner, we&#x27;re setting up our benchmarking cluster to
+handle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This
+also involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we&#x27;ve been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,
+we strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to
+be balanced against resource demand for all our cluster&#x27;s nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>For our new tracing system, we&#x27;re currently validating the behaviour of the system after optimizations have been applied. Furthermore, some
+quality-of-life details that have changed required us to revision the system documentation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis">Analysis<a class="hash-link" href="#analysis" title="Direct link to heading">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been
+normally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a
+huge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking
+copmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we&#x27;ve been adjusting
+those profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality
+of the nomad cloud backend.  </p><p>Additionally, we&#x27;re porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance--tracing-meetup">Performance &amp; Tracing Meetup<a class="hash-link" href="#performance--tracing-meetup" title="Direct link to heading">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive
+days together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.
+Also, it was a great opportunity to finally meet in person.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offboarding">Offboarding<a class="hash-link" href="#offboarding" title="Direct link to heading">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he&#x27;s handing over all his obligations, which requires reorganisation
+of team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-17-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-12-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#analysis" class="table-of-contents__link toc-highlight">Analysis</a></li><li><a href="#open-sourcing" class="table-of-contents__link toc-highlight">Open Sourcing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li><li><a href="#performance--tracing-meetup" class="table-of-contents__link toc-highlight">Performance &amp; Tracing Meetup</a></li><li><a href="#offboarding" class="table-of-contents__link toc-highlight">Offboarding</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-19T00:00:00.000Z" itemprop="datePublished">May 19, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the &quot;Coding Standards&quot; for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href="https://github.com/input-output-hk/hydra/pull/863" target="_blank" rel="noopener noreferrer">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href="https://github.com/input-output-hk/hydra/pull/877" target="_blank" rel="noopener noreferrer">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href="https://github.com/input-output-hk/hydra/pull/867" target="_blank" rel="noopener noreferrer">#867</a>.</li><li>Updated our <a href="https://github.com/input-output-hk/hydra/wiki/Coding-Standards" target="_blank" rel="noopener noreferrer">Coding Standards</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing &quot;Option A&quot; <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Integrate spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-19-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-24-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-24T00:00:00.000Z" itemprop="datePublished">May 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-05-24 - 2023-06-06</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href="https://github.com/input-output-hk/fusion-flamingo" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5290" target="_blank" rel="noopener noreferrer">Update <code>cardano-cli</code> changelog</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5197" target="_blank" rel="noopener noreferrer">Propagate protocol parameters conversion errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5149" target="_blank" rel="noopener noreferrer">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/31" target="_blank" rel="noopener noreferrer">Switch to <code>tasty-discover</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/30" target="_blank" rel="noopener noreferrer">Move tests to standard locations</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/26" target="_blank" rel="noopener noreferrer">Make cardano-api:internal component public</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/24" target="_blank" rel="noopener noreferrer">update chaps index</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/18" target="_blank" rel="noopener noreferrer">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/17" target="_blank" rel="noopener noreferrer">Expose toAlonzoCostModels</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/9" target="_blank" rel="noopener noreferrer">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/32" target="_blank" rel="noopener noreferrer">Check changelog in tag script</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/34" target="_blank" rel="noopener noreferrer">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/38" target="_blank" rel="noopener noreferrer">Use .x suffix for release branches</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5291" target="_blank" rel="noopener noreferrer">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5284" target="_blank" rel="noopener noreferrer">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5243" target="_blank" rel="noopener noreferrer">update chaps &amp; integration</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5240" target="_blank" rel="noopener noreferrer">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-24-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-26-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-19-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-31-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-26-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their
+monthly review meeting and drafted the report for May. They made progress on
+implementing the first end-to-end journey for external commits using &quot;Option A&quot;
+for normal UTxOs, while still considering &quot;Option B&quot;. The team also integrated a
+Spanish translation contributed by the community, created micro-benchmarks for
+transaction validation and deserialization, and made improvements to
+hydra-node&#x27;s version reporting. Last but not least, they implemented the ability
+to commit multiple UTxOs to a head at once.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting (<a href="https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view" target="_blank" rel="noopener noreferrer">recording</a> + <a href="https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA" target="_blank" rel="noopener noreferrer">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->
+for normal UTxOs <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href="https://github.com/input-output-hk/hydra/pull/884" target="_blank" rel="noopener noreferrer">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href="https://github.com/input-output-hk/hydra/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete external commits with script UTxOs <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-26-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-26-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation
+of the new certificates is near complete, we refactored some of our data structures
+to be able to support DReps, we cleaned up the serialization format, and renamed things to make
+clearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.
+And, as always, we continue to address technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3408" target="_blank" rel="noopener noreferrer">pull-3408</a> - Improve conway delegation certificates</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3428" target="_blank" rel="noopener noreferrer">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3426" target="_blank" rel="noopener noreferrer">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3425" target="_blank" rel="noopener noreferrer">pull-3425</a> - Improve witness logic needed for conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3423" target="_blank" rel="noopener noreferrer">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3421" target="_blank" rel="noopener noreferrer">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3454" target="_blank" rel="noopener noreferrer">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improve-testing">Improve testing<a class="hash-link" href="#improve-testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3403" target="_blank" rel="noopener noreferrer">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3410" target="_blank" rel="noopener noreferrer">pull-3410</a> - Update chaps index</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3416" target="_blank" rel="noopener noreferrer">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3414" target="_blank" rel="noopener noreferrer">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3420" target="_blank" rel="noopener noreferrer">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3441" target="_blank" rel="noopener noreferrer">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3409" target="_blank" rel="noopener noreferrer">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3407" target="_blank" rel="noopener noreferrer">pull-3407</a> -  Fixup release process documentation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3404" target="_blank" rel="noopener noreferrer">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3402" target="_blank" rel="noopener noreferrer">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3424" target="_blank" rel="noopener noreferrer">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3432" target="_blank" rel="noopener noreferrer">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3440" target="_blank" rel="noopener noreferrer">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-26-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-26-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-progress" class="table-of-contents__link toc-highlight">Conway progress</a></li><li><a href="#improve-testing" class="table-of-contents__link toc-highlight">Improve testing</a></li><li><a href="#integration-work" class="table-of-contents__link toc-highlight">Integration work</a></li><li><a href="#technical-debt" class="table-of-contents__link toc-highlight">Technical debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug
+when using DNS names in local root peers.  We continued working on engineering
+blog post about P2P. We released a new version of packages for
+<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks
+if <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><ul><li>Eclipse evasion: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a></li><li>Local root peers bug fix: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">#4559</a></li><li>Release to CHaP: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li><li>CI improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">#4572</a></li><li>Release script improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-26-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-24-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#detailed-summary" class="table-of-contents__link toc-highlight">Detailed summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network&#x27;s ledger-peer selection (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101" target="_blank" rel="noopener noreferrer">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-31-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-01-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-31-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We&#x27;ve discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build
+configuration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive
+to benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile
+we&#x27;d expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way
+shorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great
+support when evaluating different compiler versions or RTS flags incrementally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various
+logging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to
+directly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;re currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with
+job definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing
+benchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible
+and offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate
+very specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-31-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-05-31-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-26-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href="https://github.com/input-output-hk/mithril/issues/925" target="_blank" rel="noopener noreferrer">#925</a></li><li>Completed the issue <code>Create the sub-command for &#x27;Cardano Immutable Files Full&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/895" target="_blank" rel="noopener noreferrer">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/933" target="_blank" rel="noopener noreferrer">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/892" target="_blank" rel="noopener noreferrer">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href="https://github.com/input-output-hk/mithril/issues/512" target="_blank" rel="noopener noreferrer">#512</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-01-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-02-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-05-31-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-02T00:00:00.000Z" itemprop="datePublished">June 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many
+different problems, such as our broken head on mainnet
+<a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>, our fragile monthly
+report publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for
+external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.
+Although most of these items are still open, huge progress has been made. To
+accelerate the investigation, they improved their logging to give more precise
+errors when a transition requirement fails, and to reduce duplication on effets
+logged content. Last but not least, the team is exploring formal methods and
+attended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href="https://github.com/input-output-hk/hydra/pull/895" target="_blank" rel="noopener noreferrer">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href="https://github.com/input-output-hk/hydra/pull/896" target="_blank" rel="noopener noreferrer">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href="https://github.com/input-output-hk/hydra/pull/893" target="_blank" rel="noopener noreferrer">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-02-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-07-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-01-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-07T00:00:00.000Z" itemprop="datePublished">June 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-06-07 - 2023-06-20</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5316" target="_blank" rel="noopener noreferrer">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">Updated cardano-cli ping command</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/28" target="_blank" rel="noopener noreferrer">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/25" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/24" target="_blank" rel="noopener noreferrer">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/20" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/59" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/58" target="_blank" rel="noopener noreferrer">New <code>requireShelleyBasedEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/57" target="_blank" rel="noopener noreferrer">New version cardano-api-8.5.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/56" target="_blank" rel="noopener noreferrer">New <code>queryEpoch</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/55" target="_blank" rel="noopener noreferrer">New version 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/54" target="_blank" rel="noopener noreferrer">Error on <code>hlint</code> warnings in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/53" target="_blank" rel="noopener noreferrer">Additional query expression functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/52" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/49" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/48" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/47" target="_blank" rel="noopener noreferrer">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/46" target="_blank" rel="noopener noreferrer">Revert to use <code>testProperty</code> now that it isn&#x27;t deprecated anymore</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1" target="_blank" rel="noopener noreferrer">cardano-node 8.1.1 release</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5340" target="_blank" rel="noopener noreferrer">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5339" target="_blank" rel="noopener noreferrer">Move golden files to proper location</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5336" target="_blank" rel="noopener noreferrer">Conway testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5335" target="_blank" rel="noopener noreferrer">Don&#x27;t retry testnet when failed</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5321" target="_blank" rel="noopener noreferrer">Remove YAML filepath record from data Conf</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5309" target="_blank" rel="noopener noreferrer">Remove duplicate --testnet-magic flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5307" target="_blank" rel="noopener noreferrer">Restructure cardano testnet </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that
+the consensus team is working on
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/88" target="_blank" rel="noopener noreferrer">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1416" target="_blank" rel="noopener noreferrer">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1419" target="_blank" rel="noopener noreferrer">#1419</a></li><li>Fixed issue with ada_pots being wrong
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href="https://github.com/input-output-hk/cardano-db-sync/releases" target="_blank" rel="noopener noreferrer"><code>13.1.1.2</code></a>
+which is tested and ready to release. It contains many of the above.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-09-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-08-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on giving and preparing public
+talks, also on preparing final versions of their ICE 2023 papers, and
+on analysing chain selection.</p><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:
+<a href="https://www.lambdadays.org/lambdadays2023" target="_blank" rel="noopener noreferrer">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:
+<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-08-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-08-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href="https://github.com/input-output-hk/bitte/pull/194" target="_blank" rel="noopener noreferrer">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href="https://github.com/input-output-hk/bitte/pull/201" target="_blank" rel="noopener noreferrer">bitte-pull-201</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-cells">Bitte-cells<a class="hash-link" href="#bitte-cells" title="Direct link to heading">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href="https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex" target="_blank" rel="noopener noreferrer">bitte-cells-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-graphql">Cardano-graphql<a class="hash-link" href="#cardano-graphql" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href="https://github.com/input-output-hk/cardano-graphql/pull/815" target="_blank" rel="noopener noreferrer">cardano-graphql-pull-815</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href="https://github.com/input-output-hk/cardano-node/pull/5241" target="_blank" rel="noopener noreferrer">cardano-node-pull-5241</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href="https://github.com/input-output-hk/cardano-ops/pull/411" target="_blank" rel="noopener noreferrer">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/compare/master...ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href="https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href="https://github.com/input-output-hk/cardano-world/pull/68" target="_blank" rel="noopener noreferrer">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href="https://github.com/input-output-hk/cardano-world/pull/69" target="_blank" rel="noopener noreferrer">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/75" target="_blank" rel="noopener noreferrer">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href="https://github.com/input-output-hk/cardano-world/pull/77" target="_blank" rel="noopener noreferrer">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href="https://github.com/input-output-hk/cardano-world/pull/79" target="_blank" rel="noopener noreferrer">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/84" target="_blank" rel="noopener noreferrer">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href="https://github.com/input-output-hk/cardano-world/pull/87" target="_blank" rel="noopener noreferrer">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href="https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href="https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href="https://github.com/input-output-hk/cardano-world/pull/92" target="_blank" rel="noopener noreferrer">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/cardano-world/pull/93" target="_blank" rel="noopener noreferrer">cardano-world-pr-93</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href="https://github.com/input-output-hk/ci-ops/pull/108" target="_blank" rel="noopener noreferrer">ci-ops-pull-108</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href="https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f" target="_blank" rel="noopener noreferrer">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/22" target="_blank" rel="noopener noreferrer">ci-world-pull-22</a></li><li>Migrate patroni HA db to it&#x27;s own namespace in ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/24" target="_blank" rel="noopener noreferrer">ci-world-pull-24</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href="https://github.com/input-output-hk/cicero/pull/79" target="_blank" rel="noopener noreferrer">cicero-pull-79</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href="https://github.com/input-output-hk/iohk-nix/pull/534" target="_blank" rel="noopener noreferrer">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/iohk-nix/pull/544" target="_blank" rel="noopener noreferrer">iohk-nix-pull-544</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">Openziti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href="https://github.com/johnalotoski/openziti-bins/pull/1" target="_blank" rel="noopener 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">System Test Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html" target="_blank" rel="noopener noreferrer">1.35.7</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html" target="_blank" rel="noopener noreferrer">8.0.0</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-system-test.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-08-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-07-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows&#x27; localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc" target="_blank" rel="noopener noreferrer">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue" target="_blank" rel="noopener noreferrer">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-12-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-09-developer-experience"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Developer Experience Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#cardano-base" class="table-of-contents__link toc-highlight">cardano-base</a></li><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Developer Experience Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We&#x27;ve also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href="https://github.com/input-output-hk/cardano-base" target="_blank" rel="noopener noreferrer">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we&#x27;re prioritizing compaining even stronger for better backwards compatibility.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="chap-cardano-haskell-packages">CHaP (cardano-haskell-packages)<a class="hash-link" href="#chap-cardano-haskell-packages" title="Direct link to heading">​</a></h3><p>We relocated the underlying tooling, (<a href="https://github.com/input-output-hk/foliage" target="_blank" rel="noopener noreferrer">foliage</a>), for <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/260" target="_blank" rel="noopener noreferrer">improved tooling to quickly add constraints to packages</a>, <a href="https://github.com/input-output-hk/cardano-haskell-packages/issues/285" target="_blank" rel="noopener noreferrer">better error reporting for add-revision</a> and <a href="https://github.com/input-output-hk/foliage/pull/63" target="_blank" rel="noopener noreferrer">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="github-actions">GitHub Actions<a class="hash-link" href="#github-actions" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/iohk-nix" target="_blank" rel="noopener noreferrer">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The relatively new <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository&#x27;s readme has been updated to reflect its purpose and usage guidelines.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-developer-experience.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-09-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-09-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#build-support--maintainance" class="table-of-contents__link toc-highlight">build support &amp; maintainance</a></li><li><a href="#compiler-upgrades" class="table-of-contents__link toc-highlight">compiler upgrades</a></li><li><a href="#chap-cardano-haskell-packages" class="table-of-contents__link toc-highlight">CHaP (cardano-haskell-packages)</a></li><li><a href="#github-actions" class="table-of-contents__link toc-highlight">GitHub Actions</a></li><li><a href="#iohk-nix" class="table-of-contents__link toc-highlight">iohk-nix</a></li><li><a href="#haskellnix" class="table-of-contents__link toc-highlight">haskell.nix</a></li><li><a href="#devx" class="table-of-contents__link toc-highlight">devx</a></li><li><a href="#upstream-tooling" class="table-of-contents__link toc-highlight">upstream tooling</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the
+investigation about the broken head on mainnet and re-opened their persistent
+head instance. The team also fixed the monthly report publication on their
+website and started sketching ideas and further improvements. Also, they are on
+the last mile to deliver a new feature which will allow parties to commit funds
+from extern wallets. Finally the team started to work on optimizing the
+performance on their benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a></li><li>Fix monthly report publication on docs website and published the <a href="https://hydra.family/head-protocol/monthly/2023-05" target="_blank" rel="noopener noreferrer">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href="https://github.com/input-output-hk/hydra/issues/908" target="_blank" rel="noopener noreferrer">#908</a></li><li>Open issue to docusaurus <a href="https://github.com/facebook/docusaurus/issues/9036" target="_blank" rel="noopener noreferrer">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href="https://github.com/input-output-hk/hydra/pull/910" target="_blank" rel="noopener noreferrer">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a
+bottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide
+regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li><li>Add hydra as tool to developer platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-09-developer-experience"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Developer Experience Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-08-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-12T00:00:00.000Z" itemprop="datePublished">June 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions-and-advances">Key contributions and advances<a class="hash-link" href="#key-contributions-and-advances" title="Direct link to heading">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers
+into outbound governor known peers.  This is the primary way for new
+unregistered nodes to enter the network, which then can be shared using peer
+sharing.  Note that peer sharing is an experimental feature which is disabled
+until genesis &amp; eclipse evasion as fully implemented. See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots
+where ignored until the first domain name was resolved, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4583" target="_blank" rel="noopener noreferrer">#4583</a>.  The bug
+fix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">#140</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-cardano-ping--cardano-cli-ping-release">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class="hash-link" href="#new-cardano-ping--cardano-cli-ping-release" title="Direct link to heading">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new
+query feature (query supported versions). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">#4589</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">#4593</a> and <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>.
+The new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted
+timestamps; also the formatting of ping results is slightly improved, and it
+will introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site
+supports the query parameter, the command will print:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.064</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.045</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which
+allows us to detect whether the remote side is an <code>InitiatorOnly</code> or
+<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce
+itself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-contributions">Other smaller contributions<a class="hash-link" href="#other-smaller-contributions" title="Direct link to heading">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,
+which are now available <a href="https://input-output-hk.github.io/typed-protocols/" target="_blank" rel="noopener noreferrer">here</a> (<a href="https://github.com/input-output-hk/typed-protocols/pull/40" target="_blank" rel="noopener noreferrer">#40</a>, <a href="https://github.com/input-output-hk/typed-protocols/pull/41" target="_blank" rel="noopener noreferrer">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in
+package description file, <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new
+<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.
+The PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4580" target="_blank" rel="noopener noreferrer">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-12-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-14-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-09-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-update" class="table-of-contents__link toc-highlight">Network Update</a><ul><li><a href="#key-contributions-and-advances" class="table-of-contents__link toc-highlight">Key contributions and advances</a></li><li><a href="#other-smaller-contributions" class="table-of-contents__link toc-highlight">Other smaller contributions</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.
+There is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated &quot;Limit on Patience&quot; timeout sufficiently bounds how long the adversary can inflate a victim&#x27;s overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.
+We managed to run a node again with UTxO-HD enabled.
+We also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-14-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-15-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-14-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We&#x27;ve performed the first full runs on the new backend.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we&#x27;ve measured
+performance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts
+done on several system components.  </p><p>In the meantime, we&#x27;ve finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for
+benchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be
+meaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific
+trace messages are closely aligned. We&#x27;ve found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we&#x27;ve had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As the new backend&#x27;s healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we&#x27;ve performed our first 52-node cluster runs on nomad cloud. We&#x27;re currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new
+infrastructure to the existing ones, including determining reproducibility and variance.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-14-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-14-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-12-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for &#x27;Mithril Stake Distribution&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/896" target="_blank" rel="noopener noreferrer">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/960" target="_blank" rel="noopener noreferrer">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the &#x27;mainnet&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/962" target="_blank" rel="noopener noreferrer">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and  &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href="https://github.com/input-output-hk/mithril/issues/953" target="_blank" rel="noopener noreferrer">#953</a></li><li>Completed the issue <code>CI tests fail with Rust &#x27;1.70.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/958" target="_blank" rel="noopener noreferrer">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Worked on the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Fix &#x27;Mithril Client multi-platform test&#x27; with new client interface</code> <a href="https://github.com/input-output-hk/mithril/issues/956" target="_blank" rel="noopener noreferrer">#956</a></li><li>Completed the issue <code>Enhance &#x27;ImmutableDigesterError::NotEnoughImmutable&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/969" target="_blank" rel="noopener noreferrer">#969</a></li><li>Completed the issue <code>Client &#x27;snapshot download&#x27; command fails with option &#x27;--download-dir&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/979" target="_blank" rel="noopener noreferrer">#979</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-15-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-16-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-14-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-16T00:00:00.000Z" itemprop="datePublished">June 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and
+experiment operating a head on mainnet. They collected several bugs and issues
+and worked on fixing them. Now the team is soon to release a new version,
+0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li><li>Solved one user issue <a href="https://github.com/input-output-hk/hydra/issues/914" target="_blank" rel="noopener noreferrer">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href="https://github.com/input-output-hk/hydra/pull/928" target="_blank" rel="noopener noreferrer">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-16-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-23-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-15-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-28-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-23-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/pgrange.png" alt="Pascal Grange"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Pascal Grange</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review
+meeting (monthly report and video recording available soon) and started
+experimenting on preview network with the new commit from external wallet
+feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">commit from external
+wallet</a></li><li>Published regular <a href="https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks" target="_blank" rel="noopener noreferrer">benchmarks for
+Hydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs
+<a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full
+transactions <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a> -&gt; this
+is now evolved into fully addressing <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet
+<a href="https://github.com/input-output-hk/hydra/pull/924" target="_blank" rel="noopener noreferrer">#924</a></li><li>Add flag option to display node version on tui
+<a href="https://github.com/input-output-hk/hydra/pull/934" target="_blank" rel="noopener noreferrer">#934</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-23-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-23-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions">Key contributions<a class="hash-link" href="#key-contributions" title="Direct link to heading">​</a></h3><p>We held a series of session to review the implementation of big ledger peers
+(eclipse evasion). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec
+and protocol implementation.  We worked out a nice solution which takes
+advantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we
+provide <code>Any</code> type which gen generate almost any CBOR term (some are excluded
+only because they are not decoded back to the same form, and we relay on that
+property).  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has
+a limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is
+ignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that
+the format of messages has changed, timestamps are printed in ISO8601 format.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">#4601</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">#5326</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers
+when the chain is close to the tip, we continued to work on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.  This is
+currently in review, the consensus team will need to provide us with the new
+api.  This feature is useful for two reasons: makes it easier to maintain
+a topology file, it will also limit the traffic on public roots generated by
+for example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design
+&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-changes">Other smaller changes<a class="hash-link" href="#other-smaller-changes" title="Direct link to heading">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger
+peers DNS names are resolved concurrently, and at most 2 local root peer DNS
+names. See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">#4596</a>.</p><p>We fixed handshake query timeout in <a href="https://github.com/input-output-hk/ouroboros-network/pull/4603" target="_blank" rel="noopener noreferrer">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the
+consensus team, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">#4608</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-23-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-23-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-update" class="table-of-contents__link toc-highlight">Network Update</a><ul><li><a href="#key-contributions" class="table-of-contents__link toc-highlight">Key contributions</a></li><li><a href="#other-smaller-changes" class="table-of-contents__link toc-highlight">Other smaller changes</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href="https://github.com/input-output-hk/cardano-node/pull/5318" target="_blank" rel="noopener noreferrer">cardano-node-pull-5318</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href="https://github.com/input-output-hk/cardano-ops/pull/414" target="_blank" rel="noopener noreferrer">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/tree/ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-ops-local</a>, <a href="https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p" target="_blank" rel="noopener noreferrer">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/cardano-world/pull/96" target="_blank" rel="noopener noreferrer">cardano-world-pull-96</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href="https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9" target="_blank" rel="noopener noreferrer">ci-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href="https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250" target="_blank" rel="noopener noreferrer">ci-world-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx-ci">Devx-ci<a class="hash-link" href="#devx-ci" title="Direct link to heading">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href="https://github.com/input-output-hk/devx-ci" target="_blank" rel="noopener noreferrer">devx-ci-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/iohk-nix/pull/545" target="_blank" rel="noopener noreferrer">iohk-nix-pull-545</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722" target="_blank" rel="noopener noreferrer">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/149" target="_blank" rel="noopener noreferrer">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/87" target="_blank" rel="noopener noreferrer">added</a> a new &quot;legacy&quot; cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don&#x27;t involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-28-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-29-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-28-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We&#x27;ve looked into an issue where the tracing system&#x27;s concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9&#x27;s significantly different inlining behaviour may produce those effects. We&#x27;re currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The tracing system&#x27;s concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we&#x27;ve been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we&#x27;re continuing the new backend&#x27;s validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-28-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-28-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-23-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1018" target="_blank" rel="noopener noreferrer">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href="https://github.com/input-output-hk/mithril/issues/1017" target="_blank" rel="noopener noreferrer">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href="https://github.com/input-output-hk/mithril/issues/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href="https://github.com/input-output-hk/mithril/issues/1006" target="_blank" rel="noopener noreferrer">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Completed the issue <code>Add &#x27;recompute-certificates-hash&#x27; command to aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1001" target="_blank" rel="noopener noreferrer">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/984" target="_blank" rel="noopener noreferrer">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/944" target="_blank" rel="noopener noreferrer">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/978" target="_blank" rel="noopener noreferrer">#978</a></li><li>Completed the issue <code>Clean &#x27;pending_snapshot&#x27; directory of aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/983" target="_blank" rel="noopener noreferrer">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href="https://github.com/input-output-hk/mithril/issues/1000" target="_blank" rel="noopener noreferrer">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/982" target="_blank" rel="noopener noreferrer">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1010" target="_blank" rel="noopener noreferrer">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.1&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/973" target="_blank" rel="noopener noreferrer">#973</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-29-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-06-30-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-28-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-06-30T00:00:00.000Z" itemprop="datePublished">June 30, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,
+implemented the end-to-end functionality for external commits, and tested it on
+the preview environment. They also listed Hydra as a tool on the Cardano
+developer portal, providing more visibility for the project. The team clarified
+the path forward for L2 protocol improvements and explored an alternative CI
+approach using cabal instead of nix. Additionally, they released version 0.11.0,
+marking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Written and published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-06" target="_blank" rel="noopener noreferrer">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li><li>Listed Hydra as a tool on cardano <a href="https://developers.cardano.org/tools/" target="_blank" rel="noopener noreferrer">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Established an alternative CI using more cabal tools <a href="https://github.com/input-output-hk/hydra/pull/923" target="_blank" rel="noopener noreferrer">#923</a></li><li>Release version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.11.0</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Complete ReqSn only sends transaction ids <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-30-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-04-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-29-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1455" target="_blank" rel="noopener noreferrer">#1455</a>.</li><li>This also fixes a bug
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1451" target="_blank" rel="noopener noreferrer">#1451</a></li><li>Added new tests to the new tx_out options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency
+This fixes many other issues and simplifies the logic in db-sync
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1447" target="_blank" rel="noopener noreferrer">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1436" target="_blank" rel="noopener noreferrer">#1436</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1442" target="_blank" rel="noopener noreferrer">#1442</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1448" target="_blank" rel="noopener noreferrer">#1448</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1452" target="_blank" rel="noopener noreferrer">#1452</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-04-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-06-developer-experience"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Developer Experience Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-04-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-06-21 - 2023-07-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance &quot;Update constitution&quot; governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/60" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/44" target="_blank" rel="noopener noreferrer">Release 8.2.1</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/39" target="_blank" rel="noopener noreferrer">Use new function-based API instead of using query data types directly</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/94" target="_blank" rel="noopener noreferrer">Release cardano-api 8.7</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/92" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/90" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/88" target="_blank" rel="noopener noreferrer">Backport: Add era phantom type parameter to Certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/86" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/85" target="_blank" rel="noopener noreferrer">Voting procedure and proposal procedure updates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/84" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/83" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/77" target="_blank" rel="noopener noreferrer">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/70" target="_blank" rel="noopener noreferrer">Update CHaP index</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/41" target="_blank" rel="noopener noreferrer">CIP-1694 API - Part 1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node top level error handler</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5364" target="_blank" rel="noopener noreferrer">Report payment address and UTxOs in testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5362" target="_blank" rel="noopener noreferrer">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/33" target="_blank" rel="noopener noreferrer">Release workflow description</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/75" target="_blank" rel="noopener noreferrer">Add PR changelog check</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/71" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/62" target="_blank" rel="noopener noreferrer">Enable CI on PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/53" target="_blank" rel="noopener noreferrer">Remove merge_group trigger from changelog check CI</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/46" target="_blank" rel="noopener noreferrer">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/41" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/40" target="_blank" rel="noopener noreferrer">Enable CI in PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/48" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-04-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-04-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-06-30-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#cardano-cli" class="table-of-contents__link toc-highlight">cardano-cli</a></li><li><a href="#cardano-api" class="table-of-contents__link toc-highlight">cardano-api</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">cardano-node</a></li><li><a href="#cardano-testnet" class="table-of-contents__link toc-highlight">cardano-testnet</a></li><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; project maintenance</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Developer Experience Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-06T00:00:00.000Z" itemprop="datePublished">July 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We&#x27;ve also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="hydra-tools">Hydra Tools<a class="hash-link" href="#hydra-tools" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/hydra-tools" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-06-developer-experience.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-07-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-04-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#build-support--maintainance" class="table-of-contents__link toc-highlight">build support &amp; maintainance</a></li><li><a href="#compiler-upgrades" class="table-of-contents__link toc-highlight">compiler upgrades</a></li><li><a href="#hydra-tools" class="table-of-contents__link toc-highlight">Hydra Tools</a></li><li><a href="#haskellnix" class="table-of-contents__link toc-highlight">haskell.nix</a></li><li><a href="#devx" class="table-of-contents__link toc-highlight">devx</a></li><li><a href="#upstream-tooling" class="table-of-contents__link toc-highlight">upstream tooling</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes_agent">kes_agent<a class="hash-link" href="#kes_agent" title="Direct link to heading">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href="https://github.com/input-output-hk/kes-agent/issues/14" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Included benchmarks and further tests.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cips-and-community">CIPs and community<a class="hash-link" href="#cips-and-community" title="Direct link to heading">​</a></h3><ul><li>Addressed some review comments in <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#PR506</a></li><li>Worked with the communityt on <a href="https://github.com/cardano-foundation/CIPs/pull/524" target="_blank" rel="noopener noreferrer">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-12-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-07-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#kes_agent" class="table-of-contents__link toc-highlight">kes_agent</a></li><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li><li><a href="#cips-and-community" class="table-of-contents__link toc-highlight">CIPs and community</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers
+for publication in EPTCS, formalising concensus, and investigating chain
+sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-07-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-07-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the
+network layer further by implementing authentication of the messages between the
+peers in the Head protocol. In the process they also managed to separate
+HeartBeat messages from the protocol ones which somewhat improved the quality of
+code in Hydra. The team also finished work related to sending only transaction
+ids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark
+publishing on the website.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">Implemented</a> authenticated messages</li><li><a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href="https://github.com/input-output-hk/hydra/pull/969" target="_blank" rel="noopener noreferrer">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href="https://github.com/input-output-hk/hydra/pull/947" target="_blank" rel="noopener noreferrer">benchmarks</a></li><li><a href="https://github.com/input-output-hk/hydra/pull/967" target="_blank" rel="noopener noreferrer">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href="https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1" target="_blank" rel="noopener noreferrer">off-chain signature
+verification</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-07-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-07-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href="https://github.com/input-output-hk/cardano-node/pull/5360" target="_blank" rel="noopener noreferrer">cardano-node-pull-5360</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ogmios">Cardano-ogmios<a class="hash-link" href="#cardano-ogmios" title="Direct link to heading">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href="https://github.com/input-output-hk/cardano-ogmios/pull/6" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-6</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href="https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-rosetta">Cardano-rosetta<a class="hash-link" href="#cardano-rosetta" title="Direct link to heading">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href="https://github.com/cardano-foundation/cardano-rosetta/pull/532" target="_blank" rel="noopener noreferrer">cardano-rosetta-pull-532</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href="https://github.com/input-output-hk/cardano-world/pull/99" target="_blank" rel="noopener noreferrer">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href="https://github.com/input-output-hk/cardano-world/pull/100" target="_blank" rel="noopener noreferrer">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href="https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href="https://github.com/input-output-hk/cardano-world/pull/101" target="_blank" rel="noopener noreferrer">cardano-world-pull-101</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href="https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911" target="_blank" rel="noopener noreferrer">spongix-simple-branch</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/200" target="_blank" rel="noopener noreferrer">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-12-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-13-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-12-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-12-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-12-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-07-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li><li>Worked on the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/932" target="_blank" rel="noopener noreferrer">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1037" target="_blank" rel="noopener noreferrer">#1037</a></li><li>Completed the issue <code>Add &#x27;created_at&#x27; in Mithril Stake Distribution messages</code> <a href="https://github.com/input-output-hk/mithril/issues/1030" target="_blank" rel="noopener noreferrer">#1030</a></li><li>Completed the issue <code>Add a &#x27;run-only&#x27; option in end to end test</code> <a href="https://github.com/input-output-hk/mithril/issues/1048" target="_blank" rel="noopener noreferrer">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href="https://github.com/input-output-hk/mithril/issues/1058" target="_blank" rel="noopener noreferrer">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/874" target="_blank" rel="noopener noreferrer">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href="https://github.com/input-output-hk/mithril/issues/1040" target="_blank" rel="noopener noreferrer">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href="https://github.com/input-output-hk/mithril/issues/1041" target="_blank" rel="noopener noreferrer">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href="https://github.com/input-output-hk/mithril/issues/952" target="_blank" rel="noopener noreferrer">#952</a></li><li>Completed the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/837" target="_blank" rel="noopener noreferrer">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href="https://github.com/input-output-hk/mithril/issues/1035" target="_blank" rel="noopener noreferrer">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1023" target="_blank" rel="noopener noreferrer">#1023</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-13-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-14-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-12-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-14T00:00:00.000Z" itemprop="datePublished">July 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order
+to improve <code>hydra-node</code> performance. Because of this work the team noticed we
+need to refactor the emit snapshot emission logic and update the spec in the
+light of new changes. They also took the time to revisit their goals and product
+plans for the next quarter as well as doing some security fixes related to
+multisignatures.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/963" target="_blank" rel="noopener noreferrer">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4" target="_blank" rel="noopener noreferrer">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href="https://github.com/input-output-hk/hydra/pull/962" target="_blank" rel="noopener noreferrer">#962</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement Event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Remove deprecated internal commit <a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a> and close <a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-14-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-18-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-13-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-18T00:00:00.000Z" itemprop="datePublished">July 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-07-05 - 2023-07-18</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/74" target="_blank" rel="noopener noreferrer">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/72" target="_blank" rel="noopener noreferrer">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/68" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/67" target="_blank" rel="noopener noreferrer">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/66" target="_blank" rel="noopener noreferrer">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/65" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/123" target="_blank" rel="noopener noreferrer">Fix ghc version CPP</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/122" target="_blank" rel="noopener noreferrer">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/119" target="_blank" rel="noopener noreferrer">Incorporate remaining ledger certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/117" target="_blank" rel="noopener noreferrer">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/115" target="_blank" rel="noopener noreferrer">Fix Eq, Show for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/112" target="_blank" rel="noopener noreferrer">Wire up remaining governance actions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/108" target="_blank" rel="noopener noreferrer">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/106" target="_blank" rel="noopener noreferrer">Remove unnecessary constraint</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/104" target="_blank" rel="noopener noreferrer">Make it build with ghc-9.6</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/103" target="_blank" rel="noopener noreferrer">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/102" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/101" target="_blank" rel="noopener noreferrer">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/99" target="_blank" rel="noopener noreferrer">Update ledger and consensus</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/98" target="_blank" rel="noopener noreferrer">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5391" target="_blank" rel="noopener noreferrer">Fix Shutdown test for new exit codes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5387" target="_blank" rel="noopener noreferrer">Fix markdown links</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/69" target="_blank" rel="noopener noreferrer">Apply <code>stylish-haskell</code> to project</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-18-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-20T00:00:00.000Z" itemprop="datePublished">July 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on formalising mini protocols, the performance
+modelling prototype and also finishing off their ICE papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the
+thorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of
+mini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete
+backend based on piecewise-polynomials</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-20-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-21-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-18-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated the specification to align with recent
+off-chain protocol changes, completed refactoring the snapshot emission
+in preparation for event-sourced protocol logic, and updated to GHC
+9.2.7, resulting in improved compile times and slightly smaller Plutus
+scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol
+changes to complete
+<a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Refactored the snapshot emission logic in preparation for event
+sourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and
+slightly smaller plutus scripts.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence
+<a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Update the use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a></li><li>Remove deprecated internal commit
+<a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-26-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-21-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.
+All members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.
+We also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).
+Additionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.
+We also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-we-achieved">What we achieved<a class="hash-link" href="#what-we-achieved" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3521" target="_blank" rel="noopener noreferrer">pull-3521</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3554" target="_blank" rel="noopener noreferrer">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3520" target="_blank" rel="noopener noreferrer">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3531" target="_blank" rel="noopener noreferrer">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3558" target="_blank" rel="noopener noreferrer">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3550" target="_blank" rel="noopener noreferrer">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3551" target="_blank" rel="noopener noreferrer">pull-3551</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3546" target="_blank" rel="noopener noreferrer">pull-3546</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3472" target="_blank" rel="noopener noreferrer">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3146" target="_blank" rel="noopener noreferrer">issue-3146</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3498" target="_blank" rel="noopener noreferrer">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2948" target="_blank" rel="noopener noreferrer">issue-2948</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3499" target="_blank" rel="noopener noreferrer">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-currently-in-progress">What is currently in progress<a class="hash-link" href="#what-is-currently-in-progress" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3494" target="_blank" rel="noopener noreferrer">issue-3494</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3436" target="_blank" rel="noopener noreferrer">issue-3436</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3509" target="_blank" rel="noopener noreferrer">issue-3509</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3532" target="_blank" rel="noopener noreferrer">issue-3532</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a>] Add script-support for the constitution</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3543" target="_blank" rel="noopener noreferrer">issue-3543</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a>] Improve the &#x27;new committee&#x27; governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-21-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-21-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#what-we-achieved" class="table-of-contents__link toc-highlight">What we achieved</a></li><li><a href="#what-is-currently-in-progress" class="table-of-contents__link toc-highlight">What is currently in progress</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href="https://github.com/input-output-hk/cardano-node/pull/5406" target="_blank" rel="noopener noreferrer">cardano-node-pull-5406</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href="https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href="https://github.com/input-output-hk/cardano-world/pull/102" target="_blank" rel="noopener noreferrer">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/103" target="_blank" rel="noopener noreferrer">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href="https://github.com/input-output-hk/cardano-world/pull/91" target="_blank" rel="noopener noreferrer">cardano-world-pull-91</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/iohk-nix/pull/549" target="_blank" rel="noopener noreferrer">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href="https://github.com/input-output-hk/iohk-nix/pull/550" target="_blank" rel="noopener noreferrer">iohk-nix-pull-550</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-26T00:00:00.000Z" itemprop="datePublished">July 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.
+We also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.
+Currently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-liaising">Genesis liaising<a class="hash-link" href="#genesis-liaising" title="Direct link to heading">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/222" target="_blank" rel="noopener noreferrer">#222</a>.</li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/233" target="_blank" rel="noopener noreferrer">#233</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-26-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-27-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-21-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#genesis-liaising" class="table-of-contents__link toc-highlight">Genesis liaising</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href="https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide" target="_blank" rel="noopener noreferrer">onboarding SPOs</a> and setting up a <a href="https://mithril.network/doc/manual/getting-started/run-signer-node" target="_blank" rel="noopener noreferrer">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the dev blog post <a href="https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch" target="_blank" rel="noopener noreferrer">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Completed the issue <code>Add a &#x27;sign&#x27; sub-command to &#x27;genesis&#x27; command in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1081" target="_blank" rel="noopener noreferrer">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance &#x27;Run a Mithril Signer node (SPO)&#x27; guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1055" target="_blank" rel="noopener noreferrer">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href="https://github.com/input-output-hk/mithril/issues/1073" target="_blank" rel="noopener noreferrer">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href="https://github.com/input-output-hk/mithril/issues/834" target="_blank" rel="noopener noreferrer">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of &#x27;ProtocolVerificationKey&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1083" target="_blank" rel="noopener noreferrer">#1083</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-27-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-28-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-26-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-28T00:00:00.000Z" itemprop="datePublished">July 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.
+They conducted the monthly review meeting for July, which continously ensures
+transparent communication and project evaluation. The team migrated the core
+logic of the node to an event-sourced architecture and incremental writes of
+events to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.
+Furthermore, the team added the ability to read protocol parameters via the API
+and fixed the CI workflows to support pull requests from forks of external
+contributors, streamlining the development process for community involvement.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting for July (<a href="https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/" target="_blank" rel="noopener noreferrer">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href="https://github.com/input-output-hk/hydra/pull/999" target="_blank" rel="noopener noreferrer">#999</a></li><li>Updated persistence to faster incremental writes of events <a href="https://github.com/input-output-hk/hydra/pull/1000" target="_blank" rel="noopener noreferrer">#1000</a></li><li>Added ability to read protocol parameters via API <a href="https://github.com/input-output-hk/hydra/issues/735" target="_blank" rel="noopener noreferrer">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href="https://github.com/input-output-hk/hydra/pull/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Updated to GHC 9.2.8 <a href="https://github.com/input-output-hk/hydra/pull/1005" target="_blank" rel="noopener noreferrer">#1005</a></li><li>Prepared an updated use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a> (published with next release)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-28-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-07-31-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-27-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-07-31T00:00:00.000Z" itemprop="datePublished">July 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update-sprints-39--40">Network Update (Sprints 39 &amp; 40)<a class="hash-link" href="#network-update-sprints-39--40" title="Direct link to heading">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.
+It was great to see and talk to so many of the community members.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-39-jun-26---jul-09">Sprint 39 (Jun 26 - Jul 09)<a class="hash-link" href="#sprint-39-jun-26---jul-09" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes">Major changes<a class="hash-link" href="#major-changes" title="Direct link to heading">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-client-protocol"><code>node-to-client</code> protocol<a class="hash-link" href="#node-to-client-protocol" title="Direct link to heading">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-node-protocol"><code>node-to-node</code> protocol<a class="hash-link" href="#node-to-node-protocol" title="Direct link to heading">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.
+The <code>cardano-client-0.2.0.0</code> was not affected.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4612" target="_blank" rel="noopener noreferrer">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).
+Dynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.
+See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">ouroboros-network#4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="minor-changes">Minor changes<a class="hash-link" href="#minor-changes" title="Direct link to heading">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-40-jul-09---jul-23">Sprint 40 (Jul 09 - Jul 23)<a class="hash-link" href="#sprint-40-jul-09---jul-23" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes-1">Major changes<a class="hash-link" href="#major-changes-1" title="Direct link to heading">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).
+This includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.
+This feature is documented in the <a href="https://github.com/input-output-hk/cardano-node/pull/5399" target="_blank" rel="noopener noreferrer">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre" target="_blank" rel="noopener noreferrer">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.
+Peer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">ouroboros-network#4620</a>.
+The improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.
+Previously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.
+The hot valency (previously known simply as valency) hasn&#x27;t changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.
+Warm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">cardano-node#5409</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-31-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-01-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-07-28-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-update-sprints-39--40" class="table-of-contents__link toc-highlight">Network Update (Sprints 39 &amp; 40)</a><ul><li><a href="#sprint-39-jun-26---jul-09" class="table-of-contents__link toc-highlight">Sprint 39 (Jun 26 - Jul 09)</a></li><li><a href="#sprint-40-jul-09---jul-23" class="table-of-contents__link toc-highlight">Sprint 40 (Jul 09 - Jul 23)</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-01T00:00:00.000Z" itemprop="datePublished">August 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-07-19 - 2023-08-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/116" target="_blank" rel="noopener noreferrer">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/115" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/113" target="_blank" rel="noopener noreferrer">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/111" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/110" target="_blank" rel="noopener noreferrer">Add DRep registration certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/109" target="_blank" rel="noopener noreferrer">Add options to delegate voting stake </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/107" target="_blank" rel="noopener noreferrer">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/106" target="_blank" rel="noopener noreferrer">Release cardano-cli 8.4.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/103" target="_blank" rel="noopener noreferrer">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/100" target="_blank" rel="noopener noreferrer">Change directory structure from Options/.. to EraBased/..</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/98" target="_blank" rel="noopener noreferrer">Era-sensitive command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/90" target="_blank" rel="noopener noreferrer">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/155" target="_blank" rel="noopener noreferrer">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/154" target="_blank" rel="noopener noreferrer">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/152" target="_blank" rel="noopener noreferrer">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/151" target="_blank" rel="noopener noreferrer">Deprecate some constraint functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/150" target="_blank" rel="noopener noreferrer">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/149" target="_blank" rel="noopener noreferrer">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/148" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/147" target="_blank" rel="noopener noreferrer">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/146" target="_blank" rel="noopener noreferrer">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/143" target="_blank" rel="noopener noreferrer">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/142" target="_blank" rel="noopener noreferrer">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/141" target="_blank" rel="noopener noreferrer">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/138" target="_blank" rel="noopener noreferrer">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/137" target="_blank" rel="noopener noreferrer">Support more constraints for Conway witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/135" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/134" target="_blank" rel="noopener noreferrer">Expose toShelleyPoolParams for conway integration</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/131" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/130" target="_blank" rel="noopener noreferrer">Expose more functionality from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/128" target="_blank" rel="noopener noreferrer">Improved feature ergonomics</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/127" target="_blank" rel="noopener noreferrer">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5412" target="_blank" rel="noopener noreferrer">Fix stubbed LogFormatting instances</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5401" target="_blank" rel="noopener noreferrer">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5400" target="_blank" rel="noopener noreferrer">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a><ul><li><a href="https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42" target="_blank" rel="noopener noreferrer">WarmValency</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-01-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Work on a mithril flaky test <a href="https://github.com/input-output-hk/mithril/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Keep working on Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Should be merged in the coming week.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Finalised the fuzz tests <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">#43</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-09-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is formalising mini protocols and also further developing the
+performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Developing new framework for specification and verification of
+mini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that
+allows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the
+project. The team updated the use case section for auctions on the <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a>
+branch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced
+persistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves
+off-chain transaction processing performance. They also added a
+<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community
+reviews for several catalyst proposals related to Hydra and Mithril,
+contributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a> branch)</li><li>Completed event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href="https://github.com/input-output-hk/hydra/pull/1006" target="_blank" rel="noopener noreferrer">#1006</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In
+particular, the main focus was directed towards solidifying transaction related types and
+their binary representation. We also directed some effort into unblocking Plutus team with
+respect to PlutusV3 integration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3581" target="_blank" rel="noopener noreferrer">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3571" target="_blank" rel="noopener noreferrer">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a> - Add Script to Constitution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3576" target="_blank" rel="noopener noreferrer">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3579" target="_blank" rel="noopener noreferrer">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3585" target="_blank" rel="noopener noreferrer">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3587" target="_blank" rel="noopener noreferrer">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3586" target="_blank" rel="noopener noreferrer">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3588" target="_blank" rel="noopener noreferrer">pull-3588</a> - Rename key roles</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3595" target="_blank" rel="noopener noreferrer">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3600" target="_blank" rel="noopener noreferrer">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3597" target="_blank" rel="noopener noreferrer">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a> - New features for generation subject to constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3519" target="_blank" rel="noopener noreferrer">pull-3519</a> - Basic Conway features test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugfixes">Bugfixes<a class="hash-link" href="#bugfixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3566" target="_blank" rel="noopener noreferrer">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-integration">Plutus integration<a class="hash-link" href="#plutus-integration" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3538" target="_blank" rel="noopener noreferrer">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3593" target="_blank" rel="noopener noreferrer">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3574" target="_blank" rel="noopener noreferrer">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3573" target="_blank" rel="noopener noreferrer">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3555" target="_blank" rel="noopener noreferrer">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3575" target="_blank" rel="noopener noreferrer">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3567" target="_blank" rel="noopener noreferrer">pull-3567</a> - Backport mint field translation bugfix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3568" target="_blank" rel="noopener noreferrer">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3572" target="_blank" rel="noopener noreferrer">pull-3572</a> - Release/backport tickf bugfix</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-progress" class="table-of-contents__link toc-highlight">Conway progress</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li><li><a href="#bugfixes" class="table-of-contents__link toc-highlight">Bugfixes</a></li><li><a href="#plutus-integration" class="table-of-contents__link toc-highlight">Plutus integration</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-41">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22" target="_blank" rel="noopener noreferrer">sprint 41</a><a class="hash-link" href="#high-level-overview-of-sprint-41" title="Direct link to heading">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed
+to provide a safety guarantee for nodes joining the network while still taking
+advantage of the distributed network for nodes that are synced.  This will be
+an intermediate step before Genesis which will allow for further distribute the
+system.  The bootstrap peers will be run by some trusted partners like CF,
+Emurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node
+wallets), which often end up syncing and require access to the honest chain. See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated
+thunks which can lead to memory leaks <a href="https://github.com/input-output-hk/ouroboros-network/issues/4633" target="_blank" rel="noopener noreferrer">ouroboros-network#4633</a>.  We found
+a small one in the peer metric component of the P2P networking stack.  Fixing
+it put us on a small detour of fixing the API of the <a href="https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars" target="_blank" rel="noopener noreferrer"><code>strict-checked-vars</code></a>
+package: <a href="https://github.com/input-output-hk/cardano-base/pulls/431" target="_blank" rel="noopener noreferrer">cardano-base#431</a>, <a href="https://github.com/input-output-hk/cardano-base/pulls/432" target="_blank" rel="noopener noreferrer">cardano-base#432</a>, as well as adding <code>NFData</code>
+instance to <a href="https://github.com/input-output-hk/io-sim/pull/110" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>.  We also improved <code>nothunks</code>
+library to make debugging easier and we provided a <code>NoThunks</code> instance for
+<code>ThreadId</code> which we will need in the future (see <a href="https://github.com/input-output-hk/nothunks/pull/33" target="_blank" rel="noopener noreferrer">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related
+packages to <a href="https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0" target="_blank" rel="noopener noreferrer">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big
+ledger peers, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it&#x27;s not possible to
+shutdown a node which was starting while trying to update network topology,
+see <a href="https://github.com/input-output-hk/cardano-node/pull/5421" target="_blank" rel="noopener noreferrer">cardano-node#5421</a>.</p><p>I didn&#x27;t mention that in the previous update, so here it goes: in the previous
+sprint we released <a href="https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-0.8.2.0</code></a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-41" class="table-of-contents__link toc-highlight">High-level overview of sprint 41</a></li><li><a href="#other-contributions" class="table-of-contents__link toc-highlight">Other contributions</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We&#x27;ve finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We&#x27;ve been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we&#x27;ve successfully performed various benchmarking runs on it.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking
+cluster automation. We&#x27;ve pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint
+when using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any
+inconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.
+This feature adds another layer of robustness to the whole system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler
+versions. We&#x27;ve future-proofed our benchmarking code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend
+accordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we&#x27;ve observed with the
+nomad backend - which will be a big step towards production use.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href="https://github.com/input-output-hk/cardano-ops/pull/416" target="_blank" rel="noopener noreferrer">cardano-ops-pull-416</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href="https://github.com/input-output-hk/cardano-world/pull/104" target="_blank" rel="noopener noreferrer">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/105" target="_blank" rel="noopener noreferrer">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/106" target="_blank" rel="noopener noreferrer">cardano-world-pull-106</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-04-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-01-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#cardano-ops" class="table-of-contents__link toc-highlight">Cardano-ops</a></li><li><a href="#cardano-perf" class="table-of-contents__link toc-highlight">Cardano-perf</a></li><li><a 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-09T00:00:00.000Z" itemprop="datePublished">August 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/256" target="_blank" rel="noopener noreferrer">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/261" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href="https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd" target="_blank" rel="noopener noreferrer">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> and <a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn&#x27;t happened yet.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-09-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-10-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-04-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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The team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a></li><li>Completed the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href="https://github.com/input-output-hk/mithril/issues/1085" target="_blank" rel="noopener noreferrer">#1085</a></li><li>Completed the issue <code>Ingest &#x27;mainnet&#x27; metrics/logs in Grafana</code> <a href="https://github.com/input-output-hk/mithril/issues/1122" target="_blank" rel="noopener noreferrer">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a &#x27;clean&#x27; file to extracted database in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1131" target="_blank" rel="noopener noreferrer">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href="https://github.com/input-output-hk/mithril/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Completed the issue <code>The &#x27;release-preprod&#x27; network stopped producing certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Completed the issue <code>The &#x27;release-mainnet&#x27; network does not show up in the explorer</code> <a href="https://github.com/input-output-hk/mithril/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.2&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1090" target="_blank" rel="noopener noreferrer">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can&#x27;t sign with &#x27;Invalid signature for party&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/1125" target="_blank" rel="noopener noreferrer">#1125</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-10-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-11-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version
+8.1.2, ensuring compatibility with the latest mainnet release. The team also
+participated in discussions about a &quot;cardanonical&quot; JSON schema and added it as a
+submodule to the project, contributing to improved data modeling and
+interoperability.</p><p>In terms of community engagement, the team successfully onboarded a new
+contributor, also participated in a RareEvo Twitter space, and continued
+preparations for the Hydra master-class.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href="https://github.com/input-output-hk/hydra/issues/1007" target="_blank" rel="noopener noreferrer">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and
+add it as submodule to the project
+<a href="https://github.com/input-output-hk/hydra/pull/1013" target="_blank" rel="noopener noreferrer">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Release 0.12.0</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-11-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-15-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-11-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we&#x27;re currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of our release benchmarking cycle, we&#x27;ve completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,
+we&#x27;re working on having a trace message self-document the final tracing configuration of a running node. Apart from adding
+insight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we&#x27;re setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent
+and reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were
+able to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-11-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-11-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-10-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-15T00:00:00.000Z" itemprop="datePublished">August 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-08-02 - 2023-08-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/169" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/164" target="_blank" rel="noopener noreferrer">Reenable golden tests</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/163" target="_blank" rel="noopener noreferrer">#128 DRep key generation</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/160" target="_blank" rel="noopener noreferrer">Bump index states</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/159" target="_blank" rel="noopener noreferrer">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/158" target="_blank" rel="noopener noreferrer">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/151" target="_blank" rel="noopener noreferrer">Plural for command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/144" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/142" target="_blank" rel="noopener noreferrer">Wire up constitution creation in the new era based cli commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/140" target="_blank" rel="noopener noreferrer">cardano-cli 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/137" target="_blank" rel="noopener noreferrer">Wire up remaining DReps</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/136" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/189" target="_blank" rel="noopener noreferrer">Release cardano-api 8.13.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/187" target="_blank" rel="noopener noreferrer">Fix build</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/185" target="_blank" rel="noopener noreferrer">cardano-api 8.13.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/181" target="_blank" rel="noopener noreferrer">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/180" target="_blank" rel="noopener noreferrer">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/173" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/171" target="_blank" rel="noopener noreferrer">Simplify code with new constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/170" target="_blank" rel="noopener noreferrer">Fix <code>EraCast Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/168" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/167" target="_blank" rel="noopener noreferrer">Fix committee hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/164" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/163" target="_blank" rel="noopener noreferrer">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5430" target="_blank" rel="noopener noreferrer">cardano-git-rev: New version for CHaP</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-15-node-cli-api.md" target="_blank" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Crypto Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Full Node Verifier merged <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href="https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta" target="_blank" rel="noopener noreferrer">this</a> fork.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href="https://github.com/input-output-hk/kes-agent/issues/19" target="_blank" rel="noopener noreferrer">#19</a></li><li>Receipt confirmation message <a href="https://github.com/input-output-hk/kes-agent/issues/20" target="_blank" rel="noopener noreferrer">#20</a></li><li>KES agent binary ready <a href="https://github.com/input-output-hk/kes-agent/issues/21" target="_blank" rel="noopener noreferrer">#21</a></li><li>Control client implemented <a href="https://github.com/input-output-hk/kes-agent/issues/11" target="_blank" rel="noopener noreferrer">#11</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-crypto.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-18-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-17-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#mithril" class="table-of-contents__link toc-highlight">Mithril</a></li><li><a href="#musig2" class="table-of-contents__link toc-highlight">MuSig2</a></li><li><a href="#sidechains" class="table-of-contents__link toc-highlight">Sidechains</a></li><li><a href="#kes-agent" class="table-of-contents__link toc-highlight">KES agent</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.
+We also continued testing and improving the new db-sync options.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Conway integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Support for Sanchonet
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1476" target="_blank" rel="noopener noreferrer">#1476</a></li><li>Stake distribution is computed earlier
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Testing new db-sync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>Added support for ghc-9.6
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1479" target="_blank" rel="noopener noreferrer">#1479</a></li><li>Tech debt: improve exceptions
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1471" target="_blank" rel="noopener noreferrer">#1471</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-17-crypto"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Crypto Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-17-secp-issue"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SECP bindings Security Issue Report</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SECP bindings Security Issue Report</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="security-issue-report-secp256k1-bug">Security Issue Report: SECP256k1 bug<a class="hash-link" href="#security-issue-report-secp256k1-bug" title="Direct link to heading">​</a></h2><p>Date Occurred: July 15, 2022
+Severity:  Potentially Very High if exploited on Mainnet
+Authors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-issue">Summary of Issue<a class="hash-link" href="#summary-of-issue" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="criticality-level">Criticality Level<a class="hash-link" href="#criticality-level" title="Direct link to heading">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet
+Context</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.
+How was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="what-action-was-taken">What Action was Taken<a class="hash-link" href="#what-action-was-taken" title="Direct link to heading">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).
+Fixes were applied to prevent the use of the primitives.
+A full security audit was carried out on the bindings.
+The rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="potential-effect">Potential Effect<a class="hash-link" href="#potential-effect" title="Direct link to heading">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="actual-effect">Actual Effect<a class="hash-link" href="#actual-effect" title="Direct link to heading">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ongoing-mitigations-needed-if-any">Ongoing Mitigations Needed, if any<a class="hash-link" href="#ongoing-mitigations-needed-if-any" title="Direct link to heading">​</a></h4><p>None</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="responsibility-for-mitigations">Responsibility for Mitigations<a class="hash-link" href="#responsibility-for-mitigations" title="Direct link to heading">​</a></h4><p>Core team</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description-of-incident">Detailed description of Incident<a class="hash-link" href="#detailed-description-of-incident" title="Direct link to heading">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin&#x27;s library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518" target="_blank" rel="noopener noreferrer">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61" target="_blank" rel="noopener noreferrer">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170" target="_blank" rel="noopener noreferrer">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10" target="_blank" rel="noopener noreferrer">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/289" target="_blank" rel="noopener noreferrer">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="recommendations">Recommendations<a class="hash-link" href="#recommendations" title="Direct link to heading">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are &quot;safe&quot;. Treat all external calls circumspectly.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-secp-security-issue-report.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-17-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-15-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#security-issue-report-secp256k1-bug" class="table-of-contents__link toc-highlight">Security Issue Report: SECP256k1 bug</a><ul><li><a href="#summary-of-issue" class="table-of-contents__link toc-highlight">Summary of Issue</a></li><li><a href="#detailed-description-of-incident" class="table-of-contents__link toc-highlight">Detailed description of Incident</a></li><li><a href="#recommendations" class="table-of-contents__link toc-highlight">Recommendations</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of
+programs to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)
+mini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part
+of 4th year masters course on distributed systemsby colleagues at UC
+Louvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part
+of a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and
+wrote property tests for its algebraic laws</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-23-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-18-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that
+brings support for cardano-node 8.1.2, along with performance enhancements and
+various API improvements. Additionally, the team successfully onboarded a new
+contributor who is now actively participating in operating a Hydra Head. They
+took part in a meeting of the Intersect open source committee and prepared the
+Hydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href="https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true" target="_blank" rel="noopener noreferrer">using this
+form</a>.
+We hope to make it possible to follow along on-line as well and will announce
+details on the Hydra announcements channel on the <a href="https://discord.gg/Qq5vNTg9PT" target="_blank" rel="noopener noreferrer">IOG discord
+server</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance
+and several API improvements. <a href="https://github.com/input-output-hk/hydra/releases/tag/0.12.0" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-18-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-18-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting
+for DRep and Stake Pool Operators is now at the state that can be used by downstream
+components. Addition of new ledger state queries makes it possible to verify changes to
+the governance state, such as placement of votes, submission of governance proposals,
+inspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the
+ability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3577" target="_blank" rel="noopener noreferrer">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3609" target="_blank" rel="noopener noreferrer">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3604" target="_blank" rel="noopener noreferrer">pull-3604</a> - README: update CIP-1694 link</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3616" target="_blank" rel="noopener noreferrer">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3599" target="_blank" rel="noopener noreferrer">pull-3599</a> - Add governance action well-formedness check</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3607" target="_blank" rel="noopener noreferrer">pull-3607</a> - Rename governance to gov</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3601" target="_blank" rel="noopener noreferrer">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3615" target="_blank" rel="noopener noreferrer">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3596" target="_blank" rel="noopener noreferrer">pull-3596</a> - Upgradeable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3625" target="_blank" rel="noopener noreferrer">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3592" target="_blank" rel="noopener noreferrer">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a> - Treasury donations</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3633" target="_blank" rel="noopener noreferrer">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3634" target="_blank" rel="noopener noreferrer">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3630" target="_blank" rel="noopener noreferrer">pull-3630</a> - Implemented DRep refreshing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3640" target="_blank" rel="noopener noreferrer">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3636" target="_blank" rel="noopener noreferrer">pull-3636</a> - Implement DRep ratification with an &quot;always passing&quot;; threshold</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3648" target="_blank" rel="noopener noreferrer">pull-3648</a> - Governance queries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3650" target="_blank" rel="noopener noreferrer">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3658" target="_blank" rel="noopener noreferrer">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3628" target="_blank" rel="noopener noreferrer">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3619" target="_blank" rel="noopener noreferrer">pull-3619</a> - Disabled a broken test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3660" target="_blank" rel="noopener noreferrer">pull-3660</a> - Fix bounds and versions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3661" target="_blank" rel="noopener noreferrer">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-18-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-18-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-progress" class="table-of-contents__link toc-highlight">Conway progress</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-42">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22" target="_blank" rel="noopener noreferrer">sprint 42</a><a class="hash-link" href="#high-level-overview-of-sprint-42" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version
+<code>0.9.0.0</code>) which includes <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">big ledger peers feature</a>.
+This is the primary peer selection mechanism to defend against eclipses.   We
+also prepared a PR to updated <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/165" target="_blank" rel="noopener noreferrer"><code>ouroboros-cosnensus</code></a>
+and <a href="https://github.com/input-output-hk/ekg-forward/pull/30" target="_blank" rel="noopener noreferrer"><code>ekg-forward</code></a> packages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cddl-specs-for-protocol-codecs">CDDL specs for protocol codecs<a class="hash-link" href="#cddl-specs-for-protocol-codecs" title="Direct link to heading">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation
+which is highly polymorphic.  <code>cddl</code> doesn&#x27;t have the notion of polymorphism,
+but has <code>any</code> which can generate any valid cbor term.  We matched it with an
+<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.
+This simplified the specifications and made it easier to understand which parts
+are defined in the spec, and which parts are left unspecified.  See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4595" target="_blank" rel="noopener noreferrer">ouroboros-network#4595</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network-framework-api-changes">Ouroboros-Network-Framework API changes<a class="hash-link" href="#ouroboros-network-framework-api-changes" title="Direct link to heading">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.
+The <code>ouroboros-network-framework</code> package contains a redesign of API exposed to
+<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to
+extend in the future if there will be new arguments that need to be passed to
+mini-protocol initiator and responders which comes from the low-level network
+layer.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nix-setup-ci">Nix setup (CI)<a class="hash-link" href="#nix-setup-ci" title="Direct link to heading">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team
+we ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,
+<code>hls</code>, <code>cddl</code>, and more.  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4640" target="_blank" rel="noopener noreferrer">ouroboros-network#4640</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4643" target="_blank" rel="noopener noreferrer">ouroboros-network#4643</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first
+contract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted
+code &amp; design review.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois-review">Galois Review<a class="hash-link" href="#galois-review" title="Direct link to heading">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3835" target="_blank" rel="noopener noreferrer">ouroboros-network#3835</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci">CI<a class="hash-link" href="#ci" title="Direct link to heading">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be
+executed with extra concurrency <a href="https://github.com/input-output-hk/ouroboros-network/pull/4637" target="_blank" rel="noopener noreferrer">ouroboros-network#4637</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4649" target="_blank" rel="noopener noreferrer">ouroboros-network#4649</a>.</p><p>We also added GitHub&#x27;s dependabot <a href="https://github.com/input-output-hk/ouroboros-network/pull/4650" target="_blank" rel="noopener noreferrer">ouroboros-network#4650</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We settled on implementation design of bootstrap peers which is being
+implemented, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-18-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-18-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-42" class="table-of-contents__link toc-highlight">High-level overview of sprint 42</a><ul><li><a href="#eclipse-evasion" class="table-of-contents__link toc-highlight">Eclipse Evasion</a></li><li><a href="#cddl-specs-for-protocol-codecs" class="table-of-contents__link toc-highlight">CDDL specs for protocol codecs</a></li><li><a href="#ouroboros-network-framework-api-changes" class="table-of-contents__link toc-highlight">Ouroboros-Network-Framework API changes</a></li><li><a href="#nix-setup-ci" class="table-of-contents__link toc-highlight">Nix setup (CI)</a></li></ul></li><li><a href="#other-contributions" class="table-of-contents__link toc-highlight">Other contributions</a><ul><li><a href="#cardano-network-service-assurance" class="table-of-contents__link toc-highlight">Cardano Network Service Assurance</a></li><li><a href="#galois-review" class="table-of-contents__link toc-highlight">Galois Review</a></li><li><a href="#ci" class="table-of-contents__link toc-highlight">CI</a></li><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href="https://flake.parts" target="_blank" rel="noopener noreferrer">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href="https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href="https://github.com/input-output-hk/cardano-world/pull/109" target="_blank" rel="noopener noreferrer">cardano-world-pull-109</a></li><li>Update p2p configs: <a href="https://github.com/input-output-hk/cardano-world/pull/110" target="_blank" rel="noopener noreferrer">cardano-world-pull-110</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inputs-check">Inputs-check<a class="hash-link" href="#inputs-check" title="Direct link to heading">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href="https://github.com/input-output-hk/inputs-check" target="_blank" rel="noopener noreferrer">inputs-check</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-18-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-17-crypto"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Crypto Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#cardano-ops" class="table-of-contents__link toc-highlight">Cardano-ops</a></li><li><a href="#cardano-parts" class="table-of-contents__link 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-23T00:00:00.000Z" itemprop="datePublished">August 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.
+On the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/314" target="_blank" rel="noopener noreferrer">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/305" target="_blank" rel="noopener noreferrer">#305</a>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href="https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href="https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/275" target="_blank" rel="noopener noreferrer">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/284" target="_blank" rel="noopener noreferrer">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/283" target="_blank" rel="noopener noreferrer">#283</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/301" target="_blank" rel="noopener noreferrer">#301</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/304" target="_blank" rel="noopener noreferrer">#304</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/308" target="_blank" rel="noopener noreferrer">#308</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-23-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-24-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-18-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech debt</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-24T00:00:00.000Z" itemprop="datePublished">August 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we&#x27;re developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We&#x27;re performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we&#x27;re working on respective integrations on both those paths.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held
+in memory, which wouldn&#x27;t fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell&#x27;s native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We&#x27;re splitting out everything that&#x27;s verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We&#x27;re able to perform full runs on the new hardware cluster
+and porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-24-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-25-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-23-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-25T00:00:00.000Z" itemprop="datePublished">August 25, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which
+continously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at
+RareEvo workshop as an educational initiative for the community.
+Additionally, the team updated the Hydra demo and tutorial to include Mithril
+and latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve
+<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a
+bad user experience.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>New ADR for “Resourced based API” <a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a poc on network resilience working <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/931" target="_blank" rel="noopener noreferrer">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a>: &quot;Close transaction dropped from cardano-node&quot;</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-25-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-28-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-24-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-28T00:00:00.000Z" itemprop="datePublished">August 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1106" target="_blank" rel="noopener noreferrer">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href="https://github.com/input-output-hk/mithril/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Completed the issue <code>Use the &#x27;/signers/registered&#x27; route to verify if a signer is registered</code> <a href="https://github.com/input-output-hk/mithril/issues/1152" target="_blank" rel="noopener noreferrer">#1152</a></li><li>Worked on the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Worked on the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-28-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-08-29-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-25-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-08-29T00:00:00.000Z" itemprop="datePublished">August 29, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-08-16 - 2023-08-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger&#x27;s PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">- GetGovState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepStakeDistr</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetCommitteeState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetConstitution</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/179" target="_blank" rel="noopener noreferrer">Add goverance info action creation to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/176" target="_blank" rel="noopener noreferrer">Add create-no-confidence command to era based cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/175" target="_blank" rel="noopener noreferrer">Add create-new-committee command to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/204" target="_blank" rel="noopener noreferrer">Enable <code>--drep-script-hash</code> option</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/211" target="_blank" rel="noopener noreferrer">Remove <code>experimental</code> subcommand</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/210" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/194" target="_blank" rel="noopener noreferrer">New <code>governance drep id</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/189" target="_blank" rel="noopener noreferrer">Add <code>governance query</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/187" target="_blank" rel="noopener noreferrer">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/203" target="_blank" rel="noopener noreferrer">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/201" target="_blank" rel="noopener noreferrer">Release 8.6.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/195" target="_blank" rel="noopener noreferrer">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/193" target="_blank" rel="noopener noreferrer">Add test for conway governance action create-constitution</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/192" target="_blank" rel="noopener noreferrer">Move legacy errors out of legacy command structure modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/191" target="_blank" rel="noopener noreferrer">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/188" target="_blank" rel="noopener noreferrer">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/186" target="_blank" rel="noopener noreferrer">Move some error types</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/185" target="_blank" rel="noopener noreferrer">Delete unused module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/183" target="_blank" rel="noopener noreferrer">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/182" target="_blank" rel="noopener noreferrer">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/180" target="_blank" rel="noopener noreferrer">Remove example era-based parsers we don&#x27;t need anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/174" target="_blank" rel="noopener noreferrer">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/216" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/214" target="_blank" rel="noopener noreferrer">Replace ProtocolParameters usage with ledger&#x27;s PParams</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/210" target="_blank" rel="noopener noreferrer">Use injective type families to improve type inference</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/209" target="_blank" rel="noopener noreferrer">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/208" target="_blank" rel="noopener noreferrer">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/207" target="_blank" rel="noopener noreferrer">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/206" target="_blank" rel="noopener noreferrer">Expose ledger lenses for governance types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/205" target="_blank" rel="noopener noreferrer">New version cardano-api-8.16.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/204" target="_blank" rel="noopener noreferrer">Add <code>VotingProcedures</code> type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/202" target="_blank" rel="noopener noreferrer">Release 8.16.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/200" target="_blank" rel="noopener noreferrer">Update createAnchor to use hashAnchorData</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/197" target="_blank" rel="noopener noreferrer">Release 8.15.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/196" target="_blank" rel="noopener noreferrer">Add consensus governance queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the
+formal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-06-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-01-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network
+layer and have the first draft document related to needed design. They also
+improved the user experience by allowing a commit using inline datums.
+Discussed the off-chain governance with researchers and improved internal model
+tests. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a clear understanding of the changes we need for the &quot;Improve network resiliency&quot; feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-01-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-01-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3659" target="_blank" rel="noopener noreferrer">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3637" target="_blank" rel="noopener noreferrer">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3651" target="_blank" rel="noopener noreferrer">pull-3651</a> - Inactive DReps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3664" target="_blank" rel="noopener noreferrer">pull-3664</a> - Track proposal expiry</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3668" target="_blank" rel="noopener noreferrer">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3669" target="_blank" rel="noopener noreferrer">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3676" target="_blank" rel="noopener noreferrer">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3635" target="_blank" rel="noopener noreferrer">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3670" target="_blank" rel="noopener noreferrer">pull-3670</a> - Validate previously enacted govAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3694" target="_blank" rel="noopener noreferrer">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3674" target="_blank" rel="noopener noreferrer">pull-3674</a> - Added RATIFY thresholds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3684" target="_blank" rel="noopener noreferrer">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3688" target="_blank" rel="noopener noreferrer">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3677" target="_blank" rel="noopener noreferrer">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3686" target="_blank" rel="noopener noreferrer">pull-3686</a> - Post patch release fixup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3695" target="_blank" rel="noopener noreferrer">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3683" target="_blank" rel="noopener noreferrer">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3662" target="_blank" rel="noopener noreferrer">pull-3662</a> - Equality on raw types</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-43">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22" target="_blank" rel="noopener noreferrer">sprint 43</a><a class="hash-link" href="#high-level-overview-of-sprint-43" title="Direct link to heading">​</a></h2><p>In this sprint, we received contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> &amp; <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>.  Karl Knutsson
+(<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts
+and our <code>WireShark</code> dissector.  While the <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> developers focused on
+addressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to
+be run natively on all platforms (these tests mostly contain tests that
+require <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We
+run <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,
+<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.
+The <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on
+GitHub Actions runners. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4653" target="_blank" rel="noopener noreferrer">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>
+version.  So far he integrated <code>cardano-ledger-conway-1.8</code> and
+<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and
+<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,
+<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released
+to <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered
+by Karl from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>). More details are included below.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-p2p-addoption">Progress on P2P addoption<a class="hash-link" href="#progress-on-p2p-addoption" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="spo-relays">SPO relays<a class="hash-link" href="#spo-relays" title="Direct link to heading">​</a></h4><p>There are currently ~2000 relays running P2P
+enabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On
+16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil
+Ada.</p><p><img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png" width="2034" height="1588" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png" width="2038" height="1594" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> and their mainnet monitoring
+infrastructure.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iog-relays">IOG relays<a class="hash-link" href="#iog-relays" title="Direct link to heading">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all
+IOG relays will be running P2P.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>In this sprint, we got a few contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>
+miniprotocols.  These timeouts help a node remove idle connections from the
+responder (server) side <a href="https://github.com/input-output-hk/ouroboros-network/pull/4648" target="_blank" rel="noopener noreferrer">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>.</li></ul><p><a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been working on refactoring the main entry function of P2P <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4652" target="_blank" rel="noopener noreferrer">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It&#x27;s supposed to relay the
+remote value, but instead, it returns the local value. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4642" target="_blank" rel="noopener noreferrer">ouroboros-network-#4642</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="async-demotion-test-fix">Async Demotion Test Fix<a class="hash-link" href="#async-demotion-test-fix" title="Direct link to heading">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of
+the test itself rather than a bug in the connection manager. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4655" target="_blank" rel="noopener noreferrer">ouroboros-network-#4655</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-01-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-01-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-43" class="table-of-contents__link toc-highlight">High-level overview of sprint 43</a><ul><li><a href="#progress-on-p2p-addoption" class="table-of-contents__link toc-highlight">Progress on P2P addoption</a></li></ul></li><li><a href="#detailed-description" class="table-of-contents__link toc-highlight">Detailed description</a></li><li><a href="#peer-sharing" class="table-of-contents__link toc-highlight">Peer Sharing</a></li><li><a href="#async-demotion-test-fix" class="table-of-contents__link toc-highlight">Async Demotion Test Fix</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a> repository started -- &quot;Content Addressed Packages&quot;<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don&#x27;t have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Content addressed packages -- new repo: <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Flake devShell module improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/4" target="_blank" rel="noopener noreferrer">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/5" target="_blank" rel="noopener noreferrer">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/6" target="_blank" rel="noopener noreferrer">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href="https://github.com/input-output-hk/cardano-parts/pull/7" target="_blank" rel="noopener noreferrer">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href="https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module" target="_blank" rel="noopener noreferrer">cardano-parts-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href="https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href="https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Sanchonet demonstration repository: <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-01-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-08-29-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#capkgs" class="table-of-contents__link toc-highlight">Capkgs</a></li><li><a href="#cardano-ops" class="table-of-contents__link 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-06T00:00:00.000Z" itemprop="datePublished">September 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.
+On the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.
+The Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203" target="_blank" rel="noopener noreferrer">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418" target="_blank" rel="noopener noreferrer">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3099" target="_blank" rel="noopener noreferrer">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/323" target="_blank" rel="noopener noreferrer">#323</a>).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3491" target="_blank" rel="noopener noreferrer">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/91" target="_blank" rel="noopener noreferrer">#91</a>.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-06-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-07-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-01-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech debt</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2335.0" target="_blank" rel="noopener noreferrer"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href="https://github.com/input-output-hk/mithril/issues/1155" target="_blank" rel="noopener noreferrer">#1155</a></li><li>Completed the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/948" target="_blank" rel="noopener noreferrer">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href="https://github.com/input-output-hk/mithril/issues/947" target="_blank" rel="noopener noreferrer">#947</a></li><li>Completed the issue <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href="https://github.com/input-output-hk/mithril/issues/1160" target="_blank" rel="noopener noreferrer">#1160</a></li><li>Completed the issue <code>Update &#x27;ed25519-dalek&#x27; to &#x27;2.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1188" target="_blank" rel="noopener noreferrer">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href="https://github.com/input-output-hk/mithril/issues/1151" target="_blank" rel="noopener noreferrer">#1151</a></li><li>Completed the issue <code>Fix end to end &#x27;wait_for_the_expected_time&#x27; test</code> <a href="https://github.com/input-output-hk/mithril/issues/1191" target="_blank" rel="noopener noreferrer">#1191</a></li><li>Completed the issue <code>Fix docs &#x27;git checkout&#x27; command</code> <a href="https://github.com/input-output-hk/mithril/issues/1174" target="_blank" rel="noopener noreferrer">#1174</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-07-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-08-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-07-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We&#x27;re productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node&#x27;s traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation
+operation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point
+in time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.
+This feature enables feedback on when tracer implementation details in some component might have changed. It&#x27;s also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we&#x27;ve created a fine-grained configuration of the new system that caters to benchmarking&#x27;s need of very many
+detailed trace messages. It&#x27;s aimed at mirroring the same amount of trace messages, and information, we&#x27;re seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we&#x27;re using it in production mode to comparatively benchmark both tracing systems after merging past month&#x27;s optimizations - which is the
+first real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-07-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-07-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-06-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-08T00:00:00.000Z" itemprop="datePublished">September 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline
+datums. They simplified the chain layer by refactoring how the chain state is
+persisted. Updates to the Hydra tutorial were completed, including CI workflows
+to keep it up-to-date. The team engaged in discussions with researchers about
+incremental commits &amp; decommits, and drafted an architectural decision record
+for a resource-based API. They also explored simpler solutions for the upcoming
+network resilience feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Support InlineScriptDatum in commit
+<a href="https://github.com/input-output-hk/hydra/issues/1043" target="_blank" rel="noopener noreferrer">#1043</a></li><li>Refactored chain state persistency
+<a href="https://github.com/input-output-hk/hydra/pull/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)
+<a href="https://github.com/input-output-hk/hydra/issues/997" target="_blank" rel="noopener noreferrer">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \&quot;Network
+resilience problem\&quot; to find a KISS solution for
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Drafted and discussed incremental de-/commit features within team
+and with researchers
+<a href="https://github.com/input-output-hk/hydra/issues/199" target="_blank" rel="noopener noreferrer">#199</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Created ADR for a resource based overhaul of the API
+<a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already
+understood)</li><li>An ADR for improving tx construction &amp; observation to not need chain
+state</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-08-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-12-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-07-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-12T00:00:00.000Z" itemprop="datePublished">September 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-08-30 - 2023-09-12</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Release of <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.
+This release completes <a href="https://sancho.network/get-started#sanchonet-feature-rollout" target="_blank" rel="noopener noreferrer">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming
+<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top
+of that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.
+Removing <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/261" target="_blank" rel="noopener noreferrer">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/257" target="_blank" rel="noopener noreferrer">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/260" target="_blank" rel="noopener noreferrer">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/256" target="_blank" rel="noopener noreferrer">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/254" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/250" target="_blank" rel="noopener noreferrer">#221 Update description fields on delegation certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/249" target="_blank" rel="noopener noreferrer">Update error message for eras mismatch between node and cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/248" target="_blank" rel="noopener noreferrer">Era based <code>address</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/246" target="_blank" rel="noopener noreferrer">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/245" target="_blank" rel="noopener noreferrer">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/244" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/243" target="_blank" rel="noopener noreferrer">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/242" target="_blank" rel="noopener noreferrer">Move <code>node</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/241" target="_blank" rel="noopener noreferrer">Era-based <code>stake-address</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/240" target="_blank" rel="noopener noreferrer">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/239" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from errors</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/238" target="_blank" rel="noopener noreferrer">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/237" target="_blank" rel="noopener noreferrer">Move <code>key</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/236" target="_blank" rel="noopener noreferrer">Move <code>query</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/235" target="_blank" rel="noopener noreferrer">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/234" target="_blank" rel="noopener noreferrer">Move <code>pool</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/233" target="_blank" rel="noopener noreferrer">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/232" target="_blank" rel="noopener noreferrer">Move <code>address</code> run command implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/231" target="_blank" rel="noopener noreferrer">Delete legacy <code>conway governance</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/230" target="_blank" rel="noopener noreferrer">Era sensitive transaction run commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/229" target="_blank" rel="noopener noreferrer">Move transaction command code into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/228" target="_blank" rel="noopener noreferrer">Fix query <code>key-period-info</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/227" target="_blank" rel="noopener noreferrer">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/225" target="_blank" rel="noopener noreferrer">Prefix complex delegation certificate option</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/233" target="_blank" rel="noopener noreferrer">Fix test constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/231" target="_blank" rel="noopener noreferrer">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/230" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/228" target="_blank" rel="noopener noreferrer">Release 8.19.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/226" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/225" target="_blank" rel="noopener noreferrer">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/224" target="_blank" rel="noopener noreferrer">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/222" target="_blank" rel="noopener noreferrer">Release 8.18.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/221" target="_blank" rel="noopener noreferrer">Fix exception when executing drep queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-14T00:00:00.000Z" itemprop="datePublished">September 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also
+the team has ran a number of benchmarks and tests for the new options/flavours of DBSync
+and prepared a blogpost which summorises them, for downstream components.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1498" target="_blank" rel="noopener noreferrer">#1498</a></li><li>Simplifications of new feautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1496" target="_blank" rel="noopener noreferrer">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds
+tests for them
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>CI fixes
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1494" target="_blank" rel="noopener noreferrer">#1494</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1491" target="_blank" rel="noopener noreferrer">#1491</a></li><li>Prepared a blogpost about different DBSync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf" target="_blank" rel="noopener noreferrer">blog</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-14-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-15-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-12-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-20-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-15-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in
+Nantes, France. They used this oportunity to meet fellow mithril team and spend
+some time together to hack on some code and, as always, reflect on the past work
+and find optimal path forward for both projects. They also fixed a bug that
+caused hydra-node to crash when querying L1, worked on a new network resillience
+proof-of-concept and accepted a new ADR related to stateless transaction
+observation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href="https://github.com/input-output-hk/hydra/pull/1048" target="_blank" rel="noopener noreferrer">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href="https://github.com/input-output-hk/hydra/pull/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Collected experimental CI findings <a href="https://github.com/input-output-hk/hydra/pull/1070" target="_blank" rel="noopener noreferrer">#1070</a></li><li>Propose first POC for the network resilience <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete hydra-support in kupo <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">kupo#117</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-15-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-15-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team&#x27;s focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial
+version of Constitution. Priority in which Governance Action are now enacted matches the
+specification. DRep&#x27;s deposits are now properly accounted for. Governance actions that are
+not allowed to be voted on by Stake Pool operators and Constitutional Committee members
+are prevented by transaction submission failure, rather than simply being ignored. There
+was a few important CDDL fixes as well as a lot of new round trip serialization
+tests. Constraint based testing framework has also received a lot of improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3681" target="_blank" rel="noopener noreferrer">pull-3681</a> - Conway Genesis additions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3690" target="_blank" rel="noopener noreferrer">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3705" target="_blank" rel="noopener noreferrer">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3700" target="_blank" rel="noopener noreferrer">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3704" target="_blank" rel="noopener noreferrer">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3698" target="_blank" rel="noopener noreferrer">pull-3698</a> - Reordering of governance actions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3712" target="_blank" rel="noopener noreferrer">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3716" target="_blank" rel="noopener noreferrer">pull-3716</a> - Abstract threshold calculation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3725" target="_blank" rel="noopener noreferrer">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3718" target="_blank" rel="noopener noreferrer">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3721" target="_blank" rel="noopener noreferrer">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3629" target="_blank" rel="noopener noreferrer">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3680" target="_blank" rel="noopener noreferrer">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3708" target="_blank" rel="noopener noreferrer">pull-3708</a> - Post release changes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3730" target="_blank" rel="noopener noreferrer">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3697" target="_blank" rel="noopener noreferrer">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3709" target="_blank" rel="noopener noreferrer">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3726" target="_blank" rel="noopener noreferrer">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3713" target="_blank" rel="noopener noreferrer">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-15-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-15-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-era" class="table-of-contents__link toc-highlight">Conway era</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-44">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22" target="_blank" rel="noopener noreferrer">sprint 44</a><a class="hash-link" href="#high-level-overview-of-sprint-44" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we
+identified a possible improvement to bootstrap peers. A more detailed
+description is available <a href="https://github.com/input-output-hk/ouroboros-network/issues/4675" target="_blank" rel="noopener noreferrer">here</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-840-release">Cardano-Node-8.4.0 Release<a class="hash-link" href="#cardano-node-840-release" title="Direct link to heading">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final
+integration <a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">PR</a> is currently being merged. We published
+new versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with
+<code>cardano-node</code>.  This is towards our goal which we planned for the next
+quarter.  The identified tasks are to fix breaking tests, and then measure and
+address possible performance regressions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4663" target="_blank" rel="noopener noreferrer">ouroboros-network-#4663</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4664" target="_blank" rel="noopener noreferrer">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4660" target="_blank" rel="noopener noreferrer">ouroboros-network-#4660</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning
+the number of SPOs or stakes, although the number of overall P2P relays has
+increased.  Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>) is investigating
+this issue.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png" width="2014" height="1586" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png" width="2016" height="1576" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a> and their mainnet
+monitoring infrastructure.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-15-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-15-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-44" class="table-of-contents__link toc-highlight">High-level overview of sprint 44</a><ul><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li><li><a href="#cardano-node-840-release" class="table-of-contents__link toc-highlight">Cardano-Node-8.4.0 Release</a></li><li><a href="#towards-typed-protocols-0200" class="table-of-contents__link toc-highlight">Towards Typed Protocols 0.2.0.0</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech Debt</a></li><li><a href="#p2p-adoption" class="table-of-contents__link toc-highlight">P2P adoption</a></li><li><a href="#open-source" class="table-of-contents__link toc-highlight">Open Source</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href="https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108" target="_blank" rel="noopener noreferrer">here</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href="https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href="https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710" target="_blank" rel="noopener noreferrer">cardano-ops-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href="https://github.com/input-output-hk/cardano-parts/pull/10" target="_blank" rel="noopener noreferrer">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href="https://github.com/input-output-hk/cardano-parts/pull/11" target="_blank" rel="noopener noreferrer">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href="https://github.com/input-output-hk/cardano-parts/pull/12" target="_blank" rel="noopener noreferrer">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href="https://github.com/input-output-hk/cardano-parts/pull/13" target="_blank" rel="noopener noreferrer">cardano-parts-pull-13</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href="https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/1" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href="https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href="https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.
+We are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.
+On the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.
+We also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/349" target="_blank" rel="noopener noreferrer">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node&#x27;s baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.
+We are now drafting the final self-contained argument. (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4157" target="_blank" rel="noopener noreferrer">4157</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/339" target="_blank" rel="noopener noreferrer">339</a>).
+A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/340" target="_blank" rel="noopener noreferrer">340</a>, <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/354" target="_blank" rel="noopener noreferrer">354</a>, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/355" target="_blank" rel="noopener noreferrer">355</a>)
+However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/345" target="_blank" rel="noopener noreferrer">345</a> and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/346" target="_blank" rel="noopener noreferrer">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-20-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-22-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-20-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href="https://github.com/input-output-hk/mithril/issues/1200" target="_blank" rel="noopener noreferrer">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1238" target="_blank" rel="noopener noreferrer">#1238</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-20-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-20-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-15-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in
+collaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability
+and identified concrete steps to enhance network resiliency in feature
+items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a>, and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a>.
+Additionally, they contributed the aiken-mode editor integration to the
+aiken-lang organization, updated dependencies to utilize cardano-api
+8.20, and published the Hydra security advisory CVE-2023-42806 with a
+workaround available for users.</p><p>These efforts demonstrate the team\&#x27;s commitment to project improvement,
+security, and open-source community collaboration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command
+<a href="https://github.com/input-output-hk/hydra/pull/1077" target="_blank" rel="noopener noreferrer">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested
+feature items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a></li><li>Moved <a href="https://github.com/aiken-lang/aiken-mode" target="_blank" rel="noopener noreferrer">aiken-mode</a> (created by SN)
+to aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20
+<a href="https://github.com/input-output-hk/hydra/pull/1075" target="_blank" rel="noopener noreferrer">#1075</a></li><li>Published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(workaround available)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish &quot;network resilience to disconnects&quot;
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Finish kupo integration with hydra
+<a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-22-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-26-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-22-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We&#x27;ve been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We&#x27;re currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we&#x27;ve been equipping both that and the existing benchmarking
+backend with means to measure and document network latency for each run. Furthermore we&#x27;ve implemented means to
+capture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences
+in the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we&#x27;re running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We&#x27;ve concluded that baseline profile runs aren&#x27;t directly comparable between the two, so we decided
+to compare standard deviations instead to validate the measurements from nomad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline
+have been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we&#x27;ve looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document
+which runtime configuration the node arrived eventually. We&#x27;re working on providing a machine-readable JSON/YAML
+trace message for that purpose.  </p><p>This will facilitate hot-reloading a node&#x27;s tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it
+produces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an
+impact on our measurements, as we&#x27;d be basically using two different instruments to take them.  </p><p>Along the way we&#x27;ve already been successful in eliminating some possible confounders that had been introduced by the nomad service
+or the slightly different system architecture of the new cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-team-member">New team member<a class="hash-link" href="#new-team-member" title="Direct link to heading">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he&#x27;s an excellent fit for our existing team.
+So I&#x27;m very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-22-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-22-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-20-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li><li><a href="#new-team-member" class="table-of-contents__link toc-highlight">New team member</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-26T00:00:00.000Z" itemprop="datePublished">September 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-09-13 - 2023-09-26</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/302" target="_blank" rel="noopener noreferrer">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/298" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/295" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/292" target="_blank" rel="noopener noreferrer">cardano-cli: add governance create-info command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/287" target="_blank" rel="noopener noreferrer">Release 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/286" target="_blank" rel="noopener noreferrer">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/284" target="_blank" rel="noopener noreferrer">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/283" target="_blank" rel="noopener noreferrer">Update cardano-api to 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/282" target="_blank" rel="noopener noreferrer">Remove unused governance-related code</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/281" target="_blank" rel="noopener noreferrer">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/280" target="_blank" rel="noopener noreferrer">Remove redundant conversions in JSON friendly instances </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/279" target="_blank" rel="noopener noreferrer">Regularise era based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/277" target="_blank" rel="noopener noreferrer">Simplify era handling</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/276" target="_blank" rel="noopener noreferrer">Remove <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/275" target="_blank" rel="noopener noreferrer">Era-based <code>stake-pool</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/274" target="_blank" rel="noopener noreferrer">Fix git revision in <code>version</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/273" target="_blank" rel="noopener noreferrer">cardano-cli-8.8.0.0</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/265" target="_blank" rel="noopener noreferrer">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/264" target="_blank" rel="noopener noreferrer">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/262" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/256" target="_blank" rel="noopener noreferrer">Delete unused eon constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/255" target="_blank" rel="noopener noreferrer">Export ByronEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/254" target="_blank" rel="noopener noreferrer">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/250" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/249" target="_blank" rel="noopener noreferrer">Add JSON instance for Hash GenesisKey </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/248" target="_blank" rel="noopener noreferrer">Support more ledger constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/247" target="_blank" rel="noopener noreferrer">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/246" target="_blank" rel="noopener noreferrer">Release 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/245" target="_blank" rel="noopener noreferrer">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/244" target="_blank" rel="noopener noreferrer">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/243" target="_blank" rel="noopener noreferrer">Fix typos in some deserialization error messages</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/240" target="_blank" rel="noopener noreferrer">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5480" target="_blank" rel="noopener noreferrer">Trace Configuration Trace Message Enhancement</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5466" target="_blank" rel="noopener noreferrer">cardano-node: reduce orphan instances</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5471" target="_blank" rel="noopener noreferrer">Update to cardano-cli 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2337.0" target="_blank" rel="noopener noreferrer"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href="https://mithril.network/doc/adr/6" target="_blank" rel="noopener noreferrer">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1207" target="_blank" rel="noopener noreferrer">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-27-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-29-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-26-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Goedel Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and testing the
+performance analysis tool</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of
+programs with local environments via synchronous channels</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-goedel.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-02-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-29-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#details" class="table-of-contents__link toc-highlight">Details</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability
+network layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on
+how to handle security vulnerability within Hydra, and in particular how to
+handle so-called &quot;Silent fixes&quot;.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Adr/network reliability <a href="https://github.com/input-output-hk/hydra/pull/1082" target="_blank" rel="noopener noreferrer">#1082</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-29-goedel"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Goedel Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-29-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been
+fully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep&#x27;s expiry is prevented by delaying the expiry for all DReps whenever there are no
+proposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to
+allow for individual Plutus language version updates, rather than requiring a complete
+replacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some
+optimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for
+ledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul
+of functionality for initial funds and staking injection whenever node starts up in
+Conway, while bypassing all previous eras.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3729" target="_blank" rel="noopener noreferrer">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3739" target="_blank" rel="noopener noreferrer">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3743" target="_blank" rel="noopener noreferrer">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3746" target="_blank" rel="noopener noreferrer">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3737" target="_blank" rel="noopener noreferrer">pull-3737</a> - Implement EraTransition</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3749" target="_blank" rel="noopener noreferrer">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3748" target="_blank" rel="noopener noreferrer">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3745" target="_blank" rel="noopener noreferrer">pull-3745</a> - Constitutional Committee Ratification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3763" target="_blank" rel="noopener noreferrer">pull-3763</a> - Plutus interface improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3771" target="_blank" rel="noopener noreferrer">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3766" target="_blank" rel="noopener noreferrer">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3765" target="_blank" rel="noopener noreferrer">pull-3765</a> - Improve native script handling</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3747" target="_blank" rel="noopener noreferrer">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3758" target="_blank" rel="noopener noreferrer">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3754" target="_blank" rel="noopener noreferrer">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="releasing">Releasing<a class="hash-link" href="#releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3742" target="_blank" rel="noopener noreferrer">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3744" target="_blank" rel="noopener noreferrer">pull-3744</a> - Changelog 8.4</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3752" target="_blank" rel="noopener noreferrer">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3753" target="_blank" rel="noopener noreferrer">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3760" target="_blank" rel="noopener noreferrer">pull-3760</a> - Fixup issues for release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3764" target="_blank" rel="noopener noreferrer">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3734" target="_blank" rel="noopener noreferrer">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3735" target="_blank" rel="noopener noreferrer">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3728" target="_blank" rel="noopener noreferrer">pull-3728</a> - STS tests based on constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3714" target="_blank" rel="noopener noreferrer">pull-3714</a> - Implement the remaining upgradable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3733" target="_blank" rel="noopener noreferrer">pull-3733</a> - Add some unit tests for Conway features</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3762" target="_blank" rel="noopener noreferrer">pull-3762</a> - Update CDDL for praos headers.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-29-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-29-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-era" class="table-of-contents__link toc-highlight">Conway era</a></li><li><a href="#performance" class="table-of-contents__link toc-highlight">Performance</a></li><li><a href="#releasing" class="table-of-contents__link toc-highlight">Releasing</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">8.4.0-pre</a>.</li><li>The use of cardano-node <a href="https://hub.docker.com/r/inputoutput/cardano-node" target="_blank" rel="noopener noreferrer">docker hub</a> will be deprecated in preference of <a href="https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node" target="_blank" rel="noopener noreferrer">GHCR</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href="https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href="https://github.com/input-output-hk/cardano-parts/pull/14" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/2" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href="https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href="https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-09-29-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-27-mithril"><div 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-02T00:00:00.000Z" itemprop="datePublished">October 2, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-45">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22" target="_blank" rel="noopener noreferrer">sprint 45</a><a class="hash-link" href="#high-level-overview-of-sprint-45" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we
+started investigating where it comes from.  Currently, we see that
+<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running
+in isolation with a simple <code>ping-pong</code> protocol, so the regression might be in
+the new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>
+See <a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosimpor">IOSimPOR<a class="hash-link" href="#iosimpor" title="Direct link to heading">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We&#x27;d like to thank Prof. John Hughes
+(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the
+debugging similar problems in the future easier.</p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Technical Details on IOSim refactoring</summary><div><div class="collapsibleContent_i85q">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we&#x27;d need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim">IOSim<a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of
+the public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is
+a work in progress, <a href="https://github.com/input-output-hk/io-sim/issues/114" target="_blank" rel="noopener noreferrer">io-sim#114</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-newtork-service-assurance">Cardano Newtork Service Assurance<a class="hash-link" href="#cardano-newtork-service-assurance" title="Direct link to heading">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation
+was updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were
+made.</li><li>Galois has started the design for adding a CNSA analysis for &quot;fetched bytes
+over time while node is syncing&quot;.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, we&#x27;ve seen increase in P2P adoption.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png" width="2668" height="1576" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png" width="2674" height="1580" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the
+PR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4676" target="_blank" rel="noopener noreferrer">ouroboros-network#4676</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-02-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-04-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-09-29-goedel"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Goedel Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-45" class="table-of-contents__link toc-highlight">High-level overview of sprint 45</a><ul><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li><li><a href="#towards-typed-protocols-0200" class="table-of-contents__link toc-highlight">Towards Typed Protocols 0.2.0.0</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech Debt</a></li><li><a href="#io-sim" class="table-of-contents__link toc-highlight">IO-Sim</a></li><li><a href="#cardano-newtork-service-assurance" class="table-of-contents__link toc-highlight">Cardano Newtork Service Assurance</a></li><li><a href="#p2p-adoption" class="table-of-contents__link toc-highlight">P2P adoption</a></li><li><a href="#open-source" class="table-of-contents__link toc-highlight">Open Source</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.
+We also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/392" target="_blank" rel="noopener noreferrer">392</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/366" target="_blank" rel="noopener noreferrer">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/384" target="_blank" rel="noopener noreferrer">384</a>).</li><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/369" target="_blank" rel="noopener noreferrer">369</a>).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-04-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-06-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; tracing update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-04-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li><li><a href="#fostering-collaboration" class="table-of-contents__link toc-highlight">Fostering collaboration</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1185" target="_blank" rel="noopener noreferrer">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href="https://github.com/input-output-hk/mithril/issues/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href="https://github.com/input-output-hk/mithril/issues/1265" target="_blank" rel="noopener noreferrer">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href="https://github.com/input-output-hk/mithril/issues/1277" target="_blank" rel="noopener noreferrer">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1274" target="_blank" rel="noopener noreferrer">#1274</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-04-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-04-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-02-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Release <a href="https://github.com/input-output-hk/hydra/releases/tag/0.13.0" target="_blank" rel="noopener noreferrer">0.13.0</a></li><li>Published vulnerability reports <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Merged network resilience work part I <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href="https://github.com/input-output-hk/hydra/pull/1095" target="_blank" rel="noopener noreferrer">#1095</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete Aiken commit validator script <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete Kupo integration <a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Brick upgrade on TUI <a href="https://github.com/input-output-hk/hydra/pull/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-06-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; tracing update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We&#x27;ve developed strategies for future benchmarks of PlutusV3 and UTxO-HD&#x27;s on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the
+performance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results
+show all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The
+feedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Benchmarking UTxO-HD&#x27;s on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,
+we&#x27;d like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service
+receiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is
+more performance critical, the receiving service must still minimize its resource footprint. Moreover, it can
+generate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster&#x27;s topology. We repeated
+the same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-06-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-06-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-04-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#consensus-qtas" class="table-of-contents__link toc-highlight">Consensus QTAs</a></li><li><a href="#development" class="table-of-contents__link toc-highlight">Development</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-10T00:00:00.000Z" itemprop="datePublished">October 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-09-27 - 2023-10-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/347" target="_blank" rel="noopener noreferrer">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/344" target="_blank" rel="noopener noreferrer">Rename create-new-committee into update-committee</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/341" target="_blank" rel="noopener noreferrer">New version cardano-cli-8.12.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/338" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/337" target="_blank" rel="noopener noreferrer">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/330" target="_blank" rel="noopener noreferrer">Drep certification registration: add parameters for anchor</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/329" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/327" target="_blank" rel="noopener noreferrer">Move files that are not golden files into <code>input</code> directory</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/324" target="_blank" rel="noopener noreferrer">Update to cardano-api-8.24</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/323" target="_blank" rel="noopener noreferrer">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/322" target="_blank" rel="noopener noreferrer">create-poll, answer-poll, verify-poll: move to &#x27;babbage governance&#x27; block</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/320" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/319" target="_blank" rel="noopener noreferrer">Make <code>transaction view</code> emit JSON</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/318" target="_blank" rel="noopener noreferrer">Tidy up query command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/317" target="_blank" rel="noopener noreferrer">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/316" target="_blank" rel="noopener noreferrer">Add DRep Retirement Certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/310" target="_blank" rel="noopener noreferrer">Update to cardano api 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/309" target="_blank" rel="noopener noreferrer">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/307" target="_blank" rel="noopener noreferrer">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/306" target="_blank" rel="noopener noreferrer">Add certs to txbody of Conway transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/305" target="_blank" rel="noopener noreferrer">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/304" target="_blank" rel="noopener noreferrer">Add BabbageEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/303" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.2.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/300" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/299" target="_blank" rel="noopener noreferrer">Reduce constraint usage with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/297" target="_blank" rel="noopener noreferrer">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/296" target="_blank" rel="noopener noreferrer">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/294" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/293" target="_blank" rel="noopener noreferrer">Require conway onwards for voting</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/292" target="_blank" rel="noopener noreferrer">Add witness committee cold key</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/291" target="_blank" rel="noopener noreferrer">Fix CHaP failure due to haddock issue</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/290" target="_blank" rel="noopener noreferrer">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/289" target="_blank" rel="noopener noreferrer">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/288" target="_blank" rel="noopener noreferrer">Release 8.24.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/287" target="_blank" rel="noopener noreferrer">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/286" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/284" target="_blank" rel="noopener noreferrer">conway drep registration: expose ledger anchor parameter</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/282" target="_blank" rel="noopener noreferrer">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/281" target="_blank" rel="noopener noreferrer">Rename eon functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/280" target="_blank" rel="noopener noreferrer">New <code>AnyEraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/279" target="_blank" rel="noopener noreferrer">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/278" target="_blank" rel="noopener noreferrer">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/277" target="_blank" rel="noopener noreferrer">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/276" target="_blank" rel="noopener noreferrer">Release 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/275" target="_blank" rel="noopener noreferrer">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5497" target="_blank" rel="noopener noreferrer">bump cardano-api to 8.25.2</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5491" target="_blank" rel="noopener noreferrer">Remove unused code in cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-10-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-11-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-06-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#cardano-cli" class="table-of-contents__link toc-highlight">cardano-cli</a></li><li><a href="#cardano-api" class="table-of-contents__link toc-highlight">cardano-api</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">cardano-node</a></li><li><a href="#cardano-testnet" class="table-of-contents__link toc-highlight">cardano-testnet</a></li><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; project maintenance</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href="https://github.com/input-output-hk/mithril/issues/1282" target="_blank" rel="noopener noreferrer">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-11-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-13-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-10-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team&#x27;s primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project&#x27;s structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-15-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-13-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to
+testing. For this reason there is a very little amount features that are reported this
+time aorund. Notable Conway related changes are a specialized ledger query for getting
+Constitutional Committee state and prevention of submitting proposal procedures that have
+no valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip
+serialization. As a result of this extra testing a bug in Conway Genesis serialization
+was eliminated.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3768" target="_blank" rel="noopener noreferrer">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3781" target="_blank" rel="noopener noreferrer">pull-3781</a> - CommitteeState query</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-and-releasing">Integration and releasing<a class="hash-link" href="#integration-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3774" target="_blank" rel="noopener noreferrer">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3770" target="_blank" rel="noopener noreferrer">pull-3770</a> - cabal.project: Bump index states</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3778" target="_blank" rel="noopener noreferrer">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3769" target="_blank" rel="noopener noreferrer">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3783" target="_blank" rel="noopener noreferrer">pull-3783</a> - Update TranslationInstance.hs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3775" target="_blank" rel="noopener noreferrer">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3793" target="_blank" rel="noopener noreferrer">pull-3793</a> - Fix sums with negative RHS.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-13-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-13-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway-era" class="table-of-contents__link toc-highlight">Conway era</a></li><li><a href="#integration-and-releasing" class="table-of-contents__link toc-highlight">Integration and releasing</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href="https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href="https://github.com/input-output-hk/cardano-parts/pull/16" target="_blank" rel="noopener noreferrer">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-parts/pull/15" target="_blank" rel="noopener noreferrer">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-playground/pull/3" target="_blank" rel="noopener noreferrer">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href="https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-15T00:00:00.000Z" itemprop="datePublished">October 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-46">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22" target="_blank" rel="noopener noreferrer">sprint 46</a><a class="hash-link" href="#high-level-overview-of-sprint-46" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We diagnosed the performance regression of the new design. The work on
+<code>typed-protocols</code> will be postponed.  For more details see the
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4691" target="_blank" rel="noopener noreferrer">PR</a> which updates the <code>demo-ping-pong</code> and
+<code>demo-chain-sync</code> applications.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We made progress in review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4644" target="_blank" rel="noopener noreferrer">ouroboros-network#4644</a>, which simplifies the
+peer sharing and fixes the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4642" target="_blank" rel="noopener noreferrer">ouroboros-network#4642</a> issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We reviewed the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a> PR which inspects all the uses of
+<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-15-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-18-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-13-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-46" class="table-of-contents__link toc-highlight">High-level overview of sprint 46</a><ul><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li><li><a href="#towards-typed-protocols-0200" class="table-of-contents__link toc-highlight">Towards Typed Protocols 0.2.0.0</a></li><li><a href="#peer-sharing" class="table-of-contents__link toc-highlight">Peer Sharing</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech Debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330" target="_blank" rel="noopener noreferrer">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href="https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069" target="_blank" rel="noopener noreferrer">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">422</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> finished his cycle as release engineer. Node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">4251</a>).</li><li>We prepared the integration of <a href="https://github.com/input-output-hk/cardano-node/pull/5502" target="_blank" rel="noopener noreferrer">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">issue</a>).</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-18-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-20-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-18-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#utxo-hd" class="table-of-contents__link toc-highlight">UTxO-HD</a></li><li><a href="#genesis" class="table-of-contents__link toc-highlight">Genesis</a></li><li><a href="#support" class="table-of-contents__link toc-highlight">Support</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href="https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq" target="_blank" rel="noopener noreferrer">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1298" target="_blank" rel="noopener noreferrer">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href="https://github.com/input-output-hk/mithril/issues/1292" target="_blank" rel="noopener noreferrer">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-18-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-18-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-15-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-20T00:00:00.000Z" itemprop="datePublished">October 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API&#x27;s submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.
+This improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.
+This effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href="https://github.com/input-output-hk/hydra/pull/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li><a href="https://github.com/input-output-hk/hydra/issues/1120" target="_blank" rel="noopener noreferrer">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href="https://github.com/input-output-hk/hydra/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href="https://github.com/input-output-hk/hydra/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href="https://github.com/input-output-hk/hydra/pull/1121" target="_blank" rel="noopener noreferrer">#1121</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-20-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-24-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-18-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-24T00:00:00.000Z" itemprop="datePublished">October 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-10-11 - 2023-10-24</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/394" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/393" target="_blank" rel="noopener noreferrer">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/390" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/389" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/380" target="_blank" rel="noopener noreferrer">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/379" target="_blank" rel="noopener noreferrer">drep registration-certificate: add a golden test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/378" target="_blank" rel="noopener noreferrer">Disambiguate treasury withdrawal flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/375" target="_blank" rel="noopener noreferrer">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/374" target="_blank" rel="noopener noreferrer">Add <code>conway governance action view</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/372" target="_blank" rel="noopener noreferrer">Ch/clearer anchor flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/371" target="_blank" rel="noopener noreferrer">Command argument types for <code>transaction</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/370" target="_blank" rel="noopener noreferrer">Remove eras&#x27; constitution-hash</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/368" target="_blank" rel="noopener noreferrer">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/367" target="_blank" rel="noopener noreferrer">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/366" target="_blank" rel="noopener noreferrer">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/365" target="_blank" rel="noopener noreferrer"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/364" target="_blank" rel="noopener noreferrer">Command argument types for governance key commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/363" target="_blank" rel="noopener noreferrer">Add test of voting using a cc hot key</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/338" target="_blank" rel="noopener noreferrer">Add Show instance for FoldBlocksError</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/336" target="_blank" rel="noopener noreferrer">Upgrade typed-protocols to 1.1.1</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/332" target="_blank" rel="noopener noreferrer">Improved validity range handling</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/330" target="_blank" rel="noopener noreferrer">Delete <code>AlonzoEraOnly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/329" target="_blank" rel="noopener noreferrer">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/327" target="_blank" rel="noopener noreferrer">DRep extended key: add CastVerificationKeyRole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/326" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/325" target="_blank" rel="noopener noreferrer">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/324" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/323" target="_blank" rel="noopener noreferrer">Support Plutus V1 in Conway</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/322" target="_blank" rel="noopener noreferrer">Parameterize GovernanceAction on era </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/320" target="_blank" rel="noopener noreferrer">Support DRep extended keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/317" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/314" target="_blank" rel="noopener noreferrer">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/313" target="_blank" rel="noopener noreferrer">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/312" target="_blank" rel="noopener noreferrer">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5515" target="_blank" rel="noopener noreferrer">Factor out file creation for SPO</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5504" target="_blank" rel="noopener noreferrer">Tracer documentation generation enhacements </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-24-node-cli-api.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-25-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-20-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a><ul><li><a href="#cardano-cli" class="table-of-contents__link toc-highlight">cardano-cli</a></li><li><a href="#cardano-api" class="table-of-contents__link toc-highlight">cardano-api</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">cardano-node</a></li><li><a href="#cardano-testnet" class="table-of-contents__link toc-highlight">cardano-testnet</a></li><li><a href="#docs" class="table-of-contents__link toc-highlight">docs</a></li><li><a href="#ci--project-maintenance" class="table-of-contents__link toc-highlight">CI &amp; project maintenance</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1133" target="_blank" rel="noopener noreferrer">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1184" target="_blank" rel="noopener noreferrer">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href="https://github.com/input-output-hk/mithril/issues/1306" target="_blank" rel="noopener noreferrer">#1306</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-25-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-27-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-24-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid
+overwriting existing keys, and resolved issues related to the rewritten
+<code>hydra-tui</code>. They also worked on a \&quot;dirt road\&quot; implementation for the
+\&quot;Ignored init tx\&quot; notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including
+implementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check
+out our Masterclass about \&quot;Developing Hydra + Mithril for Scaling Cardano\&quot; on
+Friday, November 3 at 14:00-15:30 local time in the \&quot;Al Dar\&quot; room!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys
+<a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Finalized cardano summit preparation
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">link to
+repository</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-01-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-27-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-47">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22" target="_blank" rel="noopener noreferrer">sprint 47</a><a class="hash-link" href="#high-level-overview-of-sprint-47" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests">CI / Tests<a class="hash-link" href="#ci--tests" title="Direct link to heading">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>
+function used for testing codecs which triggered out of memory manager (OOM) on
+some platforms (<a href="https://github.com/input-output-hk/typed-protocols/pull/43" target="_blank" rel="noopener noreferrer">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI
+<code>timeouts</code> (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680" target="_blank" rel="noopener noreferrer">connection-manager-fix</a>).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="keepalive-client">KeepAlive client<a class="hash-link" href="#keepalive-client" title="Direct link to heading">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed
+by Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>), <a href="https://github.com/input-output-hk/ouroboros-network/issues/4689" target="_blank" rel="noopener noreferrer">ouroboros-network#4689</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois">Galois<a class="hash-link" href="#galois" title="Direct link to heading">​</a></h3><p>We merged two large PRs prepared by <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4660" target="_blank" rel="noopener noreferrer">inspect <code>error</code> call sites</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4663" target="_blank" rel="noopener noreferrer">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance-cnsa">Cardano Network Service Assurance (CNSA)<a class="hash-link" href="#cardano-network-service-assurance-cnsa" title="Direct link to heading">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new &quot;CSNA analysis&quot; that provides, for each sampler node, the
+block download throughput in bytes over time.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-chap-release">New CHaP Release<a class="hash-link" href="#new-chap-release" title="Direct link to heading">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/547" target="_blank" rel="noopener noreferrer">chap#547</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests-1">CI / Tests<a class="hash-link" href="#ci--tests-1" title="Direct link to heading">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of
+<code>IOSim</code> traces without retaining them, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696" target="_blank" rel="noopener noreferrer">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test
+artefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for
+<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to
+run concurrently, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/4623" target="_blank" rel="noopener noreferrer">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4694" target="_blank" rel="noopener noreferrer">inbound-governor: connection leak</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4607" target="_blank" rel="noopener noreferrer">connection-manager: assertion failure</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4605" target="_blank" rel="noopener noreferrer">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production
+code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release-process">Release Process<a class="hash-link" href="#release-process" title="Direct link to heading">​</a></h3><p>We updated our release process &amp; associated scripts, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4705" target="_blank" rel="noopener noreferrer">ouroboros-network#4705</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-27-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-27-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-47" class="table-of-contents__link toc-highlight">High-level overview of sprint 47</a><ul><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li><li><a href="#ci--tests" class="table-of-contents__link toc-highlight">CI / Tests</a></li><li><a href="#keepalive-client" class="table-of-contents__link toc-highlight">KeepAlive client</a></li><li><a href="#galois" class="table-of-contents__link toc-highlight">Galois</a></li><li><a href="#cardano-network-service-assurance-cnsa" class="table-of-contents__link toc-highlight">Cardano Network Service Assurance (CNSA)</a></li><li><a href="#new-chap-release" class="table-of-contents__link toc-highlight">New CHaP Release</a></li></ul></li><li><a href="#more-details" class="table-of-contents__link toc-highlight">More details</a><ul><li><a href="#ci--tests-1" class="table-of-contents__link toc-highlight">CI / Tests</a></li><li><a href="#release-process" class="table-of-contents__link toc-highlight">Release Process</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href="https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href="https://github.com/input-output-hk/cardano-parts/pull/17" target="_blank" rel="noopener noreferrer">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href="https://github.com/input-output-hk/cardano-playground/pull/4" target="_blank" rel="noopener noreferrer">cardano-playground-pull-4</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-10-27-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-25-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#capkgs" class="table-of-contents__link toc-highlight">Capkgs</a></li><li><a href="#cardano-parts" class="table-of-contents__link 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">survivable eclipse duration</a>, which is part of our work <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/427" target="_blank" rel="noopener noreferrer">supporting Genesis delivery</a>, and how to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">improve the handling of blocks from the future</a>.
+Regarding the UTxO-HD branch, we managed to run a node with <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.
+We also <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122" target="_blank" rel="noopener noreferrer">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-01-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-08-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-01-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the &#x27;devnet&#x27; faster and fixed some regressions in the Mithril client CLI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1321" target="_blank" rel="noopener noreferrer">#1321</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-01-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-01-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-10-27-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and
+tooling that we use for testing Ledger. Major Conway bugs that were discovered and
+squashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an
+ordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate
+certificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a
+serious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on
+expired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized &quot;Imp&quot; test library that allows us
+writing concise stateful unit tests for verifying the Ledger logic. Serious progress has
+been made on the conformance testing, where we can now interface with Haskell generated
+code from the Agda specification. Serialization testing has been extended to increase
+binary conformance coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3808" target="_blank" rel="noopener noreferrer">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3801" target="_blank" rel="noopener noreferrer">pull-3801</a> - Fix epoch rule and tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3803" target="_blank" rel="noopener noreferrer">pull-3803</a> - Fix delegation validation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3759" target="_blank" rel="noopener noreferrer">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3779" target="_blank" rel="noopener noreferrer">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3794" target="_blank" rel="noopener noreferrer">pull-3794</a> - Added anchor to resign certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3797" target="_blank" rel="noopener noreferrer">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3848" target="_blank" rel="noopener noreferrer">pull-3848</a> - Plutus modules restructure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3840" target="_blank" rel="noopener noreferrer">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3856" target="_blank" rel="noopener noreferrer">pull-3856</a> - Add governance related ledger events</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3825" target="_blank" rel="noopener noreferrer">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3831" target="_blank" rel="noopener noreferrer">pull-3831</a> - Treasury withdrawal fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3791" target="_blank" rel="noopener noreferrer">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3836" target="_blank" rel="noopener noreferrer">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3846" target="_blank" rel="noopener noreferrer">pull-3846</a> - Revert argument order swap.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3782" target="_blank" rel="noopener noreferrer">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3842" target="_blank" rel="noopener noreferrer">pull-3842</a> - Imp improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3844" target="_blank" rel="noopener noreferrer">pull-3844</a> - Add mappings to Agda types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3853" target="_blank" rel="noopener noreferrer">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3809" target="_blank" rel="noopener noreferrer">pull-3809</a> - CDDL roundtrip testing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3832" target="_blank" rel="noopener noreferrer">pull-3832</a> - Treasury withdrawals tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3839" target="_blank" rel="noopener noreferrer">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3841" target="_blank" rel="noopener noreferrer">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3843" target="_blank" rel="noopener noreferrer">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3795" target="_blank" rel="noopener noreferrer">pull-3795</a> - Bump plutus to 1.15</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3798" target="_blank" rel="noopener noreferrer">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3799" target="_blank" rel="noopener noreferrer">pull-3799</a> - Changes needed for 8.6 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3807" target="_blank" rel="noopener noreferrer">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3819" target="_blank" rel="noopener noreferrer">pull-3819</a> - Fixups needed for a release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3829" target="_blank" rel="noopener noreferrer">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3830" target="_blank" rel="noopener noreferrer">pull-3830</a> - Bump aeson to 2.2</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3833" target="_blank" rel="noopener noreferrer">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3828" target="_blank" rel="noopener noreferrer">pull-3828</a> - Add changelog for node release 8.6</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-08-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-09-db-sync"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-08-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway" class="table-of-contents__link toc-highlight">Conway</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the &#x27;release-mainnet&#x27; aggregator.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href="https://github.com/input-output-hk/mithril/issues/1322" target="_blank" rel="noopener noreferrer">#1322</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-08-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-08-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-01-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">DB-sync Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix
+tags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.
+We have completed the initial implementation for the bootstrap instance objective.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1558" target="_blank" rel="noopener noreferrer">#1558</a></li><li>Fix of the committee key size
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1544" target="_blank" rel="noopener noreferrer">#1544</a></li><li>Workaround a ledger issue with unregistered pools
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1542" target="_blank" rel="noopener noreferrer">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1539" target="_blank" rel="noopener noreferrer">#1539</a></li><li>Rename offline to offchain
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1533" target="_blank" rel="noopener noreferrer">#1533</a></li><li>Transfer existing tests to Conway era
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1529" target="_blank" rel="noopener noreferrer">#1529</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1547" target="_blank" rel="noopener noreferrer">#1547</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-09-db-sync.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-10-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-08-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published
+the monthly report for October, providing updates on project developments. The
+team delivered a presentation and workshop at the Cardano Summit, contributing
+to community engagement. They implemented a \&quot;dirt road\&quot; solution for the
+\&quot;Ignored init tx\&quot; notification and moved the <code>hydra-poll</code> example project to a
+dedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool
+for Hydra Heads, updated the toolchain to GHC 9.6.3, and made various
+improvements to tooling and code formatting. They addressed specific issues,
+such as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the
+rewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test
+suite by fetching network configurations dynamically. Lastly, they actively
+reviewed pull requests and architectural decision records from the community,
+including contributions from SundaeSwap. An experiment, the Hydra tally, was
+completed and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Published the monthly <a href="https://hydra.family/head-protocol/monthly/2023-10" target="_blank" rel="noopener noreferrer">report for
+october</a></li><li>Given a presentation / workshop at the Cardano summit
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a> (without
+stateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a
+dedicated
+<a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling
+and code formatting
+<a href="https://github.com/input-output-hk/hydra/pull/1135" target="_blank" rel="noopener noreferrer">#1135</a><a href="https://github.com/input-output-hk/hydra/pull/1152" target="_blank" rel="noopener noreferrer">#1152</a><a href="https://github.com/input-output-hk/hydra/pull/1151" target="_blank" rel="noopener noreferrer">#1151</a><a href="https://github.com/input-output-hk/hydra/pull/1154" target="_blank" rel="noopener noreferrer">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing
+keys <a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Fetch network configurations instead of packaging them into
+hydra-cluster (smoke) test suite
+<a href="https://github.com/input-output-hk/hydra/pull/1156" target="_blank" rel="noopener noreferrer">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)
+<a href="https://github.com/input-output-hk/hydra/pull/1118" target="_blank" rel="noopener noreferrer">#1118</a><a href="https://github.com/input-output-hk/hydra/pull/1157" target="_blank" rel="noopener noreferrer">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor
+existing code towards more stateless observation</li><li>Start work on incremental decommits</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-10-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-14-node-cli-api"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-10-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href="https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href="https://github.com/input-output-hk/cardano-parts/pull/18" target="_blank" rel="noopener noreferrer">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href="https://github.com/input-output-hk/cardano-parts/pull/19" target="_blank" rel="noopener noreferrer">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href="https://github.com/input-output-hk/cardano-parts/pull/21" target="_blank" rel="noopener noreferrer">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/5" target="_blank" rel="noopener noreferrer">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migration to play: <a href="https://github.com/input-output-hk/iohk-nix/pull/561" target="_blank" rel="noopener noreferrer">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-10-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-10-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-09-db-sync"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">DB-sync Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#capkgs" class="table-of-contents__link toc-highlight">Capkgs</a></li><li><a href="#cardano-parts" class="table-of-contents__link 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-14T00:00:00.000Z" itemprop="datePublished">November 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h1>2023-11-01 - 2023-11-14</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/451" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (6/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/448" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (5/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/444" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/443" target="_blank" rel="noopener noreferrer">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/441" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/436" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/435" target="_blank" rel="noopener noreferrer">Update to <code>cardano-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/434" target="_blank" rel="noopener noreferrer">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/432" target="_blank" rel="noopener noreferrer">Release 8.14.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/430" target="_blank" rel="noopener noreferrer">Upgrade cardano-api to 8.30</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/428" target="_blank" rel="noopener noreferrer">Command types for <code>node</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/427" target="_blank" rel="noopener noreferrer">Split governance <code>MIRTransferConstructor</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/426" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/425" target="_blank" rel="noopener noreferrer">Command argument types for <code>drep</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/421" target="_blank" rel="noopener noreferrer">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/419" target="_blank" rel="noopener noreferrer">Command arguments types for stake-pool commands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/364" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/360" target="_blank" rel="noopener noreferrer">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/358" target="_blank" rel="noopener noreferrer">Protocol version change is not common to all versions anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/355" target="_blank" rel="noopener noreferrer">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/354" target="_blank" rel="noopener noreferrer">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/353" target="_blank" rel="noopener noreferrer">Modify foldBlocks to recurse on ledger events </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/352" target="_blank" rel="noopener noreferrer">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/351" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5525" target="_blank" rel="noopener noreferrer">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).
+This <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.
+However, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.
+On the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.
+Therefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/434" target="_blank" rel="noopener noreferrer">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href="https://github.com/jasagredo" target="_blank" rel="noopener noreferrer">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-15-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-16-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-15-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Mithril Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the &#x27;release-mainnet&#x27; aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1343" target="_blank" rel="noopener noreferrer">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href="https://github.com/input-output-hk/mithril/issues/1235" target="_blank" rel="noopener noreferrer">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-15-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-15-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-14-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-48">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22" target="_blank" rel="noopener noreferrer">sprint 48</a><a class="hash-link" href="#high-level-overview-of-sprint-48" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing bootstrap peers, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ioclasses--iosim">IOClasses / IOSim<a class="hash-link" href="#ioclasses--iosim" title="Direct link to heading">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.
+The recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href="https://github.com/input-output-hk/io-sim/pull/117" target="_blank" rel="noopener noreferrer">io-sim#117</a>.
+We released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href="https://github.com/input-output-hk/io-sim/pull/119" target="_blank" rel="noopener noreferrer">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href="https://github.com/input-output-hk/io-sim/pull/123" target="_blank" rel="noopener noreferrer">io-sim#123</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4707" target="_blank" rel="noopener noreferrer">ouroboros-network#4707</a>.
+We continued reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4625" target="_blank" rel="noopener noreferrer">ouroboros-network#4625</a> PR, which refactors
+<code>RootPeersDNS</code> module.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-16-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-17-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; Tracing Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-15-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview-of-sprint-48" class="table-of-contents__link toc-highlight">High-level overview of sprint 48</a><ul><li><a href="#bootstrap-peers" class="table-of-contents__link toc-highlight">Bootstrap Peers</a></li><li><a href="#ioclasses--iosim" class="table-of-contents__link toc-highlight">IOClasses / IOSim</a></li><li><a href="#tech-debt" class="table-of-contents__link toc-highlight">Tech debt</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed
+misleading errors regarding collect com transactions, resolved a security
+advisory (CVE-2023-42806), and simplified the Hydra Head protocol by using
+inline datums. The team also tackled minor inconsistencies in specifications and
+implementation, documented reasons for potentially dropped close transactions by
+the cardano-node, and collaborated with SundaeLabs on an offline mode for
+<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about
+incremental de-/commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href="https://github.com/input-output-hk/hydra/issues/839" target="_blank" rel="noopener noreferrer">#839</a></li><li>Addressed security advisory <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a> in PR <a href="https://github.com/input-output-hk/hydra/pull/1161" target="_blank" rel="noopener noreferrer">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href="https://github.com/input-output-hk/hydra/pull/1162" target="_blank" rel="noopener noreferrer">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href="https://github.com/input-output-hk/hydra/issues/1104" target="_blank" rel="noopener noreferrer">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href="https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A" target="_blank" rel="noopener noreferrer">open bugs</a></li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this scope</a></li><li>Update dependencies to prepare for Conway <a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-17-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-20-cip1694"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Initial CIP 1694 Security Analysis and Responses</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-17-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; Tracing Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags
+and mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial
+we can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we&#x27;ve been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we&#x27;ve observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we&#x27;ve seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that
+there is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>
+service on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>For future benchmarks to be built around PlutusV3, we&#x27;ve equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes
+to the execution budgets by developing specialized workloads.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure
+performance for a long service run time, we&#x27;re currently equipping the service binary with the same capability to
+emit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,
+more detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables
+our team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.
+When alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-17-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-17-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-16-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#development" class="table-of-contents__link toc-highlight">Development</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li><li><a href="#workbench" class="table-of-contents__link toc-highlight">Workbench</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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+<title data-rh="true">Initial CIP 1694 Security Analysis and Responses | Cardano Development Updates</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docusaurus_tag" content="default"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" name="docsearch:docusaurus_tag" content="default"><meta data-rh="true" property="og:title" content="Initial CIP 1694 Security Analysis and Responses | Cardano Development Updates"><meta data-rh="true" name="description" content="High level summary"><meta data-rh="true" property="og:description" content="High level summary"><meta data-rh="true" property="og:type" content="article"><meta data-rh="true" property="article:published_time" content="2023-11-20T00:00:00.000Z"><meta data-rh="true" property="article:author" content="https://github.com/kevinhammond"><meta data-rh="true" property="article:tag" content="ledger,cip1694,security"><link data-rh="true" rel="icon" href="/cardano-updates/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694" hreflang="en"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694" hreflang="x-default"><link rel="alternate" type="application/rss+xml" href="/cardano-updates/rss.xml" title="Cardano Updates Feed RSS Feed">
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Initial CIP 1694 Security Analysis and Responses</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-20T00:00:00.000Z" itemprop="datePublished">November 20, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule &quot;The Cardano network must always be able to produce new blocks&quot; - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a &#x27;guardrails document&#x27; in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cip-1694">cip1694</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/security">security</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-20-cip1694.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-22-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-17-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#initial-cip-1694-security-analysis-and-responses" class="table-of-contents__link toc-highlight">Initial CIP-1694 Security Analysis and Responses</a><ul><li><a href="#section-the-constitutional-committee" class="table-of-contents__link toc-highlight">Section: The constitutional committee</a></li><li><a href="#section-size-of-the-constitutional-committee" class="table-of-contents__link toc-highlight">Section: Size of the constitutional committee</a></li><li><a href="#section-terms" class="table-of-contents__link toc-highlight">Section: Terms</a></li><li><a href="#section-registered-dreps" class="table-of-contents__link toc-highlight">Section: Registered DReps</a></li><li><a href="#section-ratification" class="table-of-contents__link toc-highlight">Section: Ratification</a></li><li><a href="#section-content" class="table-of-contents__link toc-highlight">Section: Content</a></li><li><a href="#section-protocol-parameter-groups" class="table-of-contents__link toc-highlight">Section: Protocol Parameter groups</a></li><li><a href="#section-votes" class="table-of-contents__link toc-highlight">Section: Votes</a></li><li><a href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" class="table-of-contents__link toc-highlight">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes</a></li><li><a href="#section-changes-post-edinburgh-workshop-july-2023" class="table-of-contents__link toc-highlight">Section: Changes post Edinburgh workshop (July 2023)</a></li><li><a href="#section-reduced-deposits-for-some-government-actions" class="table-of-contents__link toc-highlight">Section: Reduced deposits for some government actions</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-22T00:00:00.000Z" itemprop="datePublished">November 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of
+CDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not
+previously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no
+longer allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting
+with Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3858" target="_blank" rel="noopener noreferrer">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3860" target="_blank" rel="noopener noreferrer">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3864" target="_blank" rel="noopener noreferrer">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3859" target="_blank" rel="noopener noreferrer">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3867" target="_blank" rel="noopener noreferrer">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3869" target="_blank" rel="noopener noreferrer">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3863" target="_blank" rel="noopener noreferrer">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3861" target="_blank" rel="noopener noreferrer">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3875" target="_blank" rel="noopener noreferrer">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3876" target="_blank" rel="noopener noreferrer">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3884" target="_blank" rel="noopener noreferrer">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3868" target="_blank" rel="noopener noreferrer">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3792" target="_blank" rel="noopener noreferrer">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3885" target="_blank" rel="noopener noreferrer">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3886" target="_blank" rel="noopener noreferrer">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3854" target="_blank" rel="noopener noreferrer">pull-3854</a> - Integration work for node 8.7.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3872" target="_blank" rel="noopener noreferrer">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3871" target="_blank" rel="noopener noreferrer">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3874" target="_blank" rel="noopener noreferrer">pull-3874</a> - Post release changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3880" target="_blank" rel="noopener noreferrer">pull-3880</a> - Remove generic-monoid dependency</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3887" target="_blank" rel="noopener noreferrer">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-22-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-24-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-22-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway" class="table-of-contents__link toc-highlight">Conway</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1326" target="_blank" rel="noopener noreferrer">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href="https://github.com/input-output-hk/mithril/issues/1352" target="_blank" rel="noopener noreferrer">#1352</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-22-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-22-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-20-cip1694"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Initial CIP 1694 Security Analysis and Responses</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-overview" class="table-of-contents__link toc-highlight">High level overview</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team spent significant time opening a head among
+themselves on <code>mainnet</code> using the release candidate, revealing and
+addressing lurking bugs such as
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a>. Also
+required was this change to dynamically calculate the min utxo value
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, a
+necessary adjustment following the switch to inline datums. The team
+engaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent
+changes and collaborated on drafting feature ideas, including providing
+<a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway support</a>
+for the Hydra roadmap. As part of ongoing improvements, they
+experimented with writing the specification in markdown instead of
+LaTex.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a> in the
+release candidate</li><li>Calculate the min utxo value instead of hard-coding it
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, which is
+needed since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss
+recent changes and way forward</li><li>Drafted features ideas to provide <a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway
+support</a> on the
+Hydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this
+scope</a></li><li>Complete tidying up chain layer via stateless observation changes in
+hydra-node
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway
+<a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#<!-- -->1114</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-24-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-29-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-24-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href="https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href="https://github.com/input-output-hk/cardano-node/pull/5537" target="_blank" rel="noopener noreferrer">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn&#x27;t desired</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/20" target="_blank" rel="noopener noreferrer">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster&#x27;s static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/6" target="_blank" rel="noopener noreferrer">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster&#x27;s static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offchain-metadata-tools">Offchain-metadata-tools<a class="hash-link" href="#offchain-metadata-tools" title="Direct link to heading">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href="https://github.com/input-output-hk/offchain-metadata-tools/pull/61" target="_blank" rel="noopener noreferrer">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-24-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-11-24-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-22-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#lower-level-summary" class="table-of-contents__link toc-highlight">Lower level summary</a><ul><li><a href="#capkgs" class="table-of-contents__link toc-highlight">Capkgs</a></li><li><a href="#cardano-node" class="table-of-contents__link toc-highlight">Cardano-node</a></li><li><a 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-11-29T00:00:00.000Z" itemprop="datePublished">November 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team implemented and tested a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/525" target="_blank" rel="noopener noreferrer">patch</a> that does not propagate future headers.
+It is under review, and we expect it can be released in the next Cardano node version.
+On the UTxO-HD front, we <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/510" target="_blank" rel="noopener noreferrer">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.
+With this prototype finished we can start integrating the rest of the code.
+We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/513" target="_blank" rel="noopener noreferrer">investigated</a> the unexpected performance degradation observed when acquiring the block context.
+We also <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre" target="_blank" rel="noopener noreferrer">released Cardano node 8.7.0</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-29-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-12-01-hydra"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Hydra Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-29-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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They also released a new distribution, <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Release of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released" target="_blank" rel="noopener noreferrer">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href="https://github.com/input-output-hk/mithril/issues/1325" target="_blank" rel="noopener noreferrer">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1375" target="_blank" rel="noopener noreferrer">#1375</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-29-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Hydra Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,
+featuring demonstrations and the preparation of the monthly report. They
+addressed flakiness in tests and enhanced the logs json schema,
+improving overall test reliability. Additionally, the team successfully
+built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform
+support. They further improved the network configuration by detecting
+incompatible persisted states, contributing to overall system
+robustness. Finally, the team released version 0.14.0, highlighting
+their commitment to delivering regular updates and improvements.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Monthly Review
+<a href="https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM" target="_blank" rel="noopener noreferrer">meeting</a>
+packed with demonstrations and prepared monthly report
+<a href="https://github.com/input-output-hk/hydra/pull/1189" target="_blank" rel="noopener noreferrer">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema
+<a href="https://github.com/input-output-hk/hydra/pull/1188" target="_blank" rel="noopener noreferrer">#<!-- -->1188</a><a href="https://github.com/input-output-hk/hydra/issues/1190" target="_blank" rel="noopener noreferrer">#<!-- -->1190</a><a href="https://github.com/input-output-hk/hydra/pull/1192" target="_blank" rel="noopener noreferrer">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI
+<a href="https://github.com/input-output-hk/hydra/pull/1182" target="_blank" rel="noopener noreferrer">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted
+states <a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-01-hydra.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-12-04-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; Tracing Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-11-29-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High-level summary</a></li><li><a href="#what-did-the-team-achieve-this-week" class="table-of-contents__link toc-highlight">What did the team achieve this week</a></li><li><a href="#what-are-the-goals-of-next-week" class="table-of-contents__link toc-highlight">What are the goals of next week</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; Tracing Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-04T00:00:00.000Z" itemprop="datePublished">December 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We&#x27;ve measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we&#x27;ve run system integration level benchmarks in the Conway era for the first time, on the same node version.
+Only Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.
+Currently, we&#x27;re looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we&#x27;re interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we&#x27;ve
+improved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The new tracing system is currently receiving usability improvements as we&#x27;re reworking the output of several trace messages.
+Additionally, we&#x27;re setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;ve been working on adapting various benchmarking workloads, which are defined by our workbench&#x27;s profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we&#x27;re implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-04-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-12-06-mithril"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Mithril Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-12-01-hydra"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Hydra Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-overview" class="table-of-contents__link toc-highlight">Low level overview</a><ul><li><a href="#benchmarking" class="table-of-contents__link toc-highlight">Benchmarking</a></li><li><a href="#development" class="table-of-contents__link toc-highlight">Development</a></li><li><a href="#infrastructure" class="table-of-contents__link toc-highlight">Infrastructure</a></li><li><a href="#tracing" class="table-of-contents__link toc-highlight">Tracing</a></li><li><a href="#nomad-backend" class="table-of-contents__link toc-highlight">Nomad backend</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-06T00:00:00.000Z" itemprop="datePublished">December 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway
+conformance testing working. We are now able to generate random valid data with the help
+of constraint based testing framework, apply that data to Conway Ledger rules and verify
+that the output matches to the one produced by the executable version of the Formal Ledger
+Specification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get
+Constitutional Committee query is complete and tested. Various improvements to the
+testing tools. Addition of more test cases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3888" target="_blank" rel="noopener noreferrer">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3902" target="_blank" rel="noopener noreferrer">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3855" target="_blank" rel="noopener noreferrer">pull-3855</a> - Remove unreachable proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3903" target="_blank" rel="noopener noreferrer">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3878" target="_blank" rel="noopener noreferrer">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3896" target="_blank" rel="noopener noreferrer">pull-3896</a> - Fix Brute force failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3904" target="_blank" rel="noopener noreferrer">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3907" target="_blank" rel="noopener noreferrer">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3883" target="_blank" rel="noopener noreferrer">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3909" target="_blank" rel="noopener noreferrer">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3908" target="_blank" rel="noopener noreferrer">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3912" target="_blank" rel="noopener noreferrer">pull-3912</a> - Removed call to tail, and the <!-- -->&#x27;<!-- -->watchPulser<!-- -->&#x27;<!-- --> test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3852" target="_blank" rel="noopener noreferrer">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3891" target="_blank" rel="noopener noreferrer">pull-3891</a> - Bump plutus to 1.17</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-06-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-12-06-mithril"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Mithril Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#high-level-summary" class="table-of-contents__link toc-highlight">High level summary</a></li><li><a href="#low-level-summary" class="table-of-contents__link toc-highlight">Low level summary</a><ul><li><a href="#conway" class="table-of-contents__link toc-highlight">Conway</a></li><li><a href="#testing" class="table-of-contents__link toc-highlight">Testing</a></li><li><a href="#improvements-and-releasing" class="table-of-contents__link toc-highlight">Improvements and releasing</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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They also completed the optimization of the aggregator&#x27;s performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1173" target="_blank" rel="noopener noreferrer">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1357" target="_blank" rel="noopener noreferrer">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1385" target="_blank" rel="noopener noreferrer">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href="https://github.com/input-output-hk/mithril/issues/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href="https://github.com/input-output-hk/mithril/issues/1390" target="_blank" rel="noopener noreferrer">#1390</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-06-mithril.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/2023-12-06-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/2023-12-04-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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CLI Team Update</a></li><li><a href="/cardano-updates/2022-11-16-performance-and-tracing">November 16, 2022<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2022-11-11-crypto">November 11, 2022<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2022-11-11-hydra">November 11, 2022<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2022-11-11-ledger">November 11, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-11-11-network">November 11, 2022<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2022-11-04-hydra">November 4, 2022<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2022-11-04-mithril">November 4, 2022<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2022-10-31-open-source">November 4, 2022<!-- --> - <!-- -->Open-Source Team</a></li><li><a href="/cardano-updates/2022-11-03-embedding-quality">November 3, 2022<!-- --> - <!-- -->Embedding Quality Workstream</a></li><li><a href="/cardano-updates/2022-10-02-consensus">November 2, 2022<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2022-11-02-ledger">November 2, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-11-02-node-cli-api">November 2, 2022<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2022-11-02-release">November 2, 2022<!-- --> - <!-- -->Node Release Team Update</a></li><li><a href="/cardano-updates/2022-11-02-system-test">November 2, 2022<!-- --> - <!-- -->System Test Team Update</a></li><li><a href="/cardano-updates/2022-11-01-db-sync">November 1, 2022<!-- --> - <!-- -->DB Sync Team Update</a></li><li><a href="/cardano-updates/2022-10-28-hydra">October 28, 2022<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2022-10-28-network">October 28, 2022<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2022-10-28-performance-and-tracing">October 28, 2022<!-- --> - <!-- -->Performance &amp; Tracing Team Update</a></li><li><a href="/cardano-updates/2022-08-12-sre">October 28, 2022<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2022-10-27-crypto">October 27, 2022<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2022-10-21-hydra">October 21, 2022<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2022-10-19-node-cli-api">October 19, 2022<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2022-10-18-consensus">October 18, 2022<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2022-10-14-hydra">October 14, 2022<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2022-10-14-ledger">October 14, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-10-05-consensus">October 5, 2022<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2022-10-04-db-sync">October 4, 2022<!-- --> - <!-- -->DB Sync Team Update</a></li><li><a href="/cardano-updates/2022-10-04-node-cli-api">October 4, 2022<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2022-09-30-ledger">September 30, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-09-27-network">September 27, 2022<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2022-09-20-consensus">September 20, 2022<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2022-09-19-db-sync">September 19, 2022<!-- --> - <!-- -->DB Sync Team Update</a></li><li><a href="/cardano-updates/2022-09-16-ledger">September 16, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-09-01-ledger">September 1, 2022<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2022-08-31-consensus">August 31, 2022<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2022-08-12-network">August 12, 2022<!-- --> - <!-- -->Network Team Update</a></li></ul></div><div class="col col--4 margin-vert--lg"><h3>2023</h3><ul><li><a href="/cardano-updates/2023-12-06-ledger">December 6, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-12-06-mithril">December 6, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-12-04-performance-and-tracing">December 4, 2023<!-- --> - <!-- -->Performance &amp; Tracing Update</a></li><li><a href="/cardano-updates/2023-12-01-hydra">December 1, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-11-29-consensus">November 29, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-11-29-mithril">November 29, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-11-24-hydra">November 24, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-11-24-sre">November 24, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-11-22-ledger">November 22, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-11-22-mithril">November 22, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-11-20-cip1694">November 20, 2023<!-- --> - <!-- -->Initial CIP 1694 Security Analysis and Responses</a></li><li><a href="/cardano-updates/2023-11-17-hydra">November 17, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-11-17-performance-and-tracing">November 17, 2023<!-- --> - <!-- -->Performance &amp; Tracing Update</a></li><li><a href="/cardano-updates/2023-11-16-network">November 16, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-11-15-consensus">November 15, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-11-15-mithril">November 15, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-11-14-node-cli-api">November 14, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-11-10-hydra">November 10, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-11-10-sre">November 10, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-11-09-db-sync">November 9, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-11-08-ledger">November 8, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-11-08-mithril">November 8, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-11-01-consensus">November 1, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-11-01-mithril">November 1, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-10-27-hydra">October 27, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-10-27-network">October 27, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-10-27-sre">October 27, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-10-25-mithril">October 25, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-10-24-node-cli-api">October 24, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-10-20-hydra">October 20, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-10-18-consensus">October 18, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-10-18-mithril">October 18, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-10-15-network">October 15, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-10-13-hydra">October 13, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-10-13-ledger">October 13, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-10-13-sre">October 13, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-10-11-mithril">October 11, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-10-10-node-cli-api">October 10, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-10-06-hydra">October 6, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-10-06-performance-and-tracing">October 6, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-10-04-consensus">October 4, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-10-04-mithril">October 4, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-10-02-network">October 2, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-09-29-goedel">September 29, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-09-29-hydra">September 29, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-09-29-ledger">September 29, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-09-29-sre">September 29, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-09-27-mithril">September 27, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-09-26-node-cli-api">September 26, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-09-22-hydra">September 22, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-09-22-performance-and-tracing">September 22, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-09-20-consensus">September 20, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-09-20-mithril">September 20, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-09-15-goedel">September 15, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-09-15-hydra">September 15, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-09-15-ledger">September 15, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-09-15-network">September 15, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-09-15-sre">September 15, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-09-14-db-sync">September 14, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-09-12-node-cli-api">September 12, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-09-08-hydra">September 8, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-09-07-mithril">September 7, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-09-07-performance-and-tracing">September 7, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-09-06-consensus">September 6, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-09-01-goedel">September 1, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-09-01-hydra">September 1, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-09-01-ledger">September 1, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-09-01-network">September 1, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-09-01-sre">September 1, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-08-29-node-cli-api">August 29, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-08-28-mithril">August 28, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-08-25-hydra">August 25, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-08-24-performance-and-tracing">August 24, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-08-23-consensus">August 23, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-08-18-goedel">August 18, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-08-18-hydra">August 18, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-08-18-ledger">August 18, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-08-18-network">August 18, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-08-18-sre">August 18, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-08-17-crypto">August 17, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-08-17-db-sync">August 17, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-08-17-secp-issue">August 17, 2023<!-- --> - <!-- -->SECP bindings Security Issue Report</a></li><li><a href="/cardano-updates/2023-08-15-node-cli-api">August 15, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-08-11-hydra">August 11, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-08-11-performance-and-tracing">August 11, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-08-10-mithril">August 10, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-08-09-consensus">August 9, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-08-04-crypto">August 4, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-08-04-goedel">August 4, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-08-04-hydra">August 4, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-08-04-ledger">August 4, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-08-04-network">August 4, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-08-04-performance-and-tracing">August 4, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-08-04-sre">August 4, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-08-01-node-cli-api">August 1, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-07-31-network">July 31, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-07-28-hydra">July 28, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-07-27-mithril">July 27, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-07-26-consensus">July 26, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-07-21-hydra">July 21, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-07-21-ledger">July 21, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-07-21-sre">July 21, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-07-20-goedel">July 20, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-07-18-node-cli-api">July 18, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-07-14-hydra">July 14, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-07-13-mithril">July 13, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-07-12-consensus">July 12, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-07-12-performance-and-tracing">July 12, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-07-07-crypto">July 7, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-07-07-goedel">July 7, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-07-07-hydra">July 7, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-07-07-sre">July 7, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-07-06-developer-experience">July 6, 2023<!-- --> - <!-- -->Developer Experience Update</a></li><li><a href="/cardano-updates/2023-07-04-db-sync">July 4, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-07-04-node-cli-api">July 4, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-06-30-hydra">June 30, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-06-29-mithril">June 29, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-06-28-consensus">June 28, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-06-28-performance-and-tracing">June 28, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-06-23-goedel">June 23, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-06-23-hydra">June 23, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-06-23-network">June 23, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-06-23-sre">June 23, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-06-16-hydra">June 16, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-06-15-mithril">June 15, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-06-14-consensus">June 14, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-06-14-performance-and-tracing">June 14, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-06-12-network">June 12, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-06-09-crypto">June 9, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-06-09-developer-experience">June 9, 2023<!-- --> - <!-- -->Developer Experience Update</a></li><li><a href="/cardano-updates/2023-06-09-hydra">June 9, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-06-08-db-sync">June 8, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-06-08-goedel">June 8, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-06-08-sre">June 8, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-06-08-system-test">June 8, 2023<!-- --> - <!-- -->System Test Team Update</a></li><li><a href="/cardano-updates/2023-06-07-node-cli-api">June 7, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-06-02-hydra">June 2, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-06-01-mithril">June 1, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-05-31-consensus">May 31, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-05-31-performance-and-tracing">May 31, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-05-26-goedel">May 26, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-05-26-hydra">May 26, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-05-26-ledger">May 26, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-05-26-network">May 26, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-05-24-node-cli-api">May 24, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-05-19-hydra">May 19, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-05-17-consensus">May 17, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-05-17-mithril">May 17, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-05-17-performance-and-tracing">May 17, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-05-12-crypto">May 12, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-05-12-goedel">May 12, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-05-12-hydra">May 12, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-05-12-network">May 12, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-05-05-ledger">May 5, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-05-05-node-cli-api">May 5, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-05-04-mithril">May 4, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-05-03-consensus">May 3, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-05-03-performance-and-tracing">May 3, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-05-01-db-sync">May 1, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-04-28-crypto">April 28, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-04-28-goedel">April 28, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-04-28-network">April 28, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-04-27-hydra">April 27, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-04-21-hydra">April 21, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-04-21-ledger">April 21, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-04-20-mithril">April 20, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-04-20-node-cli-api">April 20, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-04-19-consensus">April 19, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-04-19-performance-and-tracing">April 19, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-04-17-ledger">April 17, 2023<!-- --> - <!-- -->Incident Report</a></li><li><a href="/cardano-updates/2023-04-14-goedel">April 14, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-04-14-hydra">April 14, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-04-07-hydra">April 7, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-04-06-mithril">April 6, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-04-05-consensus">April 5, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-04-05-node-cli-api">April 5, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-04-05-performance-and-tracing">April 5, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-03-31-crypto">March 31, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-03-31-goedel">March 31, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-03-31-hydra">March 31, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-03-31-ledger">March 31, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-03-27-system-test">March 27, 2023<!-- --> - <!-- -->System Test Team Update</a></li><li><a href="/cardano-updates/2023-03-24-hydra">March 24, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-03-23-db-sync">March 23, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-03-23-mithril">March 23, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-03-22-consensus">March 22, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-03-22-node-cli-api">March 22, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-03-22-performance-and-tracing">March 22, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-03-21-network">March 21, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-03-17-crypto">March 17, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-03-17-hydra">March 17, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-03-17-ledger">March 17, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-03-16-goedel">March 16, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-03-10-hydra">March 10, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-03-09-mithril">March 9, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-03-08-consensus">March 8, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-03-08-node-cli-api">March 8, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-03-08-performance-and-tracing">March 8, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-03-03-crypto">March 3, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-03-03-goedel">March 3, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-03-03-hydra">March 3, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-03-03-ledger">March 3, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-03-02-network">March 2, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-02-24-hydra">February 24, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-02-23-mithril">February 23, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-02-23-performance-and-tracing">February 23, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-02-22-consensus">February 22, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-02-22-node-cli-api">February 22, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-02-21-db-sync">February 21, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-02-17-crypto">February 17, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-02-17-goedel">February 17, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-02-17-hydra">February 17, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-02-17-ledger">February 17, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-02-17-network">February 17, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-02-10-hydra">February 10, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-02-09-mithril">February 9, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-02-08-consensus">February 8, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-02-08-node-cli-api">February 8, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-02-08-performance-and-tracing">February 8, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-02-03-crypto">February 3, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-02-03-goedel">February 3, 2023<!-- --> - <!-- -->Goedel Team Update</a></li><li><a href="/cardano-updates/2023-02-03-hydra">February 3, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-02-02-ledger">February 2, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-01-27-hydra">January 27, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-01-26-mithril">January 26, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-01-25-consensus">January 25, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-01-25-node-cli-api">January 25, 2023<!-- --> - <!-- -->Node API &amp; CLI Team Update</a></li><li><a href="/cardano-updates/2023-01-20-crypto">January 20, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-01-20-hydra">January 20, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-01-20-network">January 20, 2023<!-- --> - <!-- -->Network Team Update</a></li><li><a href="/cardano-updates/2023-01-20-sre">January 20, 2023<!-- --> - <!-- -->SRE Team Update</a></li><li><a href="/cardano-updates/2023-01-19-ledger">January 19, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/2023-01-14-db-sync">January 14, 2023<!-- --> - <!-- -->DB-sync Team Update</a></li><li><a href="/cardano-updates/2023-01-13-hydra">January 13, 2023<!-- --> - <!-- -->Hydra Team Update</a></li><li><a href="/cardano-updates/2023-01-13-release">January 13, 2023<!-- --> - <!-- -->Node Release Team Update</a></li><li><a href="/cardano-updates/2023-01-13-system-test">January 13, 2023<!-- --> - <!-- -->System Test Team Update</a></li><li><a href="/cardano-updates/2023-01-12-mithril">January 12, 2023<!-- --> - <!-- -->Mithril Team Update</a></li><li><a href="/cardano-updates/2023-01-11-consensus">January 11, 2023<!-- --> - <!-- -->Consensus Team Update</a></li><li><a href="/cardano-updates/2023-01-11-performance-and-tracing">January 11, 2023<!-- --> - <!-- -->Performance &amp; tracing update</a></li><li><a href="/cardano-updates/2023-01-06-crypto">January 6, 2023<!-- --> - <!-- -->Crypto Team Update</a></li><li><a href="/cardano-updates/2023-01-05-ledger">January 5, 2023<!-- --> - <!-- -->Ledger Team Update</a></li></ul></div></div></div></section></main></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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new file mode 100644
index 00000000000..a2bd5a52050
--- /dev/null
+++ b/assets/js/0048047b.7e1f75e8.js
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While this\nfixed the problems observed when running local benchmarks, it broke the\n",(0,r.kt)("inlineCode",{parentName:"li"},"ThreadNet")," tests due to concurrency issues. Therefore, we think it is wise to\nstart redesigning the UTxO HD mempool integration."),(0,r.kt)("li",{parentName:"ul"},"We did several rounds of code review on the alternative implementation of\ndiff-sequences required by the UTxO HD feature based on the idea of\nanti-diffs. This alternative implementation is close to being merged, and the\nnext step is to integrate this to the UTxO HD branch, so that we can run\nad-hoc replaying and syncing from scratch benchmarks and compare these with\nthe baseline. The micro-benchmarks we elaborated for the alternative\nimplementation show speedups of up to 4x, so we are optimistic about the\nperformance of replaying and syncing from scratch benchmarks, however it is\nimportant to notice that ",(0,r.kt)("em",{parentName:"li"},"due to the nature of UTxO HD")," we will still be\nslower than the baseline."),(0,r.kt)("li",{parentName:"ul"},"The final draft of the Genesis implementation specification is ready for\nreview."),(0,r.kt)("li",{parentName:"ul"},"We implemented a prototype for the happy path of Genesis' ChainSync Jumping\n(CSJ). The prototype is slower than the baseline, however it is not the latest\nversion of the prototype and the jump interval is very small."),(0,r.kt)("li",{parentName:"ul"},"Work on integrating Conway has ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031"},"stopped")," since\npriorities have changed."),(0,r.kt)("li",{parentName:"ul"},"We started work on benchmarking epoch-boundaries and epoch overhead\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4014"},"pr-4014"),". To this end, we made use of a modified version of our\n",(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," tool. We ran the new benchmarking setup using the Cardano\nmainnet chain, and we can see that block tick and application take\nsubstantially longer at epoch boundaries, although there are a couple of slots\nduring an epoch in which these computations take more than normal. We notified\nthe ledger team about these findings. We will use this modified version of\n",(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," to investigate the epoch overhead.")),(0,r.kt)("h1",{id:"workstreams"},"Workstreams"),(0,r.kt)("h2",{id:"utxo-hd"},"UTxO HD"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Spent quite some time investigating the root cause of the degradation in\nperformance observed in the benchmarks. We run the ",(0,r.kt)("inlineCode",{parentName:"p"},"make forge-stress"),"\nbenchmarks locally in order to debug this behavior."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Transaction batching doesn't make a notable difference in the outcome\n(considering we are using the in-memory backend).")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The mempool batching implementation required asynchronous transaction\nvalidation which is a violation of the ",(0,r.kt)("inlineCode",{parentName:"p"},"LocalTxSubmission")," protocol\ncontract and therefore if we continued on that route, the impact would\nhave been quite big.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The STM logic we implemented by using a ",(0,r.kt)("inlineCode",{parentName:"p"},"TMVar")," for the mempool internal\nstate was buggy and under certain circumstances it seemed to lock.\nReverting the mempool internal state to be stored in a ",(0,r.kt)("inlineCode",{parentName:"p"},"TVar")," seems to\nsolve this problem.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The results we get after this change look almost identical to the ones\nfrom the baseline.")))),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3997"},"The anti-diff prototype (PR\n#3997)")," has\nbeen reviewed and is close to being merged."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"A follow-up issue (",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4010"},"issue\n#4010"),")\nto integrate the anti-diff prototype in the various ",(0,r.kt)("inlineCode",{parentName:"li"},"consensus"),' packages\nwas created. A first version of the integration exists, and all tests\npass. A next step is to get some indication of the "real" performance gain\nby profiling ',(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," (or ",(0,r.kt)("inlineCode",{parentName:"li"},"cardano-node"),").")))),(0,r.kt)("h2",{id:"genesis"},"Genesis"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Final draft of the Genesis implementation specification, now up for review.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Local benchmark setup for parameter tuning via the happy path ChainSync\nJumping (CSJ) prototype (",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3987"},"Issue 3987"),")."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Context: Our Genesis design requires us to check in with a large (~20)\nnumber of servers periodically while syncing. These servers are offered\njump requests via the ChainSync protocol (hence the name), which they can\naccept or decline. If a peer declines, the Genesis rule allows us to\ndetermine whether a node actually has a better chain.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},'The "happy path" is when no peer declines a jump. 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A\npossible bug was identified. Work is ongoing to make sure the property-tests\ncover all the relevant cases."),(0,l.kt)("li",{parentName:"ul"},'We implemented and benchmarked the "anti-diff" prototype to speed up the UTxO\nHD functionality. Results show a rough speedup of ',(0,l.kt)("inlineCode",{parentName:"li"},"4x")," to ",(0,l.kt)("inlineCode",{parentName:"li"},"5.5x")," across\nseveral scenarios. Note that: ",(0,l.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html"},'"Data reported by ',(0,l.kt)("inlineCode",{parentName:"a"},"tasty-bench"),' is only of\nindicative and comparative significance."'),'.\nWe are investigating additional performance improvements. The "anti-diff"\nprototype and benchmarks are still pending code review.'),(0,l.kt)("li",{parentName:"ul"},"We elaborated a draft specification for the Genesis implementation and\n",(0,l.kt)("inlineCode",{parentName:"li"},"ChainSync")," jumping optimization.")),(0,l.kt)("h2",{id:"workstreams"},"Workstreams"),(0,l.kt)("h3",{id:"conway"},"Conway"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Integration PR of the minimal Conway era (",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3962"},"Issue #3963"),", ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3971"},"PR\n#3971"),")."),(0,l.kt)("li",{parentName:"ul"},"Discussions with Ledger revealed possible sources of confusion about which\ndata should be changed in the Conway era. As a result, a new technical debt\nissue was raised, which does not block the integration of the Conway era\n(",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3976"},"Issue #3976"),").")),(0,l.kt)("h3",{id:"utxo-hd"},"UTxO HD"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("p",{parentName:"li"},(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3954"},"Issue #3954"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests"},"branch"),": The functionality of a\nbacking store, which is the interface to the on-disk part of ledger state in\nUTxO-HD, is tested at a high level through the ",(0,l.kt)("inlineCode",{parentName:"p"},"OnDisk")," tests. However, some\nfunctionalities remain untested, e.g., reads of ranges of keys. As such, we\nhave implemented ",(0,l.kt)("inlineCode",{parentName:"p"},"quickcheck-state-machine")," tests that exercise backing stores\ndirectly. The tests are reusable for different backing store implementations\nbecause the tests are implementation-agnostic: Any backing store that conforms\nto the backing store interface can be plugged into the tests. Work is still\nongoing to label/monitor the tests, such that we can verify that interesting\ncases are being tested. Furthermore, a possible bug has been identified in the\nLMDB backing store with respect to range reads, though the bug has not been\nresolved yet.")),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("p",{parentName:"li"},(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3946"},"Issue #3946"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs"},"branch"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3882"},"PR #3882"),': The\n"anti-diff" prototype proposes an alternative approach to keeping track of\nsequences (more specifically, ',(0,l.kt)("inlineCode",{parentName:"p"},"FingerTree"),'s) of diffs. These diff sequences\nare a component of the in-memory parts of the ledger state in UTxO-HD. Since\nthe consensus code often requires the cumulative diff of a sequence of diffs,\nthe current implementation "caches" cumulative diffs of each subtree in the\ndiff sequence. This caching allows relatively fast reconstruction of the total\ncumulative diff, but this caching proved to incur a non-negligible cost: when\nwe manipulate diff sequences through splits and appends, we force re-computing\na logarithmic number of caches. This is problematic, since we often split and\nappend in consensus: we split when we flush diffs to a backing store or when\nwe roll back blocks, and we append when pushing blocks. The new approach\nshould reduce the overhead of this caching.'),(0,l.kt)("p",{parentName:"li"},'We implemented micro-benchmarks for the "anti-diff" prototype: we\nfirst generate a sequence of commands (',(0,l.kt)("inlineCode",{parentName:"p"},"Forward"),", ",(0,l.kt)("inlineCode",{parentName:"p"},"Push"),", ",(0,l.kt)("inlineCode",{parentName:"p"},"Flush"),", or\n",(0,l.kt)("inlineCode",{parentName:"p"},"Rollback"),") through a simulation, after which we measure the performance of\napplying the commands to a diff sequence. In this context, ",(0,l.kt)("inlineCode",{parentName:"p"},"Forward")," means\nforwarding of values through a diff, whereas ",(0,l.kt)("inlineCode",{parentName:"p"},"Rollback"),' means switching to\na different fork by rolling back diffs/blocks and pushing new ones.\nMoreover, we compare the performance for the two implementations: the\n"legacy" approach, and the anti-diff approach.'),(0,l.kt)("p",{parentName:"li"},"Some preliminary results were positive, but we needed to revisit the\nbenchmark's configuration to obtain more definitive results. After a\ndiscussion with @dcoutts and the consensus team about this configuration\n(e.g., number of commands generated, choice of the security parameter ",(0,l.kt)("inlineCode",{parentName:"p"},"k"),"),\nthe benchmarks should now be closer to the realistic setting. The following\nconfiguration specifies the default configuration that is used in the\nbenchmarking code:"),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Number of commands generated: ",(0,l.kt)("inlineCode",{parentName:"li"},"10_000")),(0,l.kt)("li",{parentName:"ul"},"Security parameter ",(0,l.kt)("inlineCode",{parentName:"li"},"k"),": ",(0,l.kt)("inlineCode",{parentName:"li"},"2160")),(0,l.kt)("li",{parentName:"ul"},"Number of initial backing values: ",(0,l.kt)("inlineCode",{parentName:"li"},"100")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs deleted by a push: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs inserted by a push: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs forwarded by a forward: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Probability of a large (in the range ",(0,l.kt)("inlineCode",{parentName:"li"},"[1000, 2000]"),") rollback: ",(0,l.kt)("inlineCode",{parentName:"li"},"0.05")),(0,l.kt)("li",{parentName:"ul"},"Probability of a small (in the range ",(0,l.kt)("inlineCode",{parentName:"li"},"[1, 10]"),") rollback: ",(0,l.kt)("inlineCode",{parentName:"li"},"0.95")),(0,l.kt)("li",{parentName:"ul"},"Order of commands:",(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"An equal number of forward and pushes."),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("inlineCode",{parentName:"li"},"1")," flush every ",(0,l.kt)("inlineCode",{parentName:"li"},"10")," pushes."),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("inlineCode",{parentName:"li"},"1")," rollback every ",(0,l.kt)("inlineCode",{parentName:"li"},"100")," pushes")))),(0,l.kt)("p",{parentName:"li"},"Moreover, we run four benchmark scenarios:"),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Default configuration"),(0,l.kt)("li",{parentName:"ul"},"Without rollbacks"),(0,l.kt)("li",{parentName:"ul"},"With only small rollbacks"),(0,l.kt)("li",{parentName:"ul"},"Without rollbacks, larger flushes (",(0,l.kt)("inlineCode",{parentName:"li"},"1")," flush every ",(0,l.kt)("inlineCode",{parentName:"li"},"100")," pushes)")),(0,l.kt)("h3",{parentName:"li",id:"how-to-read-results"},"How to read results"),(0,l.kt)("p",{parentName:"li"},"Note: this section uses documentation from the\n",(0,l.kt)("a",{parentName:"p",href:"https://hackage.haskell.org/package/tasty-bench"},"tasty-bench")," package to\nexplain how to read the results of running our benchmarks."),(0,l.kt)("p",{parentName:"li"},"Running a benchmark scenario gives us the following (curated) output:"),(0,l.kt)("pre",{parentName:"li"},(0,l.kt)("code",{parentName:"pre",className:"language-text"},"...\nAntiDiff:                               OK (18.27s)\n  2.527 s \xb1  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x\nLegacyDiff:                             OK (32.73s)\n  10.829 s \xb1 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory\n...\n")),(0,l.kt)("p",{parentName:"li"},"The output says that the first benchmark, which exercises the anti-diff\nprototype, was repeatedly executed for ",(0,l.kt)("inlineCode",{parentName:"p"},"18.27")," seconds (wall-clock time),\nits predicted mean CPU time was ",(0,l.kt)("inlineCode",{parentName:"p"},"2.527")," seconds and means of individual\nsamples do not often diverge from it further than ",(0,l.kt)("inlineCode",{parentName:"p"},"\xb1 47")," milliseconds\n(double standard deviation). We also configure the RTS to collect GC\nstatistics, which enables ",(0,l.kt)("inlineCode",{parentName:"p"},"tasty-bench")," to estimate and report memory usage.\nThis data is reported as per ",(0,l.kt)("inlineCode",{parentName:"p"},"RTSStats")," fields: ",(0,l.kt)("inlineCode",{parentName:"p"},"allocated_bytes"),",\n",(0,l.kt)("inlineCode",{parentName:"p"},"copied_bytes")," and ",(0,l.kt)("inlineCode",{parentName:"p"},"max_mem_in_use_bytes"),". So, the output of the first\nbenchmark says that a total of ",(0,l.kt)("inlineCode",{parentName:"p"},"2.1 GB")," of memory was allocated, that a\ntotal of ",(0,l.kt)("inlineCode",{parentName:"p"},"544 MB")," of memory were copied, and that the peak memory in usage\nwas ",(0,l.kt)("inlineCode",{parentName:"p"},"2.2 GB"),". We read the output for the second benchmark in the same way."),(0,l.kt)("p",{parentName:"li"},"Furthermore, the benchmark compares the mean CPU times for\nboth the anti-diff and legacy approaches: In this case, the mean CPU time\nfor the anti-diff approach is ",(0,l.kt)("inlineCode",{parentName:"p"},"~0.23x")," the mean CPU time for the legacy\napproach. Conversely, the mean CPU time for the legacy approach is\n",(0,l.kt)("inlineCode",{parentName:"p"},"1 / 0.23 ~= 4.35x")," the mean CPU time for the anti-diff approach. We will\ncall ",(0,l.kt)("inlineCode",{parentName:"p"},"0.23x")," the ",(0,l.kt)("em",{parentName:"p"},"improvement factor"),". We will call ",(0,l.kt)("inlineCode",{parentName:"p"},"4.35x")," the ",(0,l.kt)("em",{parentName:"p"},"speedup"),"."),(0,l.kt)("p",{parentName:"li"},"Note that these improvement factors (and reported results) are subject to\nnoise, randomness, the specific configuration parameters, and the whims\nof statistics. Data reported by ",(0,l.kt)("inlineCode",{parentName:"p"},"tasty-bench")," is only of indicative and\ncomparative significance."),(0,l.kt)("h3",{parentName:"li",id:"results"},"Results"),(0,l.kt)("p",{parentName:"li"},"For each of the 4 scenarios, we list the results of running the anti-diff and\nlegacy approaches 5 times. We run the benchmarks 5 times to get an indication\nof whether the results are similar across multiple runs. Furthermore, we\ncalculate the accompanying ",(0,l.kt)("em",{parentName:"p"},"ranges")," (if applicable) of improvement factors and\nspeedups."),(0,l.kt)("p",{parentName:"li"},"Note also the decrease in total bytes allocated and total bytes copied for\nthe anti-diff approach compared to the legacy approach."),(0,l.kt)("h4",{parentName:"li",id:"default-configuration"},"Default configuration"),(0,l.kt)("table",{parentName:"li"},(0,l.kt)("thead",{parentName:"table"},(0,l.kt)("tr",{parentName:"thead"},(0,l.kt)("th",{parentName:"tr",align:null},"Name"),(0,l.kt)("th",{parentName:"tr",align:null},"Mean CPU time"),(0,l.kt)("th",{parentName:"tr",align:null},"2*Stdev (CPU time)"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes allocated"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes copied"),(0,l.kt)("th",{parentName:"tr",align:null},"Peak memory"))),(0,l.kt)("tbody",{parentName:"table"},(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.533 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"4.7 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"557 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.792 s"),(0,l.kt)("td",{parentName:"tr",align:null},"162 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.508 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"245 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"515 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.850 s"),(0,l.kt)("td",{parentName:"tr",align:null},"30 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.9 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.562 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"5.0 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"552 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.993 s"),(0,l.kt)("td",{parentName:"tr",align:null},"149 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.9 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.168 s (0.22x)"),(0,l.kt)("td",{parentName:"tr",align:null},"5.3 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"434 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"9.976 s"),(0,l.kt)("td",{parentName:"tr",align:null},"39 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 5: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.527 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"47 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"544 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 5: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.829 s"),(0,l.kt)("td",{parentName:"tr",align:null},"148 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")))),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Improvement factor: ",(0,l.kt)("inlineCode",{parentName:"li"},"[0.22, 0.23]")),(0,l.kt)("li",{parentName:"ul"},"Speedup : ",(0,l.kt)("inlineCode",{parentName:"li"},"[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]"))),(0,l.kt)("h4",{parentName:"li",id:"no-rollbacks"},"No rollbacks"),(0,l.kt)("table",{parentName:"li"},(0,l.kt)("thead",{parentName:"table"},(0,l.kt)("tr",{parentName:"thead"},(0,l.kt)("th",{parentName:"tr",align:null},"Name"),(0,l.kt)("th",{parentName:"tr",align:null},"Mean CPU time"),(0,l.kt)("th",{parentName:"tr",align:null},"2*Stdev (CPU time)"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes allocated"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes copied"),(0,l.kt)("th",{parentName:"tr",align:null},"Peak memory"))),(0,l.kt)("tbody",{parentName:"table"},(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.638 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"36 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.4 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"181 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.656 s"),(0,l.kt)("td",{parentName:"tr",align:null},"207 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.7 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.638 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"75 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.4 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"181 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.654 s"),(0,l.kt)("td",{parentName:"tr",align:null},"322 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.7 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.663 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"74 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.4 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"181 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.799 s"),(0,l.kt)("td",{parentName:"tr",align:null},"216 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.7 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.645 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"51 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.4 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"181 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.732 s"),(0,l.kt)("td",{parentName:"tr",align:null},"261 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.7 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 5: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.639 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"19 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.4 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"181 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 5: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.653 s"),(0,l.kt)("td",{parentName:"tr",align:null},"234 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.7 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")))),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Improvement factor: ",(0,l.kt)("inlineCode",{parentName:"li"},"0.19")),(0,l.kt)("li",{parentName:"ul"},"Speedup : ",(0,l.kt)("inlineCode",{parentName:"li"},"1 / 0.19 ~= 5.25"))))),(0,l.kt)("h4",{id:"only-small-rollbacks"},"Only small rollbacks"),(0,l.kt)("table",null,(0,l.kt)("thead",{parentName:"table"},(0,l.kt)("tr",{parentName:"thead"},(0,l.kt)("th",{parentName:"tr",align:null},"Name"),(0,l.kt)("th",{parentName:"tr",align:null},"Mean CPU time"),(0,l.kt)("th",{parentName:"tr",align:null},"2*Stdev (CPU 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GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.696 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"30 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"185 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.822 s"),(0,l.kt)("td",{parentName:"tr",align:null},"106 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.702 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"44 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"186 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"8.906 s"),(0,l.kt)("td",{parentName:"tr",align:null},"147 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"5.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"1.701 s (0.19x)"),(0,l.kt)("td",{parentName:"tr",align:null},"47 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"1.5 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"185 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.0 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 4: 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",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-world/pull/92"},"cardano-world-pr-92")),(0,l.kt)("li",{parentName:"ul"},"Update preview network experimental config defaults: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-world/pull/93"},"cardano-world-pr-93"))),(0,l.kt)("h3",{id:"ci-ops"},"Ci-ops"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-ops/pull/108"},"ci-ops-pull-108"))),(0,l.kt)("h3",{id:"ci-world"},"Ci-world"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Resolve ci-world linux buildkite agent cleanup bug: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f"},"ci-world-commit")),(0,l.kt)("li",{parentName:"ul"},"Integrate new darwin builders into ci-world: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-world/pull/22"},"ci-world-pull-22")),(0,l.kt)("li",{parentName:"ul"},"Migrate patroni HA db to it's own namespace in ci-world: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-world/pull/24"},"ci-world-pull-24"))),(0,l.kt)("h3",{id:"cicero"},"Cicero"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Implement a cicero webhook backoff with exponential decay plus jitter: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cicero/pull/79"},"cicero-pull-79"))),(0,l.kt)("h3",{id:"iohk-nix"},"Iohk-nix"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Update iohk-nix to be source of truth for node environments: ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/iohk-nix/pull/534"},"iohk-nix-pull-534")),(0,l.kt)("li",{parentName:"ul"},"Update preview network experimental config defaults: 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"),(0,n.kt)("h2",{id:"what-we-achieved"},"What we achieved"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3521"},"pull-3521"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3554"},"pull-3554"),"] Improved Governance model (GovernanceProcedures, ProposalProcedure)"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3520"},"pull-3520"),"] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3531"},"pull-3531"),"] Refactored and simplified code interacting with Plutus"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3558"},"pull-3558"),"] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3550"},"pull-3550"),"] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed."),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3551"},"pull-3551"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3546"},"pull-3546"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3472"},"pull-3472"),"] Updated tools and added some small improvements "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3146"},"issue-3146"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3498"},"pull-3498"),"] Introduced Conway protocol parameters "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2948"},"issue-2948"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3499"},"pull-3499"),"] Implemented ConwayGenesis with the new protocol parameters")),(0,n.kt)("h2",{id:"what-is-currently-in-progress"},"What is currently in progress"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3494"},"issue-3494"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3495"},"pull-3495"),"] Implement returning of proposal deposits"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3436"},"issue-3436"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3523"},"pull-3523"),"] Implement transferring lovelace from UTxO to treasury"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3509"},"issue-3509"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3552"},"pull-3552"),"] Add script-support for the committee hot key"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3532"},"issue-3532"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3556"},"pull-3556"),"] Add script-support for the constitution"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3543"},"issue-3543"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3557"},"pull-3557"),"] Improve the 'new committee' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support")))}h.isMDXComponent=!0}}]);
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This has been\none of db-sync main objectives for this period. Restarts are now very fast,\nbecause db-sync deletes almost nothing from the db, it just replays the ledger rules until it\nreaches the tip of the db. The fix also improves reconnection speed, in cases where the node\nrestarts or the connection is temporarily lost. It also speeds up even more in cases where due to a\ndeployment mess up a very old snapshot or no snapshot at all is used."),(0,a.kt)("h3",{id:"property-based-testing"},"Property based testing"),(0,a.kt)("p",null,"We added stateful property based testing, using ",(0,a.kt)("inlineCode",{parentName:"p"},"quickcheck-state-machine"),"\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-db-sync/pull/1269"},"1269"),". These tests use empty or\nalmost empty blocks to test the new behaviour of restarts and rollbacks."),(0,a.kt)("p",null," These tests generate arbitrarily a list of symbolic commands from these:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre"},"RollForward Int\nRollBack BlockNo\nStopDBSync\nStartDBSync\nRestartNode\nAssertBlockNo BlockNo\n")),(0,a.kt)("p",null,"The commands are translated into real commands. For example ",(0,a.kt)("inlineCode",{parentName:"p"},"RollForward Int")," will forge a new block\nthat fits on the current chain. These real commands are executed against db-sync using the mock\nchain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync\nwhich looks like this:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-haskell"},"  Model\n    { serverTip :: BlockNo\n    , dbSyncTip :: BlockNo\n    , dbSynsIsOn :: Bool\n    , dbSynsHasSynced :: Bool\n    }\n")),(0,a.kt)("p",null,"Finally a number of postconditions are checked, related to the eventual block number of db-sync."),(0,a.kt)("h3",{id:"tech-debt"},"Tech Debt"),(0,a.kt)("p",null,"We handled a number of tech debt in\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-db-sync/pull/1275"},"1275"),"\nThis improves the code format of db-sync, deletes many queries that were never used and groups the\nothers. This tech debt resolution not only improves the experience of working in db-sync, but can\nfacilitate some of our other objectives, as it makes it very explicit which queries are used\nduring syncing and which indexes are necessary."),(0,a.kt)("h3",{id:"smash"},"Smash"),(0,a.kt)("p",null,"We worked on fixing an issue related to fetching pool metadata\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-db-sync/pull/1276"},"1276"),".\nThe issue which is described in\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-db-sync/issues/1270"},"1270")))}u.isMDXComponent=!0}}]);
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o=t.length,l=new Array(o);l[0]=m;var s={};for(var i in a)hasOwnProperty.call(a,i)&&(s[i]=a[i]);s.originalType=e,s[d]="string"==typeof e?e:n,l[1]=s;for(var p=2;p<o;p++)l[p]=t[p];return r.createElement.apply(null,l)}return r.createElement.apply(null,t)}m.displayName="MDXCreateElement"},27558:(e,a,t)=>{t.r(a),t.d(a,{assets:()=>i,contentTitle:()=>l,default:()=>u,frontMatter:()=>o,metadata:()=>s,toc:()=>p});var r=t(87462),n=(t(67294),t(3905));const o={title:"SRE Team Update",slug:"2023-10-13-sre",authors:"johnalotoski",tags:["sre"],hide_table_of_contents:!1},l=void 0,s={permalink:"/cardano-updates/2023-10-13-sre",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-sre.md",source:"@site/blog/2023-10-13-sre.md",title:"SRE Team Update",description:"High level summary",date:"2023-10-13T00:00:00.000Z",formattedDate:"October 13, 2023",tags:[{label:"sre",permalink:"/cardano-updates/tags/sre"}],readingTime:2.595,hasTruncateMarker:!1,authors:[{name:"John 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u(e){let{components:a,...t}=e;return(0,n.kt)(d,(0,r.Z)({},c,t,{components:a,mdxType:"MDXLayout"}),(0,n.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,n.kt)("p",null,"The SRE team continues work on cardano environment improvements and general environment maintenance."),(0,n.kt)("p",null,"Some notable recent changes, updates or improvements include:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Sanchonet environment was updated to 8.5.0-pre."),(0,n.kt)("li",{parentName:"ul"},"Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring")),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h3",{id:"capkgs"},"Capkgs"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Various improvements and fixes including:",(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Add GHA cron schedule"),(0,n.kt)("li",{parentName:"ul"},"Add nix auto-gc to avoid running out of storage during large package set builds"),(0,n.kt)("li",{parentName:"ul"},"Add new packages to capkgs"),(0,n.kt)("li",{parentName:"ul"},"Reduce runner storage requirement leaving more room for builds"),(0,n.kt)("li",{parentName:"ul"},"Restructure capkgs attribute names to avoid package name collisions"),(0,n.kt)("li",{parentName:"ul"},"Return to non-musl builds for cardano packages to retain journald compatability"),(0,n.kt)("li",{parentName:"ul"},"Update cache usage to from file level to folder level to reduce network and latency overhead"),(0,n.kt)("li",{parentName:"ul"},"Commit diff: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22"},"capkgs-compare"))))),(0,n.kt)("h3",{id:"cardano-parts"},"Cardano-parts"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-parts/pull/16"},"cardano-parts-pull-16")),(0,n.kt)("li",{parentName:"ul"},"Dbsync, smash, faucet and more: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-parts/pull/15"},"cardano-parts-pull-15"),(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes"),(0,n.kt)("li",{parentName:"ul"},"Adds nginx vhost metrics exporter profile"),(0,n.kt)("li",{parentName:"ul"},"Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down"),(0,n.kt)("li",{parentName:"ul"},"Adds bash *-ng autocompletion compatible wrappers"),(0,n.kt)("li",{parentName:"ul"},"Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview"),(0,n.kt)("li",{parentName:"ul"},"Adds downstream grafana cloud dashboard as templates"),(0,n.kt)("li",{parentName:"ul"},"Adds downstream grafana cloud alerts as templates"),(0,n.kt)("li",{parentName:"ul"},"Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish"),(0,n.kt)("li",{parentName:"ul"},"Updates the basic profile with IOG cache and commonly used bins"),(0,n.kt)("li",{parentName:"ul"},"Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning"),(0,n.kt)("li",{parentName:"ul"},"Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks"),(0,n.kt)("li",{parentName:"ul"},"Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets"),(0,n.kt)("li",{parentName:"ul"},"Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration"),(0,n.kt)("li",{parentName:"ul"},"Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion"),(0,n.kt)("li",{parentName:"ul"},"Updates the colmena template with dbsync, smash, faucet machines profiles and roles"),(0,n.kt)("li",{parentName:"ul"},"Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns"),(0,n.kt)("li",{parentName:"ul"},"Bumps capkgs node-ng to 8.5.0-pre")))),(0,n.kt)("h3",{id:"cardano-playground"},"Cardano-playground"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Dbsync, smash, faucet and more: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-playground/pull/3"},"cardano-playground-pull-3"),(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview"),(0,n.kt)("li",{parentName:"ul"},"Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts"),(0,n.kt)("li",{parentName:"ul"},"Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change"),(0,n.kt)("li",{parentName:"ul"},"Optimizes machine sizes"),(0,n.kt)("li",{parentName:"ul"},"Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets"),(0,n.kt)("li",{parentName:"ul"},"Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion"),(0,n.kt)("li",{parentName:"ul"},"Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning"),(0,n.kt)("li",{parentName:"ul"},"Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration")))),(0,n.kt)("h3",{id:"cardano-world"},"Cardano-world"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Update sanchonet network to cardano-node 8.5.0: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4"},"cardano-world-commit"))),(0,n.kt)("h3",{id:"sanchonet-demo"},"Sanchonet-demo"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31"},"sanchonet-demo-commit"))))}u.isMDXComponent=!0}}]);
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Similarly, we merged the redesig of the API to mantain consistency. "),(0,n.kt)("li",{parentName:"ul"},"Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. "),(0,n.kt)("li",{parentName:"ul"},"cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. "),(0,n.kt)("li",{parentName:"ul"},"KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"musig2"},"MuSig2"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"[Still in progress]"," We are introducing a more granular error handling mechanism ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/33"},"PR#33")),(0,n.kt)("li",{parentName:"ul"},"We merged the API redesig ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/35"},"PR#35")),(0,n.kt)("li",{parentName:"ul"},"We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We'll probably circle back to this in the future ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/36"},"PR#36"))),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We merged the individual signature ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/620"},"PR#620")),(0,n.kt)("li",{parentName:"ul"},"We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/kes/commits/master"},"kes repo"),") ")),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Nothing new to report. Still working in merging these PRs. "),(0,n.kt)("li",{parentName:"ul"},"We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a ",(0,n.kt)("a",{parentName:"li",href:"https://gitlab.haskell.org/ghc/ghc/-/issues/22564"},"bug in GHC"))),(0,n.kt)("h2",{id:"kes-agent"},"KES agent"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We keep progressing in the secure forgetting PR and resolving some bugs on memory handling ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/255"},"PR#255")),(0,n.kt)("li",{parentName:"ul"},"Fixed a 'use-after-free' bug in the KES agent.")))}c.isMDXComponent=!0}}]);
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distribution to the ledger state must proceed with caution.\nWe do not want the memory used by the node to increase too much,\nand performance problems can lead to reduced block production.\nWe have prototyped, tested, and benchmarked several approaches that could give us\nthe current DRep stake distribution at each epoch boundary.\nThis has very important implications, since we want every ADA holder to be able to at any\ntime (such as during a contentious vote) register themselves as a DRep and still have time\nto vote themselves on the issue."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3344"},"pull-3344"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3353"},"pull-3353"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3364"},"pull-3364"),"]"),(0,r.kt)("h4",{id:"integration-work"},"Integration work"),(0,r.kt)("p",null,"The ledger has made some wonderful improvements over the past six months,\nbut which entail a significant amount of integration efforts:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Our new versioned CBOR schemes"),(0,r.kt)("li",{parentName:"ul"},"Individual deposit tracking"),(0,r.kt)("li",{parentName:"ul"},"An improved cross-era interface utilizing lenses"),(0,r.kt)("li",{parentName:"ul"},"A new ledger API"),(0,r.kt)("li",{parentName:"ul"},"Re-arranging the ledger stake in preparation for CIP-1694"),(0,r.kt)("li",{parentName:"ul"},"Versioning our Haskell packages\nusing ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-haskell-packages"},"CHaPs"),"."),(0,r.kt)("li",{parentName:"ul"},"Consistent conventions for variable names")),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3279"},"pull-3279"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3282"},"pull-3282"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3288"},"pull-3288"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3289"},"pull-3289"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3292"},"pull-3292"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3297"},"pull-3297"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3298"},"pull-3298"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3299"},"pull-3299"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3300"},"pull-3300"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3302"},"pull-3302"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3303"},"pull-3303"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3308"},"pull-3308"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3342"},"pull-3342"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3345"},"pull-3345"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3356"},"pull-3356"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3357"},"pull-3357"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3360"},"pull-3360"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3361"},"pull-3361"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3363"},"pull-3363"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4349"},"pull-4349"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/378"},"pull-378"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/376"},"pull-376"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/373"},"pull-373"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/370"},"pull-370"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/361"},"pull-361"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4976"},"pull-4976"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5013"},"pull-5013"),"]"),(0,r.kt)("h4",{id:"deposit-tracking"},"Deposit tracking"),(0,r.kt)("p",null,"Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.\nDeposits were returned according to the current protocol parameters.\nWhen the values of these two protocol parameters change, the deposit pot\nis adjusted by adding to, or removing from, the reserves."),(0,r.kt)("p",null,"This has several problems:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Most people expect a deposit to be paid back exactly."),(0,r.kt)("li",{parentName:"ul"},"We cannot increase the deposit amount once the reserves hits zero."),(0,r.kt)("li",{parentName:"ul"},"If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials."),(0,r.kt)("li",{parentName:"ul"},"Because of the problems above, it is going to be incredibly hard to ever change the values."),(0,r.kt)("li",{parentName:"ul"},"There is a serious issue involving hard forks.\nThe consensus layer makes the decision about whether or not to enact a hard fork based on\nthe protocol parameter update state two stability windows before the end of the epoch.\nHowever, the ledger will reject a protocol parameter update on the epoch boundary\nif the deposit pot adjustments cannot be reconciled with the reseve pot.\nThis means that if quorum is met regarding changing the major protocol version,\nbut the update is rejected on the epoch boundary, consensus will change the era but the\nledger will not change the major protocol version, leaving the ledger in a split-brain state.")),(0,r.kt)("p",null,"Because we never actually changed the values of the two deposits amounts in the protocol parameters\non mainnet, we were able to retroactively change the behavior.\nWe made the following changes:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Individual deposits are tracked in the ",(0,r.kt)("inlineCode",{parentName:"li"},"DState"),"."),(0,r.kt)("li",{parentName:"ul"},"The amount deposited is always returned.")),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3195"},"pull-3195"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3202"},"pull-3202"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3217"},"pull-3217"),"]"),(0,r.kt)("h4",{id:"new-ledger-api"},"New ledger API"),(0,r.kt)("p",null,"We have significantly built up the ledger API.\nWe will eventually replace much of the ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-api")," in the node repository with this ledger API."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3242"},"pull-3242"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3248"},"pull-3248"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3328"},"pull-3328"),"]"),(0,r.kt)("h4",{id:"constraint-based-generators"},"Constraint-based generators"),(0,r.kt)("p",null,"Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks\nwhich span several epochs, mimicking a real network.\nThese tests are, in theory, excellent for checking properties.\nThey are, however, very difficult to maintain and are not as random as we would like\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks)."),(0,r.kt)("p",null,"We have a new declaritive infrastructure for building constraint-based generators,\nwhich instead generate a random ledger state representative of not just an initial state,\nbut also those representative of the end result of a long sequence of valid blocks.\nMoreover, these generators are very fast and are much more random than our old generators.\nBefore we can start using them for our existing property tests, however, we still need to\nexpand them to generate a valid block for a given ledger state."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3219"},"pull-3219"),"]"),(0,r.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"We continued to address technical debt as much as we can."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3167"},"pull-3167"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3170"},"pull-3170"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3172"},"pull-3172"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3175"},"pull-3175"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3184"},"pull-3184"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3205"},"pull-3205"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3208"},"pull-3208"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3210"},"pull-3210"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3212"},"pull-3212"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3218"},"pull-3218"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3222"},"pull-3222"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3223"},"pull-3223"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3224"},"pull-3224"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3225"},"pull-3225"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3229"},"pull-3229"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3239"},"pull-3239"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3241"},"pull-3241"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3244"},"pull-3244"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3245"},"pull-3245"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3249"},"pull-3249"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3260"},"pull-3260"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3263"},"pull-3263"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3264"},"pull-3264"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3268"},"pull-3268"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3269"},"pull-3269"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3270"},"pull-3270"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3274"},"pull-3274"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3276"},"pull-3276"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3277"},"pull-3277"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3286"},"pull-3286"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3290"},"pull-3290"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3295"},"pull-3295"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3296"},"pull-3296"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3306"},"pull-3306"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3307"},"pull-3307"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3310"},"pull-3310"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3311"},"pull-3311"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3316"},"pull-3316"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3320"},"pull-3320"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3323"},"pull-3323"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3327"},"pull-3327"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3331"},"pull-3331"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3332"},"pull-3332"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3333"},"pull-3333"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3338"},"pull-3338"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3341"},"pull-3341"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3347"},"pull-3347"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3350"},"pull-3350"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3351"},"pull-3351"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3352"},"pull-3352"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3354"},"pull-3354"),"]"),(0,r.kt)("h5",{id:"critical-fixes"},"Critical fixes"),(0,r.kt)("p",null,"We fixed two critical issues:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Growing block production delay on the epoch boundary: [",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3209"},"pull-3209"),"]"),(0,r.kt)("li",{parentName:"ul"},"Unexpected node shutdown from ",(0,r.kt)("inlineCode",{parentName:"li"},"balanceR"),": [",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3343"},"pull-3343"),"]")),(0,r.kt)("h3",{id:"next-steps"},"Next steps"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Conway spec")," -\nComplete the first version of the conway formal specification."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"DRep stake distribution")," -\nHave the ledger compute the DRep stake distribution with acceptible performance."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Devnet ready")," -\nHave the Haskell implementation of the conway era in sync with the formal specification,\nand integrate the changes with consensus and node.\nAll the details might not be finalized, but the wire specification and the API should\nbe stable so that conway can be placed on a devnet for tool builders to start integrating with."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Plutus V3")," -\nIntegrate Plutus V3 into the ledger, including a new script context which supports DReps.")),(0,r.kt)("h3",{id:"more-details"},"More details"),(0,r.kt)("p",null,"This quarterly report was based off of the following fortnightly ones:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-01-05-ledger"},"2023-01-05")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-01-19-ledger"},"2023-01-19")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-02-02-ledger"},"2023-02-02")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-02-17-ledger"},"2023-02-17")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-03-ledger"},"2023-03-03")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-17-ledger"},"2023-03-17")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-31-ledger"},"2023-03-31"))))}s.isMDXComponent=!0}}]);
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)\n}\n```\n')),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre",className:"language-jsx",metastring:'title="src/components/HelloDocusaurus.js"',title:'"src/components/HelloDocusaurus.js"'},"function HelloDocusaurus() {\n  return <h1>Hello, Docusaurus!</h1>;\n}\n")),(0,a.kt)("h2",{id:"admonitions"},"Admonitions"),(0,a.kt)("p",null,"Docusaurus has a special syntax to create admonitions and callouts:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre"},":::tip My tip\n\nUse this awesome feature option\n\n:::\n\n:::danger Take care\n\nThis action is dangerous\n\n:::\n")),(0,a.kt)("admonition",{title:"My tip",type:"tip"},(0,a.kt)("p",{parentName:"admonition"},"Use this awesome feature option")),(0,a.kt)("admonition",{title:"Take care",type:"danger"},(0,a.kt)("p",{parentName:"admonition"},"This action is dangerous")),(0,a.kt)("h2",{id:"mdx-and-react-components"},"MDX and React Components"),(0,a.kt)("p",null,(0,a.kt)("a",{parentName:"p",href:"https://mdxjs.com/"},"MDX")," can make 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diff --git a/assets/js/1a21d6a2.8c1f975e.js b/assets/js/1a21d6a2.8c1f975e.js
new file mode 100644
index 00000000000..198aedc0663
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+++ b/assets/js/1a21d6a2.8c1f975e.js
@@ -0,0 +1 @@
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diff --git a/assets/js/1a657a20.8a85f02f.js b/assets/js/1a657a20.8a85f02f.js
new file mode 100644
index 00000000000..726825e0e30
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diff --git a/assets/js/1a932c01.6aaf6224.js b/assets/js/1a932c01.6aaf6224.js
new file mode 100644
index 00000000000..7a7521a9bb7
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We'd like to thank Prof. John Hughes\n(Quviq AB) for helping us with debugging the issue."),(0,r.kt)("p",null,"We also provided a more uniform API for ",(0,r.kt)("inlineCode",{parentName:"p"},"IOSimPOR"),", and added ways to make the\ndebugging similar problems in the future easier."),(0,r.kt)("details",null,(0,r.kt)("summary",null,"Technical Details on IOSim refactoring"),"We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we'd need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future."),(0,r.kt)("h4",{id:"iosim"},"IOSim"),(0,r.kt)("p",null,"To prepare for the next release, we consolidate packages taking advantage of\nthe public sublibraries supported now both by ",(0,r.kt)("inlineCode",{parentName:"p"},"cabal")," and ",(0,r.kt)("inlineCode",{parentName:"p"},"Hackage"),".   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They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes."),(0,a.kt)("p",null,"Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client."),(0,a.kt)("h2",{id:"low-level-overview"},"Low level overview"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Use 'zstandard' compression for snapshot archives")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/876"},"#876")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Design & implement stress test tool for aggregator - phase 2")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1155"},"#1155")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Provide progress information with '--json' option in Client")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1095"},"#1095")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Make client download and extract the archive simultaneously")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1115"},"#1115")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Add aggregator Cardano node version in snapshot artifact")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/948"},"#948")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Make Cardano node version part of the Mithril network configuration")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/947"},"#947")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Post deployment 'mainnet' infrastructure")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1091"},"#1091")),(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Errors refactoring")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/798"},"#798")),(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Add Cloudflare protection of infrastructure")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/986"},"#986")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Failed to restore recent snapshot with strange error")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1160"},"#1160")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Update 'ed25519-dalek' to '2.0.0'")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1188"},"#1188")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Add target networks blocks in release notes")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1151"},"#1151")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Fix end to end 'wait_for_the_expected_time' test")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1191"},"#1191")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Fix docs 'git checkout' command")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1174"},"#1174"))))}m.isMDXComponent=!0}}]);
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r=o.length,i=new Array(r);i[0]=d;var s={};for(var l in t)hasOwnProperty.call(t,l)&&(s[l]=t[l]);s.originalType=e,s[u]="string"==typeof e?e:a,i[1]=s;for(var c=2;c<r;c++)i[c]=o[c];return n.createElement.apply(null,i)}return n.createElement.apply(null,o)}d.displayName="MDXCreateElement"},91179:(e,t,o)=>{o.r(t),o.d(t,{assets:()=>l,contentTitle:()=>i,default:()=>p,frontMatter:()=>r,metadata:()=>s,toc:()=>c});var n=o(87462),a=(o(67294),o(3905));const r={title:"Initial CIP 1694 Security Analysis and Responses",slug:"2023-11-20-cip1694",authors:"kevinhammond",tags:["ledger","cip1694","security"],hide_table_of_contents:!1},i=void 0,s={permalink:"/cardano-updates/2023-11-20-cip1694",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-20-cip1694.md",source:"@site/blog/2023-11-20-cip1694.md",title:"Initial CIP 1694 Security Analysis and Responses",description:"High level summary",date:"2023-11-20T00:00:00.000Z",formattedDate:"November 20, 2023",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"},{label:"cip1694",permalink:"/cardano-updates/tags/cip-1694"},{label:"security",permalink:"/cardano-updates/tags/security"}],readingTime:5.345,hasTruncateMarker:!1,authors:[{name:"Kevin Hammond",title:"Head of Software Engineering, Cardano Core",url:"https://github.com/kevinhammond",imageURL:"https://github.com/kevinhammond.png",key:"kevinhammond"}],frontMatter:{title:"Initial CIP 1694 Security Analysis and Responses",slug:"2023-11-20-cip1694",authors:"kevinhammond",tags:["ledger","cip1694","security"],hide_table_of_contents:!1},prevItem:{title:"Mithril Team Update",permalink:"/cardano-updates/2023-11-22-mithril"},nextItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2023-11-17-hydra"}},l={authorsImageUrls:[void 0]},c=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Initial CIP-1694 Security Analysis and Responses",id:"initial-cip-1694-security-analysis-and-responses",level:2},{value:"Section: The constitutional committee",id:"section-the-constitutional-committee",level:3},{value:"Section: Size of the constitutional committee",id:"section-size-of-the-constitutional-committee",level:3},{value:"Section: Terms",id:"section-terms",level:3},{value:"Section: Registered DReps",id:"section-registered-dreps",level:3},{value:"Section: Ratification",id:"section-ratification",level:3},{value:"Section: Content",id:"section-content",level:3},{value:"Section: Protocol Parameter groups",id:"section-protocol-parameter-groups",level:3},{value:"Section: Votes",id:"section-votes",level:3},{value:"Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes",id:"section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes",level:3},{value:"Section: Changes post Edinburgh workshop (July 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We summarise the analysis and our responses here."),(0,a.kt)("h2",{id:"initial-cip-1694-security-analysis-and-responses"},"Initial CIP-1694 Security Analysis and Responses"),(0,a.kt)("h3",{id:"section-the-constitutional-committee"},"Section: The constitutional committee"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},'\u201cFor example, if we consider the hypothetical Constitution rule "The Cardano network must always be able to produce new blocks" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.')),(0,a.kt)("p",null,"There is a 'guardrails document' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-size-of-the-constitutional-committee"},"Section: Size of the constitutional committee"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.")),(0,a.kt)("p",null,"Thanks. Yes, we\u2019ve been thinking about this issue for a long time, see for example the section \u2018Final safety measure, post bootstrapping\u2019. We don\u2019t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps"),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-terms"},"Section: Terms"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"The following sentence is a bit awkward to read: \u201cFor example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d \u2014> Suggestion: \u201cFor example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d ")),(0,a.kt)("p",null,"Thanks. Yes, that suggestion is a bit easier to read."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-registered-dreps"},"Section: Registered DReps"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"\u201cAdditionally, registered DReps will need to vote regularly to still be considered active.\u201d - There is a minor issue with requiring \u201cvoting regularly\u201d. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).")),(0,a.kt)("p",null,"Thanks. We\u2019ve added a mechanism to prevent that issue in the spec/code where if there\u2019s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-ratification"},"Section: Ratification"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is a bit unclear why protocol changes: network group and technical group are two separate groups.")),(0,a.kt)("p",null,"These correspond exactly to the groups that are administered by the Parameter Committee."),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"I didn\u2019t understand the rationale for requiring 100% \u201cYes\u201d votes to pass \u201cInfo\u201d type governance actions? It seems they have the least potential to harm the system.")),(0,a.kt)("p",null,"Yes, it\u2019s not about harming the system, since ",(0,a.kt)("inlineCode",{parentName:"p"},"Info"),"\nactions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. "),(0,a.kt)("p",null,"Once an action is enacted it\u2019s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-content"},"Section: Content"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.")),(0,a.kt)("p",null,"Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-protocol-parameter-groups"},"Section: Protocol Parameter groups"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.")),(0,a.kt)("p",null,"These are existing protocol parameters, described in e.g. ",(0,a.kt)("a",{parentName:"p",href:"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time."},"https://cips.cardano.org/cips/cip9/"),"9 or ",(0,a.kt)("a",{parentName:"p",href:"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time."},"The Cardano Protocol Parameters Guide"),"."),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. ")),(0,a.kt)("p",null,"All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-votes"},"Section: Votes"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?")),(0,a.kt)("p",null,"They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don\u2019t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes"},"Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.")),(0,a.kt)("p",null,"There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. 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This is the primary way for new\nunregistered nodes to enter the network, which then can be shared using peer\nsharing.  Note that peer sharing is an experimental feature which is disabled\nuntil genesis & eclipse evasion as fully implemented. See ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3596"},"#3596"),"."),(0,o.kt)("p",null,"We are making progress reviewing eclipse evasion, ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3886"},"#3886"),"."),(0,o.kt)("p",null,"We fixed another bug in local root peers.  We found out that if the local roots\nwhere ignored until the first domain name was resolved, see ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4583"},"#4583"),".  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See ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4589"},"#4589"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4593"},"#4593")," and ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5313"},"#5313"),".\nThe new version of ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," will use ",(0,o.kt)("inlineCode",{parentName:"p"},"ISO8601")," formatted\ntimestamps; also the formatting of ping results is slightly improved, and it\nwill introduce the new ",(0,o.kt)("inlineCode",{parentName:"p"},"--query-versions")," (",(0,o.kt)("inlineCode",{parentName:"p"},"-Q"),") switch.  If the remote site\nsupports the query parameter, the command will print:"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre"},"redacted-ip:port network rtt: 0.064\nredacted-ip:port handshake rtt: 0.064010896s\nredacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat\norAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]\n")),(0,o.kt)("p",null,"otherwise it will print the negotiation results"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre"},"redacted-ip:port network rtt: 0.045\nredacted-ip:port handshake rtt: 0.101867615s\nredacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder\n")),(0,o.kt)("p",null,"Note that in that case ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," offers ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),", which\nallows us to detect whether the remote side is an ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorOnly")," or\n",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),".   Also ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," will no longer announce\nitself as ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),", except for the case mentioned above."),(0,o.kt)("h3",{id:"other-smaller-contributions"},"Other smaller contributions"),(0,o.kt)("p",null,"On a request from the Marlow Team, we published haddocks of ",(0,o.kt)("inlineCode",{parentName:"p"},"typed-protocols"),",\nwhich are now available ",(0,o.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/typed-protocols/"},"here")," (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/40"},"#40"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/41"},"#41"),")."),(0,o.kt)("p",null,"We made a new release of ",(0,o.kt)("inlineCode",{parentName:"p"},"strict-stm-1.1.0.1")," on Hackage, which fixed a bug in\npackage description file, ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/101"},"#101")," ."),(0,o.kt)("p",null,"We also helped to debug a deadlock when using named pipes on Windows in the new\n",(0,o.kt)("inlineCode",{parentName:"p"},"RawBearer")," API.  The API is being used to store secret keys only in memory.\nThe PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4395"},"#4395")," is under review."),(0,o.kt)("p",null,"We also have two more PRs which are under review:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4530"},"#4530"),": enabling ledger peers on a fixed number of slots before the tip of the chain;"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4580"},"#4580"),": a PR which fixes inconsistencies in one of our cddl specs.")))}c.isMDXComponent=!0}}]);
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Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files."),(0,a.kt)("p",null,"Finally, they continued addressing some performance issue associated with the 'release-mainnet' aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation."),(0,a.kt)("h2",{id:"low-level-overview"},"Low level overview"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("strong",{parentName:"li"},"Prototype a P2P relay with ",(0,a.kt)("inlineCode",{parentName:"strong"},"libp2p"))," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1300"},"#1300")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("strong",{parentName:"li"},"Light Wallet: Release ",(0,a.kt)("inlineCode",{parentName:"strong"},"mithril-client")," library")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1311"},"#1311")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("strong",{parentName:"li"},"Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1283"},"#1283")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("strong",{parentName:"li"},(0,a.kt)("inlineCode",{parentName:"strong"},"release-mainnet")," aggregator is unreachable")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1310"},"#1310")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("strong",{parentName:"li"},"Fix certificate hashes re-computation in aggregator")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1343"},"#1343")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("strong",{parentName:"li"},"Remove ",(0,a.kt)("inlineCode",{parentName:"strong"},"unstable")," tag in ",(0,a.kt)("inlineCode",{parentName:"strong"},"unstable")," release")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1235"},"#1235")),(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("strong",{parentName:"li"},"Enhance aggregator REST API performances")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1327"},"#1327")),(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("strong",{parentName:"li"},"Signer runtime is stuck for some SPO")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1312"},"#1312"))))}h.isMDXComponent=!0}}]);
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The specification is constantly\ngetting improved upon reviewer feedback on overleaf - this week the graphical\nnotation was refined to be more transaction-focused."),(0,n.kt)("h2",{id:"what-did-the-team-achieve-this-week"},"What did the team achieve this week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Clarified ","\u201c","bug","\u201d"," of committing UTxOs with reference scripts to a Hydra head ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/737"},"#737")),(0,n.kt)("li",{parentName:"ul"},"Prepare usage of ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-node")," on mainnet by updating command line options ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/pull/715"},"#715")),(0,n.kt)("li",{parentName:"ul"},"Improved our mutation test suite to all expected errors ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/705"},"#705")),(0,n.kt)("li",{parentName:"ul"},"Re-opened our persistent hydraw demo head on ",(0,n.kt)("inlineCode",{parentName:"li"},"preprod")," using version ",(0,n.kt)("inlineCode",{parentName:"li"},"0.9.0")),(0,n.kt)("li",{parentName:"ul"},"Updated on-chain graphs to be more transaction-focused in the specification")),(0,n.kt)("h2",{id:"what-are-the-goals-of-next-week"},"What are the goals of next week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Complete mainnet compatibility feature"),(0,n.kt)("li",{parentName:"ul"},"Prepare the Hydra workshop"),(0,n.kt)("li",{parentName:"ul"},"Address all todo\u2019s in the Hydra specification"),(0,n.kt)("li",{parentName:"ul"},"Unblock the auctions project with ","\u201c","commit from script","\u201d"," a solution")))}c.isMDXComponent=!0}}]);
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+"use strict";(self.webpackChunkcardano_updates=self.webpackChunkcardano_updates||[]).push([[47704],{3529:(e,t,o)=>{o.r(t),o.d(t,{assets:()=>l,contentTitle:()=>u,default:()=>d,frontMatter:()=>r,metadata:()=>s,toc:()=>p});var n=o(87462),a=(o(67294),o(3905)),i=o(22004);const r={title:"Network Team Update",slug:"2022-09-27-network",authors:"coot",tags:["network"],hide_table_of_contents:!1},u=void 0,s={permalink:"/cardano-updates/2022-09-27-network",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-27-network.md",source:"@site/blog/2022-09-27-network.md",title:"Network Team Update",description:"Network Update",date:"2022-09-27T00:00:00.000Z",formattedDate:"September 27, 2022",tags:[{label:"network",permalink:"/cardano-updates/tags/network"}],readingTime:2.24,hasTruncateMarker:!1,authors:[{name:"Marcin Szamotulski",title:"Network Team Lead",url:"https://github.com/coot",imageURL:"https://github.com/coot.png",key:"coot"}],frontMatter:{title:"Network Team Update",slug:"2022-09-27-network",authors:"coot",tags:["network"],hide_table_of_contents:!1},prevItem:{title:"Ledger Team Update",permalink:"/cardano-updates/2022-09-30-ledger"},nextItem:{title:"Consensus Team Update",permalink:"/cardano-updates/2022-09-20-consensus"}},l={authorsImageUrls:[void 0]},p=[{value:"Network Update",id:"network-update",level:2},{value:"Ouroboros Network",id:"ouroboros-network",level:3},{value:"Ouroboros Consensus",id:"ouroboros-consensus",level:3},{value:"Some older items, which were not announced",id:"some-older-items-which-were-not-announced",level:4},{value:"Cardano Node",id:"cardano-node",level:3},{value:"IO-Sim",id:"io-sim",level:3},{value:"Typed Protocols",id:"typed-protocols",level:3},{value:"Input Endorsers Simulation",id:"input-endorsers-simulation",level:3}],k={toc:p},h="wrapper";function d(e){let{components:t,...o}=e;return(0,a.kt)(h,(0,n.Z)({},k,o,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h2",{id:"network-update"},"Network Update"),(0,a.kt)("h3",{id:"ouroboros-network"},"Ouroboros Network"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We finished high and low level ",(0,a.kt)("em",{parentName:"li"},"peer sharing")," design. See\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan"},"Peer Sharing Implementation Plan")),(0,a.kt)("li",{parentName:"ul"},"We started working on low-level design of ",(0,a.kt)("em",{parentName:"li"},"eclipse evasion")," (work in\nprogress)."),(0,a.kt)("li",{parentName:"ul"},"We decided to use ",(0,a.kt)("strong",{parentName:"li"},"peer sharing")," instead of overloaded and ambiguous ",(0,a.kt)("em",{parentName:"li"},"gossip")," term.\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3980"},"PR input-output-hk/ouroboros-network#3980")),(0,a.kt)("li",{parentName:"ul"},"We fixed technical dept\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3905"},"issue input-output-hk/cardano-node#3905")," in\nthe simulation testing of diffusion\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4004"},"PR input-output-hk/cardano-node#4004")),(0,a.kt)("li",{parentName:"ul"},"We deployed all our nodes using our new nix based deployment architecture.\nWhen deploying we found an issue in the\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/issues/3752"},(0,a.kt)("inlineCode",{parentName:"a"},"RTView")),".")),(0,a.kt)("h3",{id:"ouroboros-consensus"},"Ouroboros Consensus"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Recently we found out that the consensus does not log exceptions thrown during\nintiialisation.  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Currently, we see that\n",(0,r.kt)("inlineCode",{parentName:"p"},"typed-protocols-0.2.0.0")," can outperform ",(0,r.kt)("inlineCode",{parentName:"p"},"typed-protocols-0.1.0.0")," when running\nin isolation with a simple ",(0,r.kt)("inlineCode",{parentName:"p"},"ping-pong")," protocol, so the regression might be in\nthe new block fetch implementation which comes with ",(0,r.kt)("inlineCode",{parentName:"p"},"typed-protocols-0.2.0.0"),"\nSee ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/3"},"typed-protocols#3"),"."),(0,r.kt)("h3",{id:"tech-debt"},"Tech Debt"),(0,r.kt)("p",null,"We merged two PRs written by Galois engineers:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"a pull request which refactors the main entry function for P2P, see ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3834"},"ouroboros-network#3834"),"; "),(0,r.kt)("li",{parentName:"ul"},"a pull request which reviews usage of ",(0,r.kt)("inlineCode",{parentName:"li"},"unsafe")," function in the network code based.")),(0,r.kt)("p",null,"Galois also made progress with the following two issues:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"add microbenchmarks to some of our tests: ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3832"},"ouroboros-network#3832")),(0,r.kt)("li",{parentName:"ul"},"inspect use of ",(0,r.kt)("inlineCode",{parentName:"li"},"error")," in ",(0,r.kt)("inlineCode",{parentName:"li"},"ouroboros-network")," repository:\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3836"},"ouroboros-network#3836"))),(0,r.kt)("h3",{id:"io-sim"},"IO-Sim"),(0,r.kt)("h4",{id:"iosimpor"},"IOSimPOR"),(0,r.kt)("p",null,"We found and fixed a bug in ",(0,r.kt)("inlineCode",{parentName:"p"},"IOSimPOR"),".  We'd like to thank Prof. John Hughes\n(Quviq AB) for helping us with debugging the issue."),(0,r.kt)("p",null,"We also provided a more uniform API for ",(0,r.kt)("inlineCode",{parentName:"p"},"IOSimPOR"),", and added ways to make the\ndebugging similar problems in the future easier."),(0,r.kt)("details",null,(0,r.kt)("summary",null,"Technical Details on IOSim refactoring"),"We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we'd need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future."),(0,r.kt)("h4",{id:"iosim"},"IOSim"),(0,r.kt)("p",null,"To prepare for the next release, we consolidate packages taking advantage of\nthe public sublibraries supported now both by ",(0,r.kt)("inlineCode",{parentName:"p"},"cabal")," and ",(0,r.kt)("inlineCode",{parentName:"p"},"Hackage"),".   This is\na work in progress, ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/issues/114"},"io-sim#114"),"."),(0,r.kt)("h3",{id:"cardano-newtork-service-assurance"},"Cardano Newtork Service Assurance"),(0,r.kt)("p",null,"Galois made the following progress:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"A test run of spinning up a CNSA instance was done, as a result documentation\nwas updated."),(0,r.kt)("li",{parentName:"ul"},"Based on the IOG code review of the CNSA code, updates to the CNSA code were\nmade."),(0,r.kt)("li",{parentName:"ul"},'Galois has started the design for adding a CNSA analysis for "fetched bytes\nover time while node is syncing".')),(0,r.kt)("h3",{id:"p2p-adoption"},"P2P adoption"),(0,r.kt)("p",null,"In the last two weeks, we've seen increase in P2P adoption.\n",(0,r.kt)("img",{alt:"P2P relays",src:o(53101).Z,width:"2668",height:"1576"})),(0,r.kt)("p",null,"The following graphs show several different versions of relays running on the mainnet.  The\ngreen line ",(0,r.kt)("inlineCode",{parentName:"p"},"NodeToNodeVersionV10.True")," denotes P2P relays.\n",(0,r.kt)("img",{alt:"node versions",src:o(40970).Z,width:"2674",height:"1580"})),(0,r.kt)("h3",{id:"open-source"},"Open Source"),(0,r.kt)("p",null,"We upstreamed our FFI bindings to Windows named pipes to ",(0,r.kt)("inlineCode",{parentName:"p"},"Win32")," package, the\nPR was accepted and merged."),(0,r.kt)("p",null,"We also received an external contribution which enhanced our documentation, see\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4676"},"ouroboros-network#4676"),"."))}c.isMDXComponent=!0},53101:(e,t,o)=>{o.d(t,{Z:()=>n});const n=o.p+"assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png"},40970:(e,t,o)=>{o.d(t,{Z:()=>n});const n=o.p+"assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png"}}]);
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This was an enormous effort, but it will solve a host of problems that we have\nhad since the Shelley phase. It will take time to properly review it, and we will\nneed to put in a lot of effort to integrate it with the downstream components, but this is  a huge\nmilestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction\nserialization schemes."),(0,a.kt)("p",null,"We also have a draft pull request that reworks how deposits are tracked. Users of the system will\nnot notice any difference, but it is a necessary change needed to prepare the way for\ndecentralizing the governance of Cardano."),(0,a.kt)("p",null,"Finally, we continued to address technical debt. 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We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4422"},"store")," the benchmark data to make it available\nto the GitHub action that ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/12"},"publishes")," the benchmarks results."),(0,a.kt)("p",null,"Other minor improvements include:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4429"},"Removal")," of ",(0,a.kt)("inlineCode",{parentName:"li"},"Test.Util.Classify")," in favour of ",(0,a.kt)("inlineCode",{parentName:"li"},"Test.StateMachine.Labelling"),"."),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4423"},"Addition")," of ",(0,a.kt)("inlineCode",{parentName:"li"},"-Wunused-packages")," to the default ",(0,a.kt)("inlineCode",{parentName:"li"},"ghc-options")," for Consensus\npackages.")),(0,a.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,a.kt)("p",null,"We finished moving the Consensus documentation ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4374"},"from"),"\n",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/haskell-lmdb/pull/8"},"to")," ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus"),", in preparation for\nmigrating the code to the latter repository."),(0,a.kt)("h3",{id:"support"},"Support"),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4412"},"released")," ouroboros-consensus 0.3.0.0."),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4421"},"reduced")," the load in the ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," GitHub actions,\nthereby reducing the time CI jobs take."))}c.isMDXComponent=!0}}]);
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generators",id:"constraint-based-generators",level:3},{value:"Technical debt",id:"technical-debt",level:3}],d={toc:p},s="wrapper";function c(e){let{components:t,...r}=e;return(0,a.kt)(s,(0,n.Z)({},d,r,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,a.kt)("p",null,"The ledger team completed some preliminary ground work in preparation for CIP-1694\n(restructuring the ledger state),\nfixed the PDF hosting problem (mostly the formal specs),\nbuilt out more of the new user-friendly ledger API,\nfinished a proof of concept for constraint-based generators for property tests\n(with the hopes of being able to replace our trace generators one day),\nand addressed technical debt."),(0,a.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,a.kt)("h3",{id:"restructuring-the-ledger-state"},"Restructuring the ledger state"),(0,a.kt)("p",null,"The existing governance structures will be replace in the conway ledger era,\nas described in CIP-1694.\nIn particular, the ledger rules will be restructured as follows:"),(0,a.kt)("pre",null,(0,a.kt)("code",{parentName:"pre"},"   BBODY\n    |\n    |-------------------------------|\n    v                               v\n   TICK                            LEDGERS\n    |                               |\n    |---------|                     |\n    v         v                     v\n   RUPD     ~NEWEPOCH~            ~LEDGER~\n              |                     |\n              |----------|          |--------|-------------------|-----------|\n              v          v                   v                   v           v\n            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+\n              |                              |                   |\n              |---------|------------|       v                   |\n              v         v            v      DELPL                v\n             SNAP      POOLREAP    -UPEC-    |                  UTXO\n                                             |--------|          |\n                                             v        v          v\n                                            POOL     DELEG     ~UTXOS~\n\n-..- Removed\n+..+ Added\n~..~ Modified\n")),(0,a.kt)("p",null,"Moreover, the ledger state will also be restructured in accordance with the new rules.\nIn the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.\nWe have also adapted all the data structures in the ledger state."),(0,a.kt)("p",null,"See:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3216"},"pull-3216"))),(0,a.kt)("h3",{id:"pdf-hosting"},"PDF hosting"),(0,a.kt)("p",null,"We now build all of our PDFs using a GitHub action which is triggered by pushing a tag\nwith a specific form, ",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-ledger-spec-YYYY-MM-DD"),".\nThe action creates a GitHub release containing the PDFs.\nThe links in the main ledger README now point to the PDFs in the latest release."),(0,a.kt)("p",null,"See:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3245"},"pull-3245")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3260"},"pull-3260"))),(0,a.kt)("h3",{id:"powering-the-new-ledger-api"},"Powering the new ledger API"),(0,a.kt)("p",null,"We have now removed all the ",(0,a.kt)("inlineCode",{parentName:"p"},"HasField")," instances from the protocol parameter data types,\nand replaced them with lenses.\nThis is probably the last major restructuring that the ledger team will do on the code base\nfor the API for a while\n(the Plutus tools team will be working on it next, see ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/projects/5"},"here"),").\nWe also added a new helpful function ",(0,a.kt)("inlineCode",{parentName:"p"},"ensureMinCoinTxOut"),"."),(0,a.kt)("p",null,"See:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3242"},"pull-3242")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3248"},"pull-3248"))),(0,a.kt)("h3",{id:"constraint-based-generators"},"Constraint-based generators"),(0,a.kt)("p",null,"Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks\nwhich span several epochs, mimicking a real network.\nThese tests are, in theory, excellent for checking properties.\nThey are, however, very difficult to maintain and are not as random as we would like\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks)."),(0,a.kt)("p",null,"We would like to switch to tests which instead generate a random ledger state representative\nof not just an initial state, generate a single random valid block, and then test our properties.\nThe hope is that these will be much more random and easier to maintain."),(0,a.kt)("p",null,"We have finished a proof of concept are encouraged that this approach could work!"),(0,a.kt)("p",null,"See:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3219"},"pull-3219"))),(0,a.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3244"},"pull-3244")," massive CI speedup"),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3249"},"pull-3249")," better types for fees in the protocol 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Code ready for audit."),(0,n.kt)("li",{parentName:"ul"},"cardano-base: BLS12-381's PR approved, only blocker is Windows' CI. Preparing extensive testing strategy together with Plutus and Testing teams."),(0,n.kt)("li",{parentName:"ul"},"KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing."),(0,n.kt)("li",{parentName:"ul"},"Sidechains: Preparing proving system to use the curves needed for main-net PoC.  ")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Merged ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/783"},"PR#783")),(0,n.kt)("li",{parentName:"ul"},"RFP for crypto audit ready.")),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"BLS12-381 branch approved ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/266"},"PR#266"),". Blocker is Windown's CI. Working on it"),(0,n.kt)("li",{parentName:"ul"},"Testing strategy for BLS bindings:",(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Preparing test-vectors for Groth16, and simple BLS signatures"),(0,n.kt)("li",{parentName:"ul"},"Finding community projects to help write their use cases"),(0,n.kt)("li",{parentName:"ul"},"Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)"))),(0,n.kt)("li",{parentName:"ul"},"Wrote ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md"},"blogpost")," on how using the same key for ed25519 and VRF completely breaks the security of both systems ")),(0,n.kt)("h3",{id:"kes-agent"},"KES agent"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Started integration of sockets interface used in consensus"),(0,n.kt)("li",{parentName:"ul"},"Use that for de/ser"),(0,n.kt)("li",{parentName:"ul"},"Resolving problems with block memory in IOSim. 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Eg. the traversal of rewards could take\nplace in such bridge, instead of querying the ledger for the values that are\nrequired in the epoch-transition computations."),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4234"},"relocated")," some UTxO-HD definitions, in preparation for merging\nthe prototype into ",(0,a.kt)("inlineCode",{parentName:"p"},"master"),"."),(0,a.kt)("p",null,"We also completed updated local benchmarks comparing the replay time and memory\nconsumption of:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"the baseline node (",(0,a.kt)("inlineCode",{parentName:"li"},"f2fc76ef45647275c98634da1718290b976ff364"),") "),(0,a.kt)("li",{parentName:"ul"},"the UTxO-HD node with the in-memory backend "),(0,a.kt)("li",{parentName:"ul"},"the UTxO-HD node with the LMDB backend")),(0,a.kt)("p",null,"The following plot shows the results: we can see that the LMDB node barely\nreaches 8GB of memory, but it takes 1.78 times longer to replay the chain. 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We are in the process of measuring\nsyncing from scratch times."),(0,a.kt)("p",null,(0,a.kt)("img",{src:n(15253).Z,width:"2500",height:"1700"})),(0,a.kt)("p",null,"We also ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4263"},"added ",(0,a.kt)("inlineCode",{parentName:"a"},"StaticEither")," accessors")," that helped us to simplify\nthe UTxO-HD prototype."),(0,a.kt)("h3",{id:"new-conway-era"},"New Conway era"),(0,a.kt)("p",null,"We incorporated the feedback of the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3971"},"pull request"),", and rebased this\nbranch on top of ",(0,a.kt)("inlineCode",{parentName:"p"},"master"),". 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u(e){let{components:t,...n}=e;return(0,a.kt)(m,(0,r.Z)({},p,n,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,a.kt)("p",null,"Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:"),(0,a.kt)("ol",null,(0,a.kt)("li",{parentName:"ol"},"SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress."),(0,a.kt)("li",{parentName:"ol"},"The new tracing system:  the improved API of the new tracing system was implemented, and we're now porting the tracing integration layer over."),(0,a.kt)("li",{parentName:"ol"},"Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks."),(0,a.kt)("li",{parentName:"ol"},"New benchmark 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We completed the era-transition and backing store tests, and\nthe mempool tests are advancing at a steady pace. Regarding our work in the\nGenesis design, we continued our collaboration with the research and networking\nteams, and we continue investigating strategies for making the chain-sync\njumping prototype faster."),(0,r.kt)("h2",{id:"high-level-status-report"},"High-level status report"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish the UTxO HD prototype: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"We worked on state-machine tests for the mempool, and spotted potential bugs\nin the implementation. Investigation is ongoing."),(0,r.kt)("li",{parentName:"ul"},"We have a set of property tests for the backing store. We still need to\nincorporate the improvements to the LMDB cursor API that these tests\nmade possible."),(0,r.kt)("li",{parentName:"ul"},"We merged the era-transition tests PR."))),(0,r.kt)("li",{parentName:"ul"},"Genesis: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"Design work around Genesis continues in collaboration with researchers and\nthe networking team."),(0,r.kt)("li",{parentName:"ul"},"We continued trying to improve the performance of the chain-sync jumping\nprototype. We gained additional insight on which parameters to tweak next.\nIn spite of the baseline still being faster, the current prototype already\nachieves a significant speedup when compared to the naive approach of simply\nrunning full chain-sync with all peers."))),(0,r.kt)("li",{parentName:"ul"},"Tech debt: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"We clarified a common source of confusion around VRF tie-breaking and\ncross-era chain selection.")))),(0,r.kt)("h2",{id:"workstreams"},"Workstreams"),(0,r.kt)("h3",{id:"finish-the-utxo-hd-prototype"},"Finish the UTxO HD prototype"),(0,r.kt)("p",null,"We continued working on property-tests for the UTxO HD prototype. In particular\nwe merged the ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4073"},"era-transition tests\nPR"),"."),(0,r.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,r.kt)("p",null,"The ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4081"},"backing store property tests\nPR")," has been\nreviewed. The next steps are:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Improve error handling and command generation."),(0,r.kt)("li",{parentName:"ul"},"Add coverage testing to check that we are not failing to cover interesting\ntest cases.")),(0,r.kt)("p",null,"The ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"monadic cursor API"),"\nwent through its first review round. The API is in a relatively stable state.\nThis PR also unifies the ",(0,r.kt)("inlineCode",{parentName:"p"},"cborg")," and ",(0,r.kt)("inlineCode",{parentName:"p"},"serialise"),"-based interfaces to LMDB\noperations. The next steps are:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Write\n",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/quickcheck-dynamic"},(0,r.kt)("inlineCode",{parentName:"a"},"quickcheck-dynamic")),"\nstate-machine tests for this API."),(0,r.kt)("li",{parentName:"ul"},"Adapt the changes in the serialisation interface in the backing store property\ntests. This will involve adding boilerplate code in consensus to make up for\nthe removal of the ",(0,r.kt)("inlineCode",{parentName:"li"},"cborg"),"-based interface.")),(0,r.kt)("h2",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,r.kt)("p",null,"We worked on the ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4121"},"LSM tree\nprototype"),". In\nparticular, we focused on tuning the LSM tree design to the different workloads\nthat consensus has (eg syncing, normal node operation, etc)."),(0,r.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,r.kt)("p",null,'Work on improving the chain-sync jumping performance is ongoing. In particular\nwe compared the performance of different jump intervals, which, somewhat\nsurprisingly, do not make a significant difference. In particular, we are seeing\nperiodic "plateaus" where the chain-sync tip does not progress, but they are\nmuch longer for the prototype. Our hypothesis is that this seem to be due to a\ncombination of the garbage collector (GC) pauses, and the actual time it takes\nthe non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo\nfragment.'),(0,r.kt)("p",null,"In the coming weeks we will try to shorten these plateaus via a combination of\ntweaking GC options and less synchronisation in the CSJ governor."),(0,r.kt)("p",null,"The following plot shows the performance of the chain-sync jumping prototype\nusing different jumping intervals. It compares the syncing progress by plotting\nthe slots of adopted blocks against time. The baseline is still faster, however\nit is worth noting that the current prototype already achieves a significant\nspeedup when compared to the naive approach of simply running full chain-sync\nwith all peers."),(0,r.kt)("p",null,(0,r.kt)("img",{src:n(39294).Z,width:"998",height:"445"})),(0,r.kt)("p",null,'The second plot shows the syncing progress sliced to a chosen ~5min interval,\nand includes, in addition to the slots of adopted blocks, the slots of the tip\nof the ChainSync fragment. This allows us to see how far ahead of the selected\ntip the CS dynamo is, i.e. how much room we have for BlockFetch not to get\nstalled. It shows periodic behaviour (due to the forecasting limit), and shows\nthat the CS fragment tip is not progressing for significant periods\n("plateaus").'),(0,r.kt)("p",null,(0,r.kt)("img",{src:n(96185).Z,width:"998",height:"445"})),(0,r.kt)("h2",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"We ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4098"},"clarified")," a\ncommon source of confusion around VRF tie-breaking and cross-era chain\nselection. This PR involved correcting potentially misleading names of\nVRF-related functions, and providing context for a particular VRF value is\nused for tie-breaking."))}u.isMDXComponent=!0},96185:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg"},39294:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg"}}]);
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They showed a substantial performance regression, so we spent some\ntime analyzing the results. We found out the frequency at which ledger snapshots\nwere taken was too high, so we requested the benchmarking team a new run with a\nmore realistic snapshotting policy. We continued refactoring and improving the\nprototype, and we released UTxO-HD related packages to CHaP."),(0,r.kt)("p",null,"We met with IOG researchers and networking specialists to discuss the Genesis\ndesign, which was well received. We continued working on testing and\nbenchmarking different Genesis prototypes."),(0,r.kt)("p",null,"We are also working on solving a test failure related to iterators. This work\nderived in several improvements such as better documentation, a framework for\nwriting unit (and regression) tests, and the possibility of debugging\n",(0,r.kt)("inlineCode",{parentName:"p"},"QuickCheck")," counter examples in the REPL."),(0,r.kt)("p",null,"Finally, we released ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus")," 0.2.0.0 and\n",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus-cardano")," 0.3.0.0 to CHaP"),(0,r.kt)("h2",{id:"workstreams"},"Workstreams"),(0,r.kt)("h3",{id:"utxo-hd-prototype"},"UTxO HD Prototype"),(0,r.kt)("p",null,"We got the results of the first system level benchmarks for UTxO HD. They seemed\nto indicate a significant regression in performance. After looking into the\nbenchmark logs we found that the benchmark runs took ledger state snapshots too\noften, due to the default snapshotting policy depending on ",(0,r.kt)("inlineCode",{parentName:"p"},"k"),", and ",(0,r.kt)("inlineCode",{parentName:"p"},"k")," being so\nsmall in the benchmark runs. Therefore, the next step is to re-run the\nbenchmarks with a snapshotting policy that more closely resembles the one from\nmainnet."),(0,r.kt)("p",null,"At the same time, we continued refactoring and cleaning up the prototype. "),(0,r.kt)("p",null,"Also, we prepared the ",(0,r.kt)("inlineCode",{parentName:"p"},"anti-diff")," packages (",(0,r.kt)("inlineCode",{parentName:"p"},"fingertree-rm"),", ",(0,r.kt)("inlineCode",{parentName:"p"},"diff-containers"),",\n",(0,r.kt)("inlineCode",{parentName:"p"},"simple-semigroupoids"),") and the ",(0,r.kt)("inlineCode",{parentName:"p"},"lmdb")," related packages (",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-lmdb")," and\n",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-lmdb-simple"),") to ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-haskell-packages"},"CHaP"),"."),(0,r.kt)("h3",{id:"genesis"},"Genesis"),(0,r.kt)("p",null,"The Genesis design was presented to the IOG researchers and Peter Thompson from\nNSol. It was well received. They pointed out one blindspot, but we think it'll\nbe relatively simple to mitigate."),(0,r.kt)("p",null,"In parallel, we continued developing test and benchmarks for the Genesis\nprototypes. I particular we tested and implemented a potential fix for\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022"},"increased ChainDB dequeue timings"),", which partly\nbehaved as we expected, but still needs further investigation. Also we obtained\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031"},"new benchmarking data")," for the prototype."),(0,r.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"Related to ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4183"},"#4183"),", we developed a ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4379"},"DSL")," for specifying\n",(0,r.kt)("inlineCode",{parentName:"p"},"ChainDB")," unit tests. This will allow us to better understand the\ncounter-examples returned by QuickCheck tests, and to write ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4383"},"regression\ntests")," for them. Also, we ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4358"},"added a module")," to enable\nQuickCheck counter-examples to be run on the REPL, allowing for faster debugging\nfeedback. Also, we improved the documentation related to followers\n(",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4372"},"#4372"),")."),(0,r.kt)("p",null,"We are also working on a design for optimizing the way we handle blocks from the\nfuture."),(0,r.kt)("h3",{id:"support"},"Support"),(0,r.kt)("p",null,"We released ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus")," 0.2.0.0 and ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus-cardano"),"\n0.3.0.0 to CHaP. Remember that we decided to split the packages related to\nConsensus into two bundles, one with the core functionality, Cardano-agnostic\ncode, and another bundle with instantiations specific to Cardano."))}c.isMDXComponent=!0}}]);
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+"use strict";(self.webpackChunkcardano_updates=self.webpackChunkcardano_updates||[]).push([[2221],{4562:e=>{e.exports=JSON.parse('{"blogPosts":[{"id":"2023-12-06-ledger","metadata":{"permalink":"/cardano-updates/2023-12-06-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-06-ledger.md","source":"@site/blog/2023-12-06-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-12-06T00:00:00.000Z","formattedDate":"December 6, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.53,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-12-06-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-12-06-mithril"}},"content":"## High level summary\\n\\nThis period we reached a major milestone, namely we now have an initial version of Conway\\nconformance testing working. We are now able to generate random valid data with the help\\nof constraint based testing framework, apply that data to Conway Ledger rules and verify\\nthat the output matches to the one produced by the executable version of the Formal Ledger\\nSpecification, when it is applied to the same random data.\\n\\nWe also had a couple of Conway bugs fixed and a few new predicate check implemented. Get\\nConstitutional Committee query is complete and tested. Various improvements to the\\ntesting tools. Addition of more test cases.\\n\\n## Low level summary\\n\\n### Conway\\n\\n* [pull-3888] - Add checks for valid ProtVer when a proposal is a HardFork\\n* [pull-3902] - Fix pvCanFollow usage in Conway and improve clarity in Shelley\\n* [pull-3855] - Remove unreachable proposals\\n* [pull-3903] - Add lenient decoder for `Addr`\\n* [pull-3878] - Committee query - implement  next epoch change\\n\\n### Testing\\n\\n* [pull-3893] - Move `tree-diff` dependency to tests together with all instances\\n* [pull-3896] - Fix Brute force failure\\n* [pull-3904] - New ListWhere Pred added to the Constrained Solver.\\n* [pull-3907] - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file\\n* [pull-3883] - Committee QuerySpec Imp Test\\n* [pull-3909] - Make `impAnn` a bit more useful, by making the logs scoped by `impAnn`\\n* [pull-3908] - Use upstream testing instances for very basic types\\n* [pull-3912] - Removed call to tail, and the &#39;watchPulser&#39; test\\n* [pull-3852] - Added constrained generators to conformance tests - Part 1\\n\\n### Improvements and releasing\\n\\n* [pull-3891] - Bump plutus to 1.17\\n\\n[pull-3891]: https://github.com/input-output-hk/cardano-ledger/pull/3891\\n[pull-3888]: https://github.com/input-output-hk/cardano-ledger/pull/3888\\n[pull-3893]: https://github.com/input-output-hk/cardano-ledger/pull/3893\\n[pull-3896]: https://github.com/input-output-hk/cardano-ledger/pull/3896\\n[pull-3855]: https://github.com/input-output-hk/cardano-ledger/pull/3855\\n[pull-3904]: https://github.com/input-output-hk/cardano-ledger/pull/3904\\n[pull-3907]: https://github.com/input-output-hk/cardano-ledger/pull/3907\\n[pull-3903]: https://github.com/input-output-hk/cardano-ledger/pull/3903\\n[pull-3902]: https://github.com/input-output-hk/cardano-ledger/pull/3902\\n[pull-3883]: https://github.com/input-output-hk/cardano-ledger/pull/3883\\n[pull-3878]: https://github.com/input-output-hk/cardano-ledger/pull/3878\\n[pull-3909]: https://github.com/input-output-hk/cardano-ledger/pull/3909\\n[pull-3908]: https://github.com/input-output-hk/cardano-ledger/pull/3908\\n[pull-3852]: https://github.com/input-output-hk/cardano-ledger/pull/3852\\n[pull-3912]: https://github.com/input-output-hk/cardano-ledger/pull/3912"},{"id":"2023-12-06-mithril","metadata":{"permalink":"/cardano-updates/2023-12-06-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-06-mithril.md","source":"@site/blog/2023-12-06-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-12-06T00:00:00.000Z","formattedDate":"December 6, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.01,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-12-06-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-12-06-ledger"},"nextItem":{"title":"Performance & Tracing Update","permalink":"/cardano-updates/2023-12-04-performance-and-tracing"}},"content":"## High level overview\\n\\nThis week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator\'s performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.\\n\\nFinally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.\\n\\n## Low level overview\\n- Worked on the issue **Light Wallet: Release `mithril-client` WASM library** [#1336](https://github.com/input-output-hk/mithril/issues/1336)\\n- Worked on the issue **P2P threat modeling and risk analysis** [#1350](https://github.com/input-output-hk/mithril/issues/1350)\\n- Worked on the issue **Create a test network on `Sanchonet`** [#1173](https://github.com/input-output-hk/mithril/issues/1173)\\n- Worked on the issue **Upgrade breaking changes crates** [#1357](https://github.com/input-output-hk/mithril/issues/1357)\\n- Worked on the issue **Enhance Mithril/Cardano node communication** [#1315](https://github.com/input-output-hk/mithril/issues/1315)\\n- Completed the issue **Enhance aggregator REST API performances** [#1327](https://github.com/input-output-hk/mithril/issues/1327)\\n- Completed the issue **Signer runtime is stuck for some SPO** [#1312](https://github.com/input-output-hk/mithril/issues/1312)\\n- Completed the issue **Make `mithril-client` examples full crates** [#1385](https://github.com/input-output-hk/mithril/issues/1385)\\n- Completed the issue **Manual publication to crates.io with GitHub action** [#1380](https://github.com/input-output-hk/mithril/issues/1380)\\n- Completed the issue **Remove `sqlite` dependency from `mithril-client` crate** [#1390](https://github.com/input-output-hk/mithril/issues/1390)"},{"id":"2023-12-04-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-12-04-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-04-performance-and-tracing.md","source":"@site/blog/2023-12-04-performance-and-tracing.md","title":"Performance & Tracing Update","description":"High level summary","date":"2023-12-04T00:00:00.000Z","formattedDate":"December 4, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.085,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & Tracing Update","slug":"2023-12-04-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-12-06-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-12-01-hydra"}},"content":"## High level summary\\n\\n* Benchmarking: Release benchmarking for node `8.7.0`. Also, we performed the first-ever Conway benchmarks.\\n* Development: Conway capability of our workload generator has been implemented and merged to `master`.\\n* Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.\\n* Tracing: Quality-of-life improvements to tracing output and addition of a test suite.\\n* Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nA full set of benchmarks for node `8.7.0` has been performed, with the focus of enabling the next mainnet release. We\'ve measured slight performance improvements of `8.7.0` over `8.6.0`, and can confirm no regressions have been introduced.\\n\\nFurthermore, we\'ve run system integration level benchmarks in the Conway era for the first time, on the same node version.\\nOnly Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.\\n\\n### Development\\n\\nOur transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.\\nCurrently, we\'re looking into adding Conway-exclusive features, such as `DRep` registration. Those would be submitted at the very beginning of a run, as we\'re interested in seeing potential performance implications of maintaining `DRep` sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.\\n\\n### Infrastructure\\n\\nAs our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we\'ve\\nimproved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.\\n\\n### Tracing\\n\\nThe new tracing system is currently receiving usability improvements as we\'re reworking the output of several trace messages.\\nAdditionally, we\'re setting up a rigorous test suite to provide safety for future development of and component integration inte the system.\\n\\n### Nomad backend\\n\\nWe\'ve been working on adapting various benchmarking workloads, which are defined by our workbench\'s profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we\'re implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases."},{"id":"2023-12-01-hydra","metadata":{"permalink":"/cardano-updates/2023-12-01-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-12-01-hydra.md","source":"@site/blog/2023-12-01-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-12-01T00:00:00.000Z","formattedDate":"December 1, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.865,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-12-01-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & Tracing Update","permalink":"/cardano-updates/2023-12-04-performance-and-tracing"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-29-consensus"}},"content":"### High-level summary\\n\\nThis week, the Hydra team conducted a packed Monthly Review meeting,\\nfeaturing demonstrations and the preparation of the monthly report. They\\naddressed flakiness in tests and enhanced the logs json schema,\\nimproving overall test reliability. Additionally, the team successfully\\nbuilt MacOS ARM64 (`aarch64-darwin`) binaries in CI, expanding platform\\nsupport. They further improved the network configuration by detecting\\nincompatible persisted states, contributing to overall system\\nrobustness. Finally, the team released version 0.14.0, highlighting\\ntheir commitment to delivering regular updates and improvements.\\n\\n### What did the team achieve this week\\n\\n- Monthly Review\\n  [meeting](https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM)\\n  packed with demonstrations and prepared monthly report\\n  [\\\\#1189](https://github.com/input-output-hk/hydra/pull/1189)\\n- Fixed several flaky tests and improved the logs json schema\\n  [\\\\#1188](https://github.com/input-output-hk/hydra/pull/1188)\\n  [\\\\#1190](https://github.com/input-output-hk/hydra/issues/1190)\\n  [\\\\#1192](https://github.com/input-output-hk/hydra/pull/1192)\\n- Built MacOS ARM64 (`aarch64-darwin`) binaries in CI\\n  [\\\\#1182](https://github.com/input-output-hk/hydra/pull/1182)\\n- Improved network configuration by detecting incompatible persisted\\n  states [\\\\#1174](https://github.com/input-output-hk/hydra/issues/1174)\\n- Released version 0.14.0\\n\\n### What are the goals of next week\\n\\n- Start work on incremental decommit\\n- Continue shepherding contributed PRs to completion\\n- Finish stateless-observation work\\n- Open a head on a Conway network"},{"id":"2023-11-29-consensus","metadata":{"permalink":"/cardano-updates/2023-11-29-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-29-consensus.md","source":"@site/blog/2023-11-29-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-11-29T00:00:00.000Z","formattedDate":"November 29, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.51,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-11-29-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-12-01-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-29-mithril"}},"content":"## High level summary\\n\\nThe Consensus team implemented and tested a [patch](https://github.com/input-output-hk/ouroboros-consensus/pull/525) that does not propagate future headers.\\nIt is under review, and we expect it can be released in the next Cardano node version.\\nOn the UTxO-HD front, we [finished](https://github.com/input-output-hk/ouroboros-consensus/issues/510) prototyping the `LedgerDB` and `BackingStore` redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.\\nWith this prototype finished we can start integrating the rest of the code.\\nWe [investigated](https://github.com/input-output-hk/ouroboros-consensus/pull/513) the unexpected performance degradation observed when acquiring the block context.\\nWe also [released Cardano node 8.7.0](https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre) and [moved](https://github.com/input-output-hk/cardano-ledger/pull/3893) `tree-diff` outside `cardano-ledger` libraries."},{"id":"2023-11-29-mithril","metadata":{"permalink":"/cardano-updates/2023-11-29-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-29-mithril.md","source":"@site/blog/2023-11-29-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-11-29T00:00:00.000Z","formattedDate":"November 29, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.415,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-11-29-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-29-consensus"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-24-hydra"}},"content":"## High level overview\\n\\nThis week, the Mithril team released the initial version of the [Mithril client library](https://crates.io/crates/mithril-client), enabling developers to integrate core Mithril features into their applications. They also released a new distribution, [`2347.0`](https://github.com/input-output-hk/mithril/releases/tag/2347.0), which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.\\n\\nThe team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. \\n\\nFinally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.\\n\\n## Low level overview\\n- Release of the [`mithril-client`](https://crates.io/crates/mithril-client) library crate\\n- Publication of a [dev blog post](https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released) about the released Mithril library\\n- Released the new distribution [`2347.0`](https://github.com/input-output-hk/mithril/releases/tag/2347.0)\\n- Worked on the issue **Light Wallet: Release `mithril-client` WASM library** [#1336](https://github.com/input-output-hk/mithril/issues/1336)\\n- Worked on the issue **Enhance Mithril/Cardano node communication** [#1315](https://github.com/input-output-hk/mithril/issues/1315)\\n- Worked on the issue **P2P threat modeling and risk analysis** [#1350](https://github.com/input-output-hk/mithril/issues/1350)\\n- Worked on the issue **Enhance aggregator REST API performances** [#1327](https://github.com/input-output-hk/mithril/issues/1327)\\n- Worked on the issue **Signer runtime is stuck for some SPO** [#1312](https://github.com/input-output-hk/mithril/issues/1312)\\n- Completed the issue **Support P2P relay in infrastructure** [#1361](https://github.com/input-output-hk/mithril/issues/1361)\\n- Completed the issue **Make Cardano node version custom in CI/CD** [#1355](https://github.com/input-output-hk/mithril/issues/1355)\\n- Completed the issue **Manually deploy a test Mithril network** [#1356](https://github.com/input-output-hk/mithril/issues/1356)\\n- Completed the issue **mithril-client verbosity not following usage menu** [#1325](https://github.com/input-output-hk/mithril/issues/1325)\\n- Completed the issue **Error message for mithril-client snapshot download** [#1375](https://github.com/input-output-hk/mithril/issues/1375)"},{"id":"2023-11-24-hydra","metadata":{"permalink":"/cardano-updates/2023-11-24-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-24-hydra.md","source":"@site/blog/2023-11-24-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-11-24T00:00:00.000Z","formattedDate":"November 24, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.12,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-11-24-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-29-mithril"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-11-24-sre"}},"content":"### High-level summary\\n\\nThis week, the Hydra team spent significant time opening a head among\\nthemselves on `mainnet` using the release candidate, revealing and\\naddressing lurking bugs such as\\n[\\\\#1174](https://github.com/input-output-hk/hydra/issues/1174). Also\\nrequired was this change to dynamically calculate the min utxo value\\n[\\\\#1176](https://github.com/input-output-hk/hydra/pull/1176), a\\nnecessary adjustment following the switch to inline datums. The team\\nengaged with `cardano-cli` / `cardano-api` maintainers to discuss recent\\nchanges and collaborated on drafting feature ideas, including providing\\n[Conway support](https://github.com/input-output-hk/hydra/issues/1177)\\nfor the Hydra roadmap. As part of ongoing improvements, they\\nexperimented with writing the specification in markdown instead of\\nLaTex.\\n\\n### What did the team achieve this week\\n\\n- Opened head among us on mainnet and uncovered a few lurking bugs like\\n  [\\\\#1174](https://github.com/input-output-hk/hydra/issues/1174) in the\\n  release candidate\\n- Calculate the min utxo value instead of hard-coding it\\n  [\\\\#1176](https://github.com/input-output-hk/hydra/pull/1176), which is\\n  needed since we switched to inline datums.\\n- Met with the `cardano-cli` / `cardano-api` maintainers to discuss\\n  recent changes and way forward\\n- Drafted features ideas to provide [Conway\\n  support](https://github.com/input-output-hk/hydra/issues/1177) on the\\n  Hydra roadmap\\n- Experimented in writing the specification in markdown instead of LaTex\\n\\n### What are the goals of next week\\n\\n- Have the Monthly review meeting with several demos\\n- Release version 0.14.0 with [this\\n  scope](https://github.com/input-output-hk/hydra/milestone/14?closed=1)\\n- Complete tidying up chain layer via stateless observation changes in\\n  hydra-node\\n  [\\\\#1096](https://github.com/input-output-hk/hydra/issues/1096)\\n- Update dependencies to prepare for Conway\\n  [\\\\#1114](https://github.com/input-output-hk/hydra/issues/1114)"},{"id":"2023-11-24-sre","metadata":{"permalink":"/cardano-updates/2023-11-24-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-24-sre.md","source":"@site/blog/2023-11-24-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-11-24T00:00:00.000Z","formattedDate":"November 24, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":3.115,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-11-24-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-24-hydra"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-11-22-ledger"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent changes, updates or improvements include:\\n* The cardano-node nixos service now supports SIGHUP p2p topology reloading when the `useSystemdReload` option is enabled\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Update cardano-db-sync and offchain-metadata-tools package paths and/or references: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f)\\n\\n### Cardano-node\\n* Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: [cardano-node-pull-5537](https://github.com/input-output-hk/cardano-node/pull/5537)\\n  * Creates a useSystemdReload bool option for the cardano-node nixos service\\n  * This will move the topology file(s) to `/etc/cardano-node/topology-$i.yaml` and inject systemd reload hooks for p2p configured cardano-node instances\\n  * Moving topology files to `/etc` also allows for manual topology updates when a quick test is needed and full service re-deployment isn\'t desired\\n\\n### Cardano-parts\\n* Adds a metadata server profile and a number of other features and improvements: [cardano-parts-pull-20](https://github.com/input-output-hk/cardano-parts/pull/20)\\n  * Adds a new metadata-service profile\\n  * Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile\\n  * Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster\'s static needs, with each cached behind varnish\\n  * Adds extra node list producers and public producers for cardano-node-topology profile\\n  * Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch\\n  * Adds select systemd metrics reporting to grafana-agent profile\\n  * Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS\\n  * Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it\\n  * Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo\\n  * Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation\\n  * Adds support for grafana recording rules in the template files\\n  * Improves cardano-group profile handling of producers with respect to multiple instance nodes\\n  * Improves grafana-agent profile metrics handling for multi-instance cardano-node servers\\n  * Improves smash service preStart handling while waiting for a node socket\\n  * Updates Justfile for ERA_CMD demo support\\n  * Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates\\n  * Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile\\n  * Defaults cardano-postgres profile psqlrc use to false\\n\\n### Cardano-playground\\n* Adds a new testnet metadata server, cluster webserver, and other improvements: [cardano-playground-pull-6](https://github.com/input-output-hk/cardano-playground/pull/6)\\n  * Adds a new metadata server\\n  * Adds a new webserver for the cluster\'s static virtualhost needs\\n  * Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo\\n  * Adds systemd metrics monitoring to the cluster\\n  * Resizes sanchonet machines to support the growing chain\\n  * Completes migration of preprod from world\\n  * Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes\\n  * Updates Justfile for ERA_CMD demo support\\n  * Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile\\n  * Migrates book static code to playground from world, with refactor, cleanup and updates\\n  * Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules\\n\\n### Offchain-metadata-tools\\n* Adds db password option with obfuscation plus misc improvements: [offchain-metadata-tools-pull-61](https://github.com/input-output-hk/offchain-metadata-tools/pull/61)\\n  * Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services\\n  * Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile\\n  * Moves from std use in the nix flake to standard flake schema\\n  * Fixes hydra CI failures\\n  * Builds update-docs in hydra to avoid long local build times\\n  * Removes deprecated tullia\\n  * Removes deprecated check-hydra from pkgs\\n  * Removes deprecated bors files and references"},{"id":"2023-11-22-ledger","metadata":{"permalink":"/cardano-updates/2023-11-22-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-22-ledger.md","source":"@site/blog/2023-11-22-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-11-22T00:00:00.000Z","formattedDate":"November 22, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.705,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-11-22-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-11-24-sre"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-22-mithril"}},"content":"## High level summary\\n\\nLast two weeks progress was mainly on testing, bug fixes and improvements to clarity of\\nCDDL specification. Important bugfixes include:\\n\\n* Fix deserialization of `ValueNotConservedUTxO` predicate failure that could not\\n  previously report zero ADA.\\n* Fix deserialization of `CostModels` in the `PParamsUpdate`. Invalid `CostModels` are no\\n  longer allowed, only `CostModels` for unrecognized Plutus versions are allowed starting\\n  with Conway\\n* Fix returning of Deposits for ProposalProcedures\\n\\nTesting tooling has been improved and new tests have been implemented for Conway era.\\n\\n## Low level summary\\n\\n### Conway\\n\\n* [pull-3858] - Restructure computing Refunds and Deposits in a TxBody across all eras\\n* [pull-3860] - Removed `mock/crypto.cddl`, added optional tag to sets\\n* [pull-3864] - Fix Proposal deposits and add deposit tests to imp tests\\n* [pull-3859] - Rename ProposalsSnapshot to Proposals\\n* [pull-3867] - `MaryValue` fixes\\n* [pull-3869] - Indicate that tag 258 is optional for OSet. Fix rational CDDL\\n* [pull-3863] - Improve deposits refunds re-usability\\n* [pull-3861] - Fail PParamsUpdate deserialization for invalid costmodels in Conway\\n* [pull-3875] - Fix cddl spec for CostModels in Conway\\n* [pull-3876] - Change 4 PParam fields from EpochNo to EpochInterval\\n* [pull-3884] - Relax requirement on the Set tag 258 to be enforced in the next era\\n\\n### Testing\\n\\n* [pull-3868] - Improvements to support property tests on Traces with simple Tx with DRep related Certs\\n* [pull-3792] - RATIFY and GOV constraint tests\\n* [pull-3885] - Added a test for genTxAndNewEpoch\\n* [pull-3886] - QuickCheck Imp integration\\n\\n### Improvements and releasing\\n\\n* [pull-3854] - Integration work for node 8.7.0\\n* [pull-3872] - Fixup ReadTheDocs build\\n* [pull-3871] - Bump plutus dep to 1.16\\n* [pull-3874] - Post release changes\\n* [pull-3880] - Remove generic-monoid dependency\\n* [pull-3887] - Add changelog for features that landed in cardano-node-8.7\\n\\n[pull-3858]: https://github.com/input-output-hk/cardano-ledger/pull/3858\\n[pull-3860]: https://github.com/input-output-hk/cardano-ledger/pull/3860\\n[pull-3864]: https://github.com/input-output-hk/cardano-ledger/pull/3864\\n[pull-3859]: https://github.com/input-output-hk/cardano-ledger/pull/3859\\n[pull-3867]: https://github.com/input-output-hk/cardano-ledger/pull/3867\\n[pull-3869]: https://github.com/input-output-hk/cardano-ledger/pull/3869\\n[pull-3863]: https://github.com/input-output-hk/cardano-ledger/pull/3863\\n[pull-3854]: https://github.com/input-output-hk/cardano-ledger/pull/3854\\n[pull-3861]: https://github.com/input-output-hk/cardano-ledger/pull/3861\\n[pull-3872]: https://github.com/input-output-hk/cardano-ledger/pull/3872\\n[pull-3871]: https://github.com/input-output-hk/cardano-ledger/pull/3871\\n[pull-3875]: https://github.com/input-output-hk/cardano-ledger/pull/3875\\n[pull-3874]: https://github.com/input-output-hk/cardano-ledger/pull/3874\\n[pull-3868]: https://github.com/input-output-hk/cardano-ledger/pull/3868\\n[pull-3880]: https://github.com/input-output-hk/cardano-ledger/pull/3880\\n[pull-3792]: https://github.com/input-output-hk/cardano-ledger/pull/3792\\n[pull-3876]: https://github.com/input-output-hk/cardano-ledger/pull/3876\\n[pull-3885]: https://github.com/input-output-hk/cardano-ledger/pull/3885\\n[pull-3884]: https://github.com/input-output-hk/cardano-ledger/pull/3884\\n[pull-3887]: https://github.com/input-output-hk/cardano-ledger/pull/3887\\n[pull-3886]: https://github.com/input-output-hk/cardano-ledger/pull/3886"},{"id":"2023-11-22-mithril","metadata":{"permalink":"/cardano-updates/2023-11-22-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-22-mithril.md","source":"@site/blog/2023-11-22-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-11-22T00:00:00.000Z","formattedDate":"November 22, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.895,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-11-22-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-11-22-ledger"},"nextItem":{"title":"Initial CIP 1694 Security Analysis and Responses","permalink":"/cardano-updates/2023-11-20-cip1694"}},"content":"## High level overview\\n\\n\\nThis week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.\\n\\nFinally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.\\n\\n## Low level overview\\n- Completed the issue **Prototype a P2P relay with `libp2p`** [#1326](https://github.com/input-output-hk/mithril/issues/1326)\\n- Worked on the issue **Enhance aggregator REST API performances** [#1327](https://github.com/input-output-hk/mithril/issues/1327)\\n- Worked on the issue **Signer runtime is stuck for some SPO** [#1312](https://github.com/input-output-hk/mithril/issues/1312)\\n- Completed the issue **Manually deploy a test Mithril network** [#1356](https://github.com/input-output-hk/mithril/issues/1356)\\n- Completed the issue **Make Cardano node version custom in CI/CD** [#1355](https://github.com/input-output-hk/mithril/issues/1355)\\n- Worked on the issue **Support P2P relay in infrastructure** [#1361](https://github.com/input-output-hk/mithril/issues/1361)\\n- Completed the issue **mithril-client fails to extract archive** [#1352](https://github.com/input-output-hk/mithril/issues/1352)"},{"id":"2023-11-20-cip1694","metadata":{"permalink":"/cardano-updates/2023-11-20-cip1694","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-20-cip1694.md","source":"@site/blog/2023-11-20-cip1694.md","title":"Initial CIP 1694 Security Analysis and Responses","description":"High level summary","date":"2023-11-20T00:00:00.000Z","formattedDate":"November 20, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"},{"label":"cip1694","permalink":"/cardano-updates/tags/cip-1694"},{"label":"security","permalink":"/cardano-updates/tags/security"}],"readingTime":5.345,"hasTruncateMarker":false,"authors":[{"name":"Kevin Hammond","title":"Head of Software Engineering, Cardano Core","url":"https://github.com/kevinhammond","imageURL":"https://github.com/kevinhammond.png","key":"kevinhammond"}],"frontMatter":{"title":"Initial CIP 1694 Security Analysis and Responses","slug":"2023-11-20-cip1694","authors":"kevinhammond","tags":["ledger","cip1694","security"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-22-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-17-hydra"}},"content":"## High level summary\\n\\nWe have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.\\n\\n## Initial CIP-1694 Security Analysis and Responses\\n\\n### Section: The constitutional committee\\n\\n---\\n\\n- \u201cFor example, if we consider the hypothetical Constitution rule \\"The Cardano network must always be able to produce new blocks\\" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.\\n\\nThere is a \'guardrails document\' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.\\n\\n---\\n\\n### Section: Size of the constitutional committee\\n\\n---\\n\\n- A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.\\n\\nThanks. Yes, we\u2019ve been thinking about this issue for a long time, see for example the section \u2018Final safety measure, post bootstrapping\u2019. We don\u2019t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps\\n\\n---\\n\\n### Section: Terms\\n\\n---\\n\\n- The following sentence is a bit awkward to read: \u201cFor example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d \u2014> Suggestion: \u201cFor example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d \\n\\nThanks. Yes, that suggestion is a bit easier to read.\\n\\n---\\n\\n### Section: Registered DReps\\n\\n---\\n\\n- \u201cAdditionally, registered DReps will need to vote regularly to still be considered active.\u201d - There is a minor issue with requiring \u201cvoting regularly\u201d. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).\\n\\nThanks. We\u2019ve added a mechanism to prevent that issue in the spec/code where if there\u2019s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.\\n\\n---\\n\\n### Section: Ratification\\n\\n---\\n\\n- It is a bit unclear why protocol changes: network group and technical group are two separate groups.\\n \\nThese correspond exactly to the groups that are administered by the Parameter Committee.\\n\\n---\\n\\n- I didn\u2019t understand the rationale for requiring 100% \u201cYes\u201d votes to pass \u201cInfo\u201d type governance actions? It seems they have the least potential to harm the system.\\n\\nYes, it\u2019s not about harming the system, since `Info` \\nactions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. \\n\\nOnce an action is enacted it\u2019s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.\\n\\n---\\n\\n### Section: Content\\n\\n---\\n\\n- For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.\\n\\nProtocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.\\n\\n---\\n\\n### Section: Protocol Parameter groups\\n\\n---\\n\\n- It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.\\n\\nThese are existing protocol parameters, described in e.g. [https://cips.cardano.org/cips/cip9/](https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time.)9 or [The Cardano Protocol Parameters Guide](https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time.).\\n\\n\\n---\\n\\n- With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. \\n\\nAll of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.\\n\\n---\\n\\n### Section: Votes\\n\\n---\\n\\n- Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?\\n\\nThey may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don\u2019t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.\\n\\n---\\n\\n\\n### Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes\\n\\n---\\n\\n- It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.\\n\\nThere is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.\\n\\n---\\n\\n### Section: Changes post Edinburgh workshop (July 2023)\\n\\n---\\n\\n- \u201cAll governance actions are enacted one epoch after they are ratified.\u201d - I\u2019m not sure if this line is currently in the main body of the CIP?\\n\\nIt is, but it is phrased differently: \u2018All governance actions are enacted on the epoch boundary after their ratification.\u2019\\n\\n---\\n\\n### Section: Reduced deposits for some government actions\\n\\n---\\n\\n- Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.\\n\\nIndeed. We have no plans for this at the moment."},{"id":"2023-11-17-hydra","metadata":{"permalink":"/cardano-updates/2023-11-17-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-17-hydra.md","source":"@site/blog/2023-11-17-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-11-17T00:00:00.000Z","formattedDate":"November 17, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.135,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-11-17-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Initial CIP 1694 Security Analysis and Responses","permalink":"/cardano-updates/2023-11-20-cip1694"},"nextItem":{"title":"Performance & Tracing Update","permalink":"/cardano-updates/2023-11-17-performance-and-tracing"}},"content":"## High-level summary\\n\\nThis week, the Hydra team made several impactful updates. They addressed\\nmisleading errors regarding collect com transactions, resolved a security\\nadvisory (CVE-2023-42806), and simplified the Hydra Head protocol by using\\ninline datums. The team also tackled minor inconsistencies in specifications and\\nimplementation, documented reasons for potentially dropped close transactions by\\nthe cardano-node, and collaborated with SundaeLabs on an offline mode for\\n`hydra-node`. Additionally, they engaged in discussions with researchers about\\nincremental de-/commits.\\n\\n## What did the team achieve this week\\n\\n-   Removed misleading errors about collect com transactions [#839](https://github.com/input-output-hk/hydra/issues/839)\\n-   Addressed security advisory [CVE-2023-42806](https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq) in PR [#1161](https://github.com/input-output-hk/hydra/pull/1161)\\n-   Changed the head protocol to use inline datums, simplifying things in the hydra-node [#1162](https://github.com/input-output-hk/hydra/pull/1162)\\n-   Addressed minor inconsistencies in spec and implementation [#1104](https://github.com/input-output-hk/hydra/issues/1104)\\n-   Documented why close transacations might be dropped by the cardano-node (can&rsquo;t fix) [#1039](https://github.com/input-output-hk/hydra/issues/1039)\\n-   Tidy up a few things here and there\\n-   Worked with SundaeLabs on the offline mode for `hydra-node`\\n-   Discussed incremental de-/commits with researchers\\n\\n## What are the goals of next week\\n\\n-   Start work on incremental decommits protocol specification [#1057](https://github.com/input-output-hk/hydra/issues/1057)\\n-   Provide support to Hypix\\n-   Address all [open bugs](https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A)\\n-   Release version 0.14.0 with [this scope](https://github.com/input-output-hk/hydra/milestone/14?closed=1)\\n-   Update dependencies to prepare for Conway [#1114](https://github.com/input-output-hk/hydra/issues/1114)\\n-   Shepherd off-line mode PR over the finish line\\n-   Complete tidying up chain layer via stateless observation changes in hydra-node [#1096](https://github.com/input-output-hk/hydra/issues/1096)"},{"id":"2023-11-17-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-11-17-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-17-performance-and-tracing.md","source":"@site/blog/2023-11-17-performance-and-tracing.md","title":"Performance & Tracing Update","description":"High level summary","date":"2023-11-17T00:00:00.000Z","formattedDate":"November 17, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.585,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & Tracing Update","slug":"2023-11-17-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-17-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-11-16-network"}},"content":"## High level summary\\n\\n* Benchmarking: Release benchmarking for node `8.6.0` as well as benchmarks scrutinizing GHC versions and the new tracing system.\\n* Development: PlutusV3 capability of our workload generator has been implemented.\\n* Tracing: First round of optimization of the `cardano-tracer` service has completed, awaiting validation.\\n* Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.\\n* Workbench: Configurable remote environments and improvements to run documentation have been merged to `master`.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nWe\'ve performed and analyzed a full set of benchmarks for node `8.6.0`, both in comparison to recent release tags\\nand mainnet version `8.1.2`. A lot of development work has entered the system since then, so it is crucial\\nwe can rule out any potential performance risks for the next mainnet release.   \\n\\nAdditionally, we\'ve been benchmarking GHC9.6.3 builds of `cardano-node`. Overall, we\'ve observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we\'ve seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. \\n\\nA last set of benchmarks was dedicated to the new tracing system with node `8.6.0`. We were able to show that\\nthere is no performance risk to enabling the new system, even when forwarding all trace messages to a `cardano-tracer`\\nservice on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.\\n\\n### Development\\n\\nFor future benchmarks to be built around PlutusV3, we\'ve equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes\\nto the execution budgets by developing specialized workloads.\\n\\n### Tracing\\n\\nThe `cardano-tracer` service has received its first batch of optimizations. Profiling output is promising; to measure\\nperformance for a long service run time, we\'re currently equipping the service binary with the same capability to\\nemit regular resource traces as `cardano-node`. Analysis of those will be the basis for validating this and possible future optimization efforts.\\n\\n### Nomad backend\\n\\nMany improvements for the nomad backend have been implemented and merged to `master`. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,\\nmore detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables\\nour team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.\\n\\n### Workbench\\n\\nOur performance workbench has seen upgrades in documenting and reporting `cardano-node` builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.\\nWhen alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  \\n\\nFurthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance."},{"id":"2023-11-16-network","metadata":{"permalink":"/cardano-updates/2023-11-16-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-16-network.md","source":"@site/blog/2023-11-16-network.md","title":"Network Team Update","description":"High-level overview of sprint 48","date":"2023-11-16T00:00:00.000Z","formattedDate":"November 16, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":0.545,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-11-16-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & Tracing Update","permalink":"/cardano-updates/2023-11-17-performance-and-tracing"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-15-consensus"}},"content":"## High-level overview of [sprint 48][sprint-48]\\n\\n### Bootstrap Peers\\n\\nWe continued reviewing bootstrap peers, [ouroboros-network#4555].\\n\\n### IOClasses / IOSim\\n\\nWe prepared slides for a Haskell meetup were we presented a talk on `IOSimPOR`.\\nThe recording will be availble on `YouTube`.\\n\\nWe also used the opportunity to do some refactoring of the `IOSim` code base: [io-sim#117].\\nWe released `io-sim-1.3.0.0` on `Hackage`: [io-sim#119].\\n\\nWe also added `forkFinally` to `MonadFork` (not included in `1.3.0.0` release): [io-sim#123].\\n\\n### Tech debt\\n\\nWe refactored `Resource` used by the DNS subsystem: [ouroboros-network#4707].\\nWe continued reviewing the [ouroboros-network#4625] PR, which refactors\\n`RootPeersDNS` module.\\n\\n[io-sim#117]: https://github.com/input-output-hk/io-sim/pull/117\\n[io-sim#119]: https://github.com/input-output-hk/io-sim/pull/119\\n[io-sim#123]: https://github.com/input-output-hk/io-sim/pull/123\\n[ouroboros-network#4555]: https://github.com/input-output-hk/ouroboros-network/pull/4555\\n[ouroboros-network#4625]: https://github.com/input-output-hk/ouroboros-network/pull/4625\\n[ouroboros-network#4707]: https://github.com/input-output-hk/ouroboros-network/pull/4707\\n[sprint-48]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22"},{"id":"2023-11-15-consensus","metadata":{"permalink":"/cardano-updates/2023-11-15-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-15-consensus.md","source":"@site/blog/2023-11-15-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-11-15T00:00:00.000Z","formattedDate":"November 15, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.34,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-11-15-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-11-16-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-15-mithril"}},"content":"## High level summary\\n\\nOver the last two weeks, we managed to run a UTxO-HD capable node in _legacy mode_, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).\\nThis _legacy mode_ could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.\\nHowever, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.\\nOn the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.\\nTherefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.\\n\\nOn the Genesis front, we reviewed the [peer simulator](https://github.com/input-output-hk/ouroboros-consensus/pull/434) for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.\\n\\nWe also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.\\n\\n[Javier Sagredo](https://github.com/jasagredo) continues his cycle as release engineer, and he is working on version 8.7 of Cardano node."},{"id":"2023-11-15-mithril","metadata":{"permalink":"/cardano-updates/2023-11-15-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-15-mithril.md","source":"@site/blog/2023-11-15-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-11-15T00:00:00.000Z","formattedDate":"November 15, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.92,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-11-15-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-15-consensus"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-11-14-node-cli-api"}},"content":"## High level overview\\n\\nThis week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.\\n\\nFinally, they continued addressing some performance issue associated with the \'release-mainnet\' aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.\\n\\n## Low level overview\\n- Worked on the issue **Prototype a P2P relay with `libp2p`** [#1300](https://github.com/input-output-hk/mithril/issues/1300)\\n- Completed the issue **Light Wallet: Release `mithril-client` library** [#1311](https://github.com/input-output-hk/mithril/issues/1311)\\n- Completed the issue **Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Completed the issue **`release-mainnet` aggregator is unreachable** [#1310](https://github.com/input-output-hk/mithril/issues/1310)\\n- Completed the issue **Fix certificate hashes re-computation in aggregator** [#1343](https://github.com/input-output-hk/mithril/issues/1343)\\n- Completed the issue **Remove `unstable` tag in `unstable` release** [#1235](https://github.com/input-output-hk/mithril/issues/1235)\\n- Worked on the issue **Enhance aggregator REST API performances** [#1327](https://github.com/input-output-hk/mithril/issues/1327)\\n- Worked on the issue **Signer runtime is stuck for some SPO** [#1312](https://github.com/input-output-hk/mithril/issues/1312)"},{"id":"2023-11-14-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-11-14-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-14-node-cli-api.md","source":"@site/blog/2023-11-14-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-11-14T00:00:00.000Z","formattedDate":"November 14, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.155,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-11-14-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-15-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-10-hydra"}},"content":"# 2023-11-01 - 2023-11-14\\n\\n## High level summary\\n\\nCARDANO-NODE\\n- [Pre-release of Cardano Node 8.6.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre)\\n\\nCARDANO-CLI\\n- Improve golden tests\\n- Clean-up of conway era commands\\n\\n### cardano-cli\\n- [Replace usages of assertFileOccurences (6/6)](https://github.com/input-output-hk/cardano-cli/pull/451)\\n- [Replace usages of assertFileOccurences (5/6)](https://github.com/input-output-hk/cardano-cli/pull/448)\\n- [Replace usages of assertFileOccurences by usage of new functions \u2728 (4/n)](https://github.com/input-output-hk/cardano-cli/pull/444)\\n- [put n shelley/byron key witnesses arguments in correct order](https://github.com/input-output-hk/cardano-cli/pull/443)\\n- [Replace usages of assertFileOccurences by comparisons with golden files (3/n)](https://github.com/input-output-hk/cardano-cli/pull/441)\\n- [Replace usages of assertFileOccurences by comparisons with golden files (2/n)](https://github.com/input-output-hk/cardano-cli/pull/436)\\n- [Update to `cardano-8.31.0.0`](https://github.com/input-output-hk/cardano-cli/pull/435)\\n- [Remove remaining uses of `IsCardanoEra`](https://github.com/input-output-hk/cardano-cli/pull/434)\\n- [Release 8.14.0.0](https://github.com/input-output-hk/cardano-cli/pull/432)\\n- [Upgrade cardano-api to 8.30](https://github.com/input-output-hk/cardano-cli/pull/430)\\n- [Command types for `node` commands](https://github.com/input-output-hk/cardano-cli/pull/428)\\n- [Split governance `MIRTransferConstructor`](https://github.com/input-output-hk/cardano-cli/pull/427)\\n- [Replace usages of assertFileOccurences by comparisons with golden files (1/n)](https://github.com/input-output-hk/cardano-cli/pull/426)\\n- [Command argument types for `drep` commands](https://github.com/input-output-hk/cardano-cli/pull/425)\\n- [Add golden test for `governance action create-no-confidence`](https://github.com/input-output-hk/cardano-cli/pull/421)\\n- [Command arguments types for stake-pool commands](https://github.com/input-output-hk/cardano-cli/pull/419)\\n\\n\\n### cardano-api\\n- [New version `cardano-api-8.31.0.0`](https://github.com/input-output-hk/cardano-api/pull/364)\\n- [Use ledger presentation of multi-asset values directly.  Lens to make this uniform over `ShelleyBasedEra`](https://github.com/input-output-hk/cardano-api/pull/360)\\n- [Protocol version change is not common to all versions anymore](https://github.com/input-output-hk/cardano-api/pull/358)\\n- [Delete `ByronAndAllegraEraOnwards`](https://github.com/input-output-hk/cardano-api/pull/355)\\n- [Replace `IsCardanoEra` and `IsShelleyBasedEra` contraints in GADT constructors with `Typeable`](https://github.com/input-output-hk/cardano-api/pull/354)\\n- [Modify foldBlocks to recurse on ledger events ](https://github.com/input-output-hk/cardano-api/pull/353)\\n- [Add generators for `EraBasedProtocolParametersUpdate`](https://github.com/input-output-hk/cardano-api/pull/352)\\n- [New version `cardano-api-8.30.0.0`](https://github.com/input-output-hk/cardano-api/pull/351)\\n\\n### cardano-node\\n- [Pre-release of Cardano Node 8.6.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre)\\n- - [cardano-node: use ouroboros-network-protocols-0.5.2](https://github.com/input-output-hk/cardano-node/pull/5525)\\n\\n\\n### cardano-testnet\\n\\n### docs\\n\\n### CI & project maintenance"},{"id":"2023-11-10-hydra","metadata":{"permalink":"/cardano-updates/2023-11-10-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-10-hydra.md","source":"@site/blog/2023-11-10-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-11-10T00:00:00.000Z","formattedDate":"November 10, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.65,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-11-10-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-11-14-node-cli-api"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-11-10-sre"}},"content":"### High-level summary\\n\\nThe last two weeks, the Hydra team achieved several milestones. They published\\nthe monthly report for October, providing updates on project developments. The\\nteam delivered a presentation and workshop at the Cardano Summit, contributing\\nto community engagement. They implemented a \\\\\\"dirt road\\\\\\" solution for the\\n\\\\\\"Ignored init tx\\\\\\" notification and moved the `hydra-poll` example project to a\\ndedicated repository. Additionally, the team built a `hydra-chain-observer` tool\\nfor Hydra Heads, updated the toolchain to GHC 9.6.3, and made various\\nimprovements to tooling and code formatting. They addressed specific issues,\\nsuch as fixing the `gen-hydra-keys` command and resolving concerns with the\\nrewritten `hydra-tui`. The team also enhanced the `hydra-cluster` smoke test\\nsuite by fetching network configurations dynamically. Lastly, they actively\\nreviewed pull requests and architectural decision records from the community,\\nincluding contributions from SundaeSwap. An experiment, the Hydra tally, was\\ncompleted and successfully deployed to the mainnet by the Cardano Foundation.\\n\\n### What did the team achieve this week\\n\\n-   Published the monthly [report for\\n    october](https://hydra.family/head-protocol/monthly/2023-10)\\n-   Given a presentation / workshop at the Cardano summit\\n    [#1109](https://github.com/input-output-hk/hydra/issues/1109)\\n-   Dirt road implementation for \\\\\\"Ignored init tx\\\\\\" notification\\n    [#529](https://github.com/input-output-hk/hydra/issues/529) (without\\n    stateless observation)\\n-   Completed and moved `hydra-poll` example project into a\\n    dedicated\\n    [repository](https://github.com/cardano-scaling/hydra-poll)\\n-   Built a first version of a chain observation tool for Hydra Heads\\n    [#1096](https://github.com/input-output-hk/hydra/issues/1096)\\n-   Switched toolchain to GHC 9.6.3 and various improvements on tooling\\n    and code formatting\\n    [#1135](https://github.com/input-output-hk/hydra/pull/1135)\\n    [#1152](https://github.com/input-output-hk/hydra/pull/1152)\\n    [#1151](https://github.com/input-output-hk/hydra/pull/1151)\\n    [#1154](https://github.com/input-output-hk/hydra/pull/1154)\\n-   Fix `gen-hydra-keys` command to not overwrite existing\\n    keys [#1136](https://github.com/input-output-hk/hydra/issues/1136)\\n-   Fixed the rewritten `hydra-tui`\\n    [#1113](https://github.com/input-output-hk/hydra/issues/1113)\\n    [#1137](https://github.com/input-output-hk/hydra/issues/1137)\\n-   Fetch network configurations instead of packaging them into\\n    hydra-cluster (smoke) test suite\\n    [#1156](https://github.com/input-output-hk/hydra/pull/1156)\\n-   Reviewing PRs and ADRs from the community (SundaeSwap)\\n    [#1118](https://github.com/input-output-hk/hydra/pull/1118)\\n    [#1157](https://github.com/input-output-hk/hydra/pull/1157)\\n-   Hydra tally experiment (Cardano Foundation) deployed to mainnet\\n\\n### What are the goals of next week\\n\\n-   Tackle reported bugs\\n-   Shepherd contributed off-line mode PR to the main codeline\\n-   Improve chain observation tool to include more data and refactor\\n    existing code towards more stateless observation\\n-   Start work on incremental decommits"},{"id":"2023-11-10-sre","metadata":{"permalink":"/cardano-updates/2023-11-10-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-10-sre.md","source":"@site/blog/2023-11-10-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-11-10T00:00:00.000Z","formattedDate":"November 10, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":2.225,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-11-10-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-11-10-hydra"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-11-09-db-sync"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent changes, updates or improvements include:\\n* Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the [cardano-playground](https://github.com/input-output-hk/cardano-playground) stack\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Minor bug fix and db-sync sanchonet package update: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f)\\n\\n### Cardano-parts\\n* General migration support PR for cardano-world to cardano-playground [cardano-parts-pull-18](https://github.com/input-output-hk/cardano-parts/pull/18)\\n  * Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground\\n  * Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes\\n  * Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains\\n  * The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state\\n  * The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable\\n  * Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0\\n  * For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true\\n  * Template updates include:\\n    * Adds optional TF AZ declaration on ec2 resources\\n    * Adds a cardano node p2p dashboard to the grafana cloud stack\\n    * Adds a dbsync pool performance analysis query\\n    * Updates python distribute and delegation scripts from world for playground compatibility\\n    * Starts a python script lib to reduce shared code among the python scripts\\n    * Several justfile improvements and new recipes\\n  * More detail is available in the PR description\\n* Update submit action script for 8.6 [cardano-parts-pull-19](https://github.com/input-output-hk/cardano-parts/pull/19)\\n* Update scripts for 8.6.0-pre [cardano-parts-pull-21](https://github.com/input-output-hk/cardano-parts/pull/21)\\n  * Fixes subcommand names based on ERA_CMD\\n  * Adds deposits to some commands\\n  * Separates CC cold/hot key generation as host authorization has to occur after action is approved\\n  * CC voting enabled in vote job\\n\\n### Cardano-playground\\n* Migration PR to largely complete the network migration from cardano-world to cardano-playground: [cardano-playground-pull-5](https://github.com/input-output-hk/cardano-playground/pull/5)\\n  * Adds re-spun private chain network\\n  * Migrates shelley-qa chain network from world\\n  * Justfile improvements and new recipes\\n  * Improve concurrent environment chain support\\n  * More detail is available in the PR description\\n\\n### Iohk-nix\\n* Migration to play: [iohk-nix-pull-561](https://github.com/input-output-hk/iohk-nix/pull/561)\\n  * Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org\\n  * Remove deprecated cardano-lib p2p network environment\\n  * Update sanchonet chain with respin changes\\n  * Update private chain with respin changes\\n  * Bump private and shelley-qa chains to sanchonet equivalent conway genesis\\n  * Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing\\n\\n### Sanchonet-demo\\n* Update for cardano-node 8.6.0-pre demo: [sanchonet-demo-commit](https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d)"},{"id":"2023-11-09-db-sync","metadata":{"permalink":"/cardano-updates/2023-11-09-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-09-db-sync.md","source":"@site/blog/2023-11-09-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-11-09T00:00:00.000Z","formattedDate":"November 9, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.485,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-11-09-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-11-10-sre"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-11-08-ledger"}},"content":"## High level summary\\nWe have created new tag `sancho-2-2-0`, which integrates missing Conway feautures and some minor fix\\ntags `sancho-2-1-0`, `sancho-2-0-1`.\\nWe have completed the initial implementation for the bootstrap instance objective.\\n\\n## Lower level summary\\n- Add a new `--disable-gov` flag which disabled Conway ferautures\\n[#1558](https://github.com/input-output-hk/cardano-db-sync/pull/1558)\\n- Fix of the committee key size\\n[#1544](https://github.com/input-output-hk/cardano-db-sync/pull/1544)\\n- Workaround a ledger issue with unregistered pools\\n[#1542](https://github.com/input-output-hk/cardano-db-sync/pull/1542)\\n- Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs\\n[#1539](https://github.com/input-output-hk/cardano-db-sync/pull/1539)\\n- Rename offline to offchain\\n[#1533](https://github.com/input-output-hk/cardano-db-sync/pull/1533)\\n- Transfer existing tests to Conway era\\n[#1529](https://github.com/input-output-hk/cardano-db-sync/pull/1529)\\n[#1547](https://github.com/input-output-hk/cardano-db-sync/pull/1547)"},{"id":"2023-11-08-ledger","metadata":{"permalink":"/cardano-updates/2023-11-08-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-08-ledger.md","source":"@site/blog/2023-11-08-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-11-08T00:00:00.000Z","formattedDate":"November 8, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.685,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-11-08-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-11-09-db-sync"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-08-mithril"}},"content":"## High level summary\\n\\nThis update contains mostly improvements to quality of Conway era implementation and\\ntooling that we use for testing Ledger. Major Conway bugs that were discovered and\\nsquashed are:\\n\\n* PParamsUpdate proposals will now correctly use DRep thresholds for ratification\\n* Treasury withdrawals are now properly enacted.\\n* Corrected snapshotting and DRep Stake Distribution Pulser initialization\\n* Delegation to non-existent Stake pool is no longer possible\\n\\nOther important quality of life improvements are addition of reusable interfaces for an\\nordered set `OSet` and ordered map `OMap`. Which allowed us to disable duplicate\\ncertificates and proposals in a transaction. As a precursor to `PlutusV3` integration, a\\nserious reorganization of Plutus related functionality was performed.\\n\\nConway related additions that are noteworthy: Conway Ledger events, disallowing voting on\\nexpired proposals, addition of Anchor to Constitutional Committee resignation proposals.\\n\\nSignificant improvements have been made to a specialized \\"Imp\\" test library that allows us\\nwriting concise stateful unit tests for verifying the Ledger logic. Serious progress has\\nbeen made on the conformance testing, where we can now interface with Haskell generated\\ncode from the Agda specification. Serialization testing has been extended to increase\\nbinary conformance coverage.\\n\\n\\n## Low level summary\\n\\n### Conway\\n\\n* [pull-3808] - Enhance `CommitteeMembersState` query to return quorum and NoConfidence\\n* [pull-3801] - Fix epoch rule and tests\\n* [pull-3803] - Fix delegation validation\\n* [pull-3759] - Reshuffle things to the DRepPulser incorporates some snap shot things\\n* [pull-3779] - Prevent duplicate certs and proposals\\n* [pull-3794] - Added anchor to resign certs\\n* [pull-3797] - Cleanup JSON instances for Conway governance\\n* [pull-3848] - Plutus modules restructure\\n* [pull-3840] - Fix anomalies in Deposits in the Conway Era\\n* [pull-3856] - Add governance related ledger events\\n* [pull-3825] - Prevent voting on expired GovActions\\n* [pull-3831] - Treasury withdrawal fix\\n* [pull-3791] - Use a Data.OMap.Strict to replace ProposalsSnapshot\\n* [pull-3836] - PParamsUpdate enactment fix\\n* [pull-3846] - Revert argument order swap.\\n\\n### Testing\\n\\n* [pull-3782] - Move `ImpTest` to Shelley testlib\\n* [pull-3842] - Imp improvements\\n* [pull-3844] - Add mappings to Agda types\\n* [pull-3853] - Fix strange assertion failure, which hides real Block too big problem.\\n* [pull-3809] - CDDL roundtrip testing\\n* [pull-3832] - Treasury withdrawals tests\\n* [pull-3839] - Added `cardano-ledger-conformance`\\n* [pull-3841] - Add `sha256` to `cardano-ledger-executable-spec`\\n\\n### Improvements and releasing\\n\\n* [pull-3843] - Add ...WithLogs versions of evalScripts and friends\\n* [pull-3795] - Bump plutus to 1.15\\n* [pull-3798] - Bump urllib3 from 1.26.17 to 1.26.18 in /doc\\n* [pull-3799] - Changes needed for 8.6 release\\n* [pull-3807] - Add invalidBeforeL and invalidHereAfterL functions\\n* [pull-3819] - Fixups needed for a release\\n* [pull-3829] - Post release CHANGELOG version bumps\\n* [pull-3830] - Bump aeson to 2.2\\n* [pull-3833] - Backport release cardano-ledger-conway-1.10.1.0\\n* [pull-3828] - Add changelog for node release 8.6\\n\\n[pull-3759]: https://github.com/input-output-hk/cardano-ledger/pull/3759\\n[pull-3795]: https://github.com/input-output-hk/cardano-ledger/pull/3795\\n[pull-3794]: https://github.com/input-output-hk/cardano-ledger/pull/3794\\n[pull-3798]: https://github.com/input-output-hk/cardano-ledger/pull/3798\\n[pull-3797]: https://github.com/input-output-hk/cardano-ledger/pull/3797\\n[pull-3782]: https://github.com/input-output-hk/cardano-ledger/pull/3782\\n[pull-3779]: https://github.com/input-output-hk/cardano-ledger/pull/3779\\n[pull-3801]: https://github.com/input-output-hk/cardano-ledger/pull/3801\\n[pull-3803]: https://github.com/input-output-hk/cardano-ledger/pull/3803\\n[pull-3799]: https://github.com/input-output-hk/cardano-ledger/pull/3799\\n[pull-3808]: https://github.com/input-output-hk/cardano-ledger/pull/3808\\n[pull-3807]: https://github.com/input-output-hk/cardano-ledger/pull/3807\\n[pull-3819]: https://github.com/input-output-hk/cardano-ledger/pull/3819\\n[pull-3809]: https://github.com/input-output-hk/cardano-ledger/pull/3809\\n[pull-3825]: https://github.com/input-output-hk/cardano-ledger/pull/3825\\n[pull-3829]: https://github.com/input-output-hk/cardano-ledger/pull/3829\\n[pull-3830]: https://github.com/input-output-hk/cardano-ledger/pull/3830\\n[pull-3833]: https://github.com/input-output-hk/cardano-ledger/pull/3833\\n[pull-3831]: https://github.com/input-output-hk/cardano-ledger/pull/3831\\n[pull-3832]: https://github.com/input-output-hk/cardano-ledger/pull/3832\\n[pull-3839]: https://github.com/input-output-hk/cardano-ledger/pull/3839\\n[pull-3791]: https://github.com/input-output-hk/cardano-ledger/pull/3791\\n[pull-3841]: https://github.com/input-output-hk/cardano-ledger/pull/3841\\n[pull-3828]: https://github.com/input-output-hk/cardano-ledger/pull/3828\\n[pull-3836]: https://github.com/input-output-hk/cardano-ledger/pull/3836\\n[pull-3846]: https://github.com/input-output-hk/cardano-ledger/pull/3846\\n[pull-3842]: https://github.com/input-output-hk/cardano-ledger/pull/3842\\n[pull-3843]: https://github.com/input-output-hk/cardano-ledger/pull/3843\\n[pull-3844]: https://github.com/input-output-hk/cardano-ledger/pull/3844\\n[pull-3853]: https://github.com/input-output-hk/cardano-ledger/pull/3853\\n[pull-3848]: https://github.com/input-output-hk/cardano-ledger/pull/3848\\n[pull-3840]: https://github.com/input-output-hk/cardano-ledger/pull/3840\\n[pull-3856]: https://github.com/input-output-hk/cardano-ledger/pull/3856"},{"id":"2023-11-08-mithril","metadata":{"permalink":"/cardano-updates/2023-11-08-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-08-mithril.md","source":"@site/blog/2023-11-08-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-11-08T00:00:00.000Z","formattedDate":"November 8, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.805,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-11-08-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-11-08-ledger"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-01-consensus"}},"content":"## High level overview\\n\\nThis week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.\\n\\nFinally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the \'release-mainnet\' aggregator.\\n\\n## Low level overview\\n- Worked on the issue **Prototype a P2P relay with `libp2p`** [#1300](https://github.com/input-output-hk/mithril/issues/1300)\\n- Worked on the issue **Light Wallet: Release `mithril-client` library** [#1311](https://github.com/input-output-hk/mithril/issues/1311)\\n- Worked on the issue **Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Worked on the issue **`release-mainnet` aggregator is unreachable** [#1310](https://github.com/input-output-hk/mithril/issues/1310)\\n- Completed the issue **Client Docker package is incorrect** [#1322](https://github.com/input-output-hk/mithril/issues/1322)"},{"id":"2023-11-01-consensus","metadata":{"permalink":"/cardano-updates/2023-11-01-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-01-consensus.md","source":"@site/blog/2023-11-01-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-11-01T00:00:00.000Z","formattedDate":"November 1, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.44,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-11-01-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-08-mithril"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-01-mithril"}},"content":"## High level summary\\n\\n\\nThis week the Consensus team made progress on two fronts: the question of [survivable eclipse duration](https://github.com/input-output-hk/ouroboros-consensus/pull/422), which is part of our work [supporting Genesis delivery](https://github.com/input-output-hk/ouroboros-consensus/issues/427), and how to [improve the handling of blocks from the future](https://github.com/input-output-hk/ouroboros-network/issues/4251).\\nRegarding the UTxO-HD branch, we managed to run a node with [legacy blocks](https://github.com/input-output-hk/ouroboros-consensus/issues/344), which is syncing with mainnet, up to including Alonzo.\\nWe also [investigated](https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122) a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release."},{"id":"2023-11-01-mithril","metadata":{"permalink":"/cardano-updates/2023-11-01-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-01-mithril.md","source":"@site/blog/2023-11-01-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-11-01T00:00:00.000Z","formattedDate":"November 1, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.895,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-11-01-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-11-01-consensus"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-27-hydra"}},"content":"## High level overview\\n\\nThis week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the `release-mainnet` aggregator.\\n\\nFinally, they implemented new Docker images that build the Mithril nodes on the \'devnet\' faster and fixed some regressions in the Mithril client CLI.\\n\\n## Low level overview\\n- Worked on the issue **P2P Networking - Proof of Concept** [#1300](https://github.com/input-output-hk/mithril/issues/1300)\\n- Completed the issue **Build `mithril-common` and `mithril-client` in WASM PoC** [#1284](https://github.com/input-output-hk/mithril/issues/1284)\\n- Completed the issue **Fix `devnet` Mithril Docker images** [#1272](https://github.com/input-output-hk/mithril/issues/1272\\n- Worked on the issue **Light Wallet: Release `mithril-client` library** [#1311](https://github.com/input-output-hk/mithril/issues/1311)\\n- Worked on the issue **Compute deterministic Cardano UTxO set PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Worked on the issue **`release-mainnet` aggregator is unreachable** [#1310](https://github.com/input-output-hk/mithril/issues/1310)\\n- Completed the issue **Client regressions in snapshot list and download** [#1321](https://github.com/input-output-hk/mithril/issues/1321)"},{"id":"2023-10-27-hydra","metadata":{"permalink":"/cardano-updates/2023-10-27-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-hydra.md","source":"@site/blog/2023-10-27-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-10-27T00:00:00.000Z","formattedDate":"October 27, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.895,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-10-27-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-11-01-mithril"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-27-network"}},"content":"### High-level summary\\n\\nThis week, the Hydra team fixed the `gen-hydra-keys` command to avoid\\noverwriting existing keys, and resolved issues related to the rewritten\\n`hydra-tui`. They also worked on a \\\\\\"dirt road\\\\\\" implementation for the\\n\\\\\\"Ignored init tx\\\\\\" notification, improving the robustness of the system.\\n\\nThe team finalized preparations for the Cardano Summit presentation, including\\nimplementation of the `hydra-poll` example DApp.\\n\\nIf you happen to read this and attend the Summit in Dubai, make sure to check\\nout our Masterclass about \\\\\\"Developing Hydra + Mithril for Scaling Cardano\\\\\\" on\\nFriday, November 3 at 14:00-15:30 local time in the \\\\\\"Al Dar\\\\\\" room!\\n\\n### What did the team achieve this week\\n\\n-   Fix `gen-hydra-keys` command to not overwrite existing keys\\n    [#1136](https://github.com/input-output-hk/hydra/issues/1136)\\n-   Fixed the rewritten `hydra-tui`\\n    [#1113](https://github.com/input-output-hk/hydra/issues/1113)\\n    [#1137](https://github.com/input-output-hk/hydra/issues/1137)\\n-   Finalized cardano summit preparation\\n    [#1109](https://github.com/input-output-hk/hydra/issues/1109)\\n-   Implemented the `hydra-poll` example DApp [link to\\n    repository](https://github.com/cardano-scaling/hydra-poll)\\n-   Dirt road implementation for \\\\\\"Ignored init tx\\\\\\" notification\\n    [#529](https://github.com/input-output-hk/hydra/issues/529)\\n\\n### What are the goals of next week\\n\\n-   Attend cardano summit and deliver presentation\\n-   Clarify / close user created issues\\n-   Build `aarch64-darwin` binaries in CI"},{"id":"2023-10-27-network","metadata":{"permalink":"/cardano-updates/2023-10-27-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-network.md","source":"@site/blog/2023-10-27-network.md","title":"Network Team Update","description":"High-level overview of sprint 47","date":"2023-10-27T00:00:00.000Z","formattedDate":"October 27, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.765,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-10-27-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-27-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-10-27-sre"}},"content":"## High-level overview of [sprint 47][sprint-47]\\n\\n### Bootstrap Peers\\n\\nWe continued to review the process of bootstrap peers, see [ouroboros-network#4555]\\n\\n### CI / Tests\\n\\nWe investigated our CI issues. We found a memory leak in `typed-protocols`\\nfunction used for testing codecs which triggered out of memory manager (OOM) on\\nsome platforms ([typed-protocols#43]); we also found a bug in the connection manager which resulted in CI\\n`timeouts` (see [connection-manager-fix]).  \\n\\n### KeepAlive client\\n\\nWe found two small issues with the keep-alive client, which were addressed\\nby Karl Knutsson ([Cardano Foundation][CF]), [ouroboros-network#4689].\\n\\n### Galois\\n\\nWe merged two large PRs prepared by [Galois]:\\n* [inspect `error` call sites][ouroboros-network#4660]\\n* [implement micro benchmarks for `PeerMetrics`][ouroboros-network#4663]\\n\\n### Cardano Network Service Assurance (CNSA)\\n\\nGalois made the following progress on CNSA:\\n* a simple [InfuxDB] database backend has been added;\\n* the documentation has been updated;\\n* internal improvements to the code;\\n* progress on a new \\"CSNA analysis\\" that provides, for each sampler node, the\\n  block download throughput in bytes over time.\\n\\n### New CHaP Release\\n\\nWe cut a new release of `ouroboros-netowrk` packages to `CHaP`: [chap#547]\\n\\n## More details\\n\\n### CI / Tests\\n\\nWe improved the memory footprint of some of our tests by analysing a stream of\\n`IOSim` traces without retaining them, see [ouroboros-network#4696]\\n\\nAs a safety measure, we introduced an upper bound for heap memory used by test\\nartefacts in our `nix` tests.  We use `200MB` limit for all tests except for\\n`network-mux` tests which use `350MB` limit, see [ouroboros-network#4702].\\n\\nWe refactored one of our tests to use ephemeral ports thus allowing it to\\nrun concurrently, see [ouroboros-network#4702].\\n\\nWe merged [ouroboros-network#4623] which fixes a bunch of test failures.\\n* [inbound-governor: connection leak][ouroboros-network#4694]\\n* [connection-manager: assertion failure][ouroboros-network#4607]\\n* [not released connection][ouroboros-network#4605]\\n\\nAll of them were due to a bug in test logic rather than a bug in production\\ncode.\\n\\n### Release Process\\n\\nWe updated our release process & associated scripts, see\\n[ouroboros-network#4705].\\n\\n[CF]: https://cardanofoundation.org/\\n[Galois]: https://galois.com/\\n[chap#547]: https://github.com/input-output-hk/cardano-haskell-packages/pull/547\\n[connection-manager-fix]: https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680\\n[ouroboros-network#4555]: https://github.com/input-output-hk/ouroboros-network/pull/4555\\n[ouroboros-network#4605]: https://github.com/input-output-hk/ouroboros-network/issues/4605\\n[ouroboros-network#4607]: https://github.com/input-output-hk/ouroboros-network/issues/4607\\n[ouroboros-network#4623]: https://github.com/input-output-hk/ouroboros-network/pull/4623\\n[ouroboros-network#4660]: https://github.com/input-output-hk/ouroboros-network/issues/4660\\n[ouroboros-network#4663]: https://github.com/input-output-hk/ouroboros-network/issues/4663\\n[ouroboros-network#4689]: https://github.com/input-output-hk/ouroboros-network/issues/4689\\n[ouroboros-network#4694]: https://github.com/input-output-hk/ouroboros-network/issues/4694\\n[ouroboros-network#4696]: https://github.com/input-output-hk/ouroboros-network/pull/4696\\n[ouroboros-network#4702]: https://github.com/input-output-hk/ouroboros-network/pull/4702\\n[ouroboros-network#4705]: https://github.com/input-output-hk/ouroboros-network/pull/4705\\n[sprint-47]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22\\n[typed-protocols#43]: https://github.com/input-output-hk/typed-protocols/pull/43\\n[InfluxDB]: https://www.influxdata.com/"},{"id":"2023-10-27-sre","metadata":{"permalink":"/cardano-updates/2023-10-27-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-27-sre.md","source":"@site/blog/2023-10-27-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-10-27T00:00:00.000Z","formattedDate":"October 27, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":1.405,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-10-27-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-27-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-25-mithril"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent changes, updates or improvements include:\\n* Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the [cardano-playground](https://github.com/input-output-hk/cardano-playground) stack\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Adds offchain-metadata-tools, dbsync sanchonet updates: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd)\\n\\n### Cardano-parts\\n* General package updates, modules improvements and template recipes to support network migration from world to playground [cardano-parts-pull-17](https://github.com/input-output-hk/cardano-parts/pull/17)\\n  * Bumps cardano-db-sync-ng to sancho-2-0-0 tag\\n  * Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play\\n  * Adds more machine system bins and devShell bins for scripting and debug purposes\\n  * Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module\\n  * Adds profile-cardano-node-topology module for a simplified interface to most common topology needs\\n  * Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs\\n  * Adds a topology function to filter self from group machines with an allowList for matching infixes\\n  * Adds metadata-server and related offchain-metadata-tools bins from capkgs\\n  * Updates justfile template with:\\n    * a new query-all recipe for getting status of multiple concurrent running environments\\n    * a new set-default-cardano-env recipe for fast switching between environments\\n    * a new start-demo recipe for forking a custom env into conway\\n    * a new start-node recipe for generic environment start\\n    * a new stop-node recipe for generic environment stop\\n    * updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions\\n    * updated query-tip recipe to a generic query tip compatible with each environment\\n\\n### Cardano-playground\\n* Migrates sanchonet from world, prepares further migration and support automation: [cardano-playground-pull-4](https://github.com/input-output-hk/cardano-playground/pull/4)"},{"id":"2023-10-25-mithril","metadata":{"permalink":"/cardano-updates/2023-10-25-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-25-mithril.md","source":"@site/blog/2023-10-25-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-10-25T00:00:00.000Z","formattedDate":"October 25, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.125,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-10-25-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-10-27-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-10-24-node-cli-api"}},"content":"## High level overview\\n\\nThis week, the Mithril team released a new distribution [`2342.0`](https://github.com/input-output-hk/mithril/releases/tag/2342.0). This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.\\n\\nThey also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. \\n\\nFinally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the `release-mainnet` aggregator, and enhanced the Mithril explorer UI.\\n\\n## Low level overview\\n- Worked on the issue **P2P Networking - Proof of Concept** [#1300](https://github.com/input-output-hk/mithril/issues/1300)\\n- Completed the issue **Make `mithril-client` crate a library** [#1141](https://github.com/input-output-hk/mithril/issues/1141)\\n- Worked on the issue **Compute deterministic Cardano UTxO set PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Completed the issue **`ProtocolKeyRegistration` creates performance bottleneck in aggregator** [#1187](https://github.com/input-output-hk/mithril/issues/1187)\\n- Worked on the issue **Fix `devnet` Mithril Docker images** [#1272](https://github.com/input-output-hk/mithril/issues/1272)\\n- Worked on the issue **`release-mainnet` aggregator is unreachable** [#1310](https://github.com/input-output-hk/mithril/issues/1310)\\n- Worked on the issue **Build `mithril-common` and `mithril-client` in WASM PoC** [#1284](https://github.com/input-output-hk/mithril/issues/1284)\\n- Completed the issue **Display a summary of signers before the full list in explorer** [#1133](https://github.com/input-output-hk/mithril/issues/1133)\\n- Completed the issue **Add certificates list in explorer** [#1184](https://github.com/input-output-hk/mithril/issues/1184)\\n- Completed the issue **`CoreVerifier` setup does not compute `total_stake` correctly** [#1306](https://github.com/input-output-hk/mithril/issues/1306)"},{"id":"2023-10-24-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-10-24-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-24-node-cli-api.md","source":"@site/blog/2023-10-24-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-10-24T00:00:00.000Z","formattedDate":"October 24, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.68,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-10-24-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-25-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-20-hydra"}},"content":"# 2023-10-11 - 2023-10-24\\n\\n## High level summary\\n\\nCARDANO-CLI\\n- Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.\\n- `stake-address-info` now shows deposits balance.\\n- Added `conway governance action view` to allow to inspect governance action files before submitting them on a transaction.\\n- `build-raw` support for `--vote-file` and `--proposal-file`\\n\\n\\nCARDANO-API\\n- Support DRep extended keys\\n- Support Plutus V1 in Conway\\n\\n### cardano-cli\\n- [Upgrade to `cardano-api-8.28.0.0`](https://github.com/input-output-hk/cardano-cli/pull/394)\\n- [Simplify `toTxOutInAnyEra`](https://github.com/input-output-hk/cardano-cli/pull/393)\\n- [Upgrade to `cardano-api-8.27.0.0`](https://github.com/input-output-hk/cardano-cli/pull/390)\\n- [Upgrade to `cardano-api-8.26.0.0`](https://github.com/input-output-hk/cardano-cli/pull/389)\\n- [Check that poll answer index is not negative, to avoid a Prelude.!! error](https://github.com/input-output-hk/cardano-cli/pull/380)\\n- [drep registration-certificate: add a golden test](https://github.com/input-output-hk/cardano-cli/pull/379)\\n- [Disambiguate treasury withdrawal flags](https://github.com/input-output-hk/cardano-cli/pull/378)\\n- [Make `stake-address-info` query also return deposit](https://github.com/input-output-hk/cardano-cli/pull/375)\\n- [Add `conway governance action view`](https://github.com/input-output-hk/cardano-cli/pull/374)\\n- [Ch/clearer anchor flags](https://github.com/input-output-hk/cardano-cli/pull/372)\\n- [Command argument types for `transaction` commands](https://github.com/input-output-hk/cardano-cli/pull/371)\\n- [Remove eras\' constitution-hash](https://github.com/input-output-hk/cardano-cli/pull/370)\\n- [Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance](https://github.com/input-output-hk/cardano-cli/pull/368)\\n- [Enable reading of Conway `TxWitness`es](https://github.com/input-output-hk/cardano-cli/pull/367)\\n- [Make `governance action create-protocol-parameters-update` Conway onwards only](https://github.com/input-output-hk/cardano-cli/pull/366)\\n- [`transaction build-raw` support for `--vote-file` and `--proposal-file`](https://github.com/input-output-hk/cardano-cli/pull/365)\\n- [Command argument types for governance key commands](https://github.com/input-output-hk/cardano-cli/pull/364)\\n- [Add test of voting using a cc hot key](https://github.com/input-output-hk/cardano-cli/pull/363)\\n\\n### cardano-api\\n- [Add Show instance for FoldBlocksError](https://github.com/input-output-hk/cardano-api/pull/338)\\n- [Upgrade typed-protocols to 1.1.1](https://github.com/input-output-hk/cardano-api/pull/336)\\n- [Improved validity range handling](https://github.com/input-output-hk/cardano-api/pull/332)\\n- [New version `cardano-api-8.28.0.0`](https://github.com/input-output-hk/cardano-api/pull/331)\\n- [Delete `AlonzoEraOnly`](https://github.com/input-output-hk/cardano-api/pull/330)\\n- [New `shelleyToAlonzoEraToShelleyToBabbageEra` function](https://github.com/input-output-hk/cardano-api/pull/329)\\n- [DRep extended key: add CastVerificationKeyRole](https://github.com/input-output-hk/cardano-api/pull/327)\\n- [New version `cardadno-api-8.27.0.0`](https://github.com/input-output-hk/cardano-api/pull/326)\\n- [Delete unnecessary calls to `shelleyBasedEraConstraints`](https://github.com/input-output-hk/cardano-api/pull/325)\\n- [New version `cardadno-api-8.27.0.0`](https://github.com/input-output-hk/cardano-api/pull/324)\\n- [Support Plutus V1 in Conway](https://github.com/input-output-hk/cardano-api/pull/323)\\n- [Parameterize GovernanceAction on era ](https://github.com/input-output-hk/cardano-api/pull/322)\\n- [Support DRep extended keys](https://github.com/input-output-hk/cardano-api/pull/320)\\n- [New version `cardano-api-8.26.0.0`](https://github.com/input-output-hk/cardano-api/pull/317)\\n- [Haddock document the case functions, so that their behavior is easier to understand when calling them](https://github.com/input-output-hk/cardano-api/pull/314)\\n- [Avoid `IsShelleyBasedEra` and `IsCardanoEra` where possible](https://github.com/input-output-hk/cardano-api/pull/313)\\n- [New `MaryEraOnly` eon. Disjoint functions](https://github.com/input-output-hk/cardano-api/pull/312)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n- [Factor out file creation for SPO](https://github.com/input-output-hk/cardano-node/pull/5515)\\n\\n### docs\\n- [Tracer documentation generation enhacements ](https://github.com/input-output-hk/cardano-node/pull/5504)\\n\\n### CI & project maintenance"},{"id":"2023-10-20-hydra","metadata":{"permalink":"/cardano-updates/2023-10-20-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-20-hydra.md","source":"@site/blog/2023-10-20-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-10-20T00:00:00.000Z","formattedDate":"October 20, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.84,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-10-20-hydra","authors":["ffakenz"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-10-24-node-cli-api"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-10-18-consensus"}},"content":"## High-level summary\\n\\nThis week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.\\n\\nIn addition, they improved the Hydra node API\'s submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.\\nThis improvement offers users greater flexibility and ease of interaction with the API.\\n\\nFinally, the team has followed up on the TUI brick upgrade to version 1.10.\\nThis effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.\\n\\n\\n## What did the team achieve this week\\n\\n-   Prepare presentation and workshop for Cardano Summit.\\n-   More TUI fixes and improvements.\\n    +   [#1127](https://github.com/input-output-hk/hydra/pull/1127)\\n    +   [#1120](https://github.com/input-output-hk/hydra/issues/1120)\\n-   Upgrade GHC from 9.2.8 -> 9.6.2 [#1105](https://github.com/input-output-hk/hydra/pull/1105)\\n-   Solved user issue related to submitting transactions in cbor format [#1111](https://github.com/input-output-hk/hydra/issues/1111).\\n-   Fix hydraw connection issue making it more stable [#1121](https://github.com/input-output-hk/hydra/pull/1121).\\n\\n\\n## What are the goals of next week\\n\\n-   Work on hydra-poll dApp for Cardano summit.\\n-   Start the work on packaging hydra-node and related services."},{"id":"2023-10-18-consensus","metadata":{"permalink":"/cardano-updates/2023-10-18-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-18-consensus.md","source":"@site/blog/2023-10-18-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-10-18T00:00:00.000Z","formattedDate":"October 18, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.65,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-10-18-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-20-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-18-mithril"}},"content":"## High level summary\\n\\nDuring the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.\\n\\n### UTxO-HD\\n\\n- The Plutus workload benchmark for the in-memory backend [showed no regressions](https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330) for the metrics of interest, but it does show an increase in resource usage.\\n- We got additional ad-hoc [measurements](https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069) on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.\\n- We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.\\n\\n### Genesis\\n\\n- We produced the first draft for a Survivable Eclipse Duration Model ([422](https://github.com/input-output-hk/ouroboros-consensus/pull/422)).\\n\\n### Support\\n\\n- [Esgen](https://github.com/amesgen) finished his cycle as release engineer. Node [8.5.0](https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre) has been released.\\n- We resumed work on the subpar handling of block from the future ([4251](https://github.com/input-output-hk/ouroboros-network/issues/4251)).\\n- We prepared the integration of [new tracing events](https://github.com/input-output-hk/cardano-node/pull/5502) for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned [issue](https://github.com/input-output-hk/ouroboros-network/issues/4251))."},{"id":"2023-10-18-mithril","metadata":{"permalink":"/cardano-updates/2023-10-18-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-18-mithril.md","source":"@site/blog/2023-10-18-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-10-18T00:00:00.000Z","formattedDate":"October 18, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.07,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-10-18-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-10-18-consensus"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-15-network"}},"content":"## High level overview\\n\\nThis week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.\\n\\nFinally, they enhanced the CI/CD to publish multiple packages to [crates.io](https://crates.io/) and started improving the developer experience with the Mithril devnet.\\n\\n## Low level overview\\n\\n- Published the security advisory **Mithril relay could expose Cardano block producer internal IP when updated** [#GHSA-9m3h-72xj-x2gq](https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq)\\n- Worked on the issue **P2P Networking - Proof of Concept** [#1300](https://github.com/input-output-hk/mithril/issues/1300)\\n- Worked on the issue **Make `mithril-client` crate a library** [#1141](https://github.com/input-output-hk/mithril/issues/1141)\\n- Worked on the issue **Compute deterministic Cardano transactions history PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Worked on the issue **`ProtocolKeyRegistration` creates performance bottleneck in aggregator** [#1187](https://github.com/input-output-hk/mithril/issues/1187)\\n- Completed the issue **Publish multiple packages to `crates.io`** [#1298](https://github.com/input-output-hk/mithril/issues/1298)\\n- Completed the issue **Rename public key published in releases** [#1292](https://github.com/input-output-hk/mithril/issues/1292)\\n- Completed the issue **Mithril networks infrastructure maintenance** [#1218](https://github.com/input-output-hk/mithril/issues/1218)\\n- Worked on the issue **Fix `devnet` Mithril Docker images** [#1272](https://github.com/input-output-hk/mithril/issues/1272)"},{"id":"2023-10-15-network","metadata":{"permalink":"/cardano-updates/2023-10-15-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-15-network.md","source":"@site/blog/2023-10-15-network.md","title":"Network Team Update","description":"High-level overview of sprint 46","date":"2023-10-15T00:00:00.000Z","formattedDate":"October 15, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":0.59,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-10-15-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-18-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-13-hydra"}},"content":"## High-level overview of [sprint 46][sprint-46]\\n\\n### Bootstrap Peers\\n\\nWe continued reviewing of bootstrap peers, see [ouroboros-network#4555].\\n\\n### Towards Typed Protocols 0.2.0.0\\n\\nWe diagnosed the performance regression of the new design. The work on\\n`typed-protocols` will be postponed.  For more details see the\\n[typed-protocols#3].  As an outcome of the performance debugging we prepared\\n[PR][ouroboros-network#4691] which updates the `demo-ping-pong` and\\n`demo-chain-sync` applications.\\n\\n### Peer Sharing\\n\\nWe made progress in review of [ouroboros-network#4644], which simplifies the\\npeer sharing and fixes the [ouroboros-network#4642] issue.\\n\\n### Tech Debt\\n\\nWe reviewed the [ouroboros-network#3836] PR which inspects all the uses of\\n`error` in `ouroboros-network`.  The PR was prepared by Galois.\\n\\n\\n[sprint-46]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22\\n[typed-protocols#3]: https://github.com/input-output-hk/typed-protocols/pull/3\\n[ouroboros-network#3836]:  https://github.com/input-output-hk/ouroboros-network/pull/3836\\n[ouroboros-network#4555]:  https://github.com/input-output-hk/ouroboros-network/pull/4555\\n[ouroboros-network#4642]:  https://github.com/input-output-hk/ouroboros-network/pull/4642\\n[ouroboros-network#4644]:  https://github.com/input-output-hk/ouroboros-network/pull/4644\\n[ouroboros-network#4691]:  https://github.com/input-output-hk/ouroboros-network/pull/4691"},{"id":"2023-10-13-hydra","metadata":{"permalink":"/cardano-updates/2023-10-13-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-hydra.md","source":"@site/blog/2023-10-13-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-10-13T00:00:00.000Z","formattedDate":"October 13, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.745,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-10-13-hydra","authors":["ffakenz"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-15-network"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-10-13-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team\'s primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.\\n\\nThey also completed the exploration of potentially moving the Plutus validator scripts to Aiken.\\n\\nAdditionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project\'s structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.\\n\\n\\n## What did the team achieve this week\\n\\n-   Network Resilience Persistence (#1101)[https://github.com/input-output-hk/hydra/pull/1101].\\n-   Upgrade brick on TUI (#1103)[https://github.com/input-output-hk/hydra/pull/1103].\\n-   Aiken commit validator translation (#1072)[https://github.com/input-output-hk/hydra/pull/1072].\\n-   Fixed some bugs in our TUI client.\\n\\n\\n## What are the goals of next week\\n\\n-   Prepare presentation and workshop for Cardano Summit.\\n-   Work on hydra-poll dApp for Cardano summit.\\n-   Start the work on packaging hydra-node and related services."},{"id":"2023-10-13-ledger","metadata":{"permalink":"/cardano-updates/2023-10-13-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-ledger.md","source":"@site/blog/2023-10-13-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-10-13T00:00:00.000Z","formattedDate":"October 13, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":0.965,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-10-13-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-13-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-10-13-sre"}},"content":"## High level summary\\n\\nThe Ledger team has been shifting focus from implementing Conway related features to\\ntesting. For this reason there is a very little amount features that are reported this\\ntime aorund. Notable Conway related changes are a specialized ledger query for getting\\nConstitutional Committee state and prevention of submitting proposal procedures that have\\nno valid path to enactment.\\n\\nTesting related work was mainly on a constraint base system as well as on roundtrip\\nserialization. As a result of this extra testing a bug in Conway Genesis serialization\\nwas eliminated.\\n\\n## Low level summary\\n\\n### Conway era\\n\\n* [pull-3768] - Fail proposal on invalid prevGovActionId\\n* [pull-3781] - CommitteeState query\\n\\n### Integration and releasing\\n\\n* [pull-3774] - Bump urllib3 from 1.26.10 to 1.26.17 in /doc\\n* [pull-3770] - cabal.project: Bump index states\\n* [pull-3778] - Bump plutus to 1.14\\n\\n### Testing\\n\\n* [pull-3769] - Add roundtrip testing by validating FlatTerm\\n* [pull-3783] - Update TranslationInstance.hs\\n* [pull-3775] - Refactor and improve constraint based STS tests\\n* [pull-3793] - Fix sums with negative RHS.\\n\\n[pull-3774]: https://github.com/input-output-hk/cardano-ledger/pull/3774\\n[pull-3770]: https://github.com/input-output-hk/cardano-ledger/pull/3770\\n[pull-3778]: https://github.com/input-output-hk/cardano-ledger/pull/3778\\n[pull-3769]: https://github.com/input-output-hk/cardano-ledger/pull/3769\\n[pull-3768]: https://github.com/input-output-hk/cardano-ledger/pull/3768\\n[pull-3781]: https://github.com/input-output-hk/cardano-ledger/pull/3781\\n[pull-3783]: https://github.com/input-output-hk/cardano-ledger/pull/3783\\n[pull-3775]: https://github.com/input-output-hk/cardano-ledger/pull/3775\\n[pull-3793]: https://github.com/input-output-hk/cardano-ledger/pull/3793"},{"id":"2023-10-13-sre","metadata":{"permalink":"/cardano-updates/2023-10-13-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-13-sre.md","source":"@site/blog/2023-10-13-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-10-13T00:00:00.000Z","formattedDate":"October 13, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":2.595,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-10-13-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-10-13-ledger"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-11-mithril"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent changes, updates or improvements include:\\n* Sanchonet environment was updated to 8.5.0-pre.\\n* Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Various improvements and fixes including:\\n  * Add GHA cron schedule\\n  * Add nix auto-gc to avoid running out of storage during large package set builds\\n  * Add new packages to capkgs\\n  * Reduce runner storage requirement leaving more room for builds\\n  * Restructure capkgs attribute names to avoid package name collisions\\n  * Return to non-musl builds for cardano packages to retain journald compatability\\n  * Update cache usage to from file level to folder level to reduce network and latency overhead\\n  * Commit diff: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22)\\n\\n### Cardano-parts\\n* Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: [cardano-parts-pull-16](https://github.com/input-output-hk/cardano-parts/pull/16)\\n* Dbsync, smash, faucet and more: [cardano-parts-pull-15](https://github.com/input-output-hk/cardano-parts/pull/15)\\n  * Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes\\n  * Adds nginx vhost metrics exporter profile\\n  * Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down\\n  * Adds bash *-ng autocompletion compatible wrappers\\n  * Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview\\n  * Adds downstream grafana cloud dashboard as templates\\n  * Adds downstream grafana cloud alerts as templates\\n  * Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish\\n  * Updates the basic profile with IOG cache and commonly used bins\\n  * Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning\\n  * Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks\\n  * Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets\\n  * Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration\\n  * Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion\\n  * Updates the colmena template with dbsync, smash, faucet machines profiles and roles\\n  * Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns\\n  * Bumps capkgs node-ng to 8.5.0-pre\\n\\n### Cardano-playground\\n* Dbsync, smash, faucet and more: [cardano-playground-pull-3](https://github.com/input-output-hk/cardano-playground/pull/3)\\n  * Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview\\n  * Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts\\n  * Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change\\n  * Optimizes machine sizes\\n  * Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets\\n  * Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion\\n  * Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning\\n  * Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration\\n\\n### Cardano-world\\n* Update sanchonet network to cardano-node 8.5.0: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4)\\n\\n### Sanchonet-demo\\n* Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: [sanchonet-demo-commit](https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31)"},{"id":"2023-10-11-mithril","metadata":{"permalink":"/cardano-updates/2023-10-11-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-11-mithril.md","source":"@site/blog/2023-10-11-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-10-11T00:00:00.000Z","formattedDate":"October 11, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.77,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-10-11-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-10-13-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-10-10-node-cli-api"}},"content":"## High level overview\\n\\nThis week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on [crates.io](https://crates.io/), the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.\\n\\nFinally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.\\n\\n## Low level overview\\n\\n- Worked on the issue **Make `mithril-client` crate a library** [#1141](https://github.com/input-output-hk/mithril/issues/1141)\\n- Worked on the issue **Compute deterministic Cardano transactions history PoC** [#1283](https://github.com/input-output-hk/mithril/issues/1283)\\n- Worked on the issue **`ProtocolKeyRegistration` creates performance bottleneck in aggregator** [#1187](https://github.com/input-output-hk/mithril/issues/1187)\\n- Completed the issue **Update `Rust` compiler in `nix` CI** [#1282](https://github.com/input-output-hk/mithril/issues/1282)\\n- Worked on the issue **Mithril networks infrastructure maintenance** [#1218](https://github.com/input-output-hk/mithril/issues/1218)\\n- Worked on the issue **Activate Cloudflare protection of infrastructure** [#1230](https://github.com/input-output-hk/mithril/issues/1230)"},{"id":"2023-10-10-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-10-10-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-10-node-cli-api.md","source":"@site/blog/2023-10-10-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-10-10T00:00:00.000Z","formattedDate":"October 10, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.985,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-10-10-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-11-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-06-hydra"}},"content":"# 2023-09-27 - 2023-10-10\\n\\n## High level summary\\n\\nCARDANO-NODE\\n- [Pre-release of cardano-node 8.5.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre)\\n\\nCARDANO-CLI\\n- Depracated governance query commands and moved all governance related queries to `cardano-cli <era> query`\\n- Drep registration certificates now allow to include an anchor\\n- Integrated Drep retirement ceriticates\\n- clean up of Drep registration certificates.\\n\\nCARDANO-API\\n- Add support for committee hot key witnesses\\n- Require conway onwards for voting\\n- Conway drep registration: expose ledger anchor parameter\\n- Add certs to txbody of Conway transactions\\n\\n### cardano-cli\\n\\n- [Move `governance query` commands to `query` command group](https://github.com/input-output-hk/cardano-cli/pull/347)\\n- [Rename create-new-committee into update-committee](https://github.com/input-output-hk/cardano-cli/pull/344)\\n- [New version cardano-cli-8.12.0.0](https://github.com/input-output-hk/cardano-cli/pull/341)\\n- [Add support for committee hot key witnesses](https://github.com/input-output-hk/cardano-cli/pull/338)\\n- [conway governance vote create: make it possible to use cc hot keys](https://github.com/input-output-hk/cardano-cli/pull/337)\\n- [New version `cardano-cli-8.11.0.0`](https://github.com/input-output-hk/cardano-cli/pull/331)\\n- [Drep certification registration: add parameters for anchor](https://github.com/input-output-hk/cardano-cli/pull/330)\\n- [Upgrade to `cardano-api-8.25.0.1`](https://github.com/input-output-hk/cardano-cli/pull/329)\\n- [Move files that are not golden files into `input` directory](https://github.com/input-output-hk/cardano-cli/pull/327)\\n- [Update to cardano-api-8.24](https://github.com/input-output-hk/cardano-cli/pull/324)\\n- [Fix #311 - Add Cold Committee Key text envelope](https://github.com/input-output-hk/cardano-cli/pull/323)\\n- [create-poll, answer-poll, verify-poll: move to \'babbage governance\' block](https://github.com/input-output-hk/cardano-cli/pull/322)\\n- [Update to `cardano-api-8.23.1.0`](https://github.com/input-output-hk/cardano-cli/pull/320)\\n- [Make `transaction view` emit JSON](https://github.com/input-output-hk/cardano-cli/pull/319)\\n- [Tidy up query command structure](https://github.com/input-output-hk/cardano-cli/pull/318)\\n- [Use `caseShelleyToBabbageOrConwayEraOnwards` from `cardano-api`](https://github.com/input-output-hk/cardano-cli/pull/317)\\n- [Add DRep Retirement Certificate command](https://github.com/input-output-hk/cardano-cli/pull/316)\\n- [Update to cardano api 8.22.0.0](https://github.com/input-output-hk/cardano-cli/pull/310)\\n- [drep registration-certificate: remove mix with SPO registration](https://github.com/input-output-hk/cardano-cli/pull/309)\\n\\n### cardano-api\\n\\n- [Delete `EraCast` instance for `Certificate`](https://github.com/input-output-hk/cardano-api/pull/307)\\n- [Add certs to txbody of Conway transactions](https://github.com/input-output-hk/cardano-api/pull/306)\\n- [Move DRep reg certificate anchor types from cardano-cli to cardano-api](https://github.com/input-output-hk/cardano-api/pull/305)\\n- [Add BabbageEraOnly](https://github.com/input-output-hk/cardano-api/pull/304)\\n- [New version cardano-api-8.25.2.0](https://github.com/input-output-hk/cardano-api/pull/303)\\n- [Add support for committee hot key witnesses](https://github.com/input-output-hk/cardano-api/pull/300)\\n- [Reduce constraint usage with eons](https://github.com/input-output-hk/cardano-api/pull/299)\\n- [Delete `withShelleyBasedEraConstraintsForLedger`](https://github.com/input-output-hk/cardano-api/pull/297)\\n- [Simplify `DebugLedgerState` with eons](https://github.com/input-output-hk/cardano-api/pull/296)\\n- [New version cardano-api-8.25.0.0](https://github.com/input-output-hk/cardano-api/pull/294)\\n- [Require conway onwards for voting](https://github.com/input-output-hk/cardano-api/pull/293)\\n- [Add witness committee cold key](https://github.com/input-output-hk/cardano-api/pull/292)\\n- [Fix CHaP failure due to haddock issue](https://github.com/input-output-hk/cardano-api/pull/291)\\n- [Amend cardano-api/pull/284 to use ReexposeLedger](https://github.com/input-output-hk/cardano-api/pull/290)\\n- [Rename `AnyEraInEon` to `EraInEon`](https://github.com/input-output-hk/cardano-api/pull/289)\\n- [Release 8.24.0.0](https://github.com/input-output-hk/cardano-api/pull/288)\\n- [Parameterize `AnyEraInEon`.  Add `AnyEon`](https://github.com/input-output-hk/cardano-api/pull/287)\\n- [New version `cardano-api-8.23.0.0`](https://github.com/input-output-hk/cardano-api/pull/286)\\n- [conway drep registration: expose ledger anchor parameter](https://github.com/input-output-hk/cardano-api/pull/284)\\n- [New `caseAlonzoOnlyOrBabbageEraOnwards` and `alonzoEraOnlyToAlonzoEraOnwards` functions](https://github.com/input-output-hk/cardano-api/pull/282)\\n- [Rename eon functions](https://github.com/input-output-hk/cardano-api/pull/281)\\n- [New `AnyEraInEon`](https://github.com/input-output-hk/cardano-api/pull/280)\\n- [Replace `ValidityLowerBoundSupportedInEra`](https://github.com/input-output-hk/cardano-api/pull/279)\\n- [Replace `TxExtraKeyWitnessesSupportedInEra`](https://github.com/input-output-hk/cardano-api/pull/278)\\n- [Explicit pattern match on all ledger certificates constructors. Remove redundant module](https://github.com/input-output-hk/cardano-api/pull/277)\\n- [Release 8.22.0.0](https://github.com/input-output-hk/cardano-api/pull/276)\\n- [Replace `TxTotalAndReturnCollateralSupportedInEra`](https://github.com/input-output-hk/cardano-api/pull/275)\\n\\n### cardano-node\\n\\n- [Integrate upstream libraries for 8.5](https://github.com/input-output-hk/cardano-node/pull/5490)\\n\\n### cardano-testnet\\n\\n- [bump cardano-api to 8.25.2](https://github.com/input-output-hk/cardano-node/pull/5497)\\n- [Remove unused code in cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/5491)\\n- [Integrate upstream libraries for 8.5](https://github.com/input-output-hk/cardano-node/pull/5490)\\n\\n### docs\\n\\n### CI & project maintenance"},{"id":"2023-10-06-hydra","metadata":{"permalink":"/cardano-updates/2023-10-06-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-06-hydra.md","source":"@site/blog/2023-10-06-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-10-06T00:00:00.000Z","formattedDate":"October 6, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.88,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-10-06-hydra","authors":["ffakenz"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-10-10-node-cli-api"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-10-06-performance-and-tracing"}},"content":"## High-level summary\\n\\nThis week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.\\n\\nThe team also delivered the first version of the network resilience layer, significantly increasing head availability.\\n\\nAdditionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.\\n\\nLast but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.\\n\\n\\n## What did the team achieve this week\\n-   Release [0.13.0](https://github.com/input-output-hk/hydra/releases/tag/0.13.0)\\n-   Published vulnerability reports [#1088](https://github.com/input-output-hk/hydra/pull/1088)\\n-   Merged network resilience work part I [#1074](https://github.com/input-output-hk/hydra/pull/1074)\\n-   Planning for Cardano Summit participation \\n-   Discussions with funded Catalyst projects wanting to build on Hydra for support\\n-   Merged typos fix PR from @omahs [#1095](https://github.com/input-output-hk/hydra/pull/1095)\\n\\n\\n## What are the goals of next week\\n\\n-   Complete Aiken commit validator script [#1072](https://github.com/input-output-hk/hydra/pull/1072)\\n-   Complete Kupo integration [#1078](https://github.com/input-output-hk/hydra/issues/1078)\\n-   Brick upgrade on TUI [#1103](https://github.com/input-output-hk/hydra/pull/1103)\\n-   Clean backlog\\n-   Prepare and rehearse demo and talk for Cardano Summit"},{"id":"2023-10-06-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-10-06-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-06-performance-and-tracing.md","source":"@site/blog/2023-10-06-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-10-06T00:00:00.000Z","formattedDate":"October 6, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.625,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-10-06-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-10-06-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-10-04-consensus"}},"content":"## High level summary\\n\\n* Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.\\n* Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.\\n* Development: We\'ve developed strategies for future benchmarks of PlutusV3 and UTxO-HD\'s on-disk backing store.\\n* Tracing: The machine-readable tracer configuration has been merged. Optimization of `cardano-tracer` started.\\n* Nomad backend: Ongoing variance analysis and refined cluster topology.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nPerforming and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the\\nperformance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  \\n\\nFurthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results\\nshow all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the `cardano-tracer` service.\\n\\n### Consensus QTAs\\n\\nThe Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The\\nfeedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.\\n\\n### Development\\n\\nBenchmarking UTxO-HD\'s on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  \\n\\nPlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,\\nwe\'d like to validate the many improvements that have gone into the Plutus evaluator.\\n\\n### Tracing\\n\\nThe focus for further optimization of the new tracing system has shifted to `cardano-tracer` - the service\\nreceiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in `cardano-node` is\\nmore performance critical, the receiving service must still minimize its resource footprint. Moreover, it can\\ngenerate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.\\n\\n### Nomad backend\\n\\nVariance analysis of new nomad backend has revealed a necessary adjustment of the cluster\'s topology. We repeated\\nthe same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery."},{"id":"2023-10-04-consensus","metadata":{"permalink":"/cardano-updates/2023-10-04-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-04-consensus.md","source":"@site/blog/2023-10-04-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-10-04T00:00:00.000Z","formattedDate":"October 4, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.135,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-10-04-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-10-06-performance-and-tracing"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-04-mithril"}},"content":"## High level summary\\n\\nThe value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the *in-memory* backend.\\n\\nOn the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.\\nWe also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.\\n\\n\\n### Genesis\\n\\n- We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain ([392](https://github.com/input-output-hk/ouroboros-consensus/issues/392)).\\n\\n\\n### Support\\n\\n- We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition ([366](https://github.com/input-output-hk/ouroboros-consensus/pull/366)).\\n- We enabled richer tracers in `cardano-node` that can be useful in future debugging ([384](https://github.com/input-output-hk/ouroboros-consensus/pull/384)).\\n- [Esgen](https://github.com/amesgen) continues with his release engineer activities, and created a new Consensus release.\\n\\n### Fostering collaboration\\n\\n- We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface ([369](https://github.com/input-output-hk/ouroboros-consensus/pull/369))."},{"id":"2023-10-04-mithril","metadata":{"permalink":"/cardano-updates/2023-10-04-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-04-mithril.md","source":"@site/blog/2023-10-04-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-10-04T00:00:00.000Z","formattedDate":"October 4, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.15,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-10-04-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-10-04-consensus"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-02-network"}},"content":"## High level overview\\nThis week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion [on implementing Mithril in a light wallet](https://github.com/input-output-hk/mithril/discussions/1273) to receive feedback and contributions from the community.\\n\\nThey also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.\\n\\nFinally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.\\n\\n## Low level overview\\n- Created the discussion **Implement Mithril in a light wallet** [#1273](https://github.com/input-output-hk/mithril/discussions/1273)\\n- Completed the issue **Run client in browser WASM PoC** [#1254](https://github.com/input-output-hk/mithril/issues/1254)\\n- Completed the issue **Benchmark aggregator performances** [#1220](https://github.com/input-output-hk/mithril/issues/1220)\\n- Worked on the issue **Add SPO tickers in explorer** [#1185](https://github.com/input-output-hk/mithril/issues/1185)\\n- Completed the issue **Add a non `404` status code on the aggregator endpoint** [#1103](https://github.com/input-output-hk/mithril/issues/1103)\\n- Completed the issue **Use source attribute in errors** [#1265](https://github.com/input-output-hk/mithril/issues/1265)\\n- Completed the issue **Create a SPO checklist for KES keys update** [#1267](https://github.com/input-output-hk/mithril/issues/1267)\\n- Completed the issue **Configure status page and alerting** [#1277](https://github.com/input-output-hk/mithril/issues/1277)\\n- Completed the issue **Upgrade dependencies** [#1274](https://github.com/input-output-hk/mithril/issues/1274)"},{"id":"2023-10-02-network","metadata":{"permalink":"/cardano-updates/2023-10-02-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-10-02-network.md","source":"@site/blog/2023-10-02-network.md","title":"Network Team Update","description":"High-level overview of sprint 45","date":"2023-10-02T00:00:00.000Z","formattedDate":"October 2, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.485,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-10-02-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-10-04-mithril"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-29-goedel"}},"content":"## High-level overview of [sprint 45][sprint-45]\\n\\n[sprint-45]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22\\n\\n### Bootstrap Peers\\n\\nWe started reviewing the bootstrap peers PR, [ouroboros-network#4615].\\n\\n### Towards Typed Protocols 0.2.0.0\\n\\nWe discovered a performance regression when using `typed-protocols-0.2.0.0`, and we\\nstarted investigating where it comes from.  Currently, we see that\\n`typed-protocols-0.2.0.0` can outperform `typed-protocols-0.1.0.0` when running\\nin isolation with a simple `ping-pong` protocol, so the regression might be in\\nthe new block fetch implementation which comes with `typed-protocols-0.2.0.0`\\nSee [typed-protocols#3].\\n\\n### Tech Debt\\n\\nWe merged two PRs written by Galois engineers:\\n\\n* a pull request which refactors the main entry function for P2P, see [ouroboros-network#3834]; \\n* a pull request which reviews usage of `unsafe` function in the network code based.\\n\\nGalois also made progress with the following two issues:\\n * add microbenchmarks to some of our tests: [ouroboros-network#3832]\\n * inspect use of `error` in `ouroboros-network` repository:\\n   [ouroboros-network#3836]\\n\\n### IO-Sim\\n\\n#### IOSimPOR\\nWe found and fixed a bug in `IOSimPOR`.  We\'d like to thank Prof. John Hughes\\n(Quviq AB) for helping us with debugging the issue.\\n\\nWe also provided a more uniform API for `IOSimPOR`, and added ways to make the\\ndebugging similar problems in the future easier.\\n\\n<details>\\n<summary>Technical Details on IOSim refactoring</summary>\\nWe removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means\\nremoving parallel evaluation of discovered races.  We found out that it gives\\nonly 25% better performance.  In the future QuickCheck will offer running\\ndifferent cases in parallel which should provide better performance as there\\nare no dependencies between the evaluation of different test cases, while schedules\\nare discovered while running which limits the possible gains from running them\\nconcurrently.  The performance was not the only factor though.  When using\\nparallelism in the lazy `ST` monad we\'d need to rely on memory guarantees of\\n`STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it\\nmight not be the case in the future.\\n</details>\\n\\n#### IOSim\\n\\nTo prepare for the next release, we consolidate packages taking advantage of\\nthe public sublibraries supported now both by `cabal` and `Hackage`.   This is\\na work in progress, [io-sim#114].\\n\\n### Cardano Newtork Service Assurance\\n\\nGalois made the following progress:\\n\\n* A test run of spinning up a CNSA instance was done, as a result documentation\\n  was updated.\\n* Based on the IOG code review of the CNSA code, updates to the CNSA code were\\n  made.\\n* Galois has started the design for adding a CNSA analysis for \\"fetched bytes\\n  over time while node is syncing\\".\\n\\n### P2P adoption\\n\\nIn the last two weeks, we\'ve seen increase in P2P adoption.\\n![P2P relays](/images/network/2023-10-04-p2p-relays.png)\\n\\n\\nThe following graphs show several different versions of relays running on the mainnet.  The\\ngreen line `NodeToNodeVersionV10.True` denotes P2P relays.\\n![node versions](/images/network/2023-10-04-relay-versions.png)\\n\\n### Open Source\\n\\nWe upstreamed our FFI bindings to Windows named pipes to `Win32` package, the\\nPR was accepted and merged.\\n\\nWe also received an external contribution which enhanced our documentation, see\\n[ouroboros-network#4676].\\n\\n[ouroboros-network#3832]: https://github.com/input-output-hk/ouroboros-network/issues/3832\\n[ouroboros-network#3834]: https://github.com/input-output-hk/ouroboros-network/issues/3834\\n[ouroboros-network#3835]: https://github.com/input-output-hk/ouroboros-network/issues/3835\\n[ouroboros-network#3836]: https://github.com/input-output-hk/ouroboros-network/issues/3836\\n[ouroboros-network#4615]: https://github.com/input-output-hk/ouroboros-network/issues/4615\\n[ouroboros-network#4676]: https://github.com/input-output-hk/ouroboros-network/pull/4676\\n[io-sim#113]: https://github.com/input-output-hk/io-sim/issues/113\\n[io-sim#114]: https://github.com/input-output-hk/io-sim/issues/114\\n[typed-protocols#3]: https://github.com/input-output-hk/typed-protocols/pull/3"},{"id":"2023-09-29-goedel","metadata":{"permalink":"/cardano-updates/2023-09-29-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-goedel.md","source":"@site/blog/2023-09-29-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-09-29T00:00:00.000Z","formattedDate":"September 29, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.42,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-09-29-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-10-02-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-29-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is currently formalising mini protocols and testing the\\nperformance analysis tool\\n\\n## Details\\n\\n* drafting processs calculus semantics of mini protocol programs\\n\\n* testing the new performance modelling tool\\n\\n* further work on specification of mini protocols\\n\\n* extension of mini protocol framework to support communication of\\n  programs with local environments via synchronous channels"},{"id":"2023-09-29-hydra","metadata":{"permalink":"/cardano-updates/2023-09-29-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-hydra.md","source":"@site/blog/2023-09-29-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-09-29T00:00:00.000Z","formattedDate":"September 29, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.49,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-09-29-hydra","authors":["ffakenz"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-29-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-29-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team mainly focused on having a working new reliability\\nnetwork layer; and specified its expected behavior in a new ADR.\\n\\nThey also revisited the security policy and vulnerability disclosure policy on\\nhow to handle security vulnerability within Hydra, and in particular how to\\nhandle so-called \\"Silent fixes\\".\\n\\n\\n## What did the team achieve this week\\n\\n- Updated security policy and vulnerability disclosure policy [#1088](https://github.com/input-output-hk/hydra/pull/1088)\\n- Adr/network reliability [#1082](https://github.com/input-output-hk/hydra/pull/1082)\\n\\n\\n## What are the goals of next week\\n\\n- Introduce reliability network layer [#1074] (https://github.com/input-output-hk/hydra/pull/1074)\\n- Refactor the vCommit validator in Aiken [#1072](https://github.com/input-output-hk/hydra/pull/1072)"},{"id":"2023-09-29-ledger","metadata":{"permalink":"/cardano-updates/2023-09-29-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-ledger.md","source":"@site/blog/2023-09-29-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-09-29T00:00:00.000Z","formattedDate":"September 29, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.465,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-09-29-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-29-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-29-sre"}},"content":"## High level summary\\n\\nFew important Conway related features were completed in this two week period:\\n\\n* Constitutional Committee was the last missing Conway related entity that has now been\\n fully implemented.\\n* Treasury withdrawals governance actions have been fixed and now behave as expected.\\n* Current treasury amount supplied in the transaction is now enforced by the rules.\\n* DRep\'s expiry is prevented by delaying the expiry for all DReps whenever there are no\\nproposals to vote on.\\n* Semantics of how CostModels are updated with Protocol Parameters have been changed to\\nallow for individual Plutus language version updates, rather than requiring a complete\\nreplacement of all CostModels\\n\\nBesides the new features there were also important performance and testing improvements:\\n\\n* In particular stake distribution computation and native script handling received some\\noptimizations.\\n* New testing DSL has been implemented that drastically simplifies writing unit tests for\\nledger rules.\\n* Integration tests and benchmarks are now possible for Conway era because of the overhaul\\nof functionality for initial funds and staking injection whenever node starts up in\\nConway, while bypassing all previous eras.\\n\\n## Low level summary\\n\\n### Conway era\\n\\n* [pull-3729] - DRep expiry update after a contiguous set of epochs with no proposals to vote on\\n* [pull-3739] - Rename some PParams to be consistent with Agda specification\\n* [pull-3743] - Move DRepDistr from VState to ConwayGovState\\n* [pull-3746] - Implement `tcTranslationContextL` for Shelley\\n* [pull-3737] - Implement EraTransition\\n* [pull-3749] - Add predicate failure: current treasury value mismatch in LEDGER\\n* [pull-3748] - Apply enacted treasury withdrawals\\n* [pull-3745] - Constitutional Committee Ratification\\n* [pull-3763] - Plutus interface improvements\\n* [pull-3771] - Changed how costmodel updates are applied\\n* [pull-3766] - Prevent updating protocol version with `PParamUpdate`\\n\\n### Performance\\n\\n* [pull-3765] - Improve native script handling\\n* [pull-3747] - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin\\n* [pull-3758] - Cardano-Perf regression: UMap.size regression fix\\n* [pull-3754] - Use Alonzo-style TxOut encoder when possible\\n\\n### Releasing\\n\\n* [pull-3742] - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes\\n* [pull-3744] - Changelog 8.4\\n* [pull-3752] - Patch release of cardano ledger conway 1.8.1.0\\n* [pull-3753] - Minor cleanup and changelog entries\\n* [pull-3760] - Fixup issues for release\\n* [pull-3764] - Bump plutus deps to 1.13\\n\\n### Testing\\n\\n* [pull-3734] - Removed `Shaped` instance for `Rep`\\n* [pull-3735] - Simplify the implementations of `hasOrd` and `hasEq`\\n* [pull-3728] - STS tests based on constraints\\n* [pull-3714] - Implement the remaining upgradable families\\n* [pull-3733] - Add some unit tests for Conway features\\n* [pull-3762] - Update CDDL for praos headers.\\n\\n\\n[pull-3729]: https://github.com/input-output-hk/cardano-ledger/pull/3729\\n[pull-3739]: https://github.com/input-output-hk/cardano-ledger/pull/3739\\n[pull-3742]: https://github.com/input-output-hk/cardano-ledger/pull/3742\\n[pull-3744]: https://github.com/input-output-hk/cardano-ledger/pull/3744\\n[pull-3743]: https://github.com/input-output-hk/cardano-ledger/pull/3743\\n[pull-3746]: https://github.com/input-output-hk/cardano-ledger/pull/3746\\n[pull-3728]: https://github.com/input-output-hk/cardano-ledger/pull/3728\\n[pull-3737]: https://github.com/input-output-hk/cardano-ledger/pull/3737\\n[pull-3735]: https://github.com/input-output-hk/cardano-ledger/pull/3735\\n[pull-3747]: https://github.com/input-output-hk/cardano-ledger/pull/3747\\n[pull-3749]: https://github.com/input-output-hk/cardano-ledger/pull/3749\\n[pull-3748]: https://github.com/input-output-hk/cardano-ledger/pull/3748\\n[pull-3745]: https://github.com/input-output-hk/cardano-ledger/pull/3745\\n[pull-3734]: https://github.com/input-output-hk/cardano-ledger/pull/3734\\n[pull-3714]: https://github.com/input-output-hk/cardano-ledger/pull/3714\\n[pull-3752]: https://github.com/input-output-hk/cardano-ledger/pull/3752\\n[pull-3754]: https://github.com/input-output-hk/cardano-ledger/pull/3754\\n[pull-3753]: https://github.com/input-output-hk/cardano-ledger/pull/3753\\n[pull-3760]: https://github.com/input-output-hk/cardano-ledger/pull/3760\\n[pull-3758]: https://github.com/input-output-hk/cardano-ledger/pull/3758\\n[pull-3764]: https://github.com/input-output-hk/cardano-ledger/pull/3764\\n[pull-3762]: https://github.com/input-output-hk/cardano-ledger/pull/3762\\n[pull-3763]: https://github.com/input-output-hk/cardano-ledger/pull/3763\\n[pull-3733]: https://github.com/input-output-hk/cardano-ledger/pull/3733\\n[pull-3771]: https://github.com/input-output-hk/cardano-ledger/pull/3771\\n[pull-3765]: https://github.com/input-output-hk/cardano-ledger/pull/3765\\n[pull-3766]: https://github.com/input-output-hk/cardano-ledger/pull/3766"},{"id":"2023-09-29-sre","metadata":{"permalink":"/cardano-updates/2023-09-29-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-sre.md","source":"@site/blog/2023-09-29-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-09-29T00:00:00.000Z","formattedDate":"September 29, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.68,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-09-29-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-29-ledger"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-27-mithril"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent changes, updates or improvements include:\\n* Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node [8.4.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre).\\n* The use of cardano-node [docker hub](https://hub.docker.com/r/inputoutput/cardano-node) will be deprecated in preference of [GHCR](https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node)\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Refactor parsing scripts, add github action automation, various bugfixes and cleanup: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72)\\n\\n### Cardano-parts\\n* Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: [cardano-parts-pull-8](https://github.com/input-output-hk/cardano-parts/pull/14)\\n\\n### Cardano-playground\\n* Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: [cardano-playground](https://github.com/input-output-hk/cardano-playground/pull/2)\\n\\n### Cardano-world\\n* Update sanchonet network to cardano-node 8.4.0: [cardano-world-compare](https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9)\\n* Rotate KES on shelley-qa: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d)"},{"id":"2023-09-27-mithril","metadata":{"permalink":"/cardano-updates/2023-09-27-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-27-mithril.md","source":"@site/blog/2023-09-27-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-09-27T00:00:00.000Z","formattedDate":"September 27, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.975,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-09-27-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-29-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-09-26-node-cli-api"}},"content":"## High level overview\\nThe Mithril team has released a new distribution [`2337.0`](https://github.com/input-output-hk/mithril/releases/tag/2337.0), which includes the following enhancements: support for `zstandard` compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.\\n\\nThey also completed the refactoring and standardization of the errors in the Mithril nodes and published an [Architectural decision record](https://mithril.network/doc/adr/6) on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.\\n\\nFinally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.\\n\\n## Low level overview\\n- Completed the issue **Release new `2337` distribution** [#1219](https://github.com/input-output-hk/mithril/issues/1219)\\n- Completed the issue **Errors refactoring** [#798](https://github.com/input-output-hk/mithril/issues/798)\\n- Completed the issue **Client traffic creates performance bottleneck in aggregator** [#1207](https://github.com/input-output-hk/mithril/issues/1207)\\n- Completed the issue **Record statistics about the downloaded snapshot in the aggregator** [#1127](https://github.com/input-output-hk/mithril/issues/1127)\\n- Completed the issue **Create a SPO checklist for KES keys update** [#1267](https://github.com/input-output-hk/mithril/issues/1267)\\n- Worked on the issue **Spike: Run client in browser WASM PoC** [#1254](https://github.com/input-output-hk/mithril/issues/1254)\\n- Worked on the issue **Benchmark aggregator performances** [#1220](https://github.com/input-output-hk/mithril/issues/1220)\\n- Worked on the issue **Activate Cloudflare protection of infrastructure** [#1230](https://github.com/input-output-hk/mithril/issues/1230)"},{"id":"2023-09-26-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-09-26-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-26-node-cli-api.md","source":"@site/blog/2023-09-26-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-09-26T00:00:00.000Z","formattedDate":"September 26, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.68,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-09-26-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-27-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-22-hydra"}},"content":"# 2023-09-13 - 2023-09-26\\n\\n## High level summary\\n* [cardano-node 8.4.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre) release suitable for SanchoNet.\\n* CLI continues making progress integrating governance features. During this sprint we integrated the **info** and **new-committee** governance actions.\\n* The team continued moving to the ERA top-level commands structure. Removed `--conway-era` flag from the legacy commands making conway era commands only accessible via `cardano-cli conway`.\\n* `stake-pool` command is now under the ERA top level structure.\\n* API continues integration with governance features, it is worth to higlight that now _ProposeNewCommitee_ uses the right key type (cc-cold)\\n\\n### cardano-cli\\n\\n- [Disambiguate 2-n flags in governance new-committee action](https://github.com/input-output-hk/cardano-cli/pull/302)\\n- [New version `cardano-cli-8.10.0.0`](https://github.com/input-output-hk/cardano-cli/pull/298)\\n- [Upgrade to `cardano-api-8.20.2`](https://github.com/input-output-hk/cardano-cli/pull/295)\\n- [cardano-cli: add governance create-info command](https://github.com/input-output-hk/cardano-cli/pull/292)\\n- [Release 8.9.0.0](https://github.com/input-output-hk/cardano-cli/pull/287)\\n- [Export `Cardano.CLI.Legacy.Options.pLegacyCardanoEra` for cardano-testnet](https://github.com/input-output-hk/cardano-cli/pull/286)\\n- [Rename `SomeWitness` to `SomeSigningWitness`.  Rename constructors to avoid name conflicts.](https://github.com/input-output-hk/cardano-cli/pull/284)\\n- [Update cardano-api to 8.20.1.0](https://github.com/input-output-hk/cardano-cli/pull/283)\\n- [Remove unused governance-related code](https://github.com/input-output-hk/cardano-cli/pull/282)\\n- [Fix typo in stake-pool help text and clarify drep queries arguments](https://github.com/input-output-hk/cardano-cli/pull/281)\\n- [Remove redundant conversions in JSON friendly instances ](https://github.com/input-output-hk/cardano-cli/pull/280)\\n- [Regularise era based command structure](https://github.com/input-output-hk/cardano-cli/pull/279)\\n- [Simplify era handling](https://github.com/input-output-hk/cardano-cli/pull/277)\\n- [Remove `--conway-era` flag](https://github.com/input-output-hk/cardano-cli/pull/276)\\n- [Era-based `stake-pool` command](https://github.com/input-output-hk/cardano-cli/pull/275)\\n- [Fix git revision in `version` command](https://github.com/input-output-hk/cardano-cli/pull/274)\\n- [cardano-cli-8.8.0.0](https://github.com/input-output-hk/cardano-cli/pull/273)\\n\\n### cardano-api\\n\\n- [Organise eon re-exports. Export `MaryEraOnwards`](https://github.com/input-output-hk/cardano-api/pull/265)\\n- [cardano-api-internal: ProposeNewCommittee: StakeKey -> CommitteeColdKey](https://github.com/input-output-hk/cardano-api/pull/264)\\n- [New version `cardano-api-8.21.0.0`](https://github.com/input-output-hk/cardano-api/pull/262)\\n- [Delete unused eon constraints](https://github.com/input-output-hk/cardano-api/pull/256)\\n- [Export ByronEraOnly](https://github.com/input-output-hk/cardano-api/pull/255)\\n- [Replace only `AdaSupportedInEra` and `MultiAssetSupportedInEra` with eons](https://github.com/input-output-hk/cardano-api/pull/254)\\n- [New version `cardano-api-8.20.2.0`](https://github.com/input-output-hk/cardano-api/pull/250)\\n- [Add JSON instance for Hash GenesisKey ](https://github.com/input-output-hk/cardano-api/pull/249)\\n- [Support more ledger constraints](https://github.com/input-output-hk/cardano-api/pull/248)\\n- [Rename `FeatureInEra` to `Eon`](https://github.com/input-output-hk/cardano-api/pull/247)\\n- [Release 8.20.1.0](https://github.com/input-output-hk/cardano-api/pull/246)\\n- [Fix DRep Stake and DRep Stake queries for empty lists](https://github.com/input-output-hk/cardano-api/pull/245)\\n- [Delete `TxFeesExplicitInEra` and `TxFeesImplicitInEra`](https://github.com/input-output-hk/cardano-api/pull/244)\\n- [Fix typos in some deserialization error messages](https://github.com/input-output-hk/cardano-api/pull/243)\\n- [Fix querying for dreps in `transaction build` in eras before conway](https://github.com/input-output-hk/cardano-api/pull/240)\\n\\n### cardano-node\\n\\n- [Trace Configuration Trace Message Enhancement](https://github.com/input-output-hk/cardano-node/pull/5480)\\n- [Bump versions for cardano-node-8.4.0-pre](https://github.com/input-output-hk/cardano-node/pull/5474)\\n- [Updated dependencies for cardano-node-8.4.0-pre](https://github.com/input-output-hk/cardano-node/pull/5467)\\n- [cardano-node: reduce orphan instances](https://github.com/input-output-hk/cardano-node/pull/5466)\\n\\n### cardano-testnet\\n\\n- [Bump versions for cardano-node-8.4.0-pre](https://github.com/input-output-hk/cardano-node/pull/5474)\\n- [Update to cardano-cli 8.9.0.0](https://github.com/input-output-hk/cardano-node/pull/5471)\\n- [Updated dependencies for cardano-node-8.4.0-pre](https://github.com/input-output-hk/cardano-node/pull/5467)\\n\\n### docs\\n\\n### CI & project maintenance"},{"id":"2023-09-22-hydra","metadata":{"permalink":"/cardano-updates/2023-09-22-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-22-hydra.md","source":"@site/blog/2023-09-22-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-09-22T00:00:00.000Z","formattedDate":"September 22, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.035,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-09-22-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-09-26-node-cli-api"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-09-22-performance-and-tracing"}},"content":"## High-level summary\\n\\nThis week, the Hydra team conducted the monthly review meeting in\\ncollaboration with Mithril, enhancing project coordination.\\n\\nThe team improved the gen-hydra-key node command for smoother usability\\nand identified concrete steps to enhance network resiliency in feature\\nitems [#188](https://github.com/input-output-hk/hydra/issues/188),\\n[#1080](https://github.com/input-output-hk/hydra/issues/1080), and\\n[#1079](https://github.com/input-output-hk/hydra/issues/1079).\\nAdditionally, they contributed the aiken-mode editor integration to the\\naiken-lang organization, updated dependencies to utilize cardano-api\\n8.20, and published the Hydra security advisory CVE-2023-42806 with a\\nworkaround available for users.\\n\\nThese efforts demonstrate the team\\\\\'s commitment to project improvement,\\nsecurity, and open-source community collaboration.\\n\\n## What did the team achieve this week\\n\\n- Conducted the monthly review meeting together with Mithril\\n- Improved gen-hydra-key node command\\n  [#1077](https://github.com/input-output-hk/hydra/pull/1077)\\n- Established a clear plan to improve resiliency of network and manifested\\n  feature items [#188](https://github.com/input-output-hk/hydra/issues/188),\\n  [#1080](https://github.com/input-output-hk/hydra/issues/1080) and\\n  [#1079](https://github.com/input-output-hk/hydra/issues/1079)\\n- Moved [aiken-mode](https://github.com/aiken-lang/aiken-mode) (created by SN)\\n  to aiken-lang organization\\n- Updated dependencies to using cardano-api 8.20\\n  [#1075](https://github.com/input-output-hk/hydra/pull/1075)\\n- Published security advisory\\n  [CVE-2023-42806](https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq)\\n  (workaround available)\\n\\n## What are the goals of next week\\n\\n- Write-up the monthly report for September\\n- Finish \\"network resilience to disconnects\\"\\n  [#188](https://github.com/input-output-hk/hydra/issues/188)\\n- Finish kupo integration with hydra\\n  [#1078](https://github.com/input-output-hk/hydra/issues/1078)\\n- Discuss and decide on using aiken or not\\n- Address the published security advisory\\n  [CVE-2023-42806](https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq)\\n  (to not require workaround)\\n- Ideally, release 0.13.0"},{"id":"2023-09-22-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-09-22-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-22-performance-and-tracing.md","source":"@site/blog/2023-09-22-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-09-22T00:00:00.000Z","formattedDate":"September 22, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.445,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-09-22-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-22-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-09-20-consensus"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve performed both low-level network and high-level variance analysis of our benchmarking clusters.\\n* Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.\\n* Tracing: Work on machine-readable tracing of tracer configuration is ongoing.\\n* Nomad backend: We\'ve been able to eliminate several possible confounders on the nomad cluster.\\n* Team: We\'re currently onboarding a new team member: Welcome to Cardano Performance & Tracing, Baldur Bl\xf6ndal!\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nAs part of the effort to bring the Nomad backend into production use, we\'ve been equipping both that and the existing benchmarking\\nbackend with means to measure and document network latency for each run. Furthermore we\'ve implemented means to\\ncapture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences\\nin the behaviour of the underlying networking stack at OS level.  \\n\\nAdditionally, we\'re running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We\'ve concluded that baseline profile runs aren\'t directly comparable between the two, so we decided\\nto compare standard deviations instead to validate the measurements from nomad.\\n\\n### Infrastructure\\n\\nReporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline\\nhave been merged to `master`. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  \\n\\nBeyond that, we\'ve looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for `trace-dispatcher` and `tx-generator` we were able to address those issues.\\n\\n### Tracing\\n\\nAfter various steps in constructing a configuration upon node startup, it is vital to document\\nwhich runtime configuration the node arrived eventually. We\'re working on providing a machine-readable JSON/YAML\\ntrace message for that purpose.  \\n\\nThis will facilitate hot-reloading a node\'s tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. \\n\\n### Nomad backend\\n\\nAs with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it\\nproduces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an\\nimpact on our measurements, as we\'d be basically using two different instruments to take them.  \\n\\nAlong the way we\'ve already been successful in eliminating some possible confounders that had been introduced by the nomad service\\nor the slightly different system architecture of the new cluster.\\n\\n### New team member\\n\\nBaldur Bl\xf6ndal is an extremely capable and experienced Haskell developer. Also, he\'s an excellent fit for our existing team.\\nSo I\'m very pleased to welcome him onboard with IOG, and with Performance & Tracing. He will be working on `cardano-tracer`, the component receiving, processing and making available node traces and metrics."},{"id":"2023-09-20-consensus","metadata":{"permalink":"/cardano-updates/2023-09-20-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-20-consensus.md","source":"@site/blog/2023-09-20-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-09-20T00:00:00.000Z","formattedDate":"September 20, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.82,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-09-20-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-09-22-performance-and-tracing"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-20-mithril"}},"content":"## High level summary\\n\\nWe have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.\\nWe are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.\\nOn the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.\\nWe also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.\\n\\n### UTxO-HD\\n\\n- We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version ([349](https://github.com/input-output-hk/ouroboros-consensus/pull/349)). System level benchmark results are pending.\\n- Regarding the workaround to keep the node\'s baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders ([344](https://github.com/input-output-hk/ouroboros-consensus/issues/344)), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.\\n- We also brought the `UTxO-HD` branch up to date with node version `8.4.0`.\\n\\n### Genesis\\n\\n- We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.\\n  We are now drafting the final self-contained argument. ([4157](https://github.com/input-output-hk/ouroboros-network/issues/4157))\\n\\n### Support\\n\\n- We debugged a bad parameter update on the `Babbage` to `Conway` transition in the SanchoNet testnet ([339](https://github.com/input-output-hk/ouroboros-consensus/issues/339)).\\n  A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix ([340](https://github.com/input-output-hk/ouroboros-consensus/pull/340), [354](https://github.com/input-output-hk/ouroboros-consensus/pull/354), and [355](https://github.com/input-output-hk/ouroboros-consensus/pull/355))\\n  However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the `ConsensusProtocol` type class and the `HardForkBlock` combinator ([345](https://github.com/input-output-hk/ouroboros-consensus/issues/345) and [346](https://github.com/input-output-hk/ouroboros-consensus/pull/346)). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later."},{"id":"2023-09-20-mithril","metadata":{"permalink":"/cardano-updates/2023-09-20-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-20-mithril.md","source":"@site/blog/2023-09-20-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-09-20T00:00:00.000Z","formattedDate":"September 20, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":0.935,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-09-20-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-09-20-consensus"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-15-goedel"}},"content":"## High level overview\\nThis week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. \\n\\nFinally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.\\n\\n## Low level overview\\n- Completed the issue **Add snapshot compression parameters in infrastructure deployments** [#1200](https://github.com/input-output-hk/mithril/issues/1200)\\n- Completed the issue **Add Cloudflare protection of infrastructure** [#986](https://github.com/input-output-hk/mithril/issues/986)\\n- Worked on the issue **Record statistics about the downloaded snapshot in the aggregator** [#1127](https://github.com/input-output-hk/mithril/issues/1127)\\n- Worked on the issue **Error refactoring** [#798](https://github.com/input-output-hk/mithril/issues/798)\\n- Worked on the issue **Activate Cloudflare protection of infrastructure** [#1230](https://github.com/input-output-hk/mithril/issues/1230)\\n- Worked on the issue **Release new `2337` distribution** [#1219](https://github.com/input-output-hk/mithril/issues/1219)\\n- Completed the issue **Upgrade dependencies** [#1238](https://github.com/input-output-hk/mithril/issues/1238)"},{"id":"2023-09-15-goedel","metadata":{"permalink":"/cardano-updates/2023-09-15-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-goedel.md","source":"@site/blog/2023-09-15-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-09-15T00:00:00.000Z","formattedDate":"September 15, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.44,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-09-15-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-20-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-15-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is currently formalising mini protocols and also further\\ndeveloping the performance modelling prototype.\\n\\n## Details\\n\\n* working on collating and open sourcing performance analysis prototype\\n\\n* improvements to Ouroboros Praos specification in Isabelle\\n\\n* working on formalising chain sync mini-protocol\\n\\n* reviewing an alternatice semantics for DeltaQ\\n\\n* Seminar talk at U. Bergen on algebraic properties of timeliness"},{"id":"2023-09-15-hydra","metadata":{"permalink":"/cardano-updates/2023-09-15-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-hydra.md","source":"@site/blog/2023-09-15-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-09-15T00:00:00.000Z","formattedDate":"September 15, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.94,"hasTruncateMarker":false,"authors":[{"name":"Sasha Bogicevic","title":"Hydra Software Engineer","url":"https://github.com/v0d1ch","imageURL":"https://github.com/v0d1ch.png","key":"v0d1ch"},{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-09-15-hydra","authors":["v0d1ch","ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-15-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-15-ledger"}},"content":"## High-level summary\\n\\nThis week, most of the Hydra team was attending a cardano scaling workshop in\\nNantes, France. They used this oportunity to meet fellow mithril team and spend\\nsome time together to hack on some code and, as always, reflect on the past work\\nand find optimal path forward for both projects. They also fixed a bug that\\ncaused hydra-node to crash when querying L1, worked on a new network resillience\\nproof-of-concept and accepted a new ADR related to stateless transaction\\nobservation.\\n\\n## What did the team achieve this week\\n\\n- Cardano scaling workshop with members of hydra and mithril teams \\n- Accepted user contribution for possible new use-case [#1048](https://github.com/input-output-hk/hydra/pull/1048)\\n- Fix for the hydra-node crash related to internal wallet query [#1053](https://github.com/input-output-hk/hydra/pull/1053)\\n- Collected experimental CI findings [#1070](https://github.com/input-output-hk/hydra/pull/1070)\\n- Propose first POC for the network resilience [#1074](https://github.com/input-output-hk/hydra/pull/1074)\\n\\n## What are the goals of next week\\n\\n- Monthly review meeting & report including updates from Mithril\\n- Review POC and discuss our options for the network resilience\\n- Update cardano-api to version 8.20\\n- Address TODOs on aiken commit validator [#1072](https://github.com/input-output-hk/hydra/pull/1072)\\n- Complete hydra-support in kupo [kupo#117](https://github.com/CardanoSolutions/kupo/pull/117)"},{"id":"2023-09-15-ledger","metadata":{"permalink":"/cardano-updates/2023-09-15-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-ledger.md","source":"@site/blog/2023-09-15-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-09-15T00:00:00.000Z","formattedDate":"September 15, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.645,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-09-15-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-15-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-09-15-network"}},"content":"## High level summary\\n\\nThe Ledger team\'s focus is still mainly on the Conway era implementation.\\n\\nWe were able to add ability to specify initial Constitutional Comittee and the initial\\nversion of Constitution. Priority in which Governance Action are now enacted matches the\\nspecification. DRep\'s deposits are now properly accounted for. Governance actions that are\\nnot allowed to be voted on by Stake Pool operators and Constitutional Committee members\\nare prevented by transaction submission failure, rather than simply being ignored. There\\nwas a few important CDDL fixes as well as a lot of new round trip serialization\\ntests. Constraint based testing framework has also received a lot of improvements.\\n\\n## Low level summary\\n\\n### Conway era\\n\\n* [pull-3681] - Conway Genesis additions\\n* [pull-3690] - Preserve the order of ProposalProcedures\\n* [pull-3705] - Removed ProtVer from EnactState\\n* [pull-3700] - Add conway-specific certs to deposit/refunds\\n* [pull-3704] - Add comments on deprecating certs to Conway CDDL\\n* [pull-3698] - Reordering of governance actions\\n* [pull-3712] - Disallow empty fields in ConwayTxBodyRaw\\n* [pull-3716] - Abstract threshold calculation\\n* [pull-3725] - Fix mistaken use of dollar sign in cddl files\\n* [pull-3718] - Predicate failure for mismatched Voter GovAction\\n* [pull-3721] - Committee expiration, validation and modification\\n\\n### Improvements and releasing\\n\\n* [pull-3629] - Add rule-transition diagrams in dot syntax\\n* [pull-3680] - Bump Plutus deps to 1.11\\n* [pull-3708] - Post release changes\\n\\n### Testing\\n\\n* [pull-3730] - Implement `Show` instance for `Rep` using `IsTypeable`\\n* [pull-3697] - Rewrite testEql using Typeable to make it impossible to forget cases\\n* [pull-3709] - Add many new features to the Constrained modues in cardano-ledger-test\\n* [pull-3726] - Conway and other eras serialization roundtrip tests\\n* [pull-3713] - Improve CI resiliency against GitHub issues\\n\\n[pull-3681]: https://github.com/input-output-hk/cardano-ledger/pull/3681\\n[pull-3690]: https://github.com/input-output-hk/cardano-ledger/pull/3690\\n[pull-3705]: https://github.com/input-output-hk/cardano-ledger/pull/3705\\n[pull-3680]: https://github.com/input-output-hk/cardano-ledger/pull/3680\\n[pull-3708]: https://github.com/input-output-hk/cardano-ledger/pull/3708\\n[pull-3700]: https://github.com/input-output-hk/cardano-ledger/pull/3700\\n[pull-3704]: https://github.com/input-output-hk/cardano-ledger/pull/3704\\n[pull-3698]: https://github.com/input-output-hk/cardano-ledger/pull/3698\\n[pull-3713]: https://github.com/input-output-hk/cardano-ledger/pull/3713\\n[pull-3712]: https://github.com/input-output-hk/cardano-ledger/pull/3712\\n[pull-3697]: https://github.com/input-output-hk/cardano-ledger/pull/3697\\n[pull-3629]: https://github.com/input-output-hk/cardano-ledger/pull/3629\\n[pull-3716]: https://github.com/input-output-hk/cardano-ledger/pull/3716\\n[pull-3725]: https://github.com/input-output-hk/cardano-ledger/pull/3725\\n[pull-3718]: https://github.com/input-output-hk/cardano-ledger/pull/3718\\n[pull-3709]: https://github.com/input-output-hk/cardano-ledger/pull/3709\\n[pull-3726]: https://github.com/input-output-hk/cardano-ledger/pull/3726\\n[pull-3721]: https://github.com/input-output-hk/cardano-ledger/pull/3721\\n[pull-3730]: https://github.com/input-output-hk/cardano-ledger/pull/3730"},{"id":"2023-09-15-network","metadata":{"permalink":"/cardano-updates/2023-09-15-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-network.md","source":"@site/blog/2023-09-15-network.md","title":"Network Team Update","description":"High-level overview of sprint 44","date":"2023-09-15T00:00:00.000Z","formattedDate":"September 15, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.41,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-09-15-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-15-ledger"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-15-sre"}},"content":"## High-level overview of [sprint 44][sprint-44]\\n\\n### Bootstrap Peers\\n\\nIn this sprint, we focused on developing bootstrap peers.\\n\\nThanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we\\nidentified a possible improvement to bootstrap peers. A more detailed\\ndescription is available [here][ouroboros-network-#4675].\\n\\n### Cardano-Node-8.4.0 Release\\n\\nWe also were responsible for the `cardano-node-8.4.0-pre` release.  A final\\nintegration [PR][cardano-node-#5467] is currently being merged. We published\\nnew versions of `ouroboros-consensus`, `cardano-api` and `cardano-cli`.\\n\\n### Towards Typed Protocols 0.2.0.0\\n\\nWe also updated the future `typed-protocols-0.2.0.0` and its integration with\\n`cardano-node`.  This is towards our goal which we planned for the next\\nquarter.  The identified tasks are to fix breaking tests, and then measure and\\naddress possible performance regressions.\\n\\n### Tech Debt\\n\\nMark Tullsen (Galois) submitted two more PRs: [ouroboros-network-#4663],\\n[ouroboros-network-#4664].  We provided feedback on their other pull requests: [ouroboros-network-#4661] and \\n[ouroboros-network-#4660].\\n\\n### P2P adoption\\n\\nIn the last two weeks, there was a regression in P2P adoption concerning\\nthe number of SPOs or stakes, although the number of overall P2P relays has\\nincreased.  Karl Knutsson ([Cardano Foundation][CF]) is investigating \\nthis issue.\\n![P2P relays](/images/network/2023-09-14-p2p-relays.png)\\n\\n\\nThe following graphs show several different versions of relays running on the mainnet.  The\\ngreen line `NodeToNodeVersionV10.True` denotes P2P relays, which slowly\\nincrease over time.  The `V9` and earlier versions of the `node-to-node`\\nthe protocol indicates nodes version `1.35.x` or earlier.\\n![node versions](/images/network/2023-09-14-relay-versions.png)\\n\\nData has been kindly provided by [Cardano Foundation][CF] and their mainnet\\nmonitoring infrastructure.\\n\\n### Open Source\\n\\nWe are in the process of upstreaming our ffi to Windows Named Pipes API to the `Win32` package, see [win32-220].\\n\\n[CF]: https://cardanofoundation.org/\\n[Galois]: https://galois.com/\\n[cardano-node-#5467]: https://github.com/input-output-hk/cardano-node/pull/5467\\n[ouroboros-network-#3836]: https://github.com/input-output-hk/ouroboros-network/issues/3836\\n[ouroboros-network-#4660]: https://github.com/input-output-hk/ouroboros-network/pull/4660\\n[ouroboros-network-#4661]: https://github.com/input-output-hk/ouroboros-network/pull/4661\\n[ouroboros-network-#4663]: https://github.com/input-output-hk/ouroboros-network/pull/4663\\n[ouroboros-network-#4664]: https://github.com/input-output-hk/ouroboros-network/pull/4664\\n[ouroboros-network-#4675]: https://github.com/input-output-hk/ouroboros-network/issues/4675\\n[sprint-44]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22\\n[win32-#220]: https://github.com/haskell/win32/pull/220"},{"id":"2023-09-15-sre","metadata":{"permalink":"/cardano-updates/2023-09-15-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-15-sre.md","source":"@site/blog/2023-09-15-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-09-15T00:00:00.000Z","formattedDate":"September 15, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":1.055,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-09-15-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-09-15-network"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-09-14-db-sync"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent updates or improvements include:\\n* Sanchonet environment was updated to 8.3.0-pre.\\n* [Cardano-parts](https://github.com/input-output-hk/cardano-parts) now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is [here](https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108).\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: [capkgs-compare](https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680)\\n\\n### Cardano-ops\\n* Adjust mainnet p2p relays to ~100%, with a legacy canary: [cardano-ops-commit](https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710)\\n\\n### Cardano-parts\\n* Utilize content addressed binaries to significantly improve eval, build and devShell performance: [cardano-parts-pull-8](https://github.com/input-output-hk/cardano-parts/pull/8)\\n* Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: [cardano-parts-pull-10](https://github.com/input-output-hk/cardano-parts/pull/10)\\n* Fix warns thrown during some builds and devShell usage: [cardano-parts-pull-11](https://github.com/input-output-hk/cardano-parts/pull/11)\\n* Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: [cardano-parts-pull-12](https://github.com/input-output-hk/cardano-parts/pull/12)\\n* Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: [cardano-parts-pull-13](https://github.com/input-output-hk/cardano-parts/pull/13)\\n\\n### Cardano-perf\\n* Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: [cardano-perf-compare](https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c)\\n\\n### Cardano-playground\\n* Define preliminary cardano-world networks on cardano-playground: [cardano-playground](https://github.com/input-output-hk/cardano-playground/pull/1)\\n\\n### Cardano-world\\n* Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: [cardano-world-compare](https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2)\\n* Update sanchonet network to 8.3.0: [cardano-world-compare](https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated)"},{"id":"2023-09-14-db-sync","metadata":{"permalink":"/cardano-updates/2023-09-14-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-14-db-sync.md","source":"@site/blog/2023-09-14-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-09-14T00:00:00.000Z","formattedDate":"September 14, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.47,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-09-14-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-15-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-09-12-node-cli-api"}},"content":"## High level summary\\nWe have created a DBSync tag `sancho-1-1-0` which can follow sanchonet. Also\\nthe team has ran a number of benchmarks and tests for the new options/flavours of DBSync\\nand prepared a blogpost which summorises them, for downstream components.\\n\\n## Lower level summary\\n- Integration of node-8.3.x and support for Sanchonet on Conway\\n[#1498](https://github.com/input-output-hk/cardano-db-sync/pull/1498)\\n- Simplifications of new feautures\\n[#1496](https://github.com/input-output-hk/cardano-db-sync/pull/1496)\\n- Makes it impossible to restart DBSync with different schema options and adds\\ntests for them\\n[#1466](https://github.com/input-output-hk/cardano-db-sync/pull/1466)\\n- CI fixes\\n[#1494](https://github.com/input-output-hk/cardano-db-sync/pull/1494)\\n[#1491](https://github.com/input-output-hk/cardano-db-sync/pull/1491)\\n- Prepared a blogpost about different DBSync options\\n[blog](https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf)"},{"id":"2023-09-12-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-09-12-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-12-node-cli-api.md","source":"@site/blog/2023-09-12-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-09-12T00:00:00.000Z","formattedDate":"September 12, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":2.605,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-09-12-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-09-14-db-sync"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-08-hydra"}},"content":"# 2023-08-30 - 2023-09-12\\n\\n## High level summary\\n\\nRelease of [Cardano-node 8.3.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre) for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.\\nThis release completes [phase 2 of SanchoNet feature roll out plan](https://sancho.network/get-started#sanchonet-feature-rollout)\\n\\nCLI continues on its migration to a era-based top-level commands. This sprint we moved `text-view`, `key`, `query`, `genesis`, `node`, `stake-address`, `transaction` and `address` into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.\\n\\nWe are moving the `drep delegation-certificate` to the stake-address command so delegating to a drep is done via  `stake-addres vote-delegation-certificate`. Along the same lines, we are renaming\\n`stake-address delegation-certificate` (delagating to a stake pool) to `stake-address stake-delegation-certificate` to distinguish between stake delegation to a pool and votes delegation to a drep. On top\\nof that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly `stake-address stake-and-vote-delegation-certificate`. Note that change is not included on  8.3 but will come on 8.4.\\nRemoving `--conway-era` flag from all the `transaction` sub-commands.\\n\\nUpdate description fields in delegation certificates from `Stake Address Delegation Certificate` to respectively (Conway onwards):\\n  - `Stake Delegation Certificate`\\n  - `Vote Delegation Certificate`\\n  - `Stake and Vote Delegation Certificate`\\n\\n### cardano-cli\\n\\n- [New `stake-address vote-delegation-certificate` command](https://github.com/input-output-hk/cardano-cli/pull/261)\\n- [New `stake-address stake-and-vote-delegation-certificate` command](https://github.com/input-output-hk/cardano-cli/pull/257)\\n- [Change `TreasuryWithdrawalCmd` to a record](https://github.com/input-output-hk/cardano-cli/pull/260)\\n- [Simplify `stake-address stake-delegation-certificate` command across eras](https://github.com/input-output-hk/cardano-cli/pull/256)\\n- [Remove `EraBased` prefix and add `Cmd` suffix](https://github.com/input-output-hk/cardano-cli/pull/254)\\n- [#221 Update description fields on delegation certificates](https://github.com/input-output-hk/cardano-cli/pull/250)\\n- [Update error message for eras mismatch between node and cli](https://github.com/input-output-hk/cardano-cli/pull/249)\\n- [Era based `address` commands](https://github.com/input-output-hk/cardano-cli/pull/248)\\n- [Consistent naming for `stake-pool` command related types, functions and modules](https://github.com/input-output-hk/cardano-cli/pull/246)\\n- [Disable `redundant-constraints` warning only on `ghc-8.10.7`](https://github.com/input-output-hk/cardano-cli/pull/245)\\n- [Remove `EraBased` prefix from era-based commands](https://github.com/input-output-hk/cardano-cli/pull/244)\\n- [Rename `delegation-certificate` to `stake-delegation-certificate` only in era-based command structure](https://github.com/input-output-hk/cardano-cli/pull/243)\\n- [Move `node` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/242)\\n- [Era-based `stake-address` command group](https://github.com/input-output-hk/cardano-cli/pull/241)\\n- [Remove duplicate instances and add new `FeatureInEra ShelleyBasedEra` instance](https://github.com/input-output-hk/cardano-cli/pull/240)\\n- [Remove `EraBased` prefix from errors](https://github.com/input-output-hk/cardano-cli/pull/239)\\n- [Move `text-view` run commands implementation into era-based](https://github.com/input-output-hk/cardano-cli/pull/238)\\n- [Move `key` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/237)\\n- [Move `query` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/236)\\n- [Move `genesis` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/235)\\n- [Move `pool` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/234)\\n- [Move `stake-address` run commands implementation into era based](https://github.com/input-output-hk/cardano-cli/pull/233)\\n- [Move `address` run command implementation into era-based](https://github.com/input-output-hk/cardano-cli/pull/232)\\n- [Delete legacy `conway governance` commands](https://github.com/input-output-hk/cardano-cli/pull/231)\\n- [Era sensitive transaction run commands](https://github.com/input-output-hk/cardano-cli/pull/230)\\n- [Move transaction command code into era based](https://github.com/input-output-hk/cardano-cli/pull/229)\\n- [Fix query `key-period-info`](https://github.com/input-output-hk/cardano-cli/pull/228)\\n- [New `hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw` test](https://github.com/input-output-hk/cardano-cli/pull/227)\\n- [Prefix complex delegation certificate option](https://github.com/input-output-hk/cardano-cli/pull/225)\\n\\n### cardano-api\\n\\n- [Fix test constraints functions](https://github.com/input-output-hk/cardano-api/pull/233)\\n- [New `caseShelleyToBabbageAndConwayEraOnwards` function](https://github.com/input-output-hk/cardano-api/pull/231)\\n- [Delete deprecated functions and types](https://github.com/input-output-hk/cardano-api/pull/230)\\n- [Release 8.19.0.0](https://github.com/input-output-hk/cardano-api/pull/228)\\n- [`FeatureInEra` instances for `CardanoEra` and `ShelleyBasedEra`](https://github.com/input-output-hk/cardano-api/pull/226)\\n- [New `mapSomeAddressVerification` key function](https://github.com/input-output-hk/cardano-api/pull/225)\\n- [Fix type signature of `queryGenesisParameters` so that it can be queried in any era](https://github.com/input-output-hk/cardano-api/pull/224)\\n- [Release 8.18.0.0](https://github.com/input-output-hk/cardano-api/pull/222)\\n- [Fix exception when executing drep queries](https://github.com/input-output-hk/cardano-api/pull/221)\\n\\n### cardano-node\\n\\n- [Cardano-node 8.3.0-pre](https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre)\\n- [Fix deadlock issue with stdout tracer in tx-generator](https://github.com/input-output-hk/cardano-node/pull/5460)\\n- [nix: workbench tracing configuration](https://github.com/input-output-hk/cardano-node/pull/5453)\\n\\n### cardano-testnet\\n\\n### docs\\n\\n### CI & project maintenance"},{"id":"2023-09-08-hydra","metadata":{"permalink":"/cardano-updates/2023-09-08-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-08-hydra.md","source":"@site/blog/2023-09-08-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-09-08T00:00:00.000Z","formattedDate":"September 8, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.06,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-09-08-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-09-12-node-cli-api"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-07-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team improved the commit process with support for inline\\ndatums. They simplified the chain layer by refactoring how the chain state is\\npersisted. Updates to the Hydra tutorial were completed, including CI workflows\\nto keep it up-to-date. The team engaged in discussions with researchers about\\nincremental commits & decommits, and drafted an architectural decision record\\nfor a resource-based API. They also explored simpler solutions for the upcoming\\nnetwork resilience feature.\\n\\n## What did the team achieve this week\\n\\n-   Support InlineScriptDatum in commit\\n    [#1043](https://github.com/input-output-hk/hydra/issues/1043)\\n-   Refactored chain state persistency\\n    [#1049](https://github.com/input-output-hk/hydra/pull/1049)\\n-   Completed tutorial updates (by adding CI and some cleanup)\\n    [#997](https://github.com/input-output-hk/hydra/issues/997)\\n-   Intersect Open Source committee meeting\\n-   Experimented with various models to better express the \\\\\\"Network\\n    resilience problem\\\\\\" to find a KISS solution for\\n    [#188](https://github.com/input-output-hk/hydra/issues/188)\\n-   Drafted and discussed incremental de-/commit features within team\\n    and with researchers\\n    [#199](https://github.com/input-output-hk/hydra/issues/199) and\\n    [#1057](https://github.com/input-output-hk/hydra/issues/1057)\\n-   Created ADR for a resource based overhaul of the API\\n    [#1028](https://github.com/input-output-hk/hydra/pull/1028)\\n\\n## What are the goals of next week\\n\\n-   Meetup of Hydra & Mithril contributors in Nantes, France\\n-   Integrated cardano-api 8.15 to have GHC 9.6 support\\n-   A clear design for incremental commits (decommits are already\\n    understood)\\n-   An ADR for improving tx construction & observation to not need chain\\n    state"},{"id":"2023-09-07-mithril","metadata":{"permalink":"/cardano-updates/2023-09-07-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-07-mithril.md","source":"@site/blog/2023-09-07-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-09-07T00:00:00.000Z","formattedDate":"September 7, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.53,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-09-07-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-08-hydra"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-09-07-performance-and-tracing"}},"content":"## High level overview\\nThe Mithril team has released a new distribution [`2335.0`](https://github.com/input-output-hk/mithril/releases/tag/2335.0) which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.\\n\\nThey have also worked on snapshots enhancements: implementation of the `zstandard` compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.\\n\\nFinally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.\\n\\n## Low level overview\\n- Completed the issue `Use \'zstandard\' compression for snapshot archives` [#876](https://github.com/input-output-hk/mithril/issues/876)\\n- Completed the issue `Design & implement stress test tool for aggregator - phase 2` [#1155](https://github.com/input-output-hk/mithril/issues/1155)\\n- Completed the issue `Provide progress information with \'--json\' option in Client` [#1095](https://github.com/input-output-hk/mithril/issues/1095)\\n- Completed the issue `Make client download and extract the archive simultaneously` [#1115](https://github.com/input-output-hk/mithril/issues/1115)\\n- Completed the issue `Add aggregator Cardano node version in snapshot artifact` [#948](https://github.com/input-output-hk/mithril/issues/948)\\n- Completed the issue `Make Cardano node version part of the Mithril network configuration` [#947](https://github.com/input-output-hk/mithril/issues/947)\\n- Completed the issue `Post deployment \'mainnet\' infrastructure` [#1091](https://github.com/input-output-hk/mithril/issues/1091)\\n- Worked on the issue `Errors refactoring` [#798](https://github.com/input-output-hk/mithril/issues/798)\\n- Worked on the issue `Add Cloudflare protection of infrastructure` [#986](https://github.com/input-output-hk/mithril/issues/986)\\n- Completed the issue `Failed to restore recent snapshot with strange error` [#1160](https://github.com/input-output-hk/mithril/issues/1160)\\n- Completed the issue `Update \'ed25519-dalek\' to \'2.0.0\'` [#1188](https://github.com/input-output-hk/mithril/issues/1188)\\n- Completed the issue `Add target networks blocks in release notes` [#1151](https://github.com/input-output-hk/mithril/issues/1151)\\n- Completed the issue `Fix end to end \'wait_for_the_expected_time\' test` [#1191](https://github.com/input-output-hk/mithril/issues/1191)\\n- Completed the issue `Fix docs \'git checkout\' command` [#1174](https://github.com/input-output-hk/mithril/issues/1174)"},{"id":"2023-09-07-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-09-07-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-07-performance-and-tracing.md","source":"@site/blog/2023-09-07-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-09-07T00:00:00.000Z","formattedDate":"September 7, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.3,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-09-07-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-09-07-mithril"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-09-06-consensus"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.\\n* Infrastructure: Various improvements of our analysis pipeline have been merged to `master`, supporting safe log truncation.\\n* Tracing: Namespace consistency checks have been merged to `master` along with a curated configuration for benchmarking.\\n* Nomad backend: We\'re productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nWe\'ve completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  \\n\\nWith our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  \\n\\nThe Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.\\n\\n### Infrastructure\\n\\nAs a result of optimizing in-memory representation of log objects, which are constructed from a node\'s traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation\\noperation that keeps the interdependencies of block events intact.  \\n\\nTruncation might happen at a slightly different point\\nin time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.\\n\\n### Tracing\\n\\nConsistency checking of namespace implementation and configuration when using the new system has been completed.\\nThis feature enables feedback on when tracer implementation details in some component might have changed. It\'s also able to detect when a configuration used for operating a `cardano-node` shows inconsistencies with the namespaces the system provides - and hence needs attention.  \\n \\nFurthermore, we\'ve created a fine-grained configuration of the new system that caters to benchmarking\'s need of very many\\ndetailed trace messages. It\'s aimed at mirroring the same amount of trace messages, and information, we\'re seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.\\n\\n### Nomad backend\\n\\nThe new backend is currently being used for further validation with regard to the existing cluster. Additionally, we\'re using it in production mode to comparatively benchmark both tracing systems after merging past month\'s optimizations - which is the\\nfirst real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend."},{"id":"2023-09-06-consensus","metadata":{"permalink":"/cardano-updates/2023-09-06-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-06-consensus.md","source":"@site/blog/2023-09-06-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-09-06T00:00:00.000Z","formattedDate":"September 6, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.22,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-09-06-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-09-07-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-01-goedel"}},"content":"## High level summary\\n\\nWe were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.\\nOn the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.\\nThe Consensus release engineer finished his rotation: version `8.3.0-pre` of `cardano-node` is releasing 2023 September 5.\\n\\n## UTxO-HD\\n\\n- We ran the first successful system-level benchmarks for UTxO-HD (see [#203](https://github.com/input-output-hk/ouroboros-consensus/issues/203)) using the *in-memory* backend.\\n    - We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.\\n    - After the mempool regression is fixed the benchmarks need to be ran again.\\n    - System-level UTxO-HD benchmarks with the LMDB are still pending.\\n- UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see [#344](https://github.com/input-output-hk/ouroboros-consensus/issues/344)).\\n- We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in `GetUTxOByAddress` (see [this comment](https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418)). Preliminary results are promising.\\n- Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory ([#344](https://github.com/input-output-hk/ouroboros-consensus/issues/344)), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.\\n\\n## Tech debt\\n\\n- We added tests that Consensus emits valid CBOR ([#3099](https://github.com/input-output-hk/ouroboros-network/issues/3099)). This helped us detect a couple of serialization bugs. The tests still need to be merged into the `main` branch ([#323](https://github.com/input-output-hk/ouroboros-consensus/pull/323)).\\n\\n## Support\\n\\n- [Nick Frisby](https://github.com/nfrisby) finished his release engineer rotation; `cardano-node 8.3.0-pre` is releasing 2023 September 5.\\n- We helped to investigate a protocol version bug in Sanchonet (see [#3491](https://github.com/input-output-hk/cardano-ledger/issues/3491)).\\n- We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see [#91](https://github.com/input-output-hk/ouroboros-consensus/issues/91)."},{"id":"2023-09-01-goedel","metadata":{"permalink":"/cardano-updates/2023-09-01-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-goedel.md","source":"@site/blog/2023-09-01-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-09-01T00:00:00.000Z","formattedDate":"September 1, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.43,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-09-01-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-09-06-consensus"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-01-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is currently formalising mini protocols and also further\\ndeveloping the performance modelling prototype.\\n\\n## Details\\n\\n* finalising a presenting performance analysis internship work to the\\n  formal methods team\\n\\n* developed a new Isabelle mini-protocol framework and examples\\n\\n* planning an extended version of the ICE DeltaQ paper\\n\\n* working on algebraic rules for properisation of any-to-finish"},{"id":"2023-09-01-hydra","metadata":{"permalink":"/cardano-updates/2023-09-01-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-hydra.md","source":"@site/blog/2023-09-01-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-09-01T00:00:00.000Z","formattedDate":"September 1, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.93,"hasTruncateMarker":false,"authors":[{"name":"Sasha Bogicevic","title":"Hydra Software Engineer","url":"https://github.com/v0d1ch","imageURL":"https://github.com/v0d1ch.png","key":"v0d1ch"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-09-01-hydra","authors":["v0d1ch"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-09-01-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-01-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team focused primarily on changes needed in the network\\nlayer and have the first draft document related to needed design. They also\\nimproved the user experience by allowing a commit using inline datums.\\nDiscussed the off-chain governance with researchers and improved internal model\\ntests. \\n\\n## What did the team achieve this week\\n\\n- Monthly report published\\n- Small changes to hydraw and tutorial in light of the Masterclass\\n- Investigated a bug and saw it was solved by recent developments\\n- Improved the model tests by fully validating L1 transactions\\n- Enhanced the /commit API to also allow commit from scripts with inline datums (user request)\\n- Discussed off-chain governance with IOG and CF researchers\\n- Drafted a first network specification document in the context of Network resilience\\n\\n## What are the goals of next week\\n\\n- Have a clear understanding of the changes we need for the \\"Improve network resiliency\\" feature\\n- Groomed and agreed plan on incremental commits/decommits\\n- Updated tutorials including CI workflows to check consistency\\n- Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)"},{"id":"2023-09-01-ledger","metadata":{"permalink":"/cardano-updates/2023-09-01-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-ledger.md","source":"@site/blog/2023-09-01-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-09-01T00:00:00.000Z","formattedDate":"September 1, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.355,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-09-01-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-09-01-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-09-01-network"}},"content":"## High level summary\\n\\nBroadly speaking the Ledger team focused on a few main areas of Conway era:\\n\\n* Creation of voting state snapshots in order to correctly delay ratification for one epoch\\n* Validation of the Governance Actions sequencing and ordering\\n* Proper expiry of DReps and Proposal Procedures\\n* Expanding Conway Genesis functionality\\n* Utilization of some of the new Protocol Parameters in ledger validation rules\\n\\n## Low level summary\\n\\n### Conway era\\n\\n* [pull-3659] - Validate Network for ProposalProcedure and TreasuryWithdrawal\\n* [pull-3637] - Avoid using sequence of tuples, by adding GovActionId to GovActionState\\n* [pull-3651] - Inactive DReps\\n* [pull-3664] - Track proposal expiry\\n* [pull-3668] - Add min committee size predicate to NewCommittee\\n* [pull-3669] - Add Proposal deposit check against PParam\\n* [pull-3676] - Fix inactive PoolStake not counting as Drep Stake\\n* [pull-3635] - Make snapshots of GovActionsState\\n* [pull-3670] - Validate previously enacted govAction\\n* [pull-3694] - Improve error reporting on the positive coin decoder\\n* [pull-3674] - Added RATIFY thresholds\\n* [pull-3684] - Add proposal delaying, remove predicate failure from ENACT\\n* [pull-3688] - DRep Refunds and update evalTransactionBalance\\n\\n### Improvements and releasing\\n\\n* [pull-3677] - Minor patch that fixes the DRep distribution computation\\n* [pull-3686] - Post patch release fixup\\n* [pull-3695] - Changelog for cardano-node-8.3 release\\n* [pull-3683] - Add two new bench mark programs\\n\\n### Testing\\n\\n* [pull-3662] - Equality on raw types\\n\\n[pull-3659]: https://github.com/input-output-hk/cardano-ledger/pull/3659\\n[pull-3637]: https://github.com/input-output-hk/cardano-ledger/pull/3637\\n[pull-3651]: https://github.com/input-output-hk/cardano-ledger/pull/3651\\n[pull-3664]: https://github.com/input-output-hk/cardano-ledger/pull/3664\\n[pull-3668]: https://github.com/input-output-hk/cardano-ledger/pull/3668\\n[pull-3669]: https://github.com/input-output-hk/cardano-ledger/pull/3669\\n[pull-3662]: https://github.com/input-output-hk/cardano-ledger/pull/3662\\n[pull-3676]: https://github.com/input-output-hk/cardano-ledger/pull/3676\\n[pull-3677]: https://github.com/input-output-hk/cardano-ledger/pull/3677\\n[pull-3635]: https://github.com/input-output-hk/cardano-ledger/pull/3635\\n[pull-3683]: https://github.com/input-output-hk/cardano-ledger/pull/3683\\n[pull-3686]: https://github.com/input-output-hk/cardano-ledger/pull/3686\\n[pull-3670]: https://github.com/input-output-hk/cardano-ledger/pull/3670\\n[pull-3694]: https://github.com/input-output-hk/cardano-ledger/pull/3694\\n[pull-3674]: https://github.com/input-output-hk/cardano-ledger/pull/3674\\n[pull-3684]: https://github.com/input-output-hk/cardano-ledger/pull/3684\\n[pull-3695]: https://github.com/input-output-hk/cardano-ledger/pull/3695\\n[pull-3688]: https://github.com/input-output-hk/cardano-ledger/pull/3688"},{"id":"2023-09-01-network","metadata":{"permalink":"/cardano-updates/2023-09-01-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-network.md","source":"@site/blog/2023-09-01-network.md","title":"Network Team Update","description":"High-level overview of sprint 43","date":"2023-09-01T00:00:00.000Z","formattedDate":"September 1, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.765,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-09-01-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-09-01-ledger"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-01-sre"}},"content":"## High-level overview of [sprint 43][sprint-43]\\n\\nIn this sprint, we received contributions from [CF] & [Galois].  Karl Knutsson\\n([CF]) has addressed various issues regarding peer churning in P2P, timeouts\\nand our `WireShark` dissector.  While the [Galois] developers focused on\\naddressing issues from their review last year. See below for more details.\\n\\nWe continued working on bootstrap peers [ouroboros-network-#4661].\\n\\nWe refactored our test suites: they are split into `io-tests` which require to\\nbe run natively on all platforms (these tests mostly contain tests that\\nrequire `IO` system calls) and `sim-tests` which are platform independent.  We\\nrun `io-tests` on all supported platforms (e.g. `x86_64-linux`,\\n`x86-64-darwin`, `aarch64-darwin` and `x86_64-w64-mingw32` (Windows)) natively.\\nThe `sim-tests` are not executed on `Windows` due to memory limitations on\\nGitHub Actions runners. [ouroboros-network-#4653]\\n\\nWe also started rebasing `typed-protocols` refactoring branches.\\n\\nMarcin was appointed as the `cardano-node` release engineer for the `8.4.0-pre`\\nversion.  So far he integrated `cardano-ledger-conway-1.8` and\\n`ouroboros-network-0.9.1.0` to `ouroboros-consensus`, `cardano-cli` and\\n`cardano-api`.  Once we will have an integration branch for `cardano-node`,\\n`cardano-ledger-conway-1.8` and `ouroboros-consensus` packages can be released\\nto `CHaP` and PRs can be merged once they go through review & CI.\\n\\nWe also fixed some smaller issues regarding peer sharing (both were discovered\\nby Karl from [CF]). More details are included below.\\n\\n### Progress on P2P addoption\\n\\n#### SPO relays\\n\\nThere are currently ~2000 relays running P2P\\nenabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On\\n16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil\\nAda.\\n\\n![P2P relays](/images/network/2023-08-31-p2p-relays.png)\\n\\nThe following graphs show several different versions of relays running on the mainnet.  The\\ngreen line `NodeToNodeVersionV10.True` denotes P2P relays, which slowly\\nincrease over time.  The `V9` and earlier versions of the `node-to-node`\\nthe protocol indicates nodes version `1.35.x` or earlier.\\n![node versions](/images/network/2023-08-31-relay-versions.png)\\n\\nData has been kindly provided by [CF] and their mainnet monitoring\\ninfrastructure.\\n\\n#### IOG relays\\n\\nAs of this week, 90% of IOG relays are running a P2P setup. In the next sprint all\\nIOG relays will be running P2P.\\n\\n## Detailed description\\n\\nIn this sprint, we got a few contributions from [CF]:\\n* Karl made peer churning mechanism less aggressive [ouroboros-network-#4656]; and\\n* he added timeouts for idle states in `ChainSync` & `KeepAlive`\\n  miniprotocols.  These timeouts help a node remove idle connections from the\\n  responder (server) side [ouroboros-network-#4648].\\n* he improved the `WireShark` dissector by adding support for the `peer-sharing` mini-protocol [ouroboros-network-#4656].\\n\\n[Galois] has been making progress in addressing some of the issues they raised in their review (last year):\\n* Mark Tullsen ([Galois]) has been working on refactoring the main entry function of P2P [ouroboros-network-#4661] (in review);\\n* Sam Cowger ([Galois]) has been reviewing all use cases of `error` and `unsafe` calls\\n  [ouroboros-network-#4661] (in review).\\n\\n## Peer Sharing\\n\\n* Light peer sharing is only enabled when peer sharing is turned on [ouroboros-network-#4652];\\n* Handshake incorrectly reports peer sharing value.  It\'s supposed to relay the\\n  remote value, but instead, it returns the local value. [ouroboros-network-#4642] (in review).\\n\\n## Async Demotion Test Fix\\n\\n* We fixed an async demotion test failure which turned out to be a weakness of\\n  the test itself rather than a bug in the connection manager. [ouroboros-network-#4655]\\n\\n[CF]: https://cardanofoundation.org/\\n[Galois]: https://galois.com/\\n[sprint-43]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22\\n[ouroboros-network-#4615]: https://github.com/input-output-hk/ouroboros-network/issues/4615\\n[ouroboros-network-#4648]: https://github.com/input-output-hk/ouroboros-network/pull/4648\\n[ouroboros-network-#4653]: https://github.com/input-output-hk/ouroboros-network/issues/4653\\n[ouroboros-network-#4656]: https://github.com/input-output-hk/ouroboros-network/pull/4656\\n[ouroboros-network-#4657]: https://github.com/input-output-hk/ouroboros-network/pull/4657\\n[ouroboros-network-#4660]: https://github.com/input-output-hk/ouroboros-network/pull/4660\\n[ouroboros-network-#4661]: https://github.com/input-output-hk/ouroboros-network/pull/4661\\n[ouroboros-network-#4652]: https://github.com/input-output-hk/ouroboros-network/pull/4652\\n[ouroboros-network-#4642]: https://github.com/input-output-hk/ouroboros-network/issues/4642\\n[ouroboros-network-#4655]: https://github.com/input-output-hk/ouroboros-network/issues/4655"},{"id":"2023-09-01-sre","metadata":{"permalink":"/cardano-updates/2023-09-01-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-01-sre.md","source":"@site/blog/2023-09-01-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-09-01T00:00:00.000Z","formattedDate":"September 1, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":1.075,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-09-01-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-09-01-network"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-29-node-cli-api"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent updates or improvements include:\\n* Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes\\n* Work on a new [capkgs](https://github.com/input-output-hk/capkgs) repository started -- \\"Content Addressed Packages\\"\\n  * This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output\\n  * These packages don\'t have the associated IFD, long eval times and large source dependencies that the originating source repositories often do\\n  * Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers\\n\\n## Lower level summary\\n\\n### Capkgs\\n* Content addressed packages -- new repo: [capkgs](https://github.com/input-output-hk/capkgs)\\n\\n### Cardano-ops\\n* Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: [cardano-ops-compare](https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42)\\n\\n### Cardano-parts\\n* Flake devShell module improvements: [cardano-parts-pull-4](https://github.com/input-output-hk/cardano-parts/pull/4)\\n* Cardano-world entrypoints migrated to flake parts module: [cardano-parts-pull-5](https://github.com/input-output-hk/cardano-parts/pull/5)\\n* Cardano-world jobs migrated to flake parts module: [cardano-parts-pull-6](https://github.com/input-output-hk/cardano-parts/pull/6)\\n* Drep delegation fixups: [cardano-parts-pull-7](https://github.com/input-output-hk/cardano-parts/pull/7)\\n* Utilize content addressed binaries, WIP: [cardano-parts-pull-8](https://github.com/input-output-hk/cardano-parts/pull/8)\\n* Cardano-node module preparation branch, WIP: [cardano-parts-compare](https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module)\\n\\n### Cardano-perf\\n* Availability zone pinning and explorer mods: [cardano-perf-compare](https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c)\\n\\n### Cardano-world\\n* Remove performance nodes for migration to cardano-perf: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26)\\n\\n### Sanchonet-demo\\n* Sanchonet demonstration repository: [sanchonet-demo](https://github.com/input-output-hk/sanchonet-demo)"},{"id":"2023-08-29-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-08-29-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-29-node-cli-api.md","source":"@site/blog/2023-08-29-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-08-29T00:00:00.000Z","formattedDate":"August 29, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.55,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-08-29-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-09-01-sre"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-08-28-mithril"}},"content":"# 2023-08-16 - 2023-08-29\\n\\n## High level summary\\n\\nCLI is making progress towards phases 3 and 4 of SanchoNet.\\n- Ability to create info, no-confidence and new committee governance actions.\\n- Voting as DREP is possible now on the CLI\\n\\n- API is now using Ledger\'s PParams and VotingProcedures\\n- Expose following queries from consensus:\\n      - GetGovState\\n      - GetDRepState\\n      - GetDRepStakeDistr\\n      - GetCommitteeState\\n      - GetConstitution\\n\\n### cardano-cli\\n\\n- [Add goverance info action creation to era based cli](https://github.com/input-output-hk/cardano-cli/pull/179)\\n- [Add create-no-confidence command to era based cardano-cli](https://github.com/input-output-hk/cardano-cli/pull/176)\\n- [Add create-new-committee command to era based cli](https://github.com/input-output-hk/cardano-cli/pull/175)\\n- [Enable `--drep-script-hash` option](https://github.com/input-output-hk/cardano-cli/pull/204)\\n- [Remove `experimental` subcommand](https://github.com/input-output-hk/cardano-cli/pull/211)\\n- [Upgrade to `cardano-api-8.17.0.0`](https://github.com/input-output-hk/cardano-cli/pull/210)\\n- [New `governance drep id` command](https://github.com/input-output-hk/cardano-cli/pull/194)\\n- [Add `governance query` commands](https://github.com/input-output-hk/cardano-cli/pull/189)\\n- [Add `--verification-key` option to `committee key-hash` command](https://github.com/input-output-hk/cardano-cli/pull/187)\\n- [Read and write `VotingProcedures` files instead of `VotingEntry` files](https://github.com/input-output-hk/cardano-cli/pull/203)\\n- [Release 8.6.0.0](https://github.com/input-output-hk/cardano-cli/pull/201)\\n- [Merge `LegacyClientCmdError` into `CmdError` ](https://github.com/input-output-hk/cardano-cli/pull/195)\\n- [Add test for conway governance action create-constitution](https://github.com/input-output-hk/cardano-cli/pull/193)\\n- [Move legacy errors out of legacy command structure modules](https://github.com/input-output-hk/cardano-cli/pull/192)\\n- [Governance `drep` and `vote` command groups](https://github.com/input-output-hk/cardano-cli/pull/191)\\n- [Move command errors from era-based to `CmdError` module](https://github.com/input-output-hk/cardano-cli/pull/188)\\n- [Move some error types](https://github.com/input-output-hk/cardano-cli/pull/186)\\n- [Delete unused module](https://github.com/input-output-hk/cardano-cli/pull/185)\\n- [Refactor: Use `maybeFeatureInEra` instead of `featureInEra` where possible](https://github.com/input-output-hk/cardano-cli/pull/183)\\n- [Remove all uses of `toS`, `purer`, `cborError` and `intercalate` from `Cardano.Prelude`](https://github.com/input-output-hk/cardano-cli/pull/182)\\n- [Remove example era-based parsers we don\'t need anymore](https://github.com/input-output-hk/cardano-cli/pull/180)\\n- [Bump CHaP index in preparation for  8.3.0 pre](https://github.com/input-output-hk/cardano-cli/pull/174)\\n\\n\\n### cardano-api\\n\\n- [New version `cardano-api-8.17.0.0`](https://github.com/input-output-hk/cardano-api/pull/216)\\n- [Replace ProtocolParameters usage with ledger\'s PParams](https://github.com/input-output-hk/cardano-api/pull/214)\\n- [Use injective type families to improve type inference](https://github.com/input-output-hk/cardano-api/pull/210)\\n- [Delete `TxVotes` and `VotingEntry` and use `VotingProcedures` instead](https://github.com/input-output-hk/cardano-api/pull/209)\\n- [New functions `emptyVotingProcedures`, `singletonVotingProcedures` and `mergeVotingProcedures`](https://github.com/input-output-hk/cardano-api/pull/208)\\n- [New `makeStakeAddressAndDRepDelegationCertificate` function](https://github.com/input-output-hk/cardano-api/pull/207)\\n- [Expose ledger lenses for governance types](https://github.com/input-output-hk/cardano-api/pull/206)\\n- [New version cardano-api-8.16.1.0](https://github.com/input-output-hk/cardano-api/pull/205)\\n- [Add `VotingProcedures` type](https://github.com/input-output-hk/cardano-api/pull/204)\\n- [Release 8.16.0.0](https://github.com/input-output-hk/cardano-api/pull/202)\\n- [Update createAnchor to use hashAnchorData](https://github.com/input-output-hk/cardano-api/pull/200)\\n- [Release 8.15.0.0](https://github.com/input-output-hk/cardano-api/pull/197)\\n- [Add consensus governance queries](https://github.com/input-output-hk/cardano-api/pull/196)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n\\n### docs\\n\\n### CI & project maintenance"},{"id":"2023-08-28-mithril","metadata":{"permalink":"/cardano-updates/2023-08-28-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-28-mithril.md","source":"@site/blog/2023-08-28-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-08-28T00:00:00.000Z","formattedDate":"August 28, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-08-28-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-29-node-cli-api"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-25-hydra"}},"content":"## High level overview\\nThe Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of `zstandard` compression of the snapshot archive, and streaming its download and decompression in the client.\\n\\nFinally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. \\n\\n## Low level overview\\n- Completed the issue `Create explorer page with registered signers` [#1097](https://github.com/input-output-hk/mithril/issues/1097)\\n- Completed the issue `Simplify logs on the Signer/Aggregator` [#1106](https://github.com/input-output-hk/mithril/issues/1106)\\n- Completed the issue `Refactor (de)serialization of crypto entities` [#668](https://github.com/input-output-hk/mithril/issues/668)\\n- Completed the issue `Mithril client last snapshot download` [#1078](https://github.com/input-output-hk/mithril/issues/1078)\\n- Completed the issue `Use the \'/signers/registered\' route to verify if a signer is registered` [#1152](https://github.com/input-output-hk/mithril/issues/1152)\\n- Worked on the issue `Provide progress information with \'--json\' option in Client` [#1095](https://github.com/input-output-hk/mithril/issues/1095)\\n- Worked on the issue `Use \'zstandard\' compression for snapshot archives` [#876](https://github.com/input-output-hk/mithril/issues/876)\\n- Worked on the issue `Make client download and extract the archive simultaneously` [#1115](https://github.com/input-output-hk/mithril/issues/1115)"},{"id":"2023-08-25-hydra","metadata":{"permalink":"/cardano-updates/2023-08-25-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-25-hydra.md","source":"@site/blog/2023-08-25-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-08-25T00:00:00.000Z","formattedDate":"August 25, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.875,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-08-25-hydra","authors":["ffakenz"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-08-28-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-24-performance-and-tracing"}},"content":"## High-level summary\\n\\nThis week, the Hydra team conducted the monthly review meeting for Agust,which\\ncontinously ensures transparent communication and project evaluation.\\n\\nIn terms of community engagement, the Hydra team gave a Hydra master-class at\\nRareEvo workshop as an educational initiative for the community.\\nAdditionally, the team updated the Hydra demo and tutorial to include Mithril\\nand latest release changes.\\n\\nThey also focused on exploring the Hydra network resiliance in order to improve\\n`hydra-node` availability, as it becomes stuck very easily and that leads to a\\nbad user experience.\\n\\n## What did the team achieve this week\\n\\n-   Hydra master-class at RareEvo workshop!\\n-   Monthly report & review meeting\\n-   Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff\\n-   Groomed network resilience and explorer features [#188](https://github.com/input-output-hk/hydra/issues/188)\\n-   New ADR for \u201cResourced based API\u201d [#1028](https://github.com/input-output-hk/hydra/pull/1028)\\n\\n## What are the goals of next week\\n\\n-   Have a poc on network resilience working [#188](https://github.com/input-output-hk/hydra/issues/188)\\n-   Fix issue [#931](https://github.com/input-output-hk/hydra/issues/931): \u201cChain state in head state not updated on replayed observation\u201d\\n-   Fix issue [#1039](https://github.com/input-output-hk/hydra/issues/1039): \\"Close transaction dropped from cardano-node\\""},{"id":"2023-08-24-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-08-24-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-24-performance-and-tracing.md","source":"@site/blog/2023-08-24-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-08-24T00:00:00.000Z","formattedDate":"August 24, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.7,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-08-24-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-25-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-08-23-consensus"}},"content":"## High level summary\\n\\n* Benchmarking: Benchmarking node version `8.2.1` has concluded. Additionally we\'re developing benchmarking setups for GHC9.6 and UTxO-HD.\\n* Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.\\n* Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.\\n* Nomad backend: We\'re performing and analysing various runs for validation purposes on the new hardware cluster.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nWe\'ve performed and analysed the benchmarks for the `8.2.1` version of `cardano-node` as part of our release benchmarking cycle.  \\n\\nSetting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we\'re working on respective integrations on both those paths.\\n\\n### Infrastructure\\n\\nAs cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held\\nin memory, which wouldn\'t fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.\\n\\n### Tracing\\n\\nThe next portion of optimizations has been completed and merged to `master`, getting rid of Haskell\'s native `String` representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by `cardano-node`.  \\n\\nThe implementation for validation of consistent naming and configuration is ongoing. We\'re splitting out everything that\'s verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.\\n\\n### Nomad backend\\n\\nThe verification phase of the nomad cloud backend is ongoing. We\'re able to perform full runs on the new hardware cluster\\nand porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend."},{"id":"2023-08-23-consensus","metadata":{"permalink":"/cardano-updates/2023-08-23-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-23-consensus.md","source":"@site/blog/2023-08-23-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-08-23T00:00:00.000Z","formattedDate":"August 23, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.42,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-08-23-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-24-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-08-18-goedel"}},"content":"## High level summary\\n\\nOn the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.\\nOn the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.\\n\\n## UTxO-HD\\n\\n- We addressed the issues that came from the benchmarking and testing phase (see [#314](https://github.com/input-output-hk/ouroboros-consensus/issues/314)).\\n    - We fixed the operational-certificate update exception ([#305](https://github.com/input-output-hk/ouroboros-consensus/pull/305)).\\n\\n## Tech debt \\n\\n- We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see [this branch](https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api)).\\n- We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see [this branch](https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop)).\\n- We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see [#275](https://github.com/input-output-hk/ouroboros-consensus/issues/275)).\\n- We decreased the flakiness for our test suite ([#284](https://github.com/input-output-hk/ouroboros-consensus/pull/284)).\\n- We incorporated and merged the pull-request on query versioning ([#273](https://github.com/input-output-hk/ouroboros-consensus/pull/273)).\\n- We started working on new performance-based regression tests for mempool operations.\\n\\n## Support \\n\\n- [Nick Frisby](https://github.com/nfrisby) continues with his engineer responsibilities. Notably getting the Consensus release out for node `pre-release 8.3`. Nick also began integrating it into downstream branches (`cardano{-api,-cli,-node}`). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:\\n    - [#283](https://github.com/input-output-hk/ouroboros-consensus/pull/283)\\n    - [#301](https://github.com/input-output-hk/ouroboros-consensus/pull/301)\\n    - [#304](https://github.com/input-output-hk/ouroboros-consensus/pull/304)\\n\\t- [#308](https://github.com/input-output-hk/ouroboros-consensus/pull/308)"},{"id":"2023-08-18-goedel","metadata":{"permalink":"/cardano-updates/2023-08-18-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-goedel.md","source":"@site/blog/2023-08-18-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-08-18T00:00:00.000Z","formattedDate":"August 18, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.72,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-08-18-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-08-23-consensus"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-18-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is currently formalising mini protocols and also further\\ndeveloping the performance modelling prototype.\\n\\n## Details\\n\\n\\n* Development of an automated prover for showing conformance of\\n  programs to state machines (as part of the mini-protocol framework)\\n\\n* Completion of the documentation of the (current state of the)\\n  mini-protocol framework\\n\\n* Discussion about two DeltaQ lectures with two practical sessions as part\\n  of 4th year masters course on distributed systemsby colleagues at UC\\n  Louvain in the Autumn\\n\\n* Discussion about four DeltaQ lectures by colleagues at U. Bergen as part\\n  of a 5th year Masters course in the Autumn\\n\\n* Adapted original DeltaQ implementation to the new typeclasses and\\n  wrote property tests for its algebraic laws"},{"id":"2023-08-18-hydra","metadata":{"permalink":"/cardano-updates/2023-08-18-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-hydra.md","source":"@site/blog/2023-08-18-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-08-18T00:00:00.000Z","formattedDate":"August 18, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.13,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-08-18-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-08-18-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-08-18-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team released version 0.12.0, a significant update that\\nbrings support for cardano-node 8.1.2, along with performance enhancements and\\nvarious API improvements. Additionally, the team successfully onboarded a new\\ncontributor who is now actively participating in operating a Hydra Head. They\\ntook part in a meeting of the Intersect open source committee and prepared the\\nHydra master-class for RareEvo, an educational initiative for the community.\\n\\nIf you happen to be at RareEvo, register for the Hydra master-class [using this\\nform](https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true).\\nWe hope to make it possible to follow along on-line as well and will announce\\ndetails on the Hydra announcements channel on the [IOG discord\\nserver](https://discord.gg/Qq5vNTg9PT).\\n\\n## What did the team achieve this week\\n\\n-   Released version 0.12.0 which adds support for cardano-node 8.1.2, performance\\n    and several API improvements. [Release notes](https://github.com/input-output-hk/hydra/releases/tag/0.12.0)\\n-   Replaced commit via websocket with external draft + submit. [#954](https://github.com/input-output-hk/hydra/issues/954)\\n-   Onboarded new contributor to the point where he actively participates in operating a Head now.\\n-   Joined a first meeting of the Intersect open source committee\\n-   Prepared the Hydra master-class for RareEvo.\\n\\n## What are the goals of next week\\n\\n-   Monthly review meeting\\n-   Run the Hydra master-class at RareEvo!\\n-   Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff\\n-   Clear out red bin items (technical debt)\\n-   Groom network resilience and explorer features"},{"id":"2023-08-18-ledger","metadata":{"permalink":"/cardano-updates/2023-08-18-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-ledger.md","source":"@site/blog/2023-08-18-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-08-18T00:00:00.000Z","formattedDate":"August 18, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.7,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-08-18-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-18-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-08-18-network"}},"content":"## High level summary\\n\\nThe ledger team made great progress in advancing Conway era forward. In particular, voting\\nfor DRep and Stake Pool Operators is now at the state that can be used by downstream\\ncomponents. Addition of new ledger state queries makes it possible to verify changes to\\nthe governance state, such as placement of votes, submission of governance proposals,\\ninspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the\\nability to enact all of the governance actions, except for the hard fork initiation.\\n\\n\\n## Low level summary\\n\\n### Conway progress\\n\\n* [pull-3577] - Move `PParams` to `GovState`\\n* [pull-3609] - Adjust thresholds for sanchonet\\n* [pull-3604] - README: update CIP-1694 link\\n* [pull-3616] - Switch `TreasuryWithdrawals` to use `RewardAcnt`\\n* [pull-3599] - Add governance action well-formedness check\\n* [pull-3607] - Rename governance to gov\\n* [pull-3601] - Added `DRep` anchors\\n* [pull-3615] - Add optional previous `GovActionId` in some `ProposalProcedures`\\n* [pull-3596] - Upgradeable families\\n* [pull-3625] - Change constitution to use `Anchor`\\n* [pull-3592] - Added pulsing incremental computation of the DRep distribution\\n* [pull-3523] - Treasury donations\\n* [pull-3633] - Prevent state changes on phase2 failure\\n* [pull-3634] - Disable serialization of protocolVersion param update\\n* [pull-3630] - Implemented DRep refreshing\\n* [pull-3640] - Remove crypto parameterization from `AnchorData`\\n* [pull-3636] - Implement DRep ratification with an \\"always passing\\"; threshold\\n* [pull-3648] - Governance queries\\n* [pull-3650] - Change environment for `ShelleyPOOLREAP` rule\\n* [pull-3658] - Set `DRep` ratify threshold to 51%\\n* [pull-3628] - `DELEG`, `POOL`, `GOVCERT` conformance with Spec v0.8\\n\\n### Testing\\n\\n* [pull-3619] - Disabled a broken test\\n\\n### Improvements and releasing\\n\\n* [pull-3660] - Fix bounds and versions\\n* [pull-3661] - Adjust versions, bounds and CHANGELOGs to account for the latest release\\n\\n[pull-3577]: https://github.com/input-output-hk/cardano-ledger/pull/3577\\n[pull-3609]: https://github.com/input-output-hk/cardano-ledger/pull/3609\\n[pull-3604]: https://github.com/input-output-hk/cardano-ledger/pull/3604\\n[pull-3616]: https://github.com/input-output-hk/cardano-ledger/pull/3616\\n[pull-3599]: https://github.com/input-output-hk/cardano-ledger/pull/3599\\n[pull-3619]: https://github.com/input-output-hk/cardano-ledger/pull/3619\\n[pull-3607]: https://github.com/input-output-hk/cardano-ledger/pull/3607\\n[pull-3601]: https://github.com/input-output-hk/cardano-ledger/pull/3601\\n[pull-3615]: https://github.com/input-output-hk/cardano-ledger/pull/3615\\n[pull-3596]: https://github.com/input-output-hk/cardano-ledger/pull/3596\\n[pull-3625]: https://github.com/input-output-hk/cardano-ledger/pull/3625\\n[pull-3592]: https://github.com/input-output-hk/cardano-ledger/pull/3592\\n[pull-3523]: https://github.com/input-output-hk/cardano-ledger/pull/3523\\n[pull-3633]: https://github.com/input-output-hk/cardano-ledger/pull/3633\\n[pull-3634]: https://github.com/input-output-hk/cardano-ledger/pull/3634\\n[pull-3630]: https://github.com/input-output-hk/cardano-ledger/pull/3630\\n[pull-3640]: https://github.com/input-output-hk/cardano-ledger/pull/3640\\n[pull-3636]: https://github.com/input-output-hk/cardano-ledger/pull/3636\\n[pull-3648]: https://github.com/input-output-hk/cardano-ledger/pull/3648\\n[pull-3650]: https://github.com/input-output-hk/cardano-ledger/pull/3650\\n[pull-3658]: https://github.com/input-output-hk/cardano-ledger/pull/3658\\n[pull-3628]: https://github.com/input-output-hk/cardano-ledger/pull/3628\\n[pull-3660]: https://github.com/input-output-hk/cardano-ledger/pull/3660\\n[pull-3661]: https://github.com/input-output-hk/cardano-ledger/pull/3661"},{"id":"2023-08-18-network","metadata":{"permalink":"/cardano-updates/2023-08-18-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-network.md","source":"@site/blog/2023-08-18-network.md","title":"Network Team Update","description":"High-level overview of sprint 42","date":"2023-08-18T00:00:00.000Z","formattedDate":"August 18, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.09,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-08-18-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-08-18-ledger"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-08-18-sre"}},"content":"## High-level overview of [sprint 42][sprint-42]\\n\\n### Eclipse Evasion\\n\\nWe merged and released a new version of the `ouroboros-network` package (version\\n`0.9.0.0`) which includes [big ledger peers feature][ouroboros-network#3886].\\nThis is the primary peer selection mechanism to defend against eclipses.   We\\nalso prepared a PR to updated [`ouroboros-cosnensus`][ouroboros-consensus#165]\\nand [`ekg-forward`][ekg-forward#30] packages.\\n\\n### CDDL specs for protocol codecs\\n\\nWe made the `cddl` spec for network codec more inline with the implementation\\nwhich is highly polymorphic.  `cddl` doesn\'t have the notion of polymorphism,\\nbut has `any` which can generate any valid cbor term.  We matched it with an\\n`Any` type on the Haskell side and made all remaining tests & specs use it.\\nThis simplified the specifications and made it easier to understand which parts\\nare defined in the spec, and which parts are left unspecified.  See\\n[ouroboros-network#4595].\\n\\n### Ouroboros-Network-Framework API changes\\n\\nWe also released `ouroboros-network-framework` and other network components.\\nThe `ouroboros-network-framework` package contains a redesign of API exposed to\\n`ouroboros-consensus`.  We consolidated, cleaned it and made it easier to\\nextend in the future if there will be new arguments that need to be passed to\\nmini-protocol initiator and responders which comes from the low-level network\\nlayer.\\n\\n### Nix setup (CI)\\n\\nWe also made a major review of our `nix` setup.  With help from our DevX team\\nwe ended up with a clean `flake.nix` file which can:\\n\\n* compile & test the code on `x86_64-linux`, `x86_64-darwin` and `aarch64-darwin`\\n* cross-compile to `Windows` on `x86_64-linux` \\n\\nAnd provides a shell which contains all the build tools, including `ghc-9.6`,\\n`hls`, `cddl`, and more.  See [ouroboros-network#4640],\\n[ouroboros-network#4643].\\n\\n\\n## Other contributions\\n\\n### Cardano Network Service Assurance\\n\\n* The work and writeup in finishing up the CNSA, first stage (first\\n  contract).\\n* Getting Sam Cowger (Galois Inc) up to speed.\\n* The IOG Networking team carried a reivew of CNSA project progress: a limitted\\n  code & design review.\\n\\n### Galois Review\\n\\nSam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues\\n\\n* [ouroboros-network#3832],\\n* [ouroboros-network#3834],\\n* [ouroboros-network#3835],\\n* [ouroboros-network#3836];\\n\\nscoping, requirements, and getting started.\\n\\n### CI\\n\\nWe added a nightly run for GitHub actions and made the GitHub actions test be\\nexecuted with extra concurrency [ouroboros-network#4637], [ouroboros-network#4649].\\n\\nWe also added GitHub\'s dependabot [ouroboros-network#4650].\\n\\n### Bootstrap Peers\\n\\nWe settled on implementation design of bootstrap peers which is being\\nimplemented, [ouroboros-network#4615].\\n\\n\\n[sprint-42]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22\\n\\n[ekg-forward#30]: https://github.com/input-output-hk/ekg-forward/pull/30\\n\\n[ouroboros-consensus#165]: https://github.com/input-output-hk/ouroboros-consensus/pull/165\\n\\n[ouroboros-network#3832]: https://github.com/input-output-hk/ouroboros-network/issues/3832\\n[ouroboros-network#3834]: https://github.com/input-output-hk/ouroboros-network/issues/3834\\n[ouroboros-network#3835]: https://github.com/input-output-hk/ouroboros-network/issues/3835\\n[ouroboros-network#3836]: https://github.com/input-output-hk/ouroboros-network/issues/3836\\n[ouroboros-network#3886]: https://github.com/input-output-hk/ouroboros-network/issues/3886\\n[ouroboros-network#4595]: https://github.com/input-output-hk/ouroboros-network/issues/4595\\n[ouroboros-network#4615]: https://github.com/input-output-hk/ouroboros-network/issues/4615\\n[ouroboros-network#4637]: https://github.com/input-output-hk/ouroboros-network/pull/4637\\n[ouroboros-network#4640]: https://github.com/input-output-hk/ouroboros-network/pull/4640\\n[ouroboros-network#4643]: https://github.com/input-output-hk/ouroboros-network/pull/4643\\n[ouroboros-network#4649]: https://github.com/input-output-hk/ouroboros-network/pull/4649\\n[ouroboros-network#4650]: https://github.com/input-output-hk/ouroboros-network/pull/4650"},{"id":"2023-08-18-sre","metadata":{"permalink":"/cardano-updates/2023-08-18-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-18-sre.md","source":"@site/blog/2023-08-18-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-08-18T00:00:00.000Z","formattedDate":"August 18, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.66,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-08-18-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-08-18-network"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-08-17-crypto"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent updates or improvements include:\\n* Sanchonet and shelley-qa environments were updated to 8.2.1-pre.\\n* Work on two new repos utilizing [flake parts](https://flake.parts) for cardano cluster generation, automation and operation.\\n  * [cardano-parts](https://github.com/input-output-hk/cardano-parts) -- Nix flake parts for cardano clusters\\n  * [cardano-playground](https://github.com/input-output-hk/cardano-playground) -- Cardano testnet clusters\\n\\n## Lower level summary\\n\\n### Cardano-ops\\n* Cardano p2p relay and alert threshold adjustments: [cardano-ops-compare](https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe)\\n\\n### Cardano-parts\\n* New repo: [cardano-parts](https://github.com/input-output-hk/cardano-parts)\\n\\n### Cardano-perf\\n* Misc improvements to perf cluster functionality: [cardano-perf-compare](https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644)\\n\\n### Cardano-playground\\n* New repo: [cardano-playground](https://github.com/input-output-hk/cardano-playground)\\n\\n### Cardano-world\\n* Improve explorer topology generation alerting: [cardano-world-pull-109](https://github.com/input-output-hk/cardano-world/pull/109)\\n* Update p2p configs: [cardano-world-pull-110](https://github.com/input-output-hk/cardano-world/pull/110)\\n\\n### Inputs-check\\n* A flake parts module to check input closure sizes recursively for optimization considerations: [inputs-check](https://github.com/input-output-hk/inputs-check)"},{"id":"2023-08-17-crypto","metadata":{"permalink":"/cardano-updates/2023-08-17-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-crypto.md","source":"@site/blog/2023-08-17-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-08-17T00:00:00.000Z","formattedDate":"August 17, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":0.65,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-08-17-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-08-18-sre"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-08-17-db-sync"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation\\n* mithril: Full node verifier\\n* musig2: Include MuSig2 description in cryptography handbook\\n* kes_agent: Finilising test and CI. Working on KES binary\\n\\n## Low level summary\\n### Mithril\\n* Full Node Verifier merged [#939](https://github.com/input-output-hk/mithril/pull/939).\\n### MuSig2\\n* Started describing MuSig2 to include it as part of the cryptography handbook \\n### Sidechains\\n* Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in [this](https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta) fork.\\n### KES agent\\n* KES agent is ready:\\n    * CI ready [#19](https://github.com/input-output-hk/kes-agent/issues/19)\\n    * Receipt confirmation message [#20](https://github.com/input-output-hk/kes-agent/issues/20)\\n    * KES agent binary ready [#21](https://github.com/input-output-hk/kes-agent/issues/21)\\n    * Control client implemented [#11](https://github.com/input-output-hk/kes-agent/issues/11)"},{"id":"2023-08-17-db-sync","metadata":{"permalink":"/cardano-updates/2023-08-17-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-db-sync.md","source":"@site/blog/2023-08-17-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-08-17T00:00:00.000Z","formattedDate":"August 17, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.41,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-08-17-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-08-17-crypto"},"nextItem":{"title":"SECP bindings Security Issue Report","permalink":"/cardano-updates/2023-08-17-secp-issue"}},"content":"## High level summary\\nWe have integrated many new Conway feutures and allow db-sync to sync sanchonet.\\nWe also continued testing and improving the new db-sync options.\\n\\n## Lower level summary\\n- Conway integration\\n[#1484](https://github.com/input-output-hk/cardano-db-sync/pull/1484)\\n- Support for Sanchonet\\n[#1476](https://github.com/input-output-hk/cardano-db-sync/pull/1476)\\n- Stake distribution is computed earlier\\n[#1484](https://github.com/input-output-hk/cardano-db-sync/pull/1484)\\n- Deposit ledger events are now used. This reduces the db queries and makes syncing faster\\n[#1484](https://github.com/input-output-hk/cardano-db-sync/pull/1484)\\n- Testing new db-sync options\\n[#1466](https://github.com/input-output-hk/cardano-db-sync/pull/1466)\\n- Added support for ghc-9.6\\n[#1479](https://github.com/input-output-hk/cardano-db-sync/pull/1479)\\n- Tech debt: improve exceptions\\n[#1471](https://github.com/input-output-hk/cardano-db-sync/pull/1471)"},{"id":"2023-08-17-secp-issue","metadata":{"permalink":"/cardano-updates/2023-08-17-secp-issue","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-17-secp-security-issue-report.md","source":"@site/blog/2023-08-17-secp-security-issue-report.md","title":"SECP bindings Security Issue Report","description":"Security Issue Report: SECP256k1 bug","date":"2023-08-17T00:00:00.000Z","formattedDate":"August 17, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":3.3,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"SECP bindings Security Issue Report","slug":"2023-08-17-secp-issue","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-08-17-db-sync"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-15-node-cli-api"}},"content":"## Security Issue Report: SECP256k1 bug\\n\\nDate Occurred: July 15, 2022\\nSeverity:  Potentially Very High if exploited on Mainnet\\nAuthors: I\xf1igo Querejeta Azurmendi\\n\\nDate of Report: August 17, 2023\\n### Summary of Issue\\n#### Criticality Level\\nActually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet\\nContext\\n\\nNew SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.\\nHow was the Issue Detected\\n\\nThe issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.\\n\\n#### What Action was Taken\\nThe Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).\\nFixes were applied to prevent the use of the primitives.\\nA full security audit was carried out on the bindings.\\nThe rollout of the primitives was postponed to a new hard fork (Valentine)\\n\\n#### Potential Effect\\nThe potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.\\n\\n#### Actual Effect\\n* Delay to the Vasil hard-fork\\n* Temporary removal of SECP256k1 primitives\\n* Additional hard-fork to introduce SECP256k1 primitives\\n\\n#### Ongoing Mitigations Needed, if any\\nNone\\n\\n#### Responsibility for Mitigations\\nCore team\\n\\n### Detailed description of Incident\\nNew Plutus **secp256k1** cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.\\n\\nThe problem was not in the deserialization functions of the underlying library (Bitcoin\'s library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.\\n\\n* [This](https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518) is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an [expected](https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61) structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.\\n* The same happened with the Schnorr [verification function](https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170). It takes as input a SECP256k1_xonly_pubkey, which is again an [opaque structure](https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10) that holds a parsed and valid public key.\\n\\nThe FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.\\n\\nThe fix was addressed in [this](https://github.com/input-output-hk/cardano-base/pull/289) PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.\\n\\n### Recommendations\\n* Check all new Plutus bindings for correct use.\\n* Audit all new Plutus built-in bindings.\\n* Continue to develop specific End-to-End tests for all new Plutus features.\\n* Do not assume that any existing library functions are \\"safe\\". Treat all external calls circumspectly."},{"id":"2023-08-15-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-08-15-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-15-node-cli-api.md","source":"@site/blog/2023-08-15-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-08-15T00:00:00.000Z","formattedDate":"August 15, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.29,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-08-15-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"SECP bindings Security Issue Report","permalink":"/cardano-updates/2023-08-17-secp-issue"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-11-hydra"}},"content":"# 2023-08-02 - 2023-08-15\\n\\n## High level summary\\n\\n- cardano-node 8.2.1 (pre-release) to SanchoNet\\n- Continue moving CLI into era-based top level command structure\\n- Wire-up DREP key generation,\\n- Fix DREP deregistration certificates\\n- Implement Constitutional Committee Key generation on the CLI\\n- Introducing era-based protocol parameters on the API\\n- Removing depracated functions and types on the API\\n\\n\\n### cardano-cli\\n\\n- [Update to `cardano-api-8.13.0.0`](https://github.com/input-output-hk/cardano-cli/pull/169)\\n- [Reenable golden tests](https://github.com/input-output-hk/cardano-cli/pull/164)\\n- [#128 DRep key generation](https://github.com/input-output-hk/cardano-cli/pull/163)\\n- [Bump index states](https://github.com/input-output-hk/cardano-cli/pull/160)\\n- [Fix deregistration-certificate: generate deregistration instead of registration certs](https://github.com/input-output-hk/cardano-cli/pull/159)\\n- [Structuring legacy code so that era-based code does not depend on it](https://github.com/input-output-hk/cardano-cli/pull/158)\\n- [Plural for command groups](https://github.com/input-output-hk/cardano-cli/pull/151)\\n- [Implement `conway governance committee key-hash` command](https://github.com/input-output-hk/cardano-cli/pull/144)\\n- [Wire up constitution creation in the new era based cli commands](https://github.com/input-output-hk/cardano-cli/pull/142)\\n- [cardano-cli 8.5.0.0](https://github.com/input-output-hk/cardano-cli/pull/140)\\n- [Wire up remaining DReps](https://github.com/input-output-hk/cardano-cli/pull/137)\\n- [Implement `conway governance committee hot-key-gen` command](https://github.com/input-output-hk/cardano-cli/pull/136)\\n- [Convert to use `tasty-discover`](https://github.com/input-output-hk/cardano-cli/pull/127)\\n\\n### cardano-api\\n\\n- [Release cardano-api 8.13.1.0](https://github.com/input-output-hk/cardano-api/pull/189)\\n- [Fix build](https://github.com/input-output-hk/cardano-api/pull/187)\\n- [cardano-api 8.13.0.0](https://github.com/input-output-hk/cardano-api/pull/185)\\n- [Modify `queryGenesisParameters` so that its type advertises it only returns genesis parameters for the Shelley era](https://github.com/input-output-hk/cardano-api/pull/181)\\n- [Introduce EraBasedProtocolParametersUpdate](https://github.com/input-output-hk/cardano-api/pull/180)\\n- [Delete deprecated functions and types](https://github.com/input-output-hk/cardano-api/pull/173)\\n- [Simplify code with new constraints functions](https://github.com/input-output-hk/cardano-api/pull/171)\\n- [Fix `EraCast Certificate`](https://github.com/input-output-hk/cardano-api/pull/170)\\n- [New version `cardano-api-8.12.0.0`](https://github.com/input-output-hk/cardano-api/pull/168)\\n- [Fix committee hot keys](https://github.com/input-output-hk/cardano-api/pull/167)\\n- [New version `cardano-api-8.11.1.0`](https://github.com/input-output-hk/cardano-api/pull/164)\\n- [Fix typo Constitional -> Constitutional](https://github.com/input-output-hk/cardano-api/pull/163)\\n\\n\\n### cardano-node\\n\\n- [cardano-git-rev: New version for CHaP](https://github.com/input-output-hk/cardano-node/pull/5430)\\n- [Fix broken links in docs](https://github.com/input-output-hk/cardano-node/pull/5427)\\n- [cardano-node 8.2.1](https://github.com/input-output-hk/cardano-node/pull/5423)\\n\\n\\n### cardano-testnet\\n\\n- [Fix broken links in docs](https://github.com/input-output-hk/cardano-node/pull/5427)\\n- [cardano-node 8.2.1](https://github.com/input-output-hk/cardano-node/pull/5423)\\n\\n\\n### docs\\n\\n[Fix broken links in docs](https://github.com/input-output-hk/cardano-node/pull/5427)\\n\\n### CI & project maintenance\\n\\n- [Convert to use `tasty-discover`](https://github.com/input-output-hk/cardano-cli/pull/127)"},{"id":"2023-08-11-hydra","metadata":{"permalink":"/cardano-updates/2023-08-11-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-11-hydra.md","source":"@site/blog/2023-08-11-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-08-11T00:00:00.000Z","formattedDate":"August 11, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.8,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"},{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-08-11-hydra","authors":["ffakenz","ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-15-node-cli-api"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-11-performance-and-tracing"}},"content":"## High-level summary\\n\\nThis week, the Hydra team updated `hydra-node` to support `cardano-node` version\\n8.1.2, ensuring compatibility with the latest mainnet release. The team also\\nparticipated in discussions about a \\"cardanonical\\" JSON schema and added it as a\\nsubmodule to the project, contributing to improved data modeling and\\ninteroperability.\\n\\nIn terms of community engagement, the team successfully onboarded a new\\ncontributor, also participated in a RareEvo Twitter space, and continued\\npreparations for the Hydra master-class.\\n\\n## What did the team achieve this week\\n\\n-   Updated dependencies to support cardano-node 8.1.2 [#1007](https://github.com/input-output-hk/hydra/issues/1007)\\n-   Engaged in discussions about a &ldquo;cardanonical&rdquo; json schema and\\n    add it as submodule to the project\\n    [#1013](https://github.com/input-output-hk/hydra/pull/1013)\\n-   Onboarded a new contributor to the hydra project (@locallycompact)\\n-   Joined RareEvo twitter space and continued preparation of hydra master-class\\n\\n## What are the goals of next week\\n\\n-   Update & streamline tutorial to work with latest version of hydra-node\\n-   Remove the internal commit functionality [#954](https://github.com/input-output-hk/hydra/issues/954)\\n-   Release 0.12.0"},{"id":"2023-08-11-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-08-11-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-11-performance-and-tracing.md","source":"@site/blog/2023-08-11-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-08-11T00:00:00.000Z","formattedDate":"August 11, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.335,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-08-11-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-11-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-08-10-mithril"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve concluded benchmarking node version `8.2.0`.\\n* Tracing: Optimization of the new tracing system has been merged; we\'re currently working on self-documenting tracing configuration.\\n* Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nAs part of our release benchmarking cycle, we\'ve completed and analysed the runs for the `8.2.0` version of `cardano-node`. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.\\n\\n### Tracing\\n\\nA significant amount of optimizations for the new tracing system has finally been merged to `master`. At the moment,\\nwe\'re working on having a trace message self-document the final tracing configuration of a running node. Apart from adding\\ninsight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  \\n\\nFurthermore, we\'re setting up a final round of system integration level benchmarks comparing new against legacy tracing.\\n\\n### Nomad backend\\n\\nThe new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent\\nand reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were\\nable to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  \\n\\nA PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to `master`."},{"id":"2023-08-10-mithril","metadata":{"permalink":"/cardano-updates/2023-08-10-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-10-mithril.md","source":"@site/blog/2023-08-10-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-08-10T00:00:00.000Z","formattedDate":"August 10, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.7,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-08-10-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-11-performance-and-tracing"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-08-09-consensus"}},"content":"## High level overview\\nThe Mithril team completed the **Mithril protocol\u2019s mainnet beta** launch: the `release-mainnet` network is now consistently producing new certificates and snapshots! The team has released a new distribution [`2331.1`](https://github.com/input-output-hk/mithril/releases/tag/2331.1) which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the `mainnet` infrastructure.\\n\\nFinally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.\\n\\n## Low level overview\\n- Released the new distribution [`2331.1`](https://github.com/input-output-hk/mithril/releases/tag/2331.1)\\n- Completed the epic `Release \'mainnet\' Mithril network` [#918](https://github.com/input-output-hk/mithril/issues/918)\\n- Worked on the epic `Benchmark performances of Mithril Aggregator` [#904](https://github.com/input-output-hk/mithril/issues/904):\\n  - Completed the issue `Design & implement basic stress test tool for aggregator - phase 1` [#991](https://github.com/input-output-hk/mithril/issues/991)\\n- Worked on the epic `Post deployment \'mainnet\' infrastructure` [#1091](https://github.com/input-output-hk/mithril/issues/1091):\\n  - Completed the issue `Create Production Infrastructure Runbook` [#1085](https://github.com/input-output-hk/mithril/issues/1085)\\n  - Completed the issue `Ingest \'mainnet\' metrics/logs in Grafana` [#1122](https://github.com/input-output-hk/mithril/issues/1122)\\n- Worked on optimizations:\\n    - Completed the issue `Add a \'clean\' file to extracted database in client` [#1131](https://github.com/input-output-hk/mithril/issues/1131)\\n    - Worked on the issue `Create explorer page with registered signers` [#1097](https://github.com/input-output-hk/mithril/issues/1097)\\n- Worked on refactoring:\\n  - Worked on the issue `Refactor (de)serialization of crypto entities` [#668](https://github.com/input-output-hk/mithril/issues/668)\\n- Worked on bugs:\\n  - Completed the issue `Client fails to unpack some snapshot archive` [#1137](https://github.com/input-output-hk/mithril/issues/1137)\\n  - Completed the issue `The \'release-preprod\' network stopped producing certificates` [#1114](https://github.com/input-output-hk/mithril/issues/1114)\\n  - Completed the issue `The \'release-mainnet\' network does not show up in the explorer` [#1111](https://github.com/input-output-hk/mithril/issues/1111)\\n- Worked on dependencies:\\n  - Completed the issue `Upgrade Cardano node to \'8.1.2\'` [#1090](https://github.com/input-output-hk/mithril/issues/1090)\\n- Worked on troubleshooting:\\n  - Completed the issue `Signer can\'t sign with \'Invalid signature for party\' error` [#1125](https://github.com/input-output-hk/mithril/issues/1125)"},{"id":"2023-08-09-consensus","metadata":{"permalink":"/cardano-updates/2023-08-09-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-09-consensus.md","source":"@site/blog/2023-08-09-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-08-09T00:00:00.000Z","formattedDate":"August 9, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.46,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-08-09-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-08-10-mithril"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-08-04-crypto"}},"content":"## High level summary\\n\\nThis week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of `fs-sim` and `fs-api`, and released `strict-checked-vars`.\\n\\n## UTxO-HD\\n\\n- Rebased UTxO-HD on top of node 8.2 ([issue](https://github.com/input-output-hk/ouroboros-consensus/issues/256))\\n- Address new `Maybe` translations for UTxOs in Conway 1.6. ([PR](https://github.com/input-output-hk/ouroboros-consensus/pull/261)).\\n- Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.\\n- [Fixed](https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd) an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.\\n- Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running `QueryUTxOByAddress` ([PR](https://github.com/input-output-hk/ouroboros-consensus/pull/273)).\\n- Measured the speed of `QueryUTxOByAddress` under different `queryBatchSize` values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.\\n- Refactored and implemented ledgertable-related classes for the general `HardforkBlock`.\\n\\n## Genesis\\n\\n- [Frisby](https://github.com/nfrisby) and [Esgen](https://github.com/amesgen) continue to engage with the Researchers on grinding against the Genesis design.\\n\\n## Fostering collaboration\\n\\n- Drafted a document explaining versioning of local state queries [#273](https://github.com/input-output-hk/ouroboros-consensus/pull/273).\\n\\n## Support\\n\\n- [Frisby](https://github.com/nfrisby) is the release engineer this cycle.\\n- Successfully created work-in-progress `ouroboros-consensus` and `cardano-api` commits that integrate the 2023 Aug 7 tip of `cardano-ledger`. This will require a release of `ouroboros-consensus`, which hasn\'t happened yet."},{"id":"2023-08-04-crypto","metadata":{"permalink":"/cardano-updates/2023-08-04-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-crypto.md","source":"@site/blog/2023-08-04-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":0.495,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-08-04-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-08-09-consensus"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-08-04-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation\\n* mithril: Full node verifier\\n* musig2: Finalised the missing fuzz tests\\n* kes_agent: engineer on PTO. Work halted \\n\\n## Low level summary\\n### Mithril\\n* Work on a mithril flaky test [#1105](https://github.com/input-output-hk/mithril/pull/1105)\\n* Keep working on Full Node Verifier [#939](https://github.com/input-output-hk/mithril/pull/939).\\n  Should be merged in the coming week.\\n### MuSig2\\n* Finalised the fuzz tests [#43](https://github.com/input-output-hk/musig2/pull/43)\\n### Sidechains\\n* Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier."},{"id":"2023-08-04-goedel","metadata":{"permalink":"/cardano-updates/2023-08-04-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-goedel.md","source":"@site/blog/2023-08-04-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.43,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-08-04-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-08-04-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-04-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is formalising mini protocols and also further developing the\\nperformance modelling prototype.\\n\\n## Details\\n\\n* Developing new framework for specification and verification of\\n  mini-protocols which is closer to the Haskell implementation.\\n\\n* Developed a new internal representation for the DeltaQ algebra that\\n  allows for more modularity in backend implementations\\n\\n* Discussions regarding the Cardano networking specification"},{"id":"2023-08-04-hydra","metadata":{"permalink":"/cardano-updates/2023-08-04-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-hydra.md","source":"@site/blog/2023-08-04-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.06,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-08-04-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-08-04-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-08-04-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team achieved notable progress in various aspects of the\\nproject. The team updated the use case section for auctions on the [/unstable](https://hydra.family/head-protocol/unstable/use-cases/)\\nbranch of the website, improving the understanding of Hydra&rsquo;s applicability.\\n\\nFrom the development side, the team successfully completed event-sourced\\npersistence, a key enhancement in the project&rsquo;s architecture which improves\\noff-chain transaction processing performance. They also added a\\n&ldquo;submit-transaction&rdquo; endpoint to the API.\\n\\nIn addition to project-related progress, the team actively engaged in community\\nreviews for several catalyst proposals related to Hydra and Mithril,\\ncontributing to the wider Cardano ecosystem.\\n\\nFinally, the full report for the month of July was also published [here](https://hydra.family/head-protocol/monthly/2023-07).\\n\\n## What did the team achieve this week\\n\\n-   Published the [monthly report for July](https://hydra.family/head-protocol/monthly/2023-07)\\n-   Updated the use case section for auctions (published on [/unstable](https://hydra.family/head-protocol/unstable/use-cases/) branch)\\n-   Completed event sourced persistence [#913](https://github.com/input-output-hk/hydra/issues/913)\\n-   Added a &ldquo;submit-transaction&rdquo; endpoint to the API [#966](https://github.com/input-output-hk/hydra/issues/966)\\n-   Community reviews for several catalyst proposals related to Hydra and Mithril\\n-   Created a network testing tool (hydra-net) [#1006](https://github.com/input-output-hk/hydra/pull/1006)\\n\\n## What are the goals of next week\\n\\n-   Update hydra-node to work with cardano-node version 8.x\\n-   Remove the internal commit functionality\\n-   Release version 0.12.0\\n-   Update & streamline tutorial to work with latest version of hydra-node"},{"id":"2023-08-04-ledger","metadata":{"permalink":"/cardano-updates/2023-08-04-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-ledger.md","source":"@site/blog/2023-08-04-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.915,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-08-04-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-08-04-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-08-04-network"}},"content":"## High level summary\\n\\nThe ledger team was working almost exclusively on the Conway era implementation. In\\nparticular, the main focus was directed towards solidifying transaction related types and\\ntheir binary representation. We also directed some effort into unblocking Plutus team with\\nrespect to PlutusV3 integration.\\n\\n## Low level summary\\n\\n### Conway progress\\n\\n* [pull-3552] - Allow Constitutional Committee Hot Key to be ScriptHash\\n* [pull-3581] - Make Constitutional Committee Cold Key to be ScriptHash\\n* [pull-3571] - Implement a portion of the TICKF rule.\\n* [pull-3556] - Add Script to Constitution\\n* [pull-3576] - Add optional Anchor to ConwayRegDRep certificate\\n* [pull-3495] - Implement refund logic for Proposal deposits\\n* [pull-3579] - Change voting procedure in the transaction to a nested Map\\n* [pull-3585] - Rename `CommitteeCert` into a `GovCert`\\n* [pull-3587] - Remove `DelegStakeTxCert` from the `COMPLETE` pragma for `TxCert`\\n* [pull-3586] - Add `CurrentTreasuryValue` to `TxBody`\\n* [pull-3588] - Rename key roles\\n* [pull-3557] - Update `NewCommittee` action to use `RewardAcnt` and add more info\\n* [pull-3595] - Add `ConwayUpdateDRep` constructor to ConwayTxCertGov type\\n* [pull-3600] - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway\\n* [pull-3597] - Update `ProposalProcedure` return address to be a `RewardAcnt`\\n\\n### Testing\\n\\n* [pull-3374] - New features for generation subject to constraints\\n* [pull-3519] - Basic Conway features test\\n\\n### Bugfixes\\n\\n* [pull-3566] - Mint field translation bugfix.\\n\\n### Plutus integration\\n\\n* [issue-3538] - A fairly complete specification was created for the PlutusV3 context\\n* [pull-3593] - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality\\n\\n### Improvements and releasing\\n\\n* [pull-3574] - Improve clarity and performance of collateral Non-ADA validation:\\n* [pull-3573] - Update top-level `CHANGELOG.md` with cardano-node relevant changes\\n* [pull-3555] - Bump pygments from 2.12.0 to 2.15.0 in /doc\\n* [pull-3575] - Bump certifi from 2022.12.7 to 2023.7.22 in /doc\\n* [pull-3567] - Backport mint field translation bugfix\\n* [pull-3568] - Fixed typo in byron ledger spec\\n* [pull-3572] - Release/backport tickf bugfix\\n\\n\\n\\n[issue-3538]: https://github.com/input-output-hk/cardano-ledger/issues/3538\\n[pull-3555]: https://github.com/input-output-hk/cardano-ledger/pull/3555\\n[pull-3566]: https://github.com/input-output-hk/cardano-ledger/pull/3566\\n[pull-3567]: https://github.com/input-output-hk/cardano-ledger/pull/3567\\n[pull-3568]: https://github.com/input-output-hk/cardano-ledger/pull/3568\\n[pull-3572]: https://github.com/input-output-hk/cardano-ledger/pull/3572\\n[pull-3552]: https://github.com/input-output-hk/cardano-ledger/pull/3552\\n[pull-3571]: https://github.com/input-output-hk/cardano-ledger/pull/3571\\n[pull-3575]: https://github.com/input-output-hk/cardano-ledger/pull/3575\\n[pull-3573]: https://github.com/input-output-hk/cardano-ledger/pull/3573\\n[pull-3556]: https://github.com/input-output-hk/cardano-ledger/pull/3556\\n[pull-3574]: https://github.com/input-output-hk/cardano-ledger/pull/3574\\n[pull-3576]: https://github.com/input-output-hk/cardano-ledger/pull/3576\\n[pull-3581]: https://github.com/input-output-hk/cardano-ledger/pull/3581\\n[pull-3495]: https://github.com/input-output-hk/cardano-ledger/pull/3495\\n[pull-3579]: https://github.com/input-output-hk/cardano-ledger/pull/3579\\n[pull-3585]: https://github.com/input-output-hk/cardano-ledger/pull/3585\\n[pull-3587]: https://github.com/input-output-hk/cardano-ledger/pull/3587\\n[pull-3586]: https://github.com/input-output-hk/cardano-ledger/pull/3586\\n[pull-3588]: https://github.com/input-output-hk/cardano-ledger/pull/3588\\n[pull-3557]: https://github.com/input-output-hk/cardano-ledger/pull/3557\\n[pull-3593]: https://github.com/input-output-hk/cardano-ledger/pull/3593\\n[pull-3595]: https://github.com/input-output-hk/cardano-ledger/pull/3595\\n[pull-3374]: https://github.com/input-output-hk/cardano-ledger/pull/3374\\n[pull-3600]: https://github.com/input-output-hk/cardano-ledger/pull/3600\\n[pull-3597]: https://github.com/input-output-hk/cardano-ledger/pull/3597\\n[pull-3519]: https://github.com/input-output-hk/cardano-ledger/pull/3519"},{"id":"2023-08-04-network","metadata":{"permalink":"/cardano-updates/2023-08-04-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-network.md","source":"@site/blog/2023-08-04-network.md","title":"Network Team Update","description":"High-level overview of sprint 41","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.515,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-08-04-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-08-04-ledger"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-04-performance-and-tracing"}},"content":"## High-level overview of [sprint 41][sprint-41]\\n_24th July - 6th August 2023_\\n\\nWe started the implementation of __bootstrap peers__.  Bootstrap peers are designed\\nto provide a safety guarantee for nodes joining the network while still taking\\nadvantage of the distributed network for nodes that are synced.  This will be\\nan intermediate step before Genesis which will allow for further distribute the\\nsystem.  The bootstrap peers will be run by some trusted partners like CF,\\nEmurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node\\nwallets), which often end up syncing and require access to the honest chain. See\\n[ouroboros-network#4615] for a more detailed implementation plan.\\n\\n## Other contributions\\n\\nWe started to use `nothunks` library to discover if we have any unevaluated\\nthunks which can lead to memory leaks [ouroboros-network#4633].  We found\\na small one in the peer metric component of the P2P networking stack.  Fixing\\nit put us on a small detour of fixing the API of the [`strict-checked-vars`]\\npackage: [cardano-base#431], [cardano-base#432], as well as adding `NFData`\\ninstance to [`io-classes`][io-classes#110].  We also improved `nothunks`\\nlibrary to make debugging easier and we provided a `NoThunks` instance for\\n`ThreadId` which we will need in the future (see [nothunks#33]).\\n\\nWe released a new version of `io-classes` (version `1.2.0.0`) and related\\npackages to [Hackage][io-classes-1.2.0.0].\\n\\nWe addressed all review comments on the eclipse evasion PR which introduces big\\nledger peers, [ouroboros-network#3886].\\n\\nWe fixed how `SIGHUP` signal handlers are registered, so it\'s not possible to\\nshutdown a node which was starting while trying to update network topology,\\nsee [cardano-node#5421].\\n\\nI didn\'t mention that in the previous update, so here it goes: in the previous\\nsprint we released [`ouroboros-network-0.8.2.0`] and\\n[`ouroboros-network-framework-0.7.0.0`].\\n\\n[sprint-41]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22\\n\\n[`strict-checked-vars`]: https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars\\n[cardano-base#431]: https://github.com/input-output-hk/cardano-base/pulls/431\\n[cardano-base#432]: https://github.com/input-output-hk/cardano-base/pulls/432\\n[cardano-node#5421]: https://github.com/input-output-hk/cardano-node/pull/5421\\n[ouroboros-network#3886]: https://github.com/input-output-hk/ouroboros-network/issues/3886\\n[ouroboros-network#4615]: https://github.com/input-output-hk/ouroboros-network/issues/4615\\n[ouroboros-network#4633]: https://github.com/input-output-hk/ouroboros-network/issues/4633\\n[`ouroboros-network-0.8.2.0`]: https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md\\n[`ouroboros-network-framework-0.7.0.0`]: https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md\\n[io-classes#110]: https://github.com/input-output-hk/io-sim/pull/110\\n[io-classes-1.2.0.0]: https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0\\n[nothunks#33]: https://github.com/input-output-hk/nothunks/pull/33"},{"id":"2023-08-04-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-08-04-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-performance-and-tracing.md","source":"@site/blog/2023-08-04-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.76,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-08-04-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-08-04-network"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-08-04-sre"}},"content":"## High level summary\\n\\n* Benchmarking: We\'re adjusting the benchmarking cluster to handle runs for node version `8.2.0`.\\n* Tracing: We\'ve finished optimization of the new tracing system and added extra robustness with regard to namespacing.\\n* Infrastructure: We\'ve been working on making all benchmarking code compliant with the latest GHC9.6.\\n* Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we\'ve successfully performed various benchmarking runs on it.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nThe `8.2.0` version of `cardano-node` required adjustment of some of the sanity checks that are part of our benchmarking\\ncluster automation. We\'ve pinpointed the necessary changes and are currently setting up the cluster for the new node version.\\n\\n### Tracing\\n\\nThe optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint\\nwhen using it as default for a running node.  \\n\\nA linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any\\ninconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.\\nThis feature adds another layer of robustness to the whole system.\\n\\n### Infrastructure\\n\\nA potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler\\nversions. We\'ve future-proofed our benchmarking code.\\n\\n### Nomad backend\\n\\nThe hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend\\naccordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  \\n\\nThe validation phase is ongoing. We were able to perform successful runs and analyses for various `8.x` node versions, including `8.2.0-pre`. With parallel runs on the current cluster, we hope to measure the same effects we\'ve observed with the\\nnomad backend - which will be a big step towards production use."},{"id":"2023-08-04-sre","metadata":{"permalink":"/cardano-updates/2023-08-04-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-04-sre.md","source":"@site/blog/2023-08-04-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-08-04T00:00:00.000Z","formattedDate":"August 4, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.64,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-08-04-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-08-04-performance-and-tracing"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-01-node-cli-api"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent updates or improvements include:\\n* Preprod and preview envionments were updated to 8.1.2.\\n* Sanchonet and shelley-qa environments were updated to 8.2.0-pre.\\n* Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.\\n\\n## Lower level summary\\n\\n### Cardano-ops\\n* Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: [cardano-ops-pull-416](https://github.com/input-output-hk/cardano-ops/pull/416)\\n\\n### Cardano-perf\\n* New repo: [cardano-perf-repo](https://github.com/input-output-hk/cardano-perf)\\n\\n### Cardano-world\\n* Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: [cardano-world-pull-104](https://github.com/input-output-hk/cardano-world/pull/104)\\n* Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: [cardano-world-pull-105](https://github.com/input-output-hk/cardano-world/pull/105)\\n* Add nomad dbSync fix for iohkNix env update: [cardano-world-pull-106](https://github.com/input-output-hk/cardano-world/pull/106)"},{"id":"2023-08-01-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-08-01-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-08-01-node-cli-api.md","source":"@site/blog/2023-08-01-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-08-01T00:00:00.000Z","formattedDate":"August 1, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.76,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-08-01-node-cli-api","tags":["cli-api"],"authors":"carlos","hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-08-04-sre"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-07-31-network"}},"content":"# 2023-07-19 - 2023-08-01\\n\\n## High level summary\\n\\n- Release of Node 8.2.0\\n    - Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.\\n    - This release is phase 1 of the SanchoNet roll out\\n    - Allows SPOs to vote on changes to the on-chain constitution.\\n    - Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.\\n    - Updates to the networking packages prepare the road for peer sharing.\\n- cardano-cli and cardano-api continue to integrate Conway era features\\n- Continue refactoring of cardano-testnet\\n\\n### cardano-cli\\n\\n- [Use AnyShelleyToBabbageEra from cardano-api instead](https://github.com/input-output-hk/cardano-cli/pull/116)\\n- [Update to `cardano-api-8.10.2.0`](https://github.com/input-output-hk/cardano-cli/pull/115)\\n- [Add rendering for `ConwayCertificate` in `Cardano.Cli.Json.Friendly`](https://github.com/input-output-hk/cardano-cli/pull/113)\\n- [Update to `cardano-api-8.10.1.0`](https://github.com/input-output-hk/cardano-cli/pull/111)\\n- [Add DRep registration certificate command](https://github.com/input-output-hk/cardano-cli/pull/110)\\n- [Add options to delegate voting stake ](https://github.com/input-output-hk/cardano-cli/pull/109)\\n- [Share MIR certificates code between era-based and legacy CLI parsers](https://github.com/input-output-hk/cardano-cli/pull/107)\\n- [Release cardano-cli 8.4.0.0](https://github.com/input-output-hk/cardano-cli/pull/106)\\n- [Update to`cardano-api-8.10.0.0`](https://github.com/input-output-hk/cardano-cli/pull/103)\\n- [Change directory structure from Options/.. to EraBased/..](https://github.com/input-output-hk/cardano-cli/pull/100)\\n- [Era-sensitive command structure](https://github.com/input-output-hk/cardano-cli/pull/98)\\n- [#86 Set default era to Babbage in stake-address, stake-pool and governance commmands](https://github.com/input-output-hk/cardano-cli/pull/90)\\n\\n\\n### cardano-api\\n\\n\\n- [Deprecate `shelleyCertificateConstraints` and `conwayCertificateConstraints`](https://github.com/input-output-hk/cardano-api/pull/155)\\n- [Deprecate `TxVotesSupportedInEra`](https://github.com/input-output-hk/cardano-api/pull/154)\\n- [Add SerialiseAsBech32 instances for committee cold and hot keys](https://github.com/input-output-hk/cardano-api/pull/152)\\n- [Deprecate some constraint functions](https://github.com/input-output-hk/cardano-api/pull/151)\\n- [Deprecate `TxGovernanceActionSupportedInEra`](https://github.com/input-output-hk/cardano-api/pull/150)\\n- [More `shelleyBasedEraConstraint` constraints](https://github.com/input-output-hk/cardano-api/pull/149)\\n- [New version `cardano-api-8.10.2.0`](https://github.com/input-output-hk/cardano-api/pull/148)\\n- [Expose shelleyCertificateConstraints and conwayCertificateConstraints](https://github.com/input-output-hk/cardano-api/pull/147)\\n- [Remove unnecessary function `getShelleyEraTxBodyConstraint`](https://github.com/input-output-hk/cardano-api/pull/146)\\n- [Provide additional constraints in `shelleyBasedEraConstraints`](https://github.com/input-output-hk/cardano-api/pull/143)\\n- [Update changelogs for `cardano-api-8.10.1.0`](https://github.com/input-output-hk/cardano-api/pull/142)\\n- [handleFileForWritingWithOwnerPermissionImpl: Fix permisions](https://github.com/input-output-hk/cardano-api/pull/141)\\n- [Update DRepKey with correct `Voting` keyrole](https://github.com/input-output-hk/cardano-api/pull/138)\\n- [Support more constraints for Conway witnesses](https://github.com/input-output-hk/cardano-api/pull/137)\\n- [New version `cardano-api-8.10.0.0`](https://github.com/input-output-hk/cardano-api/pull/135)\\n- [Expose toShelleyPoolParams for conway integration](https://github.com/input-output-hk/cardano-api/pull/134)\\n- [`FeatureInEra` instance for `ShelleyBasedEra`](https://github.com/input-output-hk/cardano-api/pull/131)\\n- [Expose more functionality from cardano-api](https://github.com/input-output-hk/cardano-api/pull/130)\\n- [Improved feature ergonomics](https://github.com/input-output-hk/cardano-api/pull/128)\\n- [Rename `AtMostBabbageEra` to `ShelleyToBabbageEra`](https://github.com/input-output-hk/cardano-api/pull/127)\\n\\n\\n### cardano-node\\n\\n- [Fix stubbed LogFormatting instances](https://github.com/input-output-hk/cardano-node/pull/5412)\\n- [8.2.0 version bumps](https://github.com/input-output-hk/cardano-node/pull/5411)\\n- [Bump network packages version](https://github.com/input-output-hk/cardano-node/pull/5409)\\n- [Fix missing `ToObject` tracing instances.](https://github.com/input-output-hk/cardano-node/pull/5404)\\n- [input-output-hk/cardano-cli#85 Fix node crashing in babbage](https://github.com/input-output-hk/cardano-node/pull/5401)\\n\\n\\n### cardano-testnet\\n\\n- [8.2.0 version bumps](https://github.com/input-output-hk/cardano-node/pull/5411)\\n- [Bump network packages version](https://github.com/input-output-hk/cardano-node/pull/5409)\\n- [Fix missing `ToObject` tracing instances.](https://github.com/input-output-hk/cardano-node/pull/5404)\\n- [Fix plutus script costing in cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/5400)\\n\\n### docs\\n\\n- [Bump network packages version](https://github.com/input-output-hk/cardano-node/pull/5409)\\n    - [WarmValency](https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42)\\n\\n### CI & project maintenance"},{"id":"2023-07-31-network","metadata":{"permalink":"/cardano-updates/2023-07-31-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-31-network.md","source":"@site/blog/2023-07-31-network.md","title":"Network Team Update","description":"Network Update (Sprints 39 & 40)","date":"2023-07-31T00:00:00.000Z","formattedDate":"July 31, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.18,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-07-31-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-08-01-node-cli-api"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-28-hydra"}},"content":"## Network Update (Sprints 39 & 40)\\n\\nThe network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.\\nIt was great to see and talk to so many of the community members.\\n\\n### Sprint 39 (Jun 26 - Jul 09)\\n\\n#### Major changes\\n\\nNow the following __list of traces will be turned on by default__:\\n\\n##### `node-to-client` protocol\\n\\n- `LocalConnectionManagerTracer` \\n- `LocalInboundGovernor`\\n- `LocalHandshake`\\n- `LocalServer`\\n\\n##### `node-to-node` protocol\\n\\n- `Server`\\n\\nSee [cardano-node#5353].  This will be released in `node-8.2.0`.\\n\\n\\nWe made sure that `cardano-client-0.1.0.x` library (which is `db-sync`) is not using the experimental `node-to-client` protocol.\\nThe `cardano-client-0.2.0.0` was not affected.\\nSee [ouroboros-network#4612].\\n\\nWe merged the __dynamic block production feature__ to `ouroboros-consensus` (also available in the `cardano-node-8.2.0` release).\\nDynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.\\nSee [ouroboros-network#3159], [ouroboros-consensu#140].\\n\\nWe continued to review the implementation of big ledger peers for eclipse evasion, see [ouroboros-network#4462].\\n\\n#### Minor changes\\n\\n- We refactored the top level `cardano-node` error handler: [cardano-node#5356]\\n\\n\\n### Sprint 40 (Jul 09 - Jul 23)\\n\\n#### Major changes\\n\\nWe integrated `ouroboros-network-0.8.2.0` with the `master` branch of `cardano-node` for the `8.2.0` release (the version match between `ouroboros-network` and `cardano-node` is purely accidental).\\nThis includes:\\n\\n* integration with __dynamic block production__ feature.\\n  This feature is documented in the [following PR][cardano-node#5399].\\n* __Warm valency__ for local root peers (see below).\\n\\nFor the full list of features included in the `8.2.0` release from the network side, please take a look at the [pre-release nodes][cardano-node-8.2.0-pre].\\n\\n\\nWe __improved the memory footprint__ of peer metrics measured by the P2P stack.\\nPeer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).\\nSee [ouroboros-network#4620].\\nThe improvement will be available in `cardano-node-8.2.0`.\\n\\nWe added an __optional explicit warm valency__ to local root peers of the __P2P topology file__.\\nPreviously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.\\nThe hot valency (previously known simply as valency) hasn\'t changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.\\nWarm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.\\nSee [ouroboros-network#4575], [cardano-node#5409].\\n\\n[cardano-node#5353]: https://github.com/input-output-hk/cardano-node/pull/5353\\n[cardano-node#5356]: https://github.com/input-output-hk/cardano-node/pull/5356\\n[cardano-node#5399]: https://github.com/input-output-hk/cardano-node/pull/5399\\n[cardano-node#5409]: https://github.com/input-output-hk/cardano-node/pull/5409\\n[cardano-node-8.2.0-pre]: https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre\\n[ouroboros-network#4575]: https://github.com/input-output-hk/ouroboros-network/pull/4575\\n[ouroboros-network#4612]: https://github.com/input-output-hk/ouroboros-network/pull/4612\\n[ouroboros-network#4620]: https://github.com/input-output-hk/ouroboros-network/pull/4620\\n[ouroboros-network#3159]: https://github.com/input-output-hk/ouroboros-network/issues/3159\\n[ouroboros-network#4462]: https://github.com/input-output-hk/ouroboros-network/pull/4462\\n[ouroboros-consensus#140]: https://github.com/input-output-hk/ouroboros-consensus/pull/140\\n\\n[sprint-39]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22Sprint+39%22\\n[sprint-40]: https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22Sprint+40%22"},{"id":"2023-07-28-hydra","metadata":{"permalink":"/cardano-updates/2023-07-28-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-28-hydra.md","source":"@site/blog/2023-07-28-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-07-28T00:00:00.000Z","formattedDate":"July 28, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.005,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-07-28-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-07-31-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-07-27-mithril"}},"content":"## High-level summary\\n\\nDuring this week, the Hydra team achieved significant progress in various areas.\\nThey conducted the monthly review meeting for July, which continously ensures\\ntransparent communication and project evaluation. The team migrated the core\\nlogic of the node to an event-sourced architecture and incremental writes of\\nevents to persistence, enhancing the project&rsquo;s performance and maintainability.\\nFurthermore, the team added the ability to read protocol parameters via the API\\nand fixed the CI workflows to support pull requests from forks of external\\ncontributors, streamlining the development process for community involvement.\\n\\n## What did the team achieve this week\\n\\n-   Held the monthly review meeting for July ([recording](https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/))\\n-   Migrate the core logic of the node to an event-sourced architecture [#999](https://github.com/input-output-hk/hydra/pull/999)\\n-   Updated persistence to faster incremental writes of events [#1000](https://github.com/input-output-hk/hydra/pull/1000)\\n-   Added ability to read protocol parameters via API [#735](https://github.com/input-output-hk/hydra/issues/735)\\n-   Fix CI workflows to support pull requests from forks of external contributors [#993](https://github.com/input-output-hk/hydra/pull/993)\\n-   Updated to GHC 9.2.8 [#1005](https://github.com/input-output-hk/hydra/pull/1005)\\n-   Prepared an updated use cases section on <https://hydra.family> (published with next release)\\n\\n## What are the goals of next week\\n\\n-   Publish monthly report\\n-   Complete user transaction submission work [#966](https://github.com/input-output-hk/hydra/issues/966)\\n-   Remove commit from internal wallet (deprecated) [#954](https://github.com/input-output-hk/hydra/issues/954)"},{"id":"2023-07-27-mithril","metadata":{"permalink":"/cardano-updates/2023-07-27-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-27-mithril.md","source":"@site/blog/2023-07-27-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-07-27T00:00:00.000Z","formattedDate":"July 27, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.715,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-07-27-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-28-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-07-26-consensus"}},"content":"## High level overview\\nThe Mithril team launched **Mithril protocol\u2019s mainnet beta**: the `release-mainnet` network is now open for signer registrations, and its genesis certificate has been created. The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. \\n\\nThey have released a new distribution [`2329.0`](https://github.com/input-output-hk/mithril/releases/tag/2329.0), which is running on the `release-mainnet` network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.\\n\\nFinally, they have worked on enhancing the documentation for [onboarding SPOs](https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide) and setting up a [Mithril signer](https://mithril.network/doc/manual/getting-started/run-signer-node), and fixing installation bugs of the binary artifacts produced in the CI.\\n\\n\\n## Low level overview\\n- Created the dev blog post [Mithril Protocol\u2019s Mainnet Beta Launch](https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch)\\n- Released the new distribution [`2329.0`](https://github.com/input-output-hk/mithril/releases/tag/2329.0)\\n- Closed the epic that prepares the Mithril infrastructure for `mainnet` [#767](https://github.com/input-output-hk/mithril/issues/767):\\n  - Completed the issue `Deploy \'mainnet\' infrastructure` [#988](https://github.com/input-output-hk/mithril/issues/988)\\n  - Completed the issue `Handle Secrets management` [#989](https://github.com/input-output-hk/mithril/issues/989)\\n- Worked on the epic `Release \'mainnet\' Mithril network` [#918](https://github.com/input-output-hk/mithril/issues/918)\\n  - Completed the issue `Prepare SPO on-boarding guide` [#1049](https://github.com/input-output-hk/mithril/issues/1049)\\n- Worked on the epic `Benchmark performances of Mithril Aggregator` [#904](https://github.com/input-output-hk/mithril/issues/904):\\n  - Worked on the issue `Design & implement basic stress test tool for aggregator` [#991](https://github.com/input-output-hk/mithril/issues/991)\\n- Worked on optimizations:\\n  - Completed the issue `Enhance the configuration of Mithril relay` [#1080](https://github.com/input-output-hk/mithril/issues/1080)\\n  - Completed the issue `Remove legacy store adapters from aggregator` [#1053](https://github.com/input-output-hk/mithril/issues/1053)\\n  - Completed the issue `Add a \'sign\' sub-command to \'genesis\' command in aggregator` [#1081](https://github.com/input-output-hk/mithril/issues/1081)\\n- Worked on refactoring:\\n  - Worked on the issue `Refactor (de)serialization of crypto entities` [#668](https://github.com/input-output-hk/mithril/issues/668)\\n- Worked on documentation:\\n  - Completed the issue `Enhance \'Run a Mithril Signer node (SPO)\' guide` [#1055](https://github.com/input-output-hk/mithril/issues/1055)\\n- Worked on bugs:\\n  - Completed the issue `Shared library error in CI binaries` [#1073](https://github.com/input-output-hk/mithril/issues/1073)\\n  - Completed the issue `Debian package does not install cleanly on older ubuntu versions` [#834](https://github.com/input-output-hk/mithril/issues/834)\\n  - Completed the issue `Aggregator panics with new (de)serialization of \'ProtocolVerificationKey\'` [#1083](https://github.com/input-output-hk/mithril/issues/1083)"},{"id":"2023-07-26-consensus","metadata":{"permalink":"/cardano-updates/2023-07-26-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-26-consensus.md","source":"@site/blog/2023-07-26-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-07-26T00:00:00.000Z","formattedDate":"July 26, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.85,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-07-26-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-07-27-mithril"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-21-hydra"}},"content":"## High level summary\\n\\nThe `db-sync` team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.\\nWe also focused on completing tracing support for UTxO-HD in `cardano-node`.\\nCurrently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. \\n\\nThe team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the `ChainSync` client as part of the onboarding efforts for the team that will implement Genesis.\\n\\nThe Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.\\n\\n### Genesis liaising\\n\\nImprovements to the `ChainSync` client:\\n\\n- [#222](https://github.com/input-output-hk/ouroboros-consensus/pull/222).\\n- [#233](https://github.com/input-output-hk/ouroboros-consensus/pull/233)."},{"id":"2023-07-21-hydra","metadata":{"permalink":"/cardano-updates/2023-07-21-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-hydra.md","source":"@site/blog/2023-07-21-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-07-21T00:00:00.000Z","formattedDate":"July 21, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.7,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-07-21-hydra","authors":["ch1bo"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-07-26-consensus"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-07-21-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team updated the specification to align with recent\\noff-chain protocol changes, completed refactoring the snapshot emission\\nin preparation for event-sourced protocol logic, and updated to GHC\\n9.2.7, resulting in improved compile times and slightly smaller Plutus\\nscripts.\\n\\n## What did the team achieve this week\\n\\n-   Updated the specification to match the recent off-chain protocol\\n    changes to complete\\n    [#728](https://github.com/input-output-hk/hydra/pull/728)\\n-   Refactored the snapshot emission logic in preparation for event\\n    sourced protocol logic.\\n-   Updated to GHC 9.2.7, which led to improved compile times and\\n    slightly smaller plutus scripts.\\n\\n## What are the goals of next week\\n\\n-   Monthly review meeting next wednesday and July report\\n-   Reflect latest information onto our roadmap.\\n-   Actual implemention of event-sourced persistence\\n    [#913](https://github.com/input-output-hk/hydra/pull/913).\\n-   Update the use cases section on <https://hydra.family>\\n-   Remove deprecated internal commit\\n    [#954](https://github.com/input-output-hk/hydra/pull/954)."},{"id":"2023-07-21-ledger","metadata":{"permalink":"/cardano-updates/2023-07-21-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-ledger.md","source":"@site/blog/2023-07-21-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-07-21T00:00:00.000Z","formattedDate":"July 21, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.715,"hasTruncateMarker":false,"authors":[{"name":"Alexey Kuleshevich","title":"Ledger Team Software Engineer","url":"https://github.com/lehins","imageURL":"https://github.com/lehins.png","key":"lehins"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-07-21-ledger","authors":"lehins","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-21-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-07-21-sre"}},"content":"## High level summary\\n\\nOur focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet. \\nAll members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.\\nWe also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).\\nAdditionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.\\nWe also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. \\n\\n## What we achieved \\n\\n* [[pull-3521]] [[pull-3554]] Improved Governance model (GovernanceProcedures, ProposalProcedure)\\n* [[pull-3520]] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) \\n* [[pull-3531]] Refactored and simplified code interacting with Plutus\\n* [[pull-3558]] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. \\n* [[pull-3550]] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.\\n* [[pull-3551]] [[pull-3546]] [[pull-3472]] Updated tools and added some small improvements \\n* [[issue-3146]] [[pull-3498]] Introduced Conway protocol parameters \\n* [[issue-2948]] [[pull-3499]] Implemented ConwayGenesis with the new protocol parameters\\n\\n## What is currently in progress\\n\\n* [[issue-3494]] [[pull-3495]] Implement returning of proposal deposits\\n* [[issue-3436]] [[pull-3523]] Implement transferring lovelace from UTxO to treasury\\n* [[issue-3509]] [[pull-3552]] Add script-support for the committee hot key\\n* [[issue-3532]] [[pull-3556]] Add script-support for the constitution\\n* [[issue-3543]] [[pull-3557]] Improve the \'new committee\' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support\\n\\n\\n[pull-3521]: https://github.com/input-output-hk/cardano-ledger/pull/3521\\n[pull-3554]: https://github.com/input-output-hk/cardano-ledger/pull/3554\\n[pull-3520]: https://github.com/input-output-hk/cardano-ledger/pull/3520\\n[pull-3531]: https://github.com/input-output-hk/cardano-ledger/pull/3531\\n[pull-3558]: https://github.com/input-output-hk/cardano-ledger/pull/3558\\n[pull-3550]: https://github.com/input-output-hk/cardano-ledger/pull/3550\\n[pull-3551]: https://github.com/input-output-hk/cardano-ledger/pull/3551\\n[pull-3546]: https://github.com/input-output-hk/cardano-ledger/pull/3546\\n[pull-3472]: https://github.com/input-output-hk/cardano-ledger/pull/3472\\n[pull-3498]: https://github.com/input-output-hk/cardano-ledger/pull/3498\\n[pull-3499]: https://github.com/input-output-hk/cardano-ledger/pull/3499\\n[pull-3495]: https://github.com/input-output-hk/cardano-ledger/pull/3495 \\n[pull-3523]: https://github.com/input-output-hk/cardano-ledger/pull/3523\\n[pull-3552]: https://github.com/input-output-hk/cardano-ledger/pull/3552\\n[pull-3556]: https://github.com/input-output-hk/cardano-ledger/pull/3556\\n[pull-3557]: https://github.com/input-output-hk/cardano-ledger/pull/3557 \\n[issue-3494]: https://github.com/input-output-hk/cardano-ledger/issues/3494\\n[issue-2948]: https://github.com/input-output-hk/cardano-ledger/issues/2948\\n[issue-3436]: https://github.com/input-output-hk/cardano-ledger/issues/3436\\n[issue-3532]: https://github.com/input-output-hk/cardano-ledger/issues/3532\\n[issue-3509]: https://github.com/input-output-hk/cardano-ledger/issues/3509\\n[issue-3146]: https://github.com/input-output-hk/cardano-ledger/issues/3146\\n[issue-3543]: https://github.com/input-output-hk/cardano-ledger/issues/3543"},{"id":"2023-07-21-sre","metadata":{"permalink":"/cardano-updates/2023-07-21-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-21-sre.md","source":"@site/blog/2023-07-21-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-07-21T00:00:00.000Z","formattedDate":"July 21, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.685,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-07-21-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-07-21-ledger"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-07-20-goedel"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements and general environment maintenance.\\n\\nSome notable recent improvements include:\\n* Re-spin sanchonet for testing a new node version followed by fork to Conway\\n* Deploying a sanchonet compatible faucet to sanchonet\\n* Migrate shelley qa legacy environment to cardano-world\\n\\n## Lower level summary\\n\\n### Cardano-node\\n* Bump iohk-nix for sanchonet and shelley qa environment updates: [cardano-node-pull-5406](https://github.com/input-output-hk/cardano-node/pull/5406)\\n\\n### Cardano-ops\\n* Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: [cardano-ops-compare](https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085)\\n\\n### Cardano-world\\n* Cardano-node p2p all local roots entrypoint option was added: [cardano-world-pull-102](https://github.com/input-output-hk/cardano-world/pull/102)\\n* Migrate shelley qa legacy environment to cardano-world: [cardano-world-pull-103](https://github.com/input-output-hk/cardano-world/pull/103)\\n* Create a sanchonet compatible faucet: [cardano-world-pull-91](https://github.com/input-output-hk/cardano-world/pull/91)\\n\\n### Iohk-nix\\n\\n* Migrate shelley qa legacy environment to cardano-world: [iohk-nix-pull-549](https://github.com/input-output-hk/iohk-nix/pull/549)\\n* Drop legacy byron environment parameters: [iohk-nix-pull-550](https://github.com/input-output-hk/iohk-nix/pull/550)"},{"id":"2023-07-20-goedel","metadata":{"permalink":"/cardano-updates/2023-07-20-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-20-goedel.md","source":"@site/blog/2023-07-20-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-07-20T00:00:00.000Z","formattedDate":"July 20, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.47,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-07-20-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-07-21-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-07-18-node-cli-api"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is working on formalising mini protocols, the performance\\nmodelling prototype and also finishing off their ICE papers.\\n\\n## Details\\n\\n* Formalization of the chain synchronization mini-protocol in the\\n  thorn calculus\\n\\n* Final pre-publication steps for ICE 2023 papers\\n\\n* Developing approach for specification and verification of\\n  mini-protocols\\n\\n* Started work on porting the DeltaQ framework to a new, more concrete\\n  backend based on piecewise-polynomials"},{"id":"2023-07-18-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-07-18-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-18-node-cli-api.md","source":"@site/blog/2023-07-18-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-07-18T00:00:00.000Z","formattedDate":"July 18, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.065,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-07-18-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-07-20-goedel"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-14-hydra"}},"content":"# 2023-07-05 - 2023-07-18\\n\\n## High level summary\\n\\n- Integrate Conway certificates in cardano-api\\n- Prepare cardano-cli and cardano-api for cardano-node 8.1.2\\n- Tagged cardano-cli 8.3.0.0\\n    - Query for the hash of the constitution (Conway)\\n    - Ability to create votes and governance actions\\n- Tagged cardano-cli 8.3.1.0\\n    - Make it build with ghc-9.6\\n- Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options\\n\\n\\n### cardano-cli\\n\\n- [Upgrade to `optparse-applicative-fork-0.18.1.0`](https://github.com/input-output-hk/cardano-cli/pull/74)\\n- [Integrate cardano-api changes for fixed Show and Eq instances for Proposal type](https://github.com/input-output-hk/cardano-cli/pull/72)\\n- [New version `cardano-cli-8.3.1.0`](https://github.com/input-output-hk/cardano-cli/pull/68)\\n- [Add alonzo era to `Parser AnyShelleyBasedEra`](https://github.com/input-output-hk/cardano-cli/pull/67)\\n- [Use `sbe` variable name for the type is `ShelleyBasedEra`](https://github.com/input-output-hk/cardano-cli/pull/66)\\n- [New version `cardano-cli-8.3.0.0`](https://github.com/input-output-hk/cardano-cli/pull/65)\\n\\n### cardano-api\\n\\n- [Fix ghc version CPP](https://github.com/input-output-hk/cardano-api/pull/123)\\n- [Add a HasTypeProxy constraint to getVerificationKey](https://github.com/input-output-hk/cardano-api/pull/122)\\n- [Incorporate remaining ledger certificates](https://github.com/input-output-hk/cardano-api/pull/119)\\n- [Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0](https://github.com/input-output-hk/cardano-api/pull/117)\\n- [Fix Eq, Show for Proposal type](https://github.com/input-output-hk/cardano-api/pull/115)\\n- [Wire up remaining governance actions](https://github.com/input-output-hk/cardano-api/pull/112)\\n- [Export `withShelleyBasedEraConstraintsForLedger`](https://github.com/input-output-hk/cardano-api/pull/108)\\n- [Remove unnecessary constraint](https://github.com/input-output-hk/cardano-api/pull/106)\\n- [Make it build with ghc-9.6](https://github.com/input-output-hk/cardano-api/pull/104)\\n- [New `shelleyBasedEraConstraints` function](https://github.com/input-output-hk/cardano-api/pull/103)\\n- [New version `cardano-api-8.8.0.0`](https://github.com/input-output-hk/cardano-api/pull/102)\\n- [Add CastVerificationKeyRole StakePoolKey StakeKey instance](https://github.com/input-output-hk/cardano-api/pull/101)\\n- [Update ledger and consensus](https://github.com/input-output-hk/cardano-api/pull/99)\\n- [Rename `era` to `sbe` when type is `ShelleyBasedEra`](https://github.com/input-output-hk/cardano-api/pull/98)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n\\n- [Fix Shutdown test for new exit codes](https://github.com/input-output-hk/cardano-node/pull/5391)\\n\\n### docs\\n\\n- [Fix markdown links](https://github.com/input-output-hk/cardano-node/pull/5387)\\n\\n### CI & project maintenance\\n\\n- [Apply `stylish-haskell` to project](https://github.com/input-output-hk/cardano-cli/pull/69)"},{"id":"2023-07-14-hydra","metadata":{"permalink":"/cardano-updates/2023-07-14-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-14-hydra.md","source":"@site/blog/2023-07-14-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-07-14T00:00:00.000Z","formattedDate":"July 14, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.79,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"},{"name":"Sasha Bogicevic","title":"Hydra Software Engineer","url":"https://github.com/v0d1ch","imageURL":"https://github.com/v0d1ch.png","key":"v0d1ch"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-07-14-hydra","authors":["ffakenz","v0d1ch"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-07-18-node-cli-api"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-07-13-mithril"}},"content":"## High-level summary\\n\\nThis week the team focused on exploring the event sourced persistence in order\\nto improve `hydra-node` performance. Because of this work the team noticed we\\nneed to refactor the emit snapshot emission logic and update the spec in the\\nlight of new changes. They also took the time to revisit their goals and product\\nplans for the next quarter as well as doing some security fixes related to\\nmultisignatures.\\n\\n## What did the team achieve this week\\n\\n-   Finished spike about performance improvements of event sourced persistence [#963](https://github.com/input-output-hk/hydra/pull/963).\\n-   Refactor snapshot emission in protocol logic.\\n-   Revisited our roadmap and goals.\\n-   Prepared and conducated a learning session on lean-waste.\\n-   Improve security of multi-signature checks, see [this Github security advisory](https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4).\\n-   Implemented a cache friendly way to version our binaries [#962](https://github.com/input-output-hk/hydra/pull/962).\\n\\n## What are the goals of next week\\n\\n-   Implement Event sourced persistence [#913](https://github.com/input-output-hk/hydra/pull/913).\\n-   Remove deprecated internal commit [#954](https://github.com/input-output-hk/hydra/pull/954) and close [#728](https://github.com/input-output-hk/hydra/pull/728)."},{"id":"2023-07-13-mithril","metadata":{"permalink":"/cardano-updates/2023-07-13-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-13-mithril.md","source":"@site/blog/2023-07-13-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-07-13T00:00:00.000Z","formattedDate":"July 13, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.92,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-07-13-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-14-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-07-12-consensus"}},"content":"## High level overview\\nThe Mithril team created a new [`2327.0`](https://github.com/input-output-hk/mithril/releases/tag/2327.0) distribution. They focused on preparing the beta launch on the `mainnet`: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the `mainnet` infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. \\n\\nFinally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.\\n\\n## Low level overview\\n- Released the new distribution [`2327.0`](https://github.com/input-output-hk/mithril/releases/tag/2327.0)\\n- Worked on the epic that prepares the Mithril infrastructure for `mainnet` [#767](https://github.com/input-output-hk/mithril/issues/767):\\n  - Completed the issue `Add infrastructure monitoring` [#987](https://github.com/input-output-hk/mithril/issues/987)\\n  - Worked on the issue `Deploy \'mainnet\' infrastructure` [#988](https://github.com/input-output-hk/mithril/issues/988)\\n  - Worked on the issue `Handle Secrets management` [#989](https://github.com/input-output-hk/mithril/issues/989)\\n- Worked on the epic `Benchmark performances of Mithril Aggregator` [#904](https://github.com/input-output-hk/mithril/issues/904):\\n  - Worked on the issue `Design & implement basic stress test tool for aggregator` [#991](https://github.com/input-output-hk/mithril/issues/991)\\n- Worked on optimizations:\\n  - Completed the issue `Remove certificate hash from Artifact` [#932](https://github.com/input-output-hk/mithril/issues/932)\\n  - Completed the issue `Check vulnerabilities in CI` [#1037](https://github.com/input-output-hk/mithril/issues/1037)\\n  - Completed the issue `Add \'created_at\' in Mithril Stake Distribution messages` [#1030](https://github.com/input-output-hk/mithril/issues/1030)\\n  - Completed the issue `Add a \'run-only\' option in end to end test` [#1048](https://github.com/input-output-hk/mithril/issues/1048)\\n- Worked on refactoring:\\n  - Completed the issue `Factorize protocol crypto operations` [#669](https://github.com/input-output-hk/mithril/issues/669)\\n  - Completed the issue `Refactor aggregator dependency injection and services` [#1058](https://github.com/input-output-hk/mithril/issues/1058)\\n  - Completed the issue `Build static binaries in CI` [#874](https://github.com/input-output-hk/mithril/issues/874)\\n- Worked on documentation:\\n  - Completed the issue `Prepare SPO on-boarding guide` [#1049](https://github.com/input-output-hk/mithril/issues/1049)\\n  - Completed the issue `Add instructions to set firewall using iptables` [#1040](https://github.com/input-output-hk/mithril/issues/1040)\\n  - Completed the issue `Update ufw command to set firewall on Mithril Signer installation instructions` [#1041](https://github.com/input-output-hk/mithril/issues/1041)\\n- Worked on bugs:\\n  - Completed the issue `Aggregator does not detect certificate chain epoch gap` [#952](https://github.com/input-output-hk/mithril/issues/952)\\n  - Completed the issue `\'testing-preview\' network does not create certificates` [#1015](https://github.com/input-output-hk/mithril/issues/1015)\\n  - Completed the issue `SQLite compatibility in aggregator` [#837](https://github.com/input-output-hk/mithril/issues/837)\\n  - Completed the issue `Q&A followup fixes` [#1035](https://github.com/input-output-hk/mithril/issues/1035)\\n  - Completed the issue `E2E tests are flaky in CI` [#1023](https://github.com/input-output-hk/mithril/issues/1023)"},{"id":"2023-07-12-consensus","metadata":{"permalink":"/cardano-updates/2023-07-12-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-12-consensus.md","source":"@site/blog/2023-07-12-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-07-12T00:00:00.000Z","formattedDate":"July 12, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.59,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-07-12-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-07-13-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-07-12-performance-and-tracing"}},"content":"## High level summary\\n\\nThis week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a [proposed fix](https://github.com/input-output-hk/ouroboros-network/pull/4620). The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.\\n\\nThe team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.\\n\\nOn the support front, the team [drafted](https://github.com/input-output-hk/ouroboros-consensus/pull/200) an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load."},{"id":"2023-07-12-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-07-12-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-12-performance-and-tracing.md","source":"@site/blog/2023-07-12-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-07-12T00:00:00.000Z","formattedDate":"July 12, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.29,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-07-12-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-07-12-consensus"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-07-07-crypto"}},"content":"## High level summary\\n\\n* Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.\\n* Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.\\n* Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.\\n* Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nOur analysis of the GHC9 build of `cardano-node` has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  \\n  \\nIn an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into `cardano-node`. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.\\n\\n### Infrastructure\\n\\nWe have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in `master`.\\n\\n### Tracing\\n\\nMuch effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.\\n\\n### Nomad backend\\n\\nFor reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  \\n\\nFurthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to `master`."},{"id":"2023-07-07-crypto","metadata":{"permalink":"/cardano-updates/2023-07-07-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-crypto.md","source":"@site/blog/2023-07-07-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-07-07T00:00:00.000Z","formattedDate":"July 7, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":0.795,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-07-07-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-07-12-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-07-07-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Sidechains: First version of snark-based ATMS\\n* mithril: Full node verifier\\n* kes_agent: Keep progress, and prepare CIP and CPS\\n* CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP\\n\\n## Low level summary\\n### kes_agent\\n* KES Agent CIP/CSP. Preparing documents. Will become public in the future.\\n* KES Agent testsuite (https://github.com/input-output-hk/kes-agent/issues/14)\\n* RawBearer abstraction in ouroboros-network-framework (https://github.com/input-output-hk/ouroboros-network/pull/4395)\\n* Maintaining required changes to cardano-base for KES Agent (https://github.com/input-output-hk/cardano-base/pull/317)\\n### Mithril\\n* Final review of the implementation of Full Node Verifier [#939](https://github.com/input-output-hk/mithril/pull/939).\\n  Included benchmarks and further tests.\\n### Sidechains\\n* Schnorr signature implemented\\n* ATMS signature implemented\\n* First benchmarks show that for the committe size we expect, we need 2^21 constraints. \\n### CIPs and community\\n* Addressed some review comments in [#PR506](https://github.com/cardano-foundation/CIPs/pull/506)\\n* Worked with the communityt on [#PR524](https://github.com/cardano-foundation/CIPs/pull/524) to include Keccak as part of the next Plutus release."},{"id":"2023-07-07-goedel","metadata":{"permalink":"/cardano-updates/2023-07-07-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-goedel.md","source":"@site/blog/2023-07-07-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-07-07T00:00:00.000Z","formattedDate":"July 7, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.42,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-07-07-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-07-07-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-07-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the teams have been working on finalising their ICE papers\\nfor publication in EPTCS, formalising concensus, and investigating chain\\nsync.\\n\\n## Details\\n\\n* Preparing final versions of ICE papers\\n\\n* Reviewing the chain sync design and documentation\\n\\n* Refactoring the thorn calculus\\n\\n* First draft of Praos specification\\n\\n* Developing bounding factors on timeouts"},{"id":"2023-07-07-hydra","metadata":{"permalink":"/cardano-updates/2023-07-07-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-hydra.md","source":"@site/blog/2023-07-07-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-07-07T00:00:00.000Z","formattedDate":"July 7, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.865,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"},{"name":"Sasha Bogicevic","title":"Hydra Software Engineer","url":"https://github.com/v0d1ch","imageURL":"https://github.com/v0d1ch.png","key":"v0d1ch"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-07-07-hydra","authors":["ffakenz","v0d1ch"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-07-07-goedel"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-07-07-sre"}},"content":"## High-level summary\\n\\nThis week the Hydra team accomplished some nice progress. They secured the\\nnetwork layer further by implementing authentication of the messages between the\\npeers in the Head protocol. In the process they also managed to separate\\nHeartBeat messages from the protocol ones which somewhat improved the quality of\\ncode in Hydra. The team also finished work related to sending only transaction\\nids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark\\npublishing on the website.\\n\\n## What did the team achieve this week\\n\\n- [Implemented](https://github.com/input-output-hk/hydra/issues/727) authenticated messages\\n- [Implemented](https://github.com/input-output-hk/hydra/issues/728) send only transaction ids in ReqSn messages\\n- Separate [HeartBeat](https://github.com/input-output-hk/hydra/pull/969) messages from the core network protocol messages\\n- Publish multiple pre-defined [benchmarks](https://github.com/input-output-hk/hydra/pull/947)\\n- [Fixed](https://github.com/input-output-hk/hydra/pull/967) a smoke-test issue where funds would not be returned to the faucet\\n- Found a bug in the [off-chain signature\\n  verification](https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1)\\n\\n## What are the goals of next week\\n\\n- Spike on performance improvements of event sourced persistence [#913](https://github.com/input-output-hk/hydra/issues/913)\\n- Add new endpoint for submitting client transactions\\n- Remove commit from internal wallet"},{"id":"2023-07-07-sre","metadata":{"permalink":"/cardano-updates/2023-07-07-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-07-sre.md","source":"@site/blog/2023-07-07-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-07-07T00:00:00.000Z","formattedDate":"July 7, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.815,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-07-07-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-07-07-hydra"},"nextItem":{"title":"Developer Experience Update","permalink":"/cardano-updates/2023-07-06-developer-experience"}},"content":"## High level summary\\n\\nThe SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.\\n\\nSome notable recent improvements include:\\n* Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment\\n* Explorer component updates\\n* Spongix caching server rewrite for R2 Cloudflare support and various performance improvements\\n\\n## Lower level summary\\n\\n### Cardano-node\\n* Nixos service update to enable non-systemd socket activation multi-node relays: [cardano-node-pull-5360](https://github.com/input-output-hk/cardano-node/pull/5360)\\n\\n### Cardano-ogmios\\n* Cardano ogmios bump to 5.6.0 for nixos service: [cardano-ogmios-pull-6](https://github.com/input-output-hk/cardano-ogmios/pull/6)\\n\\n### Cardano-ops\\n* Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: [cardano-ops-compare](https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751)\\n\\n### Cardano-rosetta\\n* Cardano-rosetta nixos modifications for rosetta 2.1.0 service: [cardano-rosetta-pull-532](https://github.com/cardano-foundation/cardano-rosetta/pull/532)\\n\\n### Cardano-world\\n* Cardano-node entrypoint improvements: [cardano-world-pull-99](https://github.com/input-output-hk/cardano-world/pull/99)\\n* Further automate pool performance SQL query: [cardano-world-pull-100](https://github.com/input-output-hk/cardano-world/pull/100)\\n* Performance and benchmark job related tweaks: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3)\\n* Explorer related component version bumps and traefik definition handline: [cardano-world-pull-101](https://github.com/input-output-hk/cardano-world/pull/101)\\n\\n### Spongix\\n* Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: [spongix-simple-branch](https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911)"},{"id":"2023-07-06-developer-experience","metadata":{"permalink":"/cardano-updates/2023-07-06-developer-experience","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-06-developer-experience.md","source":"@site/blog/2023-07-06-developer-experience.md","title":"Developer Experience Update","description":"High level summary","date":"2023-07-06T00:00:00.000Z","formattedDate":"July 6, 2023","tags":[{"label":"devx","permalink":"/cardano-updates/tags/devx"}],"readingTime":1.145,"hasTruncateMarker":false,"authors":[{"name":"Moritz Angermann","title":"Head of Developer Experience","url":"https://github.com/angerman","imageURL":"https://github.com/angerman.png","key":"angerman"}],"frontMatter":{"title":"Developer Experience Update","slug":"2023-07-06-developer-experience","authors":"angerman","tags":["devx"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-07-07-sre"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-07-04-db-sync"}},"content":"## High level summary\\n\\nThe Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.\\n\\n## Lower level summary\\n\\n### build support & maintainance\\n\\nThe DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.\\n\\n### compiler upgrades\\n\\nCompatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We\'ve also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.\\n\\n\\n### Hydra Tools\\nOur repository, [input-output-hk/actions](https://github.com/input-output-hk/hydra-tools), has seen quite some improvements to facility the hydra <-> github integration.\\n\\n\\n### haskell.nix\\n[Haskell.nix](https://github.com/input-output-hk/haskell.nix) has been maintained and updated with the addition of preliminary GHC 9.8 support.\\n\\n### devx\\n\\nThe [devx](https://github.com/input-output-hk/devx) repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our [actions/devx](https://github.com/input-output-hk/actions) GitHub Actions, we have a consistent set of tooling for\\n- nix develop shells\\n- GitHub CodeSpaces integration\\n- VSCode DevContainer support\\n- GitHub Actions integration\\n\\n### upstream tooling\\n\\nOur team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix."},{"id":"2023-07-04-db-sync","metadata":{"permalink":"/cardano-updates/2023-07-04-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-04-db-sync.md","source":"@site/blog/2023-07-04-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-07-04T00:00:00.000Z","formattedDate":"July 4, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.73,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-07-04-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Developer Experience Update","permalink":"/cardano-updates/2023-07-06-developer-experience"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-07-04-node-cli-api"}},"content":"## High level summary\\nWe\'ve made progress in all high level objectives\\n- CIP-1694 integration design\\n- UTxO-HD integration proof of concept\\n- schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested\\n- Many devx issues resolved\\n\\n## Lower level summary\\n- We have improved and validated the design for the Conway integration in db-sync\\n- Improved the initial integration of the UTxO-HD feauture branches which are under test\\n- Prepared a new release 13.1.1.3 which supports node 8.1.1\\n[#1455](https://github.com/input-output-hk/cardano-db-sync/pull/1455).\\n- This also fixes a bug\\n[#1451](https://github.com/input-output-hk/cardano-db-sync/issues/1451)\\n- Added new tests to the new tx_out options\\n[#1429](https://github.com/input-output-hk/cardano-db-sync/pull/1429)\\n- Fixed a chronic issue in db-sync related to exception handling and concurrency\\nThis fixes many other issues and simplifies the logic in db-sync\\n[#1447](https://github.com/input-output-hk/cardano-db-sync/pull/1447)\\n- A number of fixes and improvements in ci, docker, devx, docs\\n[#1436](https://github.com/input-output-hk/cardano-db-sync/pull/1436)\\n[#1442](https://github.com/input-output-hk/cardano-db-sync/pull/1442)\\n[#1448](https://github.com/input-output-hk/cardano-db-sync/pull/1448)\\n[#1452](https://github.com/input-output-hk/cardano-db-sync/pull/1452)"},{"id":"2023-07-04-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-07-04-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-07-04-node-cli-api.md","source":"@site/blog/2023-07-04-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-07-04T00:00:00.000Z","formattedDate":"July 4, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.495,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-07-04-node-cli-api","authors":"carlos","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-07-04-db-sync"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-30-hydra"}},"content":"# 2023-06-21 - 2023-07-04\\n\\n## High level summary\\n\\n- Started integration of conway era into the cardano-api,\\n- Pre-release of cardano-cli 8.2.1 which enables creating goveranance \\"Update constitution\\" governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.\\n- Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.\\n- Continue refactoring cardano-testnet\\n- CI and docs house keeping on the new cardnao-cli and cardano-api repositories\\n\\n\\n### cardano-cli\\n\\n- [Update to `cardano-api-8.7.0.0`](https://github.com/input-output-hk/cardano-cli/pull/60)\\n- [Release 8.2.1](https://github.com/input-output-hk/cardano-cli/pull/44)\\n- [Use new function-based API instead of using query data types directly](https://github.com/input-output-hk/cardano-cli/pull/39)\\n\\n### cardano-api\\n\\n- [Release cardano-api 8.7](https://github.com/input-output-hk/cardano-api/pull/94)\\n- [New version `cardano-api-8.6.0.0`](https://github.com/input-output-hk/cardano-api/pull/92)\\n- [New version `cardano-api-8.2.0.0.1.0.0`](https://github.com/input-output-hk/cardano-api/pull/90)\\n- [Backport: Add era phantom type parameter to Certificate](https://github.com/input-output-hk/cardano-api/pull/88)\\n- [Parameterise `Certificate` type with phantom `era` type argument](https://github.com/input-output-hk/cardano-api/pull/86)\\n- [Voting procedure and proposal procedure updates](https://github.com/input-output-hk/cardano-api/pull/85)\\n- [Parameterise `Certificate` with `era`](https://github.com/input-output-hk/cardano-api/pull/84)\\n- [Parameterise `Certificate` type with phantom `era` type argument](https://github.com/input-output-hk/cardano-api/pull/83)\\n- [Add contributing guide](https://github.com/input-output-hk/cardano-api/pull/79)\\n- [Unified `ShelleyBasedEra` constraint summoning](https://github.com/input-output-hk/cardano-api/pull/77)\\n- [Update CHaP index](https://github.com/input-output-hk/cardano-api/pull/70)\\n- [CIP-1694 API - Part 1](https://github.com/input-output-hk/cardano-api/pull/41)\\n\\n\\n### cardano-node\\n\\n- [cardano-node top level error handler](https://github.com/input-output-hk/cardano-node/pull/5356)\\n- [Turn on some traces by default](https://github.com/input-output-hk/cardano-node/pull/5353)\\n\\n### cardano-testnet\\n\\n- [Report payment address and UTxOs in testnets](https://github.com/input-output-hk/cardano-node/pull/5364)\\n- [New Conway `stake-snapshot` tests](https://github.com/input-output-hk/cardano-node/pull/5362)\\n\\n### docs\\n\\n- [Add contributing guide](https://github.com/input-output-hk/cardano-api/pull/79)\\n- [Release workflow description](https://github.com/input-output-hk/cardano-api/pull/33)\\n- [Turn on some traces by default](https://github.com/input-output-hk/cardano-node/pull/5353)\\n\\n\\n\\n### CI & project maintenance\\n\\n- [Add PR changelog check](https://github.com/input-output-hk/cardano-api/pull/75)\\n- [Fix stylish haskell in github action workflow](https://github.com/input-output-hk/cardano-api/pull/71)\\n- [Enable CI on PRs from forks](https://github.com/input-output-hk/cardano-api/pull/62)\\n- [Remove merge_group trigger from changelog check CI](https://github.com/input-output-hk/cardano-cli/pull/53)\\n- [Add PR changelog check. Add core-tech group to GHA description codeowners.](https://github.com/input-output-hk/cardano-cli/pull/46)\\n- [Fix stylish haskell in github action workflow](https://github.com/input-output-hk/cardano-cli/pull/41)\\n- [Enable CI in PRs from forks](https://github.com/input-output-hk/cardano-cli/pull/40)\\n- [Add contributing guide](https://github.com/input-output-hk/cardano-cli/pull/48)"},{"id":"2023-06-30-hydra","metadata":{"permalink":"/cardano-updates/2023-06-30-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-30-hydra.md","source":"@site/blog/2023-06-30-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-06-30T00:00:00.000Z","formattedDate":"June 30, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.925,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-06-30-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-07-04-node-cli-api"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-29-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team wrote and published the monthly report for June,\\nimplemented the end-to-end functionality for external commits, and tested it on\\nthe preview environment. They also listed Hydra as a tool on the Cardano\\ndeveloper portal, providing more visibility for the project. The team clarified\\nthe path forward for L2 protocol improvements and explored an alternative CI\\napproach using cabal instead of nix. Additionally, they released version 0.11.0,\\nmarking another milestone in the project&rsquo;s development.\\n\\n## What did the team achieve this week\\n\\n-   Written and published the monthly report for [June](https://hydra.family/head-protocol/monthly/2023-06)\\n-   Implemented external commits end-to-end incl. tested it on preview [#215](https://github.com/input-output-hk/hydra/issues/215)\\n-   Listed Hydra as a tool on cardano [developer portal](https://developers.cardano.org/tools/)\\n-   Cleared up path forward on L2 protocol improvements [#728](https://github.com/input-output-hk/hydra/issues/728)\\n-   Established an alternative CI using more cabal tools [#923](https://github.com/input-output-hk/hydra/pull/923)\\n-   Release version [0.11.0](https://github.com/input-output-hk/hydra/releases/tag/0.10.0)\\n\\n## What are the goals of next week\\n\\n-   Spike on performance improvements of event sourced persistence [#913](https://github.com/input-output-hk/hydra/issues/913)\\n-   Complete ReqSn only sends transaction ids [#728](https://github.com/input-output-hk/hydra/issues/728)\\n-   Groom and plan last items for 0.12.0 (remove internal commit)\\n-   Improve reliability of benchmarks"},{"id":"2023-06-29-mithril","metadata":{"permalink":"/cardano-updates/2023-06-29-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-29-mithril.md","source":"@site/blog/2023-06-29-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-06-29T00:00:00.000Z","formattedDate":"June 29, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":2.205,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-06-29-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-30-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-06-28-consensus"}},"content":"## High level overview\\nThe Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano `mainnet` infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.\\n\\nFinally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.\\n\\n## Low level overview\\n- Worked on the epic that prepares the Mithril infrastructure for `mainnet` [#767](https://github.com/input-output-hk/mithril/issues/767):\\n  - Worked on the issue `Add infrastructure monitoring` [#987](https://github.com/input-output-hk/mithril/issues/987)\\n- Completed the epic `Prepare Mithril Signer deployment model for SPO` [#862](https://github.com/input-output-hk/mithril/issues/862):\\n  - Completed the issue `Design recommended deployment model for SPOs on \'mainnet\' and \'preview\'/\'preprod\'` [#961](https://github.com/input-output-hk/mithril/issues/961)\\n  - Completed the issue `Adapt infrastructure to use Mithril Relay` [#1018](https://github.com/input-output-hk/mithril/issues/1018)\\n  - Completed the issue `Announce the new signer deployment model in a dev blog post` [#1017](https://github.com/input-output-hk/mithril/issues/1017)\\n- Worked on the epic `Benchmark performances of Mithril Aggregator` [#904](https://github.com/input-output-hk/mithril/issues/904):\\n  - Worked on the issue `Design & implement basic stress test tool for aggregator` [#991](https://github.com/input-output-hk/mithril/issues/991)\\n- Worked on bugs:\\n  - Completed the issue `Aggregator does not exit on critical error` [#993](https://github.com/input-output-hk/mithril/issues/993)\\n  - Completed the issue `Computation of master certificate of an epoch is incorrect` [#1006](https://github.com/input-output-hk/mithril/issues/1006)\\n  - Completed the issue `End to end tests are flaky` [#954](https://github.com/input-output-hk/mithril/issues/954)\\n  - Worked on the issue `\'testing-preview\' network does not create certificates` [#1015](https://github.com/input-output-hk/mithril/issues/1015)\\n- Worked on optimizations:\\n  - Completed the issue `Dates format is not standardized` [#946](https://github.com/input-output-hk/mithril/issues/946)\\n  - Completed the issue `Add \'recompute-certificates-hash\' command to aggregator` [#1001](https://github.com/input-output-hk/mithril/issues/1001)\\n  - Completed the issue `Add a retry mechanism for artifact creation in aggregator` [#984](https://github.com/input-output-hk/mithril/issues/984)\\n  - Completed the issue `Log node version at startup in Aggregator/Signer` [#944](https://github.com/input-output-hk/mithril/issues/944)\\n  - Completed the issue `Reactivate Publish Results job in CI` [#978](https://github.com/input-output-hk/mithril/issues/978)\\n  - Completed the issue `Clean \'pending_snapshot\' directory of aggregator` [#983](https://github.com/input-output-hk/mithril/issues/983)\\n  - Completed the issue `Update OpenAPI spec examples` [#1000](https://github.com/input-output-hk/mithril/issues/1000)\\n- Worked on refactoring:\\n  - Completed the issue `Refactor \'MithrilStakeDistribution\' entity` [#967](https://github.com/input-output-hk/mithril/issues/967)\\n  - Completed the issue `Refactoring client` [#982](https://github.com/input-output-hk/mithril/issues/982)\\n  - Completed the issue `Refactor download code in client` [#1010](https://github.com/input-output-hk/mithril/issues/1010)\\n  - Worked on the issue `Factorize protocol crypto operations` [#669](https://github.com/input-output-hk/mithril/issues/669)\\n- Worked on dependencies:\\n  - Completed the issue `Upgrade Cardano node to \'8.1.1\'` [#973](https://github.com/input-output-hk/mithril/issues/973)"},{"id":"2023-06-28-consensus","metadata":{"permalink":"/cardano-updates/2023-06-28-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-28-consensus.md","source":"@site/blog/2023-06-28-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-06-28T00:00:00.000Z","formattedDate":"June 28, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.85,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-06-28-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-29-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-06-28-performance-and-tracing"}},"content":"## High level summary\\n\\nDuring the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. \\n\\nThe team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.\\n\\nRegarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. \\n\\n### Genesis\\n\\n- We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.\\n\\n- We [decided on an approach](https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722) of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.\\n\\n### UTxO-HD\\n\\n- We merged the last of the PRs that were part of UTxO-HD improvements for version [0.1](https://github.com/input-output-hk/ouroboros-consensus/issues/149): expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.\\n- We [added](https://github.com/input-output-hk/ouroboros-consensus/pull/87) a new \\"legacy\\" cardano block in a new `ouroboros-consensus-cardano-legacy-block` package that should ease the transition for some downstream packages to UTxO-HD, like `db-sync`. This is really only useful for downstream packages that use the parts of consensus that don\'t involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.\\n- We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this."},{"id":"2023-06-28-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-06-28-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-28-performance-and-tracing.md","source":"@site/blog/2023-06-28-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-06-28T00:00:00.000Z","formattedDate":"June 28, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.885,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-06-28-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-06-28-consensus"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-06-23-goedel"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.\\n* Infrastructure: The first batch of refactoring and documentation for our `tx-generator` has been merged to `master`.\\n* Tracing: We\'ve looked into an issue where the tracing system\'s concurrency could prevent a graceful node shutdown.\\n* Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nThe compiler switch to GHC9 as the default build platform for `cardano-node` and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9\'s significantly different inlining behaviour may produce those effects. We\'re currently locating the specific places in component code that have the most extensive effect in that regard.  \\n  \\nUsing the `forge-stress` approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.\\n\\n### Infrastructure\\n\\nThe `tx-generator` is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to `master`. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.\\n\\n### Tracing\\n\\nThe tracing system\'s concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.\\n\\n### Nomad backend\\n\\nWith the data gathered from running the new nomad cloud backend, we\'ve been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.\\n\\nAdditionally, we\'re continuing the new backend\'s validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend."},{"id":"2023-06-23-goedel","metadata":{"permalink":"/cardano-updates/2023-06-23-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-goedel.md","source":"@site/blog/2023-06-23-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-06-23T00:00:00.000Z","formattedDate":"June 23, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.335,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-06-23-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-06-28-performance-and-tracing"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-23-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the teams presented two papers at ICE 2023.\\n\\n## Details\\n\\n* Presented two papers at ICE 2023: https://www.discotec.org/2023/ice\\n\\n* Analysing and implementing chain synchronization mini protocol\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/"},{"id":"2023-06-23-hydra","metadata":{"permalink":"/cardano-updates/2023-06-23-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-hydra.md","source":"@site/blog/2023-06-23-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-06-23T00:00:00.000Z","formattedDate":"June 23, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.79,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"},{"name":"Pascal Grange","title":"Hydra Software Engineer","url":"https://github.com/pgrange","imageURL":"https://github.com/pgrange.png","key":"pgrange"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-06-23-hydra","authors":["ffakenz","pgrange"],"tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-06-23-goedel"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-06-23-network"}},"content":"## High-level summary\\n\\nThis week, the Hydra team shared progress updates during the monthly review\\nmeeting (monthly report and video recording available soon) and started\\nexperimenting on preview network with the new commit from external wallet\\nfeature.\\n\\n## What did the team achieve this week\\n\\n- Monthly report & review meeting, demonstrating [commit from external\\n  wallet](https://github.com/input-output-hk/hydra/pull/887)\\n- Published regular [benchmarks for\\n  Hydra](https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks)\\n- Moved forward the journey for external commits using multiple script UTxOs\\n  [#903](https://github.com/input-output-hk/hydra/pull/903)\\n- Changed the API to only put transaction id in snapshots, instead of the full\\n  transactions [#922](https://github.com/input-output-hk/hydra/pull/922) -> this\\n  is now evolved into fully addressing [#728](\\n  https://github.com/input-output-hk/hydra/issues/728)\\n- Fuel marking is now optional as one can now commit from an external wallet\\n  [#924](https://github.com/input-output-hk/hydra/pull/924)\\n- Add flag option to display node version on tui\\n  [#934](https://github.com/input-output-hk/hydra/pull/934)\\n\\n## What are the goals of next week\\n\\n- Complete external commits using multiple script UTxOs [#903](https://github.com/input-output-hk/hydra/pull/903)\\n- New release 0.11.0\\n- Dirtroad solution of improved persistence performance [#913](https://github.com/input-output-hk/hydra/pull/913)"},{"id":"2023-06-23-network","metadata":{"permalink":"/cardano-updates/2023-06-23-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-network.md","source":"@site/blog/2023-06-23-network.md","title":"Network Team Update","description":"Network Update","date":"2023-06-23T00:00:00.000Z","formattedDate":"June 23, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.7,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-06-23-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-23-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-06-23-sre"}},"content":"## Network Update\\n\\n### Key contributions\\n\\nWe held a series of session to review the implementation of big ledger peers\\n(eclipse evasion). See [#4462].\\n\\nWe get a request from a 3rd party to clarify an inconsistency between CDDL spec\\nand protocol implementation.  We worked out a nice solution which takes\\nadvantage of the `any` notion available in `CDDL`.  On the Haskell side we\\nprovide `Any` type which gen generate almost any CBOR term (some are excluded\\nonly because they are not decoded back to the same form, and we relay on that\\nproperty).  See [#4580].\\n\\nWe fixed a bunch of problems of the `cardano-cli ping` command.  It also now has\\na limited support of `node-to-client` mini-protocol (the `-c` option is\\nignored, as it cannot be supported by `node-to-client` protocol).  Note that\\nthe format of messages has changed, timestamps are printed in ISO8601 format.\\nSee [#4601], [#5326], [#5313], [#30]\\n\\nIn order to provide a new flag in the topology file which enables ledger peers\\nwhen the chain is close to the tip, we continued to work on [#4530].  This is\\ncurrently in review, the consensus team will need to provide us with the new\\napi.  This feature is useful for two reasons: makes it easier to maintain\\na topology file, it will also limit the traffic on public roots generated by\\nfor example full node wallets and distribute it to ledger peers.\\n\\nWe also continued to work on a blog post which describes the journey of design\\n& implementation of the dynamic P2P network layer.  Too be announced soon :).  \\n\\n### Other smaller changes\\n\\nWe limit the concurrency of resolving dns names.  Up to 8 root peers or ledger\\npeers DNS names are resolved concurrently, and at most 2 local root peer DNS\\nnames. See [#4596].\\n\\nWe fixed handshake query timeout in [#4603].\\n\\nWe renamed one of the block-fetch decision constructors as requested by the\\nconsensus team, see [#4608].\\n\\n[#30]: https://github.com/input-output-hk/cardano-cli/pull/30\\n[#4462]: https://github.com/input-output-hk/ouroboros-network/pull/4462\\n[#4580]: https://github.com/input-output-hk/ouroboros-network/pull/4580\\n[#4596]: https://github.com/input-output-hk/ouroboros-network/pull/4596\\n[#4598]: https://github.com/input-output-hk/ouroboros-network/issues/4598\\n[#4601]: https://github.com/input-output-hk/ouroboros-network/pull/4601\\n[#5313]: https://github.com/input-output-hk/cardano-node/pull/5313\\n[#5326]: https://github.com/input-output-hk/cardano-node/pull/5326\\n[#4603]: https://github.com/input-output-hk/ouroboros-network/pull/4603\\n[#4530]: https://github.com/input-output-hk/ouroboros-network/issues/4530\\n[#4608]: https://github.com/input-output-hk/ouroboros-network/pull/4608"},{"id":"2023-06-23-sre","metadata":{"permalink":"/cardano-updates/2023-06-23-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-23-sre.md","source":"@site/blog/2023-06-23-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-06-23T00:00:00.000Z","formattedDate":"June 23, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":0.98,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-06-23-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-06-23-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-16-hydra"}},"content":"## High level summary\\n\\nThe SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:\\n* A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality\\n* Cardano Sanchonet environment was stood up to test Conway era functionality\\n* Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case\\n* Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments\\n\\n## Lower level summary\\n\\n### Cardano-node\\n\\n- Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: [cardano-node-pull-5318](https://github.com/input-output-hk/cardano-node/pull/5318)\\n\\n### Cardano-ops\\n\\n- Updates required for node 8.1.1 nixos service: [cardano-ops-pull-414](https://github.com/input-output-hk/cardano-ops/pull/414)\\n- Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: [cardano-ops-ops-local](https://github.com/input-output-hk/cardano-ops/tree/ops-local), [cardano-ops-mn-mixed-p2p](https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p)\\n\\n### Cardano-world\\n\\n- Add Sanchonet environment: [cardano-world-pull-96](https://github.com/input-output-hk/cardano-world/pull/96)\\n\\n### Ci-ops\\n\\n- Add devx-ci cluster integration for legacy darwin [ci-ops-compare](https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9)\\n\\n### Ci-world\\n\\n- Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: [ci-world-compare](https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250)\\n\\n### Devx-ci\\n\\n- A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: [devx-ci-repo](https://github.com/input-output-hk/devx-ci)\\n\\n### Iohk-nix\\n\\n- Add Sanchonet environment: [iohk-nix-pull-545](https://github.com/input-output-hk/iohk-nix/pull/545)"},{"id":"2023-06-16-hydra","metadata":{"permalink":"/cardano-updates/2023-06-16-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-16-hydra.md","source":"@site/blog/2023-06-16-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-06-16T00:00:00.000Z","formattedDate":"June 16, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.815,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-06-16-hydra","authors":"ffakenz","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-06-23-sre"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-15-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team focused their efforts on continuing to investigate and\\nexperiment operating a head on mainnet. They collected several bugs and issues\\nand worked on fixing them. Now the team is soon to release a new version,\\n0.11.0, which comes with a lot of improvements and bug fixes.\\n\\n\\n## What did the team achieve this week\\n\\n-   Restored and fixed a bug which stalled our head on mainnet [#927](https://github.com/input-output-hk/hydra/issues/927)\\n-   Solved one user issue [#914](https://github.com/input-output-hk/hydra/issues/914)\\n-   Reduced significantly local state size and logs by removing the full scripts from it [#928](https://github.com/input-output-hk/hydra/pull/928)\\n-   (pending review) Reduced snapshot size in the API, by only including tx ids [#922](https://github.com/input-output-hk/hydra/pull/922)\\n\\n## What are the goals of next week\\n\\n-   New release 0.11.0\\n-   Monthly report & review meeting.\\n-   Fix some minor bugs discovered when operating our head on mainnet\\n-   Complete journey for external commits using multiple script UTxOs [#903](https://github.com/input-output-hk/hydra/pull/903)\\n-   Publish benchmarks and provide regular benchmarks for Hydra [#186](https://github.com/input-output-hk/hydra/issues/186)"},{"id":"2023-06-15-mithril","metadata":{"permalink":"/cardano-updates/2023-06-15-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-15-mithril.md","source":"@site/blog/2023-06-15-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-06-15T00:00:00.000Z","formattedDate":"June 15, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.795,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-06-15-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-16-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-06-14-consensus"}},"content":"## High level overview\\nThe Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client\u2019s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.\\n\\nFinally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.\\n\\n## Low level overview\\n- Completed on the epic that designs and implements generic signing/verification of entity services [#780](https://github.com/input-output-hk/mithril/issues/780):\\n  - Completed the issue `Create the sub-command for \'Mithril Stake Distribution\' in client` [#896](https://github.com/input-output-hk/mithril/issues/896)\\n  - Completed the issue `Adapt end to end tests to handle new types of data` [#899](https://github.com/input-output-hk/mithril/issues/899)\\n  - Completed the issue `Update client documentation` [#897](https://github.com/input-output-hk/mithril/issues/897)\\n  - Completed the issue `Update architecture documentations for new types of data` [#898](https://github.com/input-output-hk/mithril/issues/898)\\n  - Completed the issue `Refactoring client` [#960](https://github.com/input-output-hk/mithril/issues/960)\\n- Worked on the epic that prepares the Mithril infrastructure for `mainnet` [#767](https://github.com/input-output-hk/mithril/issues/767):\\n  - Completed the issue `Enhance terraform infrastructure` [#930](https://github.com/input-output-hk/mithril/issues/930)\\n- Completed the epic that implements the computation of the stake distribution for `mainnet` [#880](https://github.com/input-output-hk/mithril/issues/880):\\n  - Completed the issue `Check performance impact of new stake distribution command on the \'mainnet\'` [#962](https://github.com/input-output-hk/mithril/issues/962)\\n- Worked on the epic `Prepare Mithril Signer deployment model for SPO` [#862](https://github.com/input-output-hk/mithril/issues/862):\\n  - Worked on the issue `Design recommended deployment model for SPOs on \'mainnet\' and  \'preview\'/\'preprod\'` [#961](https://github.com/input-output-hk/mithril/issues/961)\\n- Worked on bugs and optimizations:\\n  - Completed the issue `Aggregator does not always detect new immutable file` [#953](https://github.com/input-output-hk/mithril/issues/953)\\n  - Completed the issue `CI tests fail with Rust \'1.70.0\'` [#958](https://github.com/input-output-hk/mithril/issues/958)\\n  - Worked on the issue `End to end tests are flaky` [#954](https://github.com/input-output-hk/mithril/issues/954)\\n  - Worked on the issue `Certificate dates in metadata are not on the same timezone` [#946](https://github.com/input-output-hk/mithril/issues/946)\\n  - Worked on the issue `Refactor \'MithrilStakeDistribution\' entity` [#967](https://github.com/input-output-hk/mithril/issues/967)\\n  - Completed the issue `Fix \'Mithril Client multi-platform test\' with new client interface` [#956](https://github.com/input-output-hk/mithril/issues/956)\\n  - Completed the issue `Enhance \'ImmutableDigesterError::NotEnoughImmutable\' error` [#969](https://github.com/input-output-hk/mithril/issues/969)\\n  - Completed the issue `Client \'snapshot download\' command fails with option \'--download-dir\'` [#979](https://github.com/input-output-hk/mithril/issues/979)"},{"id":"2023-06-14-consensus","metadata":{"permalink":"/cardano-updates/2023-06-14-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-14-consensus.md","source":"@site/blog/2023-06-14-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-06-14T00:00:00.000Z","formattedDate":"June 14, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.115,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-06-14-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-15-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-06-14-performance-and-tracing"}},"content":"## High level summary\\n\\nThe Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the `Byron` and `TPraos` eras do not need to be checkpointed for an MVP.\\nThere is one remaining question (which applies also to the `Praos` era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated \\"Limit on Patience\\" timeout sufficiently bounds how long the adversary can inflate a victim\'s overall sync time.\\n\\nOn the UTxO-HD front, the prototype branch was rebased on top of the latest `ouroboros-consensus` `main` branch and integrated on top of `cardano-node 8.1.1-pre`. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.\\nWe managed to run a node again with UTxO-HD enabled. \\nWe also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for `cardano-node`, which uncovered a performance regression on the Network component when using `GHC-9.2/9.4`. This is being addressed.\\n\\nRegarding our support activities, we Released `fs-sim-0.2.0.0` and are in the process of preparing the 8.2 release of `cardano-node`. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests."},{"id":"2023-06-14-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-06-14-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-14-performance-and-tracing.md","source":"@site/blog/2023-06-14-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-06-14T00:00:00.000Z","formattedDate":"June 14, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.515,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-06-14-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-06-14-consensus"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-06-12-network"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve continued release benchmarking and established a new baseline for `8.0.0`.\\n* New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.\\n* Nomad backend: The healthcheck system for the the nomad cloud has been completed. We\'ve performed the first full runs on the new backend.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nIn our release benchmarking cycle, we established a new performance baseline for `8.0.0`. Additionally, we\'ve measured\\nperformance under various workloads for `8.1.1-pre`; the results look promising and validate the optimization efforts\\ndone on several system components.  \\n  \\nIn the meantime, we\'ve finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for\\nbenchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.\\n\\n\\n### Tracing\\n\\nThe legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be\\nmeaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific\\ntrace messages are closely aligned. We\'ve found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  \\n\\nAdditionally, we\'ve had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.\\n\\n\\n### Nomad backend\\n\\nAs the new backend\'s healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we\'ve performed our first 52-node cluster runs on nomad cloud. We\'re currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  \\n\\nThis means the backend is entering validation phase, where we systematically compare all metrics taken from the new\\ninfrastructure to the existing ones, including determining reproducibility and variance."},{"id":"2023-06-12-network","metadata":{"permalink":"/cardano-updates/2023-06-12-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-12-network.md","source":"@site/blog/2023-06-12-network.md","title":"Network Team Update","description":"Network Update","date":"2023-06-12T00:00:00.000Z","formattedDate":"June 12, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.205,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-06-12-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-06-14-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-06-09-crypto"}},"content":"## Network Update\\n\\n### Key contributions and advances\\n\\nWe merged `light peer sharing` feature, which allows to include inbound peers\\ninto outbound governor known peers.  This is the primary way for new\\nunregistered nodes to enter the network, which then can be shared using peer\\nsharing.  Note that peer sharing is an experimental feature which is disabled\\nuntil genesis & eclipse evasion as fully implemented. See [#3596].\\n\\nWe are making progress reviewing eclipse evasion, [#3886].\\n\\nWe fixed another bug in local root peers.  We found out that if the local roots\\nwhere ignored until the first domain name was resolved, see [#4583].  The bug\\nfix was backported and released in `ouroboros-network-0.8.1.1`.\\n\\nWe re-started working on dynamically enabling block forging to address issue\\n[#3159], which will enable us to release `P2P` on block producing nodes. See [#140].\\n\\n#### New `cardano-ping` / `cardano-cli ping` release\\n\\nWe prepared a new release of `cardano-ping` library which supports the new\\nquery feature (query supported versions). See [#4589], [#4593] and [#5313].\\nThe new version of `cardano-cli ping` will use `ISO8601` formatted\\ntimestamps; also the formatting of ping results is slightly improved, and it\\nwill introduce the new `--query-versions` (`-Q`) switch.  If the remote site\\nsupports the query parameter, the command will print:\\n```\\nredacted-ip:port network rtt: 0.064\\nredacted-ip:port handshake rtt: 0.064010896s\\nredacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat\\norAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]\\n```\\notherwise it will print the negotiation results\\n```\\nredacted-ip:port network rtt: 0.045\\nredacted-ip:port handshake rtt: 0.101867615s\\nredacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder\\n```\\nNote that in that case `cardano-cli ping` offers `InitiatorAndResponder`, which\\nallows us to detect whether the remote side is an `InitiatorOnly` or\\n`InitiatorAndResponder`.   Also `cardano-cli ping` will no longer announce\\nitself as `InitiatorAndResponder`, except for the case mentioned above.\\n\\n### Other smaller contributions\\n\\nOn a request from the Marlow Team, we published haddocks of `typed-protocols`,\\nwhich are now available [here][typed-protocols-haddocks] ([#40], [#41]).\\n\\nWe made a new release of `strict-stm-1.1.0.1` on Hackage, which fixed a bug in\\npackage description file, [#101] .\\n\\nWe also helped to debug a deadlock when using named pipes on Windows in the new\\n`RawBearer` API.  The API is being used to store secret keys only in memory.\\nThe PR [#4395] is under review.\\n\\nWe also have two more PRs which are under review:\\n\\n* [#4530]: enabling ledger peers on a fixed number of slots before the tip of the chain;\\n* [#4580]: a PR which fixes inconsistencies in one of our cddl specs.\\n\\n[typed-protocols-haddocks]: https://input-output-hk.github.io/typed-protocols/\\n\\n[#40]: https://github.com/input-output-hk/typed-protocols/pull/40\\n[#41]: https://github.com/input-output-hk/typed-protocols/pull/41\\n[#101]: https://github.com/input-output-hk/io-sim/pull/101\\n[#140]: https://github.com/input-output-hk/ouroboros-consensus/pull/140\\n[#3159]: https://github.com/input-output-hk/ouroboros-network/issues/3159\\n[#3596]: https://github.com/input-output-hk/ouroboros-network/issues/3596\\n[#3886]: https://github.com/input-output-hk/ouroboros-network/issues/3886\\n[#4395]: https://github.com/input-output-hk/ouroboros-network/pull/4395\\n[#4530]: https://github.com/input-output-hk/ouroboros-network/issues/4530\\n[#4580]: https://github.com/input-output-hk/ouroboros-network/issues/4580\\n[#4583]: https://github.com/input-output-hk/ouroboros-network/issues/4583\\n[#4589]: https://github.com/input-output-hk/ouroboros-network/pull/4589\\n[#4593]: https://github.com/input-output-hk/ouroboros-network/pull/4593\\n[#5313]: https://github.com/input-output-hk/cardano-node/pull/5313"},{"id":"2023-06-09-crypto","metadata":{"permalink":"/cardano-updates/2023-06-09-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-crypto.md","source":"@site/blog/2023-06-09-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-06-09T00:00:00.000Z","formattedDate":"June 9, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":0.705,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-06-09-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-06-12-network"},"nextItem":{"title":"Developer Experience Update","permalink":"/cardano-updates/2023-06-09-developer-experience"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* cardano-base: E2E tests for BLS bindings and KES agent \\n* Sidechains: Implement ECC chip and Rescue hash primitives for ATMS\\n* mithril: Full node verifier\\n\\n## Low level summary\\n### cardano-base\\n* RawBearer API in ouroboros-network-framework (https://github.com/input-output-hk/ouroboros-network/pull/4395); blocked due to issue with windows\' localSnocket. Trying to resolve.\\n* Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors [#317](https://github.com/input-output-hk/cardano-base/pull/317).\\n* Above, blocked by the simplification of typeclasses [#404](https://github.com/input-output-hk/cardano-base/pull/404).\\n* Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings\\n### Mithril\\n* Implementation of Full Node Verifier [#939](https://github.com/input-output-hk/mithril/pull/939)\\n### Sidechains\\n* [ECC chip](https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc) implemented for JubJub over BLS12-381\\n* [Rescue chip](https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue) implemented for hashing.\\n* Currently working on Schnorr signature (which uses the above constraints)"},{"id":"2023-06-09-developer-experience","metadata":{"permalink":"/cardano-updates/2023-06-09-developer-experience","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-developer-experience.md","source":"@site/blog/2023-06-09-developer-experience.md","title":"Developer Experience Update","description":"High level summary","date":"2023-06-09T00:00:00.000Z","formattedDate":"June 9, 2023","tags":[{"label":"devx","permalink":"/cardano-updates/tags/devx"}],"readingTime":2.035,"hasTruncateMarker":false,"authors":[{"name":"Moritz Angermann","title":"Head of Developer Experience","url":"https://github.com/angerman","imageURL":"https://github.com/angerman.png","key":"angerman"}],"frontMatter":{"title":"Developer Experience Update","slug":"2023-06-09-developer-experience","authors":"angerman","tags":["devx"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-06-09-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-09-hydra"}},"content":"## High level summary\\n\\nThe Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.\\n\\n## Lower level summary\\n\\n### build support & maintainance\\n\\nOur DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure `LoadDLL` errors to `blst` integration across Nix and Github CI. We\'ve also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like [cardano-base](https://github.com/input-output-hk/cardano-base) experiencing significant reductions in CI complexity.\\n\\n### compiler upgrades\\nAfter the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we\'re prioritizing compaining even stronger for better backwards compatibility.\\n\\n### CHaP (cardano-haskell-packages)\\nWe relocated the underlying tooling, ([foliage](https://github.com/input-output-hk/foliage)), for [CHaP](https://github.com/input-output-hk/cardano-haskell-packages) into the IOG organization. Furthermore, we have introduced [improved tooling to quickly add constraints to packages](https://github.com/input-output-hk/cardano-haskell-packages/pull/260), [better error reporting for add-revision](https://github.com/input-output-hk/cardano-haskell-packages/issues/285) and [better hackage url compatibility](https://github.com/input-output-hk/foliage/pull/63) to facilitate easer usage of CHaP.\\n\\n### GitHub Actions\\nOur repository, [input-output-hk/actions](https://github.com/input-output-hk/actions), now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the `base` and `haskell` install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking `cabal`.\\n\\n\\n### iohk-nix\\nThe [iohk-nix](https://github.com/input-output-hk/iohk-nix) repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, `sodium`, `blst`, and `secp256k1`, are also fixed to certain revisions within the `iohk-nix` repository.\\n\\n### haskell.nix\\n[Haskell.nix](https://github.com/input-output-hk/haskell.nix) has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to `gmp`.\\n\\n\\n### devx\\n\\nThe relatively new [devx](https://github.com/input-output-hk/devx) repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The `devx` repository\'s readme has been updated to reflect its purpose and usage guidelines.\\n\\n### upstream tooling\\n\\nOur team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix."},{"id":"2023-06-09-hydra","metadata":{"permalink":"/cardano-updates/2023-06-09-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-09-hydra.md","source":"@site/blog/2023-06-09-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-06-09T00:00:00.000Z","formattedDate":"June 9, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.18,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-06-09-hydra","authors":"ffakenz","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Developer Experience Update","permalink":"/cardano-updates/2023-06-09-developer-experience"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-06-08-db-sync"}},"content":"## High-level summary\\n\\nThis week, the Hydra team worked on multiple fronts. They finished the\\ninvestigation about the broken head on mainnet and re-opened their persistent\\nhead instance. The team also fixed the monthly report publication on their\\nwebsite and started sketching ideas and further improvements. Also, they are on\\nthe last mile to deliver a new feature which will allow parties to commit funds\\nfrom extern wallets. Finally the team started to work on optimizing the\\nperformance on their benchmarks.\\n\\n## What did the team achieve this week\\n\\n-   Finished investigation on broken head on mainnet [#897](https://github.com/input-output-hk/hydra/issues/897) and re-opened it.\\n-   Added support for externally committing regular utxo [#887](https://github.com/input-output-hk/hydra/pull/887)\\n-   Fix monthly report publication on docs website and published the [monthly report](https://hydra.family/head-protocol/monthly/2023-05). Odd problems when publishing monthly report:\\n    +   Make us think about if we should change something about the website [#908](https://github.com/input-output-hk/hydra/issues/908)\\n    +   Open issue to docusaurus [#9036](https://github.com/facebook/docusaurus/issues/9036)\\n-   Fixed a bug in the benchmark process [#910](https://github.com/input-output-hk/hydra/pull/910)\\n-   Explored performance of the `hydra-node`{.verbatim} and identified a\\n    bottleneck.\\n-   Timed transaction feature is being used by the auction project \ud83c\udf89 \\n\\n## What are the goals of next week\\n\\n-   Complete performance analysis and start/plan improvements and provide\\n    regular benchmarks for Hydra [#186](https://github.com/input-output-hk/hydra/issues/186)\\n-   Add hydra as tool to developer platform [#872](https://github.com/input-output-hk/hydra/issues/872).\\n-   Authenticate network messages [#727](https://github.com/input-output-hk/hydra/issues/727).\\n-   Complete journey for external commits using multiple script UTxOs [#903](https://github.com/input-output-hk/hydra/pull/903)\\n-   Start implementing _Option B_ for external commits [#215](https://github.com/input-output-hk/hydra/issues/215)."},{"id":"2023-06-08-db-sync","metadata":{"permalink":"/cardano-updates/2023-06-08-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-db-sync.md","source":"@site/blog/2023-06-08-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-06-08T00:00:00.000Z","formattedDate":"June 8, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.745,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-06-08-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-09-hydra"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-06-08-goedel"}},"content":"## High level summary\\nWe\'ve made progress in all high level objectives\\n- CIP-1694 integration design\\n- UTxO-HD integration proof of concept\\n- schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2\\n- A new hire will help us with devx issues.\\n\\n## Lower level summary\\n- We have an initial design for the Conway integration in db-sync\\n- The initial UTxO-HD integration resulted in a requested feuture that\\nthe consensus team is working on\\n[#88](https://github.com/input-output-hk/ouroboros-consensus/issues/88).\\n- Added two optional migrations that speed up querying UTxO\\n[#1416](https://github.com/input-output-hk/cardano-db-sync/pull/1416)\\n- Work on improving the above feauture by adding tests and fixing tech debt\\n[#1429](https://github.com/input-output-hk/cardano-db-sync/pull/1429)\\n[#1419](https://github.com/input-output-hk/cardano-db-sync/pull/1419)\\n- Fixed issue with ada_pots being wrong\\nhttps://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4\\n- Added a process which fixes in place scripts with wrong CBOR serialisation.\\nhttps://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17\\n- Prepared a tag [`13.1.1.2`](https://github.com/input-output-hk/cardano-db-sync/releases)\\nwhich is tested and ready to release. It contains many of the above."},{"id":"2023-06-08-goedel","metadata":{"permalink":"/cardano-updates/2023-06-08-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-goedel.md","source":"@site/blog/2023-06-08-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-06-08T00:00:00.000Z","formattedDate":"June 8, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.605,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-06-08-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-06-08-db-sync"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-06-08-sre"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on giving and preparing public\\ntalks, also on preparing final versions of their ICE 2023 papers, and\\non analysing chain selection.\\n\\nThis sprint the team has been working on final revisions for the\\npre-proceedings versions of two ICE 2023 papers.\\n\\n## Details\\n\\n* Lambda Days keynote by Kevin Hammond:\\n  https://www.lambdadays.org/lambdadays2023\\n\\n* Codebeam keynote by Peter Van Roy: https://www.youtube.com/watch?v=h8sE3Ai8Dsk; https://www.youtube.com/watch?v=h8sE3Ai8Dsk\\n\\n* Preparing talks and final versions for two ICE 2023 contributions:\\n  https://www.discotec.org/2023/ice\\n\\n* Analysing chain selection.\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/"},{"id":"2023-06-08-sre","metadata":{"permalink":"/cardano-updates/2023-06-08-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-sre.md","source":"@site/blog/2023-06-08-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-06-08T00:00:00.000Z","formattedDate":"June 8, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":1.795,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-06-08-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-06-08-goedel"},"nextItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-06-08-system-test"}},"content":"## High level summary\\n\\nThe SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.\\n\\n## Lower level summary\\n\\n### Bitte\\n\\n- Equinix bare metal capability was added to bitte: [bitte-pull-194](https://github.com/input-output-hk/bitte/pull/194)\\n- Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: [bitte-pull-201](https://github.com/input-output-hk/bitte/pull/201)\\n\\n### Bitte-cells\\n\\n- Improvements made for patroni cluster recovery of large databases: [bitte-cells-branch](https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex)\\n\\n### Cardano-graphql\\n\\n- Update cardano-graphql and nixos service: [cardano-graphql-pull-815](https://github.com/input-output-hk/cardano-graphql/pull/815)\\n\\n### Cardano-node\\n\\n- Update cardano-node to use the updated iohk-nix environments: [cardano-node-pull-5241](https://github.com/input-output-hk/cardano-node/pull/5241)\\n\\n### Cardano-ops\\n\\n- Update cardano-graphql, adds monitoring improvements and misc bug fixes: [cardano-ops-pull-411](https://github.com/input-output-hk/cardano-ops/pull/411)\\n- Work in progress on mixed legacy and p2p topology clusters in cardano-ops: [cardano-ops-branch](https://github.com/input-output-hk/cardano-ops/compare/master...ops-local)\\n\\n### Cardano-world\\n\\n- Add a declarative cardano-faucet dashboard: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a)\\n- Remove a requirement for root user in Nomad docker images: [cardano-world-pull-68](https://github.com/input-output-hk/cardano-world/pull/68)\\n- Enable explorer in cardano-world for high IOPS metal access: [cardano-world-pull-69](https://github.com/input-output-hk/cardano-world/pull/69)\\n- Migrate explorer cluster to cardano-world: [cardano-world-pull-75](https://github.com/input-output-hk/cardano-world/pull/75)\\n- Migrate testnet metadata server to cardano-world, cleanup envs: [cardano-world-pull-77](https://github.com/input-output-hk/cardano-world/pull/77)\\n- Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: [cardano-world-pull-79](https://github.com/input-output-hk/cardano-world/pull/79)\\n- Integrate node 8.x into cardano-world: [cardano-world-pull-84](https://github.com/input-output-hk/cardano-world/pull/84)\\n- Update cardano-world to use iohk-nix for node environments: [cardano-world-pull-87](https://github.com/input-output-hk/cardano-world/pull/87)\\n- Create a stakepool analysis query for cluster pool performance overview: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8)\\n- Added an iptables fixup script for broken bridged networking nomad jobs: [cardano-world-commit](https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50)\\n- Improve cardano-world job automation with additional parameterization: [cardano-world-pr-92](https://github.com/input-output-hk/cardano-world/pull/92)\\n- Update preview network experimental config defaults: [cardano-world-pr-93](https://github.com/input-output-hk/cardano-world/pull/93)\\n\\n### Ci-ops\\n\\n- Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: [ci-ops-pull-108](https://github.com/input-output-hk/ci-ops/pull/108)\\n\\n### Ci-world\\n\\n- Resolve ci-world linux buildkite agent cleanup bug: [ci-world-commit](https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f)\\n- Integrate new darwin builders into ci-world: [ci-world-pull-22](https://github.com/input-output-hk/ci-world/pull/22)\\n- Migrate patroni HA db to it\'s own namespace in ci-world: [ci-world-pull-24](https://github.com/input-output-hk/ci-world/pull/24)\\n\\n### Cicero\\n\\n- Implement a cicero webhook backoff with exponential decay plus jitter: [cicero-pull-79](https://github.com/input-output-hk/cicero/pull/79)\\n\\n### Iohk-nix\\n\\n- Update iohk-nix to be source of truth for node environments: [iohk-nix-pull-534](https://github.com/input-output-hk/iohk-nix/pull/534)\\n- Update preview network experimental config defaults: [iohk-nix-pull-544](https://github.com/input-output-hk/iohk-nix/pull/544)\\n\\n### Openziti\\n\\n- Add darwin intel and arm support to ziti-edge-tunnel nix modules: [openziti-bins-pull-1](https://github.com/johnalotoski/openziti-bins/pull/1)"},{"id":"2023-06-08-system-test","metadata":{"permalink":"/cardano-updates/2023-06-08-system-test","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-08-system-test.md","source":"@site/blog/2023-06-08-system-test.md","title":"System Test Team Update","description":"High level summary","date":"2023-06-08T00:00:00.000Z","formattedDate":"June 8, 2023","tags":[{"label":"system-test","permalink":"/cardano-updates/tags/system-test"}],"readingTime":1.005,"hasTruncateMarker":false,"authors":[{"name":"Martin Kourim","title":"System Test Engineer","url":"https://github.com/mkoura","imageURL":"https://github.com/mkoura.png","key":"mkoura"}],"frontMatter":{"title":"System Test Team Update","slug":"2023-06-08-system-test","authors":"mkoura","tags":["system-test"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-06-08-sre"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-06-07-node-cli-api"}},"content":"## High level summary\\nSince the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the _1.35.7_ and _8.0.0_ releases.\\n\\n## Workstreams\\n\\n[Full list of closed PRs](https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08)\\n\\n### Framework improvements:\\n- Make cardano-submit-api REST API service available and run corresponding regression tests by default\\n- Update cabal build testing for 8.0.0\\n- Add support for testing governance SPO poll\\n- Use Poetry for Python dependency management\\n- Check status of known GH issues during tests runtime and finish the test accordingly\\n- Generate topology files with both IP addresses and DNS names\\n- Log issues like failure to start a cluster instance and report errors during tests runtime\\n\\n### Testing improvements\\n- Add rollback testing:\\n    1. global consensus is reached after rollback, in situation where less than `securityParam` blocks were produced since cluster split\\n    1. global consensus is not reached when more than `securityParam` blocks were produced, and the result is permanent fork\\n- Add tests to governance SPO poll commands\\n\\n### Node:\\n- tested the [1.35.7](https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html) release\\n- tested the [8.0.0](https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html) release\\n\\n### DB-Sync:\\n- improvements in db-sync sync tests\\n- improvements in db-sync functional tests"},{"id":"2023-06-07-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-06-07-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-07-node-cli-api.md","source":"@site/blog/2023-06-07-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-06-07T00:00:00.000Z","formattedDate":"June 7, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.37,"hasTruncateMarker":false,"authors":[{"name":"Carlos LopezDeLara","title":"Node Product Owner","url":"https://github.com/CarlosLopezDeLara","imageURL":"https://github.com/CarlosLopezDeLara.png","key":"carlos"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-06-07-node-cli-api","tags":["cli-api"],"authors":"carlos","hide_table_of_contents":false},"prevItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-06-08-system-test"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-02-hydra"}},"content":"# 2023-06-07 - 2023-06-20\\n\\n## High level summary\\n\\n* Completed cardano-cli migration to input-output-hk/cardano-cli\\n* cardano-cli ping now uses cardano-ping-0.2.0.5\\n* New queries on API:\\n  * `queryCurrentEpochState`\\n  * `queryDebugLedgerState`\\n  * `queryGenesisParameters`\\n  * `queryPoolDistribution`\\n  * `queryPoolState`\\n  * `queryProtocolParameters`\\n  * `queryProtocolParametersUpdate`\\n  * `queryProtocolState`\\n  * `queryStakeAddresses`\\n  * `queryStakeDistribution`\\n  * `queryStakePoolParameters`\\n  * `queryStakeSnapshot`\\n* Deprecate:\\n  * `queryPparams`\\n* Export query API as functions\\n  * `genFeatureValueInEra`\\n  * `featureInShelleyBasedEra`\\n  * `isFeatureValue`\\n  * `valueOrDefault`\\n  * `asFeatureValue`\\n  * `asFeatureValueInShelleyBasedEra`\\n  * `queryEpoch`\\n  * `requireShelleyBasedEra`\\n* Restructure cardano-testnet (WIP)\\n____\\n\\n### cardano-cli\\n\\n- [update network dependency and versions](https://github.com/input-output-hk/cardano-node/pull/5328)\\n- [Updated cardano-cli to use `cardano-ping-0.2.0.5`.](https://github.com/input-output-hk/cardano-node/pull/5326)\\n- [Use `cardano-cli` from CHaP](https://github.com/input-output-hk/cardano-node/pull/5316)\\n- [Add `--conway-era` flag](https://github.com/input-output-hk/cardano-node/pull/5315)\\n- [Updated cardano-cli ping command](https://github.com/input-output-hk/cardano-node/pull/5313)\\n- [Add `--conway-era` flag](https://github.com/input-output-hk/cardano-node/pull/5311)\\n\\n- [Use cardano-ping-0.2.0.5](https://github.com/input-output-hk/cardano-cli/pull/30)\\n- [Deprecate `--protocol-params-file` option of the `transaction build` command more thoroughly](https://github.com/input-output-hk/cardano-cli/pull/28)\\n- [New `Cardano.Api.Query.Expr` module](https://github.com/input-output-hk/cardano-cli/pull/25)\\n- [Use simplified `queryStateForBalancedTx`](https://github.com/input-output-hk/cardano-cli/pull/24)\\n- [Add `--conway-era` flag](https://github.com/input-output-hk/cardano-cli/pull/20)\\n\\n\\n### cardano-api\\n\\n- [New version `cardano-api-8.5.2.0`](https://github.com/input-output-hk/cardano-api/pull/59)\\n- [New `requireShelleyBasedEra` function](https://github.com/input-output-hk/cardano-api/pull/58)\\n- [New version cardano-api-8.5.1.0](https://github.com/input-output-hk/cardano-api/pull/57)\\n- [New `queryEpoch` function](https://github.com/input-output-hk/cardano-api/pull/56)\\n- [New version 8.5.0.0](https://github.com/input-output-hk/cardano-api/pull/55)\\n- [Error on `hlint` warnings in CI](https://github.com/input-output-hk/cardano-api/pull/54)\\n- [Additional query expression functions](https://github.com/input-output-hk/cardano-api/pull/53)\\n- [New version `cardano-api-8.4.0.0`](https://github.com/input-output-hk/cardano-api/pull/52)\\n- [New version `cardano-api-8.3.0.0`](https://github.com/input-output-hk/cardano-api/pull/49)\\n- [New `Cardano.Api.Query.Expr` module](https://github.com/input-output-hk/cardano-api/pull/48)\\n- [Simplify `queryStateForBalancedTx`](https://github.com/input-output-hk/cardano-api/pull/47)\\n- [Revert to use `testProperty` now that it isn\'t deprecated anymore](https://github.com/input-output-hk/cardano-api/pull/46)\\n\\n### cardano-node\\n\\n- [cardano-node 8.1.1 release](https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1)\\n- [update network dependency and versions](https://github.com/input-output-hk/cardano-node/pull/5328)\\n\\n### cardano-testnet\\n\\n- [Add ability to retry tests with DISABLE_RETRIES=1](https://github.com/input-output-hk/cardano-node/pull/5340)\\n- [Move golden files to proper location](https://github.com/input-output-hk/cardano-node/pull/5339)\\n- [Conway testnet](https://github.com/input-output-hk/cardano-node/pull/5336)\\n- [Don\'t retry testnet when failed](https://github.com/input-output-hk/cardano-node/pull/5335)\\n- [Remove YAML filepath record from data Conf](https://github.com/input-output-hk/cardano-node/pull/5321)\\n- [Add `--conway-era` flag](https://github.com/input-output-hk/cardano-node/pull/5315)\\n- [Add `--conway-era` flag](https://github.com/input-output-hk/cardano-node/pull/5311)\\n- [Remove duplicate --testnet-magic flag](https://github.com/input-output-hk/cardano-node/pull/5309)\\n- [Restructure cardano testnet ](https://github.com/input-output-hk/cardano-node/pull/5307)\\n\\n### docs\\n\\n### CI & project maintenance\\n\\n- [Fix Windows CI issues](https://github.com/input-output-hk/cardano-cli/pull/18)"},{"id":"2023-06-02-hydra","metadata":{"permalink":"/cardano-updates/2023-06-02-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-02-hydra.md","source":"@site/blog/2023-06-02-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-06-02T00:00:00.000Z","formattedDate":"June 2, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.215,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-06-02-hydra","authors":"ffakenz","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-06-07-node-cli-api"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-01-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has put their effort on finding solutions on many\\ndifferent problems, such as our broken head on mainnet\\n[#897](https://github.com/input-output-hk/hydra/issues/897), our fragile monthly\\nreport publications on the website and implementing &ldquo;Option A&rdquo; for\\nexternal commits [#215](https://github.com/input-output-hk/hydra/issues/215).\\nAlthough most of these items are still open, huge progress has been made. To\\naccelerate the investigation, they improved their logging to give more precise\\nerrors when a transition requirement fails, and to reduce duplication on effets\\nlogged content. Last but not least, the team is exploring formal methods and\\nattended a workshop on formalizing cryptographic protocols in Agda.\\n\\n\\n## What did the team achieve this week\\n\\n-   Continued investigating broken head and opened an issue to keep track [#897](https://github.com/input-output-hk/hydra/issues/897).\\n    \\n    As part of this issue, improvements were made to the node logs:\\n\\n    +   Give a precise error when a transition requirement fails [#895](https://github.com/input-output-hk/hydra/pull/895).\\n\\n    +   Reduce duplication for effects logged content by using sequential eventId and effectId pair  [#896](https://github.com/input-output-hk/hydra/pull/896).\\n\\n-   Fixed references in the hydra specification [#893](https://github.com/input-output-hk/hydra/pull/893).\\n\\n-   Attended a workshop on formal methods and crypto in Agda.\\n\\n## What are the goals of next week\\n\\n-   Investigate and re-open our team-internal head on mainnet.\\n-   Improve and provide regular benchmarks for Hydra [#186](https://github.com/input-output-hk/hydra/issues/186).\\n-   Complete journey for external commits implementing &ldquo;Option A&rdquo; and start implementing &ldquo;Option B&rdquo; [#215](https://github.com/input-output-hk/hydra/issues/215).\\n-   Authenticate network messages [#727](https://github.com/input-output-hk/hydra/issues/727).\\n-   Add hydra as tool to developr platform [#872](https://github.com/input-output-hk/hydra/issues/872).\\n-   Fix monthly report publication on docs website."},{"id":"2023-06-01-mithril","metadata":{"permalink":"/cardano-updates/2023-06-01-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-06-01-mithril.md","source":"@site/blog/2023-06-01-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-06-01T00:00:00.000Z","formattedDate":"June 1, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.415,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-06-01-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-06-02-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-31-consensus"}},"content":"## High level overview\\nThe Mithril team released a new [`2321.1`](https://github.com/input-output-hk/mithril/releases/tag/2321.1) distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.\\n\\nFinally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.\\n\\n## Low level overview\\n- Released the new distribution [`2321.1`](https://github.com/input-output-hk/mithril/releases/tag/2321.1)\\n- Worked on the epic that designs and implements generic signing/verification of entity services [#780](https://github.com/input-output-hk/mithril/issues/780):\\n  - Completed the issue `Enhance MessageAdapter for Artifact in aggregator REST API` [#925](https://github.com/input-output-hk/mithril/issues/925)\\n  - Completed the issue `Create the sub-command for \'Cardano Immutable Files Full\' in client` [#895](https://github.com/input-output-hk/mithril/issues/895)\\n  - Completed the issue `Enhance state machines Aggregator/Signer` [#933](https://github.com/input-output-hk/mithril/issues/933)\\n  - Completed the issue `Adapt the aggregator REST API to list certificates` [#892](https://github.com/input-output-hk/mithril/issues/892)\\n  - Worked on the issue `Adapt end to end tests to handle new types of data` [#899](https://github.com/input-output-hk/mithril/issues/899)\\n  - Worked on the issue `Update client documentation` [#897](https://github.com/input-output-hk/mithril/issues/897)\\n  - Worked on the issue `Update architecture documentations for new types of data` [#898](https://github.com/input-output-hk/mithril/issues/898)\\n- Worked on the epic that prepares the Mithril infrastructure for `mainnet` [#767](https://github.com/input-output-hk/mithril/issues/767):\\n  - Worked on the issue `Enhance terraform infrastructure` [#930](https://github.com/input-output-hk/mithril/issues/930)\\n- Worked on the epic that implements the computation of the stake distribution for `mainnet` [#880](https://github.com/input-output-hk/mithril/issues/880):\\n  - Completed the issue `Upgrade Cardano node to \'8.0.0\'` [#920](https://github.com/input-output-hk/mithril/issues/920)\\n- Completed the issue `Add export path in Client CLI` [#512](https://github.com/input-output-hk/mithril/issues/512)"},{"id":"2023-05-31-consensus","metadata":{"permalink":"/cardano-updates/2023-05-31-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-31-consensus.md","source":"@site/blog/2023-05-31-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-05-31T00:00:00.000Z","formattedDate":"May 31, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.825,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-05-31-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-06-01-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-31-performance-and-tracing"}},"content":"## High level summary\\n\\nDuring the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network\'s ledger-peer selection (see [this issue](https://github.com/input-output-hk/ouroboros-consensus/issues/101)). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.\\n\\nOn the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.\\n\\n## UTxO-HD\\n\\n- We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking `SOP` classes like `HPure` and `HAp` . In short, we implement generalised versions of important classes like `Applicative` and `Traversable`.\\n\\n## Support\\n\\n- `fs-sim-0.1.0.2` and `fs-api-0.1.0.2` were released, which makes them now compatible with GHC up to `9.6`.\\n- `ouroboros-consensus-0.7.0.0` was released for `cardano-node` `8.1`, including query serialization fixes for backwards compatibility."},{"id":"2023-05-31-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-05-31-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-31-performance-and-tracing.md","source":"@site/blog/2023-05-31-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-05-31T00:00:00.000Z","formattedDate":"May 31, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.055,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-05-31-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-31-consensus"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-05-26-goedel"}},"content":"## High level summary\\n\\n* Benchmarking: We\'ve performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.\\n* New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.\\n* Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.\\n\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nThe first set of runs with GHC9.2 as a build platform are in. We\'ve discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build\\nconfiguration: As it stands, the `ghc-bignum` package is using the Haskell `native-backend` as a default. We strive\\nto benchmark a build with the `gmp-backend` next.  \\n\\nA variant of our `forge-stress` local benchmark has been set up to serve as an early indicator for the resource usage profile\\nwe\'d expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way\\nshorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great\\nsupport when evaluating different compiler versions or RTS flags incrementally.\\n\\n### Tracing\\n\\nThe hub of the new tracing system `cardano-tracer` is designed with a fixed output behaviour, which is limited to various\\nlogging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to \\ndirectly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.\\n\\n\\n### Nomad backend\\nWe\'re currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with\\njob definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing\\nbenchmarking run required us to fine-tune communications with the nomad server.  \\n\\nRelated to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible\\nand offers more detailed insight than the previous iteration in `cardano-ops`. The backend will enable you to formulate\\nvery specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met."},{"id":"2023-05-26-goedel","metadata":{"permalink":"/cardano-updates/2023-05-26-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-goedel.md","source":"@site/blog/2023-05-26-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-05-26T00:00:00.000Z","formattedDate":"May 26, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.39,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-05-26-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-31-performance-and-tracing"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-26-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on final revisions for the\\npre-proceedings versions of two ICE 2023 papers.\\n\\n## Details\\n\\n* Porting Ouroboros Praos formalisation to new application layer.\\n\\n* Preparing pre-proceedings version of two ICE 2023 papers.\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/"},{"id":"2023-05-26-hydra","metadata":{"permalink":"/cardano-updates/2023-05-26-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-hydra.md","source":"@site/blog/2023-05-26-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-05-26T00:00:00.000Z","formattedDate":"May 26, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.11,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-05-26-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-05-26-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-05-26-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team accomplished several important tasks. They held their\\nmonthly review meeting and drafted the report for May. They made progress on\\nimplementing the first end-to-end journey for external commits using \\"Option A\\"\\nfor normal UTxOs, while still considering \\"Option B\\". The team also integrated a\\nSpanish translation contributed by the community, created micro-benchmarks for\\ntransaction validation and deserialization, and made improvements to\\nhydra-node\'s version reporting. Last but not least, they implemented the ability\\nto commit multiple UTxOs to a head at once.\\n\\n## What did the team achieve this week\\n\\n-   Held the monthly review meeting ([recording](https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view) + [slides](https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA)) & drafted the report for May.\\n-   Have a first end-to-end journey for external commits implementing &ldquo;Option A&rdquo;\\n    for normal UTxOs [#887](https://github.com/input-output-hk/hydra/pull/887) (still considering &ldquo;Option B&rdquo;).\\n-   Integrated the spanish translation [#866](https://github.com/input-output-hk/hydra/pull/866).\\n-   Created micro-benchmarks for transaction validation and deserialization [#884](https://github.com/input-output-hk/hydra/pull/884).\\n-   Improve hydra-node &#x2013;version reporting on non-released builds [#849](https://github.com/input-output-hk/hydra/issues/849)\\n-   Some minor CI improvements following up last weeks changes.\\n-   Allow commit transactions with multiple UTxO [#774](https://github.com/input-output-hk/hydra/pull/774).\\n\\n## What are the goals of next week\\n\\n-   Investigate and re-open our team-internal head on mainnet.\\n-   Improve and provide regular benchmarks for Hydra [#186](https://github.com/input-output-hk/hydra/issues/186).\\n-   Complete external commits with script UTxOs [#215](https://github.com/input-output-hk/hydra/issues/215).\\n-   Authenticate network messages [#727](https://github.com/input-output-hk/hydra/issues/727).\\n-   Add hydra as tool to developr platform [#872](https://github.com/input-output-hk/hydra/issues/872)."},{"id":"2023-05-26-ledger","metadata":{"permalink":"/cardano-updates/2023-05-26-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-ledger.md","source":"@site/blog/2023-05-26-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-05-26T00:00:00.000Z","formattedDate":"May 26, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.565,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-05-26-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-26-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-05-26-network"}},"content":"## High level summary\\n\\nThe ledger team made progress on the conway ledger era. In particular, the design and implementation\\nof the new certificates is near complete, we refactored some of our data structures\\nto be able to support DReps, we cleaned up the serialization format, and renamed things to make\\nclearer the differences with Shelley.\\n\\nThe team also completed integration work for the next node release, namely 8.1.0.\\nAnd, as always, we continue to address technical debt.\\n\\n## Low level summary\\n\\n### Conway progress\\n\\n- [pull-3408] - Improve conway delegation certificates\\n- [pull-3428] - Get rid of Constitutional in favor of Genesis and Committee\\n- [pull-3426] - Add DRep to internal data struture (UMap)\\n- [pull-3425] - Improve witness logic needed for conway\\n- [pull-3423] - Rename ShelleyDelegCerts constructors to distinguish them from Conway\\n- [pull-3421] - Rename DCert -> TxCert\\n- [pull-3454] - conway CDDL minor fixes\\n\\n### Improve testing\\n\\n- [pull-3403] - Add Plutus script context golden tests\\n\\n### Integration work\\n\\n- [pull-3410] - Update chaps index\\n- [pull-3416] - Bump cardano-ledger-alonzo-test version\\n- [pull-3414] - Bump cardano-ledger-shelley-test minor version\\n- [pull-3420] - Bump cardano-ledger-shelley-ma-test version\\n- [pull-3441] - Release cardano-ledger-[alonzo|babbage]-1.2.1\\n\\n### Technical debt\\n\\n- [pull-3409] -  Unit test - no such thing as a reference datum\\n- [pull-3407] -  Fixup release process documentation\\n- [pull-3404] -  Create TotalDeposits events during all eras\\n- [pull-3402] -  Fix broken references in the Shelley spec\\n- [pull-3424] -  Remove no longer used cardano-ledger-shelley-ma package\\n- [pull-3432] -  Add an example on how to bump up versions in the changelog \\n- [pull-3440] -  Revert back to the group serialization for ProtVer for PParams \\n\\n[pull-3409]: https://github.com/input-output-hk/cardano-ledger/pull/3409\\n[pull-3408]: https://github.com/input-output-hk/cardano-ledger/pull/3408\\n[pull-3407]: https://github.com/input-output-hk/cardano-ledger/pull/3407\\n[pull-3404]: https://github.com/input-output-hk/cardano-ledger/pull/3404\\n[pull-3403]: https://github.com/input-output-hk/cardano-ledger/pull/3403\\n[pull-3402]: https://github.com/input-output-hk/cardano-ledger/pull/3402\\n[pull-3410]: https://github.com/input-output-hk/cardano-ledger/pull/3410\\n[pull-3416]: https://github.com/input-output-hk/cardano-ledger/pull/3416\\n[pull-3414]: https://github.com/input-output-hk/cardano-ledger/pull/3414\\n[pull-3428]: https://github.com/input-output-hk/cardano-ledger/pull/3428\\n[pull-3426]: https://github.com/input-output-hk/cardano-ledger/pull/3426\\n[pull-3425]: https://github.com/input-output-hk/cardano-ledger/pull/3425\\n[pull-3424]: https://github.com/input-output-hk/cardano-ledger/pull/3424\\n[pull-3423]: https://github.com/input-output-hk/cardano-ledger/pull/3423\\n[pull-3421]: https://github.com/input-output-hk/cardano-ledger/pull/3421\\n[pull-3420]: https://github.com/input-output-hk/cardano-ledger/pull/3420\\n[pull-3432]: https://github.com/input-output-hk/cardano-ledger/pull/3432\\n[pull-3454]: https://github.com/input-output-hk/cardano-ledger/pull/3454\\n[pull-3441]: https://github.com/input-output-hk/cardano-ledger/pull/3441\\n[pull-3440]: https://github.com/input-output-hk/cardano-ledger/pull/3440"},{"id":"2023-05-26-network","metadata":{"permalink":"/cardano-updates/2023-05-26-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-26-network.md","source":"@site/blog/2023-05-26-network.md","title":"Network Team Update","description":"High level summary","date":"2023-05-26T00:00:00.000Z","formattedDate":"May 26, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":0.515,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-05-26-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-05-26-ledger"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-05-24-node-cli-api"}},"content":"## High level summary\\n\\nWe continued working on `eclipse-evasion`.  We also analysed and fixed a bug\\nwhen using DNS names in local root peers.  We continued working on engineering\\nblog post about P2P. We released a new version of packages for\\n`cardano-node-8.1.0` release.\\n\\nWe improved our CI, removed obsolete scripts add extra validation which checks\\nif `CHANGELOG.md` files were updated.\\n\\nWe also improved release scripts.\\n\\n## Detailed summary\\n\\n* Eclipse evasion: [#4462]\\n* Local root peers bug fix: [#4559]\\n* Release to CHaP: [#4573]\\n* CI improvements: [#4572]\\n* Release script improvements: [#4573]\\n\\n[#4462]: https://github.com/input-output-hk/ouroboros-network/pull/4462\\n[#4558]: https://github.com/input-output-hk/ouroboros-network/pull/4558\\n[#4559]: https://github.com/input-output-hk/ouroboros-network/pull/4559\\n[#4572]: https://github.com/input-output-hk/ouroboros-network/pull/4572\\n[#4573]: https://github.com/input-output-hk/ouroboros-network/pull/4573"},{"id":"2023-05-24-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-05-24-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-24-node-cli-api.md","source":"@site/blog/2023-05-24-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-05-24T00:00:00.000Z","formattedDate":"May 24, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-05-24-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-05-26-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-19-hydra"}},"content":"# 2023-05-24 - 2023-06-06\\n\\n## High level summary\\n- The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. \\n- We provided assitance where needed in the release\\n- An integration repository https://github.com/input-output-hk/fusion-flamingo was created to enable my team to more easily work on cardano-cli and cardano-api\\n\\n### docs\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Update `cardano-cli` changelog](https://github.com/input-output-hk/cardano-node/pull/5290) \\n- [Propagate protocol parameters conversion errors](https://github.com/input-output-hk/cardano-node/pull/5197) \\n- [Command line option for parsing UTC time to slot number](https://github.com/input-output-hk/cardano-node/pull/5149) \\n\\n### cardano-api\\n- [Switch to `tasty-discover`](https://github.com/input-output-hk/cardano-api/pull/31) \\n- [Move tests to standard locations](https://github.com/input-output-hk/cardano-api/pull/30) \\n- [Make cardano-api:internal component public](https://github.com/input-output-hk/cardano-api/pull/26) \\n- [update chaps index](https://github.com/input-output-hk/cardano-api/pull/24) \\n- [Make `ErrorSpec` check for all constructors, move golden tests together](https://github.com/input-output-hk/cardano-api/pull/18) \\n- [Expose toAlonzoCostModels](https://github.com/input-output-hk/cardano-api/pull/17) \\n- [Make `ErrorsSpec`  use generated types and constructors names](https://github.com/input-output-hk/cardano-api/pull/9) \\n- [Check changelog in tag script](https://github.com/input-output-hk/cardano-api/pull/32) \\n- [Use tag script from `cardano-dev` repository instead](https://github.com/input-output-hk/cardano-api/pull/34) \\n- [Use .x suffix for release branches](https://github.com/input-output-hk/cardano-api/pull/38) \\n\\n### cardano-node\\n- [Use `cryptoInit` instead of `sodiumInit`](https://github.com/input-output-hk/cardano-node/pull/5291) \\n- [Move configuration tests to `cardano-node` tests](https://github.com/input-output-hk/cardano-node/pull/5284) \\n- [update chaps & integration](https://github.com/input-output-hk/cardano-node/pull/5243) \\n- [#5222 Remove `ApplicationName` and `ApplicationVersion` config parameters](https://github.com/input-output-hk/cardano-node/pull/5240) \\n\\n### cardano-testnet"},{"id":"2023-05-19-hydra","metadata":{"permalink":"/cardano-updates/2023-05-19-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-19-hydra.md","source":"@site/blog/2023-05-19-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-05-19T00:00:00.000Z","formattedDate":"May 19, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.045,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-05-19-hydra","authors":"ffakenz","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-05-24-node-cli-api"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-17-consensus"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the \\"Coding Standards\\" for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.\\n\\n## What did the team achieve this week\\n\\n-   Complete validation of timed transactions feature [#196](https://github.com/input-output-hk/hydra/issues/196).\\n-   Write &ldquo;ops&rdquo; instructions and troubleshooting [#569](https://github.com/input-output-hk/hydra/issues/569) and improve logs.\\n-   Remove `--ledger-genesis` argument to hydra-node options [#863](https://github.com/input-output-hk/hydra/pull/863).\\n-   Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows [#877](https://github.com/input-output-hk/hydra/pull/877).\\n-   Use nix to build test binaries to increase CI speed [#867](https://github.com/input-output-hk/hydra/pull/867).\\n-   Updated our [Coding Standards](https://github.com/input-output-hk/hydra/wiki/Coding-Standards).\\n\\n## What are the goals of next week\\n\\n-   Monthly report & review meeting.\\n-   Have a first end-to-end journey for external commits implementing \\"Option A\\" [#215](https://github.com/input-output-hk/hydra/issues/215).\\n-   Integrate spanish translation [#866](https://github.com/input-output-hk/hydra/pull/866).\\n-   Improve and provide regular benchmarks for Hydra [#186](https://github.com/input-output-hk/hydra/issues/186).\\n-   Allow commit transactions with multiple UTxO [#774](https://github.com/input-output-hk/hydra/pull/774).\\n-   Explored stateless observation and refined hydra explorer ticket [#696](https://github.com/input-output-hk/hydra/issues/696)."},{"id":"2023-05-17-consensus","metadata":{"permalink":"/cardano-updates/2023-05-17-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-consensus.md","source":"@site/blog/2023-05-17-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-05-17T00:00:00.000Z","formattedDate":"May 17, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.285,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-05-17-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-19-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-05-17-mithril"}},"content":"## High level summary\\n\\nDuring the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the [Genesis][#genesis] section for more details.\\n\\nRegarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our `main` branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.\\n\\nWe improved our tooling by releasing an [immutable DB server](https://github.com/input-output-hk/ouroboros-consensus/pull/68), which can be used for testing and benchmarking purposes, and a [`db-truncater`](https://github.com/input-output-hk/ouroboros-consensus/pull/70) program, which can be used in disaster recovery and benchmarking scenarios.\\n\\n## Genesis \\n\\nThe consensus team working on Genesis:\\n\\n- Improved the genesis selection rule as a result of our interaction with IO Research.\\n- Studied how the hard-fork combinator handles forecasting at era transitions, and [improved our documentation](https://github.com/input-output-hk/ouroboros-consensus/pull/89).\\n- Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.\\n- Elaborated concrete proposal for the Genesis State Machine.\\n- Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it\'s similar to the Genesis State Machine).\\n\\nThe team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we\'ve re-introduced the Genesis State Machine."},{"id":"2023-05-17-mithril","metadata":{"permalink":"/cardano-updates/2023-05-17-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-mithril.md","source":"@site/blog/2023-05-17-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-05-17T00:00:00.000Z","formattedDate":"May 17, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.555,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-05-17-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-17-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-17-performance-and-tracing"}},"content":"## High level overview\\nThe Mithril team released a new [`2318.0`](https://github.com/input-output-hk/mithril/releases/tag/2318.0) distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.\\n\\nFinally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node `8.0.0` (along with the backward compatibility for previous `1.35.x` versions).\\n\\n## Low level overview\\n- Worked on the epic that designs and implements generic signing/verification of entity services [#780](https://github.com/input-output-hk/mithril/issues/780):\\n  - Completed the handling of multiple types of signed entity in the aggregator runtime [#907](https://github.com/input-output-hk/mithril/issues/907)\\n  - Completed the adaptation of the signer runtime to use the signable builder service [#854](https://github.com/input-output-hk/mithril/issues/854)\\n  - Completed the adaptation of the aggregator runtime to use the artifact builder service [#869](https://github.com/input-output-hk/mithril/issues/869)\\n  - Completed the appending of the next AVK to all protocol messages [#888](https://github.com/input-output-hk/mithril/issues/888)\\n  - Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced [#893](https://github.com/input-output-hk/mithril/issues/893)\\n  - Completed the adaptation of the explorer to handle new artifact routes of the aggregator [#927](https://github.com/input-output-hk/mithril/issues/927)\\n- Worked on the epic that implements the computation of the stake distribution for `mainnet` [#880](https://github.com/input-output-hk/mithril/issues/880):\\n  - Completed the implementation of the new stake distribution computation in the chain observer [#919](https://github.com/input-output-hk/mithril/issues/919)\\n  - Worked on upgrading the Cardano node to `8.0.0` [#920](https://github.com/input-output-hk/mithril/issues/920)"},{"id":"2023-05-17-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-05-17-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-17-performance-and-tracing.md","source":"@site/blog/2023-05-17-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-05-17T00:00:00.000Z","formattedDate":"May 17, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":3.21,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-05-17-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-05-17-mithril"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-05-12-crypto"}},"content":"## High level summary\\n\\n* Benchmarking: We\'re preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.\\n* New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.\\n* Analysis pipeline: First steps on implementing incremental analysis have been untertaken.\\n* Open Sourcing: Exhaustive dataflow charts for both our analysis tool `locli` and our `workbanch` have been merged to `master`\\n* Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we\'re porting the definition of our model cluster.\\n* P&T Meetup: We had a very productive personal meetup in Lugano, Switzerland.\\n* Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we\'re busy with the handover.\\n\\n## Low level overview\\n\\n### Benchmarking\\n\\nAs a compiler switch to GHC 9.2.7 for `cardano-node`\'s default build environment is around the corner, we\'re setting up our benchmarking cluster to\\nhandle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This\\nalso involves choosing a reliable baseline as reference point for inter-version comparisons.  \\n\\nAdditionally we\'ve been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,\\nwe strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to\\nbe balanced against resource demand for all our cluster\'s nodes.\\n\\n### Tracing\\n\\nFor our new tracing system, we\'re currently validating the behaviour of the system after optimizations have been applied. Furthermore, some\\nquality-of-life details that have changed required us to revision the system documentation.\\n\\n### Analysis\\n\\nAs a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been\\nnormally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a\\nhuge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. \\n\\n### Open Sourcing\\n\\nA very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking\\ncopmonents more accessible. As a result, detailed charts for both our LogObject CLI `locli` and our `workbench` have been merged to `master`. \\n\\n### Nomad backend\\nWhile our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we\'ve been adjusting\\nthose profiles of our `workbench` that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality\\nof the nomad cloud backend.  \\n\\nAdditionally, we\'re porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.\\n\\n### Performance & Tracing Meetup\\n\\nWe held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive\\ndays together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.\\nAlso, it was a great opportunity to finally meet in person.\\n\\n### Offboarding\\n\\nLast not least we regret that our team lead is leaving at the end of May. Currently, he\'s handing over all his obligations, which requires reorganisation\\nof team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!"},{"id":"2023-05-12-crypto","metadata":{"permalink":"/cardano-updates/2023-05-12-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-crypto.md","source":"@site/blog/2023-05-12-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-05-12T00:00:00.000Z","formattedDate":"May 12, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.095,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-05-12-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-17-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-05-12-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. \\n* Sidechains: Implement BLS and JubJub using upstream\'s macros to merge these curves in halo2curves.\\n## Low level summary\\n### cardano-base\\n* RawBearer API in ouroboros-network-framework (https://github.com/input-output-hk/ouroboros-network/pull/4395); this is needed for KES Agent. Review ongoing.\\n* Facilitate BLS test vectors in Haskell test suite (https://github.com/input-output-hk/cardano-base/pull/408)\\n* Add the SignKeyWithKES type to cardano-base (https://github.com/input-output-hk/cardano-base/pull/389)\\n* Restructuring and simplifying the MLocking code in cardano-base (https://github.com/input-output-hk/cardano-base/pull/404, https://github.com/input-output-hk/cardano-base/pull/405), getting rid of the purpose-built MonadMLock etc. typeclasses in the process\\n* Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (https://github.com/input-output-hk/cardano-base/pull/411)\\n* Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: https://github.com/input-output-hk/cardano-base/pull/411).\\n* Update CIP-0381 with new plutus built-in functions, [#506](https://github.com/cardano-foundation/CIPs/pull/506). In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. \\n### Sidechains\\n* Opened PR in halo2curves to include BLS12-381 and JubJub, [#38](https://github.com/privacy-scaling-explorations/halo2curves/pull/38)\\n* Addition constraint over JubJub merged [#10](https://github.com/input-output-hk/sidechains-zk/pull/10)"},{"id":"2023-05-12-goedel","metadata":{"permalink":"/cardano-updates/2023-05-12-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-goedel.md","source":"@site/blog/2023-05-12-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-05-12T00:00:00.000Z","formattedDate":"May 12, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.445,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-05-12-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-05-12-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-12-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team had two paper accepted for ICE 2023\\n(https://www.discotec.org/2023/ice). The event will be held in Lisbon\\non 19th June 2023. The papers will be published in EPTCS.\\n\\n## Details\\n\\n* Application layer for Praos formalisation in review.\\n\\n* Participating in interactive peer review process for ICE 2023.\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/"},{"id":"2023-05-12-hydra","metadata":{"permalink":"/cardano-updates/2023-05-12-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-hydra.md","source":"@site/blog/2023-05-12-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-05-12T00:00:00.000Z","formattedDate":"May 12, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.145,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-05-12-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-05-12-goedel"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-05-12-network"}},"content":"## High-level summary\\n\\nThis week, the Hydra team achieved a number of milestones, including the release\\nof the first mainnet compatible version. Besides this they also addressed\\ninconsistencies in rollback handling, added an architecture page to the website,\\nreducing the size of logs using event IDs. They also had productive discussions\\nwith researchers on plans for incremental commits/decommits and had a whiteboard\\nsession on DeFi and lending protocols. The goals for next week include\\ncompleting the validation of the timed transactions feature, exploring stateless\\nobservation, refining the Hydra explorer ticket, writing ops instructions and\\ntroubleshooting, and implementing the first end-to-end journey for external\\ncommits.\\n\\n## What did the team achieve this week\\n\\n-   Released first mainnnet compatible version [0.10.0](https://github.com/input-output-hk/hydra/releases/tag/0.10.0)\\n-   Addressed inconsist handling of rollbacks [#784](https://github.com/input-output-hk/hydra/issues/784)\\n-   Added [architecture page](https://hydra.family/head-protocol/core-concepts/architecture/) and fixed haddock links on our website [#838](https://github.com/input-output-hk/hydra/pull/838)\\n-   Opened a new hydra head on mainnet\\n-   Talked with researchers on initial plan for incremental commits/decommits\\n-   Had a Whiteboard session on DeFi and lending protocols\\n-   Reduced size of logs using event ids [#859](https://github.com/input-output-hk/hydra/pull/859)\\n-   Published the [monthly report for April](https://hydra.family/head-protocol/monthly/2023-04)\\n\\n## What are the goals of next week\\n\\n-   Complete validation of timed transactions feature [#196](https://github.com/input-output-hk/hydra/issues/196)\\n-   Explored stateless observation and refined hydra explorer ticket [#696](https://github.com/input-output-hk/hydra/issues/696)\\n-   Write &ldquo;ops&rdquo; instructions and troubleshooting [#569](https://github.com/input-output-hk/hydra/issues/569) and improve logs\\n-   Have a first end-to-end journey for external commits implemented [#215](https://github.com/input-output-hk/hydra/issues/215)"},{"id":"2023-05-12-network","metadata":{"permalink":"/cardano-updates/2023-05-12-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-12-network.md","source":"@site/blog/2023-05-12-network.md","title":"Network Team Update","description":"High level summary","date":"2023-05-12T00:00:00.000Z","formattedDate":"May 12, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.79,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-05-12-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-05-12-hydra"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-05-05-ledger"}},"content":"## High level summary\\n\\nWe started working on a new way to switch between root & ledger peers (see\\nbelow).  We continued to work on `eclipse-evasion`.  We merged changes to\\nHandshake contributed by Galois Inc.  We made improvements to our tests (fixed\\na flaky test, added cddl specs for `NodeToNodeVersionData` and\\n`NodeToClientVersionData`).  We improved our CI and automated the process of\\nreleasing new package version to `CHaP`.\\n\\n## Detailed summary\\n\\nWe continued to work on testing `eclipse-evasion`.\\n\\nWe came up with an idea to limit how full node wallets relay on root peers\\n(currently operated by IOG, in future also CF and Emurgo).  We designed\\na switch to use ledger peers if the node tip is close enough to the current\\ntime.  For more details see [#4530].\\n\\nWe merged changes to the handshake mini-protocol which allow one to query\\nserver\'s `node-to-node` / `node-to-client` parameters.  We are grateful to\\nGalois Inc. for implementing it, [#4256] and [#4538].  We published new version\\nof packages to CHaP [chap-#253].\\n\\nWe added `DiffusionError` wrapper.  Thanks to it, `ouroboros-consensus` will\\nnot duplicate diffusion errors messages in the log, [#4537].\\n\\nWe fixed an issue which caused one of our tests to be flaky, [#4515].\\n\\nWe added cddl tests for `NodeToNodeVersionData` and `NodeToClientVersionData`:\\n[#4540], [#4544] (in review).\\n\\nWe wrote scripts which will help us release packages as well as verify that we\\nreleased all the package necessary to build the newest set of packages,\\n[#4542].\\n\\nWe renamed the consensus startup tracer and make sure it doesn\'t log\\n`ExitSuccess` exceptions, [consensus-#71].\\n\\nWe reviewed PR which adds `RawBearer` API, [#4395].\\n\\nWe made series of improvements to our CI:\\n* [#4539]: we don\'t need to install cryptographic libraries in CI;\\n* [#4545]: Javier Sagredo (consensus) cleaned up CI after `consensus` moved\\n  to a new repo;\\n* [#4546]: we switched to use [GitHub merge queues][mq];\\n* [#4549]: we made it possible to trigger building haddocks manually;\\n* [#4553]: we fixed and enhanced caching of building dependencies.\\n\\n[#4256]: https://github.com/input-output-hk/ouroboros-network/issues/4256\\n[#4395]: https://github.com/input-output-hk/ouroboros-network/issues/4395\\n[#4515]: https://github.com/input-output-hk/ouroboros-network/issues/4515\\n[#4530]: https://github.com/input-output-hk/ouroboros-network/issues/4530\\n[#4537]: https://github.com/input-output-hk/ouroboros-network/issues/4537\\n[#4538]: https://github.com/input-output-hk/ouroboros-network/issues/4538\\n[#4539]: https://github.com/input-output-hk/ouroboros-network/issues/4539\\n[#4540]: https://github.com/input-output-hk/ouroboros-network/issues/4540\\n[#4542]: https://github.com/input-output-hk/ouroboros-network/issues/4542\\n[#4544]: https://github.com/input-output-hk/ouroboros-network/issues/4544\\n[#4545]: https://github.com/input-output-hk/ouroboros-network/issues/4545\\n[#4546]: https://github.com/input-output-hk/ouroboros-network/issues/4546\\n[#4549]: https://github.com/input-output-hk/ouroboros-network/issues/4549\\n[#4553]: https://github.com/input-output-hk/ouroboros-network/issues/4553\\n\\n[chap-#253]: https://github.com/input-output-hk/cardano-haskell-packages/pull/253\\n\\n[consensus-#71]: https://github.com/input-output-hk/ouroboros-consensus/pulls/71\\n\\n[mq]: https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue"},{"id":"2023-05-05-ledger","metadata":{"permalink":"/cardano-updates/2023-05-05-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-05-ledger.md","source":"@site/blog/2023-05-05-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-05-05T00:00:00.000Z","formattedDate":"May 5, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.235,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-05-05-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-05-12-network"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-05-05-node-cli-api"}},"content":"## High level summary\\n\\nThe ledger team focused mainly on the conway ledger era and node integration.\\nFor conway, we completed a large structural change that now allows\\nfor delegation certificates to be parameterized by era, and introducing\\nnew certificates for the first time since Shelley.\\nWe also continue to build out our contraint based generators that we will\\nuse to property test the conway era.\\nIn particular, we can now generate an entire ledger state and a\\ntransaction which is balanced with respect to the ledger state.\\n\\n## Low level summary\\n\\n## Conway certificates\\n\\nCertificiates are now abstracted as a type family in the ledger codebase.\\nMoreover, there are new certificates in the Conway era to support CIP-1694,\\nand MIR certificates have been removed.\\n\\n* [pull-3387]\\n\\n## Constraint based testing\\n\\nOur plan for property testing in the conway era is to no longer use the trace generators,\\nbut instead generate ledger states and transactions based on constraints.\\nWe hit a milestone this week, namely the ability to generate a balanced transaction in the context\\nof a ledger state, all based on our ever growing constaint language.\\n\\n* [pull-3374]\\n* [pull-3386]\\n\\n## Integration work\\n\\n* [pull-3393] - Performance improvements\\n* [pull-3395] - Conway instances\\n* [pull-3398] - Fix mint translation in the script context\\n\\n## Technical debt\\n\\n* [pull-3389] - Reduce github pages size\\n* [pull-3390] - Reinstate the tickf optimizations\\n\\n[pull-3374]: https://github.com/input-output-hk/cardano-ledger/pull/3374\\n[pull-3398]: https://github.com/input-output-hk/cardano-ledger/pull/3398\\n[pull-3395]: https://github.com/input-output-hk/cardano-ledger/pull/3395\\n[pull-3393]: https://github.com/input-output-hk/cardano-ledger/pull/3393\\n[pull-3390]: https://github.com/input-output-hk/cardano-ledger/pull/3390\\n[pull-3389]: https://github.com/input-output-hk/cardano-ledger/pull/3389\\n[pull-3386]: https://github.com/input-output-hk/cardano-ledger/pull/3386\\n[pull-3387]: https://github.com/input-output-hk/cardano-ledger/pull/3387"},{"id":"2023-05-05-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-05-05-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-05-node-cli-api.md","source":"@site/blog/2023-05-05-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-05-05T00:00:00.000Z","formattedDate":"May 5, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.81,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-05-05-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-05-05-ledger"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-05-04-mithril"}},"content":"# 2023-05-05 - 2023-05-23\\n\\n## High level summary\\n- Golden tests for cardano-cli command help output were added.\\n- Documentation was updated with new libsodium installation instructions.\\n- There were several updates for the cardano-cli:\\n    - Deletion of the deprecated shelley command group.\\n    - Addition of golden tests for CLI help.\\n    - An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.\\n    - Generation of UTCTime test values without leap seconds (avoids erroneous test failures)\\n    - Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.\\n- The cardano-api underwent multiple refinements:\\n    - Implementing deposit handling when balancing transactions (necessary for Conway)\\n    - Cleaning up socket file path code.\\n- Several changes were made to the cardano-testnet:\\n    - Adding golden tests for cardano-testnet help.\\n    - Removing all hardcoded yaml files in cardano-testnet\\n    - Improving cardano-testnet help output.\\n    - Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.\\n\\n### docs\\n- [Update libsodium installation instructions](https://github.com/input-output-hk/cardano-node/pull/5181) \\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Delete deprecated `shelley` command group](https://github.com/input-output-hk/cardano-node/pull/5264) \\n- [Add golden tests for CLI help](https://github.com/input-output-hk/cardano-node/pull/5206) \\n- [Avoid bare IO in tests](https://github.com/input-output-hk/cardano-node/pull/5201) \\n- [Split `cardano-cli` test files into separate directories](https://github.com/input-output-hk/cardano-node/pull/5200) \\n- [Make UTCTime test generator generate values without leap seconds](https://github.com/input-output-hk/cardano-node/pull/5198) \\n- [Add support with signing transactions with `GenesisDelegateSigningKey_ed25519_bip32`](https://github.com/input-output-hk/cardano-node/pull/5189) \\n- [Rename --signed-tx-file argument to --tx-file argument in verify-poll command](https://github.com/input-output-hk/cardano-node/pull/5184) \\n- [Simplify socket path code](https://github.com/input-output-hk/cardano-node/pull/5120) \\n\\n### cardano-api\\n- [refactor: make renderScriptWitnessIndex output more explicit](https://github.com/input-output-hk/cardano-node/pull/5221) \\n- [Implement deposit handling when balancing transactions](https://github.com/input-output-hk/cardano-node/pull/5218) \\n- [Replace remaining `FilePath` use in `cardano-api`](https://github.com/input-output-hk/cardano-node/pull/5217) \\n- [Cleanup socket file path code](https://github.com/input-output-hk/cardano-node/pull/5215) \\n- [Delete `readEnvSocketPath` function](https://github.com/input-output-hk/cardano-node/pull/5207) \\n- [IO functions for reading. Remove PoolMetadataFile type](https://github.com/input-output-hk/cardano-node/pull/5194) \\n- [Expose config reader](https://github.com/input-output-hk/cardano-node/pull/5191) \\n- [Golden tests for `cardano-api` errors](https://github.com/input-output-hk/cardano-node/pull/5188) \\n- [Fix `toEraInMode` for conway](https://github.com/input-output-hk/cardano-node/pull/5175) \\n- [Use machine readable output for ToJSON ScriptWitnessIndex](https://github.com/input-output-hk/cardano-node/pull/5168) \\n- [Expose LocalTxSubmissionClient data constructor](https://github.com/input-output-hk/cardano-node/pull/5096) \\n- [Use cardano-api from separate repository](https://github.com/input-output-hk/cardano-node/pull/5047) \\n- [[cardano-api] Export fromConsensusPointHF](https://github.com/input-output-hk/cardano-node/pull/4684) \\n\\n### cardano-node\\n- [Provide orphan `ToJSON` instances for `HardForkNodeToClientVersion` and `HardForkNodeToNodeVersion`](https://github.com/input-output-hk/cardano-node/pull/5022) \\n\\n### cardano-testnet\\n- [Add golden test for `cardano-testnet` help](https://github.com/input-output-hk/cardano-node/pull/5254) \\n- [Remove all hardcoded yaml files from cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/5242) \\n- [Fix cardano-testnet help](https://github.com/input-output-hk/cardano-node/pull/5234) \\n- [Parameterize default yaml configuration value in cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/5211) \\n- [Freeze callstack in integration and integrationRetryWorkspace functions](https://github.com/input-output-hk/cardano-node/pull/5165) \\n- [Create defaultYamlValue for cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/5128)"},{"id":"2023-05-04-mithril","metadata":{"permalink":"/cardano-updates/2023-05-04-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-04-mithril.md","source":"@site/blog/2023-05-04-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-05-04T00:00:00.000Z","formattedDate":"May 4, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.56,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-05-04-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-05-05-node-cli-api"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-03-consensus"}},"content":"## High level overview\\nThe Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version `1.35.7`.\\n\\nFinally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.\\n\\n## Low level overview\\n- Worked on the epic that designs and implements generic signing/verification of entity services [#780](https://github.com/input-output-hk/mithril/issues/780):\\n  - Completed the implementation of the `Certifier` service in the aggregator [#850](https://github.com/input-output-hk/mithril/issues/850)\\n  - Completed the implementation of the signable builder for the `Mithril Stake Distribution` [#851](https://github.com/input-output-hk/mithril/issues/851)\\n  - Completed the implementation of the artifact builder for the `Mithril Stake Distribution` [#870](https://github.com/input-output-hk/mithril/issues/870)\\n  - Completed the implementation of the signable builder for the `Full Immutables Snapshot` [#852](https://github.com/input-output-hk/mithril/issues/852)\\n  - Completed the implementation of the artifact builder for the `Full Immutables Snapshot` [#871](https://github.com/input-output-hk/mithril/issues/871)\\n  - Completed the adaptation of the aggregator runtime to use the signable builder service [#853](https://github.com/input-output-hk/mithril/issues/853)\\n  - Worked on the adaptation of the signer runtime to use the signable builder service [#854](https://github.com/input-output-hk/mithril/issues/854)\\n  - Completed the definition of the entity service interface for verification/restoration [#868](https://github.com/input-output-hk/mithril/issues/868)\\n  - Completed the refactoring of the `OpenMessage` type [#878](https://github.com/input-output-hk/mithril/issues/878)\\n- Completed the epic that simplifies the multi-signer in the aggregator [#398](https://github.com/input-output-hk/mithril/issues/398):\\n  - Completed the extraction of the single signature registration from the multi-signer [#643](https://github.com/input-output-hk/mithril/issues/643)\\n- Completed the upgrade of the Cardano node to version `1.35.7` [#881](https://github.com/input-output-hk/mithril/issues/881)\\n- Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators [#873](https://github.com/input-output-hk/mithril/issues/873)"},{"id":"2023-05-03-consensus","metadata":{"permalink":"/cardano-updates/2023-05-03-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-03-consensus.md","source":"@site/blog/2023-05-03-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-05-03T00:00:00.000Z","formattedDate":"May 3, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.755,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-05-03-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-05-04-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-03-performance-and-tracing"}},"content":"## High level summary\\n\\nDuring the past two weeks we made some important progress in the Genesis design.\\nIt seems the `BlockFetch` logic need not be modified for Genesis, although this\\nneeds to be confirmed. We started a DoS mitigation handbook and updated our\\nconceptual component diagram to guide the Genesis design. We engaged with the\\nIOG researchers to work on the Limit on Patience attack vector, work in this\\narea is still ongoing. We sketched a design to decouple the CPU load of the node\\nfrom its responsiveness to the socket. Finally, we discussed with Networking our\\napproach to lower the performance impact of the BlockFetch decision logic, and\\ngot green light from them.\\n\\nWe migrated the consensus code to a [new\\nrepository](https://github.com/input-output-hk/ouroboros-consensus), splitting\\nit from the `ouroboros-network` repository, and released version 0.6 of\\nConsensus.\\n\\nWe also merged the mempool fairness improvement to main branch.\\n\\nAnother significant enhancement to our documentation was the addition of an\\nexplanation of the hardfork combinator forecast horizon.\\n\\nSee the sections below for more details.\\n\\n## Genesis\\n\\nWe reviewed the `BlockFetch` design documentation, and added some source-code\\ncomments that emphasize certain properties of the decisions the `BlockFetch`\\nlogic makes that are helping us confirm that Genesis does not require any\\nchanges to `BlockFetch`. We are waiting on input from our former system\\narchitect to verify this.\\n\\nWe migrated and updated the conceptual component diagram in the `ouroboros-consensus`\\nrepository which helps us situate the Genesis design and argument.\\n\\nWe engaged with the IOG researchers about the Genesis design. We sketched out a\\nway to address the concern that the Limit on Patiente (LoP) attack vector duty\\ncycle is indeed low, but it\'s still non-trivial to ultimately conclude it\'s\\nsufficiently low.\\n\\nWe also sketched a design to decouple the CPU load of the node from its\\nresponsiveness to the socket, since the LoP is a relatively tight timeout, and\\nnode performance bugs inducing seconds-worth of latency are unfortunately\\nfamiliar phenomena.\\n\\n## Fostering collaboration\\n\\nWe [added an\\nexplanation](https://github.com/input-output-hk/ouroboros-consensus/pull/62) of\\na question that we had to explain many times about the exact behavior of the\\nhardfork combinator forecast horizon."},{"id":"2023-05-03-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-05-03-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-03-performance-and-tracing.md","source":"@site/blog/2023-05-03-performance-and-tracing.md","title":"Performance & tracing update","description":"* Benchmarking: The benchmarks and performance investigations for the new 8.0 release branch are ongoing.","date":"2023-05-03T00:00:00.000Z","formattedDate":"May 3, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.76,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-05-03-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-05-03-consensus"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-05-01-db-sync"}},"content":"* Benchmarking: The benchmarks and performance investigations for the new `8.0` release branch are ongoing.\\n* New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.\\n* Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.\\n* Infrastructure: The `plutus-apps` flake input for `cardano-node` has finally been removed.\\n* Nomad backend: A PR implementing placement of benchmarking clusters has been merged.\\n  \\n# Benchmarking\\n\\nThe performance investigations on the `8.0` release branch have lead to pinpointing and addressing incosistent behaviour. For that,\\nwe created yet another local reproduction with the workbench\'s `forge-stress` benchmark.  \\n\\nCurrently we\'re working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into `8.0` and\\nsubsequent releases.  \\n\\nAdditionally, we\'ve refined the `trace-bench` family of profiles that target benchmarking our own new tracing system. \\n\\n# Tracing\\n\\nOptimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally\\nintended to run on a performance-critical codepath. We\'ve worked on improving those, as well as eliminating cases of redundant\\nconversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.\\n\\n# Infrastructure & Analysis\\n\\n### Dataflow documentation\\nThe LogObject CLI `locli` is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate\\nfurther development, we\'re creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. \\n\\n### Remove redundant Plutus flake input\\nThis step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,\\nwe simplify the dependency graph for `cardano-node`, as well as enable immediate feedback when developing Plutus benchmarks.\\n\\n### Nomad backend\\nSophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.\\nThis capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along\\nwith various quality-of-life improvements, has been merged to `master`."},{"id":"2023-05-01-db-sync","metadata":{"permalink":"/cardano-updates/2023-05-01-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-05-01-db-sync.md","source":"@site/blog/2023-05-01-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-05-01T00:00:00.000Z","formattedDate":"May 1, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.515,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-05-01-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-05-03-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-04-28-crypto"}},"content":"## High level summary\\n\\n\\n\\n## Lower level summary\\n- Prepared a schema change which is expected to speed up queries and help clients\\n[#1389](https://github.com/input-output-hk/cardano-db-sync/pull/1389).\\n- Ran a big number of benchmarks on the above to evaluate if this change is reasonable.\\n- Performance optimization related to rewards\\n[#1382](https://github.com/input-output-hk/cardano-db-sync/pull/1382)\\n- Using the cache in more places to reduce recourses usage\\n[#1380](https://github.com/input-output-hk/cardano-db-sync/pull/1380)\\n- Evaluated risks related to UTXO-HD integration\\n- Worked on a feauture request to split the `tx_out` to an address table\\n[#1396](https://github.com/input-output-hk/cardano-db-sync/pull/1396)\\n- Worked on another feauture request to prune the consumed entries from the `tx_out` table\\n[#1398](https://github.com/input-output-hk/cardano-db-sync/pull/1398)\\n- Prepared for CIP-1694 integration"},{"id":"2023-04-28-crypto","metadata":{"permalink":"/cardano-updates/2023-04-28-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-crypto.md","source":"@site/blog/2023-04-28-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-04-28T00:00:00.000Z","formattedDate":"April 28, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.26,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-04-28-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-05-01-db-sync"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-04-28-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto\'s library.\\n* KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.\\n* Sidechains: Started implementing ECC chip of JubJub over BLS12-381.\\n## Low level summary\\n### cardano-base\\n* [#255](https://github.com/input-output-hk/cardano-base/pull/255) finally merged :tada:\\n* Additional tests for BLS bindings [#384](https://github.com/input-output-hk/cardano-base/pull/384)\\n* Open PR for including test vectors created with [zkscrypto](https://github.com/zkcrypto/bls12_381)\'s library, [PR#397](https://github.com/input-output-hk/cardano-base/pull/397)\\n### KES agent\\n* Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period [PR#389](https://github.com/input-output-hk/cardano-base/pull/389).\\n* Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) [#317](https://github.com/input-output-hk/cardano-base/pull/317).\\n* Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim\\n* Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes\\n* Refactor MonadSodium into MonadMLock [PR#388](https://github.com/input-output-hk/cardano-base/pull/388).\\n### Sidechains\\n* Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)\\n* Use macros used by PSE library to try and merge our fork of halo2curves into PSE\'s repo"},{"id":"2023-04-28-goedel","metadata":{"permalink":"/cardano-updates/2023-04-28-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-goedel.md","source":"@site/blog/2023-04-28-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-04-28T00:00:00.000Z","formattedDate":"April 28, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.375,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-04-28-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-04-28-crypto"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-04-28-network"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThe team is working on porting an existing formalisation of Ouroboros\\nPraos to a newer foundation.\\n\\n## Details\\n\\n* The team worked on documentation.\\n\\n* The team worked on an application layer for the Praos formalisation.\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/"},{"id":"2023-04-28-network","metadata":{"permalink":"/cardano-updates/2023-04-28-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-28-network.md","source":"@site/blog/2023-04-28-network.md","title":"Network Team Update","description":"High level summary","date":"2023-04-28T00:00:00.000Z","formattedDate":"April 28, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.21,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-04-28-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-04-28-goedel"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-27-hydra"}},"content":"## High level summary\\n\\nThe networking team has released the following packages to `Hackage`:\\n\\n* [`io-classes`],\\n* [`io-classes-mtl`]\\n* [`io-sim`],\\n* [`strict-stm`],\\n* [`strict-mvar`]\\n\\nWe published an announcement [blog post][io-sim-blog-post].  We made progress\\nalso on another blog post which will describes the design of the P2P networking\\nlayer.\\n\\nAfter moving `ouroboros-consensus` to its own repository, we made\\n`ouroboros-network` compatible with `GHC` `9.4` and `9.6`.\\n\\nWe made `cardano-client` library independent of\\n`ouroboros-consensus-diffusion`.\\n\\nWe prepared release of network packages for `cardano-node-8.0`.\\n\\n## Detailed log\\n\\n### Ouroboros-Network\\n\\n* Compatibility with `io-classes-1.1.0.0`: [ouroboros-network#4281].\\n* Compatibility with `GHC` `9.4` and `9.6`: [ouroboros-network#4527].\\n* `cardano-client` independent of `ouroboros-cosnensus-diffusion`: [ouroboros-network#4526].\\n* Release new versions of packages for `cardano-node-8.0`: [ouroboros-network#4532].\\n* Galois Inc, has been making progress towards merging [ouroboros-network#4256].\\n\\n### IO-Sim\\n\\n* `io-classes-1.0.0.0`, and following up releases: `1.0.0.1` (`ghc-9.6`\\n  support), `1.1.0.0` (documentation fix).\\n* Fixed timeouts and delays in `io-sim` in a series of PRs: [io-sim#81],\\n  [io-sim#82], [io-sim#86], [io-sim#87].\\n* Renamed a module: [io-sim#88].\\n* Fixed a failing `registerDelayCancellable` test: [io-sim#80].\\n* Use GitHub merge queue in `io-sim` repository.\\n* CI: download `stylish-haskell`: [io-sim#83].\\n\\n### Typed Protocols\\n\\n* Released `typed-protocols-0.1.0.4` which support `io-classes-1.1.0.0`:\\n  [typed-protocols#227].\\n* Use GitHub merge queue in `typed-protocols`: [typed-protocols#30].\\n* CI: download `stylish-haskell`: [typed-protocols#29].\\n\\n\\n[`io-classes`]: https://hackage.haskell.org/package/io-classes\\n[`io-classes-mtl`]: https://hackage.haskell.org/package/io-classes-mtl\\n[`io-sim`]: https://hackage.haskell.org/package/io-sim\\n[`strict-stm`]: https://hackage.haskell.org/package/strict-stm\\n[`strict-mvar`]: https://hackage.haskell.org/package/strict-mvar\\n[io-sim-blog-post]: https://engineering.iog.io/2023-04-14-io-sim-annoucement\\n\\n[io-sim#81]: https://github.com/input-output-hk/io-sim/pull/81\\n[io-sim#82]: https://github.com/input-output-hk/io-sim/pull/82\\n[io-sim#83]: https://github.com/input-output-hk/io-sim/pull/83\\n[io-sim#86]: https://github.com/input-output-hk/io-sim/pull/86\\n[io-sim#87]: https://github.com/input-output-hk/io-sim/pull/87\\n[io-sim#88]: https://github.com/input-output-hk/io-sim/pull/88\\n[io-sim#90]: https://github.com/input-output-hk/io-sim/pull/90\\n\\n[ouroboros-network#4256]: https://github.com/input-output-hk/ouroboros-network/pull/4256\\n[ouroboros-network#4281]: https://github.com/input-output-hk/ouroboros-network/pull/4281\\n[ouroboros-network#4526]: https://github.com/input-output-hk/ouroboros-network/pull/4526\\n[ouroboros-network#4527]: https://github.com/input-output-hk/ouroboros-network/pull/4527\\n[ouroboros-network#4532]: https://github.com/input-output-hk/ouroboros-network/pull/4532\\n\\n[typed-protocols#29]: https://github.com/input-output-hk/typed-protocols/pull/29\\n[typed-protocols#30]: https://github.com/input-output-hk/typed-protocols/pull/30\\n[typed-protocols#227]: https://github.com/input-output-hk/cardano-haskell-packages/pull/227"},{"id":"2023-04-27-hydra","metadata":{"permalink":"/cardano-updates/2023-04-27-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-27-hydra.md","source":"@site/blog/2023-04-27-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-04-27T00:00:00.000Z","formattedDate":"April 27, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.11,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-04-27-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-04-28-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-21-hydra"}},"content":"## High-level summary\\n\\nThis week, the Hydra team held their Monthly review meeting and drafted the\\nreport which likely is published next week. They put the spec into the\\nrepository and website, addressed a user issue and fixed the TUI peer list.\\nFurthermore, they updated dependencies, conducted a Twitter space on Auctions\\nuse cases, covered the rollback bug with tests and implemented a solution.\\nLooking ahead, their goals for next week include releasing 0.10.0, implementing\\ntimed transactions support, writing a Query API ADR, and grooming work items\\nlike off-chain benchmarks.\\n\\n## What did the team achieve this week\\n\\n-   Held the Monthly review meeting and drafted the report (to be published next week)\\n-   Added the spec into the repository\\n    [#693](https://github.com/input-output-hk/hydra/issues/693) and published on\\n    [the\\n    website](https://hydra.family/head-protocol/unstable/core-concepts/specification)\\n-   Groom and addressed user issue [#823](https://github.com/input-output-hk/hydra/issues/823)\\n-   Covered the rollback bug with tests and implemented a solution (to be reviewed) [#784](https://github.com/input-output-hk/hydra/issues/784)\\n-   Fixed the TUI peer list\\n-   Updated dependencies to match `cardano-node` master\\n-   Conducted a twitter space on Auctions use cases\\n\\n## What are the goals of next week\\n\\n-   Release 0.10.0\\n-   Support timed transactions solution drafted and validated API with users\\n-   Write Query API ADR and groom a concrete step\\n-   Groom and solve `PostTxOnChainFailed` UX problem [#832](https://github.com/input-output-hk/hydra/issues/832)\\n-   Groom off-chain benchmarks idea [#186](https://github.com/input-output-hk/hydra/issues/186) and turn it into a &ldquo;feature&rdquo;"},{"id":"2023-04-21-hydra","metadata":{"permalink":"/cardano-updates/2023-04-21-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-21-hydra.md","source":"@site/blog/2023-04-21-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-04-21T00:00:00.000Z","formattedDate":"April 21, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.26,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-04-21-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-27-hydra"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-04-21-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team worked on several fronts, including fixing state\\nmachine continuity on-chain, discussing voting project solutions, exploring\\nadding Hydra support to kupo, and improving API navigation with a sidebar. The\\nteam also updated dependencies and fixed issues in their test suites. Moving\\nforward, the team plans to hold the next monthly review meeting, address a user\\nissue, prepare for the 0.10.0 release, and work on a dirt road fix for the\\nrollbacks issue with proper test coverage.\\n\\n## What did the team achieve this week\\n\\n-   Fixed scripts to enforce state machine continuity on-chain [#777](https://github.com/input-output-hk/hydra/pull/777).\\n-   Took part in a twitter space on [&ldquo;Scaling Cardano&rdquo;](https://twitter.com/thepizzaknight_/status/1647833904282320896).\\n-   Joined a CBIA meeting to discuss Cardano network protocols & how to specify them.\\n-   Discussed potential solutions of ensuring vote uniqueness in the voting project.\\n-   Updated dependencies to match `cardano-node` master to prepare for upcoming releases and hard-forks\\n-   Explored adding Hydra [support to kupo](https://github.com/CardanoSolutions/kupo/pull/117), a lightweight Cardano chain indexer - some more work required.\\n-   Improved navigation of the API Reference with a sidebar, see [unstable API version](https://hydra.family/head-protocol/unstable/api-reference/).\\n-   Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)\\n\\n## What are the goals of next week\\n\\n-   Monthly review meeting (join via [Discord](https://discord.gg/inputoutput?event=1097863746216538194) or [AddEvent](https://www.addevent.com/event/ck16794110)) & report\\n-   Dirt road fix for rollbacks [#784](https://github.com/input-output-hk/hydra/issues/784) properly covered by a test.\\n-   Groom and ideally address user issue [#823](https://github.com/input-output-hk/hydra/issues/823).\\n-   Put the spec into the repo [#693](https://github.com/input-output-hk/hydra/issues/693) and prepare release 0.10.0."},{"id":"2023-04-21-ledger","metadata":{"permalink":"/cardano-updates/2023-04-21-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-21-ledger.md","source":"@site/blog/2023-04-21-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-04-21T00:00:00.000Z","formattedDate":"April 21, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":0.905,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-04-21-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-21-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-04-20-mithril"}},"content":"## High level summary\\n\\nWe continued to make progress on CIP-1694 and the conway ledger era.\\nIn particular, the conway era now supports Plutus V3.\\nFinally, we made small improvements to the ledger API and now host\\nour Haskell code documentation (haddocks) on github pages.\\n\\n\\n## Low level summary\\n\\n### Conway ledger era\\n\\n* [[pull-3365]] - Support for Plutus V3.\\n* [[pull-3368]] - Conway genesis fix.\\n* [[pull-3369]] - Added some governance ledger state.\\n* [[pull-3372]] - Work on the conway delegation certificates.\\n* [[pull-3384]] - Rename.\\n\\n### Haddocks hosted on github pages\\n\\n* [[pull-3385]] \\n\\n### Small improvements to the API\\n\\n* [[pull-3366]]\\n\\n### Technical Debt\\n\\n* [[pull-3367]] Fix cost model json instances.\\n* [[pull-3371]] UMap cleanup.\\n* [[pull-3373]] Upgrade to ghc 9.2.7 and cabal 3.10.1.\\n* [[pull-3375]] Sadly, we had to revert the `TICKF` optimizations. There was a regression we do not yet understand.\\n* [[pull-3377]] Fix cabal warnings.\\n* [[pull-3383]] Fix multi-asset test.\\n\\n[pull-3365]: https://github.com/input-output-hk/cardano-ledger/pull/3365\\n[pull-3366]: https://github.com/input-output-hk/cardano-ledger/pull/3366\\n[pull-3367]: https://github.com/input-output-hk/cardano-ledger/pull/3367\\n[pull-3368]: https://github.com/input-output-hk/cardano-ledger/pull/3368\\n[pull-3369]: https://github.com/input-output-hk/cardano-ledger/pull/3369\\n[pull-3371]: https://github.com/input-output-hk/cardano-ledger/pull/3371\\n[pull-3372]: https://github.com/input-output-hk/cardano-ledger/pull/3372\\n[pull-3373]: https://github.com/input-output-hk/cardano-ledger/pull/3373\\n[pull-3375]: https://github.com/input-output-hk/cardano-ledger/pull/3375\\n[pull-3377]: https://github.com/input-output-hk/cardano-ledger/pull/3377\\n[pull-3383]: https://github.com/input-output-hk/cardano-ledger/pull/3383\\n[pull-3384]: https://github.com/input-output-hk/cardano-ledger/pull/3384\\n[pull-3385]: https://github.com/input-output-hk/cardano-ledger/pull/3385"},{"id":"2023-04-20-mithril","metadata":{"permalink":"/cardano-updates/2023-04-20-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-20-mithril.md","source":"@site/blog/2023-04-20-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-04-20T00:00:00.000Z","formattedDate":"April 20, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.245,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-04-20-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-04-21-ledger"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-04-20-node-cli-api"}},"content":"## High level overview\\nThe Mithril team released a new [`2315.0`](https://github.com/input-output-hk/mithril/releases/tag/2315.0) distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.\\n\\nFinally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.\\n\\n\\n## Low level overview\\n- Released the new distribution [`2315.0`](https://github.com/input-output-hk/mithril/releases/tag/2315.0)\\n- Completed the epic that implements a relational store in the aggregator [#779](https://github.com/input-output-hk/mithril/issues/779):\\n  - Completed the migration/adaptation of the `signed_entity` table [#816](https://github.com/input-output-hk/mithril/issues/816)\\n  - Completed the creation of the `signer` table [#814](https://github.com/input-output-hk/mithril/issues/814)\\n  - Completed the migration/adaptation of the `single_signature` table [#829](https://github.com/input-output-hk/mithril/issues/829)\\n- Worked on the epic that designs and implement generic signing/verification of entity services [#780](https://github.com/input-output-hk/mithril/issues/780):\\n  - Completed the definition of the interface of the generic entity service for signing [#847](https://github.com/input-output-hk/mithril/issues/847)\\n  - Worked on the implementation of the `Certifier` service in the aggregator [#850](https://github.com/input-output-hk/mithril/issues/850)\\n  - Completed the extension of the `SignedEntityType` type [#848](https://github.com/input-output-hk/mithril/issues/848)\\n  - Completed the implementation of the `Tick` service in the aggregator [#849](https://github.com/input-output-hk/mithril/issues/849)\\n  - Worked on implementing the signable builder for the `Mithril Stake Distribution` [#851](https://github.com/input-output-hk/mithril/issues/851)"},{"id":"2023-04-20-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-04-20-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-20-node-cli-api.md","source":"@site/blog/2023-04-20-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-04-20T00:00:00.000Z","formattedDate":"April 20, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":0.4,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-04-20-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-04-20-mithril"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-04-19-consensus"}},"content":"# 2023-04-20 - 2023-05-04\\n\\n## High level summary\\n- Various fixes and improvements\\n\\n### docs\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Modify golden test functions to automatically create parent directories](https://github.com/input-output-hk/cardano-node/pull/5136) \\n- [SPO on-chain poll commands adjustments](https://github.com/input-output-hk/cardano-node/pull/5132) \\n- [New environment variable CARDANO_NODE_NETWORK_ID](https://github.com/input-output-hk/cardano-node/pull/5119) \\n\\n### cardano-api\\n- [`--out-file` option for governance commands](https://github.com/input-output-hk/cardano-node/pull/5172) \\n- [UTC Time to slots conversion function](https://github.com/input-output-hk/cardano-node/pull/5130) \\n\\n### cardano-node\\n- [Update CHaP to get latest ledger with performance fix](https://github.com/input-output-hk/cardano-node/pull/5157) \\n- [Integration with Peer Sharing](https://github.com/input-output-hk/cardano-node/pull/4854) \\n\\n### cardano-testnet"},{"id":"2023-04-19-consensus","metadata":{"permalink":"/cardano-updates/2023-04-19-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-19-consensus.md","source":"@site/blog/2023-04-19-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-04-19T00:00:00.000Z","formattedDate":"April 19, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.77,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-04-19-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-04-20-node-cli-api"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-04-19-performance-and-tracing"}},"content":"## High level summary\\n\\nThis week the consensus team continued working on the improved DB lock mechanism\\nfor UTxO-HD, and modifications to the mempool benchmarks that this prototype\\nrequires.\\n\\nOn the Genesis front we validated that the fragment size calculation in\\n`BlockFetch` is a major performance sink for ChainSync Jumping. By removing it\\nwe will get performance that is acceptably close to that of the baseline. We\\nalso started investigating a performance fix that does not alter the existing\\nbaseline behavior too much. In addition we reviewed our Genesis attack vector\\ncalculations.\\n\\nOn the support front we released Consensus 0.4, and we are working on improving\\nour release process, to support the Cardano-wide efforts in this area. We also\\nperformed an analysis on the number of file descriptors that consensus use. This\\ninformation can be used by the node operators to check if the number of file\\ndescriptors they want to support are enough."},{"id":"2023-04-19-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-04-19-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-19-performance-and-tracing.md","source":"@site/blog/2023-04-19-performance-and-tracing.md","title":"Performance & tracing update","description":"* Benchmarking: We performed a series of benchmarks aimed at the new 8.0 release branch and built a timeline from the 1.35 releases to that branch.","date":"2023-04-19T00:00:00.000Z","formattedDate":"April 19, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.575,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-04-19-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-04-19-consensus"},"nextItem":{"title":"Incident Report","permalink":"/cardano-updates/2023-04-17-ledger"}},"content":"* Benchmarking: We performed a series of benchmarks aimed at the new `8.0` release branch and built a timeline from the `1.35` releases to that branch.\\n* New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.\\n* Analysis pipeline: We\'re working on automatically obtaining a detailed manifest for each run.\\n* Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we\'ve laid the ground for including GHC profiling data into our workbench.\\n* Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.\\n  \\n# Benchmarking\\n\\nWe have performed various cluster runs targeting the `8.0` release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile `epoch-transition` for local reproduction of what we observed on the benchmarking cluster.  \\n\\nFurthermore, we bridged the gap between the run data from the `1.35.x` releases to the the new `8.0.x` release branch. This included walking the\\n`master` branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial\\nin locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of\\nbenchmarks.\\n\\n# Tracing\\n\\nIn-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still\\nongoing.  \\n\\nIn coordination with Galois, who are developing a system assurance service by observing a number of `cardano-node`s, we\'re working with the implementation\\nof data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational\\nburden inside the node needs to be kept to an absolute minimum. We\'re currently in ideation about whether `cardano-tracer` could be extended with a richer\\nfeature set to that end.\\n\\n# Infrastructure & Analysis\\n\\n### Detailed manifest\\nA run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.\\nThese dependencies come from different package sources, have different versioning policies, and an identical package version might provide different\\nperformance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated\\nby making all component bumps visible and accessible.\\n\\n### GHC profiling inside workbench\\nThe workbench has been equipped with a new `-profnix` profile flavour. This enforces a `-fprof-auto` build for all node-related packages. The type of\\nprofiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already\\nbeen merged to `master`.\\n\\n### Nomad backend\\nThe added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.\\nThis results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing."},{"id":"2023-04-17-ledger","metadata":{"permalink":"/cardano-updates/2023-04-17-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-17-incident.md","source":"@site/blog/2023-04-17-incident.md","title":"Incident Report","description":"Incident reporting: Cardano block production temporary outage","date":"2023-04-17T00:00:00.000Z","formattedDate":"April 17, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.38,"hasTruncateMarker":false,"authors":[{"name":"Kevin Hammond","title":"Head of Software Engineering, Cardano Core","url":"https://github.com/kevinhammond","imageURL":"https://github.com/kevinhammond.png","key":"kevinhammond"}],"frontMatter":{"title":"Incident Report","slug":"2023-04-17-ledger","authors":"kevinhammond","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-04-19-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-04-14-goedel"}},"content":"## Incident reporting: Cardano block production temporary outage\\n\\nOn Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a \u2018critical\u2019 incident, thus warranting immediate response and investigation by IOG engineers.\\nThe investigation (with SPO & Cardano Foundation collaboration) quickly revealed the cause of the issue \u2013 a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite. \\nFollowing successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.\\nWith the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.\\n\\n### Further Details\\n\\nYou can read more details on the incident and how it was managed from SundaeSwap\u2019s Pi Lanningham [here](https://www.314pool.com/post/cardano-post-mortem-1). Thanks again to all the community for its support in identifying and fixing this bug."},{"id":"2023-04-14-goedel","metadata":{"permalink":"/cardano-updates/2023-04-14-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-14-goedel.md","source":"@site/blog/2023-04-14-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-04-14T00:00:00.000Z","formattedDate":"April 14, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.415,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-04-14-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Incident Report","permalink":"/cardano-updates/2023-04-17-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-14-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has submitted two papers for publication, carried\\nout consultancy with other teams and has an opening for an intern.\\n\\n## Details\\n\\n* Finalised and submitted two papers to ICE 2023\\n\\n* Studying Praos paper.\\n\\n* The team is hiring a performance engineering intern - https://apply.workable.com/io-global/j/BFEC5B0AFF/\\n\\n* Design exploration for congestion management."},{"id":"2023-04-14-hydra","metadata":{"permalink":"/cardano-updates/2023-04-14-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-14-hydra.md","source":"@site/blog/2023-04-14-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-04-14T00:00:00.000Z","formattedDate":"April 14, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.98,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-04-14-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-04-14-goedel"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-07-hydra"}},"content":"## High-level summary\\n\\nThis week, the Hydra team focused on improving the smoke test, fixing developer\\ntooling, and improving the API for voting use cases. They reviewed progress on\\nauction, payments, and voting projects and made worked on reproducing a bug with\\nhandling rollbacks. Moving forward, the team plans to update dependencies,\\nimplement a dirt road fix for the rollbacks bug, and explore adding Hydra\\nsupport to kupo.\\n\\n## What did the team achieve this week\\n\\n-   Reviewed progress on auction, payments and voting projects\\n-   Improved smoke tests so they can run on mainnet\\n-   Fixed a regression in the development environment and updated cardano-node\\n    used in tests\\n-   Improved API with more configurability to unblock voting use case\\n    -   Exclude utxo in `SnapshotConfirmed` outputs [#808](https://github.com/input-output-hk/hydra/pull/808)\\n    -   Addressed a user request by only sending `Greetings` once [#813](https://github.com/input-output-hk/hydra/issues/813)\\n-   Reproduced the rollback bug by improving our model-based test suite [#784](https://github.com/input-output-hk/hydra/issues/784)\\n\\n## What are the goals of next week\\n\\n-   Update dependencies to match `cardano-node` master\\n-   Dirt road fix for rollbacks [#784](https://github.com/input-output-hk/hydra/issues/784)\\n-   Update Hydraw to maintain state locally\\n-   Explore adding Hydra support to kupo\\n-   Put disclaimer texts and closing mainnet compatibility feature [#713](https://github.com/input-output-hk/hydra/issues/713)"},{"id":"2023-04-07-hydra","metadata":{"permalink":"/cardano-updates/2023-04-07-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-07-hydra.md","source":"@site/blog/2023-04-07-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-04-07T00:00:00.000Z","formattedDate":"April 7, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.875,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-04-07-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-14-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-04-06-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team published the monthly report for March, created\\nseparate links for different versions of documentation, and clarified potential\\nsolutions for the Rollbacks bug. The team also discussed Query API requests for\\nthe Hydra Voting project and met with community members to answer questions\\nabout Hydra. Moving forward, the team plans to integrate the specification into\\nthe repository, implement a short-term fix for the Rollbacks issue, and draft a\\nQuery API ADR.\\n\\n## What did the team achieve this week\\n\\n-   Published monthly reports on [website](https://hydra.family/head-protocol/monthly/2023-03)\\n-   Separate last released and latest versions of docs (e.g. normal [released](https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs) vs. [/unstable](https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs))\\n-   Discussed Query API concerns from Hydra Voting project ([link](https://github.com/input-output-hk/hydra/discussions/797))\\n-   Clarified rollbacks bug and defined possible solutions (short and long term) [#784](https://github.com/input-output-hk/hydra/issues/784)\\n-   Met with community members to answer questions about Hydra\\n\\n## What are the goals of next week\\n\\n-   Finally get the docs integrated into the repository [#693](https://github.com/input-output-hk/hydra/issues/693)\\n-   Dirt road fix for rollbacks [#784](https://github.com/input-output-hk/hydra/issues/784)\\n-   Disclaimer text and detail known issues about mainnet compatibility\\n    [#713](https://github.com/input-output-hk/hydra/issues/713)"},{"id":"2023-04-06-mithril","metadata":{"permalink":"/cardano-updates/2023-04-06-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-06-mithril.md","source":"@site/blog/2023-04-06-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-04-06T00:00:00.000Z","formattedDate":"April 6, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.075,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-04-06-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-04-07-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-04-05-consensus"}},"content":"## High level overview\\nThe Mithril team released a new [`2313.0`](https://github.com/input-output-hk/mithril/releases/tag/2313.0) distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.\\n\\nFinally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to `1.35.6`.\\n\\n## Low level overview\\n- Released the new distribution [`2313.0`](https://github.com/input-output-hk/mithril/releases/tag/2313.0)\\n- Worked on the epic that implements a relational store in the aggregator [#779](https://github.com/input-output-hk/mithril/issues/779):\\n  - Completed the migration/adaptation of the `epoch_settings` table [#813](https://github.com/input-output-hk/mithril/issues/813)\\n  - Completed the migration/adaptation of the `signed-entity-type` table [#815](https://github.com/input-output-hk/mithril/issues/815)\\n  - Completed the migration/adaptation of the `certificate` table [#817](https://github.com/input-output-hk/mithril/issues/817)\\n  - Completed the migration/adaptation of the `open_message` table [#827](https://github.com/input-output-hk/mithril/issues/827)\\n  - Completed the migration/adaptation of the `signer_registration` table [#828](https://github.com/input-output-hk/mithril/issues/828)\\n- Completed the refactoring of the dependency injection of the aggregator [#823](https://github.com/input-output-hk/mithril/issues/823)\\n- Completed the cleanup of the multi-signer of the aggregator [#824](https://github.com/input-output-hk/mithril/issues/824)\\n- Completed the upgrade of the Cardano node to `1.35.6` [#843](https://github.com/input-output-hk/mithril/issues/843)"},{"id":"2023-04-05-consensus","metadata":{"permalink":"/cardano-updates/2023-04-05-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-consensus.md","source":"@site/blog/2023-04-05-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-04-05T00:00:00.000Z","formattedDate":"April 5, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.66,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-04-05-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-04-06-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-04-05-node-cli-api"}},"content":"## High level summary\\n\\nThis week the consensus team finished the UTxO-HD prototype refactoring. We are\\nnow working on improving the DB lock mechanism to improve performance. We also\\nintroduced several improvements to the file system abstraction and simulation\\nlayer (`fs-sim`), which culminated in the release of `fs-sim-0.1.0.0` and\\n`fs-api-0.1.0.0` to `CHaP`.\\n\\nOn the Genesis front we distributed the updated Genesis design document,\\nsoliciting feedback from Networking Team and IOG Researchers. We also opened up\\na PR for the adversarial leader schedule `QuickCheck` generator, which is being\\nreviewed.\\n\\nOn the support front, we got a new Consensus version that can use different\\nfundamental VRF crypto primitives for Babbage and Conway eras.\\n\\nOn the tech debt front we fixed an bug in the followers logic, which was\\ndiscovered by our `QuickCheck` property tests."},{"id":"2023-04-05-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-04-05-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-node-cli-api.md","source":"@site/blog/2023-04-05-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-04-05T00:00:00.000Z","formattedDate":"April 5, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.315,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-04-05-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-04-05-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-04-05-performance-and-tracing"}},"content":"# 2023-04-05 - 2023-04-19\\n\\n## High level summary\\n- Introduce new governance commands create, answer and verify. This allows us to have onchain polls.\\n- Begin making changes in cardano-api to accomodate for CIP-1694\\n- Rename `TestEnableDevelopmentHardForkEras` to `ExperimentalHardForksEnabled` and `TestEnableDevelopmentNetworkProtocols` to `ExperimentalProtocolsEnabled`\\n- Various bug fixes and improvements \\n\\n### docs\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Add new interim governance commands: {create, answer, verify}-poll](https://github.com/input-output-hk/cardano-node/pull/5112) \\n- [Remove --stake-address option from stake-address build](https://github.com/input-output-hk/cardano-node/pull/5061) \\n- [Frozen callstack for checkTextEnvelopeFormat function](https://github.com/input-output-hk/cardano-node/pull/5059) \\n- [#5052 Remove reading protocol parameters from Shelley genesis file](https://github.com/input-output-hk/cardano-node/pull/5053) \\n- [Move parsers to reusable location](https://github.com/input-output-hk/cardano-node/pull/5046) \\n- [New --socket-path cli option](https://github.com/input-output-hk/cardano-node/pull/4910) \\n\\n### cardano-api\\n- [CIP-1694 make space for DRep certificates](https://github.com/input-output-hk/cardano-node/pull/5108) \\n- [File type to track the content and direction of files](https://github.com/input-output-hk/cardano-node/pull/5105) \\n- [Fix import warning](https://github.com/input-output-hk/cardano-node/pull/5087) \\n- [Expose UsingRawBytes et al types](https://github.com/input-output-hk/cardano-node/pull/5086) \\n- [Expose SerialiseAsRawBytesError in Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/5085) \\n- [Introduce new AnyShelleyBasedEra type and simplify CDDL tests.](https://github.com/input-output-hk/cardano-node/pull/5072) \\n- [New genCardanoKeyWitness function](https://github.com/input-output-hk/cardano-node/pull/5071) \\n- [Replace roundtripCBOR with trippingCbor](https://github.com/input-output-hk/cardano-node/pull/5069) \\n- [Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator](https://github.com/input-output-hk/cardano-node/pull/5064) \\n- [Improve roundtrip functions to report annotations on callsite](https://github.com/input-output-hk/cardano-node/pull/5063) \\n- [Define Functor instance for FileError](https://github.com/input-output-hk/cardano-node/pull/5057) \\n- [Split serialisation from IO](https://github.com/input-output-hk/cardano-node/pull/5049) \\n\\n### cardano-node\\n- [Master build failure fixes](https://github.com/input-output-hk/cardano-node/pull/5115) \\n- [Allow renamed fields to exist if values the same](https://github.com/input-output-hk/cardano-node/pull/5106) \\n- [workbench: updates](https://github.com/input-output-hk/cardano-node/pull/5091) \\n- [Delete duplicate packages sort packages and imports](https://github.com/input-output-hk/cardano-node/pull/5084) \\n- [Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols](https://github.com/input-output-hk/cardano-node/pull/4341) \\n\\n### cardano-testnet\\n- [Additional check for not-leader slots in LeadershipSchedule tests](https://github.com/input-output-hk/cardano-node/pull/5110) \\n- [Fix epochLength and securityParam to conform to the formula 10 * k / f](https://github.com/input-output-hk/cardano-node/pull/5099) \\n- [Ergonomic directory creation code in tests](https://github.com/input-output-hk/cardano-node/pull/5083) \\n- [Default Cardano.Testnet to NodeLoggingFormatAsJson](https://github.com/input-output-hk/cardano-node/pull/5036) \\n- [Integrate latest ledger dependencies](https://github.com/input-output-hk/cardano-node/pull/5013)"},{"id":"2023-04-05-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-04-05-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-04-05-performance-and-tracing.md","source":"@site/blog/2023-04-05-performance-and-tracing.md","title":"Performance & tracing update","description":"* Benchmarking: We worked on adjusting our infrastructure to the new 8.0 release branch and performed a (very) early run.","date":"2023-04-05T00:00:00.000Z","formattedDate":"April 5, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.33,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-04-05-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-04-05-node-cli-api"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-31-crypto"}},"content":"* Benchmarking: We worked on adjusting our infrastructure to the new `8.0` release branch and performed a (very) early run.\\n* New tracing: We\'re profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.\\n* Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.\\n* Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.\\n* Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.\\n  \\n# Benchmarking\\n\\nWe have adapted our benchmarking cluster to the requirements of the `8.0` release branch. Testing runs of a very early feature branch for `8.0`\\nhelped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for `8.0` soon.\\n\\n# Tracing\\n\\nAnalysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very\\ndetailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing\\nthe highest possible throughput of data for forwarding to `cardano-tracer`.   \\n\\nAdditionally, we\'ve worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions\\nfor tunneling trace forwarding from a node to `cardano-tracer` via an easy to manage system service, which will match the production setup of most users.\\n\\n# Infrastructure & Analysis\\n\\n### General\\nVariance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance\\nanalysis can be fed back and serve as an additional point of comparison.\\n\\nFurthermore, we\'ve created a profile family for the workbench that\'s specifically aimed at measuring and comparing tracing system configurations.\\n\\n### Plutus library\\nWe opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.\\nThis will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.\\nIt is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.\\n\\n### Nomad backend\\nThe nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is\\nbeing improved to minimize any friction for the backend user."},{"id":"2023-03-31-crypto","metadata":{"permalink":"/cardano-updates/2023-03-31-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-crypto.md","source":"@site/blog/2023-03-31-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-03-31T00:00:00.000Z","formattedDate":"March 31, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.105,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-03-31-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-04-05-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-31-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: Started looking into full-node verifier\\n* cardano-base: BLS12-381\'s PR merged. Creating test-vectors for verifying basic pairing properties.\\n* KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  \\n* Sidechains: Included BLS12-381 & JubJub to halo2curves\\n* MuSig2: Final modifs to C version.\\n## Low level summary\\n### Mithril\\n* Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. \\n### cardano-base\\n* BLS12-381 branch merged [PR#266](https://github.com/input-output-hk/cardano-base/pull/266). \\n* Testing strategy for BLS bindings:\\n    * Test-vectors for Groth16, and simple BLS signatures ready.\\n    * Test-vectors with different library, and created by different engineer. \\n### KES agent\\n* Resolved issues of circular dependency\\n* Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  \\n* Opened a PR for raw bearer branch in ouroboros network [PR4395](https://github.com/input-output-hk/ouroboros-network/pull/4395)\\n* Resolved a bug where the agent node did not properly closed connections\\n* Updated version of [IOSim](https://github.com/input-output-hk/io-sim/pull/70) allowed us to finish a first version of KES agent.\\n### Sidechains\\n* Included [BLS12-381](https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a) curve to our branch of halo2curves\\n* Included [JubJub](https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f) to our branch of halo2curves \\n### MuSig2\\n* Minor reorg [PR#42](https://github.com/input-output-hk/musig2/pull/42)\\n* Started including fuzz testing for deserialisation [PR#](https://github.com/input-output-hk/musig2/pull/43)"},{"id":"2023-03-31-goedel","metadata":{"permalink":"/cardano-updates/2023-03-31-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-goedel.md","source":"@site/blog/2023-03-31-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-03-31T00:00:00.000Z","formattedDate":"March 31, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.455,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-03-31-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-31-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-31-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on final drafts of two papers\\nfor internal review and planning next steps of analysis of consensus\\ndesign refiniments.\\n\\n## Details\\n\\n* Preparing final draft of DeltaQSD algebra paper for internal review\\n\\n* Preparing final draft of verifying design refinements for\\n  distributed system design for internal review\\n\\n* Planning next phase of consensus design refinement analysis"},{"id":"2023-03-31-hydra","metadata":{"permalink":"/cardano-updates/2023-03-31-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-hydra.md","source":"@site/blog/2023-03-31-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-03-31T00:00:00.000Z","formattedDate":"March 31, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.82,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-03-31-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-31-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-31-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra continued work on finishing mainnet compatibility. The\\nsemi-automated smoke tests and some missing documentation is still preventing\\nfrom calling that fully done. They fixed smaller issues and made a step in the\\nHead protocol more robust. Besides development, they met with interested people\\nfrom the community who want to get started collaborating on communication and\\nmarketing materials.\\n\\n## What did the team achieve this week\\n\\n-   Groomed and followed-up on `GetUTxO` user request discussion [#797](https://github.com/input-output-hk/hydra/discussions/797)\\n-   Fixed `hydra-node` crashes after forks [#560](https://github.com/input-output-hk/hydra/issues/560)\\n-   Made `collectCom` more robust and aligned with spec [#786](https://github.com/input-output-hk/hydra/pull/786)\\n-   Completed configurable API feature [#380](https://github.com/input-output-hk/hydra/issues/380)\\n-   Met potential contributors about Hydra communication and marketing materials\\n-   Versioned documentation: we have a `unstable` bleeding edge version available as well now, seperate from the last released version\\n\\n## What are the goals of next week\\n\\n-   Follow-up backlog and roadmap clean-up\\n-   Complete mainnet compatibility feature [#713](https://github.com/input-output-hk/hydra/issues/713) (documentation updates)\\n-   Integrate Hydra specification into repository [#693](https://github.com/input-output-hk/hydra/issues/693)"},{"id":"2023-03-31-ledger","metadata":{"permalink":"/cardano-updates/2023-03-31-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-31-ledger.md","source":"@site/blog/2023-03-31-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-03-31T00:00:00.000Z","formattedDate":"March 31, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.97,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-03-31-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-31-hydra"},"nextItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-03-27-system-test"}},"content":"## High level summary\\n\\nWe are still heavily involved in work related to preparing the next release.\\nThe other main thing we have worked on is experimentation about how we will\\nhandle the DRep stake distribution for CIP-1694 in the conway ledger era.\\nLastly, we merged a fix for\\n[node-4826](https://github.com/input-output-hk/cardano-node/issues/4826)\\ninto our main branch (there will be a post-mortem shortly).\\n\\n## Low level summary\\n\\n### Support for the next release\\n\\n* [pull-3363] - Fix problems relating to Arbitrary instances used by consensus.\\n* [pull-3361] - Remove the alonze genesis from the conway genesis.\\n* [pull-3360] - Translate bad pointer addresses to valid ones in conway.\\n* [pull-3357] - Fix a bug relating to zero valued ADA in the script context.\\n* [pull-3356] - Added needed instances (Arbitrary and Serialization) for conway integration.\\n* [pull-3345] - Added helper functions for the CLI.\\n* [pull-3342] - Fix a bug with a CLI helper function (having to do with deposit tracking).\\n\\n### Experiments for DRep stake distribution\\n\\nAdding another stake distribution to the ledger state presents some new challenges.\\nWe would like to be able to use the current stake distribution at the epoch boundary\\nfor DRep voting so that people can always vote themselves in time for any proposal.\\nTo this end, we have a prototype of an incremental computation based on the incremental\\nlambda calculus, together with tests and benchmarks (which are very promising).\\nSee [pull-3344].\\n\\nAdditionally, more of the ledger state is going to need to be rearranged to accomodate\\nthe new incremental computations.\\nWe have two draft PRs up for possibles solution.\\nSee [pull-3353] and [pull-3364].\\n\\n### Technical debt and bug fixes\\n\\n* [pull-3343] - A fix [node-4826](https://github.com/input-output-hk/cardano-node/issues/4826).\\n* [pull-3333] - Moving more code out of the shelley packages. \\n* [pull-3347] - Bug fix for the multi-asset generators.\\n* [pull-3341] - Removal of code duplication.\\n\\n### Documentation changes\\n\\n* [pull-3354] - Rename \\"optional datums\\" with \\"supplemental datums\\" in the alonzo spec.\\n* [pull-3352] - Add a section to the Shelly errata about the individual deposit tracking.\\n* [pull-3351] - Further clarify the details regarding the script integrity hash.\\n* [pull-3350] - Some cleanup of the Babbage spec.\\n\\n\\n[pull-3363]: https://github.com/input-output-hk/cardano-ledger/pull/3363\\n[pull-3361]: https://github.com/input-output-hk/cardano-ledger/pull/3361\\n[pull-3360]: https://github.com/input-output-hk/cardano-ledger/pull/3360\\n[pull-3357]: https://github.com/input-output-hk/cardano-ledger/pull/3357\\n[pull-3356]: https://github.com/input-output-hk/cardano-ledger/pull/3356\\n[pull-3345]: https://github.com/input-output-hk/cardano-ledger/pull/3345\\n[pull-3342]: https://github.com/input-output-hk/cardano-ledger/pull/3342\\n[pull-3344]: https://github.com/input-output-hk/cardano-ledger/pull/3344\\n[pull-3353]: https://github.com/input-output-hk/cardano-ledger/pull/3353\\n[pull-3364]: https://github.com/input-output-hk/cardano-ledger/pull/3364\\n[pull-3343]: https://github.com/input-output-hk/cardano-ledger/pull/3343\\n[pull-3333]: https://github.com/input-output-hk/cardano-ledger/pull/3333\\n[pull-3347]: https://github.com/input-output-hk/cardano-ledger/pull/3347\\n[pull-3341]: https://github.com/input-output-hk/cardano-ledger/pull/3341\\n[pull-3354]: https://github.com/input-output-hk/cardano-ledger/pull/3354\\n[pull-3352]: https://github.com/input-output-hk/cardano-ledger/pull/3352\\n[pull-3351]: https://github.com/input-output-hk/cardano-ledger/pull/3351\\n[pull-3350]: https://github.com/input-output-hk/cardano-ledger/pull/3350"},{"id":"2023-03-27-system-test","metadata":{"permalink":"/cardano-updates/2023-03-27-system-test","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-27-system-test.md","source":"@site/blog/2023-03-27-system-test.md","title":"System Test Team Update","description":"High level summary","date":"2023-03-27T00:00:00.000Z","formattedDate":"March 27, 2023","tags":[{"label":"system-test","permalink":"/cardano-updates/tags/system-test"}],"readingTime":0.785,"hasTruncateMarker":false,"authors":[{"name":"Martin Kourim","title":"System Test Engineer","url":"https://github.com/mkoura","imageURL":"https://github.com/mkoura.png","key":"mkoura"}],"frontMatter":{"title":"System Test Team Update","slug":"2023-03-27-system-test","authors":"mkoura","tags":["system-test"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-31-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-24-hydra"}},"content":"## High level summary\\nSince the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the _1.35.5_ and _1.35.6_ releases (and their predecessing release candidates) and ran tests on branch with the _UTxO-HD_ functionality.\\n\\n## Workstreams\\n\\n### Framework improvements:\\n- improvements in searching for unexpected error messages in log files during test run\\n- added support for UTxO-HD testing\\n- added support for the new P2P topology format\\n- added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)\\n- added preliminary support for the Conway era\\n- added support for running tests on the _Preview_ testnet\\n\\n[Full list of closed PRs](https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26)\\n\\n### Node:\\n- ran tests on node branch with the UTxO-HD functionality\\n- tested the [1.35.5](https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html) release\\n- tested the [1.35.6](https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html) release\\n\\n### DB-Sync:\\n- improvements in db-sync sync tests\\n- improvements in db-sync functional tests"},{"id":"2023-03-24-hydra","metadata":{"permalink":"/cardano-updates/2023-03-24-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-24-hydra.md","source":"@site/blog/2023-03-24-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-03-24T00:00:00.000Z","formattedDate":"March 24, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.95,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-03-24-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-03-27-system-test"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-03-23-db-sync"}},"content":"## High-level summary\\n\\nThis week, the Hydra had a team workshop and conducted the monthly review\\nmeeting for March. They demonstrated a Hydra Head on mainnet, which was running\\nthe hydraw demo application. While this marks an important milestone, they also\\nemphasized that more features are still to be added as needed for applications\\nto run on Hydra. Besides this, the roadmap is getting cleaned up to encourage\\ndiscussions and provide more space for user requests.\\n\\n## What did the team achieve this week\\n\\n-   Monthly review meeting [slides](https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392)/[recording](https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c), full report of March next week\\n    -   Opened a head on mainnet with hydraw demonstration\\n    -   Hydra pay updates\\n-   Team workshop in Austria\\n    -   Hydra presentation at the Cardano Foundation in Zurich\\n    -   In-person grooming session, marked many items as candidates to be rather :idea: dicussions\\n    -   Improved head protocol [#786](https://github.com/input-output-hk/hydra/pull/786) and investigated a potential bug in rollback handling [#784](https://github.com/input-output-hk/hydra/issues/784)\\n    -   Team building and retrospective\\n\\n## What are the goals of next week\\n\\n-   Follow-up on backlog and roadmap clean-up\\n-   Complete mainnet compatibility feature (documentation updates)\\n-   Make API more configurable [#380](https://github.com/input-output-hk/hydra/issues/380)\\n-   Integrate Hydra specification into repository [#693](https://github.com/input-output-hk/hydra/issues/693)"},{"id":"2023-03-23-db-sync","metadata":{"permalink":"/cardano-updates/2023-03-23-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-23-db-sync.md","source":"@site/blog/2023-03-23-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-03-23T00:00:00.000Z","formattedDate":"March 23, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.755,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-03-23-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-24-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-03-23-mithril"}},"content":"## High level summary\\n\\nThe DBSync team worked in performance enhancements issues, on providing new db-sync options and on\\ntechnical debt and bug fixing. The DBSync team also on boarded a new member.\\n\\n## Low level summary\\n- Worked on an issue which causes `ada_pots` tables to include the values related not only to an\\nepoch, but also the first epoch of the last epoch.\\n[#1367](https://github.com/input-output-hk/cardano-db-sync/pull/1367)\\n- Fixed an issue where the `epoch` table didn\'t rollback and caused wrong values\\n[#1370](https://github.com/input-output-hk/cardano-db-sync/pull/1370)\\n- Fixed an issue were users with `disable-ledger` option had to provide the state dir option, even\\nthough it was never used. Also refactored the no ledger part of the codebase.\\n[#1378](https://github.com/input-output-hk/cardano-db-sync/pull/1378)\\n- Improved the perforance by using the cache more. Also provided many new options which enables or\\ndisables parts of db-sync. In addition a new `--turbo` mode is enables which allows db-sync to sync\\nmainnet in hours.\\n[#1379](https://github.com/input-output-hk/cardano-db-sync/pull/1379)"},{"id":"2023-03-23-mithril","metadata":{"permalink":"/cardano-updates/2023-03-23-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-23-mithril.md","source":"@site/blog/2023-03-23-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-03-23T00:00:00.000Z","formattedDate":"March 23, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.615,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-03-23-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-03-23-db-sync"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-03-22-consensus"}},"content":"## High level overview\\nThe Mithril team released a new [`2310.0`](https://github.com/input-output-hk/mithril/releases/tag/2310.0) distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings & signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.\\n\\nFinally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano `mainnet` and they have fixed some bugs. \\n\\n## Low level overview\\n- Completed the epic that implements eras behavior switch [#707](https://github.com/input-output-hk/mithril/issues/707):\\n  - Completed handling the API version switch at era transition [#727](https://github.com/input-output-hk/mithril/issues/727)\\n- Worked on the epic that implements a relational store in the aggregator [#779](https://github.com/input-output-hk/mithril/issues/779):\\n  - Completed on the migration/adaptation of the `stake_pool` table [#787](https://github.com/input-output-hk/mithril/issues/787)\\n  - Worked on the migration/adaptation of the `epoch_settings` table [#813](https://github.com/input-output-hk/mithril/issues/813)\\n  - Worked on the migration/adaptation of the `signed-entity-type` table [#815](https://github.com/input-output-hk/mithril/issues/815)\\n  - Completed the creation of a stake distribution service [#799](https://github.com/input-output-hk/mithril/issues/799)\\n- Completed the testing of Mithril with Cardano `mainnet` network [#777](https://github.com/input-output-hk/mithril/issues/777)\\n- Completed qualifying the computation of the stake distribution [#810](https://github.com/input-output-hk/mithril/issues/810)\\n- Completed the testing of the Docker client in the `Mithril Client multi-platform test` workflow [#794](https://github.com/input-output-hk/mithril/issues/794)\\n- Worked on bugs and optimizations:\\n  - Fixed a bug that made computation of the stake distribution occur multiple times during an epoch [#804](https://github.com/input-output-hk/mithril/issues/804)\\n  - Fixed a bug that created deadlocks on the SQLite connection [#807](https://github.com/input-output-hk/mithril/issues/807)\\n  - Optimized the error message and the behavior of the signer node when KES keys have expired [#820](https://github.com/input-output-hk/mithril/issues/820)\\n  - Upgraded the infrastructure of the `testing-preview` and `pre-release-preview` networks [#801](https://github.com/input-output-hk/mithril/issues/801)\\n  - Re-genesis of the `testing-preview` network [#803](https://github.com/input-output-hk/mithril/issues/803)\\n  - Re-genesis of the `pre-release-preview` network [#818](https://github.com/input-output-hk/mithril/issues/818)"},{"id":"2023-03-22-consensus","metadata":{"permalink":"/cardano-updates/2023-03-22-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-consensus.md","source":"@site/blog/2023-03-22-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-03-22T00:00:00.000Z","formattedDate":"March 22, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":0.63,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-03-22-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-03-23-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-03-22-node-cli-api"}},"content":"## High level summary\\n\\nThis week the consensus team continued working on the refactoring of the UTxO HD\\nprototype, and design and testing of Genesis. We also extracted the `fs-sim`\\npackage, which provides a file-system abstraction layer that can be used for\\ntesting and simulation. This makes the Consensus code base smaller, while\\nproviding a package that the community can reuse and contribute to. We also\\nfixed a failing property test related to iterators. We are also working on\\nmempool and VRF improvements.\\n\\n\\n## Low-level details\\n\\n- Extraction of `fs-sim` code from `ouroboros-network`:\\n    - https://github.com/input-output-hk/ouroboros-network/pull/4425\\n    - https://github.com/input-output-hk/fs-sim/pull/1\\n    - https://github.com/input-output-hk/fs-sim/pull/2\\n    - https://github.com/input-output-hk/ouroboros-network/pull/4460\\n- Smaller changes in `fs-sim` code (some required by `UTxO-HD`):\\n    - https://github.com/input-output-hk/fs-sim/pull/5\\n    - https://github.com/input-output-hk/fs-sim/pull/6\\n    - https://github.com/input-output-hk/fs-sim/pull/7\\n    - https://github.com/input-output-hk/fs-sim/pull/8\\n- Released cardano-lmdb-simple-0.6.0.0\\n    - https://github.com/input-output-hk/lmdb-simple/pull/20\\n    - https://github.com/input-output-hk/cardano-haskell-packages/pull/150"},{"id":"2023-03-22-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-03-22-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-node-cli-api.md","source":"@site/blog/2023-03-22-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-03-22T00:00:00.000Z","formattedDate":"March 22, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":0.645,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-03-22-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-03-22-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-03-22-performance-and-tracing"}},"content":"# 2023-03-22 - 2023-04-05\\n\\n## High level summary\\n\\n- Added new cardano-cli ping command which allows users to ping remote cardano-nodes.\\n- The `transaction build` command now can automatically balance multiassets\\n- New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.\\n\\n### docs\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Remove unused error constructors](https://github.com/input-output-hk/cardano-node/pull/5041) \\n- [Fix qKesKesKeyExpiry to not always be null](https://github.com/input-output-hk/cardano-node/pull/4909) \\n- [New cardano-cli ping command.](https://github.com/input-output-hk/cardano-node/pull/4664) \\n\\n### cardano-api\\n- [Remove use of AcquireFailure type](https://github.com/input-output-hk/cardano-node/pull/5040) \\n- [Simplify implementation of executeQueryAnyMode](https://github.com/input-output-hk/cardano-node/pull/5038) \\n- [Script data serialisation](https://github.com/input-output-hk/cardano-node/pull/5002) \\n- [Guard against overflows in Shelley TxIns](https://github.com/input-output-hk/cardano-node/pull/4956) \\n- [Combinators for TxBodyContent and related types](https://github.com/input-output-hk/cardano-node/pull/4941) \\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450) \\n\\n### cardano-node\\n\\n### cardano-testnet\\n- [Use Haskell variables for passing values.](https://github.com/input-output-hk/cardano-node/pull/5011) \\n- [Re-enable kes-period-info test.](https://github.com/input-output-hk/cardano-node/pull/4879)"},{"id":"2023-03-22-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-03-22-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-22-performance-and-tracing.md","source":"@site/blog/2023-03-22-performance-and-tracing.md","title":"Performance & tracing update","description":"* Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.","date":"2023-03-22T00:00:00.000Z","formattedDate":"March 22, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.5,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-03-22-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-03-22-node-cli-api"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-03-21-network"}},"content":"* Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.\\n* New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we\'re currently improving documentation and creating setup guidelines for end users.\\n* Analysis pipeline: Our refined metrics PR has been merged. We\'re working on including variance analysis to our reporting machinery.\\n* Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we\'re laying the groundwork for enabling GHC 9.2 in our benchmarks.\\n* Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.\\n* Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.\\n\\n# Performance\\n\\n### New tracing\\nThe new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe\\na slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.\\n\\n### GHC RTS parametrization\\nWe\'re currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies\\non different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.\\n\\n### Open Sourcing\\nOur API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we\'re refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.\\n\\n# Tracing\\nFor the new tracing system we\'re currently undertaking an effort to multi-layered documentation: a condensed version, as well\\nas a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points\\nfor users of the new system, depending on their wants and needs. \\n\\n# Infrastructure & Analysis\\n\\n### General\\nHaving included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we\'re laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will\\nincrease confidence in specific metrics.\\n\\n### Nomad backend\\nWe have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis\\nis patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We\'re confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries."},{"id":"2023-03-21-network","metadata":{"permalink":"/cardano-updates/2023-03-21-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-21-network.md","source":"@site/blog/2023-03-21-network.md","title":"Network Team Update","description":"High level summary","date":"2023-03-21T00:00:00.000Z","formattedDate":"March 21, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.315,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-03-21-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-03-22-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-17-crypto"}},"content":"## High level summary\\n\\nIn the last spring we released `cardano-node-1.35.6` with dynamic P2P\\nfunctionality.\\n\\nWe received reports from some SPOs who encountered problems with their non\\nP2P block producing nodes not being able to connect to their P2P relay.  Karl\\nKnutsson (from Cardano Foundation) reproduced this issue between two nodes (a\\nnon P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed\\nit and found a bug in the legacy non p2p code.  The bug is only possible to\\ntrigger with a P2P node which is binding its outbound connection port to\\na fixed IP address and port (default in p2p).  A possible solution was found.\\nFor more information see [#4465].\\n\\nWe released `cardano-ping-0.1.0.0` package to `CHaP`.  `cardano-ping` is no\\nlonger available as a standalone binary, but instead it will become part of\\n`cardano-cli` (see [#4664])\\n\\nWe are testing `cardano-node` with peer sharing functionality ([#4019]).\\n\\nWe are working on _eclipse evasion_.  We added new class of peers: big ledger\\npeers to the outbound governor, implemented tests and fixed found issues\\n([#4462]).  We also made the information if a given peer plays the role of\\na big ledger peer to the mini-protocols.  This will allow to modify\\nmini-protocol applications for such peers.   As part of this functionality we\\nrefactored some core types in the network code which simplifies exposed API.\\n\\nTogether with Moritz Angerman we started to update `io-sim` to `ghc-9.6.1` (see\\n[#73]).\\n\\nWe merged a fix of configuration of accepted connections limit in\\n`cardano-node` (see [#4902]).\\n\\n\\n[#4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[#4462]: https://github.com/input-output-hk/ouroboros-network/pull/4462\\n[#4465]: https://github.com/input-output-hk/ouroboros-network/issues/4465\\n[#4664]: https://github.com/input-output-hk/cardano-node/pull/4664\\n[#73]: https://github.com/input-output-hk/io-sim/pull/73\\n[#4902]: https://github.com/input-output-hk/cardano-node/pull/4902"},{"id":"2023-03-17-crypto","metadata":{"permalink":"/cardano-updates/2023-03-17-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-crypto.md","source":"@site/blog/2023-03-17-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-03-17T00:00:00.000Z","formattedDate":"March 17, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.255,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-03-17-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-03-21-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-17-hydra"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: RFP finished. Code ready for audit.\\n* cardano-base: BLS12-381\'s PR approved, only blocker is Windows\' CI. Preparing extensive testing strategy together with Plutus and Testing teams.\\n* KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.\\n* Sidechains: Preparing proving system to use the curves needed for main-net PoC.  \\n## Low level summary\\n### Mithril\\n* Merged [PR#783](https://github.com/input-output-hk/mithril/pull/783)\\n* RFP for crypto audit ready.\\n### cardano-base\\n* BLS12-381 branch approved [PR#266](https://github.com/input-output-hk/cardano-base/pull/266). Blocker is Windown\'s CI. Working on it\\n* Testing strategy for BLS bindings:\\n    * Preparing test-vectors for Groth16, and simple BLS signatures\\n    * Finding community projects to help write their use cases\\n    * Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)\\n* Wrote [blogpost](https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md) on how using the same key for ed25519 and VRF completely breaks the security of both systems \\n### KES agent\\n* Started integration of sockets interface used in consensus\\n* Use that for de/ser\\n* Resolving problems with block memory in IOSim. Can\'t use withForeignPtr in IOSim\\n* Results in having to parametrise for IOSim in KES and DSIGN for testing\\n### Sidechains\\n* Prepared an API for proof generation in sidechains, with it\'s C API for integration with JVM languages.\\n* Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.\\n* EdDSA over JubJub ready"},{"id":"2023-03-17-hydra","metadata":{"permalink":"/cardano-updates/2023-03-17-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-hydra.md","source":"@site/blog/2023-03-17-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-03-17T00:00:00.000Z","formattedDate":"March 17, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.015,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-03-17-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-17-crypto"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-17-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has continued work on the mainnet compatibility of the\\nhydra-node. They added a golden test suite for `hydra-plutus` scripts, added\\nsome detection of `hydra-node` misconfiguration, established a limit of 100 ADA\\nper commit and other smaller tasks to prepare for a mainnet beta release.\\n\\nNext week there will be a small team workshop to push for demonstrating a Hydra\\nHead on the Cardano mainnet, ideally just in time for the monthly review\\nmeeting. See the hydra channels on the IOG Technical Community discord server\\nfor details.\\n\\n## What did the team achieve this week\\n\\n-   Implement a 100 ADA hard-coded commit limit in the hydra-node\\n    [#763](https://github.com/input-output-hk/hydra/pull/763)\\n-   Pay back funds to faucet after smoke-test run\\n    [#773](https://github.com/input-output-hk/hydra/pull/773)\\n-   Setup custom github runner for smoke-tests on mainnet\\n    [#775](https://github.com/input-output-hk/hydra/pull/775)\\n-   Created golden tests to assure the script hash stays the same between\\n    changes [#772](https://github.com/input-output-hk/hydra/pull/772)\\n-   Removed hardcoded error codes in plutus scripts\\n    [#768](https://github.com/input-output-hk/hydra/pull/768)\\n-   Detect misconfiguration of a hydra-node given persistent state\\n    [#767](https://github.com/input-output-hk/hydra/pull/767)\\n-   Met with potential users for hydra-pay\\n-   Prepared hydra workshop\\n\\n## What are the goals of next week\\n\\n-   Hydra monthly meeting\\n-   Open a multi-party head on mainnet\\n-   Complete mainnet compatibility feature"},{"id":"2023-03-17-ledger","metadata":{"permalink":"/cardano-updates/2023-03-17-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-17-ledger.md","source":"@site/blog/2023-03-17-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-03-17T00:00:00.000Z","formattedDate":"March 17, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.415,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-03-17-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-17-hydra"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-16-goedel"}},"content":"## High level summary\\n\\nWe made further progress on the conway ledger era.\\nIn particular, we expanded the ledger API significantly, including lots of governance features.\\nWe also made progress on the specification and corresponding work in the Haskell implementation.\\n\\nWe also continued to integrate the latest ledger packages into cardano node and addressed\\ntechnical debt.\\n\\n## Low level summary\\n\\n### Expanded ledger API\\n\\nThe ledger API was significantly expanded to include:\\n* a lot of protocol parameter support\\n* versioning support (type level ledger eras and protocol versions)\\n* auxiliary data support\\n* many new lenses\\n* support for witnesses\\n* support for conway governance\\n\\nSee [pull-3328].\\n\\n### Conway ledger rules\\n\\nWe have made progress on the formal ledger specification for the Conway era.\\nMoreover, the corresponding Haskell updates were also completed:\\n\\n* See [pull-3339]\\n* See [pull-3326]\\n* See [pull-3330]\\n\\n### Incremental SPO/DRep stake distribution computation\\n\\nWe have a working (and correct) proof of concept for how to use the incremental lambda calculus\\nto maintain several of the stake distributions incrementally.\\nFor the per-SPO distribution, this is a performance improvement.\\nFor the (conway) per-DRep distribution, this is will allow those who have delegated their votes\\nto a DRep to have time to react to any votes that they disapprove of.\\n(Sorry, no code to share just yet, more to come.)\\n\\n### Technical debt\\n\\n* Improved CBOR testing facilities [pull-3332]\\n* GitHub actions improvement [pull-3320]\\n* Move ToJSON orphans from cardano-node [pull-3323] [pull-3338]\\n* Minor OCert improvements [pull-3327]\\n* Remove duplication [pull-3341]\\n* Enforce unique elements in CBOR sets [pull-3331] \\n\\n[pull-3320]: https://github.com/input-output-hk/cardano-ledger/pull/3320\\n[pull-3323]: https://github.com/input-output-hk/cardano-ledger/pull/3323\\n[pull-3326]: https://github.com/input-output-hk/cardano-ledger/pull/3326\\n[pull-3327]: https://github.com/input-output-hk/cardano-ledger/pull/3327\\n[pull-3328]: https://github.com/input-output-hk/cardano-ledger/pull/3328\\n[pull-3330]: https://github.com/input-output-hk/cardano-ledger/pull/3330\\n[pull-3331]: https://github.com/input-output-hk/cardano-ledger/pull/3331\\n[pull-3332]: https://github.com/input-output-hk/cardano-ledger/pull/3332\\n[pull-3338]: https://github.com/input-output-hk/cardano-ledger/pull/3338\\n[pull-3339]: https://github.com/input-output-hk/cardano-ledger/pull/3339\\n[pull-3341]: https://github.com/input-output-hk/cardano-ledger/pull/3341"},{"id":"2023-03-16-goedel","metadata":{"permalink":"/cardano-updates/2023-03-16-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-16-goedel.md","source":"@site/blog/2023-03-16-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-03-16T00:00:00.000Z","formattedDate":"March 16, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.55,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-03-16-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-17-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-10-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on drafts of two papers\\nimproving the deltaQ tutorial, consulting on performance design, and\\nthe final version of the Djed paper.\\n\\n## Details\\n\\n* Preparing draft of DeltaQSD algebra paper for ICE 2023\\n\\n* Successful outcome of Marlowe consultancy leading to substantial\\n  improvement in performance\\n\\n* Preparing sections on the communication language and bisimulation\\n  proofs for draft paper about verifying design refinements for\\n  distributed system design\\n\\n* Camera ready version of Djed paper under preparation"},{"id":"2023-03-10-hydra","metadata":{"permalink":"/cardano-updates/2023-03-10-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-10-hydra.md","source":"@site/blog/2023-03-10-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-03-10T00:00:00.000Z","formattedDate":"March 10, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.825,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-03-10-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-16-goedel"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-03-09-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team addressed issues with committing complex UTxOs into a\\nHydra Head, prepared the `hydra-node` to be run on mainnet (soon) and improved\\nthe test suite of the `hydra-plutus` scripts. The specification is constantly\\ngetting improved upon reviewer feedback on overleaf - this week the graphical\\nnotation was refined to be more transaction-focused.\\n\\n## What did the team achieve this week\\n\\n-   Clarified &ldquo;bug&rdquo; of committing UTxOs with reference scripts to a Hydra head [#737](https://github.com/input-output-hk/hydra/issues/737)\\n-   Prepare usage of `hydra-node` on mainnet by updating command line options [#715](https://github.com/input-output-hk/hydra/pull/715)\\n-   Improved our mutation test suite to all expected errors [#705](https://github.com/input-output-hk/hydra/issues/705)\\n-   Re-opened our persistent hydraw demo head on `preprod` using version `0.9.0`\\n-   Updated on-chain graphs to be more transaction-focused in the specification\\n\\n## What are the goals of next week\\n\\n-   Complete mainnet compatibility feature\\n-   Prepare the Hydra workshop\\n-   Address all todo\u2019s in the Hydra specification\\n-   Unblock the auctions project with &ldquo;commit from script&rdquo; a solution"},{"id":"2023-03-09-mithril","metadata":{"permalink":"/cardano-updates/2023-03-09-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-09-mithril.md","source":"@site/blog/2023-03-09-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-03-09T00:00:00.000Z","formattedDate":"March 9, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.42,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-03-09-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-10-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-03-08-consensus"}},"content":"## High level overview\\nThe Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano `mainnet` and computes the stake distribution with the optimized unreleased Cardano CLI command.\\n\\nFinally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.\\n\\n## Low level overview\\n- Worked on the epic that implements eras behavior switch [#707](https://github.com/input-output-hk/mithril/issues/707):\\n  - Completed the deployment of the era behavior switch to the test networks [#752](https://github.com/input-output-hk/mithril/issues/752)\\n  - Completed the enhancement of datum generation for era markers [#786](https://github.com/input-output-hk/mithril/issues/786)\\n  - Worked on handling the API version with an era switch [#727](https://github.com/input-output-hk/mithril/issues/727)\\n- Worked on the epic that implements a relational store in the aggregator [#779](https://github.com/input-output-hk/mithril/issues/779):\\n  - Worked on the migration/adaptation of the `stake_pool` table [#787](https://github.com/input-output-hk/mithril/issues/787)\\n- Completed the refactoring of errors in the signer and aggregator state machines [#665](https://github.com/input-output-hk/mithril/issues/665)\\n- Worked on testing Mithril with a `mainnet` Cardano network [#777](https://github.com/input-output-hk/mithril/issues/777)\\n- Worked on fixing bugs with the Docker client image:\\n  - Fixed a bug that made the Docker client container crash at startup [#769](https://github.com/input-output-hk/mithril/issues/769)\\n  - Fixed a bug that prevented the restoration of a snapshot with a Docker client [#791](https://github.com/input-output-hk/mithril/issues/791)\\n  - Worked on testing the Docker client in the `Mithril Client multi-platform test` workflow [#794](https://github.com/input-output-hk/mithril/issues/794)"},{"id":"2023-03-08-consensus","metadata":{"permalink":"/cardano-updates/2023-03-08-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-consensus.md","source":"@site/blog/2023-03-08-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-03-08T00:00:00.000Z","formattedDate":"March 8, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.46,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-03-08-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-03-09-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-03-08-node-cli-api"}},"content":"## High level summary\\n\\nThe Consensus team continued working on refactoring and improving the UTxO-HD\\nprototype, and introducing improvements to the `lmdb` related packages. In\\nparticular we identified an opportunity to gain performance by handling locks in\\na more optimal way.\\n\\nOn the Genesis front, we sketched a mitigation for an issue that `PNSol` and\\nResearchers caught. We also came op with a road map for not only testing the\\nGenesis prototypes, but also for enriching the tests we already have.\\n\\nRegarding technical debt, next to some minor improvements, we created\\ncomponent-level micro-benchmarks for adding transactions to the mempool. The\\nresults of these benchmarks will be published in the `ouroboros-consensus` [web\\npage][oc-web-page].\\n\\nWe also finished moving the Consensus documentation to the `ouroboros-consensus`\\nrepository, released `ouroboros-consensus` `0.3.0.0`, and reduced the time\\nGitHub actions take in `ouroboros-network`.\\n\\n## Workstreams\\n\\n### UTxO HD Prototype\\n\\nWe continued working on refactoring and improving the UTxO-HD prototype. As a\\nresult of the first round of sytem-level benchmarks, we identified an\\nopportunity to optimise the way we handle locks to improve performance\\n([#4393][issue-4393]).\\n\\nAlso, we introduced several improvements to the `lmdb` related packages:\\n- [New tests][pull-19] for read-only transaction handles.\\n- [New functions][pull-18] and [data types][pull-13].\\n- [Updates][pull-11] to support improved type safety and smaller constraints in\\n  the UTxO HD prototype.\\n- Windows and MacOS [CI support][pull-8].\\n\\n### Genesis\\n\\nWe sketched out a mitigation of the issue that `PNSol` and Researchers caught in\\nthe Genesis design.\\n\\nWe came up with a road map for testing the Genesis prototypes, including early\\nmilestones that are applicable to today\'s master branch, ie tests that are\\nuseful before Genesis, and that will be nicely enriched when we do add Genesis.\\n\\nWe developed the aforementioned tests, specifically a `QuickCheck` generator for\\nthe Honest leader schedule and one as-aggressive-as-possible Adversarial\\nleader schedule that together satisfy the Praos properties that the Consensus\\ndesign takes as invariants.\\n\\nWe investigated why the improved `ChainDB` queueing implementation behaves\\ndifferently in the baseline compared to the prototype, and we are close to\\nhaving a full picture of how the Consensus components interact during bulk sync.\\n\\n### Technical debt\\n\\nWe [created][pull-4400] component-level micro-benchmarks for adding transactions\\nto the mempool. We plan on extending this to more mempool actions and different\\ntypes of blocks. We [store][pull-4422] the benchmark data to make it available\\nto the GitHub action that [publishes][pull-12] the benchmarks results.\\n\\nOther minor improvements include:\\n\\n- [Removal][pull-4429] of `Test.Util.Classify` in favour of `Test.StateMachine.Labelling`.\\n- [Addition][pull-4423] of `-Wunused-packages` to the default `ghc-options` for Consensus\\n  packages.\\n\\n### Fostering collaboration\\n\\nWe finished moving the Consensus documentation [from][pull-4374]\\n`ouroboros-network` [to][pull-8] `ouroboros-consensus`, in preparation for\\nmigrating the code to the latter repository.\\n\\n### Support\\n\\nWe [released][pull-4412] ouroboros-consensus 0.3.0.0.\\n\\nWe [reduced][pull-4421] the load in the `ouroboros-network` GitHub actions,\\nthereby reducing the time CI jobs take.\\n\\n[issue-4393]: https://github.com/input-output-hk/ouroboros-network/issues/4393\\n[pull-19]: https://github.com/input-output-hk/lmdb-simple/pull/19\\n[pull-18]: https://github.com/input-output-hk/lmdb-simple/pull/18\\n[pull-13]: https://github.com/input-output-hk/lmdb-simple/pull/13\\n[pull-11]: https://github.com/input-output-hk/lmdb-simple/pull/11\\n[pull-8]: https://github.com/input-output-hk/haskell-lmdb/pull/8\\n[pull-4400]: https://github.com/input-output-hk/ouroboros-network/pull/4400\\n[pull-4422]: https://github.com/input-output-hk/ouroboros-network/pull/4422\\n[pull-12]: https://github.com/input-output-hk/ouroboros-consensus/pull/12\\n[pull-4429]: https://github.com/input-output-hk/ouroboros-network/pull/4429\\n[pull-4423]: https://github.com/input-output-hk/ouroboros-network/pull/4423\\n[pull-4374]: https://github.com/input-output-hk/ouroboros-network/pull/4374\\n[pull-8]: https://github.com/input-output-hk/ouroboros-consensus/pull/8\\n[pull-4412]: https://github.com/input-output-hk/ouroboros-network/pull/4412\\n[pull-4421]: https://github.com/input-output-hk/ouroboros-network/pull/4421\\n[oc-web-page]: https://input-output-hk.github.io/ouroboros-consensus/"},{"id":"2023-03-08-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-03-08-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-node-cli-api.md","source":"@site/blog/2023-03-08-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-03-08T00:00:00.000Z","formattedDate":"March 8, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":0.795,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-03-08-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-03-08-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-03-08-performance-and-tracing"}},"content":"# 2023-03-08 - 2023-03-21\\n\\n## High level summary\\n\\nGeneral bug fixes and some refactoring \\n## Completed\\n\\n### docs\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Remove error calls in Cardano.CLI.Shelley.Run.Transaction](https://github.com/input-output-hk/cardano-node/pull/4958) \\n- [Detect invalid counter and certificate](https://github.com/input-output-hk/cardano-node/pull/4880) \\n\\n### cardano-api\\n- [Add missing imports](https://github.com/input-output-hk/cardano-node/pull/5003) \\n- [Add LedgerStateBabbage and LedgerStateConway pattern synonyms](https://github.com/input-output-hk/cardano-node/pull/5001) \\n- [Remove unnecessary functions](https://github.com/input-output-hk/cardano-node/pull/4967) \\n- [Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage](https://github.com/input-output-hk/cardano-node/pull/4953) \\n- [Reduce number of calls to toLedgerPParams](https://github.com/input-output-hk/cardano-node/pull/4903) \\n- [Remove simple script distinction](https://github.com/input-output-hk/cardano-node/pull/4763) \\n- [Add ToJSON/FromJSON instances for ChainPoint](https://github.com/input-output-hk/cardano-node/pull/4686) \\n- [Derive Eq instance for AcquiringFailure](https://github.com/input-output-hk/cardano-node/pull/4683) \\n- [Export `fromShelleyBasedScript` from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4682) \\n- [Remove unnecessary validation of Data](https://github.com/input-output-hk/cardano-node/pull/4344) \\n- [Remove hint of \\"string\\" support for ScriptData](https://github.com/input-output-hk/cardano-node/pull/3775) \\n\\n### cardano-node\\n- [Conway hard forks on prot-ver 9](https://github.com/input-output-hk/cardano-node/pull/4988) \\n- [Reinstate -Werror for cardano-node and fix errors](https://github.com/input-output-hk/cardano-node/pull/4968) \\n- [Take all dependencies from Hackage or CHaP](https://github.com/input-output-hk/cardano-node/pull/4921) \\n- [Less verbose node-to-client and node-to-node version logging](https://github.com/input-output-hk/cardano-node/pull/4911) \\n- [Get AcceptedConnectionsLimit from the configuration](https://github.com/input-output-hk/cardano-node/pull/4902) \\n\\n### cardano-testnet\\n- [fix cardano-testnet Babbage genesis.json](https://github.com/input-output-hk/cardano-node/pull/4729)"},{"id":"2023-03-08-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-03-08-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-08-performance-and-tracing.md","source":"@site/blog/2023-03-08-performance-and-tracing.md","title":"Performance & tracing update","description":"* Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.","date":"2023-03-08T00:00:00.000Z","formattedDate":"March 8, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.805,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-03-08-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-03-08-node-cli-api"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-03-crypto"}},"content":"* Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.\\n* New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.\\n* Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.\\n* Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.\\n* Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.\\n\\n\\n# Performance\\n\\n### 1.35.6 release\\nBenchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.\\n\\n### Analysis pipeline\\nOur analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better\\ndifferentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.\\nAdditionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking\\ndata more easily accessible.\\n\\n### Open Sourcing\\nAs a prerequisite for going live with our benchmarking data, we\'re currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we\'ve begun working on a small visualization demo and interactive API documentation. Those will enable \\nthird parties to make use of that data much more easily, by having reliable guidelines and a working example.\\n\\n# Tracing\\nThe new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make\\nthe switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.\\n\\n# Infrastructure\\n\\n### Nomad backend\\nThe Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented."},{"id":"2023-03-03-crypto","metadata":{"permalink":"/cardano-updates/2023-03-03-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-crypto.md","source":"@site/blog/2023-03-03-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-03-03T00:00:00.000Z","formattedDate":"March 3, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.155,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-03-03-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-03-08-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-03-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.\\n* cardano-base: BLS branch is now ready for review. We are workign forward its merge. \\n* KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.\\n* Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs\\n## Low level summary\\n### Mithril\\n* Bumped to version [0.2.0](https://crates.io/crates/kes-summed-ed25519/0.2.0) the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using `mlock`.\\n* Opened [PR#783](https://github.com/input-output-hk/mithril/pull/783) to update dependency\\n* Improved testing for batch opening of mtree, [PR#773](https://github.com/input-output-hk/mithril/pull/773)\\n* Improved testing for batch verification of STM sigs [PR#774](https://github.com/input-output-hk/mithril/pull/774)\\n* RFP for crypto audit almost ready.\\n### cardano-base\\n* BLS12-381 branch finally ready for review [PR#266](https://github.com/input-output-hk/cardano-base/pull/266)\\n### KES agent\\nTeam off for one week. Other progress:\\n- Learning about raw direct-bearer abstraction. An interface for sockets in consensus.\\n- use that for direct ser/deser\\n- written those syntaxes for ouroboros (coming PR)\\n- the kes agent will depend on that. \\t\\n### Sidechains\\nProgress with familiarisation of Halo2 library to write circuits."},{"id":"2023-03-03-goedel","metadata":{"permalink":"/cardano-updates/2023-03-03-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-goedel.md","source":"@site/blog/2023-03-03-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-03-03T00:00:00.000Z","formattedDate":"March 3, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.815,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-03-03-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-03-03-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-03-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on drafts of two papers and one\\ntechnical report, improving the deltaQ tutorial, consulting on\\nperformance design, and the Djed paper has been accepted for\\npublication.\\n\\n## Details\\n\\n* Preparing draft of DeltaQSD algebra paper for FORTE 2023\\n\\n* Extending the technical report on which the above paper is based\\n\\n* Consulting with an external company on performance engineering of Plutus contracts\\n\\n* Planning improvements and collecting material for the deltaQ\\n  tutorial based on experience with systems that manage risk at\\n  multiple timescales\\n\\n* Preparing sections on the communication language and idempontency\\n  laws for draft paper about verifying design refinements for\\n  distributed system design\\n\\n* Studying Cardano chain sync protocol\\n\\n* \\"Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin\\n  Protocol\\" has been accepted for publication at IEEE ICBC 2023"},{"id":"2023-03-03-hydra","metadata":{"permalink":"/cardano-updates/2023-03-03-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-hydra.md","source":"@site/blog/2023-03-03-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-03-03T00:00:00.000Z","formattedDate":"March 3, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.19,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-03-03-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-03-03-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-03-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team released version\\n[0.9.0](https://github.com/input-output-hk/hydra/releases/tag/0.9.0) - a version\\nof the `hydra-node` with fully specified behavior of on-chain scripts and\\noff-chain head-logic, decreased costs for opening/closing a Head and scalable\\ncontestation deadline semantics. Check out the full release notes for details.\\n\\nFurthermore, they published the [monthly\\nreport](https://hydra.family/head-protocol/monthly/2023-03) of the Hydra project\\nand conducted a review meeting with an increasingly wider audience. The team\\nplans to extend invitations through the new Hydra\\n[#announcements](https://discord.gg/Bwdy2jNdm2) discord channel for the next\\nmonths, stay tuned!\\n\\n## What did the team achieve this week\\n\\n-   Monthly review meeting with report published [on website](https://hydra.family/head-protocol/monthly/2023-03)\\n-   Fixed smoke tests [#726](https://github.com/input-output-hk/hydra/pull/726)\\n-   Reduced the cost of opening/closing a Head (error codes [#748](https://github.com/input-output-hk/hydra/pull/748) + head reference script [#701](https://github.com/input-output-hk/hydra/pull/701))\\n-   Released version [0.9.0](https://github.com/input-output-hk/hydra/releases/tag/0.9.0)\\n-   Conducted a first experiment on mainnet compatibility [#713](https://github.com/input-output-hk/hydra/issues/713)\\n-   New discord category with [#announcements](https://discord.gg/Bwdy2jNdm2) channel\\n-   Received a demo about the Hydra for Voting project\\n-   Lightning talk on mutation-based testing (to be shared)\\n-   New [themes view](https://github.com/orgs/input-output-hk/projects/21/views/26) in on our roadmap and some rearranging as we align it with high-level objectives\\n-   Clarified things with researchers, but mostly identified action items for them\\n\\n## What are the goals of next week\\n\\n-   Redraw transaction graphs and address TODOs specification\\n-   Run hydraw with 0.9.0 on preprod\\n-   Make smoke tests on mainnet possible\\n-   Groom the explorer item\\n-   Unblock the auctions projecth with &ldquo;commit from script&rdquo; a solution"},{"id":"2023-03-03-ledger","metadata":{"permalink":"/cardano-updates/2023-03-03-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-03-ledger.md","source":"@site/blog/2023-03-03-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-03-03T00:00:00.000Z","formattedDate":"March 3, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.57,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-03-03-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-03-03-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-03-02-network"}},"content":"## High level summary\\n\\nWe have focused the last two weeks on CIP-1694, integration of the last several months of ledger\\nwork into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.\\n\\n## Low level summary\\n\\n### Conway rules\\n\\nWe made a major update to the conway era so that the implementation is now in sync with the spec\\nwith respect to the ratification and enactment logic.\\n\\nSee the notes in [pull-3291] for more details.\\n\\n### Constraint based generators\\n\\nThis week we hit a major milestone in our efforts to build out better property based testing\\nsupport for the main ledger properties.\\nThe new constraint based generators can now generate full ledger states with what is probably\\nvery close to the real constraints (if anything, it is under constrained).\\nNext we will work on generating a transaction in the context of a ledger state, which would allow\\nus to actually start using these generators for real tests.\\n\\nSee [pull-3219].\\n\\n### Preparing a release, now with proper versioning\\n\\nAfter quite some time, we are ready to release a version of ledger that will work with a new\\nversion of consensus, using CHaPs.\\n\\nSee [pull-3308].\\n\\n### Technical debt\\n\\n* We cleaned up the redeemer serialization code (to prevent future mistakes). See [pull-3269].\\n* We added a note to the Alonzo spec, specifying that the transaction inputs are\\n  lexicographically ordered in the Plutus script context. See [pull-3306].\\n* We fixed a problem with the address deserialiazation\\n  (we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).\\n  See [pull-3307].\\n* We fixed a problem with our nix build. See [pull-3311].\\n* We fixed a problem with our `NoThunks` tests. See [pull-3310].\\n* We improved our nightly tests. See [pull-3316].\\n\\n[pull-3219]: https://github.com/input-output-hk/cardano-ledger/pull/3219\\n[pull-3269]: https://github.com/input-output-hk/cardano-ledger/pull/3269\\n[pull-3291]: https://github.com/input-output-hk/cardano-ledger/pull/3291\\n[pull-3306]: https://github.com/input-output-hk/cardano-ledger/pull/3306\\n[pull-3307]: https://github.com/input-output-hk/cardano-ledger/pull/3307\\n[pull-3308]: https://github.com/input-output-hk/cardano-ledger/pull/3308\\n[pull-3310]: https://github.com/input-output-hk/cardano-ledger/pull/3310\\n[pull-3311]: https://github.com/input-output-hk/cardano-ledger/pull/3311\\n[pull-3316]: https://github.com/input-output-hk/cardano-ledger/pull/3316"},{"id":"2023-03-02-network","metadata":{"permalink":"/cardano-updates/2023-03-02-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-03-02-network.md","source":"@site/blog/2023-03-02-network.md","title":"Network Team Update","description":"High level summary","date":"2023-03-02T00:00:00.000Z","formattedDate":"March 2, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.85,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-03-02-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-03-03-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-24-hydra"}},"content":"## High level summary\\n\\nIn the current sprint the networking team focused on fixing bugs and pushing\\nforward implementation of eclipse evasion.  We also found a bug in our\\nsimulation testing setup (in integration of test node).  We also overviewed the\\nwork on extending handshake protocol which is delivered by Galois Inc.\\n\\nWe published `ouroboros-network-0.4.0.1` and\\n`ouroboros-network-protocols-0.3.0.0` to [CHaP][PR #147].\\n\\nWe also fixed a bug in `cardano-node` which results in not being able to\\nconfigure inbound connection limits, see [PR #4902].\\n\\nTogether with Karl Knutsson (CF) we realised an issue in `cardano-cli`: it\'s\\nvalidation of DNS names, IP address & ports when registering a stake pool\\nshould be more strict to protect against common mistakes which we identified on\\nthe chain.  See [issue #4929].\\n\\n## Detailed work log\\n\\nIn [PR #4385] we fixed two bugs in peer state actions.  First one results in\\na busy loop if demotion from hot to warm times outs.  This busy loop is\\neventually exited when mux exits (we reported this in our previous report).\\nThis fix made it to `1.35.6` release as well.\\n\\nIn addition the [PR #4385] also fixes another bug which results in `hot -> warm\\n-> hot` demotion / promotion busy loop.\\n\\nThe [PR #4385] also fixed a bug in a node only used in simulation which\\nresulted in not using `chain-sync` or `block-fetch` mini-protocols.  In the\\nreview process, we realised that the header-body split in the simulated node\\nrequires further work (see [PR #4419], which is under review).\\n\\nThe [PR #4385] also extend our generators, which together with the above fix,\\ncover the `hot -> warm -> hot` demotion / promotion busy loop.\\n\\nIn [PR #4419] we introduce a `ChainDB` for our simulation node, which plays\\nsimilar role to `ChainDB` in the `ouroboros-consensus`: a persistent (across\\nsimulated restarts) store of blocks which does chain selection.  This ensures\\nthat the simulated node is using `block-fetch` to download blocks announced by\\n`chain-sync` mini-protocol.\\n\\nWe also made progress with reviewing [PR #4019] - peer sharing.\\n\\nWe also fixed [issue #4370] - a connection manager test failure, see [PR #4384].\\n\\n[PR #147]: https://github.com/input-output-hk/cardano-haskell-packages/pull/147\\n[PR #4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[PR #4384]: https://github.com/input-output-hk/ouroboros-network/pull/4384\\n[PR #4385]: https://github.com/input-output-hk/ouroboros-network/pull/4385\\n[PR #4419]: https://github.com/input-output-hk/ouroboros-network/pull/4419\\n[PR #4902]: https://github.com/input-output-hk/cardano-node/pull/4902\\n[issue #4370]: https://github.com/input-output-hk/ouroboros-network/issues/4370\\n[issue #4929]: https://github.com/input-output-hk/cardano-node/issues/4929"},{"id":"2023-02-24-hydra","metadata":{"permalink":"/cardano-updates/2023-02-24-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-24-hydra.md","source":"@site/blog/2023-02-24-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-02-24T00:00:00.000Z","formattedDate":"February 24, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.93,"hasTruncateMarker":false,"authors":[{"name":"Franco Testagrossa","title":"Hydra Software Engineer","url":"https://github.com/ffakenz","imageURL":"https://github.com/ffakenz.png","key":"ffakenz"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-02-24-hydra","authors":"ffakenz","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-03-02-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-02-23-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team continue closing many gaps and aligning the\\nimplementation with the specification. More over, they have groomed a plan to\\nmake Hydra Mainnet compatible. Also, they continue moving forward with the\\ninternal auditing and have published some auditing guidelines to receive\\ncontributions from the community.\\n\\n## What did the team achieve this week\\n\\n- Completed [#452](https://github.com/input-output-hk/hydra/issues/452) (what is\\n  remaining in there)\\n- Aligned the Head protocol logic implementation with the specification\\n- Completed full minting policy implementation and spec\\n  [#720](https://github.com/input-output-hk/hydra/issues/720)\\n- Clarified message authentication with researchers\\n- Groomed what is left to do for Mainnet compatibility\\n  [#713](https://github.com/input-output-hk/hydra/issues/713) and drafted a\\n  0.10.0 version\\n- Added a tutorial by [@perturbing](https://github.com/perturbing/) to the\\n  website [LINK](https://hydra.family/head-protocol/docs/tutorial/)\\n- Published auditing guidelines\\n  [LINK](https://hydra.family/head-protocol/audit-guidelines)\\n- Made hydra-node work for macos\\n  [#746](https://github.com/input-output-hk/hydra/issues/746) and added support\\n  for building on aarch64\\n  [#673](https://github.com/input-output-hk/hydra/issues/673)\\n- Met with a potential customer of Hydra for Payments\\n\\n## What are the goals of next week\\n\\n- Have the monthly review meeting incl. the report\\n- Have smoke tests fixed and running regularly\\n- Release 0.9.0 with updated scripts\\n- Redraw transaction graphs for specification"},{"id":"2023-02-23-mithril","metadata":{"permalink":"/cardano-updates/2023-02-23-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-23-mithril.md","source":"@site/blog/2023-02-23-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-02-23T00:00:00.000Z","formattedDate":"February 23, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.47,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-02-23-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-24-hydra"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-02-23-performance-and-tracing"}},"content":"## High level overview\\nThe Mithril team released a new [`2306.0`](https://github.com/input-output-hk/mithril/releases/tag/2306.0) distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes\u2019 CLI that allows generating and signing an era marker\u2019s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.\\n\\n## Low level overview\\n- Released the new distribution [`2306.0`](https://github.com/input-output-hk/mithril/releases/tag/2306.0)\\n- Completed the epic that implements signer versions deployment monitoring [#718](https://github.com/input-output-hk/mithril/issues/718):\\n  - Completed the implementation an event producer/consumer via channel [#738](https://github.com/input-output-hk/mithril/issues/738)\\n  - Completed the creation of a database and its configuration to save the events on the consumer side [#740](https://github.com/input-output-hk/mithril/issues/740)\\n  - Completed the creation of events and sending them on the channel on the producer side [#741](https://github.com/input-output-hk/mithril/issues/741)\\n  - Completed the creation of the signer registration event [#742](https://github.com/input-output-hk/mithril/issues/742)\\n  - Completed the creation a query to extract the node versions stakes distribution [#743](https://github.com/input-output-hk/mithril/issues/743)\\n- Worked on the epic that implements eras behavior switch [#707](https://github.com/input-output-hk/mithril/issues/707):\\n  - Completed the loading of era reader adapters from config in the signer and the aggregator [#732](https://github.com/input-output-hk/mithril/issues/732)\\n  - Completed the implementation of an era cli command in the aggregator [#755](https://github.com/input-output-hk/mithril/issues/755)\\n  - Completed the implementation of a dynamic matrix of cases in CI end to end tests [#760](https://github.com/input-output-hk/mithril/issues/760)\\n- Fixed some bugs:\\n  - Fixed the unsupported `unixepoch()` function [#757](https://github.com/input-output-hk/mithril/issues/757)\\n  - Fixed the problem that prevented some signers from signing on the `testing-preview` network [#730](https://github.com/input-output-hk/mithril/issues/730)\\n  - Update SQLite version to `3.40` in aggregator infrastructure [#765](https://github.com/input-output-hk/mithril/issues/765)"},{"id":"2023-02-23-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-02-23-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-23-performance-and-tracing.md","source":"@site/blog/2023-02-23-performance-and-tracing.md","title":"Performance & tracing update","description":"* SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.","date":"2023-02-23T00:00:00.000Z","formattedDate":"February 23, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.245,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-02-23-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-02-23-mithril"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-02-22-consensus"}},"content":"* SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.\\n* Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.\\n* UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.\\n* New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.\\n* Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.\\n* Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.\\n\\n# Performance\\n\\n### SECP\\n1. For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.\\n2. The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.\\n3. The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. \\n\\n### UTxO-HD\\n1. After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.\\n2. We\'re currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.\\n\\n### 1.35.6 release\\nBenchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.\\n\\n# Tracing\\nWork on the new tracing system\'s introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.\\n\\n# Infrastructure\\n\\n### Nomad backend\\n1. Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.\\n2. Locality assumptions were removed and job monitoring was refactored.\\n3. To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.\\n4. We\'re currently evaluating different options for genesis distribution in said cluster.\\n\\n### NixOps backend\\nThe NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery."},{"id":"2023-02-22-consensus","metadata":{"permalink":"/cardano-updates/2023-02-22-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-22-consensus.md","source":"@site/blog/2023-02-22-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-02-22T00:00:00.000Z","formattedDate":"February 22, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.45,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-02-22-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-02-23-performance-and-tracing"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-02-22-node-cli-api"}},"content":"## High level summary\\n\\nDuring the past two weeks we got the results from the system level benchmarks\\nfor UTxO HD. They showed a substantial performance regression, so we spent some\\ntime analyzing the results. We found out the frequency at which ledger snapshots\\nwere taken was too high, so we requested the benchmarking team a new run with a\\nmore realistic snapshotting policy. We continued refactoring and improving the\\nprototype, and we released UTxO-HD related packages to CHaP.\\n\\nWe met with IOG researchers and networking specialists to discuss the Genesis\\ndesign, which was well received. We continued working on testing and\\nbenchmarking different Genesis prototypes.\\n\\nWe are also working on solving a test failure related to iterators. This work\\nderived in several improvements such as better documentation, a framework for\\nwriting unit (and regression) tests, and the possibility of debugging\\n`QuickCheck` counter examples in the REPL.\\n\\nFinally, we released `ouroboros-consensus` 0.2.0.0 and\\n`ouroboros-consensus-cardano` 0.3.0.0 to CHaP\\n\\n## Workstreams \\n\\n### UTxO HD Prototype \\n\\nWe got the results of the first system level benchmarks for UTxO HD. They seemed\\nto indicate a significant regression in performance. After looking into the\\nbenchmark logs we found that the benchmark runs took ledger state snapshots too\\noften, due to the default snapshotting policy depending on `k`, and `k` being so\\nsmall in the benchmark runs. Therefore, the next step is to re-run the\\nbenchmarks with a snapshotting policy that more closely resembles the one from\\nmainnet.\\n\\nAt the same time, we continued refactoring and cleaning up the prototype. \\n\\nAlso, we prepared the `anti-diff` packages (`fingertree-rm`, `diff-containers`,\\n`simple-semigroupoids`) and the `lmdb` related packages (`cardano-lmdb` and\\n`cardano-lmdb-simple`) to [CHaP][chap].\\n\\n### Genesis\\n\\nThe Genesis design was presented to the IOG researchers and Peter Thompson from\\nNSol. It was well received. They pointed out one blindspot, but we think it\'ll\\nbe relatively simple to mitigate.\\n\\nIn parallel, we continued developing test and benchmarks for the Genesis\\nprototypes. I particular we tested and implemented a potential fix for\\n[increased ChainDB dequeue timings][increased-dequeue-timings], which partly\\nbehaved as we expected, but still needs further investigation. Also we obtained\\n[new benchmarking data][new-bench-data] for the prototype.\\n\\n### Technical debt\\n\\nRelated to [#4183][pull-4183], we developed a [DSL][pull-4379] for specifying\\n`ChainDB` unit tests. This will allow us to better understand the\\ncounter-examples returned by QuickCheck tests, and to write [regression\\ntests][pull-4383] for them. Also, we [added a module][pull-4358] to enable\\nQuickCheck counter-examples to be run on the REPL, allowing for faster debugging\\nfeedback. Also, we improved the documentation related to followers\\n([#4372][pull-4372]).\\n\\nWe are also working on a design for optimizing the way we handle blocks from the\\nfuture.\\n\\n### Support\\n\\nWe released `ouroboros-consensus` 0.2.0.0 and `ouroboros-consensus-cardano`\\n0.3.0.0 to CHaP. Remember that we decided to split the packages related to\\nConsensus into two bundles, one with the core functionality, Cardano-agnostic\\ncode, and another bundle with instantiations specific to Cardano.\\n\\n[new-bench-data]: https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031\\n[increased-dequeue-timings]: https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022\\n[chap]: https://github.com/input-output-hk/cardano-haskell-packages\\n[pull-4358]: https://github.com/input-output-hk/ouroboros-network/pull/4358\\n[pull-4183]: https://github.com/input-output-hk/ouroboros-network/issues/4183\\n[pull-4372]: https://github.com/input-output-hk/ouroboros-network/pull/4372\\n[pull-4379]: https://github.com/input-output-hk/ouroboros-network/pull/4379\\n[pull-4383]: https://github.com/input-output-hk/ouroboros-network/pull/4383"},{"id":"2023-02-22-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-02-22-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-22-node-cli-api.md","source":"@site/blog/2023-02-22-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-02-22T00:00:00.000Z","formattedDate":"February 22, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.385,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-02-22-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-02-22-consensus"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-02-21-db-sync"}},"content":"# 2023-02-22 - 2023-03-07\\n\\n## High level summary\\n\\nGeneral bug fixes \\n\\n## Completed\\n\\n### docs\\n- [Fix some markdown links](https://github.com/input-output-hk/cardano-node/pull/4882)\\n- [Update changelog with PR4788 changes](https://github.com/input-output-hk/cardano-node/pull/4881)\\n\\n### CI & project maintenance\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Fix bug in hash computation in cardano-cli genesis create-cardano](https://github.com/input-output-hk/cardano-node/pull/4761)\\n- [Cleanup exports of cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/4636)\\n- [BUGFIX] - [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Export SubmitResult from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4753)\\n\\n### cardano-api\\n- [Remove pattern Tx](https://github.com/input-output-hk/cardano-node/pull/4901)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n\\n### cardano-testnet\\n\\n## In Progress\\n\\n## Documentation\\n- [Fix path to mkfiles.sh script in documentation](https://github.com/input-output-hk/cardano-node/pull/4949)\\n\\n## CI & project mainteance\\n- [New build complete job](https://github.com/input-output-hk/cardano-node/pull/4932)\\n- [Update ouroboros-network](https://github.com/input-output-hk/cardano-node/pull/4764)\\n\\n### cardano-cli\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n- [Read network ID from environment](https://github.com/input-output-hk/cardano-node/pull/4666)\\n- [CLI option to append additional signatures to a transactions](https://github.com/input-output-hk/cardano-node/pull/4647)\\n- [Cardano ping](https://github.com/input-output-hk/cardano-node/pull/4664)\\n- [Better error message for query utxo on oops](https://github.com/input-output-hk/cardano-node/pull/4777)\\n- [New --node-socket-path cli option](https://github.com/input-output-hk/cardano-node/pull/4910)\\n- [Fix qKesKesKeyExpiry to not always be null](https://github.com/input-output-hk/cardano-node/pull/4909)\\n- [Detect invalid counter and certificate](https://github.com/input-output-hk/cardano-node/pull/4880)\\n- [Straight line code for tx commands](https://github.com/input-output-hk/cardano-node/pull/4823)\\n- [New cardano-cli ping command.](https://github.com/input-output-hk/cardano-node/pull/4664)\\n- [Move cardano-ping from ouroboros-network to cardano-node project](https://github.com/input-output-hk/cardano-node/pull/4655)\\n\\n### cardano-api\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Remove simple script distinction](https://github.com/input-output-hk/cardano-node/pull/4763)\\n- [Combinators for TxBodyCon\u017btent and related types](https://github.com/input-output-hk/cardano-node/pull/4941)\\n- [Reduce number of calls to toLedgerPParams](https://github.com/input-output-hk/cardano-node/pull/4903)\\n- [Better error message for query utxo without oops 2](https://github.com/input-output-hk/cardano-node/pull/4825)\\n\\n### cardano-node\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)\\n- [Less verbose node-to-client and node-to-node version logging](https://github.com/input-output-hk/cardano-node/pull/4911)\\n\\n### cardano-testnet\\n- [Use Haskell variables for passing values](https://github.com/input-output-hk/cardano-node/pull/4845)\\n- [Re-enable kes-period-info test](https://github.com/input-output-hk/cardano-node/pull/4879)\\n- [Transaction debug script command](https://github.com/input-output-hk/cardano-node/pull/3783)"},{"id":"2023-02-21-db-sync","metadata":{"permalink":"/cardano-updates/2023-02-21-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-21-db-sync.md","source":"@site/blog/2023-02-21-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-02-21T00:00:00.000Z","formattedDate":"February 21, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.75,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-02-21-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-02-22-node-cli-api"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-02-17-crypto"}},"content":"## High level summary\\n\\nThe db-sync team created a new tag `13.1.0.2` which is ready to release.\\nWe also investigated and had the first working UTxO-HD integration which is one\\nof the potential future risks for db-sync.\\n\\n## Low level summary\\n\\n- Integrated the UTxO-HD feauture branch in `kderme/utxo-hd-1`. This doesn\'t\\nuse the full on disk storage but keeps things in memory and the plan is to keep\\nit this way for the first iteration. The integration still has some performance\\nissues which we investigate\\n- Created tag `13.1.0.2` which upgrades the dependencies of db-sync\\n- Fixed an issue related to errors appearing in SMASH\\n[#1353](https://github.com/input-output-hk/cardano-db-sync/pull/1353)\\n- Continued with ghc-9.2 integration\\n[#1339](https://github.com/input-output-hk/cardano-db-sync/pull/1339)\\n- Worked on an new fixing procedure for\\n[#1348](https://github.com/input-output-hk/cardano-db-sync/issues/1348).\\nWe try to make these procedures work also on older schema version, without the\\nneed to migrate to newer schema, which can be very useful for fixing existing\\nsnapshots."},{"id":"2023-02-17-crypto","metadata":{"permalink":"/cardano-updates/2023-02-17-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-crypto.md","source":"@site/blog/2023-02-17-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-02-17T00:00:00.000Z","formattedDate":"February 17, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.43,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-02-17-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-02-21-db-sync"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-02-17-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril\'s core library (decided to add audit of KES). Design proposal for viable registration.\\n* cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.\\n* KES agent: using snockets and making things testable in IOSim\\n* MuSig2: started implementation in rust.\\n\\n## Low level summary\\n\\n### Mithril\\n* Transmute helpers merged [PR#722](https://github.com/input-output-hk/mithril/pull/722)\\n* We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. \\n* We are working in a modification of KES to require caller to allocate the secret key buffer.\\n* Proposed a solution for signer registration of [Mithril](https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost).\\n### cardano-base\\n* Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 [proof](https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks).\\n\\t* Results are promising, with using only 23% of the execution budget to verify a realistic proof. \\n\\t* Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.\\n* KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.\\n* Conversion finally merged [PR#344](https://github.com/input-output-hk/cardano-base/pull/344).\\n\\n### KES agent\\n* Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation\\n* Figuring out how to go from fake file descriptor to write the raw bytes\\n\\n### MuSig2\\n* Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental."},{"id":"2023-02-17-goedel","metadata":{"permalink":"/cardano-updates/2023-02-17-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-goedel.md","source":"@site/blog/2023-02-17-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-02-17T00:00:00.000Z","formattedDate":"February 17, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.53,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-02-17-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-02-17-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-17-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been working on drafts of two papers and one\\ntechnical report, distributivity properties of deltaQ, and consulting\\non performance design with the Marlowe team.\\n\\n## Details\\n\\n* Processing reviews on performance engineering paper and planning\\n  paper revisions accordingly\\n\\n* Investigating distributivity properties of DeltaQ\\n\\n* Preparing sections on the thorn calculus and idempotency laws for\\n  draft paper about verifying design refinements for distributed\\n  system design\\n\\n* Consulting on performance design with Marlowe team"},{"id":"2023-02-17-hydra","metadata":{"permalink":"/cardano-updates/2023-02-17-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-hydra.md","source":"@site/blog/2023-02-17-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-02-17T00:00:00.000Z","formattedDate":"February 17, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.75,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-02-17-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-02-17-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-02-17-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team completed work on dealing differently with contests\\nduring the contestation period. These will now always push out the deadline and\\nhence contestation periods are easier to pick (depending on the network a Head\\nruns on). Furthermore, they added an important acceptance test and completed\\ninternal refactoring of the protocol logic making future changes easier.\\n\\n## What did the team achieve this week\\n\\n-   Push contestation deadline on each contest [#716](https://github.com/input-output-hk/hydra/pull/716)\\n-   Wrote an acceptance (property) test &ldquo;can always close/fanout when collect is successful&rdquo;\\n-   Internal refactoring of our `HeadLogic`\\n-   Groomed remaining things from [#452](https://github.com/input-output-hk/hydra/issues/452) into dedicated features\\n\\n## What are the goals of next week\\n\\n-   Complete full minting policy [#720](https://github.com/input-output-hk/hydra/issues/720)\\n-   Release 0.9.0 with updated scripts\\n-   Plan mainnet milestone and a 0.10.0 version\\n-   Redraw transaction graphs for specification (upon feedback)\\n-   Have smoke tests fixed and running regularly"},{"id":"2023-02-17-ledger","metadata":{"permalink":"/cardano-updates/2023-02-17-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-ledger.md","source":"@site/blog/2023-02-17-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-02-17T00:00:00.000Z","formattedDate":"February 17, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.33,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-02-17-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-17-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-02-17-network"}},"content":"## High level summary\\n\\nThis past two weeks saw many months worth of ledger changes integrated with the `cardano-base`\\nand `ouroboros-network` repositories.\\nThe vast majority of the effort involved all the changes to the ledger serialization libraries\\n(and the interplay with `cardano-base`) which now support proper versioning.\\nSupporting the conway ledger era, and in particular allowing the ledger state to transition\\nto a whole new system of governance, also played a noticeable part in the integration.\\n\\nBesides the integration work, the team continues to address technical debt, improve the\\ndocumentation, make our testing infrastructure better (such as experimenting with better\\nnightly tests), and formally specifying more parts of CIP-1694.\\n\\n## Lower level summary\\n\\n### Integration work\\n\\nBelow is all the integration work completed, which will enable a release to node from\\nthe current ledger master. Many thanks to\\n[Alexey](https://github.com/lehins) for this colossal undertaking!\\n\\n* [pull-3303]\\n* [pull-3302]\\n* [pull-3300]\\n* [pull-3299]\\n* [pull-3298]\\n* [pull-3297]\\n* [pull-3292]\\n* [pull-3289]\\n* [pull-3288]\\n* [pull-3279]\\n* [pull-3282]\\n* [pull-4349]\\n\\n### Technical debt\\n\\nStarting in major protocol version 9, zero-valued multi-assets will no longer be permitted\\nin the CBOR specification. See [pull-3241].\\n\\nWe now have our `.cabal` files being checked for a consistent formatting given by\\n`cabal format` in our CI. See [pull-3286].\\n\\nWe are still experimenting with better nightly tests for our long running\\nproperty based tests. See [pull-3276] and [pull-3296].\\n\\n### Small documentation improvements\\n\\nThe hand proofs of the preservation ADA property have been added back to the\\nShelley ledger specification. See [pull-3295].\\n\\nWe have clarified how the script integrity hash is computed in the CDDL description.\\nSee [pull-3290].\\n\\n### Specifying CIP-1694\\n\\nOur new formal specifications backed by Agda have seen a lot of progress!\\nUpgrading to Agda 2.6.3 fixed our main build infrastructure problems,\\nand we no longer have to rely on our custom fork. See [pull-50].\\n\\nOur progress on formally specifying CIP-1694 can be followed here:\\n* in Agda: [pull-40]\\n* the corresponding Haskell: [pull-3291]\\n\\n### Constraint based testing\\n\\nWe are still actively working on our new constraint based property testing framework.\\nWe have nearly all of the constraints for an entire ledger state\\nhooked into generators, and tests that the generators do indeed obey the constraints.\\nThe variable count in the constraints is over 100!\\nThere is still much work to do on shrinking, making the generators faster,\\nand writing actual property tests for the ledger, but the approach still seems viable and\\nwe are hopeful that it could replace our trace generators.\\nThe WIP can be followed here: [pull-3219].\\n\\n[pull-3241]: https://github.com/input-output-hk/cardano-ledger/pull/3241\\n[pull-3295]: https://github.com/input-output-hk/cardano-ledger/pull/3295\\n[pull-3290]: https://github.com/input-output-hk/cardano-ledger/pull/3290\\n[pull-3286]: https://github.com/input-output-hk/cardano-ledger/pull/3286\\n\\n[pull-3303]: https://github.com/input-output-hk/cardano-ledger/pull/3303\\n[pull-3302]: https://github.com/input-output-hk/cardano-ledger/pull/3302\\n[pull-3300]: https://github.com/input-output-hk/cardano-ledger/pull/3300\\n[pull-3299]: https://github.com/input-output-hk/cardano-ledger/pull/3299\\n[pull-3298]: https://github.com/input-output-hk/cardano-ledger/pull/3298\\n[pull-3297]: https://github.com/input-output-hk/cardano-ledger/pull/3297\\n[pull-3292]: https://github.com/input-output-hk/cardano-ledger/pull/3292\\n[pull-3289]: https://github.com/input-output-hk/cardano-ledger/pull/3289\\n[pull-3288]: https://github.com/input-output-hk/cardano-ledger/pull/3288\\n[pull-3279]: https://github.com/input-output-hk/cardano-ledger/pull/3279\\n[pull-3282]: https://github.com/input-output-hk/cardano-ledger/pull/3282\\n[pull-3291]: https://github.com/input-output-hk/cardano-ledger/pull/3291\\n[pull-3276]: https://github.com/input-output-hk/cardano-ledger/pull/3276\\n[pull-3296]: https://github.com/input-output-hk/cardano-ledger/pull/3296\\n[pull-3219]: https://github.com/input-output-hk/cardano-ledger/pull/3219\\n\\n[pull-50]: https://github.com/input-output-hk/formal-ledger-specifications/pull/50\\n[pull-40]: https://github.com/input-output-hk/formal-ledger-specifications/pull/40\\n\\n[pull-4349]: https://github.com/input-output-hk/ouroboros-network/pull/4349"},{"id":"2023-02-17-network","metadata":{"permalink":"/cardano-updates/2023-02-17-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-network.md","source":"@site/blog/2023-02-17-network.md","title":"Network Team Update","description":"High level summary","date":"2023-02-17T00:00:00.000Z","formattedDate":"February 17, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":0.865,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-02-17-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-02-17-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-10-hydra"}},"content":"## High level summary\\n\\nRecently QA found a bug in P2P code, which results in busy loops.  We added one\\nfix to `1.35.6` release, another one will likely be part of next release.  The\\nfirst one is already included in `ouroboros-network-0.3.0.1` release.  These\\nbugs could only affect nodes which are out of sync and thus should not impose\\nrisk on well maintained nodes on mainnet.  We also advertise to deploy at most\\none of the relays as a P2P node, which shields from possible consequences.\\n\\nWe recently finished design phase of eclipse evasion and we started\\nimplementing it (see [issue #3886] for progress).\\n\\nGalois finished implementing Handshake extension which will allow to query\\nnetwork protocol versions (see [pr #4256]).\\n\\nWe also recently released a newer set of network packages to be integrated with\\n`cardano-node` `master` branch, this includes:\\n    * monoidal-synchronisation-0.1.0.2\\n    * cardano-client-0.1.0.2\\n    * network-mux-0.3.0.0\\n    * ouroboros-network-api-0.1.0.0\\n    * ouroboros-network-protocols-0.2.0.0\\n    * ouroboros-network-testing-0.2.0.1\\n    * ouroboros-network-mock-0.1.0.0\\n    * ouroboros-network-framework-0.3.0.0\\n    * ouroboros-network-0.4.0.0 (it doesn\'t not yet include the fix we included\\n      in `0.3.0.1`)\\n\\n[issue #3886]: https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&itemId=19819205\\n[pr #4256]: https://github.com/input-output-hk/ouroboros-network/pull/4256"},{"id":"2023-02-10-hydra","metadata":{"permalink":"/cardano-updates/2023-02-10-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-10-hydra.md","source":"@site/blog/2023-02-10-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-02-10T00:00:00.000Z","formattedDate":"February 10, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.14,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-02-10-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-02-17-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-02-09-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team closed several gaps to align the Hydra scripts\\nimplementation further with the specification. This also resulted in a slight\\nimprovement on Hydra script size and costs. They consequently analysed the\\nasymptotic complexity of collect and fanout and how they relate. Also plutus-tx\\nprofiling toolchain was evaluated and set up for future improvements on Hydra\\non-chain performance. In discussions with researchers and internal auditors,\\nthey also uncovered next steps on further securing the Head protocl using a\\n\\"full\\" minting policy.\\n\\n## What did the team achieve this week\\n\\n-   Closed several gaps to align script implementation with specification [#452](https://github.com/input-output-hk/hydra/issues/452)\\n    -   Allow contest only once [#680](https://github.com/input-output-hk/hydra/pull/680)\\n    -   Optimization through head output at index 0 [#700](https://github.com/input-output-hk/hydra/pull/700)\\n    -   Value is preserved [#702](https://github.com/input-output-hk/hydra/pull/702) + optimized exact value equality [#709](https://github.com/input-output-hk/hydra/pull/709)\\n-   Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to [#721](https://github.com/input-output-hk/hydra/pull/721)\\n    ![](https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png)\\n-   Fixed our tooling around the Haskell language server\\n-   Discussed full minting policy with researchers\\n-   Started grooming \u201cwhat we need for mainnet\u201d on [this](https://github.com/input-output-hk/hydra/issues/713) idea ticket and [milestone](https://github.com/input-output-hk/hydra/milestone/8)\\n\\n## What are the goals of next week\\n\\n-   Implement full minting policy\\n-   All remaining protocol discrepancies are implemented or groomed as individual features\\n-   Ideally release 0.9.0 with updated scripts\\n-   Discuss what we need for mainnet (milestone planning)\\n-   Redraw transaction graphs for specification (upon feedback)"},{"id":"2023-02-09-mithril","metadata":{"permalink":"/cardano-updates/2023-02-09-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-09-mithril.md","source":"@site/blog/2023-02-09-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-02-09T00:00:00.000Z","formattedDate":"February 9, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.01,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-02-09-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-10-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-02-08-consensus"}},"content":"## High level overview\\nThe Mithril team released a new [`2304.1`](https://github.com/input-output-hk/mithril/releases/tag/2304.1) distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.\\n\\nFinally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version `1.35.5` on their `devnet` and infrastructure.\\n\\n## Low level overview\\n- Released the new distribution [`2304.1`](https://github.com/input-output-hk/mithril/releases/tag/2304.1)\\n- Fixed a bug that prevented some signers to sign with `2304.0-prerelease` [#716](https://github.com/input-output-hk/mithril/issues/716)\\n- Completed the implementation of an `EraChecker` that checks if an era is active [#708](https://github.com/input-output-hk/mithril/issues/708)\\n- Completed the implementation of an `EraReader` that gathers era activation data [#709](https://github.com/input-output-hk/mithril/issues/709)\\n- Completed the implementation of an `EraReader` adapter with on chain transaction as source [#710](https://github.com/input-output-hk/mithril/issues/710)\\n- Completed the relational design of the aggregator store [#476](https://github.com/input-output-hk/mithril/issues/476)\\n- Completed adding a new SPO on the `testing-preview` network [#729](https://github.com/input-output-hk/mithril/issues/729)\\n- Completed the upgrade of the Cardano node to `1.35.5` [#725](https://github.com/input-output-hk/mithril/issues/725)\\n- Fixed flakiness in the CI [#734](https://github.com/input-output-hk/mithril/issues/734)"},{"id":"2023-02-08-consensus","metadata":{"permalink":"/cardano-updates/2023-02-08-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-consensus.md","source":"@site/blog/2023-02-08-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-02-08T00:00:00.000Z","formattedDate":"February 8, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.5,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-02-08-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-02-09-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-02-08-node-cli-api"}},"content":"## High level summary\\n\\nWe continue refactoring the UTxO HD prototype while we wait for the system level\\nbenchmarks. We have created a new repository that contains the `anti-diff`\\npackages used in this prototype.\\n\\nOn the Genesis front, we are preparing another meeting with the researchers to\\naudit the implementation design, and we continued working on basic tests and\\nsimplifications.\\n\\nDuring the past two weeks we also introduced two new tools. One for dumping CBOR\\nencoded blocks to JSON, and another to serve a local immutable DB.\\n\\n## Workstreams \\n\\n### UTxO HD Prototype \\n\\nWe are in the process of refactoring the UTxO HD prototype, while we wait for\\nthe system level benchmarks to confirm if the performance of the prototype is\\nsatisfactory.\\n\\nWe also set up a repository for the [`anti-diff`][anti-diff] package, which\\nrequired us to refactor the code, write documentation, and prepare a release to\\n[CHaP][chap].\\n\\n### Genesis\\n\\nWe worked on [basic tests][issue-4347] for the _Limit on Eagerness_ property of\\nGenesis. We also introduced further robustness and simplifications in the\\nGenesis Density governor. Finally, we developed a presentation to engage again\\nwith the researchers on our Genesis implementation design.\\n\\n### Technical debt\\n\\n### Fostering collaboration \\n\\nWe are in the process of [polishing][pull-6] the `ouroboros-consensus`\\ndocumentation site, which we will use a the entry point for Consensus related\\ndocumentation. The first version will not be complete, but we plan on\\nsystematically improving it.\\n\\n### Support\\n\\nWe [added a tool][pull-4335] to `ouroboros-consensus-cardano-tools` which allows\\nto dump the Chain DB blocks or any given CBOR encoded blocks as JSON.\\n\\nWe also added [another tool][pull-4339] that serves an existing immutable DB via\\nBlockFetch and ChainSync. This tool can help in assisting our local benchmarking\\nefforts (for instance Genesis\' ChainSync jumping prototype).\\n\\n\\n[pull-6]: https://github.com/input-output-hk/ouroboros-consensus/pull/6\\n[pull-4335]: https://github.com/input-output-hk/ouroboros-network/pull/4335\\n[pull-4339]: https://github.com/input-output-hk/ouroboros-network/pull/4339 \\n[issue-4347]: https://github.com/input-output-hk/ouroboros-network/issues/4347\\n[anti-diff]: https://github.com/input-output-hk/anti-diffs\\n[chap]: https://github.com/input-output-hk/cardano-haskell-packages"},{"id":"2023-02-08-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-02-08-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-node-cli-api.md","source":"@site/blog/2023-02-08-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-02-08T00:00:00.000Z","formattedDate":"February 8, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.095,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-02-08-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-02-08-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-02-08-performance-and-tracing"}},"content":"# 2023-02-08 - 2023-02-21\\n\\n## High level summary\\nMore maintenance and resolving raised issues.\\n\\n## Completed\\n\\n### docs\\n\\n### CI & project maintenance\\n- [Remove use of multiline literals](https://github.com/input-output-hk/cardano-node/pull/4889)\\n- [Markdown links CI check](https://github.com/input-output-hk/cardano-node/pull/4775)\\n- [Date ranges for copyright](https://github.com/input-output-hk/cardano-node/pull/4755)\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Re-add support for decoding GenesisExtendedKey text envelope](https://github.com/input-output-hk/cardano-node/pull/4894)\\n- [Disallow empty cost model for create update proposal](https://github.com/input-output-hk/cardano-node/pull/4885)\\n- [Refactor code using onLeft and onNothing](https://github.com/input-output-hk/cardano-node/pull/4815)\\n\\n### cardano-api\\n- [Simplify SerialiseAsRawBytes type class](https://github.com/input-output-hk/cardano-node/pull/4876)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n\\n## In Progress\\n\\n## CI & project mainteance\\n\\n### cardano-cli\\n- [Fix bug in hash computation in cardano-cli genesis create-cardano](https://github.com/input-output-hk/cardano-node/pull/4761)\\n- [Cleanup exports of cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/4636)\\n- [BUGFIX] - [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n- [Read network ID from environment](https://github.com/input-output-hk/cardano-node/pull/4666)\\n- [CLI option to append additional signatures to a transactions](https://github.com/input-output-hk/cardano-node/pull/4647)\\n- [Cardano ping](https://github.com/input-output-hk/cardano-node/pull/4664)\\n- [Better error message for query utxo on oops](https://github.com/input-output-hk/cardano-node/pull/4777)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Remove simple script distinction](https://github.com/input-output-hk/cardano-node/pull/4763)\\n- [Export SubmitResult from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4753)\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)\\n\\n### cardano-testnet\\n- [Use Haskell variables for passing values](https://github.com/input-output-hk/cardano-node/pull/4845)"},{"id":"2023-02-08-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-02-08-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-08-performance-and-tracing.md","source":"@site/blog/2023-02-08-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-02-08T00:00:00.000Z","formattedDate":"February 8, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":2.445,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-02-08-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-02-08-node-cli-api"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-02-03-crypto"}},"content":"## High level summary\\n\\n1. SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we\'re currently running what we consider the final benchmark, to validate the underlying assumptions.\\n2. Release benchmarking:  we\'ve performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.\\n3. New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.\\n4. New tracing:  before going live, we\'re performing the documentation update, as well as reworking the end user migration guide.\\n5. Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.\\n6. Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.\\n7. Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.\\n\\n## Performance\\n\\nWe are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:\\n\\n- we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,\\n- after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,\\n- finally, we\'re redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.\\n\\nIn addition, we started benchmarks of the 1.35.6 release.\\n\\n## Tracing\\n\\nA rework of the new tracing system\'s internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.\\n\\nSpecifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.\\n\\n## Infrastructure\\n\\nOn the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we\'ll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.\\n\\nThe work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.\\n\\nThe Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops."},{"id":"2023-02-03-crypto","metadata":{"permalink":"/cardano-updates/2023-02-03-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-crypto.md","source":"@site/blog/2023-02-03-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-02-03T00:00:00.000Z","formattedDate":"February 3, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":2.47,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-02-03-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-02-08-performance-and-tracing"},"nextItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-02-03-goedel"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril\'s core library. Exploring future paths of mithril. \\n* cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  \\n* KES agent: using snockets and making things testable in IOSim \\n* MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.\\n\\n## Low level summary\\n\\n### Mithril\\n* Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing [PR#722](https://github.com/input-output-hk/mithril/pull/722)\\n* We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.\\n* We are exploring possible paths of how mithril could be used \'as-a-service\'. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.\\n### cardano-base\\n* There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it\'s trade-offs. Seems that the most interesting curve to have on main-net is still 381. \\n* The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.\\n* The update VRF [PR#341](https://github.com/input-output-hk/cardano-base/pull/341) is finally merged, and we are ready to merge [PR#344](https://github.com/input-output-hk/cardano-base/pull/344), which implements conversion functions from the compatible types between Praos and PraosBatchCompat.\\n\\n### KES agent\\n* Use of snockets to send the data directly from the socket to secure memory. \\n* We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives\\n* Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.\\n\\n### MuSig2\\nThe GitHub Action [linelint](https://github.com/fernandrone/linelint) is used to check the files.\\n* A new job for linting is added to the file `/.github/workflows/ci.yml`. The rules are configured in the file `/.github/workflows/.linelint.yml`. Some files from the configuration of `libsecp` were failing, so in the rules in `.linelint.yml` the failing files are denoted to be ignored by the linter.\\n* Folders are reorganized. We created a folder to handle the example. This folder includes the `examplemusig2.c`, a distinct `config.h`, and `helper.c`. The example is enhanced by implementing the functions in the helper for the configuration given in `config.h`.  The number of messages is different than the tests. The example is made more generic to run with a loop."},{"id":"2023-02-03-goedel","metadata":{"permalink":"/cardano-updates/2023-02-03-goedel","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-goedel.md","source":"@site/blog/2023-02-03-goedel.md","title":"Goedel Team Update","description":"The team works on applied research and consulting in formal methods","date":"2023-02-03T00:00:00.000Z","formattedDate":"February 3, 2023","tags":[{"label":"goedel","permalink":"/cardano-updates/tags/goedel"}],"readingTime":0.57,"hasTruncateMarker":false,"authors":[{"name":"James Chapman","title":"Head of Formal Methods","url":"https://github.com/jmchapman","imageURL":"https://github.com/jmchapman.png","key":"jmchapman"}],"frontMatter":{"title":"Goedel Team Update","slug":"2023-02-03-goedel","authors":"jmchapman","tags":["goedel"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-02-03-crypto"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-03-hydra"}},"content":"The team works on applied research and consulting in formal methods\\nthat is directly applicable to evidence based engineering in Core Tech\\nand beyond.\\n\\n## High level summary\\n\\nThis sprint the team has been preparing several papers for peer review\\nand knowledge sharing and consulting within IO and the community.\\n\\n## Details\\n\\n* R&D Seminar on experience participating in a member based organisation\\n* Full day tutorial on performance engineering presented at HiPEAC\\n  2023 conference\\n* Finished preparing and submitted a paper on performance engineering\\n  to an ACM workshop\\n* Preparing a draft paper for future submission about verifying design\\n  refinements for distributed system design\\n* Consulting on performance design of other IO projects"},{"id":"2023-02-03-hydra","metadata":{"permalink":"/cardano-updates/2023-02-03-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-03-hydra.md","source":"@site/blog/2023-02-03-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-02-03T00:00:00.000Z","formattedDate":"February 3, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.12,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-02-03-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Goedel Team Update","permalink":"/cardano-updates/2023-02-03-goedel"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-02-02-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team completed the Hydra specification with a section about\\nrollbacks and updated graphs\\n([#448](https://github.com/input-output-hk/hydra/issues/448)). In a next step,\\nthe specification will be made more approachable and an open standard. They\\nimproved their `hydra-cluster` tool to launch a local `--devnet` sandbox\\nenvironment and continued aligning the `hydra-plutus` scripts with the\\nspecification by hardening the checks on `close` and `contest` transactions.\\n\\n## What did the team achieve this week\\n\\n- Completed the specification with a section about rollbacks and updated graphs\\n    [#448](https://github.com/input-output-hk/hydra/issues/448), with a follow-up on making it more approachable and an open standard.\\n- Continued spec review with internal auditor and incorporated changes.\\n- Talked to TxPipe about how Demeter and Hydra could work together\\n- The `hydra-cluster` executable can be used to launch a local `--devnet` sandbox environment.\\n- Reproduced the \u201chead being stuck on network outage\u201d bug\\n    - relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.\\n- Progressed with higher velocity by addressing more and more gaps [#677](https://github.com/input-output-hk/hydra/pull/677)\\n\\n## What are the goals of next week\\n\\n- Upstream our JSON instances to the ledger\\n- Close all transaction security related on-chain gaps\\n- Ideally release 0.9.0 with updated scripts\\n- Groom & plan (or not) protocol changes yielded from specification discussions -> updated roadmap"},{"id":"2023-02-02-ledger","metadata":{"permalink":"/cardano-updates/2023-02-02-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-02-ledger.md","source":"@site/blog/2023-02-02-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-02-02T00:00:00.000Z","formattedDate":"February 2, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.23,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-02-02-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-02-03-hydra"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-27-hydra"}},"content":"## High level summary\\n\\nMuch of the work the past two weeks involved integration efforts,\\ncleaning up and debugging some serialization issues,\\nadding tests, and work on large projects that are still ongoing.\\nWe also released a CIP this week that aims to make the ledger\\na registered CIP category.\\n\\n## Lower level summary\\n\\n### Ledger evolution CIP\\n\\nWe published a\\n[CIP](https://github.com/cardano-foundation/CIPs/pull/456)\\nthat will make the Cardano ledger a registered category of the CIP process.\\n\\n### Serialization issues\\n\\nWe had previously thought that we had found a serialization problem with the redeemers,\\nbut it turned out to just be particularly confusing code.\\nWe have now clarified the issue for the future.\\n\\nSee [pull-3263], [pull-3269], and [pull-3268].\\n\\nStarting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.\\n\\nSee [pull-3277].\\n\\n### New tests\\n\\nWe added a new property test suite for some of our custom containers.\\n\\nSee [pull-3270].\\n\\n### Progress on a better cost model serialization situation.\\n\\nWe are still working our way through [issue-2902].\\nTowards this end, we are now properly gating the new flexible encoders\\nuntil version 9.\\n\\nSee [pull-3274].\\n\\n### Nightly tests\\n\\nWe are still experimenting with moving more CI actions to GitHub actions.\\n\\nSee [pull-3276].\\n\\n### Constraint based generators\\n\\nWe continue to add to our proof of concept for constraint based generators.\\nSee the previous ledger update for more information about this project.\\n\\n[pull-3263]: https://github.com/input-output-hk/cardano-ledger/pull/3263\\n[pull-3268]: https://github.com/input-output-hk/cardano-ledger/pull/3268\\n[pull-3269]: https://github.com/input-output-hk/cardano-ledger/pull/3269\\n[pull-3270]: https://github.com/input-output-hk/cardano-ledger/pull/3270\\n[pull-3274]: https://github.com/input-output-hk/cardano-ledger/pull/3274\\n[pull-3277]: https://github.com/input-output-hk/cardano-ledger/pull/3277\\n[pull-3276]: https://github.com/input-output-hk/cardano-ledger/pull/3276\\n[issue-2902]: https://github.com/input-output-hk/cardano-ledger/issues/2902"},{"id":"2023-01-27-hydra","metadata":{"permalink":"/cardano-updates/2023-01-27-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-27-hydra.md","source":"@site/blog/2023-01-27-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-01-27T00:00:00.000Z","formattedDate":"January 27, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.945,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-01-27-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-02-02-ledger"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-01-26-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team had a monthly review meeting with their stakeholders,\\ncontributors and interested people from the community. The monthly repot for\\n[January 2023](https://hydra.family/head-protocol/monthly/2023-01) is a digest\\nof the things presented and also includes a summary of the meeting. The Hydra\\nspecification was getting discussed and the team is incorporating suggested\\nchanges of reviewers. Last but not least, they compute and publish script\\ninformation on every PR and also on the\\n[website](https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary)\\nnow.\\n\\n## What did the team achieve this week\\n\\n-   Had the monthly review meeting with a broader audience\\n-   Published the monthly report for [January 2023](https://hydra.family/head-protocol/monthly/2023-01)\\n-   Reviewed the spec and discussed individual aborts with researchers\\n-   Compute and publish script information along benchmarks on every PR and [website](https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary)\\n\\n## What are the goals of next week\\n\\n-   Add rollback section to Hydra spec, update pictures and publish it as part of repository\\n-   Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.\\n-   Groom & plan actions required for a maintainable Head explorer + break down &ldquo;align gaps&rdquo; feature."},{"id":"2023-01-26-mithril","metadata":{"permalink":"/cardano-updates/2023-01-26-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-26-mithril.md","source":"@site/blog/2023-01-26-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-01-26T00:00:00.000Z","formattedDate":"January 26, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.175,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-01-26-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-27-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-01-25-consensus"}},"content":"## High level overview\\nThe Mithril team released a new [`2302.0`](https://github.com/input-output-hk/mithril/releases/tag/2302.0) distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.\\n\\nFinally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.\\n\\n## Low level overview\\n- Released the new distribution [`2302.0`](https://github.com/input-output-hk/mithril/releases/tag/2302.0)\\n- Implemented a backward/forward compatibility mechanism for API messages [#688](https://github.com/input-output-hk/mithril/issues/688):\\n  - Implement the mechanism for the signer registration [#689](https://github.com/input-output-hk/mithril/issues/689)\\n  - Implement the mechanism for the signature registration [#693](https://github.com/input-output-hk/mithril/issues/693)\\n  - Implement the mechanism for epoch settings [#695](https://github.com/input-output-hk/mithril/issues/695)\\n  - Implement the mechanism for certificate pending [#696](https://github.com/input-output-hk/mithril/issues/696)\\n  - Implement the mechanism for certificate [#697](https://github.com/input-output-hk/mithril/issues/697)\\n  - Implement the mechanism for snapshots list [#698](https://github.com/input-output-hk/mithril/issues/698)\\n  - Implement the mechanism for snapshot [#699](https://github.com/input-output-hk/mithril/issues/699)\\n  - Update enforcement of API version with Semver [#705](https://github.com/input-output-hk/mithril/issues/705)\\n- Completed the PoC implementation of backward compatibility with `protobuf` [#677](https://github.com/input-output-hk/mithril/issues/677)\\n- Completed the PoC implementation of backward compatibility with `avro` [#678](https://github.com/input-output-hk/mithril/issues/678)\\n- Completed the PoC to Read/Write transaction on chain for Era activations [#672](https://github.com/input-output-hk/mithril/issues/672)\\n- Completed the upgrade Cardano devnet to 1.35.4 [#523](https://github.com/input-output-hk/mithril/issues/523)"},{"id":"2023-01-25-consensus","metadata":{"permalink":"/cardano-updates/2023-01-25-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-25-consensus.md","source":"@site/blog/2023-01-25-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-01-25T00:00:00.000Z","formattedDate":"January 25, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.27,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-01-25-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-01-26-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-01-25-node-cli-api"}},"content":"## High level summary\\n\\nDuring the past two weeks, the consensus team finished the testing activities\\naround the UTxO-HD prototype. This is a very important milestone which will\\nenable us to run system-level tests and benchmarks, as well as start refactoring\\nand cleaning the prototype. Regarding our Genesis workstream, we elaborated a\\nroadmap that gives an indication of the remaining work. We also continued our\\nwork on benchmarking chain-sync-jumping. We also continued working on improving\\nthe way we handle blocks from the future, and advancing the integration of the\\nnew VRF and KES crypto.\\n\\n## Workstreams \\n\\n### UTxO HD Prototype \\n\\nAs the prototype is nearing its completion, it was important to have enough\\nconfidence that we will be able to move additional parts of the ledger state\\nonto disk. We worked together with the Ledger team to [elaborate a\\nsketch][pull-4296] on how the UTxO-HD design would accommodate the migration of\\nadditional data from memory to disk. This gave us enough confidence that the\\ncurrent architecture will be extensible in the future.\\n\\nOn the testing front, we [added][pull-4274] property-based tests for the UTxO-HD\\ntype classes. \\n\\nWe also [enabled disabled components][pull-4289], and addressed several\\ntechnical debt issues:\\n\\n- Implement `splitSized` anti-diff split ([#4269][pull-4269]), and integrate it\\n  into consensus ([#4273][pull-4273]).\\n- Renaming of `peekVal` to `peekMDBVal` ([#7][pull-7]).\\n\\nWe ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We\\nfound a race condition in the LMDB backing store, which [we fixed][pull-4283].\\nAfter the fix we were able to successfully run these benchmarks. The results\\nwere published by [this pull request][pull-4295].\\n\\nWe used our `db-analyser` tool to benchmark the cost of reading keys and\\nflushing values to disk. The following plot shows the duration of these disk\\noperation in relation to the main ledger operations, where we can see that the\\ncost of the former are comparatively low. The spike at the beginning of the\\ngraph is when, at the start of the Shelley era, the *entire* UTxO set is flushed\\nto disk.\\n\\n![UTxO-HD read and flush benchmarks](/images/consensus/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks.png)\\n\\nAfter months of hard work adding tests for the prototype, we are ready to run\\nend-to-end tests on the node, and system level benchmarks. This signals a very\\nimportant milestone for the UTxO-HD workstream :tada:.\\n\\n### Genesis \\n\\nWe elaborated a [high-level decomposition][genesis-roadmap] of the remaining\\nwork for Genesis. We also continued benchmarking the chain-sync-jumping\\nhappy-path.\\n\\n### Technical debt\\n\\nWe continued working on improving the way we handle blocks from the future.\\n\\n### Support \\n\\nWe completed the mapping of `Crypto` to `HeaderCrypto` and body `Crypto`.\\n`HeaderCrypto` is moved to `cardano-protocol-tpraos`. We created a draft [pull\\nrequest][pull-3262] to facilitate compiling consensus.\\n\\n[pull-4274]: https://github.com/input-output-hk/ouroboros-network/pull/4274\\n[pull-4296]: https://github.com/input-output-hk/ouroboros-network/pull/4296\\n[pull-4289]: https://github.com/input-output-hk/ouroboros-network/issues/4289\\n[pull-4295]: https://github.com/input-output-hk/ouroboros-network/pull/4295\\n[genesis-roadmap]: https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md\\n[pull-4269]: https://github.com/input-output-hk/ouroboros-network/pull/4269\\n[pull-4273]: https://github.com/input-output-hk/ouroboros-network/pull/4273\\n[pull-7]: https://github.com/input-output-hk/lmdb-simple/pull/7\\n[pull-4283]: https://github.com/input-output-hk/ouroboros-network/pull/4283\\n[pull-3262]: https://github.com/input-output-hk/cardano-ledger/pull/3262"},{"id":"2023-01-25-node-cli-api","metadata":{"permalink":"/cardano-updates/2023-01-25-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-25-node-cli-api.md","source":"@site/blog/2023-01-25-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2023-01-25T00:00:00.000Z","formattedDate":"January 25, 2023","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.585,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2023-01-25-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-01-25-consensus"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-01-20-crypto"}},"content":"# 2023-01-25 - 2023-02-07\\n\\n## High level summary\\nGeneral clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the `cardano-cli query stake-snapshot` command. \\n\\n## Completed\\n\\n### docs\\n\\n### CI & project maintenance\\n- [Fix how changed files are selected in stylish-haskell CI check](https://github.com/input-output-hk/cardano-node/pull/4853)\\n- [Copyright updates](https://github.com/input-output-hk/cardano-node/pull/4755)\\n- [Remove hlint from nix required CI](https://github.com/input-output-hk/cardano-node/pull/4848)\\n- [Remove reconfigure-hlint.sh script](https://github.com/input-output-hk/cardano-node/pull/4838)\\n- [Fix hlint warnings](https://github.com/input-output-hk/cardano-node/pull/4837)\\n- [Implement ADR-2: Restructure modules for generators](https://github.com/input-output-hk/cardano-node/pull/4833)\\n- [Stylish Haskell in CI](https://github.com/input-output-hk/cardano-node/pull/4803)\\n- [Revert skip doc in ci](https://github.com/input-output-hk/cardano-node/pull/4802)\\n- [Skip CI on doc only changes](https://github.com/input-output-hk/cardano-node/pull/4800)\\n- [Skip CI if only changes are documentation](https://github.com/input-output-hk/cardano-node/pull/4792)\\n- [Build all of cardano-node in CI](https://github.com/input-output-hk/cardano-node/pull/4776)\\n- [Check cabal files in CI](https://github.com/input-output-hk/cardano-node/pull/4766)\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Straight line error handling](https://github.com/input-output-hk/cardano-node/pull/4785)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n\\n### cardano-api\\n- [New NodeToClientVersionOf typeclass](https://github.com/input-output-hk/cardano-node/pull/4787)\\n- [Remove NoImplicitPrelude from cardano-api](https://github.com/input-output-hk/cardano-node/pull/4832)\\n- [Add ReaderT of NodeToClientVersion to LocalStateQueryExpr](https://github.com/input-output-hk/cardano-node/pull/4809)\\n- [Use hoistMaybe](https://github.com/input-output-hk/cardano-node/pull/4808)\\n- [Better error message for query utxo without oops](https://github.com/input-output-hk/cardano-node/pull/4788)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n- [New query stake-snapshot integration test](https://github.com/input-output-hk/cardano-node/pull/4805)\\n- [Make leadership-schedule test less flaky](https://github.com/input-output-hk/cardano-node/pull/4671)\\n\\n## In Progress\\n\\n## CI & project mainteance\\n\\n### cardano-cli\\n- [Fix bug in hash computation in cardano-cli genesis create-cardano](https://github.com/input-output-hk/cardano-node/pull/4761)\\n- [Cleanup exports of cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/4636)\\n- [BUGFIX] - [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n- [Read network ID from environment](https://github.com/input-output-hk/cardano-node/pull/4666)\\n- [CLI option to append additional signatures to a transactions](https://github.com/input-output-hk/cardano-node/pull/4647)\\n- [Cardano ping](https://github.com/input-output-hk/cardano-node/pull/4664)\\n- [Better error message for query utxo on oops](https://github.com/input-output-hk/cardano-node/pull/4777)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Remove simple script distinction](https://github.com/input-output-hk/cardano-node/pull/4763)\\n- [Export SubmitResult from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4753)\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)\\n\\n### cardano-testnet\\n- [Use Haskell variables for passing values](https://github.com/input-output-hk/cardano-node/pull/4845)"},{"id":"2023-01-20-crypto","metadata":{"permalink":"/cardano-updates/2023-01-20-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-crypto.md","source":"@site/blog/2023-01-20-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-01-20T00:00:00.000Z","formattedDate":"January 20, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.65,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-01-20-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2023-01-25-node-cli-api"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-20-hydra"}},"content":"## High level summary\\nThe open fronts that the crypto team is working on are:\\n* Mithril: We explored whether some uses of `transmute` could be removed, but it resulted in considerable regression.  \\n* cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. \\n* KES agent: An inconsistency between `contra-tracer` available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the `contra-tracer` used by consensus. \\n\\n## Low level summary\\n\\n### Mithril\\n* We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average [PR#675](https://github.com/input-output-hk/mithril/pull/675). We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. \\n* We are writing a RFP for the audit of the core library. \\n### cardano-base\\n* A problem with Nix is blocking merge of [PR#341](https://github.com/input-output-hk/cardano-base/pull/341)\\n* Plutus team ran [benchmarks](https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs) of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we\'ll be able to verify some proofs in a single script execution.\\n* Team is fully digesting the Plonk paper. \\n* There\'s been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  \\n\\n### KES agent\\n* A little unforseen delay has been caused by a mismatch in the use of `contra-tracer`. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are [doing the change](https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431), but still the CI is not happy.\\n* The [same](https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431) was needed for the KES agents prerequisites [PR#317](https://github.com/input-output-hk/cardano-base/pull/317).\\n* We\'ve started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency"},{"id":"2023-01-20-hydra","metadata":{"permalink":"/cardano-updates/2023-01-20-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-hydra.md","source":"@site/blog/2023-01-20-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-01-20T00:00:00.000Z","formattedDate":"January 20, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.13,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-01-20-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-01-20-crypto"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-01-20-network"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has been focusing on the write-up of the Hydra HeadV1\\nspecification. Of which a first version has been aggregated and is currently\\nunder review. They aligned the on-chain scripts of reimbursing funds on abort\\nlike defined in the specification, improved the mutation test framework to have\\nmore control when testing plutus scripts. The added HeadId in the API and the\\nTUI example client make `hydra-node` easier to use and a first experiment of a\\nHydra Head explorer was showing the utility of this - see what Heads exist on\\nthe `preview` network [here](http://explorer.hydra.family).\\n\\n## What did the team achieve this week\\n\\n-   HeadId to API and display in the TUI [#678](https://github.com/input-output-hk/hydra/pull/678)\\n-   Experiment of creating a hydra explorer, first result hosted [here](http://explorer.hydra.family)\\n-   Improved mutation framework allowing to fail for the right reason [#679](https://github.com/input-output-hk/hydra/pull/679)\\n-   Correctly reimburse funds in abort (matching the spec) [#670](https://github.com/input-output-hk/hydra/pull/670)\\n-   Finished a first write-up of the Hydra HeadV1 spec: [Read it on overleaf](https://www.overleaf.com/read/bbqzmptcxryj) ([Communication channels](https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md) for feedback)\\n\\n## What are the goals of next week\\n\\n-   Monthly review meeting with a broader audience\\n-   Groom & plan actions required for a maintainable Head explorer\\n-   Break \u201calign gaps\u201d feature into smaller chunks (at least on- /off-chain) and groom it\\n-   Review the spec & discuss individual aborts with researchers (a bigger open question)"},{"id":"2023-01-20-network","metadata":{"permalink":"/cardano-updates/2023-01-20-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-network.md","source":"@site/blog/2023-01-20-network.md","title":"Network Team Update","description":"High level summary","date":"2023-01-20T00:00:00.000Z","formattedDate":"January 20, 2023","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"},{"label":"release","permalink":"/cardano-updates/tags/release"}],"readingTime":1.045,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2023-01-20-network","authors":"coot","tags":["network","release"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-20-hydra"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-01-20-sre"}},"content":"## High level summary\\n\\nWe have been working towards `cardano-node-1.35.5` release.  QA & benchmarking\\nteams gave a green light for the release, and we made decent progress with some\\nCI problem which we encountered on the way ([PR #4612]). We are also working on\\npeer sharing, making improvements in our testing infrastructure, reducing\\ntechnical debt and making progress towards `io-sim-1.0.0.0`. Galois is making\\nprogress on Handshake improvements.\\n\\n## Low level summary\\n\\nOur diffusion simulation network now includes a mixed network of `initiator\\nonly` and `initiator and responder` nodes. [issue #4222]\\n\\nWe are now reviewing the [peer sharing pull request][PR #4019].\\n\\nWe are also reviewing pull request which introduces handshake query flag. [PR #4256]\\n\\nWe fixed a bug in our network simulator.  The bug was triggered when a node\\ndied when performing a simultaneous TCP open (a corner case of a corner case!). [PR #4265]\\n\\nWe also refactored `Snocket` interface and removed the bearer construction from\\nits methods. [PR #4260]\\n\\nWe are working towards releasing `io-sim-1.0.0.0` on Hackage, which includes\\nreviewing two PRs: [PR #57] and [PR #60] as well as writing an announcement\\nblog post.  \\n\\n[PR #4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[PR #4256]: https://github.com/input-output-hk/ouroboros-network/pull/4256\\n[PR #4260]: https://github.com/input-output-hk/ouroboros-network/pull/4260\\n[PR #4265]: https://github.com/input-output-hk/ouroboros-network/pull/4265\\n[PR #4612]: https://github.com/input-output-hk/cardano-node/pull/4612\\n[PR #57]: https://github.com/input-output-hk/io-sim/pull/57\\n[PR #60]: https://github.com/input-output-hk/io-sim/pull/60\\n[issue #4222]: https://github.com/input-output-hk/ouroboros-network/issues/4222"},{"id":"2023-01-20-sre","metadata":{"permalink":"/cardano-updates/2023-01-20-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-20-sre.md","source":"@site/blog/2023-01-20-sre.md","title":"SRE Team Update","description":"High level summary","date":"2023-01-20T00:00:00.000Z","formattedDate":"January 20, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":1.13,"hasTruncateMarker":false,"authors":[{"name":"Michael Fellinger","title":"SRE Team Lead","url":"https://github.com/manveru","imageURL":"https://github.com/manveru.png","key":"manveru"}],"frontMatter":{"title":"SRE Team Update","slug":"2023-01-20-sre","authors":"manveru","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2023-01-20-network"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-01-19-ledger"}},"content":"## High level summary\\n\\nThe SRE team continues work on Cicero, Tullia, and Bitte, as well as providing\\nsupport for cardano-world.\\n\\n## Lower level summary\\n\\n### Cicero\\n\\n- Fixed various race conditions around transformers.\\n- Brought our CI up to date.\\n- Migrated to the Nomad exec driver with Nix support for many actions.\\n- Moved Nix builds to the Nomad clients for much better cache locality.\\n- Ongoing work on vastly improving the action matching and evaluation speed.\\n- \\n\\n### Tullia\\n\\n- Made it easier to support cloning from a PR\'s fork\\n- Update to latest std\\n- Add workaround for cgroup issue: [nomad#12877](https://github.com/hashicorp/nomad/issues/12877)\\n- github preset: add `github.ci.remote` and `(read|get)Repository` functions\\n- Fix various issues around CUE handling\\n\\n### Bitte\\n\\n- Upgrade to NixOS 22.11\\n- Prototype usage of [Colmena](https://colmena.cli.rs) for deploys instead of [deploy-rs](https://github.com/serokell/deploy-rs)\\n- Finalized work on Equinix Metal support\\n- Prototype better secrets management with [ragenix](https://github.com/yaxitech/ragenix) instead of [sops-nix](https://github.com/Mic92/sops-nix)\\n- Improve CI and bring it up to date\\n\\n### cardano-world\\n\\n- Fixd various OOM issues on preview and preprod\\n- Rotated KES keys on preview and preprod\\n- Optimize mainnet db-sync to cope with higher load\\n- Fix an issue where PostgreSQL would fail after a reboot\\n\\n### bitte-world\\n\\n- Updated to NixOS 22.11\\n\\n### ci-world\\n\\n- Updated to NixOS 22.11\\n- Added Equnix cluster\\n- Improve caching of Nix builds"},{"id":"2023-01-19-ledger","metadata":{"permalink":"/cardano-updates/2023-01-19-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-19-ledger.md","source":"@site/blog/2023-01-19-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-01-19T00:00:00.000Z","formattedDate":"January 19, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.665,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-01-19-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2023-01-20-sre"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-01-14-db-sync"}},"content":"## High level summary\\n\\nThe ledger team completed some preliminary ground work in preparation for CIP-1694\\n(restructuring the ledger state),\\nfixed the PDF hosting problem (mostly the formal specs),\\nbuilt out more of the new user-friendly ledger API,\\nfinished a proof of concept for constraint-based generators for property tests\\n(with the hopes of being able to replace our trace generators one day),\\nand addressed technical debt.\\n\\n## Lower level summary\\n\\n### Restructuring the ledger state\\n\\nThe existing governance structures will be replace in the conway ledger era,\\nas described in CIP-1694.\\nIn particular, the ledger rules will be restructured as follows:\\n\\n\\n```\\n   BBODY\\n    |\\n    |-------------------------------|\\n    v                               v\\n   TICK                            LEDGERS\\n    |                               |\\n    |---------|                     |\\n    v         v                     v\\n   RUPD     ~NEWEPOCH~            ~LEDGER~\\n              |                     |\\n              |----------|          |--------|-------------------|-----------|\\n              v          v                   v                   v           v\\n            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+\\n              |                              |                   |\\n              |---------|------------|       v                   |\\n              v         v            v      DELPL                v\\n             SNAP      POOLREAP    -UPEC-    |                  UTXO\\n                                             |--------|          |\\n                                             v        v          v\\n                                            POOL     DELEG     ~UTXOS~\\n\\n-..- Removed\\n+..+ Added\\n~..~ Modified\\n```\\n\\nMoreover, the ledger state will also be restructured in accordance with the new rules.\\nIn the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.\\nWe have also adapted all the data structures in the ledger state.\\n\\nSee:\\n\\n* [pull-3216]\\n\\n### PDF hosting\\n\\nWe now build all of our PDFs using a GitHub action which is triggered by pushing a tag\\nwith a specific form, `cardano-ledger-spec-YYYY-MM-DD`.\\nThe action creates a GitHub release containing the PDFs.\\nThe links in the main ledger README now point to the PDFs in the latest release.\\n\\nSee:\\n\\n* [pull-3245]\\n* [pull-3260]\\n\\n### Powering the new ledger API\\n\\nWe have now removed all the `HasField` instances from the protocol parameter data types,\\nand replaced them with lenses.\\nThis is probably the last major restructuring that the ledger team will do on the code base\\nfor the API for a while\\n(the Plutus tools team will be working on it next, see [here](https://github.com/input-output-hk/cardano-ledger/projects/5)).\\nWe also added a new helpful function `ensureMinCoinTxOut`.\\n\\nSee:\\n\\n* [pull-3242]\\n* [pull-3248]\\n\\n### Constraint-based generators\\n\\nOur largest scale property tests generate an initial ledger state and a long sequence of valid blocks\\nwhich span several epochs, mimicking a real network.\\nThese tests are, in theory, excellent for checking properties.\\nThey are, however, very difficult to maintain and are not as random as we would like\\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).\\n\\nWe would like to switch to tests which instead generate a random ledger state representative\\nof not just an initial state, generate a single random valid block, and then test our properties.\\nThe hope is that these will be much more random and easier to maintain.\\n\\nWe have finished a proof of concept are encouraged that this approach could work!\\n\\nSee:\\n\\n* [pull-3219]\\n\\n### Technical debt\\n\\n* [pull-3244] massive CI speedup\\n* [pull-3249] better types for fees in the protocol parameters\\n* [pull-3264] move our annotator code to the `cardano-ledger-binary` package where it belongs\\n* [pull-3239] move the `Wdrls` type to the `Core` module.\\n\\n\\n[pull-3244]: https://github.com/input-output-hk/cardano-ledger/pull/3244\\n[pull-3245]: https://github.com/input-output-hk/cardano-ledger/pull/3245\\n[pull-3248]: https://github.com/input-output-hk/cardano-ledger/pull/3248\\n[pull-3249]: https://github.com/input-output-hk/cardano-ledger/pull/3249\\n[pull-3260]: https://github.com/input-output-hk/cardano-ledger/pull/3260\\n[pull-3264]: https://github.com/input-output-hk/cardano-ledger/pull/3264\\n[pull-3239]: https://github.com/input-output-hk/cardano-ledger/pull/3239\\n[pull-3242]: https://github.com/input-output-hk/cardano-ledger/pull/3242\\n[pull-3216]: https://github.com/input-output-hk/cardano-ledger/pull/3216\\n[pull-3219]: https://github.com/input-output-hk/cardano-ledger/pull/3219"},{"id":"2023-01-14-db-sync","metadata":{"permalink":"/cardano-updates/2023-01-14-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-14-db-sync.md","source":"@site/blog/2023-01-14-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2023-01-14T00:00:00.000Z","formattedDate":"January 14, 2023","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.36,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2023-01-14-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-01-19-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-13-hydra"}},"content":"## High level summary\\n\\nAfter spending the last months on improving DBSync and releasing `13.1.0.0` the DBSync team focused\\nthe last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the\\nnew leger core and ghc-9.2.4\\n\\n## Lower level summary\\n- Integrate CHaP\\n[#1331](https://github.com/input-output-hk/cardano-db-sync/pull/1331)\\n- Integrate new ledger core `0.1.1.1` and ghc-9.2\\n[#1332](https://github.com/input-output-hk/cardano-db-sync/pull/1332)\\n- Technical debt: Add code formatter fourmolu\\n[#1334](https://github.com/input-output-hk/cardano-db-sync/pull/1334)\\n- Preparing and tracking Conway and UTxO integration"},{"id":"2023-01-13-hydra","metadata":{"permalink":"/cardano-updates/2023-01-13-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-hydra.md","source":"@site/blog/2023-01-13-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2023-01-13T00:00:00.000Z","formattedDate":"January 13, 2023","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.56,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2023-01-13-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2023-01-14-db-sync"},"nextItem":{"title":"Node Release Team Update","permalink":"/cardano-updates/2023-01-13-release"}},"content":"## High-level summary\\n\\nSince last weekly update before christmas, the Hydra team worked on the\\ntechnical specification, closed gaps in `hydra-plutus` scripts, made the unique\\n`headId` available to Hydra clients through the API, allow the `hydra-node` to\\nexplicitly synchronize from genesis (if configured), and fixed smaller log and\\nbuild issues reported by new users.\\n\\nBesides this, a retrospective [blog\\npost](https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/)\\nwas published by Matthias Benkort (CF) on Hydra, summarizing our progress made\\nin 2022 also an outlook where Hydra is headed for in 2023. Also, the team had\\nsome first sessions on the voting project with Catalyst and the CF.\\n\\nA full digest monthly digest for December 2022 can be found on the [hydra\\nwebsite](https://hydra.family/head-protocol/monthly/2022-12).\\n\\n## What did the team achieve this week\\n\\n- Had some first sessions on the voting project with Catalyst and CF\\n- Published retrospective [blog\\n  post](https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/)\\n  by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also\\n  an outlook where Hydra is headed for in 2023.\\n- Worked on the LaTeX spec for HydraHeadV1, not final or published yet - [latest\\n  version in this repository](https://github.com/ch1bo/hydra-spec).\\n- Add unique `headId` to API and hence make it available to clients.\\n- Allow `hydra-node` to explicitly synchronize from genesis using `--start-chain-from 0`.\\n- Closed gaps in `hydra-plutus` scripts\\n    - bounded transaction validity ([ADR21](https://hydra.family/head-protocol/adr/21/))\\n    - enforcing contract continuity via state token in output\\n- Fixed JSON for some logs and smaller build issues reported by new users.\\n\\n## What are the goals of next week\\n\\n- Reach out to have `hydra-tutorial` integrated.\\n- Plan the next couple of months.\\n- Complete checking reimbursing of commits in head validator.\\n- Align plutus scripts to spec and simplify them (identified some simplifications)\\n- Improve mutation framework to be sure we fail tests for the right reasons\\n- Complete the spec except the open points (<5) and also discuss them with researchers."},{"id":"2023-01-13-release","metadata":{"permalink":"/cardano-updates/2023-01-13-release","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-release.md","source":"@site/blog/2023-01-13-release.md","title":"Node Release Team Update","description":"Node Reelease Update","date":"2023-01-13T00:00:00.000Z","formattedDate":"January 13, 2023","tags":[{"label":"release","permalink":"/cardano-updates/tags/release"}],"readingTime":0.64,"hasTruncateMarker":false,"authors":[{"name":"Samuel Leathers","title":"Service Reliability Manager","url":"https://github.com/disassembler","imageURL":"https://github.com/disassembler.png","key":"disassembler"}],"frontMatter":{"title":"Node Release Team Update","slug":"2023-01-13-release","authors":"disassembler","tags":["release"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2023-01-13-hydra"},"nextItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-01-13-system-test"}},"content":"## Node Reelease Update\\n## 2022-11-02 - 2023-01-13\\n\\n### Executive Summary\\n\\nA 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on\\n`release/1.35` branch and does not bump cardano-ledger.\\n\\nThe team successfully integrated an interim release bump of ledger and consensus into cardano-node master.\\nThis work will not be released in a node version, but will be continued by the current dependency bump in progress.\\n\\nWe anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.\\n\\nThe 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.\\n\\n### Completed\\n\\n- [Release 1.35.4](https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4)\\n\\n### In Progress\\n\\n- [Release 1.35.5](https://github.com/input-output-hk/cardano-node/commits/release/1.35)\\n\\n  * [Test Status](https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst)"},{"id":"2023-01-13-system-test","metadata":{"permalink":"/cardano-updates/2023-01-13-system-test","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-13-system-test.md","source":"@site/blog/2023-01-13-system-test.md","title":"System Test Team Update","description":"High level summary","date":"2023-01-13T00:00:00.000Z","formattedDate":"January 13, 2023","tags":[{"label":"system-test","permalink":"/cardano-updates/tags/system-test"}],"readingTime":0.91,"hasTruncateMarker":false,"authors":[{"name":"Dorin Solomon","title":"System Test Team Lead","url":"https://github.com/dorin100","imageURL":"https://github.com/dorin100.png","key":"dorin100"}],"frontMatter":{"title":"System Test Team Update","slug":"2023-01-13-system-test","authors":"dorin100","tags":["system-test"],"hide_table_of_contents":false},"prevItem":{"title":"Node Release Team Update","permalink":"/cardano-updates/2023-01-13-release"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-01-12-mithril"}},"content":"## High level summary\\nDuring the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the _P2P Single\\nRelay_ functionality.\\n\\nWe also update the Node & DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.\\n\\n## Workstreams\\n\\n### Framework improvements:\\n- extended the _cardano-node-tests_ with the ability for anybody to fork the repo and [run all our System Tests on GitHub Actions](https://input-output-hk.github.io/cardano-node-tests/readme.html)\\n- added 2 new nightly pipelines - nightly-mixed and nightly-p2p - [details here](https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html)\\n- some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;\\n\\n`  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===\\n  to\\n  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===`\\n\\n### Node:\\n- ran a couple of sanity runs of CLI a& sync tests on a local branch with P2P Single Relay enabled\\n- started the preparations for testing the next tag - [details here](https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst)\\n\\n### DB-Sync:\\n- some improvements on db-sync sync tests"},{"id":"2023-01-12-mithril","metadata":{"permalink":"/cardano-updates/2023-01-12-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-12-mithril.md","source":"@site/blog/2023-01-12-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2023-01-12T00:00:00.000Z","formattedDate":"January 12, 2023","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.165,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2023-01-12-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2023-01-13-system-test"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-01-11-consensus"}},"content":"## High level overview\\nThe Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an [ADR](https://mithril.network/doc/adr/4). They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.\\n\\nFinally, they have worked on upgrading the `devnet` and fixing some flakiness in the end to end tests of the CI.\\n\\n## Low level overview\\n- Implemented the redaction of an ADR for handling graceful updates of the Mithril Network [#671](https://github.com/input-output-hk/mithril/issues/671)\\n- Worked on a proof of concept to handle backward compatibilty of exchanged messages with `protobuf` [#677](https://github.com/input-output-hk/mithril/issues/677)\\n- Worked on a proof of concept to handle backward compatibilty of exchanged messages with `avro` [#678](https://github.com/input-output-hk/mithril/issues/678)\\n- Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction [#672](https://github.com/input-output-hk/mithril/issues/672)\\n- Worked on upgrading the Cardano node of the Mithril `devnet`, as well as fixing flakiness of the CI [#523](https://github.com/input-output-hk/mithril/issues/523)\\n- Prepared and tested the new `2302` distribution pre-release [2302.0-prerelease](https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease)\\n- Updated the documentation for SPO to build a signer node in order to better reflect the new release process [#681](https://github.com/input-output-hk/mithril/issues/681)"},{"id":"2023-01-11-consensus","metadata":{"permalink":"/cardano-updates/2023-01-11-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-11-consensus.md","source":"@site/blog/2023-01-11-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2023-01-11T00:00:00.000Z","formattedDate":"January 11, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.35,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2023-01-11-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2023-01-12-mithril"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-01-11-performance-and-tracing"}},"content":"## High level summary\\n\\nThe consensus team is resuming its activities after the Christmas break. During\\nthese weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and\\ndiscussing with the Ledger team the changes that might be required for the next\\niterations. The pull request that adds the Conway era is waiting for a second\\nreview round and we hope to merge it soon. On the technical debt side we are\\nlooking into a property-test failure found in the iterators. We are\\ninvestigating if this is an error in the model or in the implementation. We also\\nimproved the documentation of our testing code.\\n\\n## Workstreams \\n\\n### UTxO HD Prototype \\n\\nWe worked with the Ledger team to start preparing the next versions of UTxO-HD.\\nThe Ledger team is concerned that for the remaining maps we might need the full\\nledger state on epoch boundaries. Since the main consumer of the ledger rules is\\nConsensus, the code that requires access to a full state could be moved from the\\nledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take\\nplace in such bridge, instead of querying the ledger for the values that are\\nrequired in the epoch-transition computations.\\n\\nWe [relocated][pull-4234] some UTxO-HD definitions, in preparation for merging\\nthe prototype into `master`.\\n\\nWe also completed updated local benchmarks comparing the replay time and memory\\nconsumption of:\\n\\n- the baseline node (`f2fc76ef45647275c98634da1718290b976ff364`) \\n- the UTxO-HD node with the in-memory backend \\n- the UTxO-HD node with the LMDB backend\\n\\nThe following plot shows the results: we can see that the LMDB node barely\\nreaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The\\nin-memory backend is about 30 minutes faster, but still slower than the baseline\\nversion. We are aware of this phenomenon and it is inherent to the problem of\\nmaintaining sequences of differences of the last `k` ledger states that allows\\nus to perform rollback and roll-forward. We are in the process of measuring\\nsyncing from scratch times.\\n\\n![](/images/consensus/2023-01-11-utxo-hd-replay-benchmarks.png)\\n\\nWe also [added `StaticEither` accessors][pull-4263] that helped us to simplify\\nthe UTxO-HD prototype.\\n\\n### New Conway era\\n\\nWe incorporated the feedback of the [pull request][pull-3971], and rebased this\\nbranch on top of `master`. The PR is pending a second review round and we hope\\nto merge this soon.\\n\\n### Technical debt \\n\\nWe are investigating a [property-testing failure][issue-4183] involving\\niterators. Solving this requires understanding the expected behavior of\\niterators in the counterexample found by `QuickCheck` to determine if the error\\nis in the model or in the implementation.\\n\\n### Fostering collaboration\\n\\nWe [moved][pull-4248] the contents of `docs/Testing.md` closer to the code, so that the\\nexplanations about the tests are easier to find in the relevant modules, and the\\ndocumentation is easier to keep up to date.\\n\\n[pull-4234]: https://github.com/input-output-hk/ouroboros-network/pull/4234\\n[issue-4183]: https://github.com/input-output-hk/ouroboros-network/issues/4183\\n[pull-4248]: https://github.com/input-output-hk/ouroboros-network/pull/4248\\n[pull-3971]: https://github.com/input-output-hk/ouroboros-network/pull/3971\\n[pull-4263]: https://github.com/input-output-hk/ouroboros-network/pull/4263"},{"id":"2023-01-11-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2023-01-11-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-11-performance-and-tracing.md","source":"@site/blog/2023-01-11-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2023-01-11T00:00:00.000Z","formattedDate":"January 11, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.865,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & tracing update","slug":"2023-01-11-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2023-01-11-consensus"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-01-06-crypto"}},"content":"## High level summary\\n\\nSince our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:\\n\\n1. SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.\\n2. The new tracing system:  the improved API of the new tracing system was implemented, and we\'re now porting the tracing integration layer over.\\n3. Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.\\n4. New benchmark deployment infrastructure:  we\'ve made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.\\n5. Legacy benchmarking:  we\'ve started merging the legacy benchmark deployment infrastructure into the workbench.\\n6. Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.\\n\\n## Performance\\n\\nThe AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.\\n\\n## Tracing\\n\\nThe improved tracing internals were implemented, and we\'re now into the phase of updating the tracing integration, which is also mostly done.\\n\\n## Infrastructure\\n\\nThanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.\\n\\nOn the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.\\nWe now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.\\n\\nWe also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.\\nOnce this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads."},{"id":"2023-01-06-crypto","metadata":{"permalink":"/cardano-updates/2023-01-06-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-06-crypto.md","source":"@site/blog/2023-01-06-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2023-01-06T00:00:00.000Z","formattedDate":"January 6, 2023","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.46,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2023-01-06-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2023-01-11-performance-and-tracing"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-01-05-ledger"}},"content":"## High level summary\\nThe four open fronts that the crypto team is working on are:\\n* MuSig2: The API features (error handling) has been merged. \\n* Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.\\n* cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. \\n* KES agent: We keep progressing with KES secure forgetting implementation.\\n\\nWe also started working in the cryptography engineering handbook, which will be a cross team effort.\\n\\n## Low level summary\\n### MuSig2\\n* Merged the more granular error handling mechanism [PR#33](https://github.com/input-output-hk/musig2/pull/33)\\n\\n### Mithril\\n* Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in [Version 0.1.1](https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d), which was published in [crates.io](https://crates.io/crates/kes-summed-ed25519). \\n* Updated new KES format to mithril library [PR 674](https://github.com/input-output-hk/mithril/pull/674)\\n* We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync [PR 531](https://github.com/input-output-hk/mithril/pull/531)\\n* We keep progressing on reducing the use of `transmute` in `mithril-stm`.\\n### cardano-base\\n* Nothing new to report. Still working in merging these PRs. We are only missing nix merge of [PR#520](https://github.com/input-output-hk/iohk-nix/pull/520) and the updates on VRF will be merged.\\n\\n### KES agent\\n* We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests [PR#255](https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518).\\n\\n### Cryptography handbook\\nWe have made available the (temporary) cryptography handbook https://input-output-hk.github.io/cryptography_spec/, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives."},{"id":"2023-01-05-ledger","metadata":{"permalink":"/cardano-updates/2023-01-05-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-01-05-ledger.md","source":"@site/blog/2023-01-05-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2023-01-05T00:00:00.000Z","formattedDate":"January 5, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":4.44,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-01-05-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2023-01-06-crypto"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-12-28-node-cli-api"}},"content":"## High level summary\\n\\nThe ledger team finished up the remaining work for tracking individual depots,\\nbuilt out the new Conway era transaction body (in line with CIP-1694),\\ngreatly reduce some problematically large calculations on the epoch boundary,\\nand addressed technical debt.\\n\\n## Lower level summary\\n\\n### Finishing the deposit tracking\\n\\nThe initial work on the individual deposit tracking project focused only on correctness.\\nAs this is a large data structure\\n(since its size is linear with respect to the number of registered stake credentials),\\nit is very important that we also reduce the memory overhead as much as possible.\\nFortunately, we were able to add very little overhead for the deposits by using existing\\nefficient data structures. The extra tracking now only incurs one word (8 bytes)\\nper registered stake credential.\\n\\nSee:\\n* [pull-3195]\\n* [pull-3202]\\n* [pull-3217]\\n\\n### New Conway era transaction\\n\\nWe implemented the Conway era transaction body, which is in line with CIP-1694.\\nNote that the Conway era implements, losing speaking, the parts of CIP-1694 that are not\\nrelated to the liquid democracy (the \\"DReps\\").\\nThe new transaction body adds the new governance actions and votes,\\nwhile also deprecating the old governance structures\\n(i.e. the old protocol parameter updates and MIR certificates).\\n\\nWe also now have the wire specification (CDDL file) and serialization code in place.\\nThe wire specification is still subject to change while we work on the Conway era,\\nbut it is now usable and has proper testing support\\n(so that, for example, the serialization round-trips, etc).\\n\\nSee:\\n* [pull-3176]\\n* [pull-3226]\\n\\n### Optimizing the `TICKF` transition\\n\\nEvery since the release of the Shelley era, we have been working to reduce the computational load\\nplaced on the node by the ledger at the epoch boundary.\\nWhile still not perfect, we believe that we have removed one of the final problematically long\\nepoch boundary computations that exacerbate situations like\\n[this](https://github.com/input-output-hk/cardano-node/issues/4421).\\nIn particular, the problem involved the way in which the consensus layer obtains a view of the\\nledger for the purposes of checking the leadership schedule in a new epoch.\\nWe implemented a stopgap measure which now only incurs a single multi-second cost once per epoch\\ninstead of potentially several multi-second costs while the networks waits for the first block\\nof a new epoch to be minted.\\n\\nSee:\\n* An [ADR](https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md) about the decision.\\n* [pull-3209]\\n\\n### Technical debt\\n\\nWe closed the year out with a lot of reduction to the technical debt!\\n\\n#### Improved ledger event\\n\\n* [pull-3212] - The ledger events are not guaranteed to appear in any given order within a block.\\n  For this reason, motivated by the use case in db-sync, the `TotalDeposits` event now\\n  includes a transaction ID and emits the _change_ in deposits instead of the value.\\n\\n#### Improved type saftey\\n\\n* [pull-3208] - We replaced `NominalDiffTime` with a newtype wrapper. The problem was that our CBOR\\n  encoders and decoders were using the wrong level of precision, having to due with with\\n  the Shelley genesis file. We removed the potential problem with a newtype wrapper.\\n* [pull-3167] - We now use a GADT to ensure consistency of the Plutus language in the types\\n  for `TransactionScriptFailure` and `PlutusDebug`.\\n\\n#### Code/Module organization\\n\\n* [pull-3175] - The Allegra and Mary eras had an unusual relationship in our codebase,\\n  due to the uncertainly of release dates while we were implementing them.\\n  In particular, they were coupled in way that is different from the rest of the code base.\\n  With hindsight on our side, we split the combined `shelley-ma` Haskell package into two\\n  separate ledger era packages, which is now consistent with the rest of the repository\\n  and module structure.\\n* [pull-3184] - We created a core test sub-library, cleaning up a lot of our property test\\n  generator code.\\n* [pull-3210] - We moved the `KeyPair` type to the test library. Outside of testing,\\n  the ledger does not need to deal with signing keys, and since this is a topic that\\n  deserves the utmost care, it is best to make it clear that our use of signing keys\\n  is only for testing.\\n* [pull-3229] - We split the `Cardano.Ledger.Alonzo.Data` module, which is more consistent with the rest\\n  of the codebase.\\n\\n#### Revert pointer address deprecation\\n\\nThanks to one of our excellent internal auditors,\\n[@jmhrpr](https://github.com/jmhrpr),\\nwe now have a better plan for deprecating pointer addresses.\\nThis meant that we had to revert the previous work to deprecate them.\\n\\nSee:\\n* [issue-3161]\\n* [pull-3215]\\n\\n#### Miscellaneous\\n\\n* [pull-3205] - We removed deprecated type synonyms.\\n* [pull-3218] - We cleaned up the address deserialization.\\n* [pull-3223] - We fixed faulty address deserialization tests.\\n* [pull-3222] - We switched to a general type family `TxOut` from concrete ones,\\n  reducing many constraints.\\n* [pull-3224] - `ShelleyGenesis` is now parameterized by crypto instead of by era.\\n* [pull-3170] - We set the cabal-version to 3.0 in our projects.\\n* [pull-3172] - We removed the now useless `EncodeMint`/`DecodeMint` classes.\\n* [pull-3225] - We switch from [ormolu](https://hackage.haskell.org/package/ormolu) to \\n  [fourmolu](https://hackage.haskell.org/package/fourmolu).\\n  The reason was to be able to finally have more diff friendly code!\\n\\n[issue-3161]: https://github.com/input-output-hk/cardano-ledger/issues/3161\\n[pull-3175]: https://github.com/input-output-hk/cardano-ledger/pull/3175\\n[pull-3176]: https://github.com/input-output-hk/cardano-ledger/pull/3176\\n[pull-3184]: https://github.com/input-output-hk/cardano-ledger/pull/3184\\n[pull-3195]: https://github.com/input-output-hk/cardano-ledger/pull/3195\\n[pull-3202]: https://github.com/input-output-hk/cardano-ledger/pull/3202\\n[pull-3205]: https://github.com/input-output-hk/cardano-ledger/pull/3205\\n[pull-3208]: https://github.com/input-output-hk/cardano-ledger/pull/3208\\n[pull-3209]: https://github.com/input-output-hk/cardano-ledger/pull/3209\\n[pull-3210]: https://github.com/input-output-hk/cardano-ledger/pull/3210\\n[pull-3212]: https://github.com/input-output-hk/cardano-ledger/pull/3212\\n[pull-3214]: https://github.com/input-output-hk/cardano-ledger/pull/3214\\n[pull-3215]: https://github.com/input-output-hk/cardano-ledger/pull/3215\\n[pull-3217]: https://github.com/input-output-hk/cardano-ledger/pull/3217\\n[pull-3218]: https://github.com/input-output-hk/cardano-ledger/pull/3218\\n[pull-3222]: https://github.com/input-output-hk/cardano-ledger/pull/3222\\n[pull-3223]: https://github.com/input-output-hk/cardano-ledger/pull/3223\\n[pull-3224]: https://github.com/input-output-hk/cardano-ledger/pull/3224\\n[pull-3225]: https://github.com/input-output-hk/cardano-ledger/pull/3225\\n[pull-3226]: https://github.com/input-output-hk/cardano-ledger/pull/3226\\n[pull-3229]: https://github.com/input-output-hk/cardano-ledger/pull/3229\\n[pull-3167]: https://github.com/input-output-hk/cardano-ledger/pull/3167\\n[pull-3170]: https://github.com/input-output-hk/cardano-ledger/pull/3170\\n[pull-3172]: https://github.com/input-output-hk/cardano-ledger/pull/3172"},{"id":"2022-12-28-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-12-28-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-28-node-cli-api.md","source":"@site/blog/2022-12-28-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-12-28T00:00:00.000Z","formattedDate":"December 28, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.325,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-12-28-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2023-01-05-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-16-hydra"}},"content":"# 2022-12-28 - 2023-01-10\\n\\n## High level summary\\n\\n## Completed\\n\\n### docs\\n\\n### CI & project maintenance\\n- [Fix hedgehog-extras sha hash](https://github.com/input-output-hk/cardano-node/pull/4762)\\n- [Update hegehog-extras bounds](https://github.com/input-output-hk/cardano-node/pull/4759)\\n- [GitHub token fix](https://github.com/input-output-hk/cardano-node/pull/4751)\\n- [Use setup-haskell action](https://github.com/input-output-hk/cardano-node/pull/4743)\\n- [Use Github Action to install libsecp256k1](https://github.com/input-output-hk/cardano-node/pull/4738)\\n- [Update index state and hedgehog-extras.](https://github.com/input-output-hk/cardano-node/pull/4714)\\n- [Cleaned cabal files](https://github.com/input-output-hk/cardano-node/pull/4710)\\n- [Add cache versioning](https://github.com/input-output-hk/cardano-node/pull/4737)\\n- [Delete obsolete scripts](https://github.com/input-output-hk/cardano-node/pull/4742)\\n- [Use SECURITY.md published in Cardano Engineering Handbook](https://github.com/input-output-hk/cardano-node/pull/4746)\\n\\n### Developer experience\\n\\n### cardano-cli\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Filter out duplicate collateral inputs in tx build cmds](https://github.com/input-output-hk/cardano-node/pull/4749)\\n- [Optimise query stake-snapshot command](https://github.com/input-output-hk/cardano-node/pull/4754)\\n\\n### cardano-api\\n\\n### cardano-node\\n\\n### cardano-testnet\\n\\n## In Progress\\n\\n## CI & project mainteance\\n- [Copyright updates](https://github.com/input-output-hk/cardano-node/pull/4755)\\n\\n### cardano-cli\\n- [Fix bug in hash computation in cardano-cli genesis create-cardano](https://github.com/input-output-hk/cardano-node/pull/4761)\\n- [Cleanup exports of cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/4636)\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n- [Read network ID from environment](https://github.com/input-output-hk/cardano-node/pull/4666)\\n- [CLI option to append additional signatures to a transactions](https://github.com/input-output-hk/cardano-node/pull/4647)\\n- [Cardano ping](https://github.com/input-output-hk/cardano-node/pull/4664)\\n- [Better error message for query utxo on oops](https://github.com/input-output-hk/cardano-node/pull/4777)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Remove simple script distinction](https://github.com/input-output-hk/cardano-node/pull/4763)\\n- [Export SubmitResult from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4753)\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)\\n\\n### cardano-testnet\\n- [Use Haskell variables for passing values](https://github.com/input-output-hk/cardano-node/pull/4845)"},{"id":"2022-12-16-hydra","metadata":{"permalink":"/cardano-updates/2022-12-16-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-16-hydra.md","source":"@site/blog/2022-12-16-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-12-16T00:00:00.000Z","formattedDate":"December 16, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.27,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-12-16-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-12-28-node-cli-api"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-12-15-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on [the website](https://hydra.family/head-protocol/benchmarks/transaction-cost/) and reduced the cost for commit transactions by ~30% with the help of reference scripts.\\n\\nThe year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.\\n\\n## What did the team achieve this week\\n\\n- Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.\\n- Reduce commit transaction costs by ~30% with reference scripts.\\n- Prepared an RFP for external audit of the Hydra Head solution.\\n- Fixed transaction cost benchmarks for abort tx [#631](https://github.com/input-output-hk/hydra/issues/631).\\n- Recorded decision to use model-based testing ([ADR22](https://hydra.family/head-protocol/adr/22/)) and improved Model [documentation](https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html).\\n    - Concluding the first increment on &ldquo;Validate coordinated Head protocol&rdquo; [#194](https://github.com/input-output-hk/hydra/issues/194).\\n    - Formulated next step / follow-up on testing the Soundness property of our protocol [#656](https://github.com/input-output-hk/hydra/issues/656).\\n- Switched to using nix flakes for development setup and CI build [#646](https://github.com/input-output-hk/hydra/pull/646).\\n\\n## What are the goals of next week\\n\\n- Push [ADR21](https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md) & tx validity gap over the finish line (smoke tests missing).\\n- Integrate the `hydra-tutorial`.\\n- Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.\\n- Close & recap on the year with another monthly report (+ blog post)."},{"id":"2022-12-15-mithril","metadata":{"permalink":"/cardano-updates/2022-12-15-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-15-mithril.md","source":"@site/blog/2022-12-15-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2022-12-15T00:00:00.000Z","formattedDate":"December 15, 2022","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.11,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2022-12-15-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-16-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-12-14-consensus"}},"content":"## High level overview\\nThe Mithril team has released the new distribution [`2248.1`](https://github.com/input-output-hk/mithril/releases/tag/2248.1) of their nodes. They have published the first version of the Mithril cryptographic library on [`crates.io`](https://crates.io/crates/mithril-stm), the Rust community\u2019s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.\\n\\nFinally, they have kept on simplifying the aggregator node\'s multi-signer by removing the signer registration and the certificate creation from its responsibilities.\\n\\n## Low level overview\\n- Implemented removing verification key and stake from single signatures [#619](https://github.com/input-output-hk/mithril/issues/619)\\n- Completed the extraction of the signer registration from the multi-signer [#642](https://github.com/input-output-hk/mithril/issues/642)\\n- Completed the extraction of the certificate creation from the multi-signer [#638](https://github.com/input-output-hk/mithril/issues/638)\\n- Implemented a workflow to test client binaries (Linux / MacOS / Windows) [#601](https://github.com/input-output-hk/mithril/issues/601)\\n- Completed the signature of the artifacts produced by the CI [#587](https://github.com/input-output-hk/mithril/issues/587)\\n- Fixed the protocol parameters transition [#627](https://github.com/input-output-hk/mithril/issues/627)\\n- Worked on optimizing the snapshot digest computation [#510](https://github.com/input-output-hk/mithril/issues/510)\\n- Worked on enforcing the API protocol versions in the client and signer [#633](https://github.com/input-output-hk/mithril/issues/633)\\n- Worked on deactivating the non certified signer registration mode [#621](https://github.com/input-output-hk/mithril/issues/621)\\n- Worked on the re-genesis of the test networks [#651](https://github.com/input-output-hk/mithril/issues/651)"},{"id":"2022-12-14-consensus","metadata":{"permalink":"/cardano-updates/2022-12-14-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-consensus.md","source":"@site/blog/2022-12-14-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2022-12-14T00:00:00.000Z","formattedDate":"December 14, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.995,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-12-14-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-12-15-mithril"},"nextItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2022-12-14-db-sync"}},"content":"## High level summary\\n\\nDuring the past two weeks, the Consensus team finalized the QSM tests for the\\nbacking store and Mempool on the UTxO-HD branch with important discoveries\\nregarding parallel QSM testing. We also worked with the Ledger team to envisage\\nthe modifications that are required in Ledger and Consensus to accommodate the\\nchanges in the crypto VRF and KES. The `db-analyser` now supports bechmarking\\nthe ledger operations, which will allow us to identify, debug, and profile\\npotential performance problems. We drafted a document that defines how to manage\\nthe versions of Consensus-related packages. The top level documentation of\\n`ouroboros-network` now features a description of the consensus components and\\nprovides a hyperlinked map to the modules documentation.\\n\\n## Workstreams\\n\\n### UTxO HD prototype\\n\\nWhereas we had passing sequential state-machine tests for the mempool, the\\nparallel case proved to be more challenging than we thought. The operation of\\nadding a list of transactions to the mempool is not atomic and, as a result,\\nwhen adding a list of transactions, transactions from other processes can be\\nadded in between. The mempool implementation handles this correctly, however\\nthis required us to [redesign][pull-4076] the parallel model we had to take\\nthe lack of atomicity into account.\\n\\n#### Backing store property tests\\n\\nWe finished refactoring the backing store property tests. The second review\\nround is ongoing.\\n\\n### LSM tree implementation\\n\\nWe are working on benchmarking (in terms of time and number of IO operations)\\nfetching/looking up data from disk.\\n\\n### Genesis \\n\\nWe worked on the design of a mechanism to prevent a DoS attack on our Genesis\\ndesign related to rollbacks. This was arguably the biggest outstanding question.\\n\\nDuring the discussions around Genesis, we noticed a design boundary that nicely\\ndelineates a fundamental component. We almost have a full Haskell prototype of\\nit. It will be very nicely self-contained, perhaps even usable in the ultimate\\nimplementation!\\n\\n### New VRF and KES crypto integration\\n\\nWe collaborated with the Ledger team on preparing the ledger state and crypto\\ntypes to avoid huge allocation on the epoch boundary when changing aspects of\\nthe crypto that will only manifest in headers, not in the ledger states.\\n\\n### Technical debt\\n\\nWe merged the [pull-request][pull-4014] that adds a support to `db-analyser` for\\nbenchmarking ledger operations. This will allow us to identify, debug, and\\nprofile potential performance problems. The benchmark focus on the main 5 ledger\\noperations that are involved in chain syncing, block forging, and block\\nvalidation, namely:\\n\\n0. Forecast.\\n1. Header tick.\\n2. Header application.\\n3. Block tick.\\n4. Block application.\\n\\nThe following figure shows a plot of the benchmarking results for the first 65\\nmillion blocks (approximately) of the Cardano chain. The thin yellow lines under\\nthe x-axis show the epoch boundaries, whereas the thick yellow lines correspond\\nto the era transitions.\\n\\n![](/images/consensus/2022-12-14-ledger-ops-benchmark.png)\\n\\nAs we can see in this figure, era and epoch boundaries require more computation\\ntime. The ledger team are aware of this problem, and we are working to improve\\nthis situation.\\n\\n### Fostering collaboration\\n\\nWe [drafted a document][pull-4207] motivating and defining how Consensus (and\\npossibly other core teams) will/should manage our package versions. This\\npull-request garnered many great discussions from our team members and other\\nteams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et\\nal. We want to thank you all for your input, and we found this discussion very\\nenlightening!\\n\\nWe merged the [pull request][pull-4197] that adds an overview of consensus to\\nthe [top level\\ndocumentation](https://input-output-hk.github.io/ouroboros-network/) of\\nouroboros-network. This overview describes the consensus components and adds a\\nhyperlinked map to the modules documentation.\\n\\n[pull-4207]: https://github.com/input-output-hk/ouroboros-network/pull/4207\\n[pull-4014]: https://github.com/input-output-hk/ouroboros-network/pull/4014\\n[pull-4076]: https://github.com/input-output-hk/ouroboros-network/pull/4076\\n[pull-4197]: https://github.com/input-output-hk/ouroboros-network/pull/4197"},{"id":"2022-12-14-db-sync","metadata":{"permalink":"/cardano-updates/2022-12-14-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-db-sync.md","source":"@site/blog/2022-12-14-db-sync.md","title":"DB-sync Team Update","description":"High level summary","date":"2022-12-14T00:00:00.000Z","formattedDate":"December 14, 2022","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.73,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB-sync Team Update","slug":"2022-12-14-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-12-14-consensus"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-12-14-node-cli-api"}},"content":"## High level summary\\n\\nThe DBSync team continued testing release `13.1.0.0`. The QA team has reported that no issues have\\nbeen found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.\\n\\n## Lower level summary\\n\\n- Release is cherry-picked back to master, which uses the new rollback mechanism which uses\\nreverse indexes, same as the release\\n[#1320](https://github.com/input-output-hk/cardano-db-sync/pull/1320)\\nThis also fixes a bug number of issues on master.\\n- Depenencies upgrade and CHaP integration\\n[#1324](https://github.com/input-output-hk/cardano-db-sync/pull/1324)\\n- AdaPots fix [#1323](https://github.com/input-output-hk/cardano-db-sync/pull/1323). This\\nfixes an issue where the per epoch AdaPots didn\'t match the epoch boundary, but\\nthey also included changes from the first block of the epoch.\\n- Deposits Event fix [#3212](https://github.com/input-output-hk/cardano-ledger/pull/3212). This pr\\nadjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the\\nnumber of queries that db-sync does during syncing an make syncing faster."},{"id":"2022-12-14-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-12-14-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-node-cli-api.md","source":"@site/blog/2022-12-14-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-12-14T00:00:00.000Z","formattedDate":"December 14, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.46,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-12-14-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"DB-sync Team Update","permalink":"/cardano-updates/2022-12-14-db-sync"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-12-14-performance-and-tracing"}},"content":"# 2022-12-14 - 2022-12-27\\n\\n## High level summary\\n\\nPRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. \\n\\n## Completed\\n\\n### docs\\n\\n- [Move style guide to wiki](https://github.com/input-output-hk/cardano-node/pull/4703)\\n\\n### CI & project maintenance\\n\\n- [Cache secp256k1](https://github.com/input-output-hk/cardano-node/pull/4734)\\n- [Use cabal-cache](https://github.com/input-output-hk/cardano-node/pull/4717)\\n- [build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx](https://github.com/input-output-hk/cardano-node/pull/4699)\\n- [Update cabal.project](https://github.com/input-output-hk/cardano-node/pull/4724)\\n\\n### Developer experience\\n\\n- [Add aarch64-darwin to nix-shell](https://github.com/input-output-hk/cardano-node/pull/4125)\\n\\n### cardano-cli\\n- [Improved error message for failed asset name decode](https://github.com/input-output-hk/cardano-node/pull/4626)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Remove cardano-cli address build-script](https://github.com/input-output-hk/cardano-node/pull/4700)\\n\\n### cardano-api\\n- [Move signing key reading to cardano-api](https://github.com/input-output-hk/cardano-node/pull/4698)\\n\\n### cardano-node\\n\\n### cardano-testnet\\n- [Only run chairman test on latest era](https://github.com/input-output-hk/cardano-node/pull/4712)\\n- [Add fix and test for `foldBlocks`](https://github.com/input-output-hk/cardano-node/pull/4679)\\n\\n## In Progress\\n\\n## CI & project mainteance\\n- [Copyright updates](https://github.com/input-output-hk/cardano-node/pull/4755)\\n\\n### cardano-cli\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Optimise query stake snapshot command](https://github.com/input-output-hk/cardano-node/pull/4179)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n- [Read network ID from environment](https://github.com/input-output-hk/cardano-node/pull/4666)\\n- [CLI option to append additional signatures to a transactions](https://github.com/input-output-hk/cardano-node/pull/4647)\\n- [Cardano ping](https://github.com/input-output-hk/cardano-node/pull/4664)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)\\n\\n### cardano-testnet\\n- [Cleanup exports of cardano-testnet](https://github.com/input-output-hk/cardano-node/pull/4636)"},{"id":"2022-12-14-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2022-12-14-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-14-performance-and-tracing.md","source":"@site/blog/2022-12-14-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2022-12-14T00:00:00.000Z","formattedDate":"December 14, 2022","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":3.095,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & tracing update","slug":"2022-12-14-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-12-14-node-cli-api"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-12-12-network"}},"content":"## High level summary\\n\\n1. SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.\\n2. A new workstream for Plutus cost modeling improvement:  we\'ve planned and started implementing the smart contract call overhead measurement machinery.\\n3. The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we\'re continuing with the further performance-oriented rework of the internals.\\n4. Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.\\n5. Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.\\n\\n## Performance\\n\\nThe SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we\'ll be running the model cluster workload.\\n\\nWe\'ve also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.\\n\\n## Tracing\\n\\nAfter the initial model-scale performance data caused us to panic, among other things we\'ve done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.\\n\\nTo understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:\\n\\n  1. We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that\'s also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.\\n  2. The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it\'s the fair benchmark, because that\'s the way we expect SPO\'s to set up tracing.  That, however also causes it to do more work.\\n\\nAll that said, since we\'ve established the performance of the new system to be adequate for the release, we won\'t be delaying it much further.\\n\\nIn addition, we\'re still pursuing our performance-enhancing rework of the new tracing internals.\\n\\n## Infrastructure\\n\\nAfter implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.\\n\\nMoving to analysis, we\'ve also improved provenance of the raw data, by collecting more identification information and statistics about it.\\nThis means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.\\nThis will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.\\n\\nA new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.\\nPreviously we only had automation for two aspects separately, so we only could either:\\n  - compare individual runs (used for different node configurations / versions)\\n  - collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)\\nNaturally, combining these two capabilities was a long-desired feature of our analysis pipeline."},{"id":"2022-12-12-network","metadata":{"permalink":"/cardano-updates/2022-12-12-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-12-network.md","source":"@site/blog/2022-12-12-network.md","title":"Network Team Update","description":"High level summary","date":"2022-12-12T00:00:00.000Z","formattedDate":"December 12, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"},{"label":"release","permalink":"/cardano-updates/tags/release"}],"readingTime":0.43,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-12-12-network","authors":"coot","tags":["network","release"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-12-14-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-12-09-crypto"}},"content":"## High level summary\\n\\nIn last sprint the team focused on preparations for the conference talk at\\n[OPODIS 2022].  We also worked on preparations to publish `io-sim` and related\\npackages on Hackage ([PR #57], [PR #60]).\\n\\nWe also started reviewing:\\n* `ouroboros-network`\\n* `cardano-node`\\n* `cardano-ledger`\\nrepositories for open-source readiness ([PR #4128]).\\n\\nWe prepared a PR which changes how `node-to-node` and `node-to-client` protocol\\nversiones are serialised in `cardano-node` log ([PR #4691]).\\n\\n[OPODIS 2022]: https://sites.uclouvain.be/OPODIS2022/\\n[PR #57]: https://github.com/input-output-hk/io-sim/pull/57\\n[PR #60]: https://github.com/input-output-hk/io-sim/pull/60\\n[PR #4128]: https://github.com/input-output-hk/ouroboros-network/pull/4218\\n[PR #4691]: https://github.com/input-output-hk/cardano-node/pull/4691"},{"id":"2022-12-09-crypto","metadata":{"permalink":"/cardano-updates/2022-12-09-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-crypto.md","source":"@site/blog/2022-12-09-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2022-12-09T00:00:00.000Z","formattedDate":"December 9, 2022","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.39,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2022-12-09-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-12-12-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-09-hydra"}},"content":"## High level summary\\nThe four open fronts that the crypto team is working on are:\\n* MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. \\n* Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. \\n* cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. \\n* KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.\\n\\n## Low level summary\\n### MuSig2\\n* [Still in progress] We are introducing a more granular error handling mechanism [PR#33](https://github.com/input-output-hk/musig2/pull/33)\\n* We merged the API redesig [PR#35](https://github.com/input-output-hk/musig2/pull/35)\\n* We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We\'ll probably circle back to this in the future [PR#36](https://github.com/input-output-hk/musig2/pull/36)\\n\\n### Mithril\\n* We merged the individual signature [PR#620](https://github.com/input-output-hk/mithril/pull/620)\\n* We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser ([kes repo](https://github.com/input-output-hk/kes/commits/master)) \\n\\n### cardano-base\\n* Nothing new to report. Still working in merging these PRs. \\n* We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a [bug in GHC](https://gitlab.haskell.org/ghc/ghc/-/issues/22564)\\n\\n## KES agent\\n* We keep progressing in the secure forgetting PR and resolving some bugs on memory handling [PR#255](https://github.com/input-output-hk/cardano-base/pull/255)\\n* Fixed a \'use-after-free\' bug in the KES agent."},{"id":"2022-12-09-hydra","metadata":{"permalink":"/cardano-updates/2022-12-09-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-hydra.md","source":"@site/blog/2022-12-09-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-12-09T00:00:00.000Z","formattedDate":"December 9, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.62,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-12-09-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-12-09-crypto"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-12-09-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has worked on completing to \\"Validate coordinated head protocol against formal model\\", this is a huge step to verify the implementation is secure. They also worked on implementing [ADR21](https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md) related to bounded tx validity which is now under review. [HydraPay](https://github.com/obsidiansystems/hydra-pay) project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of [issues](https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue) they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.\\n\\n## What did the team achieve this week\\n\\n- Document model based testing [#194](https://github.com/input-output-hk/hydra/issues/194) & [#641](https://github.com/input-output-hk/hydra/issues/641)\\n- Got [ADR21](https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md), reducing gaps between implementation and specification, under review.\\n- Complete review on `hydra-tutorial`.\\n- Complete first round of review on `HydraPay` work [#634](https://github.com/input-output-hk/hydra/issues/634)\\n- Meeting with `Director of CyberSecurity` frio `IOG` to unblock \\"the RFP prepared for the external audit\\" [#606](https://github.com/input-output-hk/hydra/issues/606)\\n- Remove `vasil-dev` and `testnet` from `smoke-test` because they were not working [#630](https://github.com/input-output-hk/hydra/issues/630)\\n- Fix flaky `plutus-merkle-tree` test [#642](https://github.com/input-output-hk/hydra/issues/642)\\n- Refactor `NetworkSpec` to improve legilibility.\\n- Fix benchmark cost for `abortTx` [#631](https://github.com/input-output-hk/hydra/issues/631)\\n- Adapt `nix.conf` to the recent hydra-ci nix cache migration.\\n\\n## What are the goals of next week\\n\\n- Get [ADR21](https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md) accepted & close tx validity gap in our implementation.\\n- Integrate the `hydra-tutorial`.\\n- Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.\\n- Get Cicero (new CI) working.\\n- Use reference inputs to reduce the cost of the `commitTx`."},{"id":"2022-12-09-ledger","metadata":{"permalink":"/cardano-updates/2022-12-09-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-09-ledger.md","source":"@site/blog/2022-12-09-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2022-12-09T00:00:00.000Z","formattedDate":"December 9, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.87,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-12-09-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-09-hydra"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-02-hydra"}},"content":"## High level summary\\n\\nThe Plutus tools team at IOG has started helping the ledger team to build out a user friendly\\n`cardano-ledger-api` package!\\nA [GitHub project](https://github.com/input-output-hk/cardano-ledger/projects/5)\\nwill be filled out in the days ahead,\\npeople interested in the API can use it to follow along and join in on the conversations.\\n\\nThe ledger team has started using\\n[architectural decision records](https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md)\\nto leave a record of important decisions that the team makes.\\nWe will retroactively go back through past decisions and make ADRs for them.\\n\\nThe logic to track individual deposits is now nearly in place.\\nWe are prioritizing correctness with our first pull request, and will follow up with\\nperformance optimizations and general cleanup next.\\n\\nPointer addresses are being deprecated with the Cardano major protocol version 8.\\nSee [CPS-0002](https://github.com/cardano-foundation/CIPs/pull/374)\\nfor more context.\\n\\n## Lower level summary\\n\\n#### Cardano ledger API\\n\\nThe **Plutus tools team** has taken our minimal `cardano-ledger-api` package and started filling it\\nout and adding much needed documentation.\\nThey have also added doctests!\\nIn the days to come, the Plutus tools team will map out a lot more work for the API and record\\nit in this\\n[GitHub project](https://github.com/input-output-hk/cardano-ledger/projects/5).\\n\\nSee\\n\\n* [pull-3182]\\n* [pull-3188]\\n\\n#### Architectural Decision Records (ADRs)\\n\\nWe are now providing more context and leaving a record of important decisions that are made\\nin the ledger. The first ADR explains the very lightweight process.\\n\\nSee\\n\\n* [pull-3177] (rendered [here](https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md))\\n\\n#### Tracking individual deposits\\n\\nSee [ADR-3](https://github.com/input-output-hk/cardano-ledger/pull/3190/files)\\nfor background.\\nWe now have the logic in place to track individual deposits, and a host of property tests\\nto make sure that the logic is correct.\\nThe current implementation uses more memory than it needs to, and we will address that next,\\nwith our hope being to only use one word (8 bytes) per registered stake credential.\\nThere is a fair amount of other cleanup needed for general maintainability.\\n\\nSee\\n\\n* [pull-3127]\\n* [pull-3195]\\n* [pull-3202]\\n\\n#### Removing pointer addresses\\n\\nPointer addresses, which have never seen any real use\\n(there are something like eleven on mainnet), are being deprecated starting at Cardano major\\nversion 9.\\n[CPS-0002](https://github.com/cardano-foundation/CIPs/pull/374) gives the context.\\nWe are disabling them by first preventing transaction outputs containing them\\nfrom being serialized by the node at the moment we switch to version 9.\\nAt the hard fork after that, we will translate the existing few pointer addresses\\nto enterprise addresses.\\n\\nSee\\n\\n* [pull-3174]\\n\\n#### Technical debt\\n\\n* [pull-3162] - Sometimes we have to put safeguards in place for hard forks which may never\\n  be exercised. After we have passed the given hardfork, we are able to clean up the code\\n  and simplify our logic. We removed all of the ones that we are currently easily able to.\\n* [pull-3165] - We improved the type safety of our code while also discovering and fixing\\n  a serialization bug.\\n* [pull-3172] - We removed dead code.\\n* [pull-3175] - The Allegra and the Mary code used to be coupled in a particular way the we grew to\\n  dislike. We made these two ledger eras now uniform with the rest of our code base.\\n* [pull-3184] - We organized our property testing code.\\n* [pull-3200] - The Plutus tools teams fixed an outstanding bug in the translation from the\\n  ledger state to the Plutus script context.\\n\\n\\n[pull-3127]: https://github.com/input-output-hk/cardano-ledger/pull/3127\\n[pull-3162]: https://github.com/input-output-hk/cardano-ledger/pull/3162\\n[pull-3165]: https://github.com/input-output-hk/cardano-ledger/pull/3165\\n[pull-3170]: https://github.com/input-output-hk/cardano-ledger/pull/3170\\n[pull-3172]: https://github.com/input-output-hk/cardano-ledger/pull/3172\\n[pull-3174]: https://github.com/input-output-hk/cardano-ledger/pull/3174\\n[pull-3175]: https://github.com/input-output-hk/cardano-ledger/pull/3175\\n[pull-3177]: https://github.com/input-output-hk/cardano-ledger/pull/3177\\n[pull-3182]: https://github.com/input-output-hk/cardano-ledger/pull/3182\\n[pull-3184]: https://github.com/input-output-hk/cardano-ledger/pull/3184\\n[pull-3188]: https://github.com/input-output-hk/cardano-ledger/pull/3188\\n[pull-3190]: https://github.com/input-output-hk/cardano-ledger/pull/3190\\n[pull-3195]: https://github.com/input-output-hk/cardano-ledger/pull/3195\\n[pull-3200]: https://github.com/input-output-hk/cardano-ledger/pull/3200\\n[pull-3202]: https://github.com/input-output-hk/cardano-ledger/pull/3202"},{"id":"2022-12-02-hydra","metadata":{"permalink":"/cardano-updates/2022-12-02-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-02-hydra.md","source":"@site/blog/2022-12-02-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-12-02T00:00:00.000Z","formattedDate":"December 2, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.965,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-12-02-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-12-09-ledger"},"nextItem":{"title":"DB sync Team Update","permalink":"/cardano-updates/2022-12-01-db-sync"}},"content":"## High-level summary\\n\\nThis week, the Hydra team has worked on cleaning up several things in progress\\nafter last week\'s summit. They have extended their model-based testing (MBT)\\napproach with transaction creation & observation\\n[#410](https://github.com/input-output-hk/hydra/issues/410), solved\\n`AcquirePointTooOld` problems of the `hydra-node` with by changing the wallet\\ninitialization [#439](https://github.com/input-output-hk/hydra/issues/439).\\nAlso, the Hydra researchers updated the security proofs of the Coordinated Hydra\\nHead, which are bound to be included in the Hydra HeadV1 specification.\\n\\n## What did the team achieve this week\\n\\n- Monthly review & report - will also be published on our website [#644](https://github.com/input-output-hk/hydra/pull/644)\\n- Extended the model-based testing (MBT) with transaction creation/observation [#410](https://github.com/input-output-hk/hydra/issues/410)\\n- Solve `AcquirePointTooOld` problems with new wallet initialization [#439](https://github.com/input-output-hk/hydra/issues/439)\\n- Fixed our hydraw deployments (EC2 instances)\\n- Created & discussed [ADR21](https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md) within tx validity work\\n- Received & discussed security proofs of Coordinated Hydra Head (requires more work)\\n\\n## What are the goals of next week\\n\\n- Get ADR21 accepted & close tx validity gap in our implementation\\n- Complete review & integrate the Hydra tutorial\\n- Review latest hydra-pay work\\n- Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec\\n- Get Cicero (new CI) working"},{"id":"2022-12-01-db-sync","metadata":{"permalink":"/cardano-updates/2022-12-01-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-db-sync.md","source":"@site/blog/2022-12-01-db-sync.md","title":"DB sync Team Update","description":"High level summary","date":"2022-12-01T00:00:00.000Z","formattedDate":"December 1, 2022","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.78,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB sync Team Update","slug":"2022-12-01-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-12-02-hydra"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-12-01-mithril"}},"content":"## High level summary\\n\\nThe DB Sync team prepared a release `13.1.0.0-rc2` which includes many improvements for db-sync,\\nit makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces\\nmigrations. This release finalises the objectives that were set for db-sync for the previous\\n3 months period and part of the syncing speed objective set for the next period\\n[Changelog](https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100)\\n\\n## Lower level summary\\n- Branch [release/13.1.0.x](https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b)\\nincludes all the improvements related to the release. The release is passing through the testing\\nphase and a number of bugs and issues have been fixed, like\\n[#1312](https://github.com/input-output-hk/cardano-db-sync/issues/1312)\\n[#1311](https://github.com/input-output-hk/cardano-db-sync/issues/1311).\\nAlso many new unit tests have been added.\\n\\n- Part of the release branch is cherry-picked back into master, in a way that it respects the new\\nrelease and development process, so that it takes into account migrations\\n[release process](https://github.com/input-output-hk/cardano-db-sync/issues/1305)\\n\\n- The DB Sync team has also tagged release `13.0.6` which better supports preview and preprod for\\ndocker."},{"id":"2022-12-01-mithril","metadata":{"permalink":"/cardano-updates/2022-12-01-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-mithril.md","source":"@site/blog/2022-12-01-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2022-12-01T00:00:00.000Z","formattedDate":"December 1, 2022","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.04,"hasTruncateMarker":false,"authors":[{"name":"Jean-Philippe Raynaud","title":"Mithril Tech Lead","url":"https://github.com/jpraynaud","imageURL":"https://github.com/jpraynaud.png","key":"jpraynaud"}],"frontMatter":{"title":"Mithril Team Update","slug":"2022-12-01-mithril","authors":"jpraynaud","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"DB sync Team Update","permalink":"/cardano-updates/2022-12-01-db-sync"},"nextItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2022-12-01-system-test"}},"content":"## High level overview\\nThe Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. \\n\\nFinally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.\\n\\n## Low level overview\\n- Implemented custom Mithril SPOs on testing/pre-release networks [#563](https://github.com/input-output-hk/mithril/issues/563)\\n- Deprecated Signer Declarative Pool Id registration mode [#585](https://github.com/input-output-hk/mithril/issues/585)\\n- Completed the second stage of the store automatic migration process [#600](https://github.com/input-output-hk/mithril/issues/600)\\n- Completed the deployment pipelines to crates.io registry [#588](https://github.com/input-output-hk/mithril/issues/588)\\n- Completed automatic generation of nodes/libraries versions manifest in releases notes [#599](https://github.com/input-output-hk/mithril/issues/599)\\n- Completed CI/CD handling of PR from forks [#597](https://github.com/input-output-hk/mithril/issues/597)\\n- Worked on the CIP design for Mithril piggybacked on the Cardano network layer [#586](https://github.com/input-output-hk/mithril/issues/586)\\n- Worked on signing the artifacts released in the distributions by the CI/CD [#587](https://github.com/input-output-hk/mithril/issues/587)\\n- Worked on multi-platforms end to end test [#601](https://github.com/input-output-hk/mithril/issues/601)\\n- Worked on the refactorizaton of the aggregator multi-signer engine [#398](https://github.com/input-output-hk/mithril/issues/398)"},{"id":"2022-12-01-system-test","metadata":{"permalink":"/cardano-updates/2022-12-01-system-test","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-12-01-system-test.md","source":"@site/blog/2022-12-01-system-test.md","title":"System Test Team Update","description":"High level summary","date":"2022-12-01T00:00:00.000Z","formattedDate":"December 1, 2022","tags":[{"label":"system-test","permalink":"/cardano-updates/tags/system-test"}],"readingTime":0.765,"hasTruncateMarker":false,"authors":[{"name":"Dorin Solomon","title":"System Test Team Lead","url":"https://github.com/dorin100","imageURL":"https://github.com/dorin100.png","key":"dorin100"}],"frontMatter":{"title":"System Test Team Update","slug":"2022-12-01-system-test","authors":"dorin100","tags":["system-test"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-12-01-mithril"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-11-30-consensus"}},"content":"## High level summary\\nDuring the last 2 weeks we did more improvements on our Test Framework, planned the testing of the _P2P Single \\nRelay_ functionality, and also tested some DB-Sync tags.\\n\\n## Workstreams\\n\\n### Framework improvements:\\n- moved the System Test CLI Pipelines from BuildKite to Github Actions\\n- improved the reporting tools to support the rerun of the failled tests and update of the reports \\n- added support for Github API in [report-aggregator](https://github.com/mkoura/report-aggregator), so reports will be generated from the GitHub nightly jobs from now on\\n- added support for mixed topology - P2P, legacy, mixed topologies\\n- planned the P2P Single Relay system test activities \\n- added support to start regression tests with PV8 + better selection of tests\\n\\n### DB-Sync:\\n- confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)\\n- tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2"},{"id":"2022-11-30-consensus","metadata":{"permalink":"/cardano-updates/2022-11-30-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-30-consensus.md","source":"@site/blog/2022-11-30-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2022-11-30T00:00:00.000Z","formattedDate":"November 30, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":2.4,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-11-30-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2022-12-01-system-test"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-30-node-cli-api"}},"content":"## High level summary\\n\\nDuring the past two weeks, the consensus team merged improvements to the monadic\\ncursor API that was needed to implement LMDB range reads, which is in turn\\nrequired for the implementation of the UTxO HD feature. We added tables to\\nseveral tests in for the UTxO HD feature, which increases our confidence in the\\ncorrectness of the prototype. The mempool property tests are close to being\\ncompleted. Also, we finished the LSM tree tuning algorithm.\\n\\nOn the Genesis front we started simplifying the BlockFetch logic with\\nCSJ-specific workloads in mind. \\n\\nWe are also documenting the Block Diffusion Pipelining feature, and added a\\nhigh-level overview of consensus to the top level documentation of\\n`ouroboros-network`.\\n\\n## Workstreams\\n\\n### UTxO HD prototype\\n\\nWe merged the implementation of a monadic cursor API ([#1][pull-1])) which was\\nneeded to solve a bug with LMDB range-reads. After this PR was merged, we focused on\\nbridging the gap between the `lmdb-simple` interface and consensus by facilitating\\nusing `lmdb-simple`\'s cursor API without `Serialise` constraints ([#3][pull-3]).\\n\\nWe refactored the backing store property tests to use `quickcheck-lockstep`\\n([#4081][pull-4081]).\\n\\nWe added tables to the mock ledger in the UTxO-HD feature branch\\n([#4184][pull-4184]). Every test that used to run with `SimpleBlocks` now uses\\ntables. This will enable us to exercise the UTxO HD mempool integration by\\nleveraging the existing mempool property-tests. The new state-machine\\nproperty-tests are still needed for testing the parallel behaviour of the\\nmempool.\\n\\nOur work on the mempool state-machine tests revealed the need for improvements\\nin the `quickcheck-state-machine` library. Parallel testing assumed that the\\nstate machine did not have access to mutable references. However, the mempool\\ntests require the use of such mutable references for mocking the ledger\\ninterface. As a result, our parallel tests were failing with rather obscure\\nmessages. @Jasagredo submitted a pull request ([#12][pull-12]) that allows for\\nnew mutable references to be created at each run of the state machine.\\n\\n#### Backing store property tests\\n\\n### LSM tree implementation\\n\\nWe finished the LSM Tree tuning algorithm. We are currently tidying up the code\\nand gathering results (i.e., plots and their interpretation).\\n\\n### CSJ prototype\\n\\nWe started simplifying the BlockFetch logic with CSJ-specific workloads in mind.\\n\\n### New VRF and KES crypto integration\\n\\nStarted working on supporting new version of `StandardCrypto` which uses compact\\nKES and batched VRF ([#4151][issue-4151]).\\n\\n### Technical debt\\n\\nWe reviewed the existing state of the Block Diffusion Pipelining document. We\\nare now working on the \\"Implementation\\" section ([#4020][issue-4020]).\\n \\n### Fostering collaboration\\n\\nWe cleared up our understanding of the error dynamics of forecasting\\n([#4146][pull-4146] and [#4174][pull-4174]).\\n\\nWe submitted a pull request that adds an overview of consensus to the [top level\\ndocumentation](https://input-output-hk.github.io/ouroboros-network/) of\\nouroboros-network ([#4197][pull-4197]). This overview describes the consensus components and adds a\\nhyperlinked map to the modules documentation.\\n\\nhttps://github.com/input-output-hk/ouroboros-network/pull/4197\\n\\n\\n[issue-4151]: https://github.com/input-output-hk/ouroboros-network/issues/4151\\n[pull-1]: https://github.com/input-output-hk/lmdb-simple/pull/1\\n[pull-3]: https://github.com/input-output-hk/lmdb-simple/pull/3\\n[pull-4081]: https://github.com/input-output-hk/ouroboros-network/pull/4081\\n[pull-4184]: https://github.com/input-output-hk/ouroboros-network/pull/4184\\n[pull-12]: https://github.com/stevana/quickcheck-state-machine/pull/12\\n[pull-4146]: https://github.com/input-output-hk/ouroboros-network/pull/4146\\n[pull-4174]: https://github.com/input-output-hk/ouroboros-network/pull/4174 \\n[issue-4020]: https://github.com/input-output-hk/ouroboros-network/issues/4020\\n[pull-4197]: https://github.com/input-output-hk/ouroboros-network/pull/4197"},{"id":"2022-11-30-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-11-30-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-30-node-cli-api.md","source":"@site/blog/2022-11-30-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-11-30T00:00:00.000Z","formattedDate":"November 30, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.01,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-11-30-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-11-30-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-11-30-performance-and-tracing"}},"content":"# 2022-11-30 - 2022-12-13\\n\\n## High level summary\\n\\nPRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. \\n## Completed\\n\\n### docs\\n\\n### cardano-cli\\n- [Append tx output in cli transaction build command](https://github.com/input-output-hk/cardano-node/pull/4675)\\n- [Update Error messages in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4592)\\n\\n### cardano-api\\n\\n### cardano-node\\n- [Replace Data.Map with Data.Map.Strict](https://github.com/input-output-hk/cardano-node/pull/4675)\\n- [Update Github actions](https://github.com/input-output-hk/cardano-node/pull/4708)\\n\\n### cardano-testnet\\n\\n## In Progress\\n\\n### cardano-cli\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Optimise query stake snapshot command](https://github.com/input-output-hk/cardano-node/pull/4179)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n- [Render consistent plutus script failure output](https://github.com/input-output-hk/cardano-node/pull/4659)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n- [Fully remove the cli intermediate TxBody format](https://github.com/input-output-hk/cardano-node/pull/4713)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)"},{"id":"2022-11-30-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2022-11-30-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-30-performance-and-tracing.md","source":"@site/blog/2022-11-30-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2022-11-30T00:00:00.000Z","formattedDate":"November 30, 2022","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.95,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & tracing update","slug":"2022-11-30-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-30-node-cli-api"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-11-28-network"}},"content":"## High level summary\\n\\n1. Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.\\n2. SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.\\n3. The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.\\n4. Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.\\n5. Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.\\n\\n## Performance\\n\\nWe have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don\'t see any significant performance changes.  The component bumps are therefore clear for release.\\n\\n## Tracing\\n\\nFor the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.\\nThe idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.\\n\\nTo support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.\\n\\n## Infrastructure\\n\\nGeneration support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.\\n\\nIn addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.\\n\\nThe intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.\\nWe are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.\\n\\nWe continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.\\n\\nWe are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.\\n\\nAs usual, a number of smaller workbench, data analysis & reporting improvements have been made."},{"id":"2022-11-28-network","metadata":{"permalink":"/cardano-updates/2022-11-28-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-28-network.md","source":"@site/blog/2022-11-28-network.md","title":"Network Team Update","description":"Stake-Driven Data Diffusion Release for Relays","date":"2022-11-28T00:00:00.000Z","formattedDate":"November 28, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"},{"label":"release","permalink":"/cardano-updates/tags/release"}],"readingTime":3.675,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-11-28-network","authors":"coot","tags":["network","release"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-11-30-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-11-25-crypto"}},"content":"## Stake-Driven Data Diffusion Release for Relays\\n\\nIOG networking team decided to release the _Stake-Driven Data Diffusion with\\nRobust Optimised Peer Selection_ also more commonly known as _P2P_.  In the\\nlast update, we informed about a performance regression, but it turns out it\\nonly affects block producers, and thus we highly advise against running it on\\nsuch nodes.  Further investigation is required to find the cause of it.\\n\\nOn IOG\'s benchmarking cluster we have seen quite a good performance improvement\\non block propagation itself.  The cluster is running a static topology with\\nvalency 6 (each node is connected to 6 other nodes).  In which every of the 50\\nnodes are block producers.  The setup of this network is the same as mainnet.\\nWe\'ve seen 40-50% performance improvement on block propagation comparing to the\\nsame cluster deployed with the same topology but using non-P2P nodes.  We think\\nthis performance improvement is caused by using full duplex connections.  Quite\\nlikely the transaction traffic floating in both directions on the same TCP\\nconnection helps to keep the TCP window open.  Note that in a cluster of 50\\nnodes with valency 6 the probability of having at least one duplex connection\\nis more than 50%.  We don\'t expect the same improvement on mainnet because the\\nnetwork is much wider and the transaction traffic is not as large.\\n\\nJust before the release we squashed two small bugs:\\n\\n* [issue #4163] - top level integration bug in `keep-alive`;\\n* [issue #4177] - a bug in `outbound-governor`;\\n* [PR #4165] - a fix `cardano-ping` support of `NodeToNodeV_10`.\\n\\n\\n### Peer Sharing\\n\\nWe were carrying a review of [peer sharing PR][PR #4019].\\n\\n### DeltaQ\\n\\nNeil Davies was invited to give a guest lecture entitled `Avoiding System Catastrophes` at [UCLouvain].\\n\\n## What have we achieve last sprint\\n\\n* [issue #4163]: we found out that a control message is not passed to the\\n  `keep-alive` mini-protocol, this results in every demotion executing demotion\\n  timeout rather than a graceful termination.  With the fix the node will no longer log:\\n  ```json\\n  { \\"kind\\": \\"PeerStatusChangeFailure\\"\\n  , \\"peerStatusChangeType\\": \\"WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})\\"\\n  , \\"reason\\": \\"TimeoutError\\"\\n  }\\n  ````\\n\\n* [issue #4177]: we fixed an assertion failure in the `outbound-governor`; now\\n  we don\'t try demoted peers which are being demoted already.\\n\\n* [PR #4155]: we refactored `ouroboros-network` packages.  There\'s a top level\\n  `ouroboros-consensus-diffusion` package which integrates `network`\\n  & `consensus` code.  We also introduced:\\n\\n  - `ouroboros-network-api` package which contains the API shared between\\n    `network` & `conensus`;\\n  - `ouroboros-network-mock` package which contains mock API used for testing\\n    (e.g. a mock chain & chain producer, etc.)\\n  - `ouroboros-network-protocols` package which contains implementation of all\\n    (but `handshake`) mini-protocols, exposes a `testlib` and contains `test`\\n    and `cddl` components.\\n\\n  This made the dependency tree of `network` & `consensus` packages much\\n  cleaner.\\n\\n* [PR #4169]: we described the usage of release branches in `CONTRIBUTING.md`\\n  doc.\\n\\n* [PR #4165]: we fixed `cardano-ping` support of `NodeToNodeV_10` protocol.\\n\\n\\n### DeltaQ\\n\\nThe abstract of the talk:\\n\\n> An essential step to ensuring that distributed systems are fit for\\n> purpose.\\n>\\n> Distributed systems have become an integral part of our society and\\n> daily lives. We are, both implicitly and explicitly, individually as well as\\n> collectively, placing ever more trust in them.\\n>\\n> Are they worthy of this trust?  Our need for them to be \u2018fit-for-purpose\u2019 goes\\n> well beyond notions of functional correctness (i.e. never getting the wrong\\n> answer). We need them to deliver the desired outcomes in a timely, robust,\\n> reliable, resilient fashion, at scale and in a sustainable way (both\\n> economically and environmentally).\\n>\\n> This all sounds like a worthy aspiration, but what would be a practical\\n> approach to capturing and reasoning about these issues? How can we ensure that\\n> systems can meet their fit-for-purpose objectives, not just in their design but\\n> as they are deployed, encounter the imperfect world, are scaled to become\\n> economic, and proceed into ongoing maintenance?\\n>\\n> This talk will illustrate how the notions of Outcomes and Quality Attenuation\\n> (as captured by \u2018\u2206Q\u2019) are being used to both frame the necessary notions and\\n> provide a basis for assuring the refinement and reification of such systems,\\n> from initial concept to operational infrastructure.\\n\\nYou can download the slides from [here](../static/pdf/network/2022-11-24-UCL.pdf).\\n\\n[issue #4163]: https://github.com/input-output-hk/ouroboros-network/issues/4163\\n[issue #4177]: https://github.com/input-output-hk/ouroboros-network/issues/4177\\n[PR #4155]: https://github.com/input-output-hk/ouroboros-network/pull/4155\\n[PR #4169]: https://github.com/input-output-hk/ouroboros-network/pull/4169\\n[PR #4165]: https://github.com/input-output-hk/ouroboros-network/pull/4165\\n[PR #4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[UCLouvain]: https://uclouvain.be/en/index.html"},{"id":"2022-11-25-crypto","metadata":{"permalink":"/cardano-updates/2022-11-25-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-25-crypto.md","source":"@site/blog/2022-11-25-crypto.md","title":"Crypto Team Update","description":"High level summary","date":"2022-11-25T00:00:00.000Z","formattedDate":"November 25, 2022","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.705,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2022-11-25-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-11-28-network"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-25-hydra"}},"content":"## High level summary\\nThe four open fronts that the crypto team is working on are:\\n* MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. \\n* Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes\\n* cardano-base: The VRF and BLS branchs are still open and in progress\\n* KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. \\n\\n## Low level summary\\n### MuSig2\\n* We redesigned the library so that MuSig2 lib users don\'t need to be aware of the underlying secp256k1 library [PR#31](https://github.com/input-output-hk/musig2/pull/31)\\n* We are introducing a more granular error handling mechanism [PR#33](https://github.com/input-output-hk/musig2/pull/33)\\n* We rethought the API and made it more consistent with the underlying secp256k1 library [PR#35](https://github.com/input-output-hk/musig2/pull/35)\\n\\n### Mithril\\n* The mithril crates in general will be published in crates.io, and we adapted the core library\'s README [PR#616](https://github.com/input-output-hk/mithril/pull/616) \\n* We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information [PR#620](https://github.com/input-output-hk/mithril/pull/620)\\n\\n### cardano-base\\n* We\'ve been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) [PR#341](https://github.com/input-output-hk/cardano-base/pull/341)\\n* SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions [PR#344](https://github.com/input-output-hk/cardano-base/pull/344)\\n* Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus [PR#266](https://github.com/input-output-hk/cardano-base/pull/266)\\n\\n## KES agent\\n* We keep progressing in the secure forgetting PR and resolving some bugs on memory handling [PR#255](https://github.com/input-output-hk/cardano-base/pull/255)\\n* Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation."},{"id":"2022-11-25-hydra","metadata":{"permalink":"/cardano-updates/2022-11-25-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-25-hydra.md","source":"@site/blog/2022-11-25-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-11-25T00:00:00.000Z","formattedDate":"November 25, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.73,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-11-25-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-11-25-crypto"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-23-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a [presentation](https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/) about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.\\n\\n## What did the team achieve this week\\n\\n- Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/>\\n- Had a team workshop / hackathon after the summit:\\n    - Retrospective\\n    - Impact mapping session\\n    - Hacked on smaller things\\n- Got a PR for tullia/cicero things by @kdermetfan\\n\\n## What are the goals of next week\\n\\n- Monthly report & review meeting\\n- Tie up several loose ends / branches.\\n- Resolve Tx validity discussions & PRs.\\n- Review cicero PR & try it out."},{"id":"2022-11-23-ledger","metadata":{"permalink":"/cardano-updates/2022-11-23-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-23-ledger.md","source":"@site/blog/2022-11-23-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2022-11-23T00:00:00.000Z","formattedDate":"November 23, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.19,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-11-23-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-25-hydra"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-18-hydra"}},"content":"## High level summary\\n\\nWe released [CIP-1694],\\nour proposal for entering the [Voltaire phase](https://roadmap.cardano.org/en/voltaire/).\\n**Please come join the discussion**, this will be an incredibly exciting transition for\\nCardano and we want everyone to participate!\\n\\nWe now have a sensible way to version all of the serialization schemes used in the ledger.\\nThe draft pull request was polished, reviewed, and merged this week.\\nThis solves many problems that have vexed us since the beginning of the Shelley ledger era.\\n\\nEveryone working on the Cardano node is working together to improve our release process,\\nand the ledger team in particular dedicated one engineer to help with these efforts\\nfor the next release.\\n\\n## Lower level summary\\n\\n### The Conway ledger era\\n\\nThe current proposal in [CIP-1694] encompasses two new ledger eras.\\nThe first era will be called Conway, after the English mathematician John Horton Conway.\\nThe community facing aspects of the Conway ledger era will be very minimal,\\nbut it will pave the way for introducing liquid democracy.\\nThe details can be viewed [here](https://github.com/input-output-hk/cardano-ledger/projects/4).\\nWe do not yet have a formal specification for the Conway era.\\nOur plan is to debut the\\n[formal ledger model](https://github.com/input-output-hk/formal-ledger-specifications).\\nBriefly, the Conway ledger era will:\\n* introduce SPO voting for hard forks (in the spirit of the now abandoned [CIP-47])\\n* provide an on-chain mechanism for rotating the governance keys\\n* re-plumb the ledger rules involving governance to be in line with [CIP-1694]\\n\\n### Versioned CBOR\\n\\nWe now have the ability to easily tie our serialization schemes to the Cardano\\nmajor protocol version.\\nWe still aim to preserve backwards compatibility as much as possible, but we now have a principled\\nplan for resolving problems (see [CIP-ledger-cbor]).\\nIn particular, we can now address several long standing issues, such as\\n[issue-2444], [issue-2965], and [issue-3003]. \\n\\nThe final (and massive!) pull request which brought us the versioning is [pull-3138].\\n\\n### Deposit tracking\\n\\nThe draft pull request which was exploring how best to track individual deposits\\nis much closer now to being ready to take out of draft ([pull-3127]).\\nFor background on the issue, see [issue-3113].\\nThis is quite an invasive change which effects many of our tests, which we are now addressing.\\n\\n### Technical debt\\n\\nAs always, we keep working on technical debt.\\nWe have deduplicated a some things: [pull-3129], [pull-3162].\\nWe have memoized a problematic computation (though more due diligence is needed before we can\\nmerge): [pull-3141].\\n\\n### Node release\\n\\nWe have been helping with the node release efforts. See [pull-4608].\\n\\n[CIP-47]: https://github.com/cardano-foundation/CIPs/pull/318\\n[CIP-1694]: https://github.com/cardano-foundation/CIPs/pull/380\\n[CIP-ledger-cbor]: https://github.com/cardano-foundation/CIPs/pull/372\\n[issue-3003]: https://github.com/input-output-hk/cardano-ledger/issues/3003\\n[issue-2965]: https://github.com/input-output-hk/cardano-ledger/issues/2965\\n[issue-2444]: https://github.com/input-output-hk/cardano-ledger/issues/2444\\n[issue-3113]: https://github.com/input-output-hk/cardano-ledger/issues/3113\\n[pull-3129]: https://github.com/input-output-hk/cardano-ledger/pull/3129\\n[pull-3141]: https://github.com/input-output-hk/cardano-ledger/pull/3141\\n[pull-3127]: https://github.com/input-output-hk/cardano-ledger/pull/3127\\n[pull-3162]: https://github.com/input-output-hk/cardano-ledger/pull/3162\\n[pull-3138]: https://github.com/input-output-hk/cardano-ledger/pull/3138\\n[pull-4608]: https://github.com/input-output-hk/cardano-node/pull/4608"},{"id":"2022-11-18-hydra","metadata":{"permalink":"/cardano-updates/2022-11-18-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-18-hydra.md","source":"@site/blog/2022-11-18-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-11-18T00:00:00.000Z","formattedDate":"November 18, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.085,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-11-18-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-23-ledger"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-11-18-mithril"}},"content":"## High-level summary\\n\\nThis week, the Hydra team released version `0.8.1`, which includes several fixes and a user-wished extension of the persistence introduced by `0.8.0` of replaying server outputs to make clients like the `hydra-tui` be aware of the latest `hydra-node` state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from `hydra-poc` to [`hydra`](https://github.com/input-output-hk/hydra)!\\n\\n## What did the team achieve this week\\n\\n- Implemented replaying of server outputs to address [#580](https://github.com/input-output-hk/hydra-poc/issues/580)\\n- Released version 0.8.1 containing this and other fixes [Release notes](https://github.com/input-output-hk/hydra/releases/tag/0.8.1)\\n- Worked on the bounded tx validity as one of the on-chain script fixes, but couldn&rsquo;t finish it just yet [#615](https://github.com/input-output-hk/hydra/pull/615)\\n- Collaborated with the education team on a Hydra tutorial.\\n- Discovered and discussed issues with the &ldquo;seen ledger&rdquo;.\\n- Renamed the Hydra repository `hydra-poc` -> `hydra`\\n\\n## What are the goals of next week\\n\\n- Create and discuss an ADR about handling tx validity correctly.\\n- Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: **\\"Developing Hydra\\" on Day 2, Nov 21st, 13:50 CET**\\n- Have a team workshop / hackathon after the summit:\\n  - Retrospective\\n  - Roadmapping session\\n  - Hack on something complex or useful"},{"id":"2022-11-18-mithril","metadata":{"permalink":"/cardano-updates/2022-11-18-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-18-mithril.md","source":"@site/blog/2022-11-18-mithril.md","title":"Mithril Team Update","description":"High level overview","date":"2022-11-18T00:00:00.000Z","formattedDate":"November 18, 2022","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.35,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Mithril Team Update","slug":"2022-11-18-mithril","authors":"iquerejeta","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-18-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-11-16-consensus"}},"content":"## High level overview\\nThe Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. \\n\\nFinally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.\\n\\n## Low level overview\\n- Released a new Mithril distribution [2246.1](https://github.com/input-output-hk/mithril/releases/tag/2246.1)\\n- Completed the first stage of the store migrations process [#562](https://github.com/input-output-hk/mithril/issues/562)\\n- Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes [#565](https://github.com/input-output-hk/mithril/issues/565)\\n- Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage [#576](https://github.com/input-output-hk/mithril/issues/576)\\n- Prepared a Daedalus synchronization benchmark video with/without Mithril [#606](https://github.com/input-output-hk/mithril/issues/606)\\n- Upgraded the Cardano nodes of the testing Mithril networks to `1.35.4` [#594](https://github.com/input-output-hk/mithril/issues/594)\\n- Worked on implementing SPO tests nodes on testing Mithril networks [#563](https://github.com/input-output-hk/mithril/issues/563)\\n- Worked on the CIP design for Mithril piggybacked on the Cardano network layer [#588](https://github.com/input-output-hk/mithril/issues/588)\\n- Worked on the refactorizaton of the aggregator multi signer engine [#398](https://github.com/input-output-hk/mithril/issues/398)"},{"id":"2022-11-16-consensus","metadata":{"permalink":"/cardano-updates/2022-11-16-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-consensus.md","source":"@site/blog/2022-11-16-consensus.md","title":"Consensus Team Update","description":"High-level summary","date":"2022-11-16T00:00:00.000Z","formattedDate":"November 16, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":5.06,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-11-16-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-11-18-mithril"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-16-node-cli-api"}},"content":"## High-level summary\\n\\nDuring the past two weeks, the consensus team started documenting the\\nimplementation of the UTxO HD feature and continued developing tests for it. As\\npart of our work on UTxO HD, we improved the Haskell support for LMDB. We also\\nspent time working on the LSM tree prototype, and designed a parameter tuning\\nalgorithm for it. Regarding our work on Genesis, our investigation of the\\n\\"plateaus\\" pointed at the `TICKF` slowdown on era boundaries as culprit. This\\nled us to developing a caching strategy that will not only remove the\\naforementioned \\"plateaus\\", but can help alleviating the growing block production\\ndelay on epoch switch. We also helped reviewing the block forge credential\\nhotswap feature, which is intended for use in the adoption of P2P.\\n\\nWe also worked on paying technical debt and fostering collaboration. In\\nparticular, we improved the `io-sim` framework, which is crucial for testing and\\nsimulating Cardano components. We also removed thunks that appeared on era\\ntranslations, and improved our diffusion pipelining feature. We are working on a\\npresentation for explaining Praos and Genesis.\\n\\n## High-level status report\\n\\n- Finish the UTxO HD prototype: in progress.\\n  - We added documentation for this feature.\\n  - We developed the second version of the mempool tests.\\n  - We fixed benchmarks that were inflating the speedup we observed in the\\n    anti-diff implementation of sequences of differences. Speedups are now in the\\n    range of [3.33, 4.75], which remain significant.\\n  - We continued improving Haskell LMDB support.\\n  - We finished implementing a \\"parameter tuning algorithm\\" for the LSM tree\\n    prototype. This enables us to run experiments to check the correctness of\\n    the algorithm.\\n- Genesis: in progress.\\n  - Work investigating the \\"plateaus\\" in the `ChainSync` jumping prototype\\n    pointed to the `TICKF` slowdown on era boundaries as culprit.\\n- Tech debt:\\n  - We improved the capabilities of our `io-sim` library, which is crucial for\\n    testing and simulating Cardano components.\\n  - We removed thunks from epoch translations in the ledger.\\n  - We added Linux CI support for `lmdb-simple`.\\n  - We got pending diffusion pipelining improvements merged.\\n- Fostering collaboration:\\n  - We are working on a explanation of Praos and Genesis protocols.\\n- Support:\\n  - Investigation of CSJ \\"plateaus\\" led us to developing a caching strategy for\\n    `TICKF` that will not only remove these \\"plateaus\\", but can help alleviating\\n    the growing block production delay on epoch switch.\\n  - We reviewed the block forge credential hotswapping feature which is intended\\n    for use in the adoption of P2P.\\n\\n## Workstreams\\n\\n### Finish the UTxO HD prototype\\n\\nWe merged PR [#4060][pr-4060], which adds a report documenting the UTxO HD\\nfeature, and puts emphasis in explaining how the mempool works in combination\\nwith UTxO HD.\\n\\nWe opened a draft PR with the second iteration of the property tests for the\\nmempool ([#4076][pr-4076]).\\n\\nWe fixed the `Arbitrary` instances for keys and values in `DiffSeq` benchmarks\\n([#4143][pr-4143]). The problem was that we were testing with mostly small\\nvalues, which artificially boosted the performance gains we saw on benhcmarks.\\nSpeedups are now in the range of [3.33, 4.75] across the different\\nconfigurations.\\n\\n#### Backing store property tests\\n\\nWe focused on incorporating feedback on the monadic cursor API PR ([#1][pr-1]).\\nThis required us to make small tweaks to `quickcheck-lockstep` to test the new\\nAPI. We also updated the backing store property tests to use the new version of\\nthe monadic cursor API.\\n\\n### LSM tree implementation\\n\\nWe worked on the LSM tree prototype. In particular: finished implementing a\\n\\"parameter tuning algorithm\\" that adapts the LSM tree design based on factors\\nlike:\\n- workload\\n- machine specs, \\n- and characteristics of the data being stored. \\n\\nWe are now running experiments to gather results and cross-reference them with\\nexisting experimental results from the LSM tree paper to see if the algorithm is\\nworking correctly.\\n\\n### Benchmarking the CSJ prototype\\n\\nWe focused on investigating the \\"plateaus\\" in the `ChainSync` tip, which turned\\nout to be due to the `TICKF` bug which we previously were only aware of in the\\ncontext of the long forging times near epoch boundaries. For the most drastic\\npatch by @nfrisby to speed up `TICKF`, full sync is speeding up by 7%.\\n\\nThe following plot shows that by caching the `TICKF` the `ChainSync` tip and the\\n`VolatileDB` tip progress at the same rate.\\n\\n![](/images/consensus/2022-11-16-removed-stuttering.png)\\n\\nThe plot below shows the speedup observed by caching the `TICKF` rule wrt the\\nbaseline.\\n\\n![](/images/consensus/2022-11-16-comparing-TICKF-batch.png)\\n\\n### Technical debt\\n\\nAfter addressing the PR comments, we merged PR [#16][pr-16], which implements\\nthe `MonadCatch` instance for `STM`. This extends the capability of our `io-sim`\\nlibrary, which is crucial for testing and simulating Cardano components PR #16\\nclosed [#1461][issue-1461]. This new feature was published as version `0.4.0.0`\\nof `io-sim`.\\n\\nWe continued with our work fixing the `NoThunk` errors required for enabling\\nnightly tests, with the help of `TVarInvariant` checks in `strict-stm` and\\n`nothunks` libraries. We proposed fixes in `cardano-ledger` that took care of\\nthunks that appeared in era translations ([#3143][pr-3143]). The fixes will be\\nintegrated back into consensus when `cardano-ledger` approves and publish the\\nchanges introduced in `#3143`.\\n\\nWe added CI support for `lmdb-simple` ([#2][pr-2]). We currently test the build on\\na Linux environment only.\\n\\nWe got pending diffusion pipelining PRs ([#3857][pr-3857], [#3860][pr-3860],\\n[#3856][pr-3856]) merged, after rebasing and addressing feedback.\\n\\n### Fostering collaboration\\n\\n@nfrisby finished a visualisation tool and outlined scripts for the Praos and\\nGenesis explanation presentations. The idea is to produce a video that gives an\\noverview of these protocols.\\n\\n### Support \\n\\nWe started working on caching the computation of the `TICKF` rule\\n([#4054][issue-4054]), since this was blocking our benchmarking work for\\nGenesis. In addition, this issue has the Cardano community [quite\\nconcerned][issue-4421], so we are hoping the work done in caching the\\ncomputation of the `TICKF` rule can help alleviating the growing block\\nproduction delay on epoch switch.\\n\\nWe reviewed the block forge credential hotswapping PR [#3800][pr-3800] from the\\nnetworking team, which is intended for use in the adoption of P2P.\\n\\n[issue-4054]: https://github.com/input-output-hk/ouroboros-network/issues/4054\\n[issue-4421]: https://github.com/input-output-hk/cardano-node/issues/4421\\n[issue-1461]: https://github.com/input-output-hk/ouroboros-network/issues/1461\\n\\n[pr-3800]: https://github.com/input-output-hk/ouroboros-network/pull/3800\\n[pr-16]:   https://github.com/input-output-hk/io-sim/pull/16\\n[pr-3143]: https://github.com/input-output-hk/cardano-ledger/pull/3143\\n[pr-4060]: https://github.com/input-output-hk/ouroboros-network/pull/4060\\n[pr-4076]: https://github.com/input-output-hk/ouroboros-network/pull/4076\\n[pr-1]:    https://github.com/input-output-hk/lmdb-simple/pull/1\\n[pr-4143]: https://github.com/input-output-hk/ouroboros-network/pull/4143\\n[pr-2]:    https://github.com/input-output-hk/lmdb-simple/pull/2\\n[pr-3857]: https://github.com/input-output-hk/ouroboros-network/pull/3857\\n[pr-3860]: https://github.com/input-output-hk/ouroboros-network/pull/3860\\n[pr-3856]: https://github.com/input-output-hk/ouroboros-network/pull/3856"},{"id":"2022-11-16-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-11-16-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-node-cli-api.md","source":"@site/blog/2022-11-16-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-11-16T00:00:00.000Z","formattedDate":"November 16, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":0.68,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-11-16-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-11-16-consensus"},"nextItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-11-16-performance-and-tracing"}},"content":"# 2022-11-16 - 2022-11-29\\n\\n## High level summary\\n\\n## Completed\\n\\n### docs\\n- [Add a native tokens tutorial and exercises](https://github.com/input-output-hk/cardano-node/pull/4562)\\n\\n### cardano-cli\\n- [Update cardano-cli\'s help](https://github.com/input-output-hk/cardano-node/pull/4674)\\n- [Remove error calls in renderShelleyTxCmdError](https://github.com/input-output-hk/cardano-node/pull/4644)\\n\\n### cardano-api\\n- [Implement Cardano.Api.DeserialiseAnyOf](https://github.com/input-output-hk/cardano-node/pull/4639)\\n\\n### cardano-node\\n- [Fix windows CI](https://github.com/input-output-hk/cardano-node/pull/4650)\\n\\n### cardano-testnet\\n\\n## In Progress\\n\\n### cardano-cli\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Optimise query stake snapshot command](https://github.com/input-output-hk/cardano-node/pull/4179)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n- [Handle pipes in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4625)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)"},{"id":"2022-11-16-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2022-11-16-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-16-performance-and-tracing.md","source":"@site/blog/2022-11-16-performance-and-tracing.md","title":"Performance & tracing update","description":"High level summary","date":"2022-11-16T00:00:00.000Z","formattedDate":"November 16, 2022","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.635,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & tracing update","slug":"2022-11-16-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-16-node-cli-api"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-11-11-crypto"}},"content":"## High level summary\\n\\n1. P2P performance investigation is ongoing, in support of the networking team.\\n2. SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.\\n3. Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.\\n4. On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.\\n5. We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.\\n\\n\\n## Performance\\n\\nWe are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.\\n\\n## Tracing\\n\\nWe ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.\\n\\n## Infrastructure\\n\\nThe first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.\\n\\nWe designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.\\n\\nA number of smaller workbench, data analysis & reporting improvements have been made."},{"id":"2022-11-11-crypto","metadata":{"permalink":"/cardano-updates/2022-11-11-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-crypto.md","source":"@site/blog/2022-11-11-crypto.md","title":"Crypto Team Update","description":"High level overview","date":"2022-11-11T00:00:00.000Z","formattedDate":"November 11, 2022","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.305,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2022-11-11-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & tracing update","permalink":"/cardano-updates/2022-11-16-performance-and-tracing"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-11-hydra"}},"content":"## High level overview\\n\\nThe SECP primitives AC has been met, and the test-vectors [PR](https://github.com/input-output-hk/cardano-base/pull/320) has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool [PR](https://github.com/input-output-hk/cardano-base/pull/336) has been merged, and we\'ve adapted the KES secure [PR](https://github.com/input-output-hk/cardano-base/pull/255) to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork ([PR#](https://github.com/input-output-hk/cardano-base/pull/341)). Finally, we\'ve \'cleaned\' our libsodium fork, and we directly fork upstream, rather than forking Algorand\'s fork. \\n\\n## Low level overview\\n* With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  \\n* We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. \\n* In parallel, we keep progressing on the [KES agent](https://github.com/input-output-hk/kes-agent)\\n* VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. \\n* Our libsodium fork now links directly to upstream libsodium."},{"id":"2022-11-11-hydra","metadata":{"permalink":"/cardano-updates/2022-11-11-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-hydra.md","source":"@site/blog/2022-11-11-hydra.md","title":"Hydra Team Update","description":"High-level summary","date":"2022-11-11T00:00:00.000Z","formattedDate":"November 11, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.94,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-11-11-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-11-11-crypto"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-11-ledger"}},"content":"## High-level summary\\n\\nThis week, the Hydra team published together with Obsidian Systems a light paper\\non our \\"Hydra for Payments\\" project ([Link](https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/)). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of `hydra-node` processes. \\n\\n## What did the team achieve this week\\n\\n- Published Hydra for Payments light paper ([Link](https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/))\\n- Have a draft RFP ready for a first review internally\\n- Answered the internal auditor&rsquo;s questions\\n- Fixed a bug with following the chain when starting with persistence ([#599](https://github.com/input-output-hk/hydra-poc/issues/599))\\n- Minor improvements to logging for better observability ([#598](https://github.com/input-output-hk/hydra-poc/issues/598), [#600](https://github.com/input-output-hk/hydra-poc/issues/600))\\n- Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look ([#590](https://github.com/input-output-hk/hydra-poc/issues/590))\\n\\n## What are the goals of next week\\n\\n- Implement event-sourced persistence [#580](https://github.com/input-output-hk/hydra-poc/issues/580)\\n- Close more gaps [#452](https://github.com/input-output-hk/hydra-poc/pull/452)\\n- Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: **\\"Developing Hydra\\" on Day 2, Nov 21st, 13:50 CET**"},{"id":"2022-11-11-ledger","metadata":{"permalink":"/cardano-updates/2022-11-11-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-ledger.md","source":"@site/blog/2022-11-11-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2022-11-11T00:00:00.000Z","formattedDate":"November 11, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.41,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-11-11-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-11-hydra"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-11-11-network"}},"content":"## High level summary\\n\\nI am extremely excited to say that we now have a pull request up which introduces our new versioned\\nCBOR serialization. This was an enormous effort, but it will solve a host of problems that we have\\nhad since the Shelley phase. It will take time to properly review it, and we will\\nneed to put in a lot of effort to integrate it with the downstream components, but this is  a huge\\nmilestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction\\nserialization schemes.\\n\\nWe also have a draft pull request that reworks how deposits are tracked. Users of the system will\\nnot notice any difference, but it is a necessary change needed to prepare the way for\\ndecentralizing the governance of Cardano.\\n\\nFinally, we continued to address technical debt. In particular, we continued to make progress on\\nbringing coherency and consistency to the code base with a common naming convention, and\\nimproving some error messages.\\n\\n## Lower level summary\\n\\n- We have a pull request up for our new versioned CBOR serialization.\\n  When we encounter a problem with our deserializers, it can be very difficult to implement a fix.\\n  It is difficult because we can only fix such issues during a hard fork, and leading up to the\\n  hard fork we must maintain two serializations for the same type in order to not cause unintended\\n  network splitting (the problematic version must be used before the hard fork,\\n  and the fixed version is used afterwards).\\n  This can be especially tricky with the `FromCBOR` typeclass, since it is not always easy to\\n  search for where all the problematic uses are located.\\n  The new versioned CBOR serialization allows us to gracefully handle this transition.\\n  See [[pull-3138]].\\n- We proposed a CIP for backwards compatibility of the transaction serialization schemes.\\n  See [[pull-372]].\\n- We have draft for the new deposit tracking.\\n  This draft is not as memory efficient as the final version will be,\\n  but it is a sufficient proof of concept that we can write property tests against, ensuring\\n  that we have not changed the semantics.\\n  We will optimize after we are sure of the correctness.\\n  See [[pull-3127]].\\n- We now provide better support for debugging failed Plutus scripts in an important helper\\n  function, named `evaluateTransactionExecutionUnits`.\\n  In particular, it now returns all the information needed to rerun the script with exactly the\\n  same arguments. This feature will end up appearing in the CLI and other tools from the Plutus\\n  tools team.\\n  See [[pull-3135]].\\n- We did a lot more renaming to bring coherency and consistency to the code base.\\n  See [[pull-3126]], [[pull-3120]], [[pull-3118]], and [[pull-3116]].\\n- We have added a few things to the ledger repository to make it conform to the\\n  [Cardano Engineering Handbook](https://input-output-hk.github.io/cardano-engineering-handbook/)\\n  See [[pull-3139]].\\n\\n\\n[pull-3138]: https://github.com/input-output-hk/cardano-ledger/pull/3138\\n[pull-3127]: https://github.com/input-output-hk/cardano-ledger/pull/3127\\n[pull-3135]: https://github.com/input-output-hk/cardano-ledger/pull/3135\\n[pull-3126]: https://github.com/input-output-hk/cardano-ledger/pull/3126\\n[pull-3120]: https://github.com/input-output-hk/cardano-ledger/pull/3120\\n[pull-3118]: https://github.com/input-output-hk/cardano-ledger/pull/3118\\n[pull-3116]: https://github.com/input-output-hk/cardano-ledger/pull/3116\\n[pull-3139]: https://github.com/input-output-hk/cardano-ledger/pull/3139\\n[pull-372]: https://github.com/cardano-foundation/CIPs/pull/372"},{"id":"2022-11-11-network","metadata":{"permalink":"/cardano-updates/2022-11-11-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-11-network.md","source":"@site/blog/2022-11-11-network.md","title":"Network Team Update","description":"High-level summary","date":"2022-11-11T00:00:00.000Z","formattedDate":"November 11, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":1.595,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-11-11-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-11-ledger"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-04-hydra"}},"content":"import NoticedHeaders from \'@site/static/images/network/2022-11-11-noticed-headers.png\';\\n\\n## High-level summary\\n\\nIn last sprint we got a performance report of P2P performance testing cluster\\n(which consists of 50 nodes).  There is a performance regression in the header\\nnotification metric.  The P2P cluster is constructed with the same\\ntopology as the non-p2p reference one this indicates some regression which\\nneeds to be further investigated.  This poses a risk for releasing P2P.\\n\\nWe also continued to work on peer sharing: [pull #4019].\\n\\nWe continued working on dynamic block production which is required for P2P\\nrelease for BP nodes: [pull #3159].\\n\\nWe simplified the P2P topology format: [issue #4559], [pull #3888].\\n\\nWe added a new trace point for asynchronous demotions of local peers with\\n`Warning` severity.  This trace is **important** for SPOs.\\n\\n## Detail description\\n\\n### Performance regression\\n\\nBelow we include a graph which shows the performance regression of the P2P code base vs non P2P.\\n\\n<img src={NoticedHeaders} />\\n\\nOn the `x` axis is time in seconds which measures the delay from the start of\\nthe slot to when a header was received. The `y` axis is the percentile of nodes\\nthat received a header.  We are currently investigating possible causes of the\\nregression. \\n\\n### New P2P topology form\\n\\nThe new topology file format is described in this [issue #4559].\\n\\n### Tracing improvements\\n\\n* We improved a handshake error reporting, [pull #4136]\\n* We added `TraceDemoteLocalAsynchronous` rendered as `DemoteLocalAsynchronous`\\n  in `json` format, [pull #4127].  Such demotions should be investigated by the\\n  pool operator.  They can indicate a problem in the deployed system, but also\\n  they could indicate a remote problem in arranged connections with other SPOs.\\n\\n### Open Source Improvements\\n\\nWe improved documentation of `io-sim` and `typed-protocols` for open-source\\ncontributors and/or maintenance tasks: [pull #22], [pull #45], [pull #48]. \\n\\n[pull #4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[pull #3888]: https://github.com/input-output-hk/ouroboros-network/issues/3888\\n[pull #3159]: https://github.com/input-output-hk/ouroboros-network/issues/3159\\n[issue #4559]: https://github.com/input-output-hk/cardano-node/issues/4559\\n[pull #4136]: https://github.com/input-output-hk/ouroboros-network/pull/4136\\n[pull #4127]: https://github.com/input-output-hk/ouroboros-network/pull/4127\\n[pull #22]: https://github.com/input-output-hk/typed-protocols/pull/22\\n[pull #45]: https://github.com/input-output-hk/io-sim/pull/45\\n[pull #48]: https://github.com/input-output-hk/io-sim/pull/48"},{"id":"2022-11-04-hydra","metadata":{"permalink":"/cardano-updates/2022-11-04-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-hydra.md","source":"@site/blog/2022-11-04-hydra.md","title":"Hydra Team Update","description":"High level summary","date":"2022-11-04T00:00:00.000Z","formattedDate":"November 4, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.935,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-11-04-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-11-11-network"},"nextItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-11-04-mithril"}},"content":"## High level summary\\n\\nThis week, the hydra team first re-deployed the latest Hydra scripts to the re-spun `preview` network, see [0.8.0 release notes](https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0). They also completed implementation of [ADR18](https://hydra.family/head-protocol/adr/18/) and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks & protocol parameter updates [#195](https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557) and alignment of the specification document with auditors.\\n\\n## What did the team achieve this week\\n\\n- Complete and merge ADR18 [#579](https://github.com/input-output-hk/hydra-poc/pull/579)\\n- Re-deploy hydra scripts to respun `preview` network, see [0.8.0 release notes](https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0) [#595](https://github.com/input-output-hk/hydra-poc/pull/595)\\n- Have first gap of [#452](https://github.com/input-output-hk/hydra-poc/pull/452) in review.\\n- Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.\\n- Engineering meeting to discuss hard forks and protocol parameter updates [#195](https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557)\\n- Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.\\n- Drafted project scope for an external audit RFP.\\n\\n## What are the goals of next week\\n\\n- Implement event-sourced persistence [#580](https://github.com/input-output-hk/hydra-poc/issues/580)\\n- Answer the internal auditor&rsquo;s questions\\n- Have a draft RFP ready for a first review internally\\n- Close some gaps [#452](https://github.com/input-output-hk/hydra-poc/pull/452)"},{"id":"2022-11-04-mithril","metadata":{"permalink":"/cardano-updates/2022-11-04-mithril","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-mithril.md","source":"@site/blog/2022-11-04-mithril.md","title":"Mithril Team Update","description":"This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we\'ve implemented an efficiency improvement on the size of the mithril certificates.","date":"2022-11-04T00:00:00.000Z","formattedDate":"November 4, 2022","tags":[{"label":"mithril","permalink":"/cardano-updates/tags/mithril"}],"readingTime":1.015,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Mithril Team Update","slug":"2022-11-04-mithril","authors":"iquerejeta","tags":["mithril"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-11-04-hydra"},"nextItem":{"title":"Open-Source Team","permalink":"/cardano-updates/2022-10-31-open-source"}},"content":"This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we\'ve implemented an efficiency improvement on the size of the mithril certificates.\\n# Low level overview\\n- We have been moving forward on the implementation of the release process [#500](https://github.com/input-output-hk/mithril/issues/500):\\n  - Setup of the new hosted environments for `testing-preview`, `pre-release-preview` and `release-preprod` with their terraform and GitHub environments [#542](https://github.com/input-output-hk/mithril/issues/542)\\n  - Adapted the CI workflows to work with the new release process [#543](https://github.com/input-output-hk/mithril/issues/543)\\n  - Publication of an [ADR3](https://mithril.network/doc/adr/3)\\n  - Publication of a [dev blog post](https://mithril.network/doc/dev-blog/2022/10/28/updated-environments) about Mithril networks evolution \\n  - Releasing our first Mithril distribution [2244.0](https://github.com/input-output-hk/mithril/releases/tag/2244.0)\\n- Worked on the API versioning mechanism [#565](https://github.com/input-output-hk/mithril/issues/565)\\n- Worked on the implementation of the stores migration process for the signer and aggregator nodes [#562](https://github.com/input-output-hk/mithril/issues/562)\\n- Prepared a Mithril `devnet` video demo [#526](https://github.com/input-output-hk/mithril/issues/526)\\n- Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably [#484](https://github.com/input-output-hk/mithril/pull/484)"},{"id":"2022-10-31-open-source","metadata":{"permalink":"/cardano-updates/2022-10-31-open-source","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-04-open-source.md","source":"@site/blog/2022-11-04-open-source.md","title":"Open-Source Team","description":"High Level Summary","date":"2022-11-04T00:00:00.000Z","formattedDate":"November 4, 2022","tags":[{"label":"open-source","permalink":"/cardano-updates/tags/open-source"}],"readingTime":1.465,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Open-Source Team","slug":"2022-10-31-open-source","authors":"coot","tags":["open-source"],"hide_table_of_contents":false},"prevItem":{"title":"Mithril Team Update","permalink":"/cardano-updates/2022-11-04-mithril"},"nextItem":{"title":"Embedding Quality Workstream","permalink":"/cardano-updates/2022-11-03-embedding-quality"}},"content":"## High Level Summary\\n\\n* We\'ve been working toward publishing _Cardano Backlog_, currently its in\\n  review by the IOG communication team.\\n* We identified a number of libraries which can be published.\\n* We setup and enhanced [cardano-updates][cardano-updates].\\n\\n## Detailed description\\n\\nI am glad to announce that I was given the role of open-source advocate for\\ncardano project.  In last few weeks we were making steps towards publishing our\\nbacklog.  It\'s currently under review by the communication team, although most\\nof the issues are already visible across various repositories.\\n\\nThe open-source initiatives have their own\\n[project](https://github.com/orgs/input-output-hk/projects/60).  It is set up\\nto help us track our major open-source activities.  Right now there are two\\nwork streams:\\n\\n* the work on [_Cardano Engineering Handbook_][ceh];\\n* libraries to be release on [Hackage][Hackage] or [crates.io][crates.io].\\n\\nWe identifies a number of libraries across all the teams which contribute to\\n_Cardano_ which we would like publish to publish, see the following\\n[link][publish-on-hackage].  Arnauld Bailly recently published\\n[`quickcheck-dynamic`](https://hackage.haskell.org/package/quickcheck-dynamic)\\nlibrary on Hackage.  The networking team is slowly progressing towards\\npublishing [io-sim][io-sim] and related packages, checkout the progress\\n[here](https://github.com/orgs/input-output-hk/projects/19/views/24).\\n\\nThanks to Arnaud Bailly our [Cardano Updates][cardano-updates] website has\\na new look & feel!  It\'s using [docusaurus.io][docusaurus].\\n\\n\\nChristian Taylor carried recently a detailed analysis of our open-source\\nrepositories.  He collected many interesting metrics, which allows us to see\\nwhere we need to improve as an open-source project to make the Cardano project\\nand many smaller related libraries which we maintain be more open and available\\nfor open-source contributors.\\n\\nThe graph below shows which documents the 55 most important Cardano\\nrepositories are missing the most:\\n![Documentation Adoption](../static/img/doc-adoption.png)\\nYou can expect we will improve in these metrics in the coming weeks.\\n\\n\\n[Hackage]: https://hackage.haskell.org/\\n[crates.io]: https://crates.io\\n[publish-on-hackage]: https://github.com/orgs/input-output-hk/projects/60/views/3\\n[io-sim]: https://github.com/input-output-hk/io-sim\\n[ceh]: https://input-output-hk.github.io/cardano-engineering-handbook/\\n[cardano-updates]: https://input-output-hk.github.io/cardano-updates\\n[docusaurus]: https://docusaurus.io"},{"id":"2022-11-03-embedding-quality","metadata":{"permalink":"/cardano-updates/2022-11-03-embedding-quality","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-03-embedding-quality.md","source":"@site/blog/2022-11-03-embedding-quality.md","title":"Embedding Quality Workstream","description":"High level summary","date":"2022-11-03T00:00:00.000Z","formattedDate":"November 3, 2022","tags":[{"label":"embedding-quality","permalink":"/cardano-updates/tags/embedding-quality"}],"readingTime":0.65,"hasTruncateMarker":false,"authors":[{"name":"Dorin Solomon","title":"System Test Team Lead","url":"https://github.com/dorin100","imageURL":"https://github.com/dorin100.png","key":"dorin100"}],"frontMatter":{"title":"Embedding Quality Workstream","slug":"2022-11-03-embedding-quality","authors":"dorin100","tags":["embedding-quality"],"hide_table_of_contents":false},"prevItem":{"title":"Open-Source Team","permalink":"/cardano-updates/2022-10-31-open-source"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-02-consensus"}},"content":"## High level summary\\n\\nWe made good progress on most of the Action Items we agreed on Lisbon, like:\\n* Cardano System Tests was fully open to public (tools, tests, results) \\n  See [cardano-node-tests webpage](https://input-output-hk.github.io/cardano-node-tests).\\n* We defined an [user-facing-functionality template](https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md) that is used with the cardano-cli team \\n  * this includes acceptance criteria & user stories, and definition of done\\n* We are in the process of running the cardano-node-tests at commit & PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)\\n* We started to apply a _labelling convention_ on [cardano-node issues](https://github.com/input-output-hk/cardano-node/issues) that will be used to generate some visual dashboards with some metrics [TBD]\\n* Ziyand Liu started an _End-to-End Development and Testing Process for Plutus Features_"},{"id":"2022-10-02-consensus","metadata":{"permalink":"/cardano-updates/2022-10-02-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-consensus.md","source":"@site/blog/2022-11-02-consensus.md","title":"Consensus Team Update","description":"High-level summary","date":"2022-11-02T00:00:00.000Z","formattedDate":"November 2, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":3.53,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-10-02-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Embedding Quality Workstream","permalink":"/cardano-updates/2022-11-03-embedding-quality"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-02-ledger"}},"content":"## High-level summary\\n\\nDuring the past two weeks, the consensus team continued its work on testing the\\nUTxO HD prototype. We completed the era-transition and backing store tests, and\\nthe mempool tests are advancing at a steady pace. Regarding our work in the\\nGenesis design, we continued our collaboration with the research and networking\\nteams, and we continue investigating strategies for making the chain-sync\\njumping prototype faster.\\n\\n## High-level status report\\n\\n- Finish the UTxO HD prototype: on track.\\n  - We worked on state-machine tests for the mempool, and spotted potential bugs\\n    in the implementation. Investigation is ongoing.\\n  - We have a set of property tests for the backing store. We still need to\\n    incorporate the improvements to the LMDB cursor API that these tests\\n    made possible.\\n  - We merged the era-transition tests PR.\\n- Genesis: on track.\\n  - Design work around Genesis continues in collaboration with researchers and\\n    the networking team.\\n  - We continued trying to improve the performance of the chain-sync jumping\\n    prototype. We gained additional insight on which parameters to tweak next.\\n    In spite of the baseline still being faster, the current prototype already\\n    achieves a significant speedup when compared to the naive approach of simply\\n    running full chain-sync with all peers.\\n- Tech debt: on track.\\n  - We clarified a common source of confusion around VRF tie-breaking and\\n    cross-era chain selection.\\n\\n## Workstreams\\n\\n### Finish the UTxO HD prototype\\n\\nWe continued working on property-tests for the UTxO HD prototype. In particular\\nwe merged the [era-transition tests\\nPR](https://github.com/input-output-hk/ouroboros-network/pull/4073).\\n\\n#### Backing store property tests\\n\\nThe [backing store property tests\\nPR](https://github.com/input-output-hk/ouroboros-network/pull/4081) has been\\nreviewed. The next steps are:\\n\\n- Improve error handling and command generation.\\n- Add coverage testing to check that we are not failing to cover interesting\\n  test cases.\\n\\nThe [monadic cursor API](https://github.com/input-output-hk/lmdb-simple/pull/1)\\nwent through its first review round. The API is in a relatively stable state.\\nThis PR also unifies the `cborg` and `serialise`-based interfaces to LMDB\\noperations. The next steps are:\\n\\n- Write\\n  [`quickcheck-dynamic`](https://hackage.haskell.org/package/quickcheck-dynamic)\\n  state-machine tests for this API.\\n- Adapt the changes in the serialisation interface in the backing store property\\n  tests. This will involve adding boilerplate code in consensus to make up for\\n  the removal of the `cborg`-based interface.\\n\\n## LSM tree implementation\\n\\nWe worked on the [LSM tree\\nprototype](https://github.com/input-output-hk/ouroboros-network/issues/4121). In\\nparticular, we focused on tuning the LSM tree design to the different workloads\\nthat consensus has (eg syncing, normal node operation, etc).\\n\\n### Benchmarking the CSJ prototype\\n\\nWork on improving the chain-sync jumping performance is ongoing. In particular\\nwe compared the performance of different jump intervals, which, somewhat\\nsurprisingly, do not make a significant difference. In particular, we are seeing\\nperiodic \\"plateaus\\" where the chain-sync tip does not progress, but they are\\nmuch longer for the prototype. Our hypothesis is that this seem to be due to a\\ncombination of the garbage collector (GC) pauses, and the actual time it takes\\nthe non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo\\nfragment.\\n\\nIn the coming weeks we will try to shorten these plateaus via a combination of\\ntweaking GC options and less synchronisation in the CSJ governor.\\n\\nThe following plot shows the performance of the chain-sync jumping prototype\\nusing different jumping intervals. It compares the syncing progress by plotting\\nthe slots of adopted blocks against time. The baseline is still faster, however\\nit is worth noting that the current prototype already achieves a significant\\nspeedup when compared to the naive approach of simply running full chain-sync\\nwith all peers.\\n\\n![](/images/consensus/2022-11-02-csj-vs-baseline.svg)\\n\\nThe second plot shows the syncing progress sliced to a chosen ~5min interval,\\nand includes, in addition to the slots of adopted blocks, the slots of the tip\\nof the ChainSync fragment. This allows us to see how far ahead of the selected\\ntip the CS dynamo is, i.e. how much room we have for BlockFetch not to get\\nstalled. It shows periodic behaviour (due to the forecasting limit), and shows\\nthat the CS fragment tip is not progressing for significant periods\\n(\\"plateaus\\").\\n\\n![](/images/consensus/2022-11-02-csj-vs-baseline-sliced.svg)\\n\\n## Technical debt\\n\\nWe [clarified](https://github.com/input-output-hk/ouroboros-network/pull/4098) a\\ncommon source of confusion around VRF tie-breaking and cross-era chain\\nselection. This PR involved correcting potentially misleading names of\\nVRF-related functions, and providing context for a particular VRF value is\\nused for tie-breaking."},{"id":"2022-11-02-ledger","metadata":{"permalink":"/cardano-updates/2022-11-02-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-ledger.md","source":"@site/blog/2022-11-02-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2022-11-02T00:00:00.000Z","formattedDate":"November 2, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.275,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-11-02-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-02-consensus"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-02-node-cli-api"}},"content":"## High level summary\\nWe have made the decision to use the\\n[formal ledger repository](https://github.com/input-output-hk/formal-ledger-specifications)\\nin place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure\\nto the model. In particular, we now have a lot of support for axiomatic set theory.\\nWhile the next ledger era is still in the design phase, most of the team remains working\\non technical debt.\\nIn particular, we have moved a lot more code out of the Shelley specific modules and into\\na ledger core module, we have finished up our benchmarking around the problematic `TICKF`\\nledger transition (while improving the performance), made conveniences to the development\\nenvironment, cleaned up all the recent changes to the cost model, added a lot of documentation,\\nfixed some flaky tests, and deleted some dead code.\\n\\n## Lower level summary\\n\\n### Axiomatic Set Theory\\n\\nThe formal ledger model now has support for much of the set theory that we make use of in\\nthe formal ledger specifications. See [[pull-20]].\\n\\n### Completed Technical Debt\\n\\n- We have addressed issues with two of our most problematic and flaky tests.\\n  See [[pull-3039]] and [[pull-3093]].\\n- We have added more documentation and tests to the Twiddler module. This is a module which\\n  makes our CBOR serialization round-trip tests much more robust, and will also hopefully\\n  help enforce the mandate for downstream libraries to never re-serialize data that needs\\n  to be hashed. See [[pull-3073]] and [[pull-3095]]\\n  (we cannot merge 3095 just yet, due to a preference for merging other features).\\n- We have finished our long analysis of the problematic `TICKF` transition.\\n  We now have a lot of benchmarks surrounding this code, and have added performance improvements.\\n  See [[pull-3068]] and [[issue-3035]].\\n- We have restored support for\\n  [ghcid](https://hackage.haskell.org/package/ghcid)\\n  in our repository. This is a tool for developing with Haskell that many of us find greatly\\n  improves our productivity by providing us with constant feedback from the type checker.\\n  See [[pull-3112]].\\n- After much activity on the cost model, we have done some final clean up of the code.\\n  See [[pull-3075]] and [[pull-3101]].\\n- We moved a lot of the existing user facing documentation regarding native tokens into the\\n  ledger repository, and cleaned it up\\n  (most of the heavy lifting was done by our amazing technical writers).\\n  See [[pull-3091]].\\n- We removed dead code. See [[pull-3089]].\\n- We moved a lot of code from the Shelley specific libraries to the ledger core library.\\n  See [[pull-3109]] and [[pull-3110]].\\n- We\'ve removed more of the awkward legacy template Haskell names.\\n  See [[pull-3108]].\\n\\n[issue-3035]: https://github.com/input-output-hk/cardano-ledger/issues/3035\\n\\n[pull-20]: https://github.com/input-output-hk/formal-ledger-specifications/pull/20\\n[pull-3039]: https://github.com/input-output-hk/cardano-ledger/pull/3039\\n[pull-3093]: https://github.com/input-output-hk/cardano-ledger/pull/3093\\n[pull-3073]: https://github.com/input-output-hk/cardano-ledger/pull/3073\\n[pull-3095]: https://github.com/input-output-hk/cardano-ledger/pull/3095\\n[pull-3068]: https://github.com/input-output-hk/cardano-ledger/pull/3068\\n[pull-3112]: https://github.com/input-output-hk/cardano-ledger/pull/3112\\n[pull-3075]: https://github.com/input-output-hk/cardano-ledger/pull/3075\\n[pull-3101]: https://github.com/input-output-hk/cardano-ledger/pull/3101\\n[pull-3091]: https://github.com/input-output-hk/cardano-ledger/pull/3091\\n[pull-3089]: https://github.com/input-output-hk/cardano-ledger/pull/3089\\n[pull-3109]: https://github.com/input-output-hk/cardano-ledger/pull/3109\\n[pull-3110]: https://github.com/input-output-hk/cardano-ledger/pull/3110\\n[pull-3108]: https://github.com/input-output-hk/cardano-ledger/pull/3108"},{"id":"2022-11-02-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-11-02-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-node-cli-api.md","source":"@site/blog/2022-11-02-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-11-02T00:00:00.000Z","formattedDate":"November 2, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.265,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-11-02-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-11-02-ledger"},"nextItem":{"title":"Node Release Team Update","permalink":"/cardano-updates/2022-11-02-release"}},"content":"# 2022-11-02 - 2022-11-15\\n\\n## High level summary\\n- Documentation improvments\\n- Merged community contributions\\n- Exposing types from cardano-api requested by the community/other teamss\\n- Test output has been improved so diagnosing failures is now easier\\n- Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)\\n- Refactoring of cardano-testnet making it more useable as a library (ongoing)\\n- Release 1.35.4 was merged & released\\n\\n## Completed\\n\\n### cardano-cli\\n- [Community contributions - doc fixes and spelling errors](https://github.com/input-output-hk/cardano-node/pull/4567)\\n\\n### cardano-api\\n- [Reduce exposed modules in cardano-api](https://github.com/input-output-hk/cardano-node/pull/4546)\\n- [Add Ord instance for AddressInEra](https://github.com/input-output-hk/cardano-node/pull/4587)\\n- [Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4496)\\n- [Expose TextEnvelopeCddl from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4635)\\n- [Expose txScriptValidityToScriptValidity in Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4628)\\n- [export RawBytesHexError](https://github.com/input-output-hk/cardano-node/pull/4599)\\n\\n### cardano-node\\n- [Add Plutus minting script doc](https://github.com/input-output-hk/cardano-node/pull/2883)\\n- [Improve test output](https://github.com/input-output-hk/cardano-node/pull/4575/files)\\n- [Enable stale bot](https://github.com/input-output-hk/cardano-node/pull/4586)\\n- [Add link to troubleshooting page in the wiki](https://github.com/input-output-hk/cardano-node/pull/4557)\\n- [Use environment files in Github Actions](https://github.com/input-output-hk/cardano-node/pull/4550)\\n\\n\\n### cardano-testnet\\n- [Add single entrypoint for starting testnets](https://github.com/input-output-hk/cardano-node/pull/4544)\\n- [Improve cardano-testnet test output](https://github.com/input-output-hk/cardano-node/pull/4575)\\n- [Reorder module hierarchy](https://github.com/input-output-hk/cardano-node/pull/4595)\\n\\n## In Progress\\n\\n### cardano-cli\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Optimise query stake snapshot command](https://github.com/input-output-hk/cardano-node/pull/4179)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)"},{"id":"2022-11-02-release","metadata":{"permalink":"/cardano-updates/2022-11-02-release","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-release.md","source":"@site/blog/2022-11-02-release.md","title":"Node Release Team Update","description":"Node Reelease Update","date":"2022-11-02T00:00:00.000Z","formattedDate":"November 2, 2022","tags":[{"label":"release","permalink":"/cardano-updates/tags/release"}],"readingTime":0.445,"hasTruncateMarker":false,"authors":[{"name":"Samuel Leathers","title":"Service Reliability Manager","url":"https://github.com/disassembler","imageURL":"https://github.com/disassembler.png","key":"disassembler"}],"frontMatter":{"title":"Node Release Team Update","slug":"2022-11-02-release","authors":"disassembler","tags":["release"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-11-02-node-cli-api"},"nextItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2022-11-02-system-test"}},"content":"## Node Reelease Update\\n## 2022-10-19 - 2022-11-02\\n\\n### Executive Summary\\nThe team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,\\na temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.\\n\\n1.35.4 release candidates have been created and are being tested internally and externally.\\n\\n### Completed\\n\\n- [1.35.4-rc1 tag](https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1)\\n- [1.35.4-rc2 tag (config changes only for preview)](https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1)\\n- [CHaP Migration] (https://github.com/input-output-hk/cardano-node/pull/4540)\\n\\n### In Progress\\n\\n- [Release 1.35.4](https://github.com/input-output-hk/cardano-node/commits/release/1.35)\\n\\n  * [Test Status](https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst)\\n\\n- [Cicero CI Migration](https://input-output-hk.github.io/cardano-updates/2022-08-12-sre)"},{"id":"2022-11-02-system-test","metadata":{"permalink":"/cardano-updates/2022-11-02-system-test","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-02-system-test.md","source":"@site/blog/2022-11-02-system-test.md","title":"System Test Team Update","description":"High level summary","date":"2022-11-02T00:00:00.000Z","formattedDate":"November 2, 2022","tags":[{"label":"system-test","permalink":"/cardano-updates/tags/system-test"}],"readingTime":0.4,"hasTruncateMarker":false,"authors":[{"name":"Dorin Solomon","title":"System Test Team Lead","url":"https://github.com/dorin100","imageURL":"https://github.com/dorin100.png","key":"dorin100"}],"frontMatter":{"title":"System Test Team Update","slug":"2022-11-02-system-test","authors":"dorin100","tags":["system-test"],"hide_table_of_contents":false},"prevItem":{"title":"Node Release Team Update","permalink":"/cardano-updates/2022-11-02-release"},"nextItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-11-01-db-sync"}},"content":"## High level summary\\n\\nWe have been focused on:\\n* Fully opening our test results (on top of the existing tests & tools):  \\n  See [cardano-node-tests webpage](https://input-output-hk.github.io/cardano-node-tests/).\\n* Started to test and automate the new functionalities added in the `1.35.4-rc1` node tag  \\n  See [test results tracking page](https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst).\\n* Made some improvements to the automated db-sync sync tests  \\n  See [db-sync tests](https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests).\\n* Multiple cleanups and updates to the cardano-node-tests framework\\n* Updated the nightly pipelines for the cardano-node-tests after the Babbage HF"},{"id":"2022-11-01-db-sync","metadata":{"permalink":"/cardano-updates/2022-11-01-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-11-01-db-sync.md","source":"@site/blog/2022-11-01-db-sync.md","title":"DB Sync Team Update","description":"High level summary","date":"2022-11-01T00:00:00.000Z","formattedDate":"November 1, 2022","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":0.86,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB Sync Team Update","slug":"2022-11-01-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"System Test Team Update","permalink":"/cardano-updates/2022-11-02-system-test"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-28-hydra"}},"content":"## High level summary\\n\\nThe DBSync team is preparing a release which introduces schema simplifications, removes indexes,\\nunique and foreign keys. It also provides a way to fix older values and migrates without the need to\\nresync from genesis.\\n\\n## Lower level summary\\n\\n### Schema simplifications\\n\\nIndexes, Unique and Foreign keys are removed in order to speedup syncing\\n[#1295](https://github.com/input-output-hk/cardano-db-sync/pull/1295)\\nThe same pr also introduces a different way to rollback, which doesn\'t rely on foreign keys and\\nindexes.\\n\\n### Performance\\n\\nThe DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A\\nconservative number of these will be included in the next release and the rest can be found in\\n[performance view](https://github.com/orgs/input-output-hk/projects/52/views/7).\\n\\n### Migrations and resyncing\\n\\nThe next release will be 13.1.0, it will enable a migration without the need to resync. It will also\\nintroduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases\\n[#1294](https://github.com/input-output-hk/cardano-db-sync/pull/1294)\\n\\n### Release\\n\\nThe release has been mostly cherry-picked from master\\n[#1294](https://github.com/input-output-hk/cardano-db-sync/pull/1294) and its scope can be seen\\n[release view](https://github.com/orgs/input-output-hk/projects/52/views/6)"},{"id":"2022-10-28-hydra","metadata":{"permalink":"/cardano-updates/2022-10-28-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-hydra.md","source":"@site/blog/2022-10-28-hydra.md","title":"Hydra Team Update","description":"High level summary","date":"2022-10-28T00:00:00.000Z","formattedDate":"October 28, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.795,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-10-28-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-11-01-db-sync"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-10-28-network"}},"content":"## High level summary\\n\\nThis week, the hydra team completed several user experience improvements to the\\n`hydra-tui` and `hydra-node`, and delivered a first version of persisted head\\nstates by publishing release version\\n[`0.8.0`](https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0).\\nBesides this, they met with researchers on topic of the HeadV1 specification and\\nkicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.\\n\\n## What did the team achieve this week\\n\\n- Completed the UX improvements on the `hydra-tui`\\n- Released version [`0.8.0`](https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0), which delivers a first version of persisted head states\\n- Met with researchers on the HeadV1 specification\\n- Started work on the RFP for our external audit\\n\\n## What are the goals of next week\\n\\n- Complete ADR18 implementation and get it merged\\n- Start work on event-sourced persistence [#580](https://github.com/input-output-hk/hydra-poc/issues/580)\\n- Have a first plutus script gap closed [#452](https://github.com/input-output-hk/hydra-poc/issues/452)\\n- Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)"},{"id":"2022-10-28-network","metadata":{"permalink":"/cardano-updates/2022-10-28-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-network.md","source":"@site/blog/2022-10-28-network.md","title":"Network Team Update","description":"High-level summary","date":"2022-10-28T00:00:00.000Z","formattedDate":"October 28, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.665,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-10-28-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-28-hydra"},"nextItem":{"title":"Performance & Tracing Team Update","permalink":"/cardano-updates/2022-10-28-performance-and-tracing"}},"content":"## High-level summary\\n\\nThe team has focused on debuging & fixing bugs for the **P2P single relay release**, which included\\n\\n* diagnosing, fixing and writing tests for a bug in `peer-state-actions` which\\n  fortunately hasn\'t been released;\\n* diagnosing & preventing misconfiguration of DNS\\n\\nWe also focused on developing **peer sharing**.  We also held a session with\\nthe scientists on eclipse evasion.\\n\\n## Detailed description\\n\\n### P2P Network Stack\\n\\nDuring the past two weeks the team focused on p2p single relay release and peer\\nsharing.  We found and fixed an important bug recently introduced in one of the\\ncomponents of p2p networking stack (fortunately never released).  Together with\\na fix, we designed a unit test diffusion simulation as well as quickcheck\\nproperty test (both could reproduce it). We also changed the code in a way that\\nif such a bug is reintroduced in the future, it will be obvious to diagnose.\\nFor more see:\\n\\n* [ouroboros-network#4067](https://github.com/input-output-hk/ouroboros-network/pull/4067)\\n* [ouroboros-network#4086](https://github.com/input-output-hk/ouroboros-network/pull/4086)\\n\\nInitial benchmarking run of the P2P code was executed.  The results where\\nunlike what we see on the mainnet.  We found a possible misconfiguration of the\\ncluster (caused by 0 TTL on domain names), which could be the direct cause of\\nit.  We wrote a PR which rules out such misconfiguration.  We are awaiting on\\nthe next benchmarking results.  See more at:\\n\\n[ouroboros-network#4106](https://github.com/input-output-hk/ouroboros-network/pull/4106)\\n\\nWe also started working on P2P single relay release.  The PR\\n[ouroboros-network#4120](https://github.com/input-output-hk/ouroboros-network/pull/4120)\\nincludes _108_ patches cherry-picked from the `master` branch.  We started\\nworking toward integration these changes against the release branch of\\n`cardano-node`.  Early next week we ought to be able to have an early version\\nof `cardano-node` with _non experimental P2P support_!\\n\\nFor more detailed release plan please see [P2P - Single\\nRelay](https://github.com/input-output-hk/ouroboros-network/issues/3888)\\nissue.\\n\\n### Consensus\\n\\nWe identified and fixed missing error reporting in consensus\\ninitialisation phase.  See more at\\n[ouroboros-network#4015](https://github.com/input-output-hk/ouroboros-network/pull/4015)\\n\\n### Cardano Node\\n\\nWe also made changes in `cardano-node` in order to give better experience for\\nnode operators.  This includes updating severities of some of the traces as\\nwell as implementing new format of the p2p topology file.  For more see:\\n\\n* [cardano-node#4563](https://github.com/input-output-hk/cardano-node/pull/4563).\\n* [cardano-node#4561](https://github.com/input-output-hk/cardano-node/pull/4561)\\n\\n### Peer Sharing\\n\\nWe continued working on implementation of peer sharing.  We have an early\\nimplementation which will be reviewed and analysed in next weeks.  We started\\nworking on `cardano-node` integration.  We need\\n[PR #4392](https://github.com/input-output-hk/cardano-node/pull/4392) to be merged\\nbefore such integration will be able to land in `cardano-node`, although this\\nis _not blocking_ us currently.  See more at:\\n\\n* [ouroboros-network#4019](https://github.com/input-output-hk/ouroboros-network/pull/4019)\\n\\n### Eclipse Evasion\\n\\nWe held a session which included Alexander Russel, Sandro Coretti-Drayton and\\nNick Frisby from the consensus team.  We discussed high lever design of the\\neclipse evasion scheme, which is important for the design and implementation of\\n`ouroboros-genesis`.  We got a positive feedback from the researchers.\\n\\n### IO-Sim\\n\\nIn this period we made little progress towards releasing `IO-Sim` on Hackage.\\nA single [PR](https://github.com/input-output-hk/io-sim/pull/32) which added\\na few missing instances of the `STM` monad.\\n\\n### Open Source\\n\\nWe made sure the CI runs for PRs which comes from forks (which is important to\\naccept contributions from 3rd parties).\\n\\n### Mithril Cardano Integration\\n\\nWe held initial discussions with Arnaud Bailly about possible path to integrate\\nmithril to `cardano-node` and take advantage of the `ouroboros-network`\\ndiffusion layer."},{"id":"2022-10-28-performance-and-tracing","metadata":{"permalink":"/cardano-updates/2022-10-28-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-performance-and-tracing.md","source":"@site/blog/2022-10-28-performance-and-tracing.md","title":"Performance & Tracing Team Update","description":"High level summary","date":"2022-10-28T00:00:00.000Z","formattedDate":"October 28, 2022","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/tags/performance-tracing"}],"readingTime":1.155,"hasTruncateMarker":false,"authors":[{"name":"Serge Kosyrev","title":"Performance and Tracing Team Lead","url":"https://github.com/deepfire","imageURL":"https://github.com/deepfire.png","key":"deepfire"}],"frontMatter":{"title":"Performance & Tracing Team Update","slug":"2022-10-28-performance-and-tracing","authors":"deepfire","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-10-28-network"},"nextItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2022-08-12-sre"}},"content":"## High level summary\\n\\nOn the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.\\n\\nOn the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.\\n\\n## Executive summary\\n\\n- The new tracing system public release is getting closer, as we\'re resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.\\n- The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.\\n- The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE."},{"id":"2022-08-12-sre","metadata":{"permalink":"/cardano-updates/2022-08-12-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-28-sre.md","source":"@site/blog/2022-10-28-sre.md","title":"SRE Team Update","description":"High level summary","date":"2022-10-28T00:00:00.000Z","formattedDate":"October 28, 2022","tags":[{"label":"sre","permalink":"/cardano-updates/tags/sre"}],"readingTime":3.04,"hasTruncateMarker":false,"authors":[{"name":"Michael Fellinger","title":"SRE Team Lead","url":"https://github.com/manveru","imageURL":"https://github.com/manveru.png","key":"manveru"}],"frontMatter":{"title":"SRE Team Update","slug":"2022-08-12-sre","authors":"manveru","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & Tracing Team Update","permalink":"/cardano-updates/2022-10-28-performance-and-tracing"},"nextItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-10-27-crypto"}},"content":"## High level summary\\n\\nThe SRE team is heavily working on the Equinix Metal migration, replacing Hydra\\nwith Cicero, and a new version of Spongix.\\n\\n## Lower level summary\\n\\n### OpenZiti\\n\\n- Work is ongoing on our OpenZiti integration into Bitte in [[bitte-zt]].\\n- CI-World deployment of Darwin CI Ziti service in [[ci-world-commit-d40f4d]].\\n- Multiple issues filed, and a lot of discussion with the OpenZiti developers,\\n  we\'re making pretty rapid progress thanks to them.\\n- Work on getting Equinix baremetal machines integrated into AWS World Bitte\\n  clusters utilizing a Ziti ZTNA network overlay to bridge the networking of\\n  the two environments and get IAM extension to Equinix machine for Nomad\\n  client onboarding.\\n- A Nix Flake for most of our OpenZiti dependencies including the Console,\\n  Controller, Edge Tunnel, and Router is now at [[openziti-bins]].\\n- The Flake also includes a WiP NixOS modules for these components.\\n- Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with\\n  no issues seen so far\\n- Moved the console to traefik routing service (`zac.$DOMAIN`) and\\n  controller/edge router stay at `zt.$DOMAIN`, but have registered consul\\n  services\\n\\n### Cicero & Tullia Integrations\\n\\n- Added webhook for [[haskell.nix]].\\n- Finished Cicero CI action for [[cardano-addresses-pull-205]].\\n- Fixed cardano-prelude cicero action in [[cardano-prelude-pull-176]].\\n- Fixed the `abcird-stdlib/publish` action [[abcirdc-pull-104]]\\n- fix error on vm-bigdisk flake configs [[cicero-pull-66]].\\n- Helped with Cicero actions and answered questions for [[plutus]]\\n  [[cardano-prelude]], and [[abcirdc]].\\n- Merged [[cardano-base-pull-323]] for Tullia on cardano-base.\\n- Merged Cicero action in [[cardano-ogmios-pull-5]].\\n- Opened [[cardano-explorer-app-pull-427]] to add Tullia and Cicero.\\n- Opened [[cardano-ledger-pull-3097]] to add Cicero CI action.\\n- Opened [[cardano-node-pull-4489]] to add Tullia and Cicero, including\\n  OS-agnostic jobs.\\n- Opened [[ouroboros-network-pull-4108]] to add Cicero action.\\n- Reviewed [[plutus-pull-4918]] and helped test it.\\n- Update Tullia in [[abcirdc-pull-97]] to build if a tag is given.\\n\\n### Cicero & Tullia Features\\n\\n- Improvements to Tullia task aggregation to make [[cardano-addresses]] build\\n  correctly.\\n- Better tullia CUE lib default for tags [[tullia-commit-4df3c5d]].\\n- Put `cache.nixos.org` back in `cache.iog.io`\'s upstreams. This is now\\n  considered a public cache again, and without it some Cicero evaluations had\\n  to build huge packages.\\n- Started working on a flake-parts module for Tullia.\\n- Started working on cutting down Tullia task build time by putting facts in\\n  JSON files.\\n- Fixed running into kernel arg limit by reading tullia\'s DAG from a file\\n- Merged [[tullia-pull-9]] that fixes several issues related to error reporting.\\n  and escaping.\\n- Added Mac builders in Cicero on CI-World.\\n- Started work on Tullia invocation caching.\\n\\n### Spongix\\n\\n- A lot of progress on an SQlite backed version of Spongix, it already supports\\n  the full HTTP binary cache protocol but still lacks comprehensive testing and\\n  some tuning, as well as recursive lookups.\\n- First steps in the implementation of the `nix-daemon` `ssh-ng` protocol so\\n  Spongix can be used via SSH and we can get rid of basic auth.\\n\\n### Bugs\\n\\n- Discovered Cicero bug where Nomad reschedules cause the Github commit status\\n  to get stuck in `pending`\\n- Discovered Cicero race condition bug around concurrent transactions for\\n  codependent actions.\\n- Fixed tullia task order bug in [[cardano-addresses]]\\n- Diagnose Cicero action not triggered in [[abcirdc]]\\n- Fixed meta/description of the Tullia package in [[tullia-pull-7]]\\n- Add Vault token loop alerts in [[bitte-cells-pull-40]]\\n- Ongoing investigation on recurring Patroni and nomad-follower issues related\\n  to token rotation.\\n\\n[abcirdc]: https://github.com/input-output-hk/abcirdc\\n[abcirdc-pull-104]: https://github.com/input-output-hk/abcirdc/pull/104\\n[abcirdc-pull-97]: https://github.com/input-output-hk/abcirdc/pull/97\\n[bitte-cells-pull-40]: https://github.com/input-output-hk/bitte-cells/pull/40\\n[bitte-zt]: https://github.com/input-output-hk/bitte/compare/zt\\n[cardano-addresses]: https://github.com/input-output-hk/cardano-addresses\\n[cardano-addresses-pull-205]: https://github.com/input-output-hk/cardano-addresses/pull/205\\n[cardano-base-pull-323]: https://github.com/input-output-hk/cardano-base/pull/323\\n[cardano-explorer-app-pull-427]: https://github.com/input-output-hk/cardano-explorer-app/pull/427\\n[cardano-ledger-pull-3097]: https://github.com/input-output-hk/cardano-ledger/pull/3097\\n[cardano-node-pull-4489]: https://github.com/input-output-hk/cardano-node/pull/4489\\n[cardano-ogmios-pull-5]: https://github.com/input-output-hk/cardano-ogmios/pull/5\\n[cardano-prelude]: https://github.com/input-output-hk/cardano-prelude\\n[cardano-prelude-pull-176]: https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946\\n[cicero-pull-66]: https://github.com/input-output-hk/cicero/pull/66\\n[ci-world-commit-d40f4d]: https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994\\n[haskell.nix]: https://github.com/input-output-hk/haskell.nix\\n[openziti-bins]: https://github.com/johnalotoski/openziti-bins\\n[ouroboros-network-pull-4108]: https://github.com/input-output-hk/ouroboros-network/pull/4108\\n[plutus]: https://github.com/input-output-hk/plutus\\n[plutus-pull-4918]: https://github.com/input-output-hk/plutus/pull/4918\\n[tullia-commit-4df3c5d]: https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245\\n[tullia-pull-7]: https://github.com/input-output-hk/tullia/pull/7\\n[tullia-pull-9]: https://github.com/input-output-hk/tullia/pull/9"},{"id":"2022-10-27-crypto","metadata":{"permalink":"/cardano-updates/2022-10-27-crypto","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-27-crypto.md","source":"@site/blog/2022-10-27-crypto.md","title":"Crypto Team Update","description":"High level overview","date":"2022-10-27T00:00:00.000Z","formattedDate":"October 27, 2022","tags":[{"label":"crypto","permalink":"/cardano-updates/tags/crypto"}],"readingTime":1.095,"hasTruncateMarker":false,"authors":[{"name":"I\xf1igo Querejeta Azurmendi","title":"Cardano Lead Cryptography Engineer","url":"https://github.com/iquerejeta","imageURL":"https://github.com/iquerejeta.png","key":"iquerejeta"}],"frontMatter":{"title":"Crypto Team Update","slug":"2022-10-27-crypto","authors":"iquerejeta","tags":["crypto"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Team Update","permalink":"/cardano-updates/2022-08-12-sre"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-21-hydra"}},"content":"## High level overview\\n\\nThe crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to\\nmeeting the [acceptance criteria](https://github.com/input-output-hk/cardano-base/issues/315) in cardano-base,\\nwhich lacks some editorial comments on the style of dQuandrant\'s PR, the inclusion of one additional test, and\\nwe are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,\\nbut also progressing on the implementation.\\n\\n## Low level overview\\n### SECP built-ins\\n* (missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in [PR 313](https://github.com/input-output-hk/cardano-base/pull/313)\\n* CIP-0049 was addressed in the editors meeting, and [PR 250](https://github.com/cardano-foundation/CIPs/pull/250) was merged\\n* The unit-tests [PR 320](https://github.com/input-output-hk/cardano-base/pull/320) is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.\\n\\n### KES agent\\n* We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.\\n* We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s)."},{"id":"2022-10-21-hydra","metadata":{"permalink":"/cardano-updates/2022-10-21-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-21-hydra.md","source":"@site/blog/2022-10-21-hydra.md","title":"Hydra Team Update","description":"High level summary","date":"2022-10-21T00:00:00.000Z","formattedDate":"October 21, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":0.97,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-10-21-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Crypto Team Update","permalink":"/cardano-updates/2022-10-27-crypto"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-10-19-node-cli-api"}},"content":"## High level summary\\n\\nThis week, the hydra team reviewed and addressed several open comments on the\\nnew HeadV1 specification, completing a list the of identified gaps between\\nspecification and implementation while doing so. In the wake of the recent\\ndemonstration of SundaeSwap running their DEX in a Hydra Head, they met with\\nthem to capture feature ideas & incorporate their feedback on the roadmap, as\\nwell as potential research avenues.\\n\\n### What did the team achieve this week\\n\\n- Had the monthly review meeting, a bit earlier than expected: <https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022>\\n- Reviewed and addressed several open comments on HeadV1 specification.\\n- Completed the list of identified gaps between specification and implementation [#452](https://github.com/input-output-hk/hydra-poc/issues/452)\\n- Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).\\n- Some small fixes on TUI and our docker images. [#538](https://github.com/input-output-hk/hydra-poc/issues/538) [#562](https://github.com/input-output-hk/hydra-poc/pull/562)\\n- Met with the internal audit team and clarified scope.\\n\\n### What are the goals of next week\\n\\n- Complete the last two items required for a version `0.8.0`.\\n- Cut the next release, version `0.8.0`\\n- Get backup/recovery [#187](https://github.com/input-output-hk/hydra-poc/issues/187) done with proper event sourcing (ADR18)\\n- Have the CI build macos artifacts"},{"id":"2022-10-19-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-10-19-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-19-node-cli-api.md","source":"@site/blog/2022-10-19-node-cli-api.md","title":"Node API & CLI Team Update","description":"High level summary","date":"2022-10-19T00:00:00.000Z","formattedDate":"October 19, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":1.57,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-10-19-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-21-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-18-consensus"}},"content":"# 2022-10-19 - 2022-11-01\\n\\n## High level summary\\n\\nThis sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node\'s mempool for the following information:\\n- Ask the node about the current mempool\'s capacity and sizes\\n- Request the next transaction from the mempool\'s current list\\n- Query if a particular transaction exists in the mempool\\n\\nOutside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric `tx_submit_fail_count` has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:\\n- Documentation improvments\\n- Release 1.35.4 was merged & released\\n- Exported various types from cardano-api that were requested by community members\\n\\n## Completed\\n\\n- [Release 1.35.4](https://github.com/input-output-hk/cardano-node/pull/4508)\\n\\n### cardano-cli\\n- [Add tx-mempool command to CLI](https://github.com/input-output-hk/cardano-node/pull/4276)\\n- [BUGFIX] - [Fix query era mismatch bug in transaction build command](https://github.com/input-output-hk/cardano-node/pull/4538)\\n- [Serenity] - [Condense Read and Validation modules in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4516)\\n\\n### cardano-api\\n- [Return Lovelace for calculateMinimumUTxO](https://github.com/input-output-hk/cardano-node/pull/4482)\\n- [Export IsPlutusScriptLanguage from cardano-api](https://github.com/input-output-hk/cardano-node/pull/4554)\\n- [Reduce exposed modules in cardano-api](https://github.com/input-output-hk/cardano-node/pull/4546)\\n- [Add ToJSON and FromJSON instances for Address](https://github.com/input-output-hk/cardano-node/pull/4568)\\n- [Export TxIns type alias from Cardano.Api](https://github.com/input-output-hk/cardano-node/pull/4565)\\n- [Export more generators from cardano-api](https://github.com/input-output-hk/cardano-node/pull/4534)\\n\\n### cardano-submit-api\\n- [Add tx_submit_fail_count metric](https://github.com/input-output-hk/cardano-node/pull/4566)\\n\\n### cardano-node\\n- [Upgrade to cabal-3.8.1.0](https://github.com/input-output-hk/cardano-node/pull/4549)\\n- [Update building-the-node-using-nix.md](https://github.com/input-output-hk/cardano-node/pull/4613)\\n\\n### cardano-testnet\\n- None\\n\\n## In Progress\\n\\n### cardano-cli\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Multiple pools support in query stake snapshot](https://github.com/input-output-hk/cardano-node/pull/4279)\\n- [Optimise query leadership schedule command](https://github.com/input-output-hk/cardano-node/pull/4250)\\n- [Optimise query stake snapshot command](https://github.com/input-output-hk/cardano-node/pull/4179)\\n- [Debug output for transaction submit](https://github.com/input-output-hk/cardano-node/pull/3819)\\n\\n### cardano-api\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n\\n### cardano-node\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)"},{"id":"2022-10-18-consensus","metadata":{"permalink":"/cardano-updates/2022-10-18-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-18-consensus.md","source":"@site/blog/2022-10-18-consensus.md","title":"Consensus Team Update","description":"High-level summary","date":"2022-10-18T00:00:00.000Z","formattedDate":"October 18, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":3.225,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-10-18-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-10-19-node-cli-api"},"nextItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-14-hydra"}},"content":"## High-level summary\\n\\nDuring the past two weeks, the consensus team worked on adding property test for\\ndifferent aspects of the UTxO HD prototype: era transitions, mempool, and\\nbacking store. Thanks to these tests we were able to uncover a bug in the\\nprototype. On the Genesis front, we benchmarked a different version of the\\nChainSync jumping prototype to try to improve its performance, but this did not\\nresult in any noticeable speedup.\\n\\n## High-level status report\\n\\n- Finish the UTxO HD prototype: on track.\\n  - We focused on increasing test coverage for the UTxO-HD prototype:\\n    - We started implementing Cadano-eras transition property-tests.\\n    - We started implementing state-machine property-tests for the mempool.\\n    - We merged the mempool rewrite.\\n    - We started working on state-machine tests for the backing store. This\\n      uncovered a bug in the range-read implementation of the LMDB backing\\n      store.\\n- Genesis: on track.\\n  - We benchmarked a version of the Genesis ChainSync Jumping prototype that\\n    spreads out the ChainSync updates over a longer period of time. This did not\\n    result in any noticeable speedup.\\n  - We investigated the overhead introduced by non-ChainSync components, but no\\n    conclusions could be drawn from the benchmarks we ran.\\n\\n## Workstreams\\n\\n### Finish the UTxO HD prototype\\n\\nWe focused on increasing test coverage for the UTxO HD prototype. We also merged\\nthe [mempool\\nrewrite](https://github.com/input-output-hk/ouroboros-network/pull/4049).\\n\\n#### Era transition property tests\\n\\nWe started implementing [Cardano era transition property\\ntests](https://github.com/input-output-hk/ouroboros-network/issues/4043),\\nwhich are needed for making sure that the ledger tables get updated in the\\nright way when we move from one era to the next. There are at the moment two\\nimportant transitions.\\n- Byron to Shelley: where all the UTxO is transferred from in-memory Byron\\n  state (which has no tables) to the ledger tables of the Shelley state.\\n- Shelley to Allegra: where the AVVM addresses must be deleted.\\n\\nWe have tests for the Byron to Shelley transitions. We are working on adding\\nthe remaining ones.\\n\\n#### Mempool state-machine tests\\n\\nWe started implementing [state-machine property tests for the\\nmempool](https://github.com/input-output-hk/ouroboros-network/issues/4044).\\nThe mempool is currently tested via pure property tests, and use a ledger\\nstate without tables. With the introduction of UTxO HD, testing the concurrent\\nbehavior of the mempool became of crucial importance (eg now we have to\\nacquire locks to flush the backing store). In addition, we need to test a\\nledger state with tables. These needs led to the creation of a new set of\\nproperty tests. In particular we aim to run parallel state-machine tests that\\nexercise the mempool in a way similar to how the node would make use of it.\\n\\n#### Backing store property tests\\n\\nWe started working on [state-machine tests for the backing\\nstore](https://github.com/input-output-hk/ouroboros-network/pull/4081) that UTxO\\nHD uses. The property tests uncovered errors in the range-reads implementation\\nof the LMDB backing store. To facilitate fixing this bug, we made\\n[changes](https://github.com/input-output-hk/lmdb-simple/pull/1) to the Haskell\\nLMDB bindings.\\n\\n### Benchmarking the CSJ prototype\\n\\nPrompted by previous benchmarks showing significant improvements in sync time by\\nusing more capabilities, we implemented a way to spread out the ChainSync\\nupdates over a larger period instead of firing them all at the same time. This\\ndidn\'t result in a noticeable speedup.\\n\\nWe also benchmarked the prototype with CSJ disabled (such that just the dynamo\\npeer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule\\nout/confirm overhead by non-ChainSync (mainly BlockFetch) related components.\\nThis results in era-specific behavior (speed is like the prototype in Byron, but\\nlike the baseline in Shelley). This deserves a closer look in the future.\\n\\nThis diagram shows the respective syncing progress, starting at Genesis and\\ncontinuing a good part into Shelley (with the dashed line indicating the\\nByron-to-Shelley transition).\\n\\n - Red: baseline\\n - Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.\\n - Blue: like Green, jumps are spread out.\\n - Orange: variant with no jumping, to measure unrelated overhead.\\n\\n![](/images/happy-path-csj-prototype-bench-2.svg)"},{"id":"2022-10-14-hydra","metadata":{"permalink":"/cardano-updates/2022-10-14-hydra","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-14-hydra.md","source":"@site/blog/2022-10-14-hydra.md","title":"Hydra Team Update","description":"High level summary","date":"2022-10-14T00:00:00.000Z","formattedDate":"October 14, 2022","tags":[{"label":"hydra","permalink":"/cardano-updates/tags/hydra"}],"readingTime":1.26,"hasTruncateMarker":false,"authors":[{"name":"Sebastian Nagel","title":"Hydra Team Lead","url":"https://github.com/ch1bo","imageURL":"https://github.com/ch1bo.png","key":"ch1bo"}],"frontMatter":{"title":"Hydra Team Update","slug":"2022-10-14-hydra","authors":"ch1bo","tags":["hydra"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-18-consensus"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-10-14-ledger"}},"content":"## High level summary\\n\\nThis week, the hydra team worked on implementing ADR18 to get backup & restore functionality of the `hydra-node` over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks \\"past the opening of a Head\\". We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.\\n\\n## What did the team achieve this week\\n\\n- Last week we thought we were done with [ADR18](https://hydra.family/head-protocol/adr/18/), but were not ...\\n- ... instead, SundaeSwap has been preparing their Rare bloom Hydra demo & needed assistence.\\n- Implemented a first version for persistence [#187](https://github.com/input-output-hk/hydra-poc/issues/187) in response.\\n- Enhanced CI to publish test results [on our website](https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results)\\n- Engineering meeting -> discussed rollbacks and discovered a solution for the rollback past open problem!\\n- Pulled static executable feature [#200](https://github.com/input-output-hk/hydra-poc/issues/200) into scope, implemented it and merged it!\\n- Received and read through a project proposal by a vendor (building a Hydra platform).\\n\\n## What are the goals of next week\\n\\n- Get backup/recovery [#187](https://github.com/input-output-hk/hydra-poc/issues/187) done with proper event sourcing (ADR18)\\n- Cut the next release, version `0.8.0`\\n- Address open comments on specification document & complete the list of identified gaps between specification and implementation [#452](https://github.com/input-output-hk/hydra-poc/issues/452)\\n- Have the CI build macos artifacts"},{"id":"2022-10-14-ledger","metadata":{"permalink":"/cardano-updates/2022-10-14-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-14-ledger.md","source":"@site/blog/2022-10-14-ledger.md","title":"Ledger Team Update","description":"High level summary","date":"2022-10-14T00:00:00.000Z","formattedDate":"October 14, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.03,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-10-14-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Hydra Team Update","permalink":"/cardano-updates/2022-10-14-hydra"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-05-consensus"}},"content":"## High level summary\\n\\nThe ledger team is still primarily focused on addressing\\n[technical](https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22)\\n[debt](https://github.com/input-output-hk/cardano-ledger/projects/3).\\nWe now have the infrastructure for versioning our serialization schemes,\\nwhich we continue to put into action.\\nWe have made first steps towards getting proper support for the\\n[formal ledger repository](https://github.com/input-output-hk/formal-ledger-specifications)\\n(in particular, we\'ve added nix builds and\\ncontinuous integration support).\\nWe are wrapping up an investigation of the performance of a critical\\nfunction used by the consensus layer for leader checks.\\nFinally, we are improving the packaging and versioning of our code.\\n\\n## Lower level summary\\n\\n### Completed Technical Debt\\n\\n- Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of\\n  our code lives in the `cardano-ledger-shelley` package, though with hindsight we can say that\\n  much of it should live in `cardano-ledger-core`.\\n  We continue to move things to `cardano-ledger-core`, and have much more to come. [[pull-3059]]\\n- We now have the infrastructure to support **versioned** serialization schemes.\\n  The inability to do this has caused us a lot difficulties,\\n  such as [[issue-3003]], [[issue-2965]] and [[issue-2444]].\\n  We are still in the process of switching to the versioned serialization scheme\\n  (such as [[pull-3078]]),\\n  but the infrastructure was completed in [[pull-3063]].\\n- We now have proper nix and CI support for the formal ledger project. [[pull-19]]\\n- A separate team is helping bring support for\\n  [CHaP](https://github.com/input-output-hk/cardano-haskell-packages)\\n  to all the cardano-node repositories.\\n  We have been helping out with this effort.\\n* A separate team continues working on upgrading all the\\n  cardano-node repositories to work with ghc 9.2.4.\\n  We have been helping out with this effort.\\n\\n### In-progress Technical Debt\\n\\nWe also have several fairly large pull-requests in review\\nthat we are working on.\\n\\n- In an on-going attempt to build out a more user-friendly API,\\n  we continue to remove `HasField` instances in place of using micro-lenses.\\n  The protocol parameters, in particular, are being worked on. [[pull-3045]]\\n- We are also renaming record fields to be consistent across the repository. [[pull-3062]]\\n- We are now cleaning up all the work we did to understand the performance\\n  of the TICKF transition. We have some improvements to the computatation\\n  as well. [[pull-3068]]\\n- We are adding more documentation, in particular to our `Twiddler` functionality. [[pull-3073]]\\n- The formal ledger is adding support for finite set theory. [[pull-20]]\\n\\n[issue-2444]: https://github.com/input-output-hk/cardano-ledger/issues/2444\\n[issue-2965]: https://github.com/input-output-hk/cardano-ledger/issues/2965\\n[issue-3003]: https://github.com/input-output-hk/cardano-ledger/issues/3003\\n\\n[pull-3059]: https://github.com/input-output-hk/cardano-ledger/pull/3059\\n[pull-3045]: https://github.com/input-output-hk/cardano-ledger/pull/3045\\n[pull-3062]: https://github.com/input-output-hk/cardano-ledger/pull/3062\\n[pull-3063]: https://github.com/input-output-hk/cardano-ledger/pull/3063\\n[pull-3068]: https://github.com/input-output-hk/cardano-ledger/pull/3068\\n[pull-3073]: https://github.com/input-output-hk/cardano-ledger/pull/3073\\n[pull-3078]: https://github.com/input-output-hk/cardano-ledger/pull/3078\\n[pull-19]: https://github.com/input-output-hk/formal-ledger-specifications/pull/19\\n[pull-20]: https://github.com/input-output-hk/formal-ledger-specifications/pull/20"},{"id":"2022-10-05-consensus","metadata":{"permalink":"/cardano-updates/2022-10-05-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-05-consensus.md","source":"@site/blog/2022-10-05-consensus.md","title":"Consensus Team Update","description":"High level summary","date":"2022-10-05T00:00:00.000Z","formattedDate":"October 5, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":1.825,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-10-05-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-10-14-ledger"},"nextItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-10-04-db-sync"}},"content":"## High level summary\\n\\nDuring the past two weeks, the consensus team worked on improving the\\nperformance of the ChainSync jumping logic, which is needed for Genesis. We also\\nrewrote the implementation of the mempool in the UTxO HD prototype which solved\\nthe issues that prevented us from running system level benchmarks. Also on the\\nUTxO HD front, we have an improved implementation of the sequence-of-differences\\n(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for\\nthe UTxO HD feature.\\n\\n## Executive summary\\n\\n- With the latest implementation of ChainSync jumping we are closer to the\\n  baseline performance. In particular, the prototype seems to benefit from the\\n  extra concurrency provided by additional capabilities.\\n- We rewrote the implementation of the mempool in the UTxO HD prototype. This\\n  rewrite was required due to performance problems we observed when running the\\n  [workbench](https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51).\\n  These performance problems prevented us from running system level benchmarks.\\n  The rewrite solved these issues. After the [UTxO-HD: mempool\\n  rewrite](https://github.com/input-output-hk/ouroboros-network/pull/4049) PR is\\n  merged, we will contact the Benchmarking team so that they run the system\\n  level benchmarks.\\n- The implementation of sequences of differences based on anti-diffs was\\n  integrated into the UTxO HD prototype. It is pending\\n  [review](https://github.com/input-output-hk/ouroboros-network/pull/4036) and\\n  we also need to run replay and syncing benchmarks to confirm that this will\\n  deliver a performance improvement, as observed in our micro-benchmarks.\\n- [The UTxO HD prototype\\n  inspection](https://github.com/input-output-hk/ouroboros-network/issues/3944)\\n  resulted in a [list of\\n  tests](https://github.com/input-output-hk/ouroboros-network/issues/4045)\\n  needed for consensus to consider the UTxO HD prototype as fully tested.\\n\\n## Additional information\\n\\n### Genesis\\n\\nBenchmarking setup: 50MBit/s, 50ms latency\\n\\n - Red: baseline\\n - Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.\\n\\nAs ChainSync Jumping involves many concurrent network operations at every jump,\\nwe tried to run the node with 6 instead of the default 2 capabilties.\\n\\n - Orange: baseline with 6 capabilities\\n - Blue: CSJ prototype with 6 capabilities\\n\\nThis diagram shows the respective syncing progress, starting at Genesis and\\ncontinuing a good part into Shelley (with the dashed line indicating the\\nByron-to-Shelley transition).\\n\\n![](/images/happy-path-csj-prototype-bench-1.svg)\\n\\nFurther work includes whether we can tune the prototype to better handle few\\ncapabilities, or to adapt the default number of capabilities (potentially just\\nwhile syncing)."},{"id":"2022-10-04-db-sync","metadata":{"permalink":"/cardano-updates/2022-10-04-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-04-db-sync.md","source":"@site/blog/2022-10-04-db-sync.md","title":"DB Sync Team Update","description":"DBSync Update","date":"2022-10-04T00:00:00.000Z","formattedDate":"October 4, 2022","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":1.65,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB Sync Team Update","slug":"2022-10-04-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-10-05-consensus"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-10-04-node-cli-api"}},"content":"## DBSync Update\\n\\n\\n### Fast restarts\\n We fixed a long overdue issue in db-sync which caused long delays on restarts\\n [1266](https://github.com/input-output-hk/cardano-db-sync/pull/1266). This has been\\n one of db-sync main objectives for this period. Restarts are now very fast,\\n because db-sync deletes almost nothing from the db, it just replays the ledger rules until it\\n reaches the tip of the db. The fix also improves reconnection speed, in cases where the node\\n restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a\\n deployment mess up a very old snapshot or no snapshot at all is used.\\n\\n### Property based testing\\nWe added stateful property based testing, using `quickcheck-state-machine`\\n [1269](https://github.com/input-output-hk/cardano-db-sync/pull/1269). These tests use empty or\\n almost empty blocks to test the new behaviour of restarts and rollbacks.\\n\\n These tests generate arbitrarily a list of symbolic commands from these:\\n\\n```\\nRollForward Int\\nRollBack BlockNo\\nStopDBSync\\nStartDBSync\\nRestartNode\\nAssertBlockNo BlockNo\\n```\\n\\nThe commands are translated into real commands. For example `RollForward Int` will forge a new block\\nthat fits on the current chain. These real commands are executed against db-sync using the mock\\nchain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync\\nwhich looks like this:\\n\\n``` haskell\\n  Model\\n    { serverTip :: BlockNo\\n    , dbSyncTip :: BlockNo\\n    , dbSynsIsOn :: Bool\\n    , dbSynsHasSynced :: Bool\\n    }\\n```\\n\\nFinally a number of postconditions are checked, related to the eventual block number of db-sync.\\n\\n### Tech Debt\\n\\nWe handled a number of tech debt in\\n [1275](https://github.com/input-output-hk/cardano-db-sync/pull/1275)\\n This improves the code format of db-sync, deletes many queries that were never used and groups the\\n others. This tech debt resolution not only improves the experience of working in db-sync, but can\\n facilitate some of our other objectives, as it makes it very explicit which queries are used\\n during syncing and which indexes are necessary.\\n\\n### Smash\\n\\nWe worked on fixing an issue related to fetching pool metadata\\n [1276](https://github.com/input-output-hk/cardano-db-sync/pull/1276).\\n The issue which is described in\\n [1270](https://github.com/input-output-hk/cardano-db-sync/issues/1270)"},{"id":"2022-10-04-node-cli-api","metadata":{"permalink":"/cardano-updates/2022-10-04-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-10-04-node-cli-api.md","source":"@site/blog/2022-10-04-node-cli-api.md","title":"Node API & CLI Team Update","description":"Node-Api-Cli Update","date":"2022-10-04T00:00:00.000Z","formattedDate":"October 4, 2022","tags":[{"label":"cli-api","permalink":"/cardano-updates/tags/cli-api"}],"readingTime":0.98,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-10-04-node-cli-api","authors":"Jimbo4350","tags":["cli-api"],"hide_table_of_contents":false},"prevItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-10-04-db-sync"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-30-ledger"}},"content":"## Node-Api-Cli Update\\n## 2022-10-04 - 2022-10-18\\n\\n### Executive Summary\\nThe majority of the team\'s time was spent between getting `1.34.4` ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to `cardano-cli`.\\n\\n### Completed\\n\\n- [GHC 9.2.4 preparations](https://github.com/input-output-hk/cardano-node/pull/4504)\\n\\n#### cardano-cli\\n\\n- [Serenity] - [Separate IO from txBuild and txBuildRaw functions](https://github.com/input-output-hk/cardano-node/pull/4491)\\n\\n#### cardano-api\\n\\n- [BUGFIX] - [TxWitness text envelope format does not roundtrip in Shelley era](https://github.com/input-output-hk/cardano-node/pull/4501)\\n\\n#### cardano-node\\n\\n- [Fix MacOS GHA CI](https://github.com/input-output-hk/cardano-node/pull/4526)\\n\\n### In Progress\\n\\n- [Release 1.34.4](https://github.com/input-output-hk/cardano-node/pull/4508)\\n\\n#### cardano-cli\\n\\n- [BUGFIX] - [Fix query era mismatch bug in transaction build command](https://github.com/input-output-hk/cardano-node/pull/4538)\\n- [Serenity] - [Condense Read and Validation modules in cardano-cli](https://github.com/input-output-hk/cardano-node/pull/4516)\\n- [BUGFIX]- [Stop the cli from changing the bytes in user-supplied data](https://github.com/input-output-hk/cardano-node/pull/4537)\\n- [Infer protocol params in transaction build](https://github.com/input-output-hk/cardano-node/pull/4431)\\n- [Allow assembling transactions with no witnesses](https://github.com/input-output-hk/cardano-node/pull/4408)\\n- [Add tx-mempool command to CLI](https://github.com/input-output-hk/cardano-node/pull/4276)\\n\\n### cardano-api\\n\\n- [Return Lovelace for calculateMinimumUTxO](https://github.com/input-output-hk/cardano-node/pull/4482)\\n- [Make TxBodyContent an instance of Monoid](https://github.com/input-output-hk/cardano-node/pull/4458)\\n- [Auto-balance multiasset transactions](https://github.com/input-output-hk/cardano-node/pull/4450)\\n\\n### cardano-node\\n\\n- [Stop running CI when the only changes are to docs](https://github.com/input-output-hk/cardano-node/pull/4263)\\n- [Rename TestEnableDevelopmentHardForkEras](https://github.com/input-output-hk/cardano-node/pull/4341)"},{"id":"2022-09-30-ledger","metadata":{"permalink":"/cardano-updates/2022-09-30-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-30-ledger.md","source":"@site/blog/2022-09-30-ledger.md","title":"Ledger Team Update","description":"Ledger Update","date":"2022-09-30T00:00:00.000Z","formattedDate":"September 30, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":2.285,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-09-30-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/2022-10-04-node-cli-api"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-09-27-network"}},"content":"## Ledger Update\\n\\nWe have continued focusing nearly entirely on addressing technical debt.\\nA lot of design work has begun for the next ledger era,\\nbut we do not yet have anything concrete to share.\\n\\n### Technical debt issues completed\\n\\n* [[issue-1676]][[pull-2992]] We have finally removed the ledger dependency on the\\n  `cardano-prelude` package. It was barely used in the ledger repository, and it added a dependency\\n  that we did not want to maintain. It was a bit difficult to remove, and we had\\n  to coordinate removing it from cardano-base.\\n  A lot ended up going into [pull-2992][pull-2992], due to the coordination effort, and we ended\\n  up updating Plutus as well.\\n  This means that we\'ve now also made a lot of progress on the problematic cost model serialization\\n  issues described in [issue-2902].\\n  In particular, after we resolve [issue-3014], we will not have to wait an epoch before\\n  releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.\\n* [[issue-3046]][[pull-3055]] We moved a module that is now only used in Byron to a Byron package.\\n* [[issue-3047]][[pull-3054]] We improved the interface to the `Value` (multi-asset) type.\\n* [[pull-3044]] We debugged and fixed a tricky compilation issue. Certain kinds of field updates\\n  were adding approximately 20 minutes to our compile time!\\n* [[issue-2932]][[pull-3036]] As a part of our ongoing re-organization of the codebase, we\\n  have added a `Cardano.Ledger.[Era].Core` module to each ledger era that has a TxBody class.\\n  Most classes defined in the era should go in this new module.\\n  We also re-export the `Cardno.Ledger.Core` module and the previous `Cardano.Ledger.[Era].Core`\\n  modules from each era.\\n\\n### Technical debt in progress\\n\\n* [[issue-3034]][[issue-3035]][[node-issue-4421]] We are continuing to write benchmarks to understand exactly where\\n  all the time is being spent on executing the `TICKF` transition.\\n  The consolidation of the per-stake-credential stake distribution to the per-stake-pool\\n  distribution does seem to account for a large amount of time (near a second as written, which we\\n  have down to about half a second with some optimizations),\\n  but this does not account for everything.\\n  Applying the reward update may also be a big contributing factor.\\n* [[pull-3033]][[pull-3038]][[pull-3041]] A separate team is working on upgrading all the\\n  cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.\\n* The nix scripts used to build our new\\n  [formal ledger model](https://github.com/input-output-hk/formal-ledger-specifications)\\n  do not work consistently for everyone, and we have been working on fixing these issues.\\n* [[issue-3014]] We are still working on adding a versioning scheme to all of the ledger\\n  serializers.\\n\\n[issue-1676]: https://github.com/input-output-hk/cardano-ledger/issues/1676\\n[issue-2902]: https://github.com/input-output-hk/cardano-ledger/issues/2902\\n[issue-2932]: https://github.com/input-output-hk/cardano-ledger/issues/2932\\n[issue-3014]: https://github.com/input-output-hk/cardano-ledger/issues/3014\\n[issue-3034]: https://github.com/input-output-hk/cardano-ledger/issues/3034\\n[issue-3035]: https://github.com/input-output-hk/cardano-ledger/issues/3035\\n[issue-3046]: https://github.com/input-output-hk/cardano-ledger/issues/3046\\n[issue-3047]: https://github.com/input-output-hk/cardano-ledger/issues/3047\\n\\n[node-issue-4421]: https://github.com/input-output-hk/cardano-node/issues/4421\\n\\n[pull-2992]: https://github.com/input-output-hk/cardano-ledger/pull/2992\\n[pull-3033]: https://github.com/input-output-hk/cardano-ledger/pull/3033\\n[pull-3038]: https://github.com/input-output-hk/cardano-ledger/pull/3038\\n[pull-3036]: https://github.com/input-output-hk/cardano-ledger/pull/3036\\n[pull-3041]: https://github.com/input-output-hk/cardano-ledger/pull/3041\\n[pull-3044]: https://github.com/input-output-hk/cardano-ledger/pull/3044\\n[pull-3054]: https://github.com/input-output-hk/cardano-ledger/pull/3054\\n[pull-3055]: https://github.com/input-output-hk/cardano-ledger/pull/3055"},{"id":"2022-09-27-network","metadata":{"permalink":"/cardano-updates/2022-09-27-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-27-network.md","source":"@site/blog/2022-09-27-network.md","title":"Network Team Update","description":"Network Update","date":"2022-09-27T00:00:00.000Z","formattedDate":"September 27, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":2.24,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-09-27-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-30-ledger"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-09-20-consensus"}},"content":"```mdx-code-block\\nimport  ReactPlayer from \'react-player\'\\n```\\n\\n## Network Update\\n\\n### Ouroboros Network\\n\\n* We finished high and low level _peer sharing_ design. See\\n  [Peer Sharing Implementation Plan](https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan)\\n* We started working on low-level design of _eclipse evasion_ (work in\\n  progress).\\n* We decided to use **peer sharing** instead of overloaded and ambiguous _gossip_ term.\\n  [PR input-output-hk/ouroboros-network#3980](https://github.com/input-output-hk/ouroboros-network/pull/3980)\\n* We fixed technical dept\\n  [issue input-output-hk/cardano-node#3905](https://github.com/input-output-hk/ouroboros-network/issues/3905) in\\n  the simulation testing of diffusion\\n  [PR input-output-hk/cardano-node#4004](https://github.com/input-output-hk/ouroboros-network/pull/4004)\\n* We deployed all our nodes using our new nix based deployment architecture.\\n  When deploying we found an issue in the\\n  [`RTView`](https://github.com/input-output-hk/cardano-node/issues/3752).\\n\\n### Ouroboros Consensus\\n\\n* Recently we found out that the consensus does not log exceptions thrown during\\n  intiialisation.  This was fixed in\\n  [PR input-output-hk/ouroboros-network#4015](https://github.com/input-output-hk/ouroboros-network/pull/4015)\\n  As part of this pull request we also changed that all exceptions rethrown by\\n  the connection handler thread are wrapped in `ExceptionInHandler`.\\n\\n#### Some older items, which were not announced\\n\\n* We identified and fixed an issue related to socket activation (socket options\\n  where not set for sockets passed through socket activation).\\n  [PR input-output-hk/cardano-node#3979](https://github.com/input-output-hk/ouroboros-network/pull/3979)\\n  This fix will be released in the next `cardano-node` release.\\n\\n### Cardano Node\\n\\n* We extended the NixOs service module so that one can modify `socketPath`,\\n  `runtimeDir`, `databasePath`, `traceSocketPathAccept`,\\n  `traceSocketPathConnect` and `stateDir` options.\\n   [PR input-output-hk/cardano-node#4196](https://github.com/input-output-hk/cardano-node/pull/4196)\\n\\n### IO-Sim\\n\\nWe resolved a number of issues before release of `io-sim` on hackage:\\n\\n* [issue input-output-hk/ouroboros-network#2797](https://github.com/input-output-hk/ouroboros-network/issues/2797)\\n* [issue input-output-hk/ouroboros-network#2650](https://github.com/input-output-hk/ouroboros-network/issues/2650)\\n* [issue input-output-hk/ouroboros-network#3436](https://github.com/input-output-hk/ouroboros-network/issues/3436)\\n* [issue input-output-hk/ouroboros-network#2588](https://github.com/input-output-hk/ouroboros-network/issues/2588)\\n* [issue input-output-hk/ouroboros-network#2587](https://github.com/input-output-hk/ouroboros-network/issues/2587)\\n* [issue input-output-hk/ouroboros-network#2586](https://github.com/input-output-hk/ouroboros-network/issues/2586)\\n\\nSee [PR #24](https://github.com/input-output-hk/io-sim/pull/24).\\n\\nWe also improved experience for contributors of `io-sim` and `typed-protocols` by adding issue templates:\\n* [PR input-output-hk/io-sim#25](https://github.com/input-output-hk/io-sim/pull/25)\\n\\n### Typed Protocols\\n\\n* We pushed a branch which identifies a GHC quirk:\\n  [coot/typed-protocols-rewrite-StateToken-problem](https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem).\\n  That\'s too be resolved in order to push forward review of the redesign in\\n  [PR input-output-hk/typed-protocols#3](https://github.com/input-output-hk/typed-protocols/pull/3).\\n* As for `io-sim`, we wrote issue templates:\\n  [PR input-output-hk/typed-protocols#11](https://github.com/input-output-hk/typed-protocols/pull/11)\\n\\n### Input Endorsers Simulation\\n\\nNew features include:\\n\\n* Histograms of block arrival frequency, for both network (inbound) and CPU\\n  (block validation). This is interesting to check that we\'re not overloading\\n  the CPU block validation capacity, or network link capacity. Or alternatively\\n  to observe the behaviour in an overload situation if we set the block\\n  generation rate high enough.\\n\\n* Pie chart of utilisation of TCP links. This shows how small a fraction of\\n  links are being used at any one time, and shows that once the system \\"warms\\n  up\\" and is operating stably, most block delivery is ballistic.\\n\\n* Showing off the new screen layout combinators, that let us put multiple\\n  charts, titles etc on screen at once and scale them to whatever screen or\\n  video resolution we like without having to tweak numbers (this example is\\n  scaled to fit 1080HD video resolution).\\n\\n\\n```mdx-code-block\\n<ReactPlayer playing controls url=\'/p2p-relay-5.mp4\' />\\n```"},{"id":"2022-09-20-consensus","metadata":{"permalink":"/cardano-updates/2022-09-20-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-20-consensus.md","source":"@site/blog/2022-09-20-consensus.md","title":"Consensus Team Update","description":"- We proposed a fix for the performance degradation observed when running","date":"2022-09-20T00:00:00.000Z","formattedDate":"September 20, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":3.895,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-09-20-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-09-27-network"},"nextItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-09-19-db-sync"}},"content":"- We proposed a fix for the performance degradation observed when running\\n  distributed multi-node benchmarks in the UTxO HD feature branch. While this\\n  fixed the problems observed when running local benchmarks, it broke the\\n  `ThreadNet` tests due to concurrency issues. Therefore, we think it is wise to\\n  start redesigning the UTxO HD mempool integration.\\n- We did several rounds of code review on the alternative implementation of\\n  diff-sequences required by the UTxO HD feature based on the idea of\\n  anti-diffs. This alternative implementation is close to being merged, and the\\n  next step is to integrate this to the UTxO HD branch, so that we can run\\n  ad-hoc replaying and syncing from scratch benchmarks and compare these with\\n  the baseline. The micro-benchmarks we elaborated for the alternative\\n  implementation show speedups of up to 4x, so we are optimistic about the\\n  performance of replaying and syncing from scratch benchmarks, however it is\\n  important to notice that *due to the nature of UTxO HD* we will still be\\n  slower than the baseline.\\n- The final draft of the Genesis implementation specification is ready for\\n  review.\\n- We implemented a prototype for the happy path of Genesis\' ChainSync Jumping\\n  (CSJ). The prototype is slower than the baseline, however it is not the latest\\n  version of the prototype and the jump interval is very small.\\n- Work on integrating Conway has [stopped][nicks-comment-conway] since\\n  priorities have changed.\\n- We started work on benchmarking epoch-boundaries and epoch overhead\\n  [pr-4014][pr-4014]. To this end, we made use of a modified version of our\\n  `db-analyser` tool. We ran the new benchmarking setup using the Cardano\\n  mainnet chain, and we can see that block tick and application take\\n  substantially longer at epoch boundaries, although there are a couple of slots\\n  during an epoch in which these computations take more than normal. We notified\\n  the ledger team about these findings. We will use this modified version of\\n  `db-analyser` to investigate the epoch overhead.\\n\\n\\n# Workstreams\\n\\n## UTxO HD\\n\\n - Spent quite some time investigating the root cause of the degradation in\\n   performance observed in the benchmarks. We run the `make forge-stress`\\n   benchmarks locally in order to debug this behavior.\\n\\n    - Transaction batching doesn\'t make a notable difference in the outcome\\n      (considering we are using the in-memory backend).\\n\\n    - The mempool batching implementation required asynchronous transaction\\n      validation which is a violation of the `LocalTxSubmission` protocol\\n      contract and therefore if we continued on that route, the impact would\\n      have been quite big.\\n\\n    - The STM logic we implemented by using a `TMVar` for the mempool internal\\n      state was buggy and under certain circumstances it seemed to lock.\\n      Reverting the mempool internal state to be stored in a `TVar` seems to\\n      solve this problem.\\n\\n    - The results we get after this change look almost identical to the ones\\n      from the baseline.\\n\\n  - [The anti-diff prototype (PR\\n    #3997)](https://github.com/input-output-hk/ouroboros-network/pull/3997) has\\n    been reviewed and is close to being merged.\\n\\n    - A follow-up issue ([issue\\n      #4010](https://github.com/input-output-hk/ouroboros-network/issues/4010))\\n      to integrate the anti-diff prototype in the various `consensus` packages\\n      was created. A first version of the integration exists, and all tests\\n      pass. A next step is to get some indication of the \\"real\\" performance gain\\n      by profiling `db-analyser` (or `cardano-node`).\\n\\n## Genesis\\n\\n - Final draft of the Genesis implementation specification, now up for review.\\n\\n - Local benchmark setup for parameter tuning via the happy path ChainSync\\n   Jumping (CSJ) prototype ([Issue 3987][issue-3987]).\\n\\n    - Context: Our Genesis design requires us to check in with a large (~20)\\n      number of servers periodically while syncing. These servers are offered\\n      jump requests via the ChainSync protocol (hence the name), which they can\\n      accept or decline. If a peer declines, the Genesis rule allows us to\\n      determine whether a node actually has a better chain.\\n\\n    - The \\"happy path\\" is when no peer declines a jump. We want this to have\\n      close to no overhead compared to status quo, i.e. syncing without Genesis.\\n\\n    - We implemented a prototype for this happy path, and are now starting to\\n      test in various configurations (number of peers, latency, bandwidth) to\\n      tune the performance of ChainSync jumping, i.e. how complicated our logic\\n      of choosing when to jump needs to be.\\n\\n    **Example:**\\n\\n     - Simulated connection: 50 MBit/s, 50ms latency\\n\\n     - Jump interval: 3000 slots (on the low end, could be increased to up to\\n       `3k/f`)\\n\\n     - Red: baseline (1.35.3), one peer in topology file\\n\\n     - Blue: Preliminary version of our prototype, with 10 peers.\\n\\n    ![](/images/happy-path-csj-prototype-prelim.svg)\\n\\n    It is slower by about ~30%, but it is not the latest version of the\\n    prototype, and the jump interval is very small, making CSJ more of a\\n    bottleneck.\\n\\n## Technical debt\\n\\n- Fix flakiness in ChainDB QSM tests ([PR 3990](https://github.com/input-output-hk/ouroboros-network/pull/3990)).\\n\\n[issue-3987]: https://github.com/input-output-hk/ouroboros-network/issues/3987\\n[nicks-comment-conway]: https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031\\n[pr-4014]: https://github.com/input-output-hk/ouroboros-network/pull/4014"},{"id":"2022-09-19-db-sync","metadata":{"permalink":"/cardano-updates/2022-09-19-db-sync","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-19-db-sync.md","source":"@site/blog/2022-09-19-db-sync.md","title":"DB Sync Team Update","description":"DBSync Update","date":"2022-09-19T00:00:00.000Z","formattedDate":"September 19, 2022","tags":[{"label":"db-sync","permalink":"/cardano-updates/tags/db-sync"}],"readingTime":1.525,"hasTruncateMarker":false,"authors":[{"name":"Kostas Dermentzis","title":"Cardano DB-Sync Software Engineer","url":"https://github.com/kderme","imageURL":"https://github.com/kderme.png","key":"kderme"}],"frontMatter":{"title":"DB Sync Team Update","slug":"2022-09-19-db-sync","authors":"kderme","tags":["db-sync"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-09-20-consensus"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-16-ledger"}},"content":"## DBSync Update\\n\\n### New Tag\\nWe created a new db-sync tag 13.0.5 which addresses shortcomings of the last\\nrelease 13.0.4. It is currently under testing.\\nThe Changelog is\\n [here](https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305) and in more details:\\n\\n* We fixed fees for tx with phase 2 failure that didn\'t include a total collateral field.\\n [1248](https://github.com/input-output-hk/cardano-db-sync/pull/1248)\\n\\n* We fixed an issue that could cause db-sync to crash if a specific rollback occured.\\n [1247](https://github.com/input-output-hk/cardano-db-sync/pull/1247)\\n\\n* DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but\\n could result in the wrong CBOR encoding being inserted.\\n [1217](https://github.com/input-output-hk/cardano-db-sync/pull/1217)\\n\\n* All the fixes above come with unit tests which validates the fix.\\n\\n* Added support for preprod and preview from docker. DBSync no longer needs to include the configs\\n for different networks, these are directly fetched from the cardano world.\\n [1254](https://github.com/input-output-hk/cardano-db-sync/pull/1254)\\n\\n* We added better support from docker for the new disable options and the overall documentation.\\n [1260](https://github.com/input-output-hk/cardano-db-sync/pull/1260)\\n\\nAll the above were also backported to the master branch\\n\\n### Open source\\n\\nWe made the db-sync [board public](https://github.com/orgs/input-output-hk/projects/52/views/1), so\\n everyone can have access on the issues we prioritise.\\n We also added new tasks to the board, some of them could be approachable to newcomers or people who\\n want to contribute.\\n\\n### Progress on tech debt and new features\\n* [1223](https://github.com/input-output-hk/cardano-db-sync/pull/1223) was merged, which removes the\\n foreign keys from the db schema. This opens the road to a number of optimizations.\\n\\n* An additional fix on top of the previous work was added\\n [1250](https://github.com/input-output-hk/cardano-db-sync/pull/1250)\\n\\n* An initial version where DBSync does not rollback on restart is done here\\n [1266](https://github.com/input-output-hk/cardano-db-sync/pull/1266).\\nThis allows db-sync to restart much faster, without the need to delete data and reinsert them. In\\n the future it can also facilitate migrations in cases where the ledger snapshots have a breaking\\n  change, without the need to resync everything from genesis."},{"id":"2022-09-16-ledger","metadata":{"permalink":"/cardano-updates/2022-09-16-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-16-ledger.md","source":"@site/blog/2022-09-16-ledger.md","title":"Ledger Team Update","description":"Ledger Update","date":"2022-09-16T00:00:00.000Z","formattedDate":"September 16, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.625,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-09-16-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"DB Sync Team Update","permalink":"/cardano-updates/2022-09-19-db-sync"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-01-ledger"}},"content":"## Ledger Update\\n\\nWe have been focused nearly entirely on addressing technical debt.\\n\\n* We introduced more consistent naming across eras, this time for the auxiliary data.\\n  See [3032](https://github.com/input-output-hk/cardano-ledger/pull/3032).\\n* We made clear how the `consumed` functions differs between eras (which was a previous source of\\n  confusion), and added some related support to the fledgling ledger API.\\n  See [3016](https://github.com/input-output-hk/cardano-ledger/pull/3016).\\n* We added clarity and organizational consistency to the main ledger era type synonyms.\\n  See [3017](https://github.com/input-output-hk/cardano-ledger/pull/3017).\\n* We removed code duplication related to the input data hashes.\\n  See [3018](https://github.com/input-output-hk/cardano-ledger/pull/3018).\\n* We split up a large module into smaller components. The large module was actually causing our\\n  CI to time out.\\n  See [3020](https://github.com/input-output-hk/cardano-ledger/pull/3020).\\n* We cleaned up stale information in our cabal files, and upgraded cabal 3.8.\\n  See [3023](https://github.com/input-output-hk/cardano-ledger/pull/3023),\\n  [3031](https://github.com/input-output-hk/cardano-ledger/pull/3031),\\n  and [3028](https://github.com/input-output-hk/cardano-ledger/pull/3028).\\n* We made consistent, standalone `TxOut` (transaction output) modules for every era.\\n  See [3024](https://github.com/input-output-hk/cardano-ledger/pull/3024).\\n* We brought consistency to a maddening inconsistent use of type variables indicating the specific\\n  choice of cryptographic primitives. In particular, all uses of `crypto` have been renamed to `c`.\\n  See [3027](https://github.com/input-output-hk/cardano-ledger/pull/3027).\\n* We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric\\n  types that will compose better in the future and which simplifies the constraints.\\n  See [3029](https://github.com/input-output-hk/cardano-ledger/pull/3029).\\n* We consolidated some existing fragmented logic regarding how we gather the scripts needed for a\\n  given transaction. This is a much needed cleanup to prevent future mistakes.\\n  See [3019](https://github.com/input-output-hk/cardano-ledger/pull/3019).\\n* We fixed a problem with our generators that was causing a fair number of our property tests to\\n  fail in CI.\\n  See [3039](https://github.com/input-output-hk/cardano-ledger/pull/3039).\\n* We have started the work to update Plutus. This will bring support for SECP in the next major\\n  protocol version, and also address a\\n  [problem](https://github.com/input-output-hk/cardano-ledger/issues/2902)\\n  that we current have evolving the cost models.\\n  See [3030](https://github.com/input-output-hk/cardano-ledger/pull/3030).\\n* We addressed a small issue that came up when integrating the conway era downstream, namely\\n  the lack of some serialization instances.\\n  See [3022](https://github.com/input-output-hk/cardano-ledger/pull/3022)."},{"id":"2022-09-01-ledger","metadata":{"permalink":"/cardano-updates/2022-09-01-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-01-ledger.md","source":"@site/blog/2022-09-01-ledger.md","title":"Ledger Team Update","description":"Ledger Update","date":"2022-09-01T00:00:00.000Z","formattedDate":"September 1, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/tags/ledger"}],"readingTime":1.94,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-09-01-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-16-ledger"},"nextItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-08-31-consensus"}},"content":"## Ledger Update\\n\\nSince finishing up support for the Vasil Hardfork, the ledger team has been\\nfocused on two main things: a new ledger era and technical debt.\\n\\n### New minimal ledger era\\n\\nWe have implemented a new ledger era named `conway` which is nearly identical\\nto the `babbage` era. This has been the first time that we have been able to see\\nwhat a minimal ledger era looks like. We have finished this task, modulo any\\nintegration issues that might come up. The only thing that the `conway` era\\ndoes differently from the `babbage` era is provide support for rotating\\nthe master keys using the hardfork combinator\'s state translation.\\nWe may end up adding features to the `conway` era, but it is a nice exercise\\nseeing what it looks like to get a minimal ledger era supported in all the\\ndownstream components.\\n\\n### Addressing technical debt\\n\\nWe have been addressing technical debt, mostly in an effort to make the\\nrepository a more friendly code base to work in.\\n\\n- We have begun work on a ledger API, called `cardano-ledger-api`.\\n- We have done a big re-design of the major type classes used in the ledger.\\n  With hindsight on our side, we now have something much more organized and\\n  easier to use.\\n- We have done a lot of re-naming. The names across eras are now much more\\n  uniform, avoid certain confusions that plagued us, and are clearer in where\\n  they are from.\\n- We have reduced a lot of code duplication that could lead to bugs if you\\n  do not have the whole code base in your head.\\n- We have added a handful of performance improvements.\\n- We added type safety in a number of locations. In particular, the type of\\n  values that can be minted in a transaction no longer allow for Lovelace\\n  in the type, and some functions which used to handle both timelock scripts\\n  and plutus script now correctly enoforce at the type level that only one of\\n  them can be used.\\n- We made our generators so that they now produce a much richer set of\\n  valid serializations. There is room within CBOR to serialize the same\\n  data structure in multiple ways, and it is helpful to have the generators\\n  use a wide variety.\\n- We have begun re-organizing our test suites."},{"id":"2022-08-31-consensus","metadata":{"permalink":"/cardano-updates/2022-08-31-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-08-31-consensus.md","source":"@site/blog/2022-08-31-consensus.md","title":"Consensus Team Update","description":"Executive summary","date":"2022-08-31T00:00:00.000Z","formattedDate":"August 31, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/tags/consensus"}],"readingTime":8.925,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Team Update","slug":"2022-08-31-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/2022-09-01-ledger"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/2022-08-12-network"}},"content":"## Executive summary\\n\\n- We did most of the heavy lifting required to integrate the Conway era.\\n- We have property tests for the UTxO HD backing store API implementations. A\\n  possible bug was identified. Work is ongoing to make sure the property-tests\\n  cover all the relevant cases.\\n- We implemented and benchmarked the \\"anti-diff\\" prototype to speed up the UTxO\\n  HD functionality. Results show a rough speedup of `4x` to `5.5x` across\\n  several scenarios. Note that: [\\"Data reported by `tasty-bench` is only of\\n  indicative and comparative significance.\\"](https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html).\\n  We are investigating additional performance improvements. The \\"anti-diff\\"\\n  prototype and benchmarks are still pending code review.\\n- We elaborated a draft specification for the Genesis implementation and\\n  `ChainSync` jumping optimization.\\n\\n## Workstreams\\n\\n### Conway\\n\\n - Integration PR of the minimal Conway era ([Issue #3963][issue-3962], [PR\\n   #3971][pull-3971]).\\n - Discussions with Ledger revealed possible sources of confusion about which\\n   data should be changed in the Conway era. As a result, a new technical debt\\n   issue was raised, which does not block the integration of the Conway era\\n   ([Issue #3976][issue-3976]).\\n\\n### UTxO HD\\n\\n- [Issue #3954][issue-3954], [branch][branch-3954]: The functionality of a\\n  backing store, which is the interface to the on-disk part of ledger state in\\n  UTxO-HD, is tested at a high level through the `OnDisk` tests. However, some\\n  functionalities remain untested, e.g., reads of ranges of keys. As such, we\\n  have implemented `quickcheck-state-machine` tests that exercise backing stores\\n  directly. The tests are reusable for different backing store implementations\\n  because the tests are implementation-agnostic: Any backing store that conforms\\n  to the backing store interface can be plugged into the tests. Work is still\\n  ongoing to label/monitor the tests, such that we can verify that interesting\\n  cases are being tested. Furthermore, a possible bug has been identified in the\\n  LMDB backing store with respect to range reads, though the bug has not been\\n  resolved yet.\\n- [Issue #3946][issue-3946], [branch][branch-4199], [PR #3882][pull-3882]: The\\n  \\"anti-diff\\" prototype proposes an alternative approach to keeping track of\\n  sequences (more specifically, `FingerTree`s) of diffs. These diff sequences\\n  are a component of the in-memory parts of the ledger state in UTxO-HD. Since\\n  the consensus code often requires the cumulative diff of a sequence of diffs,\\n  the current implementation \\"caches\\" cumulative diffs of each subtree in the\\n  diff sequence. This caching allows relatively fast reconstruction of the total\\n  cumulative diff, but this caching proved to incur a non-negligible cost: when\\n  we manipulate diff sequences through splits and appends, we force re-computing\\n  a logarithmic number of caches. This is problematic, since we often split and\\n  append in consensus: we split when we flush diffs to a backing store or when\\n  we roll back blocks, and we append when pushing blocks. The new approach\\n  should reduce the overhead of this caching.\\n\\n  We implemented micro-benchmarks for the \\"anti-diff\\" prototype: we\\n  first generate a sequence of commands (`Forward`, `Push`, `Flush`, or\\n  `Rollback`) through a simulation, after which we measure the performance of\\n  applying the commands to a diff sequence. In this context, `Forward` means\\n  forwarding of values through a diff, whereas `Rollback` means switching to\\n  a different fork by rolling back diffs/blocks and pushing new ones.\\n  Moreover, we compare the performance for the two implementations: the\\n  \\"legacy\\" approach, and the anti-diff approach.\\n\\n  Some preliminary results were positive, but we needed to revisit the\\n  benchmark\'s configuration to obtain more definitive results. After a\\n  discussion with @dcoutts and the consensus team about this configuration\\n  (e.g., number of commands generated, choice of the security parameter `k`),\\n  the benchmarks should now be closer to the realistic setting. The following\\n  configuration specifies the default configuration that is used in the\\n  benchmarking code:\\n  * Number of commands generated: `10_000`\\n  * Security parameter `k`: `2160`\\n  * Number of initial backing values: `100`\\n  * Number of key-value pairs deleted by a push: `50`\\n  * Number of key-value pairs inserted by a push: `50`\\n  * Number of key-value pairs forwarded by a forward: `50`\\n  * Probability of a large (in the range `[1000, 2000]`) rollback: `0.05`\\n  * Probability of a small (in the range `[1, 10]`) rollback: `0.95`\\n  * Order of commands:\\n    * An equal number of forward and pushes.\\n    * `1` flush every `10` pushes.\\n    * `1` rollback every `100` pushes\\n\\n  Moreover, we run four benchmark scenarios:\\n  * Default configuration\\n  * Without rollbacks\\n  * With only small rollbacks\\n  * Without rollbacks, larger flushes (`1` flush every `100` pushes)\\n\\n  ### How to read results\\n\\n  Note: this section uses documentation from the\\n  [tasty-bench](https://hackage.haskell.org/package/tasty-bench) package to\\n  explain how to read the results of running our benchmarks.\\n\\n  Running a benchmark scenario gives us the following (curated) output:\\n  ```text\\n  ...\\n  AntiDiff:                               OK (18.27s)\\n    2.527 s \xb1  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x\\n  LegacyDiff:                             OK (32.73s)\\n    10.829 s \xb1 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory\\n  ...\\n  ```\\n\\n  The output says that the first benchmark, which exercises the anti-diff\\n  prototype, was repeatedly executed for `18.27` seconds (wall-clock time),\\n  its predicted mean CPU time was `2.527` seconds and means of individual\\n  samples do not often diverge from it further than `\xb1 47` milliseconds\\n  (double standard deviation). We also configure the RTS to collect GC\\n  statistics, which enables `tasty-bench` to estimate and report memory usage.\\n  This data is reported as per `RTSStats` fields: `allocated_bytes`,\\n  `copied_bytes` and `max_mem_in_use_bytes`. So, the output of the first\\n  benchmark says that a total of `2.1 GB` of memory was allocated, that a\\n  total of `544 MB` of memory were copied, and that the peak memory in usage\\n  was `2.2 GB`. We read the output for the second benchmark in the same way.\\n\\n  Furthermore, the benchmark compares the mean CPU times for\\n  both the anti-diff and legacy approaches: In this case, the mean CPU time\\n  for the anti-diff approach is `~0.23x` the mean CPU time for the legacy\\n  approach. Conversely, the mean CPU time for the legacy approach is\\n  `1 / 0.23 ~= 4.35x` the mean CPU time for the anti-diff approach. We will\\n  call `0.23x` the *improvement factor*. We will call `4.35x` the *speedup*.\\n\\n  Note that these improvement factors (and reported results) are subject to\\n  noise, randomness, the specific configuration parameters, and the whims\\n  of statistics. Data reported by `tasty-bench` is only of indicative and\\n  comparative significance.\\n\\n  ### Results\\n\\n  For each of the 4 scenarios, we list the results of running the anti-diff and\\n  legacy approaches 5 times. We run the benchmarks 5 times to get an indication\\n  of whether the results are similar across multiple runs. Furthermore, we\\n  calculate the accompanying *ranges* (if applicable) of improvement factors and\\n  speedups.\\n\\n  Note also the decrease in total bytes allocated and total bytes copied for\\n  the anti-diff approach compared to the legacy approach.\\n\\n  #### Default configuration\\n\\n  |Name|Mean CPU time|2*Stdev (CPU time)|Total bytes allocated|Total bytes copied|Peak memory|\\n  |-|-|-|-|-|-|\\n  |Run 1: AntiDiff|2.533 s (0.23x)|4.7 ms|2.1 GB|557 MB|2.4 GB|\\n  |Run 1: LegacyDiff|10.792 s|162 ms|6.8 GB|2.3 GB|2.4 GB|\\n  |Run 2: AntiDiff|2.508 s (0.23x)|245 ms|2.1 GB|515 MB|2.2 GB|\\n  |Run 2: LegacyDiff|10.850 s| 30 ms|6.9 GB|2.3 GB|2.2 GB|\\n  |Run 3: AntiDiff|2.562 s (0.23x)|5.0 ms|2.1 GB|552 MB|2.2 GB|\\n  |Run 3: LegacyDiff|10.993 s|149 ms|6.9 GB|2.3 GB|2.2 GB|\\n  |Run 4: AntiDiff|2.168 s (0.22x)|5.3 ms|1.8 GB|434 MB|2.0 GB|\\n  |Run 4: LegacyDiff|9.976 s| 39 ms|6.3 GB|2.0 GB|2.0 GB|\\n  |Run 5: AntiDiff|2.527 s (0.23x)| 47 ms|2.1 GB|544 MB|2.2 GB|\\n  |Run 5: LegacyDiff|10.829 s|148 ms|6.8 GB|2.3 GB|2.2 GB|\\n\\n  * Improvement factor: `[0.22, 0.23]`\\n  * Speedup : `[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]`\\n\\n  #### No rollbacks\\n\\n  |Name|Mean CPU time|2*Stdev (CPU time)|Total bytes allocated|Total bytes copied|Peak memory|\\n  |-|-|-|-|-|-|\\n  |Run 1: AntiDiff|1.638 s (0.19x)| 36 ms|1.4 GB|181 MB|2.4 GB|\\n  |Run 1: LegacyDiff|8.656 s|207 ms|5.7 GB|1.5 GB|2.4 GB|\\n  |Run 2: AntiDiff|1.638 s (0.19x)| 75 ms|1.4 GB|181 MB|2.2 GB|\\n  |Run 2: LegacyDiff|8.654 s|322 ms|5.7 GB|1.5 GB|2.2 GB|\\n  |Run 3: AntiDiff|1.663 s (0.19x)| 74 ms|1.4 GB|181 MB|2.2 GB|\\n  |Run 3: LegacyDiff|8.799 s|216 ms|5.7 GB|1.5 GB|2.2 GB|\\n  |Run 4: AntiDiff|1.645 s (0.19x)| 51 ms|1.4 GB|181 MB|2.0 GB|\\n  |Run 4: LegacyDiff|8.732 s|261 ms|5.7 GB|1.5 GB|2.0 GB|\\n  |Run 5: AntiDiff|1.639 s (0.19x)| 19 ms|1.4 GB|181 MB|2.2 GB|\\n  |Run 5: LegacyDiff|8.653 s|234 ms|5.7 GB|1.5 GB|2.2 GB|\\n\\n  * Improvement factor: `0.19`\\n  * Speedup : `1 / 0.19 ~= 5.25`\\n\\n\\n  #### Only small rollbacks\\n\\n  |Name|Mean CPU time|2*Stdev (CPU time)|Total bytes allocated|Total bytes copied|Peak memory|\\n  |-|-|-|-|-|-|\\n  |Run 1: AntiDiff|1.833 s (0.18x)| 36 ms|1.5 GB|185 MB|2.4 GB|\\n  |Run 1: LegacyDiff|10.362 s|867 ms|5.8 GB|1.6 GB|2.4 GB|\\n  |Run 2: AntiDiff|1.696 s (0.19x)| 30 ms|1.5 GB|185 MB|2.2 GB|\\n  |Run 2: LegacyDiff|8.822 s|106 ms|5.8 GB|1.5 GB|2.2 GB|\\n  |Run 3: AntiDiff|1.702 s (0.19x)| 44 ms|1.5 GB|186 MB|2.2 GB|\\n  |Run 3: LegacyDiff|8.906 s|147 ms|5.8 GB|1.5 GB|2.2 GB|\\n  |Run 4: AntiDiff|1.701 s (0.19x)| 47 ms|1.5 GB|185 MB|2.0 GB|\\n  |Run 4: LegacyDiff|8.949 s|197 ms|5.8 GB|1.5 GB|2.0 GB|\\n  |Run 5: AntiDiff|1.677 s (0.19x)| 55 ms|1.5 GB|186 MB|2.2 GB|\\n  |Run 5: LegacyDiff|8.856 s|177 ms|5.8 GB|1.5 GB|2.2 GB|\\n\\n  * Improvement factor: `[0.18, 0.19]`\\n  * Speedup : `[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]`\\n\\n  #### No rollbacks, larger flushes (every 100 pushes)\\n\\n  |Name|Mean CPU time|2*Stdev (CPU time)|Total bytes allocated|Total bytes copied|Peak memory|\\n  |-|-|-|-|-|-|\\n  |Run 1: AntiDiff|1.643 s (0.25x)| 21 ms|1.5 GB|196 MB|2.4 GB|\\n  |Run 1: LegacyDiff|6.591 s|351 ms|4.0 GB|1.4 GB|2.4 GB|\\n  |Run 2: AntiDiff|1.616 s (0.25x)| 47 ms|1.5 GB|196 MB|2.2 GB|\\n  |Run 2: LegacyDiff|6.520 s|232 ms|4.0 GB|1.4 GB|2.2 GB|\\n  |Run 3: AntiDiff|1.640 s (0.25x)| 34 ms|1.5 GB|196 MB|2.2 GB|\\n  |Run 3: LegacyDiff|6.540 s|150 ms|4.0 GB|1.4 GB|2.2 GB|\\n  |Run 4: AntiDiff|1.635 s (0.25x)| 76 ms|1.5 GB|196 MB|2.0 GB|\\n  |Run 4: LegacyDiff|6.589 s|131 ms|4.0 GB|1.4 GB|2.0 GB|\\n  |Run 5: AntiDiff|1.628 s (0.25x)| 19 ms|1.5 GB|196 MB|2.2 GB|\\n  |Run 5: LegacyDiff|6.490 s|5.9 ms|4.0 GB|1.4 GB|2.2 GB|\\n\\n  * Improvement factor: `0.25`\\n  * Speedup : `1 / 0.25 ~= 4`\\n\\n### Genesis\\n\\n - We elaborated a draft of the specification of the Genesis implementation and\\n   the ChainSync Jumping optimization. In particular, this includes a proof\\n   sketch that the latter preserves liveness and safety in all cases ([Issue\\n   3964][issue-3964]).\\n      - @nfrisby\'s main realization during this sprint was that he had been\\n        focusing so far on the case where the selected chain is an extension of\\n        the intersection of our peers\' ChainSync candidates.\\n      - This is the main case, ie an \\"absorbing\\" state, but it\'s not the only\\n        case.\\n      - The new proof sketch begins by case splitting on that predicate, and\\n        that made the sketch quite a bit easier to follow.\\n - We continued working on the \\"happy path\\" `ChainSync` Jumping prototype ([Issue\\n   3960][issue-3960]).\\n\\n### Technical debt\\n\\n - We started working on the issues required to re-enable nightly CI runs..\\n   Nightly CI runs have far more lax time constraints, which gives the option to\\n   run significantly more property tests than in our regular CI. To this end, we\\n   merged a PR to easily adapt the number of tests globally ([PR\\n   #3947][pull-3947]).\\n\\n[issue-3954]: https://github.com/input-output-hk/ouroboros-network/issues/3954\\n[branch-3954]: https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests\\n[issue-3946]: https://github.com/input-output-hk/ouroboros-network/issues/3946\\n[branch-4199]: https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs\\n[pull-3882]: https://github.com/input-output-hk/ouroboros-network/pull/3882\\n[pull-3947]: https://github.com/input-output-hk/ouroboros-network/pull/3947\\n[issue-3960]: https://github.com/input-output-hk/ouroboros-network/issues/3960\\n[issue-3962]: https://github.com/input-output-hk/ouroboros-network/issues/3962\\n[issue-3964]: https://github.com/input-output-hk/ouroboros-network/issues/3964\\n[pull-3971]: https://github.com/input-output-hk/ouroboros-network/pull/3971\\n[issue-3976]: https://github.com/input-output-hk/ouroboros-network/issues/3976"},{"id":"2022-08-12-network","metadata":{"permalink":"/cardano-updates/2022-08-12-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-08-12-network.md","source":"@site/blog/2022-08-12-network.md","title":"Network Team Update","description":"The networking team took an active part in the project iteration (PI) planning","date":"2022-08-12T00:00:00.000Z","formattedDate":"August 12, 2022","tags":[{"label":"network","permalink":"/cardano-updates/tags/network"}],"readingTime":0.88,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-08-12-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Team Update","permalink":"/cardano-updates/2022-08-31-consensus"}},"content":"```mdx-code-block\\nimport  ReactPlayer from \'react-player\'\\n```\\n\\n\\nThe networking team took an active part in the project iteration (PI) planning\\nsession, see cardano-node [backlog](https://github.com/orgs/input-output-hk/projects/39) for detailed\\noutcomes.\\n\\n\\n* We started working on a detailed design / implementation plan for gossip.\\n\\n* We merged [input-output-hk/ouroboros-network#3859](https://github.com/input-output-hk/ouroboros-network/pull/3859) which\\n  sets the ouroboros-network repository for the single relay release.\\n\\n* We identified a bug in the network simulator, which is fixed in the\\n  [input-output-hk/ouroboros-network#3852](https://github.com/input-output-hk/ouroboros-network/pull/3852).\\n  The above PR was reviewed.\\n\\n* We set the tracing configuration for nodes which we deploy and fixed and\\n  identified some deployment hiccups.  We identified some bugs in the RT view\\n  which were registered by the maintainers.\\n  [input-output-hk/ouroboros-network-ops#4](https://github.com/input-output-hk/ouroboros-network-ops/pull/4)\\n\\n* We fixed typos in network-mux library:\\n  [input-output-hk/ouroboros-network#3921](https://github.com/input-output-hk/ouroboros-network/pull/3921)\\n\\n* For easy of debugging we renamed a trace point:\\n  [input-output-hk/ouroboros-network#3922](https://github.com/input-output-hk/ouroboros-network/pull/3922)\\n\\n* Duncan iterated on his simulation / visualisation.  He also was able to\\n  identify and fix a bug in the simulator.  The simulation contains 50 nodes.\\n  Dashed lines indicate and established connection, while solid lines indicate\\n  a TCP connection with fully open TCP window.\\n\\n```mdx-code-block\\n<ReactPlayer playing controls url=\'/p2p-relay3.mp4\' />\\n```"}]}')}}]);
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d(e){let{components:t,...a}=e;return(0,n.kt)(c,(0,i.Z)({},s,a,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,n.kt)("p",null,"The SRE team is heavily working on the Equinix Metal migration, replacing Hydra\nwith Cicero, and a new version of Spongix."),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h3",{id:"openziti"},"OpenZiti"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Work is ongoing on our OpenZiti integration into Bitte in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/bitte/compare/zt"},"bitte-zt"),"]."),(0,n.kt)("li",{parentName:"ul"},"CI-World deployment of Darwin CI Ziti service in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994"},"ci-world-commit-d40f4d"),"]."),(0,n.kt)("li",{parentName:"ul"},"Multiple issues filed, and a lot of discussion with the OpenZiti developers,\nwe're making pretty rapid progress thanks to them."),(0,n.kt)("li",{parentName:"ul"},"Work on getting Equinix baremetal machines integrated into AWS World Bitte\nclusters utilizing a Ziti ZTNA network overlay to bridge the networking of\nthe two environments and get IAM extension to Equinix machine for Nomad\nclient onboarding."),(0,n.kt)("li",{parentName:"ul"},"A Nix Flake for most of our OpenZiti dependencies including the Console,\nController, Edge Tunnel, and Router is now at [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/johnalotoski/openziti-bins"},"openziti-bins"),"]."),(0,n.kt)("li",{parentName:"ul"},"The Flake also includes a WiP NixOS modules for these components."),(0,n.kt)("li",{parentName:"ul"},"Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with\nno issues seen so far"),(0,n.kt)("li",{parentName:"ul"},"Moved the console to traefik routing service (",(0,n.kt)("inlineCode",{parentName:"li"},"zac.$DOMAIN"),") and\ncontroller/edge router stay at 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We held a session with the consensus & the\nscientists; we got a positive feedback on the design."),(0,a.kt)("p",null,"Further we focused on implementation of peer sharing.  We produced a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan"},"detail\ndesign")," and an ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"early implementation"),"."),(0,a.kt)("p",null,"We prepared the ",(0,a.kt)("em",{parentName:"p"},"P2P Single Relay Release")," (",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-node-1.35.5"),").  It\nincludes over ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4120"},"130 patches")," of network stack improvements over the\nprevious version ",(0,a.kt)("inlineCode",{parentName:"p"},"1.35.4"),", which were accomplished over a longer period of\ntime.  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For an SPO\ntracking these demotion is vital (such demotion could indicate that a block\nproducer is no longer connected to its relays or vice versa)")),(0,a.kt)("p",null,"We also provide better integration with ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3979"},"systemd")," (socket\nactivation improvements) or improvements in the networking stack:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3785"},"exit policies"),","),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3915"},"peer metrics improvements"),","),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4106"},"DNS TTL")," improvements (which make it harder to misconfigure the\nsystem, an issue discovered by the performance & monitoring team),"),(0,a.kt)("li",{parentName:"ul"},"do not trigger inbound idle timeout for ",(0,a.kt)("inlineCode",{parentName:"li"},"node-to-client")," connections (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3844"},"pr\n#3844"),"), an issue reported to us by Matthias Benkort from\nCardano Foundation.")),(0,a.kt)("p",null,"Duncan has been making progress with the input endorsers demo. His simulation\nprovides a useful animated visualisation and live quantification of behaviour\nof the modeled design."),(0,a.kt)("p",null,"We also improved our e2e diffusion simulation by implementing header-body\nsplit, similar to what the real implementation does."),(0,a.kt)("p",null,"We also made some advances towards our future goals of P2P release for block\nproducer nodes (",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3800"},"pr #3800")," - in review) & for Daedalus users\n(",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3968"},"pr #3690")," - merged)."),(0,a.kt)("h3",{id:"detailed-log"},"Detailed log"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We expanded diffusion simulation with block-fetch protocol bringing it closer\nto the production system.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We addressed some additional technical depth in diffusion simulation")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We slightly improved documentation & CI of io-sim and typed-protocols\nrepositories for open-source contributors.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We closed a number of issues towards publishing io-sim on Hackage (only two\nessential issues are left open).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We pushed a branch of typed-protocols which captures one of the developer UX\nproblems in the API which we need to solve.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and fixed an issue related to systemd sockets.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and fixed an issue in consensus initialisation not giving\nfeedback on early errors.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We deployed RT View, identified a number of issues which were communicated to\nthe performance & monitoring team.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We finished high level & detailed design of peer sharing, very early\nimplementation of peer sharing is done (note that peer sharing cannot be\nsafely deployed without eclipse evasion & genesis).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We finished high level design of eclipse evasion, and started working on\na detailed design.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We were assigned the role of release engineer for 1.35.5 release (the P2P\nsingle relay release); we prepared a cardano-node for 1.35.5 release which\ncontains more than 130 patches of just network stack improvements done over\nlast few months.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We diagnosed and fixed an tricky bug in the peer state actions (a component\nwhich sits between outbound governor and connection manager). That bug was\nintroduced earlier this year and never released. It was caught by the QA\ntesting framework. We expanded our diffusion simulation to cover such case and\nalso mitigated a chance for reintroducing such a bug in future.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and quite likely mitigated a misconfiguration in the\nbenchmarking cluster (next benchmarking run will confirm our hypothesis).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We simplified the format of p2p topology file, we got positive feedback from\nSPOs.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We raised severities of some of the logging messages, which is an important\nimprovement for SPOs, exchanges and other users of the system.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We worked on input endorsers simulation which gives both animated and\nquantified live feedback on network operation, using a simplified model of\na TCP/IP network. 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QA & benchmarking\nteams gave a green light for the release, and we made decent progress with some\nCI problem which we encountered on the way (",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4612"},"PR #4612"),"). We are also working on\npeer sharing, making improvements in our testing infrastructure, reducing\ntechnical debt and making progress towards ",(0,a.kt)("inlineCode",{parentName:"p"},"io-sim-1.0.0.0"),". Galois is making\nprogress on Handshake improvements."),(0,a.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,a.kt)("p",null,"Our diffusion simulation network now includes a mixed network of ",(0,a.kt)("inlineCode",{parentName:"p"},"initiator\nonly")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"initiator and responder")," nodes. 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This feature is useful for two reasons: makes it easier to maintain\na topology file, it will also limit the traffic on public roots generated by\nfor example full node wallets and distribute it to ledger peers."),(0,r.kt)("p",null,"We also continued to work on a blog post which describes the journey of design\n& implementation of the dynamic P2P network layer.  Too be announced soon :).  "),(0,r.kt)("h3",{id:"other-smaller-changes"},"Other smaller changes"),(0,r.kt)("p",null,"We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger\npeers DNS names are resolved concurrently, and at most 2 local root peer DNS\nnames. 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",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3308"},"pull-3308"),"."),(0,n.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We cleaned up the redeemer serialization code (to prevent future mistakes). 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2023-03"),(0,o.kt)("h3",{id:"main-achievements"},"Main achievements"),(0,o.kt)("h4",{id:"gradual-dynamic-p2p-release-on-mainnet"},"Gradual dynamic P2P release on mainnet"),(0,o.kt)("p",null,"We released two version of ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-node")," with dynamic P2P capabilities:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6"},(0,o.kt)("inlineCode",{parentName:"a"},"1.35.6")),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"we found and fixed a bug in exception handling in ",(0,o.kt)("inlineCode",{parentName:"li"},"peer-state-actions"),(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4357"},"pull-4357")),(0,o.kt)("li",{parentName:"ul"},"we found and fixed a busy loop when demoting a peer from hot to warm ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4385"},"pull-4385")," "))),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7"},(0,o.kt)("inlineCode",{parentName:"a"},"1.35.7")),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"includes interoperability in the legacy non-p2p network stack ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/outoboros-network/pull/4467"},"pull-4467")))),(0,o.kt)("li",{parentName:"ul"},"we fixed a busy loop of demotion & promotions: ",(0,o.kt)("inlineCode",{parentName:"li"},"warm -> hot -> warm"),"[pull-4485]"," /it will be included in ",(0,o.kt)("inlineCode",{parentName:"li"},"cardano-node-8.0.0")," release/.")),(0,o.kt)("p",null,"Currently there are more than 200 P2P relays on mainnet."),(0,o.kt)("h4",{id:"peer-sharing"},"Peer Sharing"),(0,o.kt)("p",null,"We implemented /peer sharing/ ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"pull-4019")," which will be available as an\nexperimental feature in one of the future ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-node")," releases."),(0,o.kt)("p",null,"We implemented /light peer sharing/, e.g. adding inbound connections to the set\nof known peers of the outbound governor, which allows to bootstrap relays not\nregistered on chain.  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We are in the process of extending\nour test suite to cover new implementation details: ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3886"},"issue-3886"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/outoboros-network/pull/4462"},"pull-4462"),"."),(0,o.kt)("h4",{id:"cardano-network-service-assurance"},"Cardano Network Service Assurance"),(0,o.kt)("p",null,"Galois has been making progress on ",(0,o.kt)("em",{parentName:"p"},"Cardano Network Service Assurance")," project."),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"In cardano-node, they have developed a ",(0,o.kt)("inlineCode",{parentName:"p"},"datapoint")," abstraction that creates\na queue of (existing) log events, they now have two such ",(0,o.kt)("inlineCode",{parentName:"p"},"datapoint"),"s (of log\nevents) implemented.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"They have developed a ",(0,o.kt)("inlineCode",{parentName:"p"},"datapoint"),' client executable that can connect to a node\nwhich serves the "new tracing".')),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"They have been exploring approaches for the consolidation and analysis of\n",(0,o.kt)("inlineCode",{parentName:"p"},"datapoint")," data to extract actionable network health status."))),(0,o.kt)("h4",{id:"cardano-node"},"Cardano-Node"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We made it possible to configure accepted connections limit ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4902"},"pull-4902"),".")),(0,o.kt)("h4",{id:"testing-improvements"},"Testing improvements"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We fixed a bug in network simulation implementation of TCP simultaneous open ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4265"},"pull-4265"),".")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We introduced header-body split in the diffusion simulation ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/outoboros-network/pull/4419"},"pull-4419")," (in review).")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We introduced initiator only nodes in the diffusion simulation ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4280"},"pull-4280"),".")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We fixed a connection-manager test failure ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4370"},"issue-4370"),"."))),(0,o.kt)("h4",{id:"technical-debt"},"Technical Debt"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We refactored ",(0,o.kt)("inlineCode",{parentName:"p"},"Snocket")," interface decoupling it from the multiplexer\n",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4260"},"pull-4260"),". This simplified some aspects of the KES agent implementation.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We introduces a record for CBOR codecs which are used for various data\nstructures by mini-protocol codecs ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/outoboros-network/pull/4430"},"pull-4430"),"."))),(0,o.kt)("h4",{id:"documentation"},"Documentation"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We explained some limitations of CDDL in our technical report ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4351"},"pull-4351"),".")),(0,o.kt)("h4",{id:"io-sim"},"IO-Sim"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We fixed implementation of ",(0,o.kt)("inlineCode",{parentName:"li"},"MVar"),"'s ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/70"},"pull-70"),".")),(0,o.kt)("h4",{id:"nothunks"},"NoThunks"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We published a new version of ",(0,o.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/nothunks"},(0,o.kt)("inlineCode",{parentName:"a"},"nothunks"))," library to Hackage.")),(0,o.kt)("h3",{id:"next-steps"},"Next steps"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Finish implementation & testing of eclipse evasion ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3886"},"issue-3886"),"."),(0,o.kt)("li",{parentName:"ul"},"Optimise connectivity to peers behind firewall ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4381"},"issue-4381"),"."),(0,o.kt)("li",{parentName:"ul"},"Finish the work on enabling block production dynamically to allow using P2P\non block producers ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3159"},"issue-3159"),"."),(0,o.kt)("li",{parentName:"ul"},"If time permits we would like also to reserve some time for finishing\npublication of ",(0,o.kt)("inlineCode",{parentName:"li"},"io-sim")," to Hackage.")))}c.isMDXComponent=!0}}]);
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",(0,a.kt)("inlineCode",{parentName:"li"},"mainnet")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/767"},"#767"),":",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Enhance terraform infrastructure")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/930"},"#930")))),(0,a.kt)("li",{parentName:"ul"},"Completed the epic that implements the computation of the stake distribution for ",(0,a.kt)("inlineCode",{parentName:"li"},"mainnet")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/880"},"#880"),":",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Check performance impact of new stake distribution command on the 'mainnet'")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/962"},"#962")))),(0,a.kt)("li",{parentName:"ul"},"Worked on the epic ",(0,a.kt)("inlineCode",{parentName:"li"},"Prepare Mithril Signer deployment model for SPO")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/862"},"#862"),":",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Design recommended deployment model for SPOs on 'mainnet' and  'preview'/'preprod'")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/961"},"#961")))),(0,a.kt)("li",{parentName:"ul"},"Worked on bugs and optimizations:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Aggregator does not always detect new immutable file")," 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Code ready for audit."),(0,n.kt)("li",{parentName:"ul"},"cardano-base: BLS12-381's PR approved, only blocker is Windows' CI. Preparing extensive testing strategy together with Plutus and Testing teams."),(0,n.kt)("li",{parentName:"ul"},"KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing."),(0,n.kt)("li",{parentName:"ul"},"Sidechains: Preparing proving system to use the curves needed for main-net PoC.  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In the\nlast update, we informed about a performance regression, but it turns out it\nonly affects block producers, and thus we highly advise against running it on\nsuch nodes.  Further investigation is required to find the cause of it."),(0,o.kt)("p",null,"On IOG's benchmarking cluster we have seen quite a good performance improvement\non block propagation itself.  The cluster is running a static topology with\nvalency 6 (each node is connected to 6 other nodes).  In which every of the 50\nnodes are block producers.  The setup of this network is the same as mainnet.\nWe've seen 40-50% performance improvement on block propagation comparing to the\nsame cluster deployed with the same topology but using non-P2P nodes.  We think\nthis performance improvement is caused by using full duplex connections.  Quite\nlikely the transaction traffic floating in both directions on the same TCP\nconnection helps to keep the TCP window open.  Note that in a cluster of 50\nnodes with valency 6 the probability of having at least one duplex connection\nis more than 50%.  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summary"),(0,r.kt)("h3",{id:"finishing-the-deposit-tracking"},"Finishing the deposit tracking"),(0,r.kt)("p",null,"The initial work on the individual deposit tracking project focused only on correctness.\nAs this is a large data structure\n(since its size is linear with respect to the number of registered stake credentials),\nit is very important that we also reduce the memory overhead as much as possible.\nFortunately, we were able to add very little overhead for the deposits by using existing\nefficient data structures. The extra tracking now only incurs one word (8 bytes)\nper registered stake credential."),(0,r.kt)("p",null,"See:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3195"},"pull-3195")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3202"},"pull-3202")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3217"},"pull-3217"))),(0,r.kt)("h3",{id:"new-conway-era-transaction"},"New Conway era transaction"),(0,r.kt)("p",null,'We implemented the Conway era transaction body, which is in line with CIP-1694.\nNote that the Conway era implements, losing speaking, the parts of CIP-1694 that are not\nrelated to the liquid democracy (the "DReps").\nThe new transaction body adds the new governance actions and votes,\nwhile also deprecating the old governance structures\n(i.e. the old protocol parameter updates and MIR certificates).'),(0,r.kt)("p",null,"We also now have the wire specification (CDDL file) and serialization code in place.\nThe wire specification is still subject to change while we work on the Conway era,\nbut it is now usable and has proper testing support\n(so that, for example, the serialization round-trips, etc)."),(0,r.kt)("p",null,"See:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3176"},"pull-3176")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3226"},"pull-3226"))),(0,r.kt)("h3",{id:"optimizing-the-tickf-transition"},"Optimizing the ",(0,r.kt)("inlineCode",{parentName:"h3"},"TICKF")," transition"),(0,r.kt)("p",null,"Every since the release of the Shelley era, we have been working to reduce the computational load\nplaced on the node by the ledger at the epoch boundary.\nWhile still not perfect, we believe that we have removed one of the final problematically long\nepoch boundary computations that exacerbate situations like\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/issues/4421"},"this"),".\nIn particular, the problem involved the way in which the consensus layer obtains a view of the\nledger for the purposes of checking the leadership schedule in a new epoch.\nWe implemented a stopgap measure which now only incurs a single multi-second cost once per epoch\ninstead of potentially several multi-second costs while the networks waits for the first block\nof a new epoch to be minted."),(0,r.kt)("p",null,"See:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"An ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md"},"ADR")," about the decision."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3209"},"pull-3209"))),(0,r.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"We closed the year out with a lot of reduction to the technical debt!"),(0,r.kt)("h4",{id:"improved-ledger-event"},"Improved ledger event"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3212"},"pull-3212")," - The ledger events are not guaranteed to appear in any given order within a block.\nFor this reason, motivated by the use case in db-sync, the ",(0,r.kt)("inlineCode",{parentName:"li"},"TotalDeposits")," event now\nincludes a transaction ID and emits the ",(0,r.kt)("em",{parentName:"li"},"change")," in deposits instead of the value.")),(0,r.kt)("h4",{id:"improved-type-saftey"},"Improved type saftey"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3208"},"pull-3208")," - We replaced ",(0,r.kt)("inlineCode",{parentName:"li"},"NominalDiffTime")," with a newtype wrapper. The problem was that our CBOR\nencoders and decoders were using the wrong level of precision, having to due with with\nthe Shelley genesis file. We removed the potential problem with a newtype wrapper."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3167"},"pull-3167")," - We now use a GADT to ensure consistency of the Plutus language in the types\nfor ",(0,r.kt)("inlineCode",{parentName:"li"},"TransactionScriptFailure")," and ",(0,r.kt)("inlineCode",{parentName:"li"},"PlutusDebug"),".")),(0,r.kt)("h4",{id:"codemodule-organization"},"Code/Module organization"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3175"},"pull-3175")," - The Allegra and Mary eras had an unusual relationship in our codebase,\ndue to the uncertainly of release dates while we were implementing them.\nIn particular, they were coupled in way that is different from the rest of the code base.\nWith hindsight on our side, we split the combined ",(0,r.kt)("inlineCode",{parentName:"li"},"shelley-ma")," Haskell package into two\nseparate ledger era packages, which is now consistent with the rest of the repository\nand module structure."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3184"},"pull-3184")," - We created a core test sub-library, cleaning up a lot of our property test\ngenerator code."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3210"},"pull-3210")," - We moved the ",(0,r.kt)("inlineCode",{parentName:"li"},"KeyPair")," type to the test library. Outside of testing,\nthe ledger does not need to deal with signing keys, and since this is a topic that\ndeserves the utmost care, it is best to make it clear that our use of signing keys\nis only for testing."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3229"},"pull-3229")," - We split the ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.Alonzo.Data")," module, which is more consistent with the rest\nof the codebase.")),(0,r.kt)("h4",{id:"revert-pointer-address-deprecation"},"Revert pointer address deprecation"),(0,r.kt)("p",null,"Thanks to one of our excellent internal auditors,\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/jmhrpr"},"@jmhrpr"),",\nwe now have a better plan for deprecating pointer addresses.\nThis meant that we had to revert the previous work to deprecate them."),(0,r.kt)("p",null,"See:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3161"},"issue-3161")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3215"},"pull-3215"))),(0,r.kt)("h4",{id:"miscellaneous"},"Miscellaneous"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3205"},"pull-3205")," - We removed deprecated type synonyms."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3218"},"pull-3218")," - We cleaned up the address deserialization."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3223"},"pull-3223")," - We fixed faulty address deserialization tests."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3222"},"pull-3222")," - We switched to a general type family ",(0,r.kt)("inlineCode",{parentName:"li"},"TxOut")," from concrete ones,\nreducing many constraints."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3224"},"pull-3224")," - ",(0,r.kt)("inlineCode",{parentName:"li"},"ShelleyGenesis")," is now parameterized by crypto instead of by era."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3170"},"pull-3170")," - We set the cabal-version to 3.0 in our projects."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3172"},"pull-3172")," - We removed the now useless ",(0,r.kt)("inlineCode",{parentName:"li"},"EncodeMint"),"/",(0,r.kt)("inlineCode",{parentName:"li"},"DecodeMint")," classes."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3225"},"pull-3225")," - We switch from ",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/ormolu"},"ormolu")," to\n",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/fourmolu"},"fourmolu"),".\nThe reason was to be able to finally have more diff friendly code!")))}h.isMDXComponent=!0}}]);
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They also worked on implementing ',(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md"},"ADR21")," related to bounded tx validity which is now under review. ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/obsidiansystems/hydra-pay"},"HydraPay")," project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue"},"issues")," they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced."),(0,n.kt)("h2",{id:"what-did-the-team-achieve-this-week"},"What did the team achieve this week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Document model based testing ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/194"},"#194")," & ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/641"},"#641")),(0,n.kt)("li",{parentName:"ul"},"Got ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md"},"ADR21"),", reducing gaps between implementation and specification, under review."),(0,n.kt)("li",{parentName:"ul"},"Complete review on ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-tutorial"),"."),(0,n.kt)("li",{parentName:"ul"},"Complete first round of review on ",(0,n.kt)("inlineCode",{parentName:"li"},"HydraPay")," work ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/634"},"#634")),(0,n.kt)("li",{parentName:"ul"},"Meeting with ",(0,n.kt)("inlineCode",{parentName:"li"},"Director of CyberSecurity")," frio ",(0,n.kt)("inlineCode",{parentName:"li"},"IOG"),' to unblock "the RFP prepared for the external audit" ',(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/606"},"#606")),(0,n.kt)("li",{parentName:"ul"},"Remove ",(0,n.kt)("inlineCode",{parentName:"li"},"vasil-dev")," and ",(0,n.kt)("inlineCode",{parentName:"li"},"testnet")," from ",(0,n.kt)("inlineCode",{parentName:"li"},"smoke-test")," because they were not working ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/630"},"#630")),(0,n.kt)("li",{parentName:"ul"},"Fix flaky ",(0,n.kt)("inlineCode",{parentName:"li"},"plutus-merkle-tree")," test ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/642"},"#642")),(0,n.kt)("li",{parentName:"ul"},"Refactor ",(0,n.kt)("inlineCode",{parentName:"li"},"NetworkSpec")," to improve legilibility."),(0,n.kt)("li",{parentName:"ul"},"Fix benchmark cost for ",(0,n.kt)("inlineCode",{parentName:"li"},"abortTx")," ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/631"},"#631")),(0,n.kt)("li",{parentName:"ul"},"Adapt ",(0,n.kt)("inlineCode",{parentName:"li"},"nix.conf")," to the recent hydra-ci nix cache migration.")),(0,n.kt)("h2",{id:"what-are-the-goals-of-next-week"},"What are the goals of next week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Get ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md"},"ADR21")," accepted & close tx validity gap in our implementation."),(0,n.kt)("li",{parentName:"ul"},"Integrate the ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-tutorial"),"."),(0,n.kt)("li",{parentName:"ul"},"Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec."),(0,n.kt)("li",{parentName:"ul"},"Get Cicero (new CI) working."),(0,n.kt)("li",{parentName:"ul"},"Use reference inputs to reduce the cost of the ",(0,n.kt)("inlineCode",{parentName:"li"},"commitTx"),".")))}h.isMDXComponent=!0}}]);
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c(e){let{components:t,...a}=e;return(0,o.kt)(u,(0,r.Z)({},d,a,{components:t,mdxType:"MDXLayout"}),(0,o.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,o.kt)("p",null,"The SRE team continues work on cardano environment improvements and general environment maintenance."),(0,o.kt)("p",null,"Some notable recent changes, updates or improvements include:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"The cardano-node nixos service now supports SIGHUP p2p topology reloading when the ",(0,o.kt)("inlineCode",{parentName:"li"},"useSystemdReload")," option is enabled")),(0,o.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,o.kt)("h3",{id:"capkgs"},"Capkgs"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Update cardano-db-sync and offchain-metadata-tools package paths and/or references: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f"},"capkgs-compare"))),(0,o.kt)("h3",{id:"cardano-node"},"Cardano-node"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/5537"},"cardano-node-pull-5537"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Creates a useSystemdReload bool option for the cardano-node nixos service"),(0,o.kt)("li",{parentName:"ul"},"This will move the topology file(s) to ",(0,o.kt)("inlineCode",{parentName:"li"},"/etc/cardano-node/topology-$i.yaml")," and inject systemd reload hooks for p2p configured cardano-node instances"),(0,o.kt)("li",{parentName:"ul"},"Moving topology files to ",(0,o.kt)("inlineCode",{parentName:"li"},"/etc")," also allows for manual topology updates when a quick test is needed and full service re-deployment isn't desired")))),(0,o.kt)("h3",{id:"cardano-parts"},"Cardano-parts"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Adds a metadata server profile and a number of other features and improvements: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-parts/pull/20"},"cardano-parts-pull-20"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds a new metadata-service profile"),(0,o.kt)("li",{parentName:"ul"},"Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile"),(0,o.kt)("li",{parentName:"ul"},"Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster's static needs, with each cached behind varnish"),(0,o.kt)("li",{parentName:"ul"},"Adds extra node list producers and public producers for cardano-node-topology profile"),(0,o.kt)("li",{parentName:"ul"},"Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch"),(0,o.kt)("li",{parentName:"ul"},"Adds select systemd metrics reporting to grafana-agent profile"),(0,o.kt)("li",{parentName:"ul"},"Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS"),(0,o.kt)("li",{parentName:"ul"},"Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it"),(0,o.kt)("li",{parentName:"ul"},"Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo"),(0,o.kt)("li",{parentName:"ul"},"Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation"),(0,o.kt)("li",{parentName:"ul"},"Adds support for grafana recording rules in the template files"),(0,o.kt)("li",{parentName:"ul"},"Improves cardano-group profile handling of producers with respect to multiple instance nodes"),(0,o.kt)("li",{parentName:"ul"},"Improves grafana-agent profile metrics handling for multi-instance cardano-node servers"),(0,o.kt)("li",{parentName:"ul"},"Improves smash service preStart handling while waiting for a node socket"),(0,o.kt)("li",{parentName:"ul"},"Updates Justfile for ERA_CMD demo support"),(0,o.kt)("li",{parentName:"ul"},"Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates"),(0,o.kt)("li",{parentName:"ul"},"Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile"),(0,o.kt)("li",{parentName:"ul"},"Defaults cardano-postgres profile psqlrc use to false")))),(0,o.kt)("h3",{id:"cardano-playground"},"Cardano-playground"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Adds a new testnet metadata server, cluster webserver, and other improvements: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-playground/pull/6"},"cardano-playground-pull-6"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds a new metadata server"),(0,o.kt)("li",{parentName:"ul"},"Adds a new webserver for the cluster's static virtualhost needs"),(0,o.kt)("li",{parentName:"ul"},"Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo"),(0,o.kt)("li",{parentName:"ul"},"Adds systemd metrics monitoring to the cluster"),(0,o.kt)("li",{parentName:"ul"},"Resizes sanchonet machines to support the growing chain"),(0,o.kt)("li",{parentName:"ul"},"Completes migration of preprod from world"),(0,o.kt)("li",{parentName:"ul"},"Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes"),(0,o.kt)("li",{parentName:"ul"},"Updates Justfile for ERA_CMD demo support"),(0,o.kt)("li",{parentName:"ul"},"Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile"),(0,o.kt)("li",{parentName:"ul"},"Migrates book static code to playground from world, with refactor, cleanup and updates"),(0,o.kt)("li",{parentName:"ul"},"Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules")))),(0,o.kt)("h3",{id:"offchain-metadata-tools"},"Offchain-metadata-tools"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Adds db password option with obfuscation plus misc improvements: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/offchain-metadata-tools/pull/61"},"offchain-metadata-tools-pull-61"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services"),(0,o.kt)("li",{parentName:"ul"},"Updates the nixos service for metadata-webhook service to optionally use an 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",(0,r.kt)("em",{parentName:"p"},"Big ledger peers")," are the\nlargest ledger peers which accumulate 90% of stake (currently there are less\nthan 1000 of them).  The outbound governor has new targets for ",(0,r.kt)("em",{parentName:"p"},"known"),",\n",(0,r.kt)("em",{parentName:"p"},"established")," and ",(0,r.kt)("em",{parentName:"p"},"active")," big ledger peers which work in a similar way that\nsuch targets work for ledger peers.  The ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4662"},"ouroboros-network#4662")," PR is\ncurrently in review."),(0,r.kt)("p",null,"As part of this work we also identified a bug which would prevent a node to\nconnect to itself.  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Formatting of\nmessages was improved. ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4593"},"ouroboros-network#4593"))),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},(0,r.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," has a new ",(0,r.kt)("inlineCode",{parentName:"p"},"--query-versions")," flag which allows to query\nsupported versions by the remote node.  This is supported by\n",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node-8.1.0"),". ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4589"},"ouroboros-network#4589"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5313"},"cardano-node#5313"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-cli/pull/30/"},"cardano-cli#30")))),(0,r.kt)("h4",{id:"iosim"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/io-sim"},"IOSim")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We fixed timeouts & delays in ",(0,r.kt)("inlineCode",{parentName:"p"},"io-classes")," in a series of PRs: ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/81"},"io-sim#81"),",\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/82"},"io-sim#82"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/86"},"io-sim#86"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/87"},"io-sim#87"),".")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We released ",(0,r.kt)("inlineCode",{parentName:"p"},"strict-stm-1.1.0.1")," on Hackage which fixed a bug in package\ndescription file: ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/101"},"io-sim#101"),"."))),(0,r.kt)("h4",{id:"typed-protocols"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/typed-protocols"},"Typed Protocols")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We published haddocks of ",(0,r.kt)("inlineCode",{parentName:"li"},"typed-protocols")," at\n",(0,r.kt)("a",{parentName:"li",href:"https://input-output-hk.github.io/typed-protocols"},"https://input-output-hk.github.io/typed-protocols"))),(0,r.kt)("h4",{id:"cardano-client"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client"},"Cardano Client")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We fixed a bug in ",(0,r.kt)("inlineCode",{parentName:"li"},"cardano-client-0.1.0.2")," release which results in clients\n(e.g. ",(0,r.kt)("inlineCode",{parentName:"li"},"db-sync"),") negotiate an experimental protocol version.")),(0,r.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"After the split between consensus & network, we made ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-client"),"\nindependent of ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus-diffusion"),": ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4526"},"ouroboros-network#4526"),".")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We wrap all exceptions in ",(0,r.kt)("inlineCode",{parentName:"p"},"DiffusionError"),": ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4537"},"ouroboros-network#4537"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5356"},"cardano-node#5356"),"."))),(0,r.kt)("h4",{id:"ci-improvements"},"CI improvements"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We switched to use GitHub merge queues in ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-network"),", ",(0,r.kt)("inlineCode",{parentName:"p"},"io-sim")," and\n",(0,r.kt)("inlineCode",{parentName:"p"},"typed-protocols")," repositories; 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2023-03",date:"2023-04-04T00:00:00.000Z",formattedDate:"April 4, 2023",tags:[{label:"network",permalink:"/cardano-updates/quarterly/tags/network"}],readingTime:2.62,hasTruncateMarker:!1,authors:[{name:"Marcin Szamotulski",title:"Network Team Lead",url:"https://github.com/coot",imageURL:"https://github.com/coot.png",key:"coot"}],frontMatter:{title:"Network Q1 2023 Update",slug:"2023-04-04-network",authors:"coot",tags:["network"],hide_table_of_contents:!1},prevItem:{title:"Consensus Quarterly Update",permalink:"/cardano-updates/quarterly/2023-04-25-consensus"},nextItem:{title:"Ledger Team Update",permalink:"/cardano-updates/quarterly/2023-04-03-ledger"}},p={authorsImageUrls:[void 0]},u=[{value:"2023-01 - 2023-03",id:"2023-01---2023-03",level:2},{value:"Main achievements",id:"main-achievements",level:3},{value:"Gradual dynamic P2P release on mainnet",id:"gradual-dynamic-p2p-release-on-mainnet",level:4},{value:"Peer Sharing",id:"peer-sharing",level:4},{value:"Eclipse Evasion",id:"eclipse-evasion",level:4},{value:"Cardano Network Service Assurance",id:"cardano-network-service-assurance",level:4},{value:"Cardano-Node",id:"cardano-node",level:4},{value:"Testing improvements",id:"testing-improvements",level:4},{value:"Technical Debt",id:"technical-debt",level:4},{value:"Documentation",id:"documentation",level:4},{value:"IO-Sim",id:"io-sim",level:4},{value:"NoThunks",id:"nothunks",level:4},{value:"Next steps",id:"next-steps",level:3}],s={toc:u},m="wrapper";function c(e){let{components:t,...n}=e;return(0,o.kt)(m,(0,a.Z)({},s,n,{components:t,mdxType:"MDXLayout"}),(0,o.kt)("h2",{id:"2023-01---2023-03"},"2023-01 - 2023-03"),(0,o.kt)("h3",{id:"main-achievements"},"Main achievements"),(0,o.kt)("h4",{id:"gradual-dynamic-p2p-release-on-mainnet"},"Gradual dynamic P2P release on mainnet"),(0,o.kt)("p",null,"We released two version of ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-node")," with dynamic P2P capabilities:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6"},(0,o.kt)("inlineCode",{parentName:"a"},"1.35.6")),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"we found and fixed a bug in exception handling in ",(0,o.kt)("inlineCode",{parentName:"li"},"peer-state-actions"),(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4357"},"pull-4357")),(0,o.kt)("li",{parentName:"ul"},"we found and fixed a busy loop when demoting a peer from hot to warm ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4385"},"pull-4385")," "))),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7"},(0,o.kt)("inlineCode",{parentName:"a"},"1.35.7")),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"includes interoperability in the legacy non-p2p network stack ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/outoboros-network/pull/4467"},"pull-4467")))),(0,o.kt)("li",{parentName:"ul"},"we fixed a busy loop of demotion & promotions: ",(0,o.kt)("inlineCode",{parentName:"li"},"warm -> hot -> warm"),"[pull-4485]"," /it will be included in ",(0,o.kt)("inlineCode",{parentName:"li"},"cardano-node-8.0.0")," release/.")),(0,o.kt)("p",null,"Currently there are more than 200 P2P relays on mainnet."),(0,o.kt)("h4",{id:"peer-sharing"},"Peer Sharing"),(0,o.kt)("p",null,"We implemented /peer sharing/ ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"pull-4019")," which will be available as an\nexperimental feature in one of the future ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-node")," releases."),(0,o.kt)("p",null,"We implemented /light peer sharing/, e.g. adding inbound connections to the set\nof known peers of the outbound governor, which allows to bootstrap relays not\nregistered on chain.  This complements peer sharing.  The ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4277"},"pull-4277")," is in\nlate review stages."),(0,o.kt)("h4",{id:"eclipse-evasion"},"Eclipse Evasion"),(0,o.kt)("p",null,"We finalised design of eclipse evasion and we started implementing it.  We\nhave an initial implementation (not merged). 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This simplified some aspects of the KES agent implementation.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},"We introduces a record for CBOR codecs which are used for various data\nstructures by mini-protocol codecs ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/outoboros-network/pull/4430"},"pull-4430"),"."))),(0,o.kt)("h4",{id:"documentation"},"Documentation"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We explained some limitations of CDDL in our technical report ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4351"},"pull-4351"),".")),(0,o.kt)("h4",{id:"io-sim"},"IO-Sim"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We fixed implementation of ",(0,o.kt)("inlineCode",{parentName:"li"},"MVar"),"'s ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/70"},"pull-70"),".")),(0,o.kt)("h4",{id:"nothunks"},"NoThunks"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We published a new version of ",(0,o.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/nothunks"},(0,o.kt)("inlineCode",{parentName:"a"},"nothunks"))," library to Hackage.")),(0,o.kt)("h3",{id:"next-steps"},"Next steps"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Finish implementation & testing of eclipse evasion ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3886"},"issue-3886"),"."),(0,o.kt)("li",{parentName:"ul"},"Optimise connectivity to peers behind firewall ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4381"},"issue-4381"),"."),(0,o.kt)("li",{parentName:"ul"},"Finish the work on enabling block production dynamically to allow using P2P\non block producers ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3159"},"issue-3159"),"."),(0,o.kt)("li",{parentName:"ul"},"If time permits we would like also to reserve some time for finishing\npublication of ",(0,o.kt)("inlineCode",{parentName:"li"},"io-sim")," to Hackage.")))}c.isMDXComponent=!0}}]);
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the\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/formal-ledger-specifications"},"formal ledger model"),".\nBriefly, the Conway ledger era will:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"introduce SPO voting for hard forks (in the spirit of the now abandoned ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/cardano-foundation/CIPs/pull/318"},"CIP-47"),")"),(0,n.kt)("li",{parentName:"ul"},"provide an on-chain mechanism for rotating the governance keys"),(0,n.kt)("li",{parentName:"ul"},"re-plumb the ledger rules involving governance to be in line with ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/cardano-foundation/CIPs/pull/380"},"CIP-1694"))),(0,n.kt)("h3",{id:"versioned-cbor"},"Versioned CBOR"),(0,n.kt)("p",null,"We now have the ability to easily tie our serialization schemes to the Cardano\nmajor protocol version.\nWe still aim to preserve backwards compatibility as much as possible, but we now have a principled\nplan for resolving problems (see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/cardano-foundation/CIPs/pull/372"},"CIP-ledger-cbor"),").\nIn particular, we can now address several long standing issues, such as\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/2444"},"issue-2444"),", ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/2965"},"issue-2965"),", and ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/3003"},"issue-3003"),". "),(0,n.kt)("p",null,"The final (and massive!) pull request which brought us the versioning is ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3138"},"pull-3138"),"."),(0,n.kt)("h3",{id:"deposit-tracking"},"Deposit tracking"),(0,n.kt)("p",null,"The draft pull request which was exploring how best to track individual deposits\nis much closer now to being ready to take out of draft (",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3127"},"pull-3127"),").\nFor background on the issue, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/3113"},"issue-3113"),".\nThis is quite an invasive change which effects many of our tests, which we are now addressing."),(0,n.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,n.kt)("p",null,"As always, we keep working on technical debt.\nWe have deduplicated a some things: ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3129"},"pull-3129"),", ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3162"},"pull-3162"),".\nWe have memoized a problematic computation (though more due diligence is needed before we can\nmerge): ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3141"},"pull-3141"),"."),(0,n.kt)("h3",{id:"node-release"},"Node release"),(0,n.kt)("p",null,"We have been helping with the node release efforts. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4608"},"pull-4608"),"."))}h.isMDXComponent=!0}}]);
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l=r.length,o=new Array(l);o[0]=c;var i={};for(var p in t)hasOwnProperty.call(t,p)&&(i[p]=t[p]);i.originalType=e,i[h]="string"==typeof e?e:n,o[1]=i;for(var u=2;u<l;u++)o[u]=r[u];return a.createElement.apply(null,o)}return a.createElement.apply(null,r)}c.displayName="MDXCreateElement"},29632:(e,t,r)=>{r.r(t),r.d(t,{assets:()=>p,contentTitle:()=>o,default:()=>d,frontMatter:()=>l,metadata:()=>i,toc:()=>u});var a=r(87462),n=(r(67294),r(3905));const l={title:"Ledger Team Update",slug:"2023-02-17-ledger",authors:"JaredCorduan",tags:["ledger"],hide_table_of_contents:!1},o=void 0,i={permalink:"/cardano-updates/2023-02-17-ledger",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-02-17-ledger.md",source:"@site/blog/2023-02-17-ledger.md",title:"Ledger Team Update",description:"High level summary",date:"2023-02-17T00:00:00.000Z",formattedDate:"February 17, 2023",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"}],readingTime:2.33,hasTruncateMarker:!1,authors:[{name:"Jared Corduan",title:"Ledger Team Lead",url:"https://github.com/JaredCorduan",imageURL:"https://github.com/JaredCorduan.png",key:"JaredCorduan"}],frontMatter:{title:"Ledger Team Update",slug:"2023-02-17-ledger",authors:"JaredCorduan",tags:["ledger"],hide_table_of_contents:!1},prevItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2023-02-17-hydra"},nextItem:{title:"Network Team Update",permalink:"/cardano-updates/2023-02-17-network"}},p={authorsImageUrls:[void 0]},u=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Lower level summary",id:"lower-level-summary",level:2},{value:"Integration work",id:"integration-work",level:3},{value:"Technical debt",id:"technical-debt",level:3},{value:"Small documentation improvements",id:"small-documentation-improvements",level:3},{value:"Specifying CIP-1694",id:"specifying-cip-1694",level:3},{value:"Constraint based testing",id:"constraint-based-testing",level:3}],s={toc:u},h="wrapper";function d(e){let{components:t,...r}=e;return(0,n.kt)(h,(0,a.Z)({},s,r,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,n.kt)("p",null,"This past two weeks saw many months worth of ledger changes integrated with the ",(0,n.kt)("inlineCode",{parentName:"p"},"cardano-base"),"\nand ",(0,n.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," repositories.\nThe vast majority of the effort involved all the changes to the ledger serialization libraries\n(and the interplay with ",(0,n.kt)("inlineCode",{parentName:"p"},"cardano-base"),") which now support proper versioning.\nSupporting the conway ledger era, and in particular allowing the ledger state to transition\nto a whole new system of governance, also played a noticeable part in the integration."),(0,n.kt)("p",null,"Besides the integration work, the team continues to address technical debt, improve the\ndocumentation, make our testing infrastructure better (such as experimenting with better\nnightly tests), and formally specifying more parts of CIP-1694."),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h3",{id:"integration-work"},"Integration work"),(0,n.kt)("p",null,"Below is all the integration work completed, which will enable a release to node from\nthe current ledger master. Many thanks to\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/lehins"},"Alexey")," for this colossal undertaking!"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3303"},"pull-3303")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3302"},"pull-3302")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3300"},"pull-3300")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3299"},"pull-3299")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3298"},"pull-3298")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3297"},"pull-3297")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3292"},"pull-3292")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3289"},"pull-3289")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3288"},"pull-3288")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3279"},"pull-3279")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3282"},"pull-3282")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4349"},"pull-4349"))),(0,n.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,n.kt)("p",null,"Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted\nin the CBOR specification. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3241"},"pull-3241"),"."),(0,n.kt)("p",null,"We now have our ",(0,n.kt)("inlineCode",{parentName:"p"},".cabal")," files being checked for a consistent formatting given by\n",(0,n.kt)("inlineCode",{parentName:"p"},"cabal format")," in our CI. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3286"},"pull-3286"),"."),(0,n.kt)("p",null,"We are still experimenting with better nightly tests for our long running\nproperty based tests. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3276"},"pull-3276")," and ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3296"},"pull-3296"),"."),(0,n.kt)("h3",{id:"small-documentation-improvements"},"Small documentation improvements"),(0,n.kt)("p",null,"The hand proofs of the preservation ADA property have been added back to the\nShelley ledger specification. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3295"},"pull-3295"),"."),(0,n.kt)("p",null,"We have clarified how the script integrity hash is computed in the CDDL description.\nSee ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3290"},"pull-3290"),"."),(0,n.kt)("h3",{id:"specifying-cip-1694"},"Specifying CIP-1694"),(0,n.kt)("p",null,"Our new formal specifications backed by Agda have seen a lot of progress!\nUpgrading to Agda 2.6.3 fixed our main build infrastructure problems,\nand we no longer have to rely on our custom fork. See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/formal-ledger-specifications/pull/50"},"pull-50"),"."),(0,n.kt)("p",null,"Our progress on formally specifying CIP-1694 can be followed here:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"in Agda: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/formal-ledger-specifications/pull/40"},"pull-40")),(0,n.kt)("li",{parentName:"ul"},"the corresponding Haskell: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3291"},"pull-3291"))),(0,n.kt)("h3",{id:"constraint-based-testing"},"Constraint based testing"),(0,n.kt)("p",null,"We are still actively working on our new constraint based property testing framework.\nWe have nearly all of the constraints for an entire ledger state\nhooked into generators, and tests that the generators do indeed obey the constraints.\nThe variable count in the constraints is over 100!\nThere is still much work to do on shrinking, making the generators faster,\nand writing actual property tests for the ledger, but the approach still seems viable and\nwe are hopeful that it could replace our trace generators.\nThe WIP can be followed here: ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3219"},"pull-3219"),"."))}d.isMDXComponent=!0}}]);
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",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/993"},"#993")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Computation of master certificate of an epoch is incorrect")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1006"},"#1006")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"End to end tests are flaky")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/954"},"#954")),(0,a.kt)("li",{parentName:"ul"},"Worked on the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"'testing-preview' network does not create certificates")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1015"},"#1015")))),(0,a.kt)("li",{parentName:"ul"},"Worked on optimizations:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the 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",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/944"},"#944")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Reactivate Publish Results job in CI")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/978"},"#978")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Clean 'pending_snapshot' directory of aggregator")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/983"},"#983")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Update OpenAPI spec examples")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1000"},"#1000")))),(0,a.kt)("li",{parentName:"ul"},"Worked on refactoring:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue 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Karl\nKnutsson (from Cardano Foundation) reproduced this issue between two nodes (a\nnon P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed\nit and found a bug in the legacy non p2p code.  The bug is only possible to\ntrigger with a P2P node which is binding its outbound connection port to\na fixed IP address and port (default in p2p).  A possible solution was found.\nFor more information see ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4465"},"#4465"),"."),(0,r.kt)("p",null,"We released ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-ping-0.1.0.0")," package to ",(0,r.kt)("inlineCode",{parentName:"p"},"CHaP"),".  ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-ping")," is no\nlonger available as a standalone binary, but instead it will become part of\n",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-cli")," (see ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4664"},"#4664"),")"),(0,r.kt)("p",null,"We are testing ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node")," with peer sharing functionality (",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"#4019"),")."),(0,r.kt)("p",null,"We are working on ",(0,r.kt)("em",{parentName:"p"},"eclipse evasion"),".  We added new class of peers: big ledger\npeers to the outbound governor, implemented tests and fixed found issues\n(",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4462"},"#4462"),").  We also made the information if a given peer plays the role of\na big ledger peer to the mini-protocols.  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This is a very important milestone which will\nenable us to run system-level tests and benchmarks, as well as start refactoring\nand cleaning the prototype. Regarding our Genesis workstream, we elaborated a\nroadmap that gives an indication of the remaining work. We also continued our\nwork on benchmarking chain-sync-jumping. We also continued working on improving\nthe way we handle blocks from the future, and advancing the integration of the\nnew VRF and KES crypto."),(0,o.kt)("h2",{id:"workstreams"},"Workstreams"),(0,o.kt)("h3",{id:"utxo-hd-prototype"},"UTxO HD Prototype"),(0,o.kt)("p",null,"As the prototype is nearing its completion, it was important to have enough\nconfidence that we will be able to move additional parts of the ledger state\nonto disk. We worked together with the Ledger team to ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4296"},"elaborate a\nsketch")," on how the UTxO-HD design would accommodate the migration of\nadditional data from memory to disk. This gave us enough confidence that the\ncurrent architecture will be extensible in the future."),(0,o.kt)("p",null,"On the testing front, we ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4274"},"added")," property-based tests for the UTxO-HD\ntype classes. 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We\nfound a race condition in the LMDB backing store, which ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4283"},"we fixed"),".\nAfter the fix we were able to successfully run these benchmarks. The results\nwere published by ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4295"},"this pull request"),"."),(0,o.kt)("p",null,"We used our ",(0,o.kt)("inlineCode",{parentName:"p"},"db-analyser")," tool to benchmark the cost of reading keys and\nflushing values to disk. The following plot shows the duration of these disk\noperation in relation to the main ledger operations, where we can see that the\ncost of the former are comparatively low. The spike at the beginning of the\ngraph is when, at the start of the Shelley era, the ",(0,o.kt)("em",{parentName:"p"},"entire")," UTxO set is flushed\nto disk."),(0,o.kt)("p",null,(0,o.kt)("img",{alt:"UTxO-HD read and flush benchmarks",src:n(90595).Z,width:"1600",height:"800"})),(0,o.kt)("p",null,"After months of hard work adding tests for the prototype, we are ready to run\nend-to-end tests on the node, and system level benchmarks. This signals a very\nimportant milestone for the UTxO-HD workstream \ud83c\udf89."),(0,o.kt)("h3",{id:"genesis"},"Genesis"),(0,o.kt)("p",null,"We elaborated a ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md"},"high-level decomposition")," of the remaining\nwork for Genesis. We also continued benchmarking the chain-sync-jumping\nhappy-path."),(0,o.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,o.kt)("p",null,"We continued working on improving the way we handle blocks from the future."),(0,o.kt)("h3",{id:"support"},"Support"),(0,o.kt)("p",null,"We completed the mapping of ",(0,o.kt)("inlineCode",{parentName:"p"},"Crypto")," to ",(0,o.kt)("inlineCode",{parentName:"p"},"HeaderCrypto")," and body ",(0,o.kt)("inlineCode",{parentName:"p"},"Crypto"),".\n",(0,o.kt)("inlineCode",{parentName:"p"},"HeaderCrypto")," is moved to ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-protocol-tpraos"),". We created a draft ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3262"},"pull\nrequest")," to facilitate compiling consensus."))}h.isMDXComponent=!0},90595:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png"}}]);
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Thanks to these tests we were able to uncover a bug in the\nprototype. On the Genesis front, we benchmarked a different version of the\nChainSync jumping prototype to try to improve its performance, but this did not\nresult in any noticeable speedup."),(0,a.kt)("h2",{id:"high-level-status-report"},"High-level status report"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Finish the UTxO HD prototype: on track.",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We focused on increasing test coverage for the UTxO-HD prototype:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We started implementing Cadano-eras transition property-tests."),(0,a.kt)("li",{parentName:"ul"},"We started implementing state-machine property-tests for the mempool."),(0,a.kt)("li",{parentName:"ul"},"We merged the mempool rewrite."),(0,a.kt)("li",{parentName:"ul"},"We started working on state-machine tests for the backing store. This\nuncovered a bug in the range-read implementation of the LMDB backing\nstore."))))),(0,a.kt)("li",{parentName:"ul"},"Genesis: on track.",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We benchmarked a version of the Genesis ChainSync Jumping prototype that\nspreads out the ChainSync updates over a longer period of time. This did not\nresult in any noticeable speedup."),(0,a.kt)("li",{parentName:"ul"},"We investigated the overhead introduced by non-ChainSync components, but no\nconclusions could be drawn from the benchmarks we ran.")))),(0,a.kt)("h2",{id:"workstreams"},"Workstreams"),(0,a.kt)("h3",{id:"finish-the-utxo-hd-prototype"},"Finish the UTxO HD prototype"),(0,a.kt)("p",null,"We focused on increasing test coverage for the UTxO HD prototype. We also merged\nthe ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4049"},"mempool\nrewrite"),"."),(0,a.kt)("h4",{id:"era-transition-property-tests"},"Era transition property tests"),(0,a.kt)("p",null,"We started implementing ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4043"},"Cardano era transition property\ntests"),",\nwhich are needed for making sure that the ledger tables get updated in the\nright way when we move from one era to the next. There are at the moment two\nimportant transitions."),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Byron to Shelley: where all the UTxO is transferred from in-memory Byron\nstate (which has no tables) to the ledger tables of the Shelley state."),(0,a.kt)("li",{parentName:"ul"},"Shelley to Allegra: where the AVVM addresses must be deleted.")),(0,a.kt)("p",null,"We have tests for the Byron to Shelley transitions. We are working on adding\nthe remaining ones."),(0,a.kt)("h4",{id:"mempool-state-machine-tests"},"Mempool state-machine tests"),(0,a.kt)("p",null,"We started implementing ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4044"},"state-machine property tests for the\nmempool"),".\nThe mempool is currently tested via pure property tests, and use a ledger\nstate without tables. With the introduction of UTxO HD, testing the concurrent\nbehavior of the mempool became of crucial importance (eg now we have to\nacquire locks to flush the backing store). In addition, we need to test a\nledger state with tables. These needs led to the creation of a new set of\nproperty tests. In particular we aim to run parallel state-machine tests that\nexercise the mempool in a way similar to how the node would make use of it."),(0,a.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,a.kt)("p",null,"We started working on ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4081"},"state-machine tests for the backing\nstore")," that UTxO\nHD uses. The property tests uncovered errors in the range-reads implementation\nof the LMDB backing store. To facilitate fixing this bug, we made\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"changes")," to the Haskell\nLMDB bindings."),(0,a.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,a.kt)("p",null,"Prompted by previous benchmarks showing significant improvements in sync time by\nusing more capabilities, we implemented a way to spread out the ChainSync\nupdates over a larger period instead of firing them all at the same time. This\ndidn't result in a noticeable speedup."),(0,a.kt)("p",null,"We also benchmarked the prototype with CSJ disabled (such that just the dynamo\npeer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule\nout/confirm overhead by non-ChainSync (mainly BlockFetch) related components.\nThis results in era-specific behavior (speed is like the prototype in Byron, but\nlike the baseline in Shelley). This deserves a closer look in the future."),(0,a.kt)("p",null,"This diagram shows the respective syncing progress, starting at Genesis and\ncontinuing a good part into Shelley (with the dashed line indicating the\nByron-to-Shelley transition)."),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Red: baseline"),(0,a.kt)("li",{parentName:"ul"},"Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps."),(0,a.kt)("li",{parentName:"ul"},"Blue: like Green, jumps are spread out."),(0,a.kt)("li",{parentName:"ul"},"Orange: variant with no jumping, to measure unrelated overhead.")),(0,a.kt)("p",null,(0,a.kt)("img",{src:n(35555).Z,width:"654",height:"459"})))}m.isMDXComponent=!0},35555:(e,t,n)=>{n.d(t,{Z:()=>r});const r=n.p+"assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg"}}]);
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"),(0,n.kt)("li",{parentName:"ul"},"Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes"),(0,n.kt)("li",{parentName:"ul"},"cardano-base: The VRF and BLS branchs are still open and in progress"),(0,n.kt)("li",{parentName:"ul"},"KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. ")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"musig2"},"MuSig2"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We redesigned the library so that MuSig2 lib users don't need to be aware of the underlying secp256k1 library ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/31"},"PR#31")),(0,n.kt)("li",{parentName:"ul"},"We are introducing a more granular error handling mechanism ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/33"},"PR#33")),(0,n.kt)("li",{parentName:"ul"},"We rethought the API and made it more consistent with the underlying secp256k1 library ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/35"},"PR#35"))),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"The mithril crates in general will be published in crates.io, and we adapted the core library's README ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/616"},"PR#616")," "),(0,n.kt)("li",{parentName:"ul"},"We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/620"},"PR#620"))),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We've been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/341"},"PR#341")),(0,n.kt)("li",{parentName:"ul"},"SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/344"},"PR#344")),(0,n.kt)("li",{parentName:"ul"},"Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/266"},"PR#266"))),(0,n.kt)("h2",{id:"kes-agent"},"KES agent"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We keep progressing in the secure forgetting PR and resolving some bugs on memory handling ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/255"},"PR#255")),(0,n.kt)("li",{parentName:"ul"},"Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. 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n=a.length,i=new Array(n);i[0]=h;var p={};for(var u in t)hasOwnProperty.call(t,u)&&(p[u]=t[u]);p.originalType=e,p[m]="string"==typeof e?e:r,i[1]=p;for(var o=2;o<n;o++)i[o]=a[o];return l.createElement.apply(null,i)}return l.createElement.apply(null,a)}h.displayName="MDXCreateElement"},3666:(e,t,a)=>{a.r(t),a.d(t,{assets:()=>u,contentTitle:()=>i,default:()=>d,frontMatter:()=>n,metadata:()=>p,toc:()=>o});var l=a(87462),r=(a(67294),a(3905));const n={title:"Ledger Team Update",slug:"2023-09-29-ledger",authors:"lehins",tags:["ledger"],hide_table_of_contents:!1},i=void 0,p={permalink:"/cardano-updates/2023-09-29-ledger",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-09-29-ledger.md",source:"@site/blog/2023-09-29-ledger.md",title:"Ledger Team Update",description:"High level summary",date:"2023-09-29T00:00:00.000Z",formattedDate:"September 29, 2023",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"}],readingTime:2.465,hasTruncateMarker:!1,authors:[{name:"Alexey Kuleshevich",title:"Ledger Team Software Engineer",url:"https://github.com/lehins",imageURL:"https://github.com/lehins.png",key:"lehins"}],frontMatter:{title:"Ledger Team Update",slug:"2023-09-29-ledger",authors:"lehins",tags:["ledger"],hide_table_of_contents:!1},prevItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2023-09-29-hydra"},nextItem:{title:"SRE Team Update",permalink:"/cardano-updates/2023-09-29-sre"}},u={authorsImageUrls:[void 0]},o=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Low level summary",id:"low-level-summary",level:2},{value:"Conway era",id:"conway-era",level:3},{value:"Performance",id:"performance",level:3},{value:"Releasing",id:"releasing",level:3},{value:"Testing",id:"testing",level:3}],s={toc:o},m="wrapper";function d(e){let{components:t,...a}=e;return(0,r.kt)(m,(0,l.Z)({},s,a,{components:t,mdxType:"MDXLayout"}),(0,r.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,r.kt)("p",null,"Few important Conway related features were completed in this two week period:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Constitutional Committee was the last missing Conway related entity that has now been\nfully implemented."),(0,r.kt)("li",{parentName:"ul"},"Treasury withdrawals governance actions have been fixed and now behave as expected."),(0,r.kt)("li",{parentName:"ul"},"Current treasury amount supplied in the transaction is now enforced by the rules."),(0,r.kt)("li",{parentName:"ul"},"DRep's expiry is prevented by delaying the expiry for all DReps whenever there are no\nproposals to vote on."),(0,r.kt)("li",{parentName:"ul"},"Semantics of how CostModels are updated with Protocol Parameters have been changed to\nallow for individual Plutus language version updates, rather than requiring a complete\nreplacement of all CostModels")),(0,r.kt)("p",null,"Besides the new features there were also important performance and testing improvements:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"In particular stake distribution computation and native script handling received some\noptimizations."),(0,r.kt)("li",{parentName:"ul"},"New testing DSL has been implemented that drastically simplifies writing unit tests for\nledger rules."),(0,r.kt)("li",{parentName:"ul"},"Integration tests and benchmarks are now possible for Conway era because of the overhaul\nof functionality for initial funds and staking injection whenever node starts up in\nConway, while bypassing all previous eras.")),(0,r.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,r.kt)("h3",{id:"conway-era"},"Conway era"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3729"},"pull-3729")," - DRep expiry update after a contiguous set of epochs with no proposals to vote on"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3739"},"pull-3739")," - Rename some PParams to be consistent with Agda specification"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3743"},"pull-3743")," - Move DRepDistr from VState to ConwayGovState"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3746"},"pull-3746")," - Implement ",(0,r.kt)("inlineCode",{parentName:"li"},"tcTranslationContextL")," for Shelley"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3737"},"pull-3737")," - Implement EraTransition"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3749"},"pull-3749")," - Add predicate failure: current treasury value mismatch in LEDGER"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3748"},"pull-3748")," - Apply enacted treasury withdrawals"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3745"},"pull-3745")," - Constitutional Committee Ratification"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3763"},"pull-3763")," - Plutus interface improvements"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3771"},"pull-3771")," - Changed how costmodel updates are applied"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3766"},"pull-3766")," - Prevent updating protocol version with ",(0,r.kt)("inlineCode",{parentName:"li"},"PParamUpdate"))),(0,r.kt)("h3",{id:"performance"},"Performance"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3765"},"pull-3765")," - Improve native script handling"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3747"},"pull-3747")," - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3758"},"pull-3758")," - Cardano-Perf regression: UMap.size regression fix"),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3754"},"pull-3754")," - Use Alonzo-style TxOut encoder when possible")),(0,r.kt)("h3",{id:"releasing"},"Releasing"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3742"},"pull-3742")," - Update fourmolu, ghcid and hls. 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The identified tasks are to fix breaking tests, and then measure and\naddress possible performance regressions."),(0,n.kt)("h3",{id:"tech-debt"},"Tech Debt"),(0,n.kt)("p",null,"Mark Tullsen (Galois) submitted two more PRs: ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4663"},"ouroboros-network-#4663"),",\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4664"},"ouroboros-network-#4664"),".  We provided feedback on their other pull requests: ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4661"},"ouroboros-network-#4661")," and\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4660"},"ouroboros-network-#4660"),"."),(0,n.kt)("h3",{id:"p2p-adoption"},"P2P adoption"),(0,n.kt)("p",null,"In the last two weeks, there was a regression in P2P adoption concerning\nthe number of SPOs or stakes, although the number of overall P2P relays has\nincreased.  Karl Knutsson (",(0,n.kt)("a",{parentName:"p",href:"https://cardanofoundation.org/"},"Cardano Foundation"),") is investigating\nthis issue.\n",(0,n.kt)("img",{alt:"P2P relays",src:r(70480).Z,width:"2014",height:"1586"})),(0,n.kt)("p",null,"The following graphs show several different versions of relays running on the mainnet.  The\ngreen line ",(0,n.kt)("inlineCode",{parentName:"p"},"NodeToNodeVersionV10.True")," denotes P2P relays, which slowly\nincrease over time.  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A\npossible bug was identified. Work is ongoing to make sure the property-tests\ncover all the relevant cases."),(0,l.kt)("li",{parentName:"ul"},'We implemented and benchmarked the "anti-diff" prototype to speed up the UTxO\nHD functionality. Results show a rough speedup of ',(0,l.kt)("inlineCode",{parentName:"li"},"4x")," to ",(0,l.kt)("inlineCode",{parentName:"li"},"5.5x")," across\nseveral scenarios. Note that: ",(0,l.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html"},'"Data reported by ',(0,l.kt)("inlineCode",{parentName:"a"},"tasty-bench"),' is only of\nindicative and comparative significance."'),'.\nWe are investigating additional performance improvements. The "anti-diff"\nprototype and benchmarks are still pending code review.'),(0,l.kt)("li",{parentName:"ul"},"We elaborated a draft specification for the Genesis implementation and\n",(0,l.kt)("inlineCode",{parentName:"li"},"ChainSync")," jumping optimization.")),(0,l.kt)("h2",{id:"workstreams"},"Workstreams"),(0,l.kt)("h3",{id:"conway"},"Conway"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"Integration PR of the minimal Conway era (",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3962"},"Issue #3963"),", ",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3971"},"PR\n#3971"),")."),(0,l.kt)("li",{parentName:"ul"},"Discussions with Ledger revealed possible sources of confusion about which\ndata should be changed in the Conway era. As a result, a new technical debt\nissue was raised, which does not block the integration of the Conway era\n(",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3976"},"Issue #3976"),").")),(0,l.kt)("h3",{id:"utxo-hd"},"UTxO HD"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("p",{parentName:"li"},(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3954"},"Issue #3954"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests"},"branch"),": The functionality of a\nbacking store, which is the interface to the on-disk part of ledger state in\nUTxO-HD, is tested at a high level through the ",(0,l.kt)("inlineCode",{parentName:"p"},"OnDisk")," tests. However, some\nfunctionalities remain untested, e.g., reads of ranges of keys. As such, we\nhave implemented ",(0,l.kt)("inlineCode",{parentName:"p"},"quickcheck-state-machine")," tests that exercise backing stores\ndirectly. The tests are reusable for different backing store implementations\nbecause the tests are implementation-agnostic: Any backing store that conforms\nto the backing store interface can be plugged into the tests. Work is still\nongoing to label/monitor the tests, such that we can verify that interesting\ncases are being tested. Furthermore, a possible bug has been identified in the\nLMDB backing store with respect to range reads, though the bug has not been\nresolved yet.")),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("p",{parentName:"li"},(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3946"},"Issue #3946"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs"},"branch"),", ",(0,l.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3882"},"PR #3882"),': The\n"anti-diff" prototype proposes an alternative approach to keeping track of\nsequences (more specifically, ',(0,l.kt)("inlineCode",{parentName:"p"},"FingerTree"),'s) of diffs. These diff sequences\nare a component of the in-memory parts of the ledger state in UTxO-HD. Since\nthe consensus code often requires the cumulative diff of a sequence of diffs,\nthe current implementation "caches" cumulative diffs of each subtree in the\ndiff sequence. This caching allows relatively fast reconstruction of the total\ncumulative diff, but this caching proved to incur a non-negligible cost: when\nwe manipulate diff sequences through splits and appends, we force re-computing\na logarithmic number of caches. This is problematic, since we often split and\nappend in consensus: we split when we flush diffs to a backing store or when\nwe roll back blocks, and we append when pushing blocks. The new approach\nshould reduce the overhead of this caching.'),(0,l.kt)("p",{parentName:"li"},'We implemented micro-benchmarks for the "anti-diff" prototype: we\nfirst generate a sequence of commands (',(0,l.kt)("inlineCode",{parentName:"p"},"Forward"),", ",(0,l.kt)("inlineCode",{parentName:"p"},"Push"),", ",(0,l.kt)("inlineCode",{parentName:"p"},"Flush"),", or\n",(0,l.kt)("inlineCode",{parentName:"p"},"Rollback"),") through a simulation, after which we measure the performance of\napplying the commands to a diff sequence. In this context, ",(0,l.kt)("inlineCode",{parentName:"p"},"Forward")," means\nforwarding of values through a diff, whereas ",(0,l.kt)("inlineCode",{parentName:"p"},"Rollback"),' means switching to\na different fork by rolling back diffs/blocks and pushing new ones.\nMoreover, we compare the performance for the two implementations: the\n"legacy" approach, and the anti-diff approach.'),(0,l.kt)("p",{parentName:"li"},"Some preliminary results were positive, but we needed to revisit the\nbenchmark's configuration to obtain more definitive results. After a\ndiscussion with @dcoutts and the consensus team about this configuration\n(e.g., number of commands generated, choice of the security parameter ",(0,l.kt)("inlineCode",{parentName:"p"},"k"),"),\nthe benchmarks should now be closer to the realistic setting. The following\nconfiguration specifies the default configuration that is used in the\nbenchmarking code:"),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Number of commands generated: ",(0,l.kt)("inlineCode",{parentName:"li"},"10_000")),(0,l.kt)("li",{parentName:"ul"},"Security parameter ",(0,l.kt)("inlineCode",{parentName:"li"},"k"),": ",(0,l.kt)("inlineCode",{parentName:"li"},"2160")),(0,l.kt)("li",{parentName:"ul"},"Number of initial backing values: ",(0,l.kt)("inlineCode",{parentName:"li"},"100")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs deleted by a push: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs inserted by a push: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Number of key-value pairs forwarded by a forward: ",(0,l.kt)("inlineCode",{parentName:"li"},"50")),(0,l.kt)("li",{parentName:"ul"},"Probability of a large (in the range ",(0,l.kt)("inlineCode",{parentName:"li"},"[1000, 2000]"),") rollback: ",(0,l.kt)("inlineCode",{parentName:"li"},"0.05")),(0,l.kt)("li",{parentName:"ul"},"Probability of a small (in the range ",(0,l.kt)("inlineCode",{parentName:"li"},"[1, 10]"),") rollback: ",(0,l.kt)("inlineCode",{parentName:"li"},"0.95")),(0,l.kt)("li",{parentName:"ul"},"Order of commands:",(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"An equal number of forward and pushes."),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("inlineCode",{parentName:"li"},"1")," flush every ",(0,l.kt)("inlineCode",{parentName:"li"},"10")," pushes."),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("inlineCode",{parentName:"li"},"1")," rollback every ",(0,l.kt)("inlineCode",{parentName:"li"},"100")," pushes")))),(0,l.kt)("p",{parentName:"li"},"Moreover, we run four benchmark scenarios:"),(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"Default configuration"),(0,l.kt)("li",{parentName:"ul"},"Without rollbacks"),(0,l.kt)("li",{parentName:"ul"},"With only small rollbacks"),(0,l.kt)("li",{parentName:"ul"},"Without rollbacks, larger flushes (",(0,l.kt)("inlineCode",{parentName:"li"},"1")," flush every ",(0,l.kt)("inlineCode",{parentName:"li"},"100")," pushes)")),(0,l.kt)("h3",{parentName:"li",id:"how-to-read-results"},"How to read results"),(0,l.kt)("p",{parentName:"li"},"Note: this section uses documentation from the\n",(0,l.kt)("a",{parentName:"p",href:"https://hackage.haskell.org/package/tasty-bench"},"tasty-bench")," package to\nexplain how to read the results of running our benchmarks."),(0,l.kt)("p",{parentName:"li"},"Running a benchmark scenario gives us the following (curated) output:"),(0,l.kt)("pre",{parentName:"li"},(0,l.kt)("code",{parentName:"pre",className:"language-text"},"...\nAntiDiff:                               OK (18.27s)\n  2.527 s \xb1  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x\nLegacyDiff:                             OK (32.73s)\n  10.829 s \xb1 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory\n...\n")),(0,l.kt)("p",{parentName:"li"},"The output says that the first benchmark, which exercises the anti-diff\nprototype, was repeatedly executed for ",(0,l.kt)("inlineCode",{parentName:"p"},"18.27")," seconds (wall-clock time),\nits predicted mean CPU time was ",(0,l.kt)("inlineCode",{parentName:"p"},"2.527")," seconds and means of individual\nsamples do not often diverge from it further than ",(0,l.kt)("inlineCode",{parentName:"p"},"\xb1 47")," milliseconds\n(double standard deviation). We also configure the RTS to collect GC\nstatistics, which enables ",(0,l.kt)("inlineCode",{parentName:"p"},"tasty-bench")," to estimate and report memory usage.\nThis data is reported as per ",(0,l.kt)("inlineCode",{parentName:"p"},"RTSStats")," fields: ",(0,l.kt)("inlineCode",{parentName:"p"},"allocated_bytes"),",\n",(0,l.kt)("inlineCode",{parentName:"p"},"copied_bytes")," and ",(0,l.kt)("inlineCode",{parentName:"p"},"max_mem_in_use_bytes"),". So, the output of the first\nbenchmark says that a total of ",(0,l.kt)("inlineCode",{parentName:"p"},"2.1 GB")," of memory was allocated, that a\ntotal of ",(0,l.kt)("inlineCode",{parentName:"p"},"544 MB")," of memory were copied, and that the peak memory in usage\nwas ",(0,l.kt)("inlineCode",{parentName:"p"},"2.2 GB"),". We read the output for the second benchmark in the same way."),(0,l.kt)("p",{parentName:"li"},"Furthermore, the benchmark compares the mean CPU times for\nboth the anti-diff and legacy approaches: In this case, the mean CPU time\nfor the anti-diff approach is ",(0,l.kt)("inlineCode",{parentName:"p"},"~0.23x")," the mean CPU time for the legacy\napproach. Conversely, the mean CPU time for the legacy approach is\n",(0,l.kt)("inlineCode",{parentName:"p"},"1 / 0.23 ~= 4.35x")," the mean CPU time for the anti-diff approach. We will\ncall ",(0,l.kt)("inlineCode",{parentName:"p"},"0.23x")," the ",(0,l.kt)("em",{parentName:"p"},"improvement factor"),". We will call ",(0,l.kt)("inlineCode",{parentName:"p"},"4.35x")," the ",(0,l.kt)("em",{parentName:"p"},"speedup"),"."),(0,l.kt)("p",{parentName:"li"},"Note that these improvement factors (and reported results) are subject to\nnoise, randomness, the specific configuration parameters, and the whims\nof statistics. Data reported by ",(0,l.kt)("inlineCode",{parentName:"p"},"tasty-bench")," is only of indicative and\ncomparative significance."),(0,l.kt)("h3",{parentName:"li",id:"results"},"Results"),(0,l.kt)("p",{parentName:"li"},"For each of the 4 scenarios, we list the results of running the anti-diff and\nlegacy approaches 5 times. We run the benchmarks 5 times to get an indication\nof whether the results are similar across multiple runs. Furthermore, we\ncalculate the accompanying ",(0,l.kt)("em",{parentName:"p"},"ranges")," (if applicable) of improvement factors and\nspeedups."),(0,l.kt)("p",{parentName:"li"},"Note also the decrease in total bytes allocated and total bytes copied for\nthe anti-diff approach compared to the legacy approach."),(0,l.kt)("h4",{parentName:"li",id:"default-configuration"},"Default configuration"),(0,l.kt)("table",{parentName:"li"},(0,l.kt)("thead",{parentName:"table"},(0,l.kt)("tr",{parentName:"thead"},(0,l.kt)("th",{parentName:"tr",align:null},"Name"),(0,l.kt)("th",{parentName:"tr",align:null},"Mean CPU time"),(0,l.kt)("th",{parentName:"tr",align:null},"2*Stdev (CPU time)"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes allocated"),(0,l.kt)("th",{parentName:"tr",align:null},"Total bytes copied"),(0,l.kt)("th",{parentName:"tr",align:null},"Peak memory"))),(0,l.kt)("tbody",{parentName:"table"},(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.533 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"4.7 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"557 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 1: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.792 s"),(0,l.kt)("td",{parentName:"tr",align:null},"162 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.8 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.4 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.508 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"245 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"515 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 2: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.850 s"),(0,l.kt)("td",{parentName:"tr",align:null},"30 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"6.9 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.3 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: AntiDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"2.562 s (0.23x)"),(0,l.kt)("td",{parentName:"tr",align:null},"5.0 ms"),(0,l.kt)("td",{parentName:"tr",align:null},"2.1 GB"),(0,l.kt)("td",{parentName:"tr",align:null},"552 MB"),(0,l.kt)("td",{parentName:"tr",align:null},"2.2 GB")),(0,l.kt)("tr",{parentName:"tbody"},(0,l.kt)("td",{parentName:"tr",align:null},"Run 3: LegacyDiff"),(0,l.kt)("td",{parentName:"tr",align:null},"10.993 s"),(0,l.kt)("td",{parentName:"tr",align:null},"149 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In particular, this includes a proof\nsketch that the latter preserves liveness and safety in all cases (",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3964"},"Issue\n3964"),").",(0,l.kt)("ul",{parentName:"li"},(0,l.kt)("li",{parentName:"ul"},"@nfrisby's main realization during this sprint was that he had been\nfocusing so far on the case where the selected chain is an extension of\nthe intersection of our peers' ChainSync candidates."),(0,l.kt)("li",{parentName:"ul"},'This is the main case, ie an "absorbing" state, but it\'s not the only\ncase.'),(0,l.kt)("li",{parentName:"ul"},"The new proof sketch begins by case splitting on that predicate, and\nthat made the sketch quite a bit easier to follow."))),(0,l.kt)("li",{parentName:"ul"},'We continued working on the "happy path" ',(0,l.kt)("inlineCode",{parentName:"li"},"ChainSync")," Jumping prototype (",(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3960"},"Issue\n3960"),").")),(0,l.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},"We started working on the issues required to re-enable nightly CI runs..\nNightly CI runs have far more lax time constraints, which gives the option to\nrun significantly more property tests than in our regular CI. 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r=o.length,i=new Array(r);i[0]=d;var s={};for(var l in t)hasOwnProperty.call(t,l)&&(s[l]=t[l]);s.originalType=e,s[u]="string"==typeof e?e:a,i[1]=s;for(var c=2;c<r;c++)i[c]=o[c];return n.createElement.apply(null,i)}return n.createElement.apply(null,o)}d.displayName="MDXCreateElement"},45165:(e,t,o)=>{o.r(t),o.d(t,{assets:()=>l,contentTitle:()=>i,default:()=>p,frontMatter:()=>r,metadata:()=>s,toc:()=>c});var n=o(87462),a=(o(67294),o(3905));const r={title:"Initial CIP 1694 Security Analysis and Responses",slug:"2023-11-20-cip1694",authors:"kevinhammond",tags:["ledger","cip1694","security"],hide_table_of_contents:!1},i=void 0,s={permalink:"/cardano-updates/2023-11-20-cip1694",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2023-11-20-cip1694.md",source:"@site/blog/2023-11-20-cip1694.md",title:"Initial CIP 1694 Security Analysis and Responses",description:"High level summary",date:"2023-11-20T00:00:00.000Z",formattedDate:"November 20, 2023",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"},{label:"cip1694",permalink:"/cardano-updates/tags/cip-1694"},{label:"security",permalink:"/cardano-updates/tags/security"}],readingTime:5.345,hasTruncateMarker:!1,authors:[{name:"Kevin Hammond",title:"Head of Software Engineering, Cardano Core",url:"https://github.com/kevinhammond",imageURL:"https://github.com/kevinhammond.png",key:"kevinhammond"}],frontMatter:{title:"Initial CIP 1694 Security Analysis and Responses",slug:"2023-11-20-cip1694",authors:"kevinhammond",tags:["ledger","cip1694","security"],hide_table_of_contents:!1},prevItem:{title:"Mithril Team Update",permalink:"/cardano-updates/2023-11-22-mithril"},nextItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2023-11-17-hydra"}},l={authorsImageUrls:[void 0]},c=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Initial CIP-1694 Security Analysis and Responses",id:"initial-cip-1694-security-analysis-and-responses",level:2},{value:"Section: The constitutional committee",id:"section-the-constitutional-committee",level:3},{value:"Section: Size of the constitutional committee",id:"section-size-of-the-constitutional-committee",level:3},{value:"Section: Terms",id:"section-terms",level:3},{value:"Section: Registered DReps",id:"section-registered-dreps",level:3},{value:"Section: Ratification",id:"section-ratification",level:3},{value:"Section: Content",id:"section-content",level:3},{value:"Section: Protocol Parameter groups",id:"section-protocol-parameter-groups",level:3},{value:"Section: Votes",id:"section-votes",level:3},{value:"Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes",id:"section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes",level:3},{value:"Section: Changes post Edinburgh workshop (July 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We summarise the analysis and our responses here."),(0,a.kt)("h2",{id:"initial-cip-1694-security-analysis-and-responses"},"Initial CIP-1694 Security Analysis and Responses"),(0,a.kt)("h3",{id:"section-the-constitutional-committee"},"Section: The constitutional committee"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},'\u201cFor example, if we consider the hypothetical Constitution rule "The Cardano network must always be able to produce new blocks" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.')),(0,a.kt)("p",null,"There is a 'guardrails document' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-size-of-the-constitutional-committee"},"Section: Size of the constitutional committee"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.")),(0,a.kt)("p",null,"Thanks. Yes, we\u2019ve been thinking about this issue for a long time, see for example the section \u2018Final safety measure, post bootstrapping\u2019. We don\u2019t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps"),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-terms"},"Section: Terms"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"The following sentence is a bit awkward to read: \u201cFor example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d \u2014> Suggestion: \u201cFor example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.\u201d ")),(0,a.kt)("p",null,"Thanks. Yes, that suggestion is a bit easier to read."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-registered-dreps"},"Section: Registered DReps"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"\u201cAdditionally, registered DReps will need to vote regularly to still be considered active.\u201d - There is a minor issue with requiring \u201cvoting regularly\u201d. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).")),(0,a.kt)("p",null,"Thanks. We\u2019ve added a mechanism to prevent that issue in the spec/code where if there\u2019s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-ratification"},"Section: Ratification"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is a bit unclear why protocol changes: network group and technical group are two separate groups.")),(0,a.kt)("p",null,"These correspond exactly to the groups that are administered by the Parameter Committee."),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"I didn\u2019t understand the rationale for requiring 100% \u201cYes\u201d votes to pass \u201cInfo\u201d type governance actions? It seems they have the least potential to harm the system.")),(0,a.kt)("p",null,"Yes, it\u2019s not about harming the system, since ",(0,a.kt)("inlineCode",{parentName:"p"},"Info"),"\nactions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. "),(0,a.kt)("p",null,"Once an action is enacted it\u2019s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-content"},"Section: Content"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.")),(0,a.kt)("p",null,"Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-protocol-parameter-groups"},"Section: Protocol Parameter groups"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.")),(0,a.kt)("p",null,"These are existing protocol parameters, described in e.g. ",(0,a.kt)("a",{parentName:"p",href:"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time."},"https://cips.cardano.org/cips/cip9/"),"9 or ",(0,a.kt)("a",{parentName:"p",href:"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time."},"The Cardano Protocol Parameters Guide"),"."),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. ")),(0,a.kt)("p",null,"All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-votes"},"Section: Votes"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?")),(0,a.kt)("p",null,"They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don\u2019t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes"},"Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.")),(0,a.kt)("p",null,"There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire."),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-changes-post-edinburgh-workshop-july-2023"},"Section: Changes post Edinburgh workshop (July 2023)"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"\u201cAll governance actions are enacted one epoch after they are ratified.\u201d - I\u2019m not sure if this line is currently in the main body of the CIP?")),(0,a.kt)("p",null,"It is, but it is phrased differently: \u2018All governance actions are enacted on the epoch boundary after their ratification.\u2019"),(0,a.kt)("hr",null),(0,a.kt)("h3",{id:"section-reduced-deposits-for-some-government-actions"},"Section: Reduced deposits for some government actions"),(0,a.kt)("hr",null),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.")),(0,a.kt)("p",null,"Indeed. We have no plans for this at the moment."))}p.isMDXComponent=!0}}]);
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They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes."),(0,r.kt)("p",null,"Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node."),(0,r.kt)("h2",{id:"low-level-overview"},"Low level overview"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Released the new distribution ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/releases/tag/2302.0"},(0,r.kt)("inlineCode",{parentName:"a"},"2302.0"))),(0,r.kt)("li",{parentName:"ul"},"Implemented a backward/forward compatibility mechanism for API messages ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/688"},"#688"),":",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for the signer registration ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/689"},"#689")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for the signature registration ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/693"},"#693")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for epoch settings ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/695"},"#695")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for certificate pending ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/696"},"#696")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for certificate ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/697"},"#697")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for snapshots list ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/698"},"#698")),(0,r.kt)("li",{parentName:"ul"},"Implement the mechanism for snapshot ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/699"},"#699")),(0,r.kt)("li",{parentName:"ul"},"Update enforcement of API version with Semver ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/705"},"#705")))),(0,r.kt)("li",{parentName:"ul"},"Completed the PoC implementation of backward compatibility with ",(0,r.kt)("inlineCode",{parentName:"li"},"protobuf")," ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/677"},"#677")),(0,r.kt)("li",{parentName:"ul"},"Completed the PoC implementation of backward compatibility with ",(0,r.kt)("inlineCode",{parentName:"li"},"avro")," ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/678"},"#678")),(0,r.kt)("li",{parentName:"ul"},"Completed the PoC to Read/Write transaction on chain for Era activations ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/672"},"#672")),(0,r.kt)("li",{parentName:"ul"},"Completed the upgrade Cardano devnet to 1.35.4 ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/523"},"#523"))))}m.isMDXComponent=!0}}]);
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While this\nfixed the problems observed when running local benchmarks, it broke the\n",(0,r.kt)("inlineCode",{parentName:"li"},"ThreadNet")," tests due to concurrency issues. Therefore, we think it is wise to\nstart redesigning the UTxO HD mempool integration."),(0,r.kt)("li",{parentName:"ul"},"We did several rounds of code review on the alternative implementation of\ndiff-sequences required by the UTxO HD feature based on the idea of\nanti-diffs. This alternative implementation is close to being merged, and the\nnext step is to integrate this to the UTxO HD branch, so that we can run\nad-hoc replaying and syncing from scratch benchmarks and compare these with\nthe baseline. The micro-benchmarks we elaborated for the alternative\nimplementation show speedups of up to 4x, so we are optimistic about the\nperformance of replaying and syncing from scratch benchmarks, however it is\nimportant to notice that ",(0,r.kt)("em",{parentName:"li"},"due to the nature of UTxO HD")," we will still be\nslower than the baseline."),(0,r.kt)("li",{parentName:"ul"},"The final draft of the Genesis implementation specification is ready for\nreview."),(0,r.kt)("li",{parentName:"ul"},"We implemented a prototype for the happy path of Genesis' ChainSync Jumping\n(CSJ). The prototype is slower than the baseline, however it is not the latest\nversion of the prototype and the jump interval is very small."),(0,r.kt)("li",{parentName:"ul"},"Work on integrating Conway has ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031"},"stopped")," since\npriorities have changed."),(0,r.kt)("li",{parentName:"ul"},"We started work on benchmarking epoch-boundaries and epoch overhead\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4014"},"pr-4014"),". To this end, we made use of a modified version of our\n",(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," tool. We ran the new benchmarking setup using the Cardano\nmainnet chain, and we can see that block tick and application take\nsubstantially longer at epoch boundaries, although there are a couple of slots\nduring an epoch in which these computations take more than normal. We notified\nthe ledger team about these findings. We will use this modified version of\n",(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," to investigate the epoch overhead.")),(0,r.kt)("h1",{id:"workstreams"},"Workstreams"),(0,r.kt)("h2",{id:"utxo-hd"},"UTxO HD"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Spent quite some time investigating the root cause of the degradation in\nperformance observed in the benchmarks. We run the ",(0,r.kt)("inlineCode",{parentName:"p"},"make forge-stress"),"\nbenchmarks locally in order to debug this behavior."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Transaction batching doesn't make a notable difference in the outcome\n(considering we are using the in-memory backend).")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The mempool batching implementation required asynchronous transaction\nvalidation which is a violation of the ",(0,r.kt)("inlineCode",{parentName:"p"},"LocalTxSubmission")," protocol\ncontract and therefore if we continued on that route, the impact would\nhave been quite big.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The STM logic we implemented by using a ",(0,r.kt)("inlineCode",{parentName:"p"},"TMVar")," for the mempool internal\nstate was buggy and under certain circumstances it seemed to lock.\nReverting the mempool internal state to be stored in a ",(0,r.kt)("inlineCode",{parentName:"p"},"TVar")," seems to\nsolve this problem.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"The results we get after this change look almost identical to the ones\nfrom the baseline.")))),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3997"},"The anti-diff prototype (PR\n#3997)")," has\nbeen reviewed and is close to being merged."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"A follow-up issue (",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4010"},"issue\n#4010"),")\nto integrate the anti-diff prototype in the various ",(0,r.kt)("inlineCode",{parentName:"li"},"consensus"),' packages\nwas created. A first version of the integration exists, and all tests\npass. A next step is to get some indication of the "real" performance gain\nby profiling ',(0,r.kt)("inlineCode",{parentName:"li"},"db-analyser")," (or ",(0,r.kt)("inlineCode",{parentName:"li"},"cardano-node"),").")))),(0,r.kt)("h2",{id:"genesis"},"Genesis"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Final draft of the Genesis implementation specification, now up for review.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Local benchmark setup for parameter tuning via the happy path ChainSync\nJumping (CSJ) prototype (",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3987"},"Issue 3987"),")."),(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Context: Our Genesis design requires us to check in with a large (~20)\nnumber of servers periodically while syncing. These servers are offered\njump requests via the ChainSync protocol (hence the name), which they can\naccept or decline. If a peer declines, the Genesis rule allows us to\ndetermine whether a node actually has a better chain.")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},'The "happy path" is when no peer declines a jump. We want this to have\nclose to no overhead compared to status quo, i.e. syncing without Genesis.')),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We implemented a prototype for this happy path, and are now starting to\ntest in various configurations (number of peers, latency, bandwidth) to\ntune the performance of ChainSync jumping, i.e. how complicated our logic\nof choosing when to jump needs to be."),(0,r.kt)("p",{parentName:"li"},(0,r.kt)("strong",{parentName:"p"},"Example:"))),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Simulated connection: 50 MBit/s, 50ms latency")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Jump interval: 3000 slots (on the low end, could be increased to up to\n",(0,r.kt)("inlineCode",{parentName:"p"},"3k/f"),")")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Red: baseline (1.35.3), one peer in topology file")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"Blue: Preliminary version of our prototype, with 10 peers."),(0,r.kt)("p",{parentName:"li"},(0,r.kt)("img",{src:n(88213).Z,width:"654",height:"459"})),(0,r.kt)("p",{parentName:"li"},"It is slower by about ~30%, but it is not the latest version of the\nprototype, and the jump interval is very small, making CSJ more of a\nbottleneck."))))),(0,r.kt)("h2",{id:"technical-debt"},"Technical debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Fix flakiness in ChainDB QSM tests (",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3990"},"PR 3990"),").")))}m.isMDXComponent=!0},88213:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg"}}]);
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Serialization testing has been extended to increase\nbinary conformance coverage.'),(0,l.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,l.kt)("h3",{id:"conway"},"Conway"),(0,l.kt)("ul",null,(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3808"},"pull-3808")," - Enhance ",(0,l.kt)("inlineCode",{parentName:"li"},"CommitteeMembersState")," query to return quorum and NoConfidence"),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3801"},"pull-3801")," - Fix epoch rule and tests"),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3803"},"pull-3803")," - Fix delegation validation"),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3759"},"pull-3759")," - Reshuffle things to the DRepPulser incorporates some snap shot things"),(0,l.kt)("li",{parentName:"ul"},(0,l.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3779"},"pull-3779")," - 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We also worked with the Ledger team to envisage\nthe modifications that are required in Ledger and Consensus to accommodate the\nchanges in the crypto VRF and KES. The ",(0,a.kt)("inlineCode",{parentName:"p"},"db-analyser")," now supports bechmarking\nthe ledger operations, which will allow us to identify, debug, and profile\npotential performance problems. We drafted a document that defines how to manage\nthe versions of Consensus-related packages. The top level documentation of\n",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," now features a description of the consensus components and\nprovides a hyperlinked map to the modules documentation."),(0,a.kt)("h2",{id:"workstreams"},"Workstreams"),(0,a.kt)("h3",{id:"utxo-hd-prototype"},"UTxO HD prototype"),(0,a.kt)("p",null,"Whereas we had passing sequential state-machine tests for the mempool, the\nparallel case proved to be more challenging than we thought. The operation of\nadding a list of transactions to the mempool is not atomic and, as a result,\nwhen adding a list of transactions, transactions from other processes can be\nadded in between. The mempool implementation handles this correctly, however\nthis required us to ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4076"},"redesign")," the parallel model we had to take\nthe lack of atomicity into account."),(0,a.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,a.kt)("p",null,"We finished refactoring the backing store property tests. The second review\nround is ongoing."),(0,a.kt)("h3",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,a.kt)("p",null,"We are working on benchmarking (in terms of time and number of IO operations)\nfetching/looking up data from disk."),(0,a.kt)("h3",{id:"genesis"},"Genesis"),(0,a.kt)("p",null,"We worked on the design of a mechanism to prevent a DoS attack on our Genesis\ndesign related to rollbacks. This was arguably the biggest outstanding question."),(0,a.kt)("p",null,"During the discussions around Genesis, we noticed a design boundary that nicely\ndelineates a fundamental component. We almost have a full Haskell prototype of\nit. It will be very nicely self-contained, perhaps even usable in the ultimate\nimplementation!"),(0,a.kt)("h3",{id:"new-vrf-and-kes-crypto-integration"},"New VRF and KES crypto integration"),(0,a.kt)("p",null,"We collaborated with the Ledger team on preparing the ledger state and crypto\ntypes to avoid huge allocation on the epoch boundary when changing aspects of\nthe crypto that will only manifest in headers, not in the ledger states."),(0,a.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,a.kt)("p",null,"We merged the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4014"},"pull-request")," that adds a support to ",(0,a.kt)("inlineCode",{parentName:"p"},"db-analyser")," for\nbenchmarking ledger operations. This will allow us to identify, debug, and\nprofile potential performance problems. The benchmark focus on the main 5 ledger\noperations that are involved in chain syncing, block forging, and block\nvalidation, namely:"),(0,a.kt)("ol",{start:0},(0,a.kt)("li",{parentName:"ol"},"Forecast."),(0,a.kt)("li",{parentName:"ol"},"Header tick."),(0,a.kt)("li",{parentName:"ol"},"Header application."),(0,a.kt)("li",{parentName:"ol"},"Block tick."),(0,a.kt)("li",{parentName:"ol"},"Block application.")),(0,a.kt)("p",null,"The following figure shows a plot of the benchmarking results for the first 65\nmillion blocks (approximately) of the Cardano chain. The thin yellow lines under\nthe x-axis show the epoch boundaries, whereas the thick yellow lines correspond\nto the era transitions."),(0,a.kt)("p",null,(0,a.kt)("img",{src:n(2666).Z,width:"1600",height:"800"})),(0,a.kt)("p",null,"As we can see in this figure, era and epoch boundaries require more computation\ntime. The ledger team are aware of this problem, and we are working to improve\nthis situation."),(0,a.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4207"},"drafted a document")," motivating and defining how Consensus (and\npossibly other core teams) will/should manage our package versions. This\npull-request garnered many great discussions from our team members and other\nteams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et\nal. We want to thank you all for your input, and we found this discussion very\nenlightening!"),(0,a.kt)("p",null,"We merged the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4197"},"pull request")," that adds an overview of consensus to\nthe ",(0,a.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/ouroboros-network/"},"top level\ndocumentation")," of\nouroboros-network. This overview describes the consensus components and adds a\nhyperlinked map to the modules documentation."))}c.isMDXComponent=!0},2666:(e,t,n)=>{n.d(t,{Z:()=>o});const o=n.p+"assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png"}}]);
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We removed the potential problem with a newtype wrapper."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3167"},"pull-3167")," - We now use a GADT to ensure consistency of the Plutus language in the types\nfor ",(0,r.kt)("inlineCode",{parentName:"li"},"TransactionScriptFailure")," and ",(0,r.kt)("inlineCode",{parentName:"li"},"PlutusDebug"),".")),(0,r.kt)("h4",{id:"codemodule-organization"},"Code/Module organization"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3175"},"pull-3175")," - The Allegra and Mary eras had an unusual relationship in our codebase,\ndue to the uncertainly of release dates while we were implementing them.\nIn particular, they were coupled in way that is different from the rest of the code base.\nWith hindsight on our side, we split the combined ",(0,r.kt)("inlineCode",{parentName:"li"},"shelley-ma")," Haskell package into two\nseparate ledger era packages, which is now consistent with the rest of the repository\nand module structure."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3184"},"pull-3184")," - We created a core test sub-library, cleaning up a lot of our property test\ngenerator code."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3210"},"pull-3210")," - We moved the ",(0,r.kt)("inlineCode",{parentName:"li"},"KeyPair")," type to the test library. Outside of testing,\nthe ledger does not need to deal with signing keys, and since this is a topic that\ndeserves the utmost care, it is best to make it clear that our use of signing keys\nis only for testing."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3229"},"pull-3229")," - We split the ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.Alonzo.Data")," module, which is more consistent with the rest\nof the codebase.")),(0,r.kt)("h4",{id:"revert-pointer-address-deprecation"},"Revert pointer address deprecation"),(0,r.kt)("p",null,"Thanks to one of our excellent internal auditors,\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/jmhrpr"},"@jmhrpr"),",\nwe now have a better plan for deprecating pointer addresses.\nThis meant that we had to revert the previous work to deprecate them."),(0,r.kt)("p",null,"See:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3161"},"issue-3161")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3215"},"pull-3215"))),(0,r.kt)("h4",{id:"miscellaneous"},"Miscellaneous"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3205"},"pull-3205")," - We removed deprecated type synonyms."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3218"},"pull-3218")," - We cleaned up the address deserialization."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3223"},"pull-3223")," - We fixed faulty address deserialization tests."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3222"},"pull-3222")," - We switched to a general type family ",(0,r.kt)("inlineCode",{parentName:"li"},"TxOut")," from concrete ones,\nreducing many constraints."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3224"},"pull-3224")," - ",(0,r.kt)("inlineCode",{parentName:"li"},"ShelleyGenesis")," is now parameterized by crypto instead of by era."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3170"},"pull-3170")," - We set the cabal-version to 3.0 in our projects."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3172"},"pull-3172")," - We removed the now useless ",(0,r.kt)("inlineCode",{parentName:"li"},"EncodeMint"),"/",(0,r.kt)("inlineCode",{parentName:"li"},"DecodeMint")," classes."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3225"},"pull-3225")," - We switch from ",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/ormolu"},"ormolu")," to\n",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/fourmolu"},"fourmolu"),".\nThe reason was to be able to finally have more diff friendly code!")))}h.isMDXComponent=!0}}]);
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While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. 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The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB."),(0,a.kt)("li",{parentName:"ul"},"We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.")),(0,a.kt)("h3",{id:"genesis"},"Genesis"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We produced the first draft for a Survivable Eclipse Duration Model (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/422"},"422"),").")),(0,a.kt)("h3",{id:"support"},"Support"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/amesgen"},"Esgen")," finished his cycle as release engineer. 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As part of this work stream we\nidentified the key open-source repositories for the cardano project across all\nthe projects  From a list of more than 500 repositories (some of which are\nforks) we identified key repositories which constitute the core of Cardano.\n20 of them were identified as to be transferred to the future MBO which will\ngovern Cardano development.  Some where excluded (like ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim"},(0,a.kt)("inlineCode",{parentName:"a"},"io-sim"))," and\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols"},(0,a.kt)("inlineCode",{parentName:"a"},"typed-protocols")),"), to be govern by IOG, since they have a much broader\napplication than Cardano itself, and thus we think their open-source future\nwill be better outside of the Cardano umbrella."),(0,a.kt)("p",null,"Christian Taylor identified a number of ways we can improve our repositories to\nmake them more attractive for open-source contributions by analysing each of\nthem.  This includes adding or improving various documentation files, like\n",(0,a.kt)("inlineCode",{parentName:"p"},"CONTRIBUTING")," files, adding code of conduct, improving readme files, issue\n& pull request templates etc.  Christian also computed various interesting\nmetrics which gives a very good insight into the development practices: e.g.\naverage merge ratio, average number of reviews, comments and many more!  The\npresentation is available ",(0,a.kt)("a",{parentName:"p",href:"https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ"},"here"),"."),(0,a.kt)("p",null,"We followed with work on the ",(0,a.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/cardano-engineering-handbook/"},"Cardano Engineering Handbook"),".  We included\na standard code of conduct which is now used by most important projects in the\nCardano space.  We included ",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-node"),"'s security policy and added\na responsible disclosure policy.  We also described how roles and\nresponsibilities should be clarified.  This progress was made by\na collaborative effort of the Cardano Core, Plutus and Architecture teams, and\nit wouldn't be possible without Michael Peyton Jones, Arnaud Bailly, Kevin\nHammond, Jared Corduan and Marcin Szamotulski."),(0,a.kt)("p",null,"We also improved the documentation of key repositories, by adding description,\nimproving their ",(0,a.kt)("inlineCode",{parentName:"p"},"README")," file & ",(0,a.kt)("inlineCode",{parentName:"p"},"CONTRIBUTING")," files, adding code of conducts\nfollowing the ",(0,a.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/cardano-engineering-handbook/"},"Cardano Engineering Handbook"),".  This includes improvements to:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network"},(0,a.kt)("inlineCode",{parentName:"a"},"ouroboros-network"))," (both ",(0,a.kt)("inlineCode",{parentName:"li"},"network")," & ",(0,a.kt)("inlineCode",{parentName:"li"},"consensus"),")"),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger"},(0,a.kt)("inlineCode",{parentName:"a"},"cardano-ledger"))),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node"},(0,a.kt)("inlineCode",{parentName:"a"},"cardano-node")))),(0,a.kt)("p",null,"And also"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim"},(0,a.kt)("inlineCode",{parentName:"a"},"io-sim"))),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/typed-protocols"},(0,a.kt)("inlineCode",{parentName:"a"},"typed-protocols"))),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-prelude"},(0,a.kt)("inlineCode",{parentName:"a"},"cardano-prelude"))," (work in progress)")),(0,a.kt)("p",null,"The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. 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We found a memory leak in ",(0,n.kt)("inlineCode",{parentName:"p"},"typed-protocols"),"\nfunction used for testing codecs which triggered out of memory manager (OOM) on\nsome platforms (",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/43"},"typed-protocols#43"),"); we also found a bug in the connection manager which resulted in CI\n",(0,n.kt)("inlineCode",{parentName:"p"},"timeouts")," (see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680"},"connection-manager-fix"),").  "),(0,n.kt)("h3",{id:"keepalive-client"},"KeepAlive client"),(0,n.kt)("p",null,"We found two small issues with the keep-alive client, which were addressed\nby Karl Knutsson (",(0,n.kt)("a",{parentName:"p",href:"https://cardanofoundation.org/"},"Cardano Foundation"),"), ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4689"},"ouroboros-network#4689"),"."),(0,n.kt)("h3",{id:"galois"},"Galois"),(0,n.kt)("p",null,"We merged two large PRs prepared by ",(0,n.kt)("a",{parentName:"p",href:"https://galois.com/"},"Galois"),":"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4660"},"inspect ",(0,n.kt)("inlineCode",{parentName:"a"},"error")," call sites")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4663"},"implement micro benchmarks for ",(0,n.kt)("inlineCode",{parentName:"a"},"PeerMetrics")))),(0,n.kt)("h3",{id:"cardano-network-service-assurance-cnsa"},"Cardano Network Service Assurance (CNSA)"),(0,n.kt)("p",null,"Galois made the following progress on CNSA:"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"a simple ","[InfuxDB]"," database backend has been added;"),(0,n.kt)("li",{parentName:"ul"},"the documentation has been updated;"),(0,n.kt)("li",{parentName:"ul"},"internal improvements to the code;"),(0,n.kt)("li",{parentName:"ul"},'progress on a new "CSNA analysis" that provides, for each sampler node, the\nblock download throughput in bytes over time.')),(0,n.kt)("h3",{id:"new-chap-release"},"New CHaP Release"),(0,n.kt)("p",null,"We cut a new release of ",(0,n.kt)("inlineCode",{parentName:"p"},"ouroboros-netowrk")," packages to ",(0,n.kt)("inlineCode",{parentName:"p"},"CHaP"),": ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-haskell-packages/pull/547"},"chap#547")),(0,n.kt)("h2",{id:"more-details"},"More details"),(0,n.kt)("h3",{id:"ci--tests-1"},"CI / Tests"),(0,n.kt)("p",null,"We improved the memory footprint of some of our tests by analysing a stream of\n",(0,n.kt)("inlineCode",{parentName:"p"},"IOSim")," traces without retaining them, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4696"},"ouroboros-network#4696")),(0,n.kt)("p",null,"As a safety measure, we introduced an upper bound for heap memory used by test\nartefacts in our ",(0,n.kt)("inlineCode",{parentName:"p"},"nix")," tests.  We use ",(0,n.kt)("inlineCode",{parentName:"p"},"200MB")," limit for all tests except for\n",(0,n.kt)("inlineCode",{parentName:"p"},"network-mux")," tests which use ",(0,n.kt)("inlineCode",{parentName:"p"},"350MB")," limit, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4702"},"ouroboros-network#4702"),"."),(0,n.kt)("p",null,"We refactored one of our tests to use ephemeral ports thus allowing it to\nrun concurrently, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4702"},"ouroboros-network#4702"),"."),(0,n.kt)("p",null,"We merged ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4623"},"ouroboros-network#4623")," which fixes a bunch of test failures."),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4694"},"inbound-governor: connection leak")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4607"},"connection-manager: assertion failure")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4605"},"not released connection"))),(0,n.kt)("p",null,"All of them were due to a bug in test logic rather than a bug in production\ncode."),(0,n.kt)("h3",{id:"release-process"},"Release Process"),(0,n.kt)("p",null,"We updated our release process & associated scripts, see\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4705"},"ouroboros-network#4705"),"."))}m.isMDXComponent=!0}}]);
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We also\nrewrote the implementation of the mempool in the UTxO HD prototype which solved\nthe issues that prevented us from running system level benchmarks. Also on the\nUTxO HD front, we have an improved implementation of the sequence-of-differences\n(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for\nthe UTxO HD feature."),(0,a.kt)("h2",{id:"executive-summary"},"Executive summary"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"With the latest implementation of ChainSync jumping we are closer to the\nbaseline performance. In particular, the prototype seems to benefit from the\nextra concurrency provided by additional capabilities."),(0,a.kt)("li",{parentName:"ul"},"We rewrote the implementation of the mempool in the UTxO HD prototype. 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It is pending\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4036"},"review")," and\nwe also need to run replay and syncing benchmarks to confirm that this will\ndeliver a performance improvement, as observed in our micro-benchmarks."),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3944"},"The UTxO HD prototype\ninspection"),"\nresulted in a ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4045"},"list of\ntests"),"\nneeded for consensus to consider the UTxO HD prototype as fully tested.")),(0,a.kt)("h2",{id:"additional-information"},"Additional information"),(0,a.kt)("h3",{id:"genesis"},"Genesis"),(0,a.kt)("p",null,"Benchmarking setup: 50MBit/s, 50ms latency"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Red: baseline"),(0,a.kt)("li",{parentName:"ul"},"Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.")),(0,a.kt)("p",null,"As ChainSync Jumping involves many concurrent network operations at every jump,\nwe tried to run the node with 6 instead of the default 2 capabilties."),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Orange: baseline with 6 capabilities"),(0,a.kt)("li",{parentName:"ul"},"Blue: CSJ prototype with 6 capabilities")),(0,a.kt)("p",null,"This diagram shows the respective syncing progress, starting at Genesis and\ncontinuing a good part into Shelley (with the dashed line indicating the\nByron-to-Shelley transition)."),(0,a.kt)("p",null,(0,a.kt)("img",{src:n(36276).Z,width:"654",height:"459"})),(0,a.kt)("p",null,"Further work includes whether we can tune the prototype to better handle few\ncapabilities, or to adapt the default number of capabilities (potentially just\nwhile syncing)."))}m.isMDXComponent=!0},36276:(e,t,n)=>{n.d(t,{Z:()=>r});const r=n.p+"assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg"}}]);
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There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.\nOn the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.\nThe Consensus release engineer finished his rotation: version ",(0,a.kt)("inlineCode",{parentName:"p"},"8.3.0-pre")," of ",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-node")," is releasing 2023 September 5."),(0,a.kt)("h2",{id:"utxo-hd"},"UTxO-HD"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We ran the first successful system-level benchmarks for UTxO-HD (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/203"},"#203"),") using the ",(0,a.kt)("em",{parentName:"li"},"in-memory")," backend.",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot."),(0,a.kt)("li",{parentName:"ul"},"After the mempool regression is fixed the benchmarks need to be ran again."),(0,a.kt)("li",{parentName:"ul"},"System-level UTxO-HD benchmarks with the LMDB are still pending."))),(0,a.kt)("li",{parentName:"ul"},"UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/344"},"#344"),")."),(0,a.kt)("li",{parentName:"ul"},"We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in ",(0,a.kt)("inlineCode",{parentName:"li"},"GetUTxOByAddress")," (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418"},"this comment"),"). Preliminary results are promising."),(0,a.kt)("li",{parentName:"ul"},"Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/344"},"#344"),"), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.")),(0,a.kt)("h2",{id:"tech-debt"},"Tech debt"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We added tests that Consensus emits valid CBOR (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3099"},"#3099"),"). This helped us detect a couple of serialization bugs. The tests still need to be merged into the ",(0,a.kt)("inlineCode",{parentName:"li"},"main")," branch (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/323"},"#323"),").")),(0,a.kt)("h2",{id:"support"},"Support"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/nfrisby"},"Nick Frisby")," finished his release engineer rotation; ",(0,a.kt)("inlineCode",{parentName:"li"},"cardano-node 8.3.0-pre")," is releasing 2023 September 5."),(0,a.kt)("li",{parentName:"ul"},"We helped to investigate a protocol version bug in Sanchonet (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3491"},"#3491"),")."),(0,a.kt)("li",{parentName:"ul"},"We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/91"},"#91"),".")))}h.isMDXComponent=!0}}]);
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We've performed and analyzed benchmarks for node versions ",(0,r.kt)("inlineCode",{parentName:"p"},"8.2.x")," to ",(0,r.kt)("inlineCode",{parentName:"p"},"8.5")," throughout Q3."),(0,r.kt)("h4",{id:"utxo-hd-benchmarks"},"UTxO-HD benchmarks"),(0,r.kt)("p",null,"Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery."),(0,r.kt)("h4",{id:"p2p-benchmarks"},"P2P benchmarks"),(0,r.kt)("p",null,"In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature."),(0,r.kt)("h4",{id:"new-nomad-cluster"},"New nomad cluster"),(0,r.kt)("p",null,"The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received\nvarious rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest\nof our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it\nready for production use."),(0,r.kt)("h4",{id:"new-tracing-system"},"New tracing system"),(0,r.kt)("p",null,"Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that\nit is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  "),(0,r.kt)("p",null,"Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating\nend user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system."),(0,r.kt)("h4",{id:"ghc9-performance"},"GHC9 performance"),(0,r.kt)("p",null,"In Q3, a joint investigation with DevX into GHC9's behaviour revealed where and how GHC9 misses opportunities for\noptimization of generated code. 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"),(0,n.kt)("li",{parentName:"ul"},"Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures."),(0,n.kt)("li",{parentName:"ul"},"cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. "),(0,n.kt)("li",{parentName:"ul"},"KES agent: We keep progressing with KES secure forgetting implementation.")),(0,n.kt)("p",null,"We also started working in the cryptography engineering handbook, which will be a cross team effort."),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"musig2"},"MuSig2"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Merged the more granular error handling mechanism ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/33"},"PR#33"))),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d"},"Version 0.1.1"),", which was published in ",(0,n.kt)("a",{parentName:"li",href:"https://crates.io/crates/kes-summed-ed25519"},"crates.io"),". "),(0,n.kt)("li",{parentName:"ul"},"Updated new KES format to mithril library ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/674"},"PR 674")),(0,n.kt)("li",{parentName:"ul"},"We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/pull/531"},"PR 531")),(0,n.kt)("li",{parentName:"ul"},"We keep progressing on reducing the use of ",(0,n.kt)("inlineCode",{parentName:"li"},"transmute")," in ",(0,n.kt)("inlineCode",{parentName:"li"},"mithril-stm"),".")),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Nothing new to report. Still working in merging these PRs. 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This enables us to run experiments to check the correctness of\nthe algorithm.'))),(0,o.kt)("li",{parentName:"ul"},"Genesis: in progress.",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},'Work investigating the "plateaus" in the ',(0,o.kt)("inlineCode",{parentName:"li"},"ChainSync")," jumping prototype\npointed to the ",(0,o.kt)("inlineCode",{parentName:"li"},"TICKF")," slowdown on era boundaries as culprit."))),(0,o.kt)("li",{parentName:"ul"},"Tech debt:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"We improved the capabilities of our ",(0,o.kt)("inlineCode",{parentName:"li"},"io-sim")," library, which is crucial for\ntesting and simulating Cardano components."),(0,o.kt)("li",{parentName:"ul"},"We removed thunks from epoch translations in the ledger."),(0,o.kt)("li",{parentName:"ul"},"We added Linux CI support for ",(0,o.kt)("inlineCode",{parentName:"li"},"lmdb-simple"),"."),(0,o.kt)("li",{parentName:"ul"},"We got pending diffusion pipelining improvements merged."))),(0,o.kt)("li",{parentName:"ul"},"Fostering collaboration:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"We are working on a explanation of Praos and Genesis protocols."))),(0,o.kt)("li",{parentName:"ul"},"Support:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},'Investigation of CSJ "plateaus" led us to developing a caching strategy for\n',(0,o.kt)("inlineCode",{parentName:"li"},"TICKF"),' that will not only remove these "plateaus", but can help alleviating\nthe growing block production delay on epoch switch.'),(0,o.kt)("li",{parentName:"ul"},"We reviewed the block forge credential hotswapping feature which is intended\nfor use in the adoption of P2P.")))),(0,o.kt)("h2",{id:"workstreams"},"Workstreams"),(0,o.kt)("h3",{id:"finish-the-utxo-hd-prototype"},"Finish the UTxO HD prototype"),(0,o.kt)("p",null,"We merged PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4060"},"#4060"),", which adds a report documenting the UTxO HD\nfeature, and puts emphasis in explaining how the mempool works in combination\nwith UTxO HD."),(0,o.kt)("p",null,"We opened a draft PR with the second iteration of the property tests for the\nmempool (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4076"},"#4076"),")."),(0,o.kt)("p",null,"We fixed the ",(0,o.kt)("inlineCode",{parentName:"p"},"Arbitrary")," instances for keys and values in ",(0,o.kt)("inlineCode",{parentName:"p"},"DiffSeq")," benchmarks\n(",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4143"},"#4143"),"). The problem was that we were testing with mostly small\nvalues, which artificially boosted the performance gains we saw on benhcmarks.\nSpeedups are now in the range of ","[3.33, 4.75]"," across the different\nconfigurations."),(0,o.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,o.kt)("p",null,"We focused on incorporating feedback on the monadic cursor API PR (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"#1"),").\nThis required us to make small tweaks to ",(0,o.kt)("inlineCode",{parentName:"p"},"quickcheck-lockstep")," to test the new\nAPI. We also updated the backing store property tests to use the new version of\nthe monadic cursor API."),(0,o.kt)("h3",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,o.kt)("p",null,'We worked on the LSM tree prototype. In particular: finished implementing a\n"parameter tuning algorithm" that adapts the LSM tree design based on factors\nlike:'),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"workload"),(0,o.kt)("li",{parentName:"ul"},"machine specs, "),(0,o.kt)("li",{parentName:"ul"},"and characteristics of the data being stored. ")),(0,o.kt)("p",null,"We are now running experiments to gather results and cross-reference them with\nexisting experimental results from the LSM tree paper to see if the algorithm is\nworking correctly."),(0,o.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,o.kt)("p",null,'We focused on investigating the "plateaus" in the ',(0,o.kt)("inlineCode",{parentName:"p"},"ChainSync")," tip, which turned\nout to be due to the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," bug which we previously were only aware of in the\ncontext of the long forging times near epoch boundaries. For the most drastic\npatch by @nfrisby to speed up ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF"),", full sync is speeding up by 7%."),(0,o.kt)("p",null,"The following plot shows that by caching the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," the ",(0,o.kt)("inlineCode",{parentName:"p"},"ChainSync")," tip and the\n",(0,o.kt)("inlineCode",{parentName:"p"},"VolatileDB")," tip progress at the same rate."),(0,o.kt)("p",null,(0,o.kt)("img",{src:n(29287).Z,width:"765",height:"445"})),(0,o.kt)("p",null,"The plot below shows the speedup observed by caching the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," rule wrt the\nbaseline."),(0,o.kt)("p",null,(0,o.kt)("img",{src:n(17885).Z,width:"773",height:"445"})),(0,o.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,o.kt)("p",null,"After addressing the PR comments, we merged PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/16"},"#16"),", which implements\nthe ",(0,o.kt)("inlineCode",{parentName:"p"},"MonadCatch")," instance for ",(0,o.kt)("inlineCode",{parentName:"p"},"STM"),". This extends the capability of our ",(0,o.kt)("inlineCode",{parentName:"p"},"io-sim"),"\nlibrary, which is crucial for testing and simulating Cardano components PR #16\nclosed ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/1461"},"#1461"),". This new feature was published as version ",(0,o.kt)("inlineCode",{parentName:"p"},"0.4.0.0"),"\nof ",(0,o.kt)("inlineCode",{parentName:"p"},"io-sim"),"."),(0,o.kt)("p",null,"We continued with our work fixing the ",(0,o.kt)("inlineCode",{parentName:"p"},"NoThunk")," errors required for enabling\nnightly tests, with the help of ",(0,o.kt)("inlineCode",{parentName:"p"},"TVarInvariant")," checks in ",(0,o.kt)("inlineCode",{parentName:"p"},"strict-stm")," and\n",(0,o.kt)("inlineCode",{parentName:"p"},"nothunks")," libraries. We proposed fixes in ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-ledger")," that took care of\nthunks that appeared in era translations (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3143"},"#3143"),"). The fixes will be\nintegrated back into consensus when ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-ledger")," approves and publish the\nchanges introduced in ",(0,o.kt)("inlineCode",{parentName:"p"},"#3143"),"."),(0,o.kt)("p",null,"We added CI support for ",(0,o.kt)("inlineCode",{parentName:"p"},"lmdb-simple")," (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/2"},"#2"),"). We currently test the build on\na Linux environment only."),(0,o.kt)("p",null,"We got pending diffusion pipelining PRs (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3857"},"#3857"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3860"},"#3860"),",\n",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3856"},"#3856"),") merged, after rebasing and addressing feedback."),(0,o.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,o.kt)("p",null,"@nfrisby finished a visualisation tool and outlined scripts for the Praos and\nGenesis explanation presentations. The idea is to produce a video that gives an\noverview of these protocols."),(0,o.kt)("h3",{id:"support"},"Support"),(0,o.kt)("p",null,"We started working on caching the computation of the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," rule\n(",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4054"},"#4054"),"), since this was blocking our benchmarking work for\nGenesis. In addition, this issue has the Cardano community ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/issues/4421"},"quite\nconcerned"),", so we are hoping the work done in caching the\ncomputation of the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," rule can help alleviating the growing block\nproduction delay on epoch switch."),(0,o.kt)("p",null,"We reviewed the block forge credential hotswapping PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3800"},"#3800")," from the\nnetworking team, which is intended for use in the adoption of P2P."))}d.isMDXComponent=!0},17885:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png"},29287:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png"}}]);
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2023",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"}],readingTime:2.665,hasTruncateMarker:!1,authors:[{name:"Jared Corduan",title:"Ledger Team Lead",url:"https://github.com/JaredCorduan",imageURL:"https://github.com/JaredCorduan.png",key:"JaredCorduan"}],frontMatter:{title:"Ledger Team Update",slug:"2023-01-19-ledger",authors:"JaredCorduan",tags:["ledger"],hide_table_of_contents:!1},prevItem:{title:"SRE Team Update",permalink:"/cardano-updates/2023-01-20-sre"},nextItem:{title:"DB-sync Team Update",permalink:"/cardano-updates/2023-01-14-db-sync"}},u={authorsImageUrls:[void 0]},p=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Lower level summary",id:"lower-level-summary",level:2},{value:"Restructuring the ledger state",id:"restructuring-the-ledger-state",level:3},{value:"PDF hosting",id:"pdf-hosting",level:3},{value:"Powering the new ledger API",id:"powering-the-new-ledger-api",level:3},{value:"Constraint-based 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",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra-poc/issues/538"},"#538")," ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra-poc/pull/562"},"#562")),(0,n.kt)("li",{parentName:"ul"},"Met with the internal audit team and clarified scope.")),(0,n.kt)("h3",{id:"what-are-the-goals-of-next-week"},"What are the goals of next week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Complete the last two items required for a version ",(0,n.kt)("inlineCode",{parentName:"li"},"0.8.0"),"."),(0,n.kt)("li",{parentName:"ul"},"Cut the next release, version ",(0,n.kt)("inlineCode",{parentName:"li"},"0.8.0")),(0,n.kt)("li",{parentName:"ul"},"Get backup/recovery ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra-poc/issues/187"},"#187")," done with proper event sourcing (ADR18)"),(0,n.kt)("li",{parentName:"ul"},"Have the CI build macos artifacts")))}d.isMDXComponent=!0}}]);
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System level benchmark results are pending."),(0,o.kt)("li",{parentName:"ul"},"Regarding the workaround to keep the node's baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/344"},"344"),"), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run."),(0,o.kt)("li",{parentName:"ul"},"We also brought the ",(0,o.kt)("inlineCode",{parentName:"li"},"UTxO-HD")," branch up to date with node version ",(0,o.kt)("inlineCode",{parentName:"li"},"8.4.0"),".")),(0,o.kt)("h3",{id:"genesis"},"Genesis"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.\nWe are now drafting the final self-contained argument. (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4157"},"4157"),")")),(0,o.kt)("h3",{id:"support"},"Support"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We debugged a bad parameter update on the ",(0,o.kt)("inlineCode",{parentName:"li"},"Babbage")," to ",(0,o.kt)("inlineCode",{parentName:"li"},"Conway")," transition in the SanchoNet testnet (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/339"},"339"),").\nA superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/340"},"340"),", ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/354"},"354"),", and ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/355"},"355"),")\nHowever we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the ",(0,o.kt)("inlineCode",{parentName:"li"},"ConsensusProtocol")," type class and the ",(0,o.kt)("inlineCode",{parentName:"li"},"HardForkBlock")," combinator (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/345"},"345")," and ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/346"},"346"),"). 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"),(0,n.kt)("li",{parentName:"ul"},"cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. "),(0,n.kt)("li",{parentName:"ul"},"KES agent: An inconsistency between ",(0,n.kt)("inlineCode",{parentName:"li"},"contra-tracer")," available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the ",(0,n.kt)("inlineCode",{parentName:"li"},"contra-tracer")," used by consensus. ")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). 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This is a very important milestone which will\nenable us to run system-level tests and benchmarks, as well as start refactoring\nand cleaning the prototype. Regarding our Genesis workstream, we elaborated a\nroadmap that gives an indication of the remaining work. We also continued our\nwork on benchmarking chain-sync-jumping. We also continued working on improving\nthe way we handle blocks from the future, and advancing the integration of the\nnew VRF and KES crypto."),(0,o.kt)("h2",{id:"workstreams"},"Workstreams"),(0,o.kt)("h3",{id:"utxo-hd-prototype"},"UTxO HD Prototype"),(0,o.kt)("p",null,"As the prototype is nearing its completion, it was important to have enough\nconfidence that we will be able to move additional parts of the ledger state\nonto disk. We worked together with the Ledger team to ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4296"},"elaborate a\nsketch")," on how the UTxO-HD design would accommodate the migration of\nadditional data from memory to disk. This gave us enough confidence that the\ncurrent architecture will be extensible in the future."),(0,o.kt)("p",null,"On the testing front, we ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4274"},"added")," property-based tests for the UTxO-HD\ntype classes. 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We\nfound a race condition in the LMDB backing store, which ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4283"},"we fixed"),".\nAfter the fix we were able to successfully run these benchmarks. The results\nwere published by ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4295"},"this pull request"),"."),(0,o.kt)("p",null,"We used our ",(0,o.kt)("inlineCode",{parentName:"p"},"db-analyser")," tool to benchmark the cost of reading keys and\nflushing values to disk. The following plot shows the duration of these disk\noperation in relation to the main ledger operations, where we can see that the\ncost of the former are comparatively low. The spike at the beginning of the\ngraph is when, at the start of the Shelley era, the ",(0,o.kt)("em",{parentName:"p"},"entire")," UTxO set is flushed\nto disk."),(0,o.kt)("p",null,(0,o.kt)("img",{alt:"UTxO-HD read and flush benchmarks",src:n(90595).Z,width:"1600",height:"800"})),(0,o.kt)("p",null,"After months of hard work adding tests for the prototype, we are ready to run\nend-to-end tests on the node, and system level benchmarks. This signals a very\nimportant milestone for the UTxO-HD workstream \ud83c\udf89."),(0,o.kt)("h3",{id:"genesis"},"Genesis"),(0,o.kt)("p",null,"We elaborated a ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md"},"high-level decomposition")," of the remaining\nwork for Genesis. 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d(e){let{components:t,...a}=e;return(0,n.kt)(c,(0,i.Z)({},s,a,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,n.kt)("p",null,"The SRE team is heavily working on the Equinix Metal migration, replacing Hydra\nwith Cicero, and a new version of Spongix."),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h3",{id:"openziti"},"OpenZiti"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Work is ongoing on our OpenZiti integration into Bitte in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/bitte/compare/zt"},"bitte-zt"),"]."),(0,n.kt)("li",{parentName:"ul"},"CI-World deployment of Darwin CI Ziti service in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994"},"ci-world-commit-d40f4d"),"]."),(0,n.kt)("li",{parentName:"ul"},"Multiple issues filed, and a lot of discussion with the OpenZiti developers,\nwe're making pretty rapid progress thanks to them."),(0,n.kt)("li",{parentName:"ul"},"Work on getting Equinix baremetal machines integrated into AWS World Bitte\nclusters utilizing a Ziti ZTNA network overlay to bridge the networking of\nthe two environments and get IAM extension to Equinix machine for Nomad\nclient onboarding."),(0,n.kt)("li",{parentName:"ul"},"A Nix Flake for most of our OpenZiti dependencies including the Console,\nController, Edge Tunnel, and Router is now at [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/johnalotoski/openziti-bins"},"openziti-bins"),"]."),(0,n.kt)("li",{parentName:"ul"},"The Flake also includes a WiP NixOS modules for these components."),(0,n.kt)("li",{parentName:"ul"},"Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with\nno issues seen so far"),(0,n.kt)("li",{parentName:"ul"},"Moved the console to traefik routing service (",(0,n.kt)("inlineCode",{parentName:"li"},"zac.$DOMAIN"),") and\ncontroller/edge router stay at ",(0,n.kt)("inlineCode",{parentName:"li"},"zt.$DOMAIN"),", but have registered consul\nservices")),(0,n.kt)("h3",{id:"cicero--tullia-integrations"},"Cicero & Tullia Integrations"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Added webhook for [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/haskell.nix"},"haskell.nix"),"]."),(0,n.kt)("li",{parentName:"ul"},"Finished Cicero CI action for [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-addresses/pull/205"},"cardano-addresses-pull-205"),"]."),(0,n.kt)("li",{parentName:"ul"},"Fixed cardano-prelude cicero action in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946"},"cardano-prelude-pull-176"),"]."),(0,n.kt)("li",{parentName:"ul"},"Fixed the ",(0,n.kt)("inlineCode",{parentName:"li"},"abcird-stdlib/publish")," action [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/abcirdc/pull/104"},"abcirdc-pull-104"),"]"),(0,n.kt)("li",{parentName:"ul"},"fix error on vm-bigdisk flake configs [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cicero/pull/66"},"cicero-pull-66"),"]."),(0,n.kt)("li",{parentName:"ul"},"Helped with Cicero actions and answered questions for [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/plutus"},"plutus"),"]\n[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-prelude"},"cardano-prelude"),"], and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/abcirdc"},"abcirdc"),"]."),(0,n.kt)("li",{parentName:"ul"},"Merged [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/323"},"cardano-base-pull-323"),"] for Tullia on cardano-base."),(0,n.kt)("li",{parentName:"ul"},"Merged Cicero action in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ogmios/pull/5"},"cardano-ogmios-pull-5"),"]."),(0,n.kt)("li",{parentName:"ul"},"Opened [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-explorer-app/pull/427"},"cardano-explorer-app-pull-427"),"] to add Tullia and Cicero."),(0,n.kt)("li",{parentName:"ul"},"Opened [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3097"},"cardano-ledger-pull-3097"),"] to add Cicero CI action."),(0,n.kt)("li",{parentName:"ul"},"Opened [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4489"},"cardano-node-pull-4489"),"] to add Tullia and Cicero, including\nOS-agnostic jobs."),(0,n.kt)("li",{parentName:"ul"},"Opened [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4108"},"ouroboros-network-pull-4108"),"] to add Cicero action."),(0,n.kt)("li",{parentName:"ul"},"Reviewed [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/plutus/pull/4918"},"plutus-pull-4918"),"] and helped test it."),(0,n.kt)("li",{parentName:"ul"},"Update Tullia in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/abcirdc/pull/97"},"abcirdc-pull-97"),"] to build if a tag is given.")),(0,n.kt)("h3",{id:"cicero--tullia-features"},"Cicero & Tullia Features"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Improvements to Tullia task aggregation to make [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-addresses"},"cardano-addresses"),"] build\ncorrectly."),(0,n.kt)("li",{parentName:"ul"},"Better tullia CUE lib default for tags [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245"},"tullia-commit-4df3c5d"),"]."),(0,n.kt)("li",{parentName:"ul"},"Put ",(0,n.kt)("inlineCode",{parentName:"li"},"cache.nixos.org")," back in ",(0,n.kt)("inlineCode",{parentName:"li"},"cache.iog.io"),"'s upstreams. This is now\nconsidered a public cache again, and without it some Cicero evaluations had\nto build huge packages."),(0,n.kt)("li",{parentName:"ul"},"Started working on a flake-parts module for Tullia."),(0,n.kt)("li",{parentName:"ul"},"Started working on cutting down Tullia task build time by putting facts in\nJSON files."),(0,n.kt)("li",{parentName:"ul"},"Fixed running into kernel arg limit by reading tullia's DAG from a file"),(0,n.kt)("li",{parentName:"ul"},"Merged [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/tullia/pull/9"},"tullia-pull-9"),"] that fixes several issues related to error reporting.\nand escaping."),(0,n.kt)("li",{parentName:"ul"},"Added Mac builders in Cicero on CI-World."),(0,n.kt)("li",{parentName:"ul"},"Started work on Tullia invocation caching.")),(0,n.kt)("h3",{id:"spongix"},"Spongix"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"A lot of progress on an SQlite backed version of Spongix, it already supports\nthe full HTTP binary cache protocol but still lacks comprehensive testing and\nsome tuning, as well as recursive lookups."),(0,n.kt)("li",{parentName:"ul"},"First steps in the implementation of the ",(0,n.kt)("inlineCode",{parentName:"li"},"nix-daemon")," ",(0,n.kt)("inlineCode",{parentName:"li"},"ssh-ng")," protocol so\nSpongix can be used via SSH and we can get rid of basic auth.")),(0,n.kt)("h3",{id:"bugs"},"Bugs"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Discovered Cicero bug where Nomad reschedules cause the Github commit status\nto get stuck in ",(0,n.kt)("inlineCode",{parentName:"li"},"pending")),(0,n.kt)("li",{parentName:"ul"},"Discovered Cicero race condition bug around concurrent transactions for\ncodependent actions."),(0,n.kt)("li",{parentName:"ul"},"Fixed tullia task order bug in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-addresses"},"cardano-addresses"),"]"),(0,n.kt)("li",{parentName:"ul"},"Diagnose Cicero action not triggered in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/abcirdc"},"abcirdc"),"]"),(0,n.kt)("li",{parentName:"ul"},"Fixed meta/description of the Tullia package in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/tullia/pull/7"},"tullia-pull-7"),"]"),(0,n.kt)("li",{parentName:"ul"},"Add Vault token loop alerts in [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/bitte-cells/pull/40"},"bitte-cells-pull-40"),"]"),(0,n.kt)("li",{parentName:"ul"},"Ongoing investigation on recurring Patroni and nomad-follower issues related\nto token rotation.")))}d.isMDXComponent=!0}}]);
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Creating test-vectors for verifying basic pairing properties."),(0,n.kt)("li",{parentName:"ul"},"KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  "),(0,n.kt)("li",{parentName:"ul"},"Sidechains: Included BLS12-381 & JubJub to halo2curves"),(0,n.kt)("li",{parentName:"ul"},"MuSig2: Final modifs to C version.")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"mithril"},"Mithril"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. ")),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"BLS12-381 branch merged ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/266"},"PR#266"),". "),(0,n.kt)("li",{parentName:"ul"},"Testing strategy for BLS bindings:",(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Test-vectors for Groth16, and simple BLS signatures ready."),(0,n.kt)("li",{parentName:"ul"},"Test-vectors with different library, and created by different engineer. ")))),(0,n.kt)("h3",{id:"kes-agent"},"KES agent"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Resolved issues of circular dependency"),(0,n.kt)("li",{parentName:"ul"},"Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  "),(0,n.kt)("li",{parentName:"ul"},"Opened a PR for raw bearer branch in ouroboros network ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4395"},"PR4395")),(0,n.kt)("li",{parentName:"ul"},"Resolved a bug where the agent node did not properly closed connections"),(0,n.kt)("li",{parentName:"ul"},"Updated version of ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/70"},"IOSim")," allowed us to finish a first version of KES agent.")),(0,n.kt)("h3",{id:"sidechains"},"Sidechains"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Included ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a"},"BLS12-381")," curve to our branch of halo2curves"),(0,n.kt)("li",{parentName:"ul"},"Included ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f"},"JubJub")," to our branch of halo2curves ")),(0,n.kt)("h3",{id:"musig2"},"MuSig2"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Minor reorg ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/42"},"PR#42")),(0,n.kt)("li",{parentName:"ul"},"Started including fuzz testing for deserialisation ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/43"},"PR#"))))}m.isMDXComponent=!0}}]);
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Further adaptations for KES agent. "),(0,n.kt)("li",{parentName:"ul"},"Sidechains: Implement BLS and JubJub using upstream's macros to merge these curves in halo2curves.")),(0,n.kt)("h2",{id:"low-level-summary"},"Low level summary"),(0,n.kt)("h3",{id:"cardano-base"},"cardano-base"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"RawBearer API in ouroboros-network-framework (",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4395)"},"https://github.com/input-output-hk/ouroboros-network/pull/4395)"),"; this is needed for KES Agent. 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It was barely used in the ledger repository, and it added a dependency\nthat we did not want to maintain. It was a bit difficult to remove, and we had\nto coordinate removing it from cardano-base.\nA lot ended up going into ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/2992"},"pull-2992"),", due to the coordination effort, and we ended\nup updating Plutus as well.\nThis means that we've now also made a lot of progress on the problematic cost model serialization\nissues described in ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2902"},"issue-2902"),".\nIn particular, after we resolve ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3014"},"issue-3014"),", we will not have to wait an epoch before\nreleasing a cost model for a new version of Plutus, as we had to do for the Vasil HF."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3046"},"issue-3046"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3055"},"pull-3055"),"] We moved a module that is now only used in Byron to a Byron package."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3047"},"issue-3047"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3054"},"pull-3054"),"] We improved the interface to the ",(0,r.kt)("inlineCode",{parentName:"li"},"Value")," (multi-asset) type."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3044"},"pull-3044"),"] We debugged and fixed a tricky compilation issue. Certain kinds of field updates\nwere adding approximately 20 minutes to our compile time!"),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2932"},"issue-2932"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3036"},"pull-3036"),"] As a part of our ongoing re-organization of the codebase, we\nhave added a ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.[Era].Core")," module to each ledger era that has a TxBody class.\nMost classes defined in the era should go in this new module.\nWe also re-export the ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardno.Ledger.Core")," module and the previous ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.[Era].Core"),"\nmodules from each era.")),(0,r.kt)("h3",{id:"technical-debt-in-progress"},"Technical debt in progress"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3034"},"issue-3034"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3035"},"issue-3035"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/issues/4421"},"node-issue-4421"),"] We are continuing to write benchmarks to understand exactly where\nall the time is being spent on executing the ",(0,r.kt)("inlineCode",{parentName:"li"},"TICKF")," transition.\nThe consolidation of the per-stake-credential stake distribution to the per-stake-pool\ndistribution does seem to account for a large amount of time (near a second as written, which we\nhave down to about half a second with some optimizations),\nbut this does not account for everything.\nApplying the reward update may also be a big contributing factor."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3033"},"pull-3033"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3038"},"pull-3038"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3041"},"pull-3041"),"] A separate team is working on upgrading all the\ncardano-node repositories to work with ghc 9.2.4. 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We also worked with the Ledger team to envisage\nthe modifications that are required in Ledger and Consensus to accommodate the\nchanges in the crypto VRF and KES. The ",(0,a.kt)("inlineCode",{parentName:"p"},"db-analyser")," now supports bechmarking\nthe ledger operations, which will allow us to identify, debug, and profile\npotential performance problems. We drafted a document that defines how to manage\nthe versions of Consensus-related packages. The top level documentation of\n",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," now features a description of the consensus components and\nprovides a hyperlinked map to the modules documentation."),(0,a.kt)("h2",{id:"workstreams"},"Workstreams"),(0,a.kt)("h3",{id:"utxo-hd-prototype"},"UTxO HD prototype"),(0,a.kt)("p",null,"Whereas we had passing sequential state-machine tests for the mempool, the\nparallel case proved to be more challenging than we thought. The operation of\nadding a list of transactions to the mempool is not atomic and, as a result,\nwhen adding a list of transactions, transactions from other processes can be\nadded in between. The mempool implementation handles this correctly, however\nthis required us to ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4076"},"redesign")," the parallel model we had to take\nthe lack of atomicity into account."),(0,a.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,a.kt)("p",null,"We finished refactoring the backing store property tests. The second review\nround is ongoing."),(0,a.kt)("h3",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,a.kt)("p",null,"We are working on benchmarking (in terms of time and number of IO operations)\nfetching/looking up data from disk."),(0,a.kt)("h3",{id:"genesis"},"Genesis"),(0,a.kt)("p",null,"We worked on the design of a mechanism to prevent a DoS attack on our Genesis\ndesign related to rollbacks. This was arguably the biggest outstanding question."),(0,a.kt)("p",null,"During the discussions around Genesis, we noticed a design boundary that nicely\ndelineates a fundamental component. We almost have a full Haskell prototype of\nit. It will be very nicely self-contained, perhaps even usable in the ultimate\nimplementation!"),(0,a.kt)("h3",{id:"new-vrf-and-kes-crypto-integration"},"New VRF and KES crypto integration"),(0,a.kt)("p",null,"We collaborated with the Ledger team on preparing the ledger state and crypto\ntypes to avoid huge allocation on the epoch boundary when changing aspects of\nthe crypto that will only manifest in headers, not in the ledger states."),(0,a.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,a.kt)("p",null,"We merged the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4014"},"pull-request")," that adds a support to ",(0,a.kt)("inlineCode",{parentName:"p"},"db-analyser")," for\nbenchmarking ledger operations. This will allow us to identify, debug, and\nprofile potential performance problems. The benchmark focus on the main 5 ledger\noperations that are involved in chain syncing, block forging, and block\nvalidation, namely:"),(0,a.kt)("ol",{start:0},(0,a.kt)("li",{parentName:"ol"},"Forecast."),(0,a.kt)("li",{parentName:"ol"},"Header tick."),(0,a.kt)("li",{parentName:"ol"},"Header application."),(0,a.kt)("li",{parentName:"ol"},"Block tick."),(0,a.kt)("li",{parentName:"ol"},"Block application.")),(0,a.kt)("p",null,"The following figure shows a plot of the benchmarking results for the first 65\nmillion blocks (approximately) of the Cardano chain. The thin yellow lines under\nthe x-axis show the epoch boundaries, whereas the thick yellow lines correspond\nto the era transitions."),(0,a.kt)("p",null,(0,a.kt)("img",{src:n(2666).Z,width:"1600",height:"800"})),(0,a.kt)("p",null,"As we can see in this figure, era and epoch boundaries require more computation\ntime. The ledger team are aware of this problem, and we are working to improve\nthis situation."),(0,a.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4207"},"drafted a document")," motivating and defining how Consensus (and\npossibly other core teams) will/should manage our package versions. This\npull-request garnered many great discussions from our team members and other\nteams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et\nal. We want to thank you all for your input, and we found this discussion very\nenlightening!"),(0,a.kt)("p",null,"We merged the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4197"},"pull request")," that adds an overview of consensus to\nthe ",(0,a.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/ouroboros-network/"},"top level\ndocumentation")," of\nouroboros-network. This overview describes the consensus components and adds a\nhyperlinked map to the modules documentation."))}c.isMDXComponent=!0},2666:(e,t,n)=>{n.d(t,{Z:()=>o});const o=n.p+"assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png"}}]);
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The prototype should be able to\naccommodate these changes without any major modifications."),(0,r.kt)("li",{parentName:"ul"},"Start the integration with other downstream components, such as the wallet and\ndb-sync. The idea is to identify and address any potential pain points that\nmight arise during this integration."),(0,r.kt)("li",{parentName:"ul"},"Run integration tests and system-level benchmarks.")),(0,r.kt)("h4",{id:"genesis-1"},"Genesis"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish benchmarking and tuning the fast-path ChainSync Jumping prototype"),(0,r.kt)("li",{parentName:"ul"},"Expand and optimize the self-contained implementation of the Disconnect Rule\n(including density comparisons and the LoE)"),(0,r.kt)("li",{parentName:"ul"},"Develop documentation and smoke tests for these components."),(0,r.kt)("li",{parentName:"ul"},"Start modifying the ChainSync Client for the LoP and LoR.")),(0,r.kt)("h4",{id:"support-1"},"Support"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Help the Network team with diagnosing performance regression in block\nproduction.")),(0,r.kt)("h4",{id:"tech-debt"},"Tech debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Fix property-test failures concerning iterators (",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3999"},"#3999")," and\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4183"},"#4183"),").")),(0,r.kt)("h4",{id:"fostering-collaboration-1"},"Fostering collaboration"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4145"},"mapping consensus"),".")),(0,r.kt)("h3",{id:"risks"},"Risks"),(0,r.kt)("h4",{id:"utxo-hd-2"},"UTxO HD"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Moving other parts of the ledger state to disk might require a major redesign\nof the prototype. 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currently we're porting the definition of our model cluster."),(0,a.kt)("li",{parentName:"ul"},"P&T Meetup: We had a very productive personal meetup in Lugano, Switzerland."),(0,a.kt)("li",{parentName:"ul"},"Offboarding: Sadly, we have to say goodbye to our team lead. 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However, this still needs to\nbe balanced against resource demand for all our cluster's nodes."),(0,a.kt)("h3",{id:"tracing"},"Tracing"),(0,a.kt)("p",null,"For our new tracing system, we're currently validating the behaviour of the system after optimizations have been applied. Furthermore, some\nquality-of-life details that have changed required us to revision the system documentation."),(0,a.kt)("h3",{id:"analysis"},"Analysis"),(0,a.kt)("p",null,"As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been\nnormally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a\nhuge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. "),(0,a.kt)("h3",{id:"open-sourcing"},"Open Sourcing"),(0,a.kt)("p",null,"A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking\ncopmonents more accessible. As a result, detailed charts for both our LogObject CLI ",(0,a.kt)("inlineCode",{parentName:"p"},"locli")," and our ",(0,a.kt)("inlineCode",{parentName:"p"},"workbench")," have been merged to ",(0,a.kt)("inlineCode",{parentName:"p"},"master"),". "),(0,a.kt)("h3",{id:"nomad-backend"},"Nomad backend"),(0,a.kt)("p",null,"While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we've been adjusting\nthose profiles of our ",(0,a.kt)("inlineCode",{parentName:"p"},"workbench")," that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality\nof the nomad cloud backend.  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Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!"))}m.isMDXComponent=!0}}]);
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This is the primary way for new\nunregistered nodes to enter the network, which then can be shared using peer\nsharing.  Note that peer sharing is an experimental feature which is disabled\nuntil genesis & eclipse evasion as fully implemented. See ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3596"},"#3596"),"."),(0,o.kt)("p",null,"We are making progress reviewing eclipse evasion, ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3886"},"#3886"),"."),(0,o.kt)("p",null,"We fixed another bug in local root peers.  We found out that if the local roots\nwhere ignored until the first domain name was resolved, see ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4583"},"#4583"),".  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See ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4589"},"#4589"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4593"},"#4593")," and ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5313"},"#5313"),".\nThe new version of ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," will use ",(0,o.kt)("inlineCode",{parentName:"p"},"ISO8601")," formatted\ntimestamps; also the formatting of ping results is slightly improved, and it\nwill introduce the new ",(0,o.kt)("inlineCode",{parentName:"p"},"--query-versions")," (",(0,o.kt)("inlineCode",{parentName:"p"},"-Q"),") switch.  If the remote site\nsupports the query parameter, the command will print:"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre"},"redacted-ip:port network rtt: 0.064\nredacted-ip:port handshake rtt: 0.064010896s\nredacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat\norAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]\n")),(0,o.kt)("p",null,"otherwise it will print the negotiation results"),(0,o.kt)("pre",null,(0,o.kt)("code",{parentName:"pre"},"redacted-ip:port network rtt: 0.045\nredacted-ip:port handshake rtt: 0.101867615s\nredacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder\n")),(0,o.kt)("p",null,"Note that in that case ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," offers ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),", which\nallows us to detect whether the remote side is an ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorOnly")," or\n",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),".   Also ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-cli ping")," will no longer announce\nitself as ",(0,o.kt)("inlineCode",{parentName:"p"},"InitiatorAndResponder"),", except for the case mentioned above."),(0,o.kt)("h3",{id:"other-smaller-contributions"},"Other smaller contributions"),(0,o.kt)("p",null,"On a request from the Marlow Team, we published haddocks of ",(0,o.kt)("inlineCode",{parentName:"p"},"typed-protocols"),",\nwhich are now available ",(0,o.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/typed-protocols/"},"here")," (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/40"},"#40"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/typed-protocols/pull/41"},"#41"),")."),(0,o.kt)("p",null,"We made a new release of ",(0,o.kt)("inlineCode",{parentName:"p"},"strict-stm-1.1.0.1")," on Hackage, which fixed a bug in\npackage description file, ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/101"},"#101")," ."),(0,o.kt)("p",null,"We also helped to debug a deadlock when using named pipes on Windows in the new\n",(0,o.kt)("inlineCode",{parentName:"p"},"RawBearer")," API.  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Thanks to these tests we were able to uncover a bug in the\nprototype. On the Genesis front, we benchmarked a different version of the\nChainSync jumping prototype to try to improve its performance, but this did not\nresult in any noticeable speedup."),(0,a.kt)("h2",{id:"high-level-status-report"},"High-level status report"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Finish the UTxO HD prototype: on track.",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We focused on increasing test coverage for the UTxO-HD prototype:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We started implementing Cadano-eras transition property-tests."),(0,a.kt)("li",{parentName:"ul"},"We started implementing state-machine property-tests for the mempool."),(0,a.kt)("li",{parentName:"ul"},"We merged the mempool rewrite."),(0,a.kt)("li",{parentName:"ul"},"We started working on state-machine tests for the backing store. 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In particular we aim to run parallel state-machine tests that\nexercise the mempool in a way similar to how the node would make use of it."),(0,a.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,a.kt)("p",null,"We started working on ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4081"},"state-machine tests for the backing\nstore")," that UTxO\nHD uses. The property tests uncovered errors in the range-reads implementation\nof the LMDB backing store. To facilitate fixing this bug, we made\n",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"changes")," to the Haskell\nLMDB bindings."),(0,a.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,a.kt)("p",null,"Prompted by previous benchmarks showing significant improvements in sync time by\nusing more capabilities, we implemented a way to spread out the ChainSync\nupdates over a larger period instead of firing them all at the same time. This\ndidn't result in a noticeable speedup."),(0,a.kt)("p",null,"We also benchmarked the prototype with CSJ disabled (such that just the dynamo\npeer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule\nout/confirm overhead by non-ChainSync (mainly BlockFetch) related components.\nThis results in era-specific behavior (speed is like the prototype in Byron, but\nlike the baseline in Shelley). 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Odd problems when publishing monthly report:",(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Make us think about if we should change something about the website ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/908"},"#908")),(0,n.kt)("li",{parentName:"ul"},"Open issue to docusaurus ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/facebook/docusaurus/issues/9036"},"#9036")))),(0,n.kt)("li",{parentName:"ul"},"Fixed a bug in the benchmark process ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/pull/910"},"#910")),(0,n.kt)("li",{parentName:"ul"},"Explored performance of the ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-node"),"{.verbatim} and identified a\nbottleneck."),(0,n.kt)("li",{parentName:"ul"},"Timed transaction feature is being used by the auction project \ud83c\udf89 ")),(0,n.kt)("h2",{id:"what-are-the-goals-of-next-week"},"What are the goals of next week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Complete performance analysis and start/plan improvements and provide\nregular benchmarks for Hydra ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/186"},"#186")),(0,n.kt)("li",{parentName:"ul"},"Add hydra as tool to developer platform ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/872"},"#872"),"."),(0,n.kt)("li",{parentName:"ul"},"Authenticate network messages ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/727"},"#727"),"."),(0,n.kt)("li",{parentName:"ul"},"Complete journey for external commits using multiple script UTxOs ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/pull/903"},"#903")),(0,n.kt)("li",{parentName:"ul"},"Start implementing ",(0,n.kt)("em",{parentName:"li"},"Option B")," for external commits ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/215"},"#215"),".")))}m.isMDXComponent=!0}}]);
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We started a DoS mitigation handbook and updated our\nconceptual component diagram to guide the Genesis design. We engaged with the\nIOG researchers to work on the Limit on Patience attack vector, work in this\narea is still ongoing. We sketched a design to decouple the CPU load of the node\nfrom its responsiveness to the socket. Finally, we discussed with Networking our\napproach to lower the performance impact of the BlockFetch decision logic, and\ngot green light from them."),(0,a.kt)("p",null,"We migrated the consensus code to a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-consensus"},"new\nrepository"),", splitting\nit from the ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," repository, and released version 0.6 of\nConsensus."),(0,a.kt)("p",null,"We also merged the mempool fairness improvement to main branch."),(0,a.kt)("p",null,"Another significant enhancement to our documentation was the addition of an\nexplanation of the hardfork combinator forecast horizon."),(0,a.kt)("p",null,"See the sections below for more details."),(0,a.kt)("h2",{id:"genesis"},"Genesis"),(0,a.kt)("p",null,"We reviewed the ",(0,a.kt)("inlineCode",{parentName:"p"},"BlockFetch")," design documentation, and added some source-code\ncomments that emphasize certain properties of the decisions the ",(0,a.kt)("inlineCode",{parentName:"p"},"BlockFetch"),"\nlogic makes that are helping us confirm that Genesis does not require any\nchanges to ",(0,a.kt)("inlineCode",{parentName:"p"},"BlockFetch"),". We are waiting on input from our former system\narchitect to verify this."),(0,a.kt)("p",null,"We migrated and updated the conceptual component diagram in the ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus"),"\nrepository which helps us situate the Genesis design and argument."),(0,a.kt)("p",null,"We engaged with the IOG researchers about the Genesis design. We sketched out a\nway to address the concern that the Limit on Patiente (LoP) attack vector duty\ncycle is indeed low, but it's still non-trivial to ultimately conclude it's\nsufficiently low."),(0,a.kt)("p",null,"We also sketched a design to decouple the CPU load of the node from its\nresponsiveness to the socket, since the LoP is a relatively tight timeout, and\nnode performance bugs inducing seconds-worth of latency are unfortunately\nfamiliar phenomena."),(0,a.kt)("h2",{id:"fostering-collaboration"},"Fostering collaboration"),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/62"},"added an\nexplanation")," of\na question that we had to explain many times about the exact behavior of the\nhardfork combinator forecast horizon."))}p.isMDXComponent=!0}}]);
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It was barely used in the ledger repository, and it added a dependency\nthat we did not want to maintain. It was a bit difficult to remove, and we had\nto coordinate removing it from cardano-base.\nA lot ended up going into ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/2992"},"pull-2992"),", due to the coordination effort, and we ended\nup updating Plutus as well.\nThis means that we've now also made a lot of progress on the problematic cost model serialization\nissues described in ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2902"},"issue-2902"),".\nIn particular, after we resolve ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3014"},"issue-3014"),", we will not have to wait an epoch before\nreleasing a cost model for a new version of Plutus, as we had to do for the Vasil HF."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3046"},"issue-3046"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3055"},"pull-3055"),"] We moved a module that is now only used in Byron to a Byron package."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3047"},"issue-3047"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3054"},"pull-3054"),"] We improved the interface to the ",(0,r.kt)("inlineCode",{parentName:"li"},"Value")," (multi-asset) type."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3044"},"pull-3044"),"] We debugged and fixed a tricky compilation issue. Certain kinds of field updates\nwere adding approximately 20 minutes to our compile time!"),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2932"},"issue-2932"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3036"},"pull-3036"),"] As a part of our ongoing re-organization of the codebase, we\nhave added a ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.[Era].Core")," module to each ledger era that has a TxBody class.\nMost classes defined in the era should go in this new module.\nWe also re-export the ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardno.Ledger.Core")," module and the previous ",(0,r.kt)("inlineCode",{parentName:"li"},"Cardano.Ledger.[Era].Core"),"\nmodules from each era.")),(0,r.kt)("h3",{id:"technical-debt-in-progress"},"Technical debt in progress"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3034"},"issue-3034"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3035"},"issue-3035"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/issues/4421"},"node-issue-4421"),"] We are continuing to write benchmarks to understand exactly where\nall the time is being spent on executing the ",(0,r.kt)("inlineCode",{parentName:"li"},"TICKF")," transition.\nThe consolidation of the per-stake-credential stake distribution to the per-stake-pool\ndistribution does seem to account for a large amount of time (near a second as written, which we\nhave down to about half a second with some optimizations),\nbut this does not account for everything.\nApplying the reward update may also be a big contributing factor."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3033"},"pull-3033"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3038"},"pull-3038"),"][",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3041"},"pull-3041"),"] A separate team is working on upgrading all the\ncardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort."),(0,r.kt)("li",{parentName:"ul"},"The nix scripts used to build our new\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/formal-ledger-specifications"},"formal ledger model"),"\ndo not work consistently for everyone, and we have been working on fixing these issues."),(0,r.kt)("li",{parentName:"ul"},"[",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3014"},"issue-3014"),"] We are still working on adding a versioning scheme to all of the ledger\nserializers.")))}c.isMDXComponent=!0}}]);
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As\npart of our work on UTxO HD, we improved the Haskell support for LMDB. We also\nspent time working on the LSM tree prototype, and designed a parameter tuning\nalgorithm for it. Regarding our work on Genesis, our investigation of the\n"plateaus" pointed at the ',(0,o.kt)("inlineCode",{parentName:"p"},"TICKF"),' slowdown on era boundaries as culprit. This\nled us to developing a caching strategy that will not only remove the\naforementioned "plateaus", but can help alleviating the growing block production\ndelay on epoch switch. We also helped reviewing the block forge credential\nhotswap feature, which is intended for use in the adoption of P2P.'),(0,o.kt)("p",null,"We also worked on paying technical debt and fostering collaboration. In\nparticular, we improved the ",(0,o.kt)("inlineCode",{parentName:"p"},"io-sim")," framework, which is crucial for testing and\nsimulating Cardano components. We also removed thunks that appeared on era\ntranslations, and improved our diffusion pipelining feature. We are working on a\npresentation for explaining Praos and Genesis."),(0,o.kt)("h2",{id:"high-level-status-report"},"High-level status report"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Finish the UTxO HD prototype: in progress.",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"We added documentation for this feature."),(0,o.kt)("li",{parentName:"ul"},"We developed the second version of the mempool tests."),(0,o.kt)("li",{parentName:"ul"},"We fixed benchmarks that were inflating the speedup we observed in the\nanti-diff implementation of sequences of differences. Speedups are now in the\nrange of ","[3.33, 4.75]",", which remain significant."),(0,o.kt)("li",{parentName:"ul"},"We continued improving Haskell LMDB support."),(0,o.kt)("li",{parentName:"ul"},'We finished implementing a "parameter tuning algorithm" for the LSM tree\nprototype. This enables us to run experiments to check the correctness of\nthe algorithm.'))),(0,o.kt)("li",{parentName:"ul"},"Genesis: in progress.",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},'Work investigating the "plateaus" in the ',(0,o.kt)("inlineCode",{parentName:"li"},"ChainSync")," jumping prototype\npointed to the ",(0,o.kt)("inlineCode",{parentName:"li"},"TICKF")," slowdown on era boundaries as culprit."))),(0,o.kt)("li",{parentName:"ul"},"Tech debt:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"We improved the capabilities of our ",(0,o.kt)("inlineCode",{parentName:"li"},"io-sim")," library, which is crucial for\ntesting and simulating Cardano components."),(0,o.kt)("li",{parentName:"ul"},"We removed thunks from epoch translations in the ledger."),(0,o.kt)("li",{parentName:"ul"},"We added Linux CI support for ",(0,o.kt)("inlineCode",{parentName:"li"},"lmdb-simple"),"."),(0,o.kt)("li",{parentName:"ul"},"We got pending diffusion pipelining improvements merged."))),(0,o.kt)("li",{parentName:"ul"},"Fostering collaboration:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"We are working on a explanation of Praos and Genesis protocols."))),(0,o.kt)("li",{parentName:"ul"},"Support:",(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},'Investigation of CSJ "plateaus" led us to developing a caching strategy for\n',(0,o.kt)("inlineCode",{parentName:"li"},"TICKF"),' that will not only remove these "plateaus", but can help alleviating\nthe growing block production delay on epoch switch.'),(0,o.kt)("li",{parentName:"ul"},"We reviewed the block forge credential hotswapping feature which is intended\nfor use in the adoption of P2P.")))),(0,o.kt)("h2",{id:"workstreams"},"Workstreams"),(0,o.kt)("h3",{id:"finish-the-utxo-hd-prototype"},"Finish the UTxO HD prototype"),(0,o.kt)("p",null,"We merged PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4060"},"#4060"),", which adds a report documenting the UTxO HD\nfeature, and puts emphasis in explaining how the mempool works in combination\nwith UTxO HD."),(0,o.kt)("p",null,"We opened a draft PR with the second iteration of the property tests for the\nmempool (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4076"},"#4076"),")."),(0,o.kt)("p",null,"We fixed the ",(0,o.kt)("inlineCode",{parentName:"p"},"Arbitrary")," instances for keys and values in ",(0,o.kt)("inlineCode",{parentName:"p"},"DiffSeq")," benchmarks\n(",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4143"},"#4143"),"). The problem was that we were testing with mostly small\nvalues, which artificially boosted the performance gains we saw on benhcmarks.\nSpeedups are now in the range of ","[3.33, 4.75]"," across the different\nconfigurations."),(0,o.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,o.kt)("p",null,"We focused on incorporating feedback on the monadic cursor API PR (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"#1"),").\nThis required us to make small tweaks to ",(0,o.kt)("inlineCode",{parentName:"p"},"quickcheck-lockstep")," to test the new\nAPI. We also updated the backing store property tests to use the new version of\nthe monadic cursor API."),(0,o.kt)("h3",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,o.kt)("p",null,'We worked on the LSM tree prototype. In particular: finished implementing a\n"parameter tuning algorithm" that adapts the LSM tree design based on factors\nlike:'),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"workload"),(0,o.kt)("li",{parentName:"ul"},"machine specs, "),(0,o.kt)("li",{parentName:"ul"},"and characteristics of the data being stored. ")),(0,o.kt)("p",null,"We are now running experiments to gather results and cross-reference them with\nexisting experimental results from the LSM tree paper to see if the algorithm is\nworking correctly."),(0,o.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,o.kt)("p",null,'We focused on investigating the "plateaus" in the ',(0,o.kt)("inlineCode",{parentName:"p"},"ChainSync")," tip, which turned\nout to be due to the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," bug which we previously were only aware of in the\ncontext of the long forging times near epoch boundaries. For the most drastic\npatch by @nfrisby to speed up ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF"),", full sync is speeding up by 7%."),(0,o.kt)("p",null,"The following plot shows that by caching the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," the ",(0,o.kt)("inlineCode",{parentName:"p"},"ChainSync")," tip and the\n",(0,o.kt)("inlineCode",{parentName:"p"},"VolatileDB")," tip progress at the same rate."),(0,o.kt)("p",null,(0,o.kt)("img",{src:n(29287).Z,width:"765",height:"445"})),(0,o.kt)("p",null,"The plot below shows the speedup observed by caching the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," rule wrt the\nbaseline."),(0,o.kt)("p",null,(0,o.kt)("img",{src:n(17885).Z,width:"773",height:"445"})),(0,o.kt)("h3",{id:"technical-debt"},"Technical debt"),(0,o.kt)("p",null,"After addressing the PR comments, we merged PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/16"},"#16"),", which implements\nthe ",(0,o.kt)("inlineCode",{parentName:"p"},"MonadCatch")," instance for ",(0,o.kt)("inlineCode",{parentName:"p"},"STM"),". 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We currently test the build on\na Linux environment only."),(0,o.kt)("p",null,"We got pending diffusion pipelining PRs (",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3857"},"#3857"),", ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3860"},"#3860"),",\n",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3856"},"#3856"),") merged, after rebasing and addressing feedback."),(0,o.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,o.kt)("p",null,"@nfrisby finished a visualisation tool and outlined scripts for the Praos and\nGenesis explanation presentations. 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In addition, this issue has the Cardano community ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/issues/4421"},"quite\nconcerned"),", so we are hoping the work done in caching the\ncomputation of the ",(0,o.kt)("inlineCode",{parentName:"p"},"TICKF")," rule can help alleviating the growing block\nproduction delay on epoch switch."),(0,o.kt)("p",null,"We reviewed the block forge credential hotswapping PR ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3800"},"#3800")," from the\nnetworking team, which is intended for use in the adoption of P2P."))}d.isMDXComponent=!0},17885:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png"},29287:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png"}}]);
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+"use strict";(self.webpackChunkcardano_updates=self.webpackChunkcardano_updates||[]).push([[25853],{33480:e=>{e.exports=JSON.parse('{"blogPosts":[{"id":"2023-Q2-consensus","metadata":{"permalink":"/cardano-updates/quarterly/2023-Q2-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-consensus.md","source":"@site/quarterly/2023-Q2-consensus.md","title":"Consensus Q2 2023 Update","description":"2023-04 -- 2023-06","date":"2023-12-07T21:19:58.000Z","formattedDate":"December 7, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/quarterly/tags/consensus"}],"readingTime":4.47,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Q2 2023 Update","slug":"2023-Q2-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"nextItem":{"title":"Network Q2 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q2-network"}},"content":"## 2023-04 -- 2023-06\\n\\n### Main achievements\\n\\n#### UTxO HD\\n\\n- We finished a major prototype refactoring, which includes:\\n    - A better and finer grained DB lock mechanism.\\n    - Elimination of race conditions.\\n    - Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.\\n    - Architectural simplifications and performance improvements.\\n- We implemented a new package to support db-sync integration with UTxO-HD.\\n- We ran another set of ad-hoc benchmarks:\\n    - We uncovered a performance regression on the Network component when using `GHC-9.2/9.4`.\\n    - The synchronization and replay speed are as expected.\\n    - However, we uncovered memory consumption issues (see figure below).\\n        - The in-memory backend is consuming more memory than the baseline.\\n        - The LMDB backend shows an unexpected memory usage peak.\\n        - Investigation on these issues is ongoing.\\n- We integrated the latest changes in `main` branch.\\n    - This required a re-design of the mempool to include the mempool fairness\\n      improvement.\\n\\n![](/images/consensus/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks.png)\\n\\n#### Genesis\\n\\n- The Genesis work for this PI focused on an high-priority issue from the IOG Researchers\' feedback on the proposal.\\n    - This particular question was not anticipated when the Q2 PI was planned.\\n    - As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.\\n    - That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.\\n- The IOG Researchers\' feedback on the design was very valuable. It had two primary effects.\\n- Outcome 1: We re-introduced distinct behaviors when the node is \\"syncing\\" versus when it is \\"caught up\\".\\n    - This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.\\n    - The additional design complexity is relatively small.\\n- Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.\\n    - The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.\\n    - All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.\\n    - Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.\\n    - The primary invention was a model for bounding how much benefit the adversary\'s long-range attack could possibly gain from Praos\'s natural short forks.\\n- Relevant questions that the IOG Researchers are still assessing.\\n    - These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.\\n    - Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?\\n    - Question 2: what is the upper bound on how much grinding can improve the adversary\'s leader schedule within some Genesis window?\\n\\n#### Support\\n- We performed an analysis on number of file descriptors used by Consensus, this\\n  information can be used by the node operators to check if the number of file\\n  descriptors they want to support are enough, thus improving the user (eg node\\n  operator) experience.\\n- We implemented a mempool fairness improvement, by which transactions are\\n  guaranteed to be processed irrespective of their size.\\n\\n#### Technical debt\\n\\n- We fixed a bug in followers logic, which was discovered by our `QuickCheck`\\nproperty tests.\\n- We created an [immutable DB\\n  server](https://github.com/input-output-hk/ouroboros-consensus/pull/68). This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.\\n- We created a [`db-truncater`](https://github.com/input-output-hk/ouroboros-consensus/pull/70) tool, which can be used in disaster recovery and benchmarking scenarios.\\n- We created a [benchmarks comparison tool](https://github.com/input-output-hk/ouroboros-consensus/pull/161) that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance *improvements* introduced by the Ledger team in version `0.6.0.0` of Consensus wrt version `0.5.0.0`.\\n\\n![](/images/consensus/2023-Q2-beacon-graph.png)\\n\\n#### Fostering collaboration\\n\\n- We released `fs-sim` as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.\\n- We migrated the consensus code to a [new repository](https://github.com/input-output-hk/ouroboros-consensus), splitting\\nit from the `ouroboros-network` repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).\\n- We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).\\n- We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.\\n\\n### Next steps\\n\\n#### UTxO HD\\n\\n- We will [get UTxO-HD ready for handover](https://github.com/input-output-hk/ouroboros-consensus/issues/28).\\n\\n#### Genesis\\n\\n- We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work."},{"id":"2023-Q2-network","metadata":{"permalink":"/cardano-updates/quarterly/2023-Q2-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-network.md","source":"@site/quarterly/2023-Q2-network.md","title":"Network Q2 2023 Update","description":"2023-04 - 2023-06","date":"2023-12-07T21:19:58.000Z","formattedDate":"December 7, 2023","tags":[{"label":"network","permalink":"/cardano-updates/quarterly/tags/network"}],"readingTime":5.145,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Q2 2023 Update","slug":"2023-Q2-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Q2 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q2-consensus"},"nextItem":{"title":"SRE Q2 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q2-sre"}},"content":"## 2023-04 - 2023-06\\n\\n### Main achievements\\n\\n#### Eclipse Evasion\\n\\nWe finalised the design of eclipse evasion and implemented its mechanism which\\nrelays on connectivity to _big ledger peers_.  _Big ledger peers_ are the\\nlargest ledger peers which accumulate 90% of stake (currently there are less\\nthan 1000 of them).  The outbound governor has new targets for _known_,\\n_established_ and _active_ big ledger peers which work in a similar way that\\nsuch targets work for ledger peers.  The [ouroboros-network#4662] PR is\\ncurrently in review.\\n\\nAs part of this work we also identified a bug which would prevent a node to\\nconnect to itself.  Such connections are not easily detectable and are expected\\nto be dropped by the churn mechanism, nonetheless they should not be buggy.\\nThe failure was discovered thanks to our e2e simulation of diffusion using\\n`io-sim` & property based testing.\\n\\nThe PR also refactors the heart of the `ouroboros-network` interface reducing\\ntechnical debt that would otherwise accumulate.\\n\\nWe also identified a possible improvement in the churn mechanism, which will be\\nimplemented in Q3.  Churn needs to await for peers to terminate, we can\\nimprove the synchronisation. [ouroboros-network#4617]\\n\\n#### Ecosystem P2P Deployment Progress\\n\\nWe reached __50% of stake in hands of SPOs who run at least on P2P relay__.  Now\\nalso Emurgo and CF are running some P2P relays. Also 20% of IOG relays are\\nrunning in P2P mode.\\n\\n![P2P Progress](/images/network/2023-07-06-p2p-progress.png)\\n\\n#### Peer Sharing\\n\\nWe implemented _bootstrapping for peer sharing_ (also known as light peer\\nsharing).  New downstream (inbound) peers are now added to the _known peers_ of\\nthe _outbound governor_.  Together with peer sharing this allows for non\\nregistered relays to propagate through the network. [ouroboros-network#3596]\\n\\n_Please note that peer sharing is disabled by default and is not considered safe\\nuntil Bootstrap Peers (see below) or Genesis is implemented._\\n\\n#### Diffusion (P2P)\\n\\n- We designed a feature which will reduce the load on IOG relays (in future\\n  also run by CF & Emurgo).  The feature consists of two parts.  A new source\\n  of peers called _bootstrap peers_ (obtained from via an https request), the\\n  ability to switch from bootstrap peers to ledger peers if the node is synced\\n  (we are collaborating with the consensus team on the interface [Bootstrap\\n  Peers IER][bootstrap-ier]).   This feature will be completed in Q3.\\n  [ouroboros-network#4530]\\n\\n- We published a blog post about [P2P design & implementation][p2p-blog].\\n\\n- Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:\\n  [ouroboros-network#4559].\\n\\n- We merged changes which allow the consensus layer to start / stop block\\n  forging thread.  This will allow to deploy P2P block producing nodes which\\n  serve as a live backup node. [ouroboros-consensus#140]\\n\\n- We fixed a few bugs in local root peers DNS resolution service:\\n  [ouroboros-network#4583], [ouroboros-network#4571].\\n\\n- We limited concurrency of DNS name resolutions: [ouroboros-network#4596].\\n\\n- Galois Inc implemented query option for Handshake: [ouroboros-network#4256].\\n\\n- We fixed handshake query timeout: [ouroboros-network#4608].\\n\\n- We implemented warm valency for local root peers.  This can help when using\\n  DNS names in local root peers which resolve to many IP addresses. [ouroboros-network#4575]\\n\\n- We merged handshake changes which allow query protocol versions.  Thanks to\\n  James Parker from Galois Inc.: [ouroboros-network#4256], [cardano-cli#30].\\n\\n### Other Improvements & Developments\\n\\n#### CDDL\\n\\n- We added `node-to-node` and `node-to-client` CDDL specs / tests for encoding\\n  of `NodeToNodeVersionData` and `NodeToClientVersionData`.  \\n\\n- We clarified an inconsistency between CDDL spec and implementation which is\\n  highly polymorphic.  We designed and implemented a fix for `tx-submission`\\n  and `local-tx-submission` mini-protocols.  Specs for other mini-protocols will\\n  be improved at a later stage. [ouroboros-network#4580]\\n\\n#### [Cardano Ping][cardano-ping]\\n\\n- `cardano-ping` command was deprecated in favour of `cardano-cli ping` (the\\n  transition was done by the `node` team).\\n\\n- Support for `node-to-client` protocol using Unix sockets.\\n  [ouroboros-network#4601]\\n\\n- Support for `NodeToNodeV_11` and `NodeToClientV_16`, [ouroboros-network#4587]\\n\\n- `cardano-cli ping` is now using _ISO8601_ format for timestamps.  Formatting of\\n  messages was improved. [ouroboros-network#4593]\\n\\n- `cardano-cli ping` has a new `--query-versions` flag which allows to query\\n    supported versions by the remote node.  This is supported by\\n  `cardano-node-8.1.0`. [ouroboros-network#4589], [cardano-node#5313], [cardano-cli#30]\\n\\n#### [IOSim][io-sim]\\n\\n- We fixed timeouts & delays in `io-classes` in a series of PRs: [io-sim#81],\\n  [io-sim#82], [io-sim#86], [io-sim#87].\\n\\n- We released `strict-stm-1.1.0.1` on Hackage which fixed a bug in package\\n  description file: [io-sim#101].\\n\\n#### [Typed Protocols][typed-protocols]\\n\\n- We published haddocks of `typed-protocols` at\\n  https://input-output-hk.github.io/typed-protocols\\n\\n#### [Cardano Client][cardano-client]\\n\\n- We fixed a bug in `cardano-client-0.1.0.2` release which results in clients\\n  (e.g. `db-sync`) negotiate an experimental protocol version.\\n\\n#### Technical debt\\n\\n- After the split between consensus & network, we made `cardano-client`\\n  independent of `ouroboros-consensus-diffusion`: [ouroboros-network#4526].\\n\\n- We wrap all exceptions in `DiffusionError`: [ouroboros-network#4537], [cardano-node#5356].\\n\\n#### CI improvements\\n\\n- We switched to use GitHub merge queues in `ouroboros-network`, `io-sim` and\\n  `typed-protocols` repositories; [typed-protocols#30], [ouroboros-network#4546].\\n\\n- We cleaned & updated scripts which run on CI.\\n\\n- We implemented a script to verify & release packages on CHaP; [ouroboros-network#4542], [ouroboros-network#4573].\\n\\n- We implemented a new CI script and cleaned existing ones:\\n  [ouroboros-network#4572].\\n\\n- We don\'t install cryptographic libraries on CI anymore as none of our\\n  packages requires them; [ouroboros-network#4539].\\n\\n- Improved caching of dependencies: [ouroboros-network#4553].\\n\\n- We made it possible to trigger building haddock manually:\\n  [ouroboros-network#4549].\\n\\n#### GHC 9.4 & 9.6\\n\\nWe made all repositories under our control compile with `ghc-9.4` and `ghc-9.6`\\nwhich includes `ouroboros-network`, `io-sim`, `typed-protocols` and\\n`Win32-network`.\\n\\n### Next steps\\n\\nWe will continue towards our [aspirational roadmap][roadmap].\\n\\n* We will continue reviewing eclipse evasion.\\n* As [ouroboros-consensus#140] was merged, we are making progress towards\\n  releasing P2P on block production nodes.  We hope to analyse performance\\n  regression on such nodes observed on the benchmarking cluster. [roadmap-3887]\\n* We are also focused on [roadmap-3969]. Note that it was expanded in Q2.\\n\\n\\n[typed-protocols]: https://github.com/input-output-hk/typed-protocols\\n[typed-protocols#30]: https://github.com/input-output-hk/typed-protocols/pull/30\\n\\n[io-sim]: https://github.com/input-output-hk/io-sim\\n[io-sim#81]: https://github.com/input-output-hk/io-sim/pull/81\\n[io-sim#82]: https://github.com/input-output-hk/io-sim/pull/82\\n[io-sim#86]: https://github.com/input-output-hk/io-sim/pull/86\\n[io-sim#87]: https://github.com/input-output-hk/io-sim/pull/87\\n[io-sim#101]: https://github.com/input-output-hk/io-sim/pull/101\\n\\n\\n[cardano-node#5313]: https://github.com/input-output-hk/cardano-node/pull/5313\\n[cardano-node#5356]: https://github.com/input-output-hk/cardano-node/pull/5356\\n[cardano-cli#30]: https://github.com/input-output-hk/cardano-cli/pull/30/\\n\\n[cardano-client]: https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client\\n[cardano-ping]: https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping\\n[ouroboros-network#3596]: https://github.com/input-output-hk/ouroboros-network/issues/3596\\n[ouroboros-network#4256]: https://github.com/input-output-hk/ouroboros-network/pull/4256\\n[ouroboros-network#4256]: https://github.com/input-output-hk/ouroboros-network/pull/4256\\n[ouroboros-network#4526]: https://github.com/input-output-hk/ouroboros-network/pull/4526\\n[ouroboros-network#4530]: https://github.com/input-output-hk/ouroboros-network/issues/4530\\n[ouroboros-network#4537]: https://github.com/input-output-hk/ouroboros-network/issues/4537\\n[ouroboros-network#4539]: https://github.com/input-output-hk/ouroboros-network/issues/4539\\n[ouroboros-network#4540]: https://github.com/input-output-hk/ouroboros-network/issues/4540\\n[ouroboros-network#4542]: https://github.com/input-output-hk/ouroboros-network/issues/4542\\n[ouroboros-network#4546]: https://github.com/input-output-hk/ouroboros-network/pull/4546\\n[ouroboros-network#4549]: https://github.com/input-output-hk/ouroboros-network/issues/4549\\n[ouroboros-network#4553]: https://github.com/input-output-hk/ouroboros-network/issues/4553\\n[ouroboros-network#4559]: https://github.com/input-output-hk/ouroboros-network/pull/4559\\n[ouroboros-network#4571]: https://github.com/input-output-hk/ouroboros-network/pull/4571\\n[ouroboros-network#4572]: https://github.com/input-output-hk/ouroboros-network/pull/4572\\n[ouroboros-network#4573]: https://github.com/input-output-hk/ouroboros-network/pull/4573\\n[ouroboros-network#4575]: https://github.com/input-output-hk/ouroboros-network/pull/4575\\n[ouroboros-network#4580]: https://github.com/input-output-hk/ouroboros-network/pull/4580\\n[ouroboros-network#4583]: https://github.com/input-output-hk/ouroboros-network/pull/4583\\n[ouroboros-network#4587]: https://github.com/input-output-hk/ouroboros-network/pull/4587\\n[ouroboros-network#4589]: https://github.com/input-output-hk/ouroboros-network/pull/4589\\n[ouroboros-network#4593]: https://github.com/input-output-hk/ouroboros-network/pull/4593\\n[ouroboros-network#4596]: https://github.com/input-output-hk/ouroboros-network/pull/4596\\n[ouroboros-network#4601]: https://github.com/input-output-hk/ouroboros-network/pull/4601\\n[ouroboros-network#4608]: https://github.com/input-output-hk/ouroboros-network/pull/4608\\n[ouroboros-network#4662]: https://github.com/input-output-hk/ouroboros-network/pull/4662\\n\\n[bootstrap-ier]: https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md\\n[ouroboros-consensus#140]: https://github.com/input-output-hk/ouroboros-consensus/pull/140\\n\\n[io-sim-blog]: https://engineering.iog.io/2023-04-14-io-sim-annoucement\\n[p2p-blog]: https://engineering.iog.io/2023-06-28-p2p\\n\\n[roadmap]: https://github.com/orgs/input-output-hk/projects/39/views/30\\n[roadmap-3887]: https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&itemId=6875505\\n[roadmap-3969]: https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&itemId=8920085"},{"id":"2023-Q2-sre","metadata":{"permalink":"/cardano-updates/quarterly/2023-Q2-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-sre.md","source":"@site/quarterly/2023-Q2-sre.md","title":"SRE Q2 2023 Update","description":"2023-04 - 2023-06","date":"2023-12-07T21:19:58.000Z","formattedDate":"December 7, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/quarterly/tags/sre"}],"readingTime":0.68,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Q2 2023 Update","slug":"2023-Q2-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Network Q2 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q2-network"},"nextItem":{"title":"Performance & Tracing Q3 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q3-performance-and-tracing"}},"content":"## 2023-04 - 2023-06\\n\\n### Main achievements\\n\\nIn addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:\\n- Expanding the darwin CI cluster and adding aarch64 builder support\\n- Adding bare metal capability to bitte clusters\\n- Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality\\n- Creation of pool performance analysis queries and scripting\\n- Migration of testnet metadata server to cardano-world\\n- Cardano shelley qa migration to cardano-world\\n- Cardano sanchonet environment spin up to test Conway era functionality\\n- Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature\\n\\n### Next steps\\n\\n- Continue with the conversion of mainnet to using p2p topology"},{"id":"2023-Q3-performance-and-tracing","metadata":{"permalink":"/cardano-updates/quarterly/2023-Q3-performance-and-tracing","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q3-performance-and-tracing.md","source":"@site/quarterly/2023-Q3-performance-and-tracing.md","title":"Performance & Tracing Q3 2023 Update","description":"2023-07 - 2023-09","date":"2023-12-07T21:19:58.000Z","formattedDate":"December 7, 2023","tags":[{"label":"performance-tracing","permalink":"/cardano-updates/quarterly/tags/performance-tracing"}],"readingTime":3.27,"hasTruncateMarker":false,"authors":[{"name":"Michael Karg","title":"Performance and Tracing Team Lead","url":"https://github.com/mgmeier","imageURL":"https://github.com/mgmeier.png","key":"mgmeier"}],"frontMatter":{"title":"Performance & Tracing Q3 2023 Update","slug":"2023-Q3-performance-and-tracing","authors":"mgmeier","tags":["performance-tracing"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Q2 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q2-sre"},"nextItem":{"title":"SRE Q3 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q3-sre"}},"content":"## 2023-07 - 2023-09\\n\\n### Main achievements\\n\\n* Release benchmarking\\n* Developing and running UTxO-HD benchmarks - in-memory flavour\\n* P2P benchmarks, facilitating rollout\\n* Production-readiness of the new Nomad cluster has been reached\\n* Optimization of and introspection capability for the new tracing system\\n* GHC9 performance investigation (and possible remedy)\\n* Conensus QTAs: first real-world application of prototype\\n#### Release benchmarking\\n\\nOngoing release benchmarking is a crucial safeguard to `cardano-node`\'s release cycle from a performance perspective. We\'ve performed and analyzed benchmarks for node versions `8.2.x` to `8.5` throughout Q3.\\n\\n#### UTxO-HD benchmarks\\n\\nTargeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.\\n\\n#### P2P benchmarks\\n\\nIn Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.\\n\\n#### New nomad cluster\\n\\nThe new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received \\nvarious rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest\\nof our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it\\nready for production use.\\n\\n#### New tracing system\\n\\nOur new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that\\nit is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  \\n\\nAdditionally, in Q3 we equipped the system with an introspection capability. This is now used for generating\\nend user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.\\n\\n#### GHC9 performance\\n\\nIn Q3, a joint investigation with DevX into GHC9\'s behaviour revealed where and how GHC9 misses opportunities for\\noptimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable\\nthose optimizations - which is still being validated.\\n\\n#### Consensus QTAs\\n\\nIn collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations\'\\nperformance characteristics. It\'s now applicable, and being applied, to a real-world task - namely\\ngathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.\\n\\n### Next steps\\n\\n#### Benchmarking:\\n\\nIn Q4, the focus will be on:\\n* facilitating the next mainnet release\\n* benchmarking runs in the Conway era\\n* developing benchmarks / workloads for Conway-exclusive actions\\n* implementing a specialized benchmark setup for the UTxO-HD on-disk variant\\n* developing new Plutus benchmarks to safeguard Plutus V3\\n* benchmarks regarding the rollout of P2P\\n\\n#### Performance\\n\\nFor certain blocking performance issues we\'ve located the cause, or even found a solution in a cross-team effort. In Q4 we\'ll advance that work to ensure the ongoing\\nrelease cycle for mainnet, as well as make GHC9 become a viable release platform.\\n\\n#### New tracing system\\n\\nFor the new tracing system, we\'ll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.\\n\\n#### UTxO-HD monitoring\\n\\nWe\'ll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.\\n\\n#### Nomad backend\\n\\nFrom Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.\\n\\n#### Workbench\\n\\nWe will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with `cardano-node`.\\n\\n#### Consensus component QTAs (co-development)\\n\\nIn Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation."},{"id":"2023-Q3-sre","metadata":{"permalink":"/cardano-updates/quarterly/2023-Q3-sre","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q3-sre.md","source":"@site/quarterly/2023-Q3-sre.md","title":"SRE Q3 2023 Update","description":"2023-07 - 2023-09","date":"2023-12-07T21:19:58.000Z","formattedDate":"December 7, 2023","tags":[{"label":"sre","permalink":"/cardano-updates/quarterly/tags/sre"}],"readingTime":0.905,"hasTruncateMarker":false,"authors":[{"name":"John Lotoski","title":"Service Reliability Engineer","url":"https://github.com/johnalotoski","imageURL":"https://github.com/johnalotoski.png","key":"johnalotoski"}],"frontMatter":{"title":"SRE Q3 2023 Update","slug":"2023-Q3-sre","authors":"johnalotoski","tags":["sre"],"hide_table_of_contents":false},"prevItem":{"title":"Performance & Tracing Q3 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q3-performance-and-tracing"},"nextItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2023-04-25-consensus"}},"content":"## 2023-07 - 2023-09\\n\\n### Main achievements\\n\\nIn addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:\\n* Completion of mainnet relay networking conversion to p2p topology\\n* Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality\\n* Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines\\n* Creation of a nix content addressed packages repository, [capkgs](https://github.com/input-output-hk/capkgs):\\n  * To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells\\n* Creation of a cardano performance benchmarking cluster, [cardano-perf](https://github.com/input-output-hk/cardano-perf):\\n  * To replace legacy cluster benchmark tooling\\n* Creation of a cardano cluster composition repository, [cardano-parts](https://github.com/input-output-hk/cardano-parts):\\n  * For enabling multi-cluster, multi-role cardano network deployments\\n* Creation of a cardano testnets repository, [cardano-playground](https://github.com/input-output-hk/cardano-playground):\\n  * Utilizing cardano-parts for testnet deployments\\n* Creation of a sanchonet demo repository, [sanchonet-demo](https://github.com/input-output-hk/sanchonet-demo):\\n  * Utilizing cardano-parts for fast sanchonet test environment and demo purposes\\n\\n### Next steps\\n\\n* Continue with migration of cardano-world testnets to cardano-playground\\n* Proceed with spinup of mainnet p2p bootstrap cluster\\n* Scale down mainnet non-p2p legacy cluster at the appropriate time"},{"id":"2023-04-25-consensus","metadata":{"permalink":"/cardano-updates/quarterly/2023-04-25-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-25-consensus.md","source":"@site/quarterly/2023-04-25-consensus.md","title":"Consensus Quarterly Update","description":"Consensus Quarterly Update","date":"2023-04-25T00:00:00.000Z","formattedDate":"April 25, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/quarterly/tags/consensus"}],"readingTime":2.3,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Quarterly Update","slug":"2023-04-25-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"SRE Q3 2023 Update","permalink":"/cardano-updates/quarterly/2023-Q3-sre"},"nextItem":{"title":"Network Q1 2023 Update","permalink":"/cardano-updates/quarterly/2023-04-04-network"}},"content":"## Consensus Quarterly Update\\n## 2023-01 - 2023-03\\n\\n### Main achievements\\n\\n#### UTxO HD\\n\\n- We finished the testing activities for the prototype, which involved adding\\n  new tests, and fixing and enabling temporarily disabled tests.\\n- We spent a substantial amount of effort refactoring and cleaning the\\n  prototype.\\n- We audited the UTxO HD prototype to make sure it can accommodate the migration\\n  of other tables (eg stake-keys registration) from memory to disk. The result\\n  of the audit was positive.\\n- We ran ad-hoc benchmarks for reading keys and flushing values to disk. No\\n  unexpected costs found.\\n- We ran the first system level benchmarks. The performance regressions reported\\n  were due to an unrealistic snapshotting rate. We need to re-run them again\\n  after we design a more fine grained locking mechanism.\\n\\n#### Genesis\\n\\n- We elaborated a roadmap of the remaining work for Genesis.\\n- We presented the design to the IOG Researchers and PNSol on February 20. The\\n  design was well received. We updated the Genesis design with the researcher\'s\\n  feedback.\\n    - We plugged the new DoS vector identified during the aforementioned\\n      presentation.\\n- We developed a generator for adversarial leader schedules that satisfy key\\n  Ouroboros properties, which will be used to test the Genesis design.\\n    - The generator enables use of smaller Ouroboros parameters, which makes\\n      extrema more likely and counterxamples easier interpret.\\n- We wrote up the latest design iteration.\\n- We continued benchmarking the Chain Sync Jumping prototype. In particular:\\n    - We debugged the prototype\'s performance regression, and unmasked the\\n      actual cause by patching our initial theory (bad queuing behavior)\\n    - We identified and validated the actual cause (a pathological case in\\n      BlockFetch tiebreaker).\\n\\n#### Support\\n\\n- We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother\\n  to serve a local immutable DB.\\n\\n#### Conway era\\n\\n- We integrated the Conway era into consensus.\\n\\n#### Technical debt\\n\\n- We fixed a bug with followers, which was discovered by property tests.\\n- We developed a DSL for specifying and running ChainDB test cases.\\n- We fixed failing tests with iterators.\\n- We created micro-benchmarks for adding transactions to the mempool.\\n\\n#### Fostering collaboration\\n\\n- We released a new technical documentation site for consensus.\\n- We factored out several packages to external repositories. Some of this work\\n  originated in the UTxO HD workstream.\\n\\n### Next steps\\n\\n#### UTxO HD\\n\\n- https://github.com/input-output-hk/ouroboros-consensus/issues/28\\n\\n#### Genesis\\n\\n- https://github.com/input-output-hk/ouroboros-consensus/issues/33\\n- https://github.com/input-output-hk/ouroboros-consensus/issues/32\\n- https://github.com/input-output-hk/ouroboros-consensus/issues/31\\n\\n#### Support\\n\\n- Design Consensus side of hardfork-enactment in the Voltaire phase\\n  ([#4180](https://github.com/input-output-hk/ouroboros-network/issues/4180)).\\n- Estimate the number of file descriptors Consensus needs\\n  [#20](https://github.com/input-output-hk/ouroboros-consensus/issues/20).\\n\\n#### Tech debt\\n\\n- Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define\\n  for consensus. Pick one and implement benchmarks for it.\\n\\n#### Fostering collaboration\\n\\n- Onboard a new team member."},{"id":"2023-04-04-network","metadata":{"permalink":"/cardano-updates/quarterly/2023-04-04-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-04-network.md","source":"@site/quarterly/2023-04-04-network.md","title":"Network Q1 2023 Update","description":"2023-01 - 2023-03","date":"2023-04-04T00:00:00.000Z","formattedDate":"April 4, 2023","tags":[{"label":"network","permalink":"/cardano-updates/quarterly/tags/network"}],"readingTime":2.62,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Q1 2023 Update","slug":"2023-04-04-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2023-04-25-consensus"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/quarterly/2023-04-03-ledger"}},"content":"## 2023-01 - 2023-03\\n\\n### Main achievements\\n\\n#### Gradual dynamic P2P release on mainnet\\n\\nWe released two version of `cardano-node` with dynamic P2P capabilities:\\n\\n* [`1.35.6`][cardano-node-1.35.6]\\n  - we found and fixed a bug in exception handling in `peer-state-actions`\\n    [pull-4357]\\n  - we found and fixed a busy loop when demoting a peer from hot to warm [pull-4385] \\n* [`1.35.7`][cardano-node-1.35.7]\\n  - includes interoperability in the legacy non-p2p network stack [pull-4467]\\n* we fixed a busy loop of demotion & promotions: `warm -> hot -> warm`\\n  [pull-4485] /it will be included in `cardano-node-8.0.0` release/.\\n\\nCurrently there are more than 200 P2P relays on mainnet.\\n\\n#### Peer Sharing\\n\\nWe implemented /peer sharing/ [pull-4019] which will be available as an\\nexperimental feature in one of the future `cardano-node` releases.\\n\\nWe implemented /light peer sharing/, e.g. adding inbound connections to the set\\nof known peers of the outbound governor, which allows to bootstrap relays not\\nregistered on chain.  This complements peer sharing.  The [pull-4277] is in\\nlate review stages.\\n\\n#### Eclipse Evasion\\n\\nWe finalised design of eclipse evasion and we started implementing it.  We\\nhave an initial implementation (not merged). We are in the process of extending\\nour test suite to cover new implementation details: [issue-3886], [pull-4462].\\n\\n#### Cardano Network Service Assurance\\n\\nGalois has been making progress on _Cardano Network Service Assurance_ project.\\n\\n* In cardano-node, they have developed a `datapoint` abstraction that creates\\n  a queue of (existing) log events, they now have two such `datapoint`s (of log\\n  events) implemented.\\n\\n* They have developed a `datapoint` client executable that can connect to a node\\n  which serves the \\"new tracing\\".\\n\\n* They have been exploring approaches for the consolidation and analysis of\\n  `datapoint` data to extract actionable network health status.\\n\\n#### Cardano-Node\\n\\n* We made it possible to configure accepted connections limit [pull-4902].\\n\\n#### Testing improvements\\n\\n* We fixed a bug in network simulation implementation of TCP simultaneous open [pull-4265].\\n\\n* We introduced header-body split in the diffusion simulation [pull-4419] (in review).\\n\\n* We introduced initiator only nodes in the diffusion simulation [pull-4280].\\n\\n* We fixed a connection-manager test failure [issue-4370].\\n\\n#### Technical Debt\\n\\n* We refactored `Snocket` interface decoupling it from the multiplexer\\n  [pull-4260]. This simplified some aspects of the KES agent implementation.\\n\\n* We introduces a record for CBOR codecs which are used for various data\\n  structures by mini-protocol codecs [pull-4430].\\n\\n#### Documentation\\n\\n* We explained some limitations of CDDL in our technical report [pull-4351].\\n\\n#### IO-Sim\\n\\n* We fixed implementation of `MVar`\'s [pull-70].\\n\\n#### NoThunks\\n\\n* We published a new version of [`nothunks`] library to Hackage.\\n\\n### Next steps\\n\\n* Finish implementation & testing of eclipse evasion [issue-3886].\\n* Optimise connectivity to peers behind firewall [issue-4381].\\n* Finish the work on enabling block production dynamically to allow using P2P\\n  on block producers [issue-3159].\\n* If time permits we would like also to reserve some time for finishing\\n  publication of `io-sim` to Hackage.\\n\\n\\n[cardano-node-1.35.6]: https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6\\n[cardano-node-1.35.7]: https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7\\n\\n[pull-4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[pull-4277]: https://github.com/input-output-hk/ouroboros-network/pull/4277\\n[pull-4260]: https://github.com/input-output-hk/ouroboros-network/pull/4260\\n[pull-4265]: https://github.com/input-output-hk/ouroboros-network/pull/4265\\n[pull-4280]: https://github.com/input-output-hk/ouroboros-network/pull/4280\\n[pull-4351]: https://github.com/input-output-hk/ouroboros-network/pull/4351\\n[pull-4357]: https://github.com/input-output-hk/ouroboros-network/pull/4357\\n[pull-4385]: https://github.com/input-output-hk/ouroboros-network/pull/4385\\n[pull-4430]: https://github.com/input-output-hk/outoboros-network/pull/4430\\n[pull-4460]: https://github.com/input-output-hk/outoboros-network/pull/4460\\n[pull-4462]: https://github.com/input-output-hk/outoboros-network/pull/4462\\n[pull-4465]: https://github.com/input-output-hk/outoboros-network/pull/4465\\n[pull-4467]: https://github.com/input-output-hk/outoboros-network/pull/4467\\n[pull-4419]: https://github.com/input-output-hk/outoboros-network/pull/4419\\n\\n[pull-4902]: https://github.com/input-output-hk/cardano-node/pull/4902\\n\\n[issue-3159]: https://github.com/input-output-hk/ouroboros-network/issues/3159\\n[issue-3886]: https://github.com/input-output-hk/ouroboros-network/issues/3886\\n[issue-4370]: https://github.com/input-output-hk/ouroboros-network/issues/4370\\n[issue-4381]: https://github.com/input-output-hk/ouroboros-network/issues/4381\\n\\n[pull-70]: https://github.com/input-output-hk/io-sim/pull/70\\n\\n[`nothunks`]: https://hackage.haskell.org/package/nothunks"},{"id":"2023-04-03-ledger","metadata":{"permalink":"/cardano-updates/quarterly/2023-04-03-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-03-ledger.md","source":"@site/quarterly/2023-04-03-ledger.md","title":"Ledger Team Update","description":"Ledger Quarterly Update","date":"2023-04-03T00:00:00.000Z","formattedDate":"April 3, 2023","tags":[{"label":"ledger","permalink":"/cardano-updates/quarterly/tags/ledger"}],"readingTime":6.405,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2023-04-03-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Network Q1 2023 Update","permalink":"/cardano-updates/quarterly/2023-04-04-network"},"nextItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2023-01-18-consensus"}},"content":"## Ledger Quarterly Update\\n## 2023-01 - 2023-03\\n\\n### Main achievements\\n\\n#### CIPs\\n\\n* **Entering the Voltaire phase** -\\n  CIP-1694 received a major update after participation in the design has expanded to\\n  more and more people, including those who attended the Colorado workshop.\\n  See [CIP-1694](https://github.com/cardano-foundation/CIPs/pull/380).\\n* **Ledger CIP category** -\\n  The ledger team continues to embrace the CIP process, and has begun the process of\\n  registering the ledger as an official CIP category.\\n  See [CIP-84](https://github.com/cardano-foundation/CIPs/pull/456).\\n* **Ledger serialization** -\\n  A CIP for the ledger serialization deprecation cycle has been accepted.\\n  See [CIP-80](https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080).\\n\\n#### Formal ledger model\\n\\nOur new formal specifications backed by Agda have seen a lot of progress.\\nThe majority of the ideas in CIP-1694 are now present, and we have made enough progress\\nthat we can now safely say that the PDF produced by the Agda model will be the\\nofficial ledger specification for the Conway ledger era.\\nSee [the repository](https://github.com/input-output-hk/formal-ledger-specifications).\\n\\n\\n#### Conway ledger era\\n\\nProgress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.\\nThe major component still missing is the DRep stake distribution, which still presents some\\ntechnical challenges.\\n\\n[[pull-3176]]\\n[[pull-3216]]\\n[[pull-3226]]\\n[[pull-3291]]\\n[[pull-3326]]\\n[[pull-3330]]\\n[[pull-3339]]\\n\\n#### DRep stake distribution computation\\n\\nAdding another large stake distribution to the ledger state must proceed with caution.\\nWe do not want the memory used by the node to increase too much,\\nand performance problems can lead to reduced block production.\\nWe have prototyped, tested, and benchmarked several approaches that could give us\\nthe current DRep stake distribution at each epoch boundary.\\nThis has very important implications, since we want every ADA holder to be able to at any\\ntime (such as during a contentious vote) register themselves as a DRep and still have time\\nto vote themselves on the issue.\\n\\n[[pull-3344]]\\n[[pull-3353]]\\n[[pull-3364]]\\n\\n#### Integration work\\n\\nThe ledger has made some wonderful improvements over the past six months,\\nbut which entail a significant amount of integration efforts:\\n\\n* Our new versioned CBOR schemes\\n* Individual deposit tracking\\n* An improved cross-era interface utilizing lenses\\n* A new ledger API\\n* Re-arranging the ledger stake in preparation for CIP-1694\\n* Versioning our Haskell packages\\n  using [CHaPs](https://github.com/input-output-hk/cardano-haskell-packages).\\n* Consistent conventions for variable names\\n\\n\\n[[pull-3279]]\\n[[pull-3282]]\\n[[pull-3288]]\\n[[pull-3289]]\\n[[pull-3292]]\\n[[pull-3297]]\\n[[pull-3298]]\\n[[pull-3299]]\\n[[pull-3300]]\\n[[pull-3302]]\\n[[pull-3303]]\\n[[pull-3308]]\\n[[pull-3342]]\\n[[pull-3345]]\\n[[pull-3356]]\\n[[pull-3357]]\\n[[pull-3360]]\\n[[pull-3361]]\\n[[pull-3363]]\\n[[pull-4349]]\\n[[pull-378]]\\n[[pull-376]]\\n[[pull-373]]\\n[[pull-370]]\\n[[pull-361]]\\n[[pull-4976]]\\n[[pull-5013]]\\n\\n#### Deposit tracking\\n\\nIndividual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.\\nDeposits were returned according to the current protocol parameters.\\nWhen the values of these two protocol parameters change, the deposit pot\\nis adjusted by adding to, or removing from, the reserves.\\n\\nThis has several problems:\\n* Most people expect a deposit to be paid back exactly.\\n* We cannot increase the deposit amount once the reserves hits zero.\\n* If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.\\n* Because of the problems above, it is going to be incredibly hard to ever change the values.\\n* There is a serious issue involving hard forks.\\n  The consensus layer makes the decision about whether or not to enact a hard fork based on\\n  the protocol parameter update state two stability windows before the end of the epoch.\\n  However, the ledger will reject a protocol parameter update on the epoch boundary\\n  if the deposit pot adjustments cannot be reconciled with the reseve pot.\\n  This means that if quorum is met regarding changing the major protocol version,\\n  but the update is rejected on the epoch boundary, consensus will change the era but the\\n  ledger will not change the major protocol version, leaving the ledger in a split-brain state.\\n\\nBecause we never actually changed the values of the two deposits amounts in the protocol parameters\\non mainnet, we were able to retroactively change the behavior.\\nWe made the following changes:\\n  * Individual deposits are tracked in the `DState`.\\n  * The amount deposited is always returned.\\n\\n[[pull-3195]]\\n[[pull-3202]]\\n[[pull-3217]]\\n\\n#### New ledger API\\n\\nWe have significantly built up the ledger API.\\nWe will eventually replace much of the `cardano-api` in the node repository with this ledger API.\\n\\n[[pull-3242]]\\n[[pull-3248]]\\n[[pull-3328]]\\n\\n#### Constraint-based generators\\n\\nOur largest scale property tests generate an initial ledger state and a long sequence of valid blocks\\nwhich span several epochs, mimicking a real network.\\nThese tests are, in theory, excellent for checking properties.\\nThey are, however, very difficult to maintain and are not as random as we would like\\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).\\n\\nWe have a new declaritive infrastructure for building constraint-based generators,\\nwhich instead generate a random ledger state representative of not just an initial state,\\nbut also those representative of the end result of a long sequence of valid blocks.\\nMoreover, these generators are very fast and are much more random than our old generators.\\nBefore we can start using them for our existing property tests, however, we still need to\\nexpand them to generate a valid block for a given ledger state.\\n\\n[[pull-3219]]\\n\\n#### Technical debt\\n\\nWe continued to address technical debt as much as we can.\\n\\n[[pull-3167]]\\n[[pull-3170]]\\n[[pull-3172]]\\n[[pull-3175]]\\n[[pull-3184]]\\n[[pull-3205]]\\n[[pull-3208]]\\n[[pull-3210]]\\n[[pull-3212]]\\n[[pull-3218]]\\n[[pull-3222]]\\n[[pull-3223]]\\n[[pull-3224]]\\n[[pull-3225]]\\n[[pull-3229]]\\n[[pull-3239]]\\n[[pull-3241]]\\n[[pull-3244]]\\n[[pull-3245]]\\n[[pull-3249]]\\n[[pull-3260]]\\n[[pull-3263]]\\n[[pull-3264]]\\n[[pull-3268]]\\n[[pull-3269]]\\n[[pull-3270]]\\n[[pull-3274]]\\n[[pull-3276]]\\n[[pull-3277]]\\n[[pull-3286]]\\n[[pull-3290]]\\n[[pull-3295]]\\n[[pull-3296]]\\n[[pull-3306]]\\n[[pull-3307]]\\n[[pull-3310]]\\n[[pull-3311]]\\n[[pull-3316]]\\n[[pull-3320]]\\n[[pull-3323]]\\n[[pull-3327]]\\n[[pull-3331]]\\n[[pull-3332]]\\n[[pull-3333]]\\n[[pull-3338]]\\n[[pull-3341]]\\n[[pull-3347]]\\n[[pull-3350]]\\n[[pull-3351]]\\n[[pull-3352]]\\n[[pull-3354]]\\n\\n##### Critical fixes\\n\\nWe fixed two critical issues:\\n* Growing block production delay on the epoch boundary: [[pull-3209]]\\n* Unexpected node shutdown from `balanceR`: [[pull-3343]]\\n\\n### Next steps\\n\\n* **Conway spec** -\\n  Complete the first version of the conway formal specification.\\n* **DRep stake distribution** -\\n  Have the ledger compute the DRep stake distribution with acceptible performance.\\n* **Devnet ready** -\\n  Have the Haskell implementation of the conway era in sync with the formal specification,\\n  and integrate the changes with consensus and node.\\n  All the details might not be finalized, but the wire specification and the API should\\n  be stable so that conway can be placed on a devnet for tool builders to start integrating with.\\n* **Plutus V3** -\\n  Integrate Plutus V3 into the ledger, including a new script context which supports DReps.\\n\\n### More details\\n\\nThis quarterly report was based off of the following fortnightly ones:\\n\\n* [2023-01-05](2023-01-05-ledger)\\n* [2023-01-19](2023-01-19-ledger)\\n* [2023-02-02](2023-02-02-ledger)\\n* [2023-02-17](2023-02-17-ledger)\\n* [2023-03-03](2023-03-03-ledger)\\n* [2023-03-17](2023-03-17-ledger)\\n* [2023-03-31](2023-03-31-ledger)\\n\\n[pull-3167]: https://github.com/input-output-hk/cardano-ledger/pull/3167\\n[pull-3170]: https://github.com/input-output-hk/cardano-ledger/pull/3170\\n[pull-3172]: https://github.com/input-output-hk/cardano-ledger/pull/3172\\n[pull-3175]: https://github.com/input-output-hk/cardano-ledger/pull/3175\\n[pull-3176]: https://github.com/input-output-hk/cardano-ledger/pull/3176\\n[pull-3184]: https://github.com/input-output-hk/cardano-ledger/pull/3184\\n[pull-3195]: https://github.com/input-output-hk/cardano-ledger/pull/3195\\n[pull-3202]: https://github.com/input-output-hk/cardano-ledger/pull/3202\\n[pull-3205]: https://github.com/input-output-hk/cardano-ledger/pull/3205\\n[pull-3208]: https://github.com/input-output-hk/cardano-ledger/pull/3208\\n[pull-3209]: https://github.com/input-output-hk/cardano-ledger/pull/3209\\n[pull-3210]: https://github.com/input-output-hk/cardano-ledger/pull/3210\\n[pull-3212]: https://github.com/input-output-hk/cardano-ledger/pull/3212\\n[pull-3214]: https://github.com/input-output-hk/cardano-ledger/pull/3214\\n[pull-3215]: https://github.com/input-output-hk/cardano-ledger/pull/3215\\n[pull-3216]: https://github.com/input-output-hk/cardano-ledger/pull/3216\\n[pull-3217]: https://github.com/input-output-hk/cardano-ledger/pull/3217\\n[pull-3218]: https://github.com/input-output-hk/cardano-ledger/pull/3218\\n[pull-3219]: https://github.com/input-output-hk/cardano-ledger/pull/3219\\n[pull-3222]: https://github.com/input-output-hk/cardano-ledger/pull/3222\\n[pull-3223]: https://github.com/input-output-hk/cardano-ledger/pull/3223\\n[pull-3224]: https://github.com/input-output-hk/cardano-ledger/pull/3224\\n[pull-3225]: https://github.com/input-output-hk/cardano-ledger/pull/3225\\n[pull-3226]: https://github.com/input-output-hk/cardano-ledger/pull/3226\\n[pull-3229]: https://github.com/input-output-hk/cardano-ledger/pull/3229\\n[pull-3239]: https://github.com/input-output-hk/cardano-ledger/pull/3239\\n[pull-3241]: https://github.com/input-output-hk/cardano-ledger/pull/3241\\n[pull-3242]: https://github.com/input-output-hk/cardano-ledger/pull/3242\\n[pull-3244]: https://github.com/input-output-hk/cardano-ledger/pull/3244\\n[pull-3245]: https://github.com/input-output-hk/cardano-ledger/pull/3245\\n[pull-3248]: https://github.com/input-output-hk/cardano-ledger/pull/3248\\n[pull-3249]: https://github.com/input-output-hk/cardano-ledger/pull/3249\\n[pull-3260]: https://github.com/input-output-hk/cardano-ledger/pull/3260\\n[pull-3263]: https://github.com/input-output-hk/cardano-ledger/pull/3263\\n[pull-3264]: https://github.com/input-output-hk/cardano-ledger/pull/3264\\n[pull-3268]: https://github.com/input-output-hk/cardano-ledger/pull/3268\\n[pull-3269]: https://github.com/input-output-hk/cardano-ledger/pull/3269\\n[pull-3270]: https://github.com/input-output-hk/cardano-ledger/pull/3270\\n[pull-3274]: https://github.com/input-output-hk/cardano-ledger/pull/3274\\n[pull-3276]: https://github.com/input-output-hk/cardano-ledger/pull/3276\\n[pull-3277]: https://github.com/input-output-hk/cardano-ledger/pull/3277\\n[pull-3279]: https://github.com/input-output-hk/cardano-ledger/pull/3279\\n[pull-3282]: https://github.com/input-output-hk/cardano-ledger/pull/3282\\n[pull-3286]: https://github.com/input-output-hk/cardano-ledger/pull/3286\\n[pull-3288]: https://github.com/input-output-hk/cardano-ledger/pull/3288\\n[pull-3289]: https://github.com/input-output-hk/cardano-ledger/pull/3289\\n[pull-3290]: https://github.com/input-output-hk/cardano-ledger/pull/3290\\n[pull-3291]: https://github.com/input-output-hk/cardano-ledger/pull/3291\\n[pull-3292]: https://github.com/input-output-hk/cardano-ledger/pull/3292\\n[pull-3295]: https://github.com/input-output-hk/cardano-ledger/pull/3295\\n[pull-3296]: https://github.com/input-output-hk/cardano-ledger/pull/3296\\n[pull-3297]: https://github.com/input-output-hk/cardano-ledger/pull/3297\\n[pull-3298]: https://github.com/input-output-hk/cardano-ledger/pull/3298\\n[pull-3299]: https://github.com/input-output-hk/cardano-ledger/pull/3299\\n[pull-3300]: https://github.com/input-output-hk/cardano-ledger/pull/3300\\n[pull-3302]: https://github.com/input-output-hk/cardano-ledger/pull/3302\\n[pull-3303]: https://github.com/input-output-hk/cardano-ledger/pull/3303\\n[pull-3306]: https://github.com/input-output-hk/cardano-ledger/pull/3306\\n[pull-3307]: https://github.com/input-output-hk/cardano-ledger/pull/3307\\n[pull-3308]: https://github.com/input-output-hk/cardano-ledger/pull/3308\\n[pull-3310]: https://github.com/input-output-hk/cardano-ledger/pull/3310\\n[pull-3311]: https://github.com/input-output-hk/cardano-ledger/pull/3311\\n[pull-3316]: https://github.com/input-output-hk/cardano-ledger/pull/3316\\n[pull-3320]: https://github.com/input-output-hk/cardano-ledger/pull/3320\\n[pull-3323]: https://github.com/input-output-hk/cardano-ledger/pull/3323\\n[pull-3326]: https://github.com/input-output-hk/cardano-ledger/pull/3326\\n[pull-3327]: https://github.com/input-output-hk/cardano-ledger/pull/3327\\n[pull-3328]: https://github.com/input-output-hk/cardano-ledger/pull/3328\\n[pull-3330]: https://github.com/input-output-hk/cardano-ledger/pull/3330\\n[pull-3331]: https://github.com/input-output-hk/cardano-ledger/pull/3331\\n[pull-3332]: https://github.com/input-output-hk/cardano-ledger/pull/3332\\n[pull-3333]: https://github.com/input-output-hk/cardano-ledger/pull/3333\\n[pull-3338]: https://github.com/input-output-hk/cardano-ledger/pull/3338\\n[pull-3339]: https://github.com/input-output-hk/cardano-ledger/pull/3339\\n[pull-3341]: https://github.com/input-output-hk/cardano-ledger/pull/3341\\n[pull-3342]: https://github.com/input-output-hk/cardano-ledger/pull/3342\\n[pull-3343]: https://github.com/input-output-hk/cardano-ledger/pull/3343\\n[pull-3344]: https://github.com/input-output-hk/cardano-ledger/pull/3344\\n[pull-3345]: https://github.com/input-output-hk/cardano-ledger/pull/3345\\n[pull-3347]: https://github.com/input-output-hk/cardano-ledger/pull/3347\\n[pull-3350]: https://github.com/input-output-hk/cardano-ledger/pull/3350\\n[pull-3351]: https://github.com/input-output-hk/cardano-ledger/pull/3351\\n[pull-3352]: https://github.com/input-output-hk/cardano-ledger/pull/3352\\n[pull-3353]: https://github.com/input-output-hk/cardano-ledger/pull/3353\\n[pull-3354]: https://github.com/input-output-hk/cardano-ledger/pull/3354\\n[pull-3356]: https://github.com/input-output-hk/cardano-ledger/pull/3356\\n[pull-3357]: https://github.com/input-output-hk/cardano-ledger/pull/3357\\n[pull-3360]: https://github.com/input-output-hk/cardano-ledger/pull/3360\\n[pull-3361]: https://github.com/input-output-hk/cardano-ledger/pull/3361\\n[pull-3363]: https://github.com/input-output-hk/cardano-ledger/pull/3363\\n[pull-3364]: https://github.com/input-output-hk/cardano-ledger/pull/3364\\n\\n[pull-4349]: https://github.com/input-output-hk/ouroboros-network/pull/4349\\n\\n[pull-378]: https://github.com/input-output-hk/cardano-base/pull/378\\n[pull-376]: https://github.com/input-output-hk/cardano-base/pull/376\\n[pull-373]: https://github.com/input-output-hk/cardano-base/pull/373\\n[pull-370]: https://github.com/input-output-hk/cardano-base/pull/370\\n[pull-361]: https://github.com/input-output-hk/cardano-base/pull/361\\n\\n[pull-4976]: https://github.com/input-output-hk/cardano-node/pull/4976\\n[pull-5013]: https://github.com/input-output-hk/cardano-node/pull/5013"},{"id":"2023-01-18-consensus","metadata":{"permalink":"/cardano-updates/quarterly/2023-01-18-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-18-consensus.md","source":"@site/quarterly/2023-01-18-consensus.md","title":"Consensus Quarterly Update","description":"Consensus Quarterly Update","date":"2023-01-18T00:00:00.000Z","formattedDate":"January 18, 2023","tags":[{"label":"consensus","permalink":"/cardano-updates/quarterly/tags/consensus"}],"readingTime":3.205,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Quarterly Update","slug":"2023-01-18-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/quarterly/2023-04-03-ledger"},"nextItem":{"title":"Network Quarterly Update","permalink":"/cardano-updates/quarterly/2023-01-13-network"}},"content":"## Consensus Quarterly Update\\n## 2022-12 - 2023-01\\n\\n### Main achievements\\n\\n#### UTxO HD\\n\\nThe prototype is feature complete and thoroughly tested at the consensus level.\\nIn particular, we invested a lot of time in writing property-test for the\\nmempool, and other crucial new parts of the prototype. Now we are ready to run\\nintegration tests and system-level benchmarks.\\n\\n#### Genesis\\n\\nWe identified and fixed a slowdown in cross-era forecasting that was inhibiting\\nour efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%\\nspeedup in full sync times in the baseline.\\n\\nWe also started prototyping a self-contained implementation of the Genesis\\ndynamics (in particular of the parts intentionally not part of the ChainSync\\nJumping prototype) that furthered our understanding of subtleties and edge\\ncases.\\n\\n#### Support\\n\\n- We worked on designing integration of new VRF and KES crypto into consensus.\\n    - `Crypto` class was split into two parts: `Crypto` and `HeaderCrypto`.\\n    - With the Ledger team\'s help, we refactored `cardano-ledger` to use a proxy\\n      type for VRF.\\n\\n#### Conway era\\n\\n- PR went through its second review round. It is about to be merged, but it got\\n  delayed due to people\'s availability during Christmas break.\\n\\n#### Technical debt\\n\\n- We improved the capabilities of our `io-sim` library, which is key for testing\\n  and simulating Cardano components.\\n- We removed thunks from epoch translations in the ledger, which is important\\n  for reducing memory consumption of the Cardano node.\\n\\n#### Fostering collaboration\\n\\n- We added a tutorial on how to instantiate the Consensus layer to run custom\\n  ledgers. This should be a valuable resource to people looking to roll their\\n  own custom blockchain (either for commercial or research purposes).\\n- We added an overview of consensus to the [top level\\n  documentation](https://input-output-hk.github.io/ouroboros-network/) of\\n  ouroboros-network. This overview describes the consensus components and adds a\\n  hyperlinked map to the modules documentation.\\n\\n### Next steps\\n\\n#### UTxO HD\\n\\n- Evaluate the extensibility of the prototype. Moving the UTxO to disk is only\\n  the first step towards reducing the memory requirements of Cardano node, and\\n  ensuring its long term sustainability. In the future, we plan on moving other\\n  large maps, such as delegation maps. The prototype should be able to\\n  accommodate these changes without any major modifications.\\n- Start the integration with other downstream components, such as the wallet and\\n  db-sync. The idea is to identify and address any potential pain points that\\n  might arise during this integration.\\n- Run integration tests and system-level benchmarks.\\n\\n#### Genesis\\n\\n- Finish benchmarking and tuning the fast-path ChainSync Jumping prototype\\n- Expand and optimize the self-contained implementation of the Disconnect Rule\\n  (including density comparisons and the LoE)\\n- Develop documentation and smoke tests for these components.\\n- Start modifying the ChainSync Client for the LoP and LoR.\\n\\n#### Support\\n\\n- Help the Network team with diagnosing performance regression in block\\n  production.\\n\\n#### Tech debt\\n\\n- Fix property-test failures concerning iterators ([#3999][issue-3999] and\\n  [#4183][issue-4183]).\\n\\n#### Fostering collaboration\\n\\n- Finish [mapping consensus][issue-4145].\\n\\n### Risks \\n\\n#### UTxO HD\\n\\n- Moving other parts of the ledger state to disk might require a major redesign\\n  of the prototype. For instance, if it turns out that the epoch change rules\\n  require access to the *full* ledger state. If this is the case, we might\\n  accept this risk and do the redesign after the initial release of UTxO-HD.\\n- Integration with downstream clients might require more work than we\\n  anticipate.\\n- Access to the benchmarking\'s team time and resources.\\n- Benchmarking results might show significant performance degradation, which\\n  will require additional work if such performance degradation is not accepted\\n  by other stakeholders.\\n- The prototype\'s performance might not be accepted by other stakeholders. Here\\n  we need to clearly communicate that this is necessary to ensure that as the\\n  blockchain size grows, the node can operate within reasonable memory\\n  constraints.\\n\\n[issue-4183]: https://github.com/input-output-hk/ouroboros-network/issues/4183\\n[issue-3999]: https://github.com/input-output-hk/ouroboros-network/issues/3999\\n[issue-4145]: https://github.com/input-output-hk/ouroboros-network/issues/4145"},{"id":"2023-01-13-network","metadata":{"permalink":"/cardano-updates/quarterly/2023-01-13-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-13-network.md","source":"@site/quarterly/2023-01-13-network.md","title":"Network Quarterly Update","description":"Network Quarterly Update","date":"2023-01-13T00:00:00.000Z","formattedDate":"January 13, 2023","tags":[{"label":"network","permalink":"/cardano-updates/quarterly/tags/network"}],"readingTime":4.125,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Quarterly Update","slug":"2023-01-13-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2023-01-18-consensus"},"nextItem":{"title":"Open-Source Update","permalink":"/cardano-updates/quarterly/2023-01-13-open-source"}},"content":"## Network Quarterly Update\\n## 2022-11 - 2023-01\\n\\n### Summary\\n\\nThe primary goal of the networking team was to focus on the single relay\\nrelease of P2P.  We fixed a number of small late bugs, and concluded QA\\n& performance testing.  Although it was discovered a regression in performance\\nof  block production when P2P is enabled, relaying with P2P performs better\\ncomparing to a non p2p.  We concluded that this is not a blocker for the Single\\nRelay Release which is planned shortly.\\n\\n[Peer sharing][pr #4019] has gone through review and final review is\\njust being done right now.  After merging it will still be disabled (hidden\\nbehind a flag) as it\'s not safe without eclipse evasion.  We started\\nimplementing light peer sharing (i.e. include inbound peers into known peer set\\nof the outbound governor).\\n\\nWe started a detailed eclipse evasion design, it will continue in the next\\nquarter.\\n\\nWe also made a major revision of package structure of the network packages.  We\\nended up with a very clean dependency graph ([pr #4155]).\\n\\nArmando Santos delivered a talk at the [ODOPIS 2022] conference on principles\\nof distributed systems in Brussels.  The slides are available [here][ODOPIS-slides].\\n\\nNeil Davies gave an invited seminar on `DeltaQ` at Universit\xe9 Catholique de\\nLouvain.\\n\\nWe also found and fixed a few of bugs:\\n\\n* a bug in keep alive mini-protocol which resulted in warm to cold transitions\\n  to be always executed through a timeout path rather than do a clean demotion\\n  ([pr #4168]).\\n\\n* fixed an assetion failure in the outbound governor ([issue #4177]) \\n\\n- we fixed DNS test failure [issue #4191]\\n\\n### Next steps\\n\\nWe will work towards the next release of P2P for block producer nodes.  This includes:\\n\\n* analysing performance regression for BP nodes when using P2P\\n* finish the work on controlling the block forger through node kernel ([pr #3800])\\n* address [issue #3907] and write a script to analyse deployment of P2P relays\\n\\nWe would like also to push forward eclipse evasion.   Although most of the work\\nhas be done already the release of `io-sim` on `Hackage` will happen in the\\nnext quarter.\\n\\nWe would also like to address [chain-sync timeout issue][issue #4244] recently\\ndiagnosed by Karl Knutsson.\\n\\nIf time permits we would also like to address some technical debt, especially:\\n\\n- [enable nothunk in diffusion tests][issue #3387]\\n- [refactor diffusion testnet simulation][issue #4085]\\n\\n### Risks\\n\\nThe performance regression for block producer with P2P needs to be investigated\\nin the near future.  This is blocker for the release of P2P on BP nodes.\\n\\n### Detailed log\\n\\n#### Contributions to Ouroboros-Network\\n\\n- We added `TraceDemoteLocalAsynchronous`, which enables notification of critical issues for SPOs\\n- We fixed `cardano-ping` compatibility with `NodeToNodeV_10` (P2P, [pr #4165])\\n- We fixed a bug in demotion peers to cold which affected P2P nodes ([commit-61058aa5c2])\\n- Karl Knutsson enhanced `SendFetchRequest` ([commit-bb1c3dddee]), open-source contribution)\\n- We turned `SizeInBytes` into a newtype.\\n- We extended `CONTRIBUTING.md`, `README.md`, added `CODE_OF_CONDUCT`.\\n- We fixed DNS test failure [issue #4191]\\n- We fixed a simulation bug found in [issue #4258]\\n- [pr #4168]\\n- [issue #4177]\\n\\n#### Contributions to Cardano-Node\\n\\n- We maintained the Single Relay Release [pr #4612], (e.g. fixing CI issues,\\n  Rebasing it when necessary, publishing packages to Cardano Haskell Packages);\\n- We enhanced `JSON` serialisation / deserialisation of `NodeToNodeVersion` and `NodeToClientVersion`;\\n\\n#### Contributions to IOSim\\n\\n- We started to use Cardano Haskell Packages for `IOSim` ([pr #48])\\n- We updated change log files\\n- We added support of `ghc-9.4` ([pr #50])\\n\\nWe also addressed the following issues in [pr #57] in order to prepare the package for publication on Hackage:\\n\\n- refactored `io-classes` timers API ([issue #46]);\\n- created a new package `si-timers` which exposes an interface using SI units\\n  and is safe on 32-bit systems ([issue #59]);\\n- added monad transformers instances for classes defined in `io-classes` ([issue #58]);\\n- created `io-classes-mtl` package which includes (experimental) instances for monad transformers;\\n- provide `MonadMonotonicTimeNSec` in `io-classes` and `MonadMonotonicTime` in `si-timers` (so that `io-classes` follow the `base` package);\\n- added  `registerCancellableDelay` in `si-timers` (which allowed us to hide fancy timer api and clean `io-classes`)\\n- added support for `js_HOST_ARCH` (the new GHC JS backend)\\n\\nNote the [pr #57] contains almost 40 commits, and was a major step forward for\\n`io-sim` ecosystem.  We also prepared a draft [pr #4281] which updates\\n`ouroboros-network`.\\n\\nOther changes for `1.0.0.0` release on Hackage:\\n\\n- Refactored test suite ([pr #47])\\n- Updated documentation, cabal files, `CONTRIBUTING`, `SECURITY` documents, etc in [pr #60], currently under review.\\n\\n[commit-61058aa5c2]: https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334\\n[commit-bb1c3dddee]: https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47\\n[issue #3387]: https://github.com/input-output-hk/ouroboros-network/issues/3387\\n[issue #3907]: https://github.com/input-output-hk/ouroboros-network/issues/3907\\n[issue #4085]: https://github.com/input-output-hk/ouroboros-network/issues/4085\\n[issue #4168]: https://github.com/input-output-hk/ouroboros-network/issues/4168\\n[issue #4177]: https://github.com/input-output-hk/ouroboros-network/issues/4177\\n[issue #4191]: https://github.com/input-output-hk/ouroboros-network/issues/4191\\n[issue #4244]: https://github.com/input-output-hk/ouroboros-network/issues/4244\\n[issue #4258]: https://github.com/input-output-hk/ouroboros-network/issues/4258\\n[issue #46]: https://github.com/input-output-hk/io-sim/issues/46\\n[issue #58]: https://github.com/input-output-hk/io-sim/issues/58\\n[issue #59]: https://github.com/input-output-hk/io-sim/issues/59\\n[pr #3800]: https://github.com/input-output-hk/ouroboros-network/pull/3800\\n[pr #4019]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[pr #4155]: https://github.com/input-output-hk/ouroboros-network/pull/4155\\n[pr #4165]: https://github.com/input-output-hk/ouroboros-network/pull/4165\\n[pr #4281]: https://github.com/input-output-hk/cardano-node/pull/4281\\n[pr #4612]: https://github.com/input-output-hk/cardano-node/pull/4612\\n[pr #47]: https://github.com/input-output-hk/io-sim/pull/47\\n[pr #48]: https://github.com/input-output-hk/io-sim/pull/48\\n[pr #49]: https://github.com/input-output-hk/io-sim/pull/49\\n[pr #50]: https://github.com/input-output-hk/io-sim/pull/50\\n[pr #57]: https://github.com/input-output-hk/io-sim/pull/57\\n[pr #60]: https://github.com/input-output-hk/io-sim/pull/60\\n[ODOPIS 2022]: https://sites.uclouvain.be/OPODIS2022/armando-details.html\\n[ODOPIS-slides]: https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf"},{"id":"2023-01-13-open-source","metadata":{"permalink":"/cardano-updates/quarterly/2023-01-13-open-source","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-13-open-source.md","source":"@site/quarterly/2023-01-13-open-source.md","title":"Open-Source Update","description":"Open Source Quarterly Update","date":"2023-01-13T00:00:00.000Z","formattedDate":"January 13, 2023","tags":[{"label":"open-source","permalink":"/cardano-updates/quarterly/tags/open-source"}],"readingTime":2.215,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Open-Source Update","slug":"2023-01-13-open-source","authors":"coot","tags":["open-source"],"hide_table_of_contents":false},"prevItem":{"title":"Network Quarterly Update","permalink":"/cardano-updates/quarterly/2023-01-13-network"},"nextItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2022-11-15-consensus"}},"content":"## Open Source Quarterly Update\\n## 2022-11 - 2023-01\\n\\n### Summary\\n\\nIn the last quarter the open-source initiative delivered a comprehensive report\\non the state of our repositories.  As part of this work stream we\\nidentified the key open-source repositories for the cardano project across all\\nthe projects  From a list of more than 500 repositories (some of which are\\nforks) we identified key repositories which constitute the core of Cardano.\\n20 of them were identified as to be transferred to the future MBO which will\\ngovern Cardano development.  Some where excluded (like [`io-sim`] and\\n[`typed-protocols`]), to be govern by IOG, since they have a much broader\\napplication than Cardano itself, and thus we think their open-source future\\nwill be better outside of the Cardano umbrella.\\n\\nChristian Taylor identified a number of ways we can improve our repositories to\\nmake them more attractive for open-source contributions by analysing each of\\nthem.  This includes adding or improving various documentation files, like\\n`CONTRIBUTING` files, adding code of conduct, improving readme files, issue\\n& pull request templates etc.  Christian also computed various interesting\\nmetrics which gives a very good insight into the development practices: e.g.\\naverage merge ratio, average number of reviews, comments and many more!  The\\npresentation is available [here][open-source-presentation].\\n\\nWe followed with work on the [Cardano Engineering Handbook][CEH].  We included\\na standard code of conduct which is now used by most important projects in the\\nCardano space.  We included `cardano-node`\'s security policy and added\\na responsible disclosure policy.  We also described how roles and\\nresponsibilities should be clarified.  This progress was made by\\na collaborative effort of the Cardano Core, Plutus and Architecture teams, and\\nit wouldn\'t be possible without Michael Peyton Jones, Arnaud Bailly, Kevin\\nHammond, Jared Corduan and Marcin Szamotulski.\\n\\nWe also improved the documentation of key repositories, by adding description,\\nimproving their `README` file & `CONTRIBUTING` files, adding code of conducts\\nfollowing the [Cardano Engineering Handbook][CEH].  This includes improvements to:\\n\\n* [`ouroboros-network`] (both `network` & `consensus`)\\n* [`cardano-ledger`]\\n* [`cardano-node`]\\n\\nAnd also\\n\\n* [`io-sim`]\\n* [`typed-protocols`]\\n* [`cardano-prelude`] (work in progress)\\n\\nThe work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. \\n\\n\\nIn this quarter we also identified a number of projects which can be published to\\n`Hackage` (Haskell\'s package repository) or `crate` (Rust package repository).\\nThe list contains 21 packages, 2 of which ([`hedgehog-extras`] and\\n[`quickcheck-dynamic`]) are already published on Hackage and another 5 (from\\nthe [`io-sim`] repository) are close to be published.\\n\\n\\n### Detailed log\\n\\nThe progress of the open-source project is tracked in [this project][open-source-project].\\n\\n[CEH]: https://input-output-hk.github.io/cardano-engineering-handbook/\\n[open-source-project]: https://github.com/orgs/input-output-hk/projects/60/views/1\\n[`cardano-ledger`]: https://github.com/input-output-hk/cardano-ledger\\n[`cardano-node`]: https://github.com/input-output-hk/cardano-node\\n[`cardano-prelude`]: https://github.com/input-output-hk/cardano-prelude\\n[`hedgehog-extras`]: https://hackage.haskell.org/package/hedgehog-extras\\n[`io-sim`]: https://github.com/input-output-hk/io-sim\\n[`ouroboros-network`]: https://github.com/input-output-hk/ouroboros-network\\n[`quickcheck-dynamic`]: https://hackage.haskell.org/package/quickcheck-dynamic\\n[`typed-protocols`]: https://github.com/input-output-hk/typed-protocols\\n[open-source-presentation]: https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ"},{"id":"2022-11-15-consensus","metadata":{"permalink":"/cardano-updates/quarterly/2022-11-15-consensus","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-15-consensus.md","source":"@site/quarterly/2022-11-15-consensus.md","title":"Consensus Quarterly Update","description":"Consensus Quarterly Update","date":"2022-11-15T00:00:00.000Z","formattedDate":"November 15, 2022","tags":[{"label":"consensus","permalink":"/cardano-updates/quarterly/tags/consensus"}],"readingTime":3.655,"hasTruncateMarker":false,"authors":[{"name":"Damian Nadales","title":"Consensus Team Lead","url":"https://github.com/dnadales","imageURL":"https://github.com/dnadales.png","key":"dnadales"}],"frontMatter":{"title":"Consensus Quarterly Update","slug":"2022-11-15-consensus","authors":"dnadales","tags":["consensus"],"hide_table_of_contents":false},"prevItem":{"title":"Open-Source Update","permalink":"/cardano-updates/quarterly/2023-01-13-open-source"},"nextItem":{"title":"Network Team Update","permalink":"/cardano-updates/quarterly/2022-11-09-network"}},"content":"## Consensus Quarterly Update\\n## 2022-09 - 2022-11\\n\\n### Main achievements\\n\\n#### UTxO HD\\n\\n- As a consequence of the errors observed when running distributed mempool\\n  benchmarks, we re-designed the UTxO HD mempool integration, which fixed these\\n  errors and lead to a simpler and more maintainable design.\\n\\n- We focused on increasing test coverage for the UTxO-HD prototype. In\\n  particular, we added property tests for:\\n  - Backing store (work ongoing)\\n  - Era transitions\\n\\n- The property tests we added uncovered several bugs, which is a great result\\n  given the exponential increase in the cost of finding bugs as they are closer\\n  to deployment.\\n\\n- One of the errors found by our tests required us to work on improvements in\\n  the Haskell bindings for LMDB. This work is ongoing.\\n\\n- We started working on the mempool property tests that will exercise the new\\n  code paths that UTxO HD introduced.\\n\\n- We developed, benchmarked and tested an implementation of sequences of\\n  differences based on \\"anti-diffs\\". Performance results of diff sequence\\n  operations show that we achieved a speedup of about `4x` across several\\n  scenarios. Note: this speedup is taking into account diff sequence operations\\n  only, so the consensus-wide speedup is less than `4x`.\\n\\n- We integrated the \\"anti-diff\\" prototype into the UTxO HD feature branch.\\n\\n#### Genesis\\n\\n- We wrote a simulator that demonstrates soundness of an abstract implementation\\n  of the new chain selection rule.\\n- We elaborated a draft specification for the Genesis implementation (currently\\n  awaiting feedback from other architects).\\n- We elaborated a draft specification for the ChainSync Jumping optimization. In\\n  particular, this includes a proof sketch that the latter preserves liveness\\n  and safety in all cases.\\n- With the Networking team, we co-designed the eclipse avoidance mechanism,\\n  specifically its coherence with the Genesis implementation plan\'s security\\n  and its dependence on the new ChainSync Jumping optimization.\\n- We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a\\n  performance degradation wrt the baseline. Our optimization attempts so far\\n  have brought the performance closer to the baseline, but not yet to parity.\\n\\n#### Conway era\\n\\n- We did most of the heavy lifting required to integrate the Conway era into the\\n  Consensus layer.\\n\\n#### Technical debt\\n\\n- We started working on enabling CI nightly tests, which revealed several test\\n  failures due to thunks being found it data structures used by the ledger and\\n  consensus. We made a lot of progress fixing those thunk errors, but some\\n  errors still remain.\\n\\n- We elaborated a `db-analyser` benchmark for the ledger operations. This led us\\n  to the identification of high processing time at epoch boundaries, and we\\n  could not observe any performance degradation that can be attributed to era\\n  changes.\\n\\n- We fixed a source of flakiness in the ChainDB QSM test.\\n\\n- We clarified a common source of confusion around VRF tie-breaking and\\n  cross-era chain selection.\\n\\n- We fixed a bug in the maximum-allowed ledger major protocol version.\\n\\n#### Fostering collaboration\\n\\n- We spent time making `cardano-updates` the central source of information for\\n  the core teams stakeholders.\\n- We went through the Galois gap analysis and extracted actionable points to\\n  take on next.\\n- Bart and Yogesh continued with their onboarding and stated making substantial\\n  contributions to consensus.\\n\\n### Next steps\\n\\n#### UTxO HD\\n\\n- Finish the mempool property tests.\\n- Benchmark the latest version of the prototype.\\n- Elaborate a document that describes new integration test scenarios and pass it\\n  to the SDET team.\\n- Bring query UTxO by address command performance on par with the baseline\\n  version.\\n\\n#### Genesis\\n\\n- Receive and incorporate Duncan\'s feedback on the first draft specification for\\n  the Genesis implementation.\\n- Begin prototyping the first genesis implementation, unless the first draft\\n  needs major changes.\\n- Draft a second revision of the Genesis report.\\n- Review the second revision with a wider audience, which includes at least\\n  Alexander Russell. That feedback will drive a third and hopefully final\\n  revision.\\n- Investigate how to mitigate the ~30% slowdown we have observed so far in the\\n  ChainSync jumping prototype, and try to mitigate it. In particular, we might\\n  need to optimize the existing BlockFetch logic.\\n\\n#### Tech debt\\n\\n- Enabling nightly CI tests.\\n\\n#### Fostering collaboration\\n\\n- Merge the tutorial document Galois wrote; requires CI integration.\\n- Come up with our own documentation improvements, many of which were suggested\\n  in the Galois gap analysis.\\n- Try to hire a new team member."},{"id":"2022-11-09-network","metadata":{"permalink":"/cardano-updates/quarterly/2022-11-09-network","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-09-network.md","source":"@site/quarterly/2022-11-09-network.md","title":"Network Team Update","description":"Network Quarterly Update","date":"2022-11-09T00:00:00.000Z","formattedDate":"November 9, 2022","tags":[{"label":"network","permalink":"/cardano-updates/quarterly/tags/network"}],"readingTime":3.87,"hasTruncateMarker":false,"authors":[{"name":"Marcin Szamotulski","title":"Network Team Lead","url":"https://github.com/coot","imageURL":"https://github.com/coot.png","key":"coot"}],"frontMatter":{"title":"Network Team Update","slug":"2022-11-09-network","authors":"coot","tags":["network"],"hide_table_of_contents":false},"prevItem":{"title":"Consensus Quarterly Update","permalink":"/cardano-updates/quarterly/2022-11-15-consensus"},"nextItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/quarterly/2022-11-07-ledger"}},"content":"## Network Quarterly Update\\n## 2022-09 - 2022-11\\n\\n### Summary of most important improvements\\n\\nDuring this quarter the networking team delivered low level specification of\\npeer sharing & eclipse evasion.  We held a session with the consensus & the\\nscientists; we got a positive feedback on the design.\\n\\nFurther we focused on implementation of peer sharing.  We produced a [detail\\ndesign][peer-sharing-design] and an [early implementation][peer-sharing-pr].\\n\\nWe prepared the _P2P Single Relay Release_ (`cardano-node-1.35.5`).  It\\nincludes over [130 patches][p2p-release] of network stack improvements over the\\nprevious version `1.35.4`, which were accomplished over a longer period of\\ntime.  Among them are both bug fixes and UX improvements for stake pool\\noperators like simplified format of the [topology file][topology-file], or\\nimprovements in the logged messages:\\n\\n* [tracing of early consensus exceptions][consensus-startup-trace]\\n* [tracing of demotion of local root peers][demotion-trace] (traced with\\n  `Warning` severity), the trace is called `TraceDemoteLocalAsynchronous`, in\\n  `json` format it is encoded as `DemoteLocalAsynchronous`.  For an SPO\\n  tracking these demotion is vital (such demotion could indicate that a block\\n  producer is no longer connected to its relays or vice versa)\\n\\nWe also provide better integration with [systemd][socket-activation] (socket\\nactivation improvements) or improvements in the networking stack:\\n\\n* [exit policies][exit-policy],\\n* [peer metrics improvements][peer-metrics],\\n* [DNS TTL][dns-ttl] improvements (which make it harder to misconfigure the\\n  system, an issue discovered by the performance & monitoring team),\\n* do not trigger inbound idle timeout for `node-to-client` connections ([pr\\n  #3844][idle-timeout]), an issue reported to us by Matthias Benkort from\\n  Cardano Foundation.\\n\\nDuncan has been making progress with the input endorsers demo. His simulation\\nprovides a useful animated visualisation and live quantification of behaviour\\nof the modeled design.\\n\\nWe also improved our e2e diffusion simulation by implementing header-body\\nsplit, similar to what the real implementation does.\\n\\nWe also made some advances towards our future goals of P2P release for block\\nproducer nodes ([pr #3800][pr-3800] - in review) & for Daedalus users\\n([pr #3690][pr-3690] - merged).\\n\\n### Detailed log\\n\\n* We expanded diffusion simulation with block-fetch protocol bringing it closer\\n  to the production system.\\n\\n* We addressed some additional technical depth in diffusion simulation\\n\\n* We slightly improved documentation & CI of io-sim and typed-protocols\\n  repositories for open-source contributors.\\n\\n* We closed a number of issues towards publishing io-sim on Hackage (only two\\n  essential issues are left open).\\n\\n* We pushed a branch of typed-protocols which captures one of the developer UX\\n  problems in the API which we need to solve.\\n\\n* We identified and fixed an issue related to systemd sockets.\\n\\n* We identified and fixed an issue in consensus initialisation not giving\\n  feedback on early errors.\\n\\n* We deployed RT View, identified a number of issues which were communicated to\\n  the performance & monitoring team.\\n\\n* We finished high level & detailed design of peer sharing, very early\\n  implementation of peer sharing is done (note that peer sharing cannot be\\n  safely deployed without eclipse evasion & genesis).\\n\\n* We finished high level design of eclipse evasion, and started working on\\n  a detailed design.\\n\\n* We were assigned the role of release engineer for 1.35.5 release (the P2P\\n  single relay release); we prepared a cardano-node for 1.35.5 release which\\n  contains more than 130 patches of just network stack improvements done over\\n  last few months.\\n\\n* We diagnosed and fixed an tricky bug in the peer state actions (a component\\n  which sits between outbound governor and connection manager). That bug was\\n  introduced earlier this year and never released. It was caught by the QA\\n  testing framework. We expanded our diffusion simulation to cover such case and\\n  also mitigated a chance for reintroducing such a bug in future.\\n\\n* We identified and quite likely mitigated a misconfiguration in the\\n  benchmarking cluster (next benchmarking run will confirm our hypothesis).\\n\\n* We simplified the format of p2p topology file, we got positive feedback from\\n  SPOs.\\n\\n* We raised severities of some of the logging messages, which is an important\\n  improvement for SPOs, exchanges and other users of the system.\\n\\n* We worked on input endorsers simulation which gives both animated and\\n  quantified live feedback on network operation, using a simplified model of\\n  a TCP/IP network. \\n\\n## Next quarter\\n\\n* Release the Single Relay P2P Release `1.35.5`.\\n\\n* Carry on with Peer Sharing (review, testing).\\n\\n* Deliver a talk at [Conference on Principles of Distributed Systems 2022][OPODIS2022] in Brussels, Belgium.\\n\\n* Present Detailed Design of Eclipse Evasion and start implementation phase.\\n\\n* Work on P2P Block Producer release.\\n\\n* Carry on with publishing of `io-sim` on `Hackage`.\\n\\n[OPODIS2022]: https://sites.uclouvain.be/OPODIS2022/ \\n[peer-sharing-design]: https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan\\n[peer-sharing-pr]: https://github.com/input-output-hk/ouroboros-network/pull/4019\\n[p2p-release]: https://github.com/input-output-hk/ouroboros-network/pull/4120\\n[exit-policy]: https://github.com/input-output-hk/ouroboros-network/pull/3785\\n[peer-metrics]: https://github.com/input-output-hk/ouroboros-network/pull/3915\\n[socket-activation]: https://github.com/input-output-hk/ouroboros-network/pull/3979\\n[topology-file]: https://github.com/input-output-hk/cardano-node/pull/4563\\n[dns-ttl]: https://github.com/input-output-hk/ouroboros-network/pull/4106\\n[consensus-startup-trace]: https://github.com/input-output-hk/ouroboros-network/pull/4015\\n[demotion-trace]: https://github.com/input-output-hk/ouroboros-network/pull/4127\\n[idle-timeout]: https://github.com/input-output-hk/ouroboros-network/pull/3844\\n[pr-3800]: https://github.com/input-output-hk/ouroboros-network/pull/3800\\n[pr-3690]: https://github.com/input-output-hk/ouroboros-network/issues/3968"},{"id":"2022-11-07-ledger","metadata":{"permalink":"/cardano-updates/quarterly/2022-11-07-ledger","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-07-ledger.md","source":"@site/quarterly/2022-11-07-ledger.md","title":"Ledger Team Update","description":"Ledger Quarterly Update","date":"2022-11-07T00:00:00.000Z","formattedDate":"November 7, 2022","tags":[{"label":"ledger","permalink":"/cardano-updates/quarterly/tags/ledger"}],"readingTime":1.255,"hasTruncateMarker":false,"authors":[{"name":"Jared Corduan","title":"Ledger Team Lead","url":"https://github.com/JaredCorduan","imageURL":"https://github.com/JaredCorduan.png","key":"JaredCorduan"}],"frontMatter":{"title":"Ledger Team Update","slug":"2022-11-07-ledger","authors":"JaredCorduan","tags":["ledger"],"hide_table_of_contents":false},"prevItem":{"title":"Network Team Update","permalink":"/cardano-updates/quarterly/2022-11-09-network"},"nextItem":{"title":"Node API & CLI Team Update","permalink":"/cardano-updates/quarterly/2022-10-07-node-cli-api"}},"content":"## Ledger Quarterly Update\\n## 2022-09 - 2022-11-04\\n\\n* We finished a minimal ledger era capable of master key rotation.\\n  This will be re-purposed our upcoming work.\\n* We have the humble beginnings of a proper ledger API.\\n* We improved the problematic cost model serialization\\n  (recall the song and dance about updating the cost model one epoch after the hard fork).\\n* We have added benchmarks for problematic areas.\\n* Massive repository restructure and cleanup.\\n  * Unified and consistent variable name schemes (not completely finished, but nearly there).\\n  * Massive reduction in type constraints, which causes a lot of developer friction,\\n    in our code and also downstream.\\n  * More organized module structures.\\n  * Improved generators for our property tests.\\n  * We removed our dependency on cardano-prelude.\\n* The formal ledger model has come a long way.\\n  * We created a fork of Agda that provides some meta-programming support for the ledger rules.\\n  * We have a large amount of the basic UTxO support in the model.\\n  * We can generate a good looking PDF from the model.\\n  * We can produce Haskell from the model.\\n  * We have a nice finite set theory library that we can use for many of the ledger rules.\\n  * We have nix support for the model.\\n\\n## Next steps\\n\\n  * Individual tracking of deposits. [[issue-3113]]\\n  * Versioned CBOR encoders/decoders. [[issue-3014]]\\n  * New ledger era transaction body (and the surround work associated with it).\\n  * Designs for the next ledger era.\\n\\n[issue-3113]: https://github.com/input-output-hk/cardano-ledger/issues/3113\\n[issue-3014]: https://github.com/input-output-hk/cardano-ledger/issues/3014"},{"id":"2022-10-07-node-cli-api","metadata":{"permalink":"/cardano-updates/quarterly/2022-10-07-node-cli-api","editUrl":"https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-07-nod-api-cli.md","source":"@site/quarterly/2022-11-07-nod-api-cli.md","title":"Node API & CLI Team Update","description":"Node-Api-Cli Quarterly Update","date":"2022-11-07T00:00:00.000Z","formattedDate":"November 7, 2022","tags":[{"label":"cli-api-quarterly","permalink":"/cardano-updates/quarterly/tags/cli-api-quarterly"}],"readingTime":1.355,"hasTruncateMarker":false,"authors":[{"name":"Jordan Millar","title":"Node Team Lead","url":"https://github.com/Jimbo4350","imageURL":"https://github.com/Jimbo4350.png","key":"Jimbo4350"}],"frontMatter":{"title":"Node API & CLI Team Update","slug":"2022-10-07-node-cli-api","authors":"Jimbo4350","tags":["cli-api-quarterly"],"hide_table_of_contents":false},"prevItem":{"title":"Ledger Team Update","permalink":"/cardano-updates/quarterly/2022-11-07-ledger"}},"content":"## Node-Api-Cli Quarterly Update\\n## 2022-09 - 2022-11-04\\n\\n- Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0\\n- Major clean up of stale iusses + PRs.\\n- Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs\\n- cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.\\n- cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.\\n- General documentation updates and improvements\\n- Addition of tx-mempool command which allows users to:\\n  - Query the node about the current mempool\'s capacity and sizes\\n  - Request the next transaction from the mempool\'s current list\\n  - Query if a particular transaction exists in the mempool\\n-  Initial refactoring of cardano-testnet\\n\\nNext quarter\\n\\n- cardano-api\\n  - Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.\\n- cardano-testnet\\n  - Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - https://github.com/input-output-hk/cardano-node/issues/4598\\n- Serenity\\n  - Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.\\n- General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new."}]}')}}]);
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In particular, we now have a lot of support for axiomatic set theory.\nWhile the next ledger era is still in the design phase, most of the team remains working\non technical debt.\nIn particular, we have moved a lot more code out of the Shelley specific modules and into\na ledger core module, we have finished up our benchmarking around the problematic ",(0,n.kt)("inlineCode",{parentName:"p"},"TICKF"),"\nledger transition (while improving the performance), made conveniences to the development\nenvironment, cleaned up all the recent changes to the cost model, added a lot of documentation,\nfixed some flaky tests, and deleted some dead code."),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h3",{id:"axiomatic-set-theory"},"Axiomatic Set Theory"),(0,n.kt)("p",null,"The formal ledger model now has support for much of the set theory that we make use of in\nthe formal ledger specifications. See [",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/formal-ledger-specifications/pull/20"},"pull-20"),"]."),(0,n.kt)("h3",{id:"completed-technical-debt"},"Completed Technical Debt"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"We have addressed issues with two of our most problematic and flaky tests.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3039"},"pull-3039"),"] and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3093"},"pull-3093"),"]."),(0,n.kt)("li",{parentName:"ul"},"We have added more documentation and tests to the Twiddler module. This is a module which\nmakes our CBOR serialization round-trip tests much more robust, and will also hopefully\nhelp enforce the mandate for downstream libraries to never re-serialize data that needs\nto be hashed. See [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3073"},"pull-3073"),"] and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3095"},"pull-3095"),"]\n(we cannot merge 3095 just yet, due to a preference for merging other features)."),(0,n.kt)("li",{parentName:"ul"},"We have finished our long analysis of the problematic ",(0,n.kt)("inlineCode",{parentName:"li"},"TICKF")," transition.\nWe now have a lot of benchmarks surrounding this code, and have added performance improvements.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3068"},"pull-3068"),"] and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3035"},"issue-3035"),"]."),(0,n.kt)("li",{parentName:"ul"},"We have restored support for\n",(0,n.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/ghcid"},"ghcid"),"\nin our repository. This is a tool for developing with Haskell that many of us find greatly\nimproves our productivity by providing us with constant feedback from the type checker.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3112"},"pull-3112"),"]."),(0,n.kt)("li",{parentName:"ul"},"After much activity on the cost model, we have done some final clean up of the code.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3075"},"pull-3075"),"] and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3101"},"pull-3101"),"]."),(0,n.kt)("li",{parentName:"ul"},"We moved a lot of the existing user facing documentation regarding native tokens into the\nledger repository, and cleaned it up\n(most of the heavy lifting was done by our amazing technical writers).\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3091"},"pull-3091"),"]."),(0,n.kt)("li",{parentName:"ul"},"We removed dead code. See [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3089"},"pull-3089"),"]."),(0,n.kt)("li",{parentName:"ul"},"We moved a lot of code from the Shelley specific libraries to the ledger core library.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3109"},"pull-3109"),"] and [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3110"},"pull-3110"),"]."),(0,n.kt)("li",{parentName:"ul"},"We've removed more of the awkward legacy template Haskell names.\nSee [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3108"},"pull-3108"),"].")))}s.isMDXComponent=!0}}]);
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This was an enormous effort, but it will solve a host of problems that we have\nhad since the Shelley phase. It will take time to properly review it, and we will\nneed to put in a lot of effort to integrate it with the downstream components, but this is  a huge\nmilestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction\nserialization schemes."),(0,a.kt)("p",null,"We also have a draft pull request that reworks how deposits are tracked. Users of the system will\nnot notice any difference, but it is a necessary change needed to prepare the way for\ndecentralizing the governance of Cardano."),(0,a.kt)("p",null,"Finally, we continued to address technical debt. 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There is a performance regression in the header\nnotification metric.  The P2P cluster is constructed with the same\ntopology as the non-p2p reference one this indicates some regression which\nneeds to be further investigated.  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",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4589"},"ouroboros-network#4589"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5313"},"cardano-node#5313"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-cli/pull/30/"},"cardano-cli#30")))),(0,r.kt)("h4",{id:"iosim"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/io-sim"},"IOSim")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We fixed timeouts & delays in ",(0,r.kt)("inlineCode",{parentName:"p"},"io-classes")," in a series of PRs: ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/81"},"io-sim#81"),",\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/82"},"io-sim#82"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/86"},"io-sim#86"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/87"},"io-sim#87"),".")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We released ",(0,r.kt)("inlineCode",{parentName:"p"},"strict-stm-1.1.0.1")," on Hackage which fixed a bug in package\ndescription file: ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/101"},"io-sim#101"),"."))),(0,r.kt)("h4",{id:"typed-protocols"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/typed-protocols"},"Typed Protocols")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We published haddocks of ",(0,r.kt)("inlineCode",{parentName:"li"},"typed-protocols")," at\n",(0,r.kt)("a",{parentName:"li",href:"https://input-output-hk.github.io/typed-protocols"},"https://input-output-hk.github.io/typed-protocols"))),(0,r.kt)("h4",{id:"cardano-client"},(0,r.kt)("a",{parentName:"h4",href:"https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client"},"Cardano Client")),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We fixed a bug in ",(0,r.kt)("inlineCode",{parentName:"li"},"cardano-client-0.1.0.2")," release which results in clients\n(e.g. ",(0,r.kt)("inlineCode",{parentName:"li"},"db-sync"),") negotiate an experimental protocol version.")),(0,r.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"After the split between consensus & network, we made ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-client"),"\nindependent of ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus-diffusion"),": ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4526"},"ouroboros-network#4526"),".")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We wrap all exceptions in ",(0,r.kt)("inlineCode",{parentName:"p"},"DiffusionError"),": ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4537"},"ouroboros-network#4537"),", ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5356"},"cardano-node#5356"),"."))),(0,r.kt)("h4",{id:"ci-improvements"},"CI improvements"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("p",{parentName:"li"},"We switched to use GitHub merge queues in ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-network"),", ",(0,r.kt)("inlineCode",{parentName:"p"},"io-sim")," and\n",(0,r.kt)("inlineCode",{parentName:"p"},"typed-protocols")," repositories; 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Once we will have an integration branch for ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-node"),",\n",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-ledger-conway-1.8")," and ",(0,o.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus")," packages can be released\nto ",(0,o.kt)("inlineCode",{parentName:"p"},"CHaP")," and PRs can be merged once they go through review & CI."),(0,o.kt)("p",null,"We also fixed some smaller issues regarding peer sharing (both were discovered\nby Karl from ",(0,o.kt)("a",{parentName:"p",href:"https://cardanofoundation.org/"},"CF"),"). More details are included below."),(0,o.kt)("h3",{id:"progress-on-p2p-addoption"},"Progress on P2P addoption"),(0,o.kt)("h4",{id:"spo-relays"},"SPO relays"),(0,o.kt)("p",null,"There are currently ~2000 relays running P2P\nenabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On\n16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil\nAda."),(0,o.kt)("p",null,(0,o.kt)("img",{alt:"P2P relays",src:n(86597).Z,width:"2034",height:"1588"})),(0,o.kt)("p",null,"The following graphs show several different versions of relays running on the mainnet.  The\ngreen line ",(0,o.kt)("inlineCode",{parentName:"p"},"NodeToNodeVersionV10.True")," denotes P2P relays, which slowly\nincrease over time.  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These timeouts help a node remove idle connections from the\nresponder (server) side ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4648"},"ouroboros-network-#4648"),"."),(0,o.kt)("li",{parentName:"ul"},"he improved the ",(0,o.kt)("inlineCode",{parentName:"li"},"WireShark")," dissector by adding support for the ",(0,o.kt)("inlineCode",{parentName:"li"},"peer-sharing")," mini-protocol ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4656"},"ouroboros-network-#4656"),".")),(0,o.kt)("p",null,(0,o.kt)("a",{parentName:"p",href:"https://galois.com/"},"Galois")," has been making progress in addressing some of the issues they raised in their review (last year):"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Mark Tullsen (",(0,o.kt)("a",{parentName:"li",href:"https://galois.com/"},"Galois"),") has been working on refactoring the main entry function of P2P ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4661"},"ouroboros-network-#4661")," (in review);"),(0,o.kt)("li",{parentName:"ul"},"Sam Cowger (",(0,o.kt)("a",{parentName:"li",href:"https://galois.com/"},"Galois"),") has been reviewing all use cases of ",(0,o.kt)("inlineCode",{parentName:"li"},"error")," and ",(0,o.kt)("inlineCode",{parentName:"li"},"unsafe")," calls\n",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4661"},"ouroboros-network-#4661")," (in review).")),(0,o.kt)("h2",{id:"peer-sharing"},"Peer Sharing"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Light peer sharing is only enabled when peer sharing is turned on ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4652"},"ouroboros-network-#4652"),";"),(0,o.kt)("li",{parentName:"ul"},"Handshake incorrectly reports peer sharing value.  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distribution to the ledger state must proceed with caution.\nWe do not want the memory used by the node to increase too much,\nand performance problems can lead to reduced block production.\nWe have prototyped, tested, and benchmarked several approaches that could give us\nthe current DRep stake distribution at each epoch boundary.\nThis has very important implications, since we want every ADA holder to be able to at any\ntime (such as during a contentious vote) register themselves as a DRep and still have time\nto vote themselves on the issue."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3344"},"pull-3344"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3353"},"pull-3353"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3364"},"pull-3364"),"]"),(0,r.kt)("h4",{id:"integration-work"},"Integration work"),(0,r.kt)("p",null,"The ledger has made some wonderful improvements over the past six months,\nbut which entail a significant amount of integration efforts:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Our new versioned CBOR schemes"),(0,r.kt)("li",{parentName:"ul"},"Individual deposit tracking"),(0,r.kt)("li",{parentName:"ul"},"An improved cross-era interface utilizing lenses"),(0,r.kt)("li",{parentName:"ul"},"A new ledger API"),(0,r.kt)("li",{parentName:"ul"},"Re-arranging the ledger stake in preparation for CIP-1694"),(0,r.kt)("li",{parentName:"ul"},"Versioning our Haskell packages\nusing ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-haskell-packages"},"CHaPs"),"."),(0,r.kt)("li",{parentName:"ul"},"Consistent conventions for variable names")),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3279"},"pull-3279"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3282"},"pull-3282"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3288"},"pull-3288"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3289"},"pull-3289"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3292"},"pull-3292"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3297"},"pull-3297"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3298"},"pull-3298"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3299"},"pull-3299"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3300"},"pull-3300"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3302"},"pull-3302"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3303"},"pull-3303"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3308"},"pull-3308"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3342"},"pull-3342"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3345"},"pull-3345"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3356"},"pull-3356"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3357"},"pull-3357"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3360"},"pull-3360"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3361"},"pull-3361"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3363"},"pull-3363"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4349"},"pull-4349"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/378"},"pull-378"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/376"},"pull-376"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/373"},"pull-373"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/370"},"pull-370"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-base/pull/361"},"pull-361"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4976"},"pull-4976"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/5013"},"pull-5013"),"]"),(0,r.kt)("h4",{id:"deposit-tracking"},"Deposit tracking"),(0,r.kt)("p",null,"Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.\nDeposits were returned according to the current protocol parameters.\nWhen the values of these two protocol parameters change, the deposit pot\nis adjusted by adding to, or removing from, the reserves."),(0,r.kt)("p",null,"This has several problems:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Most people expect a deposit to be paid back exactly."),(0,r.kt)("li",{parentName:"ul"},"We cannot increase the deposit amount once the reserves hits zero."),(0,r.kt)("li",{parentName:"ul"},"If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials."),(0,r.kt)("li",{parentName:"ul"},"Because of the problems above, it is going to be incredibly hard to ever change the values."),(0,r.kt)("li",{parentName:"ul"},"There is a serious issue involving hard forks.\nThe consensus layer makes the decision about whether or not to enact a hard fork based on\nthe protocol parameter update state two stability windows before the end of the epoch.\nHowever, the ledger will reject a protocol parameter update on the epoch boundary\nif the deposit pot adjustments cannot be reconciled with the reseve pot.\nThis means that if quorum is met regarding changing the major protocol version,\nbut the update is rejected on the epoch boundary, consensus will change the era but the\nledger will not change the major protocol version, leaving the ledger in a split-brain state.")),(0,r.kt)("p",null,"Because we never actually changed the values of the two deposits amounts in the protocol parameters\non mainnet, we were able to retroactively change the behavior.\nWe made the following changes:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Individual deposits are tracked in the ",(0,r.kt)("inlineCode",{parentName:"li"},"DState"),"."),(0,r.kt)("li",{parentName:"ul"},"The amount deposited is always returned.")),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3195"},"pull-3195"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3202"},"pull-3202"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3217"},"pull-3217"),"]"),(0,r.kt)("h4",{id:"new-ledger-api"},"New ledger API"),(0,r.kt)("p",null,"We have significantly built up the ledger API.\nWe will eventually replace much of the ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-api")," in the node repository with this ledger API."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3242"},"pull-3242"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3248"},"pull-3248"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3328"},"pull-3328"),"]"),(0,r.kt)("h4",{id:"constraint-based-generators"},"Constraint-based generators"),(0,r.kt)("p",null,"Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks\nwhich span several epochs, mimicking a real network.\nThese tests are, in theory, excellent for checking properties.\nThey are, however, very difficult to maintain and are not as random as we would like\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks)."),(0,r.kt)("p",null,"We have a new declaritive infrastructure for building constraint-based generators,\nwhich instead generate a random ledger state representative of not just an initial state,\nbut also those representative of the end result of a long sequence of valid blocks.\nMoreover, these generators are very fast and are much more random than our old generators.\nBefore we can start using them for our existing property tests, however, we still need to\nexpand them to generate a valid block for a given ledger state."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3219"},"pull-3219"),"]"),(0,r.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"We continued to address technical debt as much as we can."),(0,r.kt)("p",null,"[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3167"},"pull-3167"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3170"},"pull-3170"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3172"},"pull-3172"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3175"},"pull-3175"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3184"},"pull-3184"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3205"},"pull-3205"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3208"},"pull-3208"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3210"},"pull-3210"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3212"},"pull-3212"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3218"},"pull-3218"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3222"},"pull-3222"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3223"},"pull-3223"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3224"},"pull-3224"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3225"},"pull-3225"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3229"},"pull-3229"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3239"},"pull-3239"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3241"},"pull-3241"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3244"},"pull-3244"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3245"},"pull-3245"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3249"},"pull-3249"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3260"},"pull-3260"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3263"},"pull-3263"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3264"},"pull-3264"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3268"},"pull-3268"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3269"},"pull-3269"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3270"},"pull-3270"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3274"},"pull-3274"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3276"},"pull-3276"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3277"},"pull-3277"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3286"},"pull-3286"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3290"},"pull-3290"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3295"},"pull-3295"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3296"},"pull-3296"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3306"},"pull-3306"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3307"},"pull-3307"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3310"},"pull-3310"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3311"},"pull-3311"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3316"},"pull-3316"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3320"},"pull-3320"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3323"},"pull-3323"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3327"},"pull-3327"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3331"},"pull-3331"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3332"},"pull-3332"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3333"},"pull-3333"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3338"},"pull-3338"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3341"},"pull-3341"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3347"},"pull-3347"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3350"},"pull-3350"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3351"},"pull-3351"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3352"},"pull-3352"),"]\n[",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3354"},"pull-3354"),"]"),(0,r.kt)("h5",{id:"critical-fixes"},"Critical fixes"),(0,r.kt)("p",null,"We fixed two critical issues:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Growing block production delay on the epoch boundary: [",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3209"},"pull-3209"),"]"),(0,r.kt)("li",{parentName:"ul"},"Unexpected node shutdown from ",(0,r.kt)("inlineCode",{parentName:"li"},"balanceR"),": [",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3343"},"pull-3343"),"]")),(0,r.kt)("h3",{id:"next-steps"},"Next steps"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Conway spec")," -\nComplete the first version of the conway formal specification."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"DRep stake distribution")," -\nHave the ledger compute the DRep stake distribution with acceptible performance."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Devnet ready")," -\nHave the Haskell implementation of the conway era in sync with the formal specification,\nand integrate the changes with consensus and node.\nAll the details might not be finalized, but the wire specification and the API should\nbe stable so that conway can be placed on a devnet for tool builders to start integrating with."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("strong",{parentName:"li"},"Plutus V3")," -\nIntegrate Plutus V3 into the ledger, including a new script context which supports DReps.")),(0,r.kt)("h3",{id:"more-details"},"More details"),(0,r.kt)("p",null,"This quarterly report was based off of the following fortnightly ones:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-01-05-ledger"},"2023-01-05")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-01-19-ledger"},"2023-01-19")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-02-02-ledger"},"2023-02-02")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-02-17-ledger"},"2023-02-17")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-03-ledger"},"2023-03-03")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-17-ledger"},"2023-03-17")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"2023-03-31-ledger"},"2023-03-31"))))}s.isMDXComponent=!0}}]);
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Although most of the work\nhas be done already the release of ",(0,o.kt)("inlineCode",{parentName:"p"},"io-sim")," on ",(0,o.kt)("inlineCode",{parentName:"p"},"Hackage")," will happen in the\nnext quarter."),(0,o.kt)("p",null,"We would also like to address ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4244"},"chain-sync timeout issue")," recently\ndiagnosed by Karl Knutsson."),(0,o.kt)("p",null,"If time permits we would also like to address some technical debt, especially:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3387"},"enable nothunk in diffusion tests")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4085"},"refactor diffusion testnet simulation"))),(0,o.kt)("h3",{id:"risks"},"Risks"),(0,o.kt)("p",null,"The performance regression for block producer with P2P needs to be investigated\nin the near future.  This is blocker for the release of P2P on BP nodes."),(0,o.kt)("h3",{id:"detailed-log"},"Detailed log"),(0,o.kt)("h4",{id:"contributions-to-ouroboros-network"},"Contributions to Ouroboros-Network"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We added ",(0,o.kt)("inlineCode",{parentName:"li"},"TraceDemoteLocalAsynchronous"),", which enables notification of critical issues for SPOs"),(0,o.kt)("li",{parentName:"ul"},"We fixed ",(0,o.kt)("inlineCode",{parentName:"li"},"cardano-ping")," compatibility with ",(0,o.kt)("inlineCode",{parentName:"li"},"NodeToNodeV_10")," (P2P, ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4165"},"pr #4165"),")"),(0,o.kt)("li",{parentName:"ul"},"We fixed a bug in demotion peers to cold which affected P2P nodes 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",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4191"},"issue #4191")),(0,o.kt)("li",{parentName:"ul"},"We fixed a simulation bug found in ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4258"},"issue #4258")),(0,o.kt)("li",{parentName:"ul"},"[pr #4168]"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4177"},"issue #4177"))),(0,o.kt)("h4",{id:"contributions-to-cardano-node"},"Contributions to Cardano-Node"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We maintained the Single Relay Release ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4612"},"pr #4612"),", (e.g. fixing CI issues,\nRebasing it when necessary, publishing packages to Cardano Haskell Packages);"),(0,o.kt)("li",{parentName:"ul"},"We enhanced ",(0,o.kt)("inlineCode",{parentName:"li"},"JSON")," serialisation / deserialisation of ",(0,o.kt)("inlineCode",{parentName:"li"},"NodeToNodeVersion")," and ",(0,o.kt)("inlineCode",{parentName:"li"},"NodeToClientVersion"),";")),(0,o.kt)("h4",{id:"contributions-to-iosim"},"Contributions to IOSim"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"We started to use Cardano Haskell Packages for ",(0,o.kt)("inlineCode",{parentName:"li"},"IOSim")," (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/48"},"pr #48"),")"),(0,o.kt)("li",{parentName:"ul"},"We updated change log files"),(0,o.kt)("li",{parentName:"ul"},"We added support of ",(0,o.kt)("inlineCode",{parentName:"li"},"ghc-9.4")," (",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/50"},"pr #50"),")")),(0,o.kt)("p",null,"We also addressed the following issues in ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/57"},"pr #57")," in order to prepare the package for publication on 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(Same PR as above: ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-base/pull/411"},"https://github.com/input-output-hk/cardano-base/pull/411"),")."),(0,n.kt)("li",{parentName:"ul"},"Update CIP-0381 with new plutus built-in functions, ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/cardano-foundation/CIPs/pull/506"},"#506"),". In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. ")),(0,n.kt)("h3",{id:"sidechains"},"Sidechains"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Opened PR in halo2curves to include BLS12-381 and JubJub, ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/privacy-scaling-explorations/halo2curves/pull/38"},"#38")),(0,n.kt)("li",{parentName:"ul"},"Addition constraint over JubJub merged ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/sidechains-zk/pull/10"},"#10"))))}h.isMDXComponent=!0}}]);
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",(0,a.kt)("inlineCode",{parentName:"li"},"Prepare Mithril Signer deployment model for SPO")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/862"},"#862"),":",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Design recommended deployment model for SPOs on 'mainnet' and 'preview'/'preprod'")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/961"},"#961")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Adapt infrastructure to use Mithril Relay")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1018"},"#1018")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Announce the new signer deployment model in a dev blog post")," 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",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/944"},"#944")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Reactivate Publish Results job in CI")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/978"},"#978")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Clean 'pending_snapshot' directory of aggregator")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/983"},"#983")),(0,a.kt)("li",{parentName:"ul"},"Completed the issue ",(0,a.kt)("inlineCode",{parentName:"li"},"Update OpenAPI spec examples")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/1000"},"#1000")))),(0,a.kt)("li",{parentName:"ul"},"Worked on refactoring:",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"Completed the issue 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Arnauld Bailly recently published\n",(0,n.kt)("a",{parentName:"p",href:"https://hackage.haskell.org/package/quickcheck-dynamic"},(0,n.kt)("inlineCode",{parentName:"a"},"quickcheck-dynamic")),"\nlibrary on Hackage.  The networking team is slowly progressing towards\npublishing ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim"},"io-sim")," and related packages, checkout the progress\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/orgs/input-output-hk/projects/19/views/24"},"here"),"."),(0,n.kt)("p",null,"Thanks to Arnaud Bailly our ",(0,n.kt)("a",{parentName:"p",href:"https://input-output-hk.github.io/cardano-updates"},"Cardano Updates")," website has\na new look & feel!  It's using ",(0,n.kt)("a",{parentName:"p",href:"https://docusaurus.io"},"docusaurus.io"),"."),(0,n.kt)("p",null,"Christian Taylor carried recently a detailed analysis of our open-source\nrepositories.  He collected many interesting metrics, which allows us to see\nwhere we need to improve as an open-source project to make the Cardano project\nand many smaller related libraries which we maintain be more open and available\nfor open-source contributors."),(0,n.kt)("p",null,"The graph below shows which documents the 55 most important Cardano\nrepositories are missing the most:\n",(0,n.kt)("img",{alt:"Documentation Adoption",src:r(59380).Z,width:"1493",height:"716"}),"\nYou can expect we will improve in these metrics in the coming weeks."))}h.isMDXComponent=!0},59380:(e,t,r)=>{r.d(t,{Z:()=>a});const a=r.p+"assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png"}}]);
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We use ",(0,n.kt)("inlineCode",{parentName:"p"},"200MB")," limit for all tests except for\n",(0,n.kt)("inlineCode",{parentName:"p"},"network-mux")," tests which use ",(0,n.kt)("inlineCode",{parentName:"p"},"350MB")," limit, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4702"},"ouroboros-network#4702"),"."),(0,n.kt)("p",null,"We refactored one of our tests to use ephemeral ports thus allowing it to\nrun concurrently, see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4702"},"ouroboros-network#4702"),"."),(0,n.kt)("p",null,"We merged ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4623"},"ouroboros-network#4623")," which fixes a bunch of test failures."),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4694"},"inbound-governor: connection leak")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4607"},"connection-manager: assertion failure")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4605"},"not released connection"))),(0,n.kt)("p",null,"All of them were due to a bug in test logic rather than a bug in production\ncode."),(0,n.kt)("h3",{id:"release-process"},"Release Process"),(0,n.kt)("p",null,"We updated our release process & associated scripts, see\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4705"},"ouroboros-network#4705"),"."))}m.isMDXComponent=!0}}]);
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The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.\nOn the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.\nThe Consensus release engineer finished his rotation: version ",(0,a.kt)("inlineCode",{parentName:"p"},"8.3.0-pre")," of ",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-node")," is releasing 2023 September 5."),(0,a.kt)("h2",{id:"utxo-hd"},"UTxO-HD"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We ran the first successful system-level benchmarks for UTxO-HD (see ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-consensus/issues/203"},"#203"),") using the ",(0,a.kt)("em",{parentName:"li"},"in-memory")," backend.",(0,a.kt)("ul",{parentName:"li"},(0,a.kt)("li",{parentName:"ul"},"We observed a factor 12 regression in the forging performance, which we will have to address. 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This design has been formalized in an ",(0,a.kt)("a",{parentName:"p",href:"https://mithril.network/doc/adr/4"},"ADR"),". They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible."),(0,a.kt)("p",null,"Finally, they have worked on upgrading the ",(0,a.kt)("inlineCode",{parentName:"p"},"devnet")," and fixing some flakiness in the end to end tests of the CI."),(0,a.kt)("h2",{id:"low-level-overview"},"Low level overview"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Implemented the redaction of an ADR for handling graceful updates of the Mithril Network ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/671"},"#671")),(0,a.kt)("li",{parentName:"ul"},"Worked on a proof of concept to handle backward compatibilty of exchanged messages with ",(0,a.kt)("inlineCode",{parentName:"li"},"protobuf")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/677"},"#677")),(0,a.kt)("li",{parentName:"ul"},"Worked on a proof of concept to handle backward compatibilty of exchanged messages with ",(0,a.kt)("inlineCode",{parentName:"li"},"avro")," ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/678"},"#678")),(0,a.kt)("li",{parentName:"ul"},"Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/672"},"#672")),(0,a.kt)("li",{parentName:"ul"},"Worked on upgrading the Cardano node of the Mithril ",(0,a.kt)("inlineCode",{parentName:"li"},"devnet"),", as well as fixing flakiness of the CI ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/523"},"#523")),(0,a.kt)("li",{parentName:"ul"},"Prepared and tested the new ",(0,a.kt)("inlineCode",{parentName:"li"},"2302")," distribution pre-release ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease"},"2302.0-prerelease")),(0,a.kt)("li",{parentName:"ul"},"Updated the documentation for SPO to build a signer node in order to better reflect the new release process ",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/mithril/issues/681"},"#681"))))}c.isMDXComponent=!0}}]);
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+"use strict";(self.webpackChunkcardano_updates=self.webpackChunkcardano_updates||[]).push([[89008],{23947:(e,t,o)=>{o.r(t),o.d(t,{assets:()=>l,contentTitle:()=>u,default:()=>d,frontMatter:()=>r,metadata:()=>s,toc:()=>p});var n=o(87462),a=(o(67294),o(3905)),i=o(22004);const r={title:"Network Team Update",slug:"2022-09-27-network",authors:"coot",tags:["network"],hide_table_of_contents:!1},u=void 0,s={permalink:"/cardano-updates/2022-09-27-network",editUrl:"https://github.com/input-output-hk/cardano-updates/tree/main/blog/2022-09-27-network.md",source:"@site/blog/2022-09-27-network.md",title:"Network Team Update",description:"Network Update",date:"2022-09-27T00:00:00.000Z",formattedDate:"September 27, 2022",tags:[{label:"network",permalink:"/cardano-updates/tags/network"}],readingTime:2.24,hasTruncateMarker:!1,authors:[{name:"Marcin Szamotulski",title:"Network Team Lead",url:"https://github.com/coot",imageURL:"https://github.com/coot.png",key:"coot"}],frontMatter:{title:"Network Team Update",slug:"2022-09-27-network",authors:"coot",tags:["network"],hide_table_of_contents:!1},prevItem:{title:"Ledger Team Update",permalink:"/cardano-updates/2022-09-30-ledger"},nextItem:{title:"Consensus Team Update",permalink:"/cardano-updates/2022-09-20-consensus"}},l={authorsImageUrls:[void 0]},p=[{value:"Network Update",id:"network-update",level:2},{value:"Ouroboros Network",id:"ouroboros-network",level:3},{value:"Ouroboros Consensus",id:"ouroboros-consensus",level:3},{value:"Some older items, which were not announced",id:"some-older-items-which-were-not-announced",level:4},{value:"Cardano Node",id:"cardano-node",level:3},{value:"IO-Sim",id:"io-sim",level:3},{value:"Typed Protocols",id:"typed-protocols",level:3},{value:"Input Endorsers Simulation",id:"input-endorsers-simulation",level:3}],k={toc:p},h="wrapper";function d(e){let{components:t,...o}=e;return(0,a.kt)(h,(0,n.Z)({},k,o,{components:t,mdxType:"MDXLayout"}),(0,a.kt)("h2",{id:"network-update"},"Network Update"),(0,a.kt)("h3",{id:"ouroboros-network"},"Ouroboros Network"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We finished high and low level ",(0,a.kt)("em",{parentName:"li"},"peer sharing")," design. See\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan"},"Peer Sharing Implementation Plan")),(0,a.kt)("li",{parentName:"ul"},"We started working on low-level design of ",(0,a.kt)("em",{parentName:"li"},"eclipse evasion")," (work in\nprogress)."),(0,a.kt)("li",{parentName:"ul"},"We decided to use ",(0,a.kt)("strong",{parentName:"li"},"peer sharing")," instead of overloaded and ambiguous ",(0,a.kt)("em",{parentName:"li"},"gossip")," term.\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3980"},"PR input-output-hk/ouroboros-network#3980")),(0,a.kt)("li",{parentName:"ul"},"We fixed technical dept\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3905"},"issue input-output-hk/cardano-node#3905")," in\nthe simulation testing of diffusion\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4004"},"PR input-output-hk/cardano-node#4004")),(0,a.kt)("li",{parentName:"ul"},"We deployed all our nodes using our new nix based deployment architecture.\nWhen deploying we found an issue in the\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/issues/3752"},(0,a.kt)("inlineCode",{parentName:"a"},"RTView")),".")),(0,a.kt)("h3",{id:"ouroboros-consensus"},"Ouroboros Consensus"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"Recently we found out that the consensus does not log exceptions thrown during\nintiialisation.  This was fixed in\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4015"},"PR input-output-hk/ouroboros-network#4015"),"\nAs part of this pull request we also changed that all exceptions rethrown by\nthe connection handler thread are wrapped in ",(0,a.kt)("inlineCode",{parentName:"li"},"ExceptionInHandler"),".")),(0,a.kt)("h4",{id:"some-older-items-which-were-not-announced"},"Some older items, which were not announced"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We identified and fixed an issue related to socket activation (socket options\nwhere not set for sockets passed through socket activation).\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3979"},"PR input-output-hk/cardano-node#3979"),"\nThis fix will be released in the next ",(0,a.kt)("inlineCode",{parentName:"li"},"cardano-node")," release.")),(0,a.kt)("h3",{id:"cardano-node"},"Cardano Node"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We extended the NixOs service module so that one can modify ",(0,a.kt)("inlineCode",{parentName:"li"},"socketPath"),",\n",(0,a.kt)("inlineCode",{parentName:"li"},"runtimeDir"),", ",(0,a.kt)("inlineCode",{parentName:"li"},"databasePath"),", ",(0,a.kt)("inlineCode",{parentName:"li"},"traceSocketPathAccept"),",\n",(0,a.kt)("inlineCode",{parentName:"li"},"traceSocketPathConnect")," and ",(0,a.kt)("inlineCode",{parentName:"li"},"stateDir")," options.\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4196"},"PR input-output-hk/cardano-node#4196"))),(0,a.kt)("h3",{id:"io-sim"},"IO-Sim"),(0,a.kt)("p",null,"We resolved a number of issues before release of ",(0,a.kt)("inlineCode",{parentName:"p"},"io-sim")," on hackage:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/2797"},"issue input-output-hk/ouroboros-network#2797")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/2650"},"issue input-output-hk/ouroboros-network#2650")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3436"},"issue input-output-hk/ouroboros-network#3436")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/2588"},"issue input-output-hk/ouroboros-network#2588")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/2587"},"issue input-output-hk/ouroboros-network#2587")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/2586"},"issue input-output-hk/ouroboros-network#2586"))),(0,a.kt)("p",null,"See ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/24"},"PR #24"),"."),(0,a.kt)("p",null,"We also improved experience for contributors of ",(0,a.kt)("inlineCode",{parentName:"p"},"io-sim")," and ",(0,a.kt)("inlineCode",{parentName:"p"},"typed-protocols")," by adding issue templates:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/25"},"PR input-output-hk/io-sim#25"))),(0,a.kt)("h3",{id:"typed-protocols"},"Typed Protocols"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},"We pushed a branch which identifies a GHC quirk:\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem"},"coot/typed-protocols-rewrite-StateToken-problem"),".\nThat's too be resolved in order to push forward review of the redesign in\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/typed-protocols/pull/3"},"PR input-output-hk/typed-protocols#3"),"."),(0,a.kt)("li",{parentName:"ul"},"As for ",(0,a.kt)("inlineCode",{parentName:"li"},"io-sim"),", we wrote issue templates:\n",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/typed-protocols/pull/11"},"PR input-output-hk/typed-protocols#11"))),(0,a.kt)("h3",{id:"input-endorsers-simulation"},"Input Endorsers Simulation"),(0,a.kt)("p",null,"New features include:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Histograms of block arrival frequency, for both network (inbound) and CPU\n(block validation). This is interesting to check that we're not overloading\nthe CPU block validation capacity, or network link capacity. Or alternatively\nto observe the behaviour in an overload situation if we set the block\ngeneration rate high enough.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},'Pie chart of utilisation of TCP links. This shows how small a fraction of\nlinks are being used at any one time, and shows that once the system "warms\nup" and is operating stably, most block delivery is ballistic.')),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Showing off the new screen layout combinators, that let us put multiple\ncharts, titles etc on screen at once and scale them to whatever screen or\nvideo resolution we like without having to tweak numbers (this example is\nscaled to fit 1080HD video resolution)."))),(0,a.kt)(i.Z,{playing:!0,controls:!0,url:"/p2p-relay-5.mp4",mdxType:"ReactPlayer"}))}d.isMDXComponent=!0}}]);
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Now we are ready to run\nintegration tests and system-level benchmarks."),(0,r.kt)("h4",{id:"genesis"},"Genesis"),(0,r.kt)("p",null,"We identified and fixed a slowdown in cross-era forecasting that was inhibiting\nour efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%\nspeedup in full sync times in the baseline."),(0,r.kt)("p",null,"We also started prototyping a self-contained implementation of the Genesis\ndynamics (in particular of the parts intentionally not part of the ChainSync\nJumping prototype) that furthered our understanding of subtleties and edge\ncases."),(0,r.kt)("h4",{id:"support"},"Support"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We worked on designing integration of new VRF and KES crypto into consensus.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("inlineCode",{parentName:"li"},"Crypto")," class was split into two parts: ",(0,r.kt)("inlineCode",{parentName:"li"},"Crypto")," and ",(0,r.kt)("inlineCode",{parentName:"li"},"HeaderCrypto"),"."),(0,r.kt)("li",{parentName:"ul"},"With the Ledger team's help, we refactored ",(0,r.kt)("inlineCode",{parentName:"li"},"cardano-ledger")," to use a proxy\ntype for VRF.")))),(0,r.kt)("h4",{id:"conway-era"},"Conway era"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"PR went through its second review round. It is about to be merged, but it got\ndelayed due to people's availability during Christmas break.")),(0,r.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We improved the capabilities of our ",(0,r.kt)("inlineCode",{parentName:"li"},"io-sim")," library, which is key for testing\nand simulating Cardano components."),(0,r.kt)("li",{parentName:"ul"},"We removed thunks from epoch translations in the ledger, which is important\nfor reducing memory consumption of the Cardano node.")),(0,r.kt)("h4",{id:"fostering-collaboration"},"Fostering collaboration"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"We added a tutorial on how to instantiate the Consensus layer to run custom\nledgers. This should be a valuable resource to people looking to roll their\nown custom blockchain (either for commercial or research purposes)."),(0,r.kt)("li",{parentName:"ul"},"We added an overview of consensus to the ",(0,r.kt)("a",{parentName:"li",href:"https://input-output-hk.github.io/ouroboros-network/"},"top level\ndocumentation")," of\nouroboros-network. This overview describes the consensus components and adds a\nhyperlinked map to the modules documentation.")),(0,r.kt)("h3",{id:"next-steps"},"Next steps"),(0,r.kt)("h4",{id:"utxo-hd-1"},"UTxO HD"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Evaluate the extensibility of the prototype. Moving the UTxO to disk is only\nthe first step towards reducing the memory requirements of Cardano node, and\nensuring its long term sustainability. In the future, we plan on moving other\nlarge maps, such as delegation maps. The prototype should be able to\naccommodate these changes without any major modifications."),(0,r.kt)("li",{parentName:"ul"},"Start the integration with other downstream components, such as the wallet and\ndb-sync. The idea is to identify and address any potential pain points that\nmight arise during this integration."),(0,r.kt)("li",{parentName:"ul"},"Run integration tests and system-level benchmarks.")),(0,r.kt)("h4",{id:"genesis-1"},"Genesis"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish benchmarking and tuning the fast-path ChainSync Jumping prototype"),(0,r.kt)("li",{parentName:"ul"},"Expand and optimize the self-contained implementation of the Disconnect Rule\n(including density comparisons and the LoE)"),(0,r.kt)("li",{parentName:"ul"},"Develop documentation and smoke tests for these components."),(0,r.kt)("li",{parentName:"ul"},"Start modifying the ChainSync Client for the LoP and LoR.")),(0,r.kt)("h4",{id:"support-1"},"Support"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Help the Network team with diagnosing performance regression in block\nproduction.")),(0,r.kt)("h4",{id:"tech-debt"},"Tech debt"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Fix property-test failures concerning iterators (",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/3999"},"#3999")," and\n",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4183"},"#4183"),").")),(0,r.kt)("h4",{id:"fostering-collaboration-1"},"Fostering collaboration"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish ",(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4145"},"mapping consensus"),".")),(0,r.kt)("h3",{id:"risks"},"Risks"),(0,r.kt)("h4",{id:"utxo-hd-2"},"UTxO HD"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Moving other parts of the ledger state to disk might require a major redesign\nof the prototype. 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diff --git a/assets/js/db50202c.71a9a110.js b/assets/js/db50202c.71a9a110.js
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In the\nlast update, we informed about a performance regression, but it turns out it\nonly affects block producers, and thus we highly advise against running it on\nsuch nodes.  Further investigation is required to find the cause of it."),(0,o.kt)("p",null,"On IOG's benchmarking cluster we have seen quite a good performance improvement\non block propagation itself.  The cluster is running a static topology with\nvalency 6 (each node is connected to 6 other nodes).  In which every of the 50\nnodes are block producers.  The setup of this network is the same as mainnet.\nWe've seen 40-50% performance improvement on block propagation comparing to the\nsame cluster deployed with the same topology but using non-P2P nodes.  We think\nthis performance improvement is caused by using full duplex connections.  Quite\nlikely the transaction traffic floating in both directions on the same TCP\nconnection helps to keep the TCP window open.  Note that in a cluster of 50\nnodes with valency 6 the probability of having at least one duplex connection\nis more than 50%.  We don't expect the same improvement on mainnet because the\nnetwork is much wider and the transaction traffic is not as large."),(0,o.kt)("p",null,"Just before the release we squashed two small bugs:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4163"},"issue #4163")," - top level integration bug in ",(0,o.kt)("inlineCode",{parentName:"li"},"keep-alive"),";"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/issues/4177"},"issue #4177")," - a bug in ",(0,o.kt)("inlineCode",{parentName:"li"},"outbound-governor"),";"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4165"},"PR #4165")," - a fix ",(0,o.kt)("inlineCode",{parentName:"li"},"cardano-ping")," support of ",(0,o.kt)("inlineCode",{parentName:"li"},"NodeToNodeV_10"),".")),(0,o.kt)("h3",{id:"peer-sharing"},"Peer Sharing"),(0,o.kt)("p",null,"We were carrying a review of ",(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"peer sharing PR"),"."),(0,o.kt)("h3",{id:"deltaq"},"DeltaQ"),(0,o.kt)("p",null,"Neil Davies was invited to give a guest lecture entitled ",(0,o.kt)("inlineCode",{parentName:"p"},"Avoiding System Catastrophes")," at ",(0,o.kt)("a",{parentName:"p",href:"https://uclouvain.be/en/index.html"},"UCLouvain"),"."),(0,o.kt)("h2",{id:"what-have-we-achieve-last-sprint"},"What have we achieve last sprint"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4163"},"issue #4163"),": we found out that a control message is not passed to the\n",(0,o.kt)("inlineCode",{parentName:"p"},"keep-alive")," mini-protocol, this results in every demotion executing demotion\ntimeout rather than a graceful termination.  With the fix the node will no longer log:"),(0,o.kt)("pre",{parentName:"li"},(0,o.kt)("code",{parentName:"pre",className:"language-json"},'{ "kind": "PeerStatusChangeFailure"\n, "peerStatusChangeType": "WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})"\n, "reason": "TimeoutError"\n}\n'))),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4177"},"issue #4177"),": we fixed an assertion failure in the ",(0,o.kt)("inlineCode",{parentName:"p"},"outbound-governor"),"; now\nwe don't try demoted peers which are being demoted already.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4155"},"PR #4155"),": we refactored ",(0,o.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," packages.  There's a top level\n",(0,o.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus-diffusion")," package which integrates ",(0,o.kt)("inlineCode",{parentName:"p"},"network"),"\n& ",(0,o.kt)("inlineCode",{parentName:"p"},"consensus")," code.  We also introduced:"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("inlineCode",{parentName:"li"},"ouroboros-network-api")," package which contains the API shared between\n",(0,o.kt)("inlineCode",{parentName:"li"},"network")," & ",(0,o.kt)("inlineCode",{parentName:"li"},"conensus"),";"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("inlineCode",{parentName:"li"},"ouroboros-network-mock")," package which contains mock API used for testing\n(e.g. a mock chain & chain producer, etc.)"),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("inlineCode",{parentName:"li"},"ouroboros-network-protocols")," package which contains implementation of all\n(but ",(0,o.kt)("inlineCode",{parentName:"li"},"handshake"),") mini-protocols, exposes a ",(0,o.kt)("inlineCode",{parentName:"li"},"testlib")," and contains ",(0,o.kt)("inlineCode",{parentName:"li"},"test"),"\nand ",(0,o.kt)("inlineCode",{parentName:"li"},"cddl")," components.")),(0,o.kt)("p",{parentName:"li"},"This made the dependency tree of ",(0,o.kt)("inlineCode",{parentName:"p"},"network")," & ",(0,o.kt)("inlineCode",{parentName:"p"},"consensus")," packages much\ncleaner.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4169"},"PR #4169"),": we described the usage of release branches in ",(0,o.kt)("inlineCode",{parentName:"p"},"CONTRIBUTING.md"),"\ndoc.")),(0,o.kt)("li",{parentName:"ul"},(0,o.kt)("p",{parentName:"li"},(0,o.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4165"},"PR #4165"),": we fixed ",(0,o.kt)("inlineCode",{parentName:"p"},"cardano-ping")," support of ",(0,o.kt)("inlineCode",{parentName:"p"},"NodeToNodeV_10")," protocol."))),(0,o.kt)("h3",{id:"deltaq-1"},"DeltaQ"),(0,o.kt)("p",null,"The abstract of the talk:"),(0,o.kt)("blockquote",null,(0,o.kt)("p",{parentName:"blockquote"},"An essential step to ensuring that distributed systems are fit for\npurpose."),(0,o.kt)("p",{parentName:"blockquote"},"Distributed systems have become an integral part of our society and\ndaily lives. We are, both implicitly and explicitly, individually as well as\ncollectively, placing ever more trust in them."),(0,o.kt)("p",{parentName:"blockquote"},"Are they worthy of this trust?  Our need for them to be \u2018fit-for-purpose\u2019 goes\nwell beyond notions of functional correctness (i.e. never getting the wrong\nanswer). We need them to deliver the desired outcomes in a timely, robust,\nreliable, resilient fashion, at scale and in a sustainable way (both\neconomically and environmentally)."),(0,o.kt)("p",{parentName:"blockquote"},"This all sounds like a worthy aspiration, but what would be a practical\napproach to capturing and reasoning about these issues? How can we ensure that\nsystems can meet their fit-for-purpose objectives, not just in their design but\nas they are deployed, encounter the imperfect world, are scaled to become\neconomic, and proceed into ongoing maintenance?"),(0,o.kt)("p",{parentName:"blockquote"},"This talk will illustrate how the notions of Outcomes and Quality Attenuation\n(as captured by \u2018\u2206Q\u2019) are being used to both frame the necessary notions and\nprovide a basis for assuring the refinement and reification of such systems,\nfrom initial concept to operational infrastructure.")),(0,o.kt)("p",null,"You can download the slides from ",(0,o.kt)("a",{target:"_blank",href:n(98946).Z},"here"),"."))}d.isMDXComponent=!0},98946:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf"}}]);
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"),(0,n.kt)("li",{parentName:"ul"},"Opened a PR for raw bearer branch in ouroboros network ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4395"},"PR4395")),(0,n.kt)("li",{parentName:"ul"},"Resolved a bug where the agent node did not properly closed connections"),(0,n.kt)("li",{parentName:"ul"},"Updated version of ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/io-sim/pull/70"},"IOSim")," allowed us to finish a first version of KES agent.")),(0,n.kt)("h3",{id:"sidechains"},"Sidechains"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Included ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a"},"BLS12-381")," curve to our branch of halo2curves"),(0,n.kt)("li",{parentName:"ul"},"Included ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f"},"JubJub")," to our branch of halo2curves ")),(0,n.kt)("h3",{id:"musig2"},"MuSig2"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Minor reorg ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/42"},"PR#42")),(0,n.kt)("li",{parentName:"ul"},"Started including fuzz testing for deserialisation ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/musig2/pull/43"},"PR#"))))}m.isMDXComponent=!0}}]);
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We held a session with the consensus & the\nscientists; we got a positive feedback on the design."),(0,a.kt)("p",null,"Further we focused on implementation of peer sharing.  We produced a ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan"},"detail\ndesign")," and an ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"early implementation"),"."),(0,a.kt)("p",null,"We prepared the ",(0,a.kt)("em",{parentName:"p"},"P2P Single Relay Release")," (",(0,a.kt)("inlineCode",{parentName:"p"},"cardano-node-1.35.5"),").  It\nincludes over ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4120"},"130 patches")," of network stack improvements over the\nprevious version ",(0,a.kt)("inlineCode",{parentName:"p"},"1.35.4"),", which were accomplished over a longer period of\ntime.  Among them are both bug fixes and UX improvements for stake pool\noperators like simplified format of the ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4563"},"topology file"),", or\nimprovements in the logged messages:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4015"},"tracing of early consensus exceptions")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4127"},"tracing of demotion of local root peers")," (traced with\n",(0,a.kt)("inlineCode",{parentName:"li"},"Warning")," severity), the trace is called ",(0,a.kt)("inlineCode",{parentName:"li"},"TraceDemoteLocalAsynchronous"),", in\n",(0,a.kt)("inlineCode",{parentName:"li"},"json")," format it is encoded as ",(0,a.kt)("inlineCode",{parentName:"li"},"DemoteLocalAsynchronous"),".  For an SPO\ntracking these demotion is vital (such demotion could indicate that a block\nproducer is no longer connected to its relays or vice versa)")),(0,a.kt)("p",null,"We also provide better integration with ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3979"},"systemd")," (socket\nactivation improvements) or improvements in the networking stack:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3785"},"exit policies"),","),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3915"},"peer metrics improvements"),","),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4106"},"DNS TTL")," improvements (which make it harder to misconfigure the\nsystem, an issue discovered by the performance & monitoring team),"),(0,a.kt)("li",{parentName:"ul"},"do not trigger inbound idle timeout for ",(0,a.kt)("inlineCode",{parentName:"li"},"node-to-client")," connections (",(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/3844"},"pr\n#3844"),"), an issue reported to us by Matthias Benkort from\nCardano Foundation.")),(0,a.kt)("p",null,"Duncan has been making progress with the input endorsers demo. His simulation\nprovides a useful animated visualisation and live quantification of behaviour\nof the modeled design."),(0,a.kt)("p",null,"We also improved our e2e diffusion simulation by implementing header-body\nsplit, similar to what the real implementation does."),(0,a.kt)("p",null,"We also made some advances towards our future goals of P2P release for block\nproducer nodes (",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/3800"},"pr #3800")," - in review) & for Daedalus users\n(",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3968"},"pr #3690")," - merged)."),(0,a.kt)("h3",{id:"detailed-log"},"Detailed log"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We expanded diffusion simulation with block-fetch protocol bringing it closer\nto the production system.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We addressed some additional technical depth in diffusion simulation")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We slightly improved documentation & CI of io-sim and typed-protocols\nrepositories for open-source contributors.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We closed a number of issues towards publishing io-sim on Hackage (only two\nessential issues are left open).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We pushed a branch of typed-protocols which captures one of the developer UX\nproblems in the API which we need to solve.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and fixed an issue related to systemd sockets.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and fixed an issue in consensus initialisation not giving\nfeedback on early errors.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We deployed RT View, identified a number of issues which were communicated to\nthe performance & monitoring team.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We finished high level & detailed design of peer sharing, very early\nimplementation of peer sharing is done (note that peer sharing cannot be\nsafely deployed without eclipse evasion & genesis).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We finished high level design of eclipse evasion, and started working on\na detailed design.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We were assigned the role of release engineer for 1.35.5 release (the P2P\nsingle relay release); we prepared a cardano-node for 1.35.5 release which\ncontains more than 130 patches of just network stack improvements done over\nlast few months.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We diagnosed and fixed an tricky bug in the peer state actions (a component\nwhich sits between outbound governor and connection manager). That bug was\nintroduced earlier this year and never released. It was caught by the QA\ntesting framework. We expanded our diffusion simulation to cover such case and\nalso mitigated a chance for reintroducing such a bug in future.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We identified and quite likely mitigated a misconfiguration in the\nbenchmarking cluster (next benchmarking run will confirm our hypothesis).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We simplified the format of p2p topology file, we got positive feedback from\nSPOs.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We raised severities of some of the logging messages, which is an important\nimprovement for SPOs, exchanges and other users of the system.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"We worked on input endorsers simulation which gives both animated and\nquantified live feedback on network operation, using a simplified model of\na TCP/IP network. "))),(0,a.kt)("h2",{id:"next-quarter"},"Next quarter"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Release the Single Relay P2P Release ",(0,a.kt)("inlineCode",{parentName:"p"},"1.35.5"),".")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Carry on with Peer Sharing (review, testing).")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Deliver a talk at ",(0,a.kt)("a",{parentName:"p",href:"https://sites.uclouvain.be/OPODIS2022/"},"Conference on Principles of Distributed Systems 2022")," in Brussels, Belgium.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Present Detailed Design of Eclipse Evasion and start implementation phase.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Work on P2P Block Producer release.")),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("p",{parentName:"li"},"Carry on with publishing of ",(0,a.kt)("inlineCode",{parentName:"p"},"io-sim")," on ",(0,a.kt)("inlineCode",{parentName:"p"},"Hackage"),"."))))}d.isMDXComponent=!0}}]);
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They also worked on a \\"dirt road\\" implementation for the\n\\"Ignored init tx\\" notification, improving the robustness of the system.'),(0,n.kt)("p",null,"The team finalized preparations for the Cardano Summit presentation, including\nimplementation of the ",(0,n.kt)("inlineCode",{parentName:"p"},"hydra-poll")," example DApp."),(0,n.kt)("p",null,'If you happen to read this and attend the Summit in Dubai, make sure to check\nout our Masterclass about \\"Developing Hydra + Mithril for Scaling Cardano\\" on\nFriday, November 3 at 14:00-15:30 local time in the \\"Al Dar\\" room!'),(0,n.kt)("h3",{id:"what-did-the-team-achieve-this-week"},"What did the team achieve this week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Fix ",(0,n.kt)("inlineCode",{parentName:"li"},"gen-hydra-keys")," command to not overwrite existing keys\n",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/1136"},"#1136")),(0,n.kt)("li",{parentName:"ul"},"Fixed the rewritten ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-tui"),(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/1113"},"#1113"),(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/1137"},"#1137")),(0,n.kt)("li",{parentName:"ul"},"Finalized cardano summit preparation\n",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/1109"},"#1109")),(0,n.kt)("li",{parentName:"ul"},"Implemented the ",(0,n.kt)("inlineCode",{parentName:"li"},"hydra-poll")," example DApp ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/cardano-scaling/hydra-poll"},"link to\nrepository")),(0,n.kt)("li",{parentName:"ul"},'Dirt road implementation for \\"Ignored init tx\\" notification\n',(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/hydra/issues/529"},"#529"))),(0,n.kt)("h3",{id:"what-are-the-goals-of-next-week"},"What are the goals of next week"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"Attend cardano summit and deliver presentation"),(0,n.kt)("li",{parentName:"ul"},"Clarify / close user created issues"),(0,n.kt)("li",{parentName:"ul"},"Build ",(0,n.kt)("inlineCode",{parentName:"li"},"aarch64-darwin")," binaries in CI")))}h.isMDXComponent=!0}}]);
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variables and prepared statements via pgsqlrc for faster and easier analysis of network state"),(0,n.kt)("li",{parentName:"ul"},"The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable"),(0,n.kt)("li",{parentName:"ul"},"Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0"),(0,n.kt)("li",{parentName:"ul"},"For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true"),(0,n.kt)("li",{parentName:"ul"},"Template updates include:",(0,n.kt)("ul",{parentName:"li"},(0,n.kt)("li",{parentName:"ul"},"Adds optional TF AZ declaration on ec2 resources"),(0,n.kt)("li",{parentName:"ul"},"Adds a cardano node p2p dashboard to the grafana cloud stack"),(0,n.kt)("li",{parentName:"ul"},"Adds a dbsync pool performance analysis query"),(0,n.kt)("li",{parentName:"ul"},"Updates python distribute and delegation scripts 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"),(0,n.kt)("h2",{id:"what-we-achieved"},"What we achieved"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3521"},"pull-3521"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3554"},"pull-3554"),"] Improved Governance model (GovernanceProcedures, ProposalProcedure)"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3520"},"pull-3520"),"] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3531"},"pull-3531"),"] Refactored and simplified code interacting with Plutus"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3558"},"pull-3558"),"] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3550"},"pull-3550"),"] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed."),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3551"},"pull-3551"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3546"},"pull-3546"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3472"},"pull-3472"),"] Updated tools and added some small improvements "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3146"},"issue-3146"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3498"},"pull-3498"),"] Introduced Conway protocol parameters "),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/2948"},"issue-2948"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3499"},"pull-3499"),"] Implemented ConwayGenesis with the new protocol parameters")),(0,n.kt)("h2",{id:"what-is-currently-in-progress"},"What is currently in progress"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3494"},"issue-3494"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3495"},"pull-3495"),"] Implement returning of proposal deposits"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3436"},"issue-3436"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3523"},"pull-3523"),"] Implement transferring lovelace from UTxO to treasury"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3509"},"issue-3509"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3552"},"pull-3552"),"] Add script-support for the committee hot key"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3532"},"issue-3532"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3556"},"pull-3556"),"] Add script-support for the constitution"),(0,n.kt)("li",{parentName:"ul"},"[",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/issues/3543"},"issue-3543"),"] [",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3557"},"pull-3557"),"] Improve the 'new committee' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support")))}h.isMDXComponent=!0}}]);
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2022",tags:[{label:"ledger",permalink:"/cardano-updates/tags/ledger"}],readingTime:2.87,hasTruncateMarker:!1,authors:[{name:"Jared Corduan",title:"Ledger Team Lead",url:"https://github.com/JaredCorduan",imageURL:"https://github.com/JaredCorduan.png",key:"JaredCorduan"}],frontMatter:{title:"Ledger Team Update",slug:"2022-12-09-ledger",authors:"JaredCorduan",tags:["ledger"],hide_table_of_contents:!1},prevItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2022-12-09-hydra"},nextItem:{title:"Hydra Team Update",permalink:"/cardano-updates/2022-12-02-hydra"}},d={authorsImageUrls:[void 0]},u=[{value:"High level summary",id:"high-level-summary",level:2},{value:"Lower level summary",id:"lower-level-summary",level:2},{value:"Cardano ledger API",id:"cardano-ledger-api",level:4},{value:"Architectural Decision Records (ADRs)",id:"architectural-decision-records-adrs",level:4},{value:"Tracking individual deposits",id:"tracking-individual-deposits",level:4},{value:"Removing pointer addresses",id:"removing-pointer-addresses",level:4},{value:"Technical debt",id:"technical-debt",level:4}],p={toc:u},s="wrapper";function c(e){let{components:t,...a}=e;return(0,n.kt)(s,(0,r.Z)({},p,a,{components:t,mdxType:"MDXLayout"}),(0,n.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,n.kt)("p",null,"The Plutus tools team at IOG has started helping the ledger team to build out a user friendly\n",(0,n.kt)("inlineCode",{parentName:"p"},"cardano-ledger-api")," package!\nA ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/projects/5"},"GitHub project"),"\nwill be filled out in the days ahead,\npeople interested in the API can use it to follow along and join in on the conversations."),(0,n.kt)("p",null,"The ledger team has started using\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md"},"architectural decision records"),"\nto leave a record of important decisions that the team makes.\nWe will retroactively go back through past decisions and make ADRs for them."),(0,n.kt)("p",null,"The logic to track individual deposits is now nearly in place.\nWe are prioritizing correctness with our first pull request, and will follow up with\nperformance optimizations and general cleanup next."),(0,n.kt)("p",null,"Pointer addresses are being deprecated with the Cardano major protocol version 8.\nSee ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/cardano-foundation/CIPs/pull/374"},"CPS-0002"),"\nfor more context."),(0,n.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,n.kt)("h4",{id:"cardano-ledger-api"},"Cardano ledger API"),(0,n.kt)("p",null,"The ",(0,n.kt)("strong",{parentName:"p"},"Plutus tools team")," has taken our minimal ",(0,n.kt)("inlineCode",{parentName:"p"},"cardano-ledger-api")," package and started filling it\nout and adding much needed documentation.\nThey have also added doctests!\nIn the days to come, the Plutus tools team will map out a lot more work for the API and record\nit in this\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/projects/5"},"GitHub project"),"."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3182"},"pull-3182")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3188"},"pull-3188"))),(0,n.kt)("h4",{id:"architectural-decision-records-adrs"},"Architectural Decision Records (ADRs)"),(0,n.kt)("p",null,"We are now providing more context and leaving a record of important decisions that are made\nin the ledger. The first ADR explains the very lightweight process."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3177"},"pull-3177")," (rendered ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md"},"here"),")")),(0,n.kt)("h4",{id:"tracking-individual-deposits"},"Tracking individual deposits"),(0,n.kt)("p",null,"See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3190/files"},"ADR-3"),"\nfor background.\nWe now have the logic in place to track individual deposits, and a host of property tests\nto make sure that the logic is correct.\nThe current implementation uses more memory than it needs to, and we will address that next,\nwith our hope being to only use one word (8 bytes) per registered stake credential.\nThere is a fair amount of other cleanup needed for general maintainability."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3127"},"pull-3127")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3195"},"pull-3195")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3202"},"pull-3202"))),(0,n.kt)("h4",{id:"removing-pointer-addresses"},"Removing pointer addresses"),(0,n.kt)("p",null,"Pointer addresses, which have never seen any real use\n(there are something like eleven on mainnet), are being deprecated starting at Cardano major\nversion 9.\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/cardano-foundation/CIPs/pull/374"},"CPS-0002")," gives the context.\nWe are disabling them by first preventing transaction outputs containing them\nfrom being serialized by the node at the moment we switch to version 9.\nAt the hard fork after that, we will translate the existing few pointer addresses\nto enterprise addresses."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3174"},"pull-3174"))),(0,n.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3162"},"pull-3162")," - Sometimes we have to put safeguards in place for hard forks which may never\nbe exercised. After we have passed the given hardfork, we are able to clean up the code\nand simplify our logic. We removed all of the ones that we are currently easily able to."),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3165"},"pull-3165")," - We improved the type safety of our code while also discovering and fixing\na serialization bug."),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3172"},"pull-3172")," - We removed dead code."),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3175"},"pull-3175")," - The Allegra and the Mary code used to be coupled in a particular way the we grew to\ndislike. 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We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4422"},"store")," the benchmark data to make it available\nto the GitHub action that ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-consensus/pull/12"},"publishes")," the benchmarks results."),(0,a.kt)("p",null,"Other minor improvements include:"),(0,a.kt)("ul",null,(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4429"},"Removal")," of ",(0,a.kt)("inlineCode",{parentName:"li"},"Test.Util.Classify")," in favour of ",(0,a.kt)("inlineCode",{parentName:"li"},"Test.StateMachine.Labelling"),"."),(0,a.kt)("li",{parentName:"ul"},(0,a.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4423"},"Addition")," of ",(0,a.kt)("inlineCode",{parentName:"li"},"-Wunused-packages")," to the default ",(0,a.kt)("inlineCode",{parentName:"li"},"ghc-options")," for Consensus\npackages.")),(0,a.kt)("h3",{id:"fostering-collaboration"},"Fostering collaboration"),(0,a.kt)("p",null,"We finished moving the Consensus documentation ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4374"},"from"),"\n",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/haskell-lmdb/pull/8"},"to")," ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-consensus"),", in preparation for\nmigrating the code to the latter repository."),(0,a.kt)("h3",{id:"support"},"Support"),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4412"},"released")," ouroboros-consensus 0.3.0.0."),(0,a.kt)("p",null,"We ",(0,a.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4421"},"reduced")," the load in the ",(0,a.kt)("inlineCode",{parentName:"p"},"ouroboros-network")," GitHub actions,\nthereby reducing the time CI jobs take."))}c.isMDXComponent=!0}}]);
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c(e){let{components:t,...a}=e;return(0,o.kt)(u,(0,r.Z)({},d,a,{components:t,mdxType:"MDXLayout"}),(0,o.kt)("h2",{id:"high-level-summary"},"High level summary"),(0,o.kt)("p",null,"The SRE team continues work on cardano environment improvements and general environment maintenance."),(0,o.kt)("p",null,"Some notable recent changes, updates or improvements include:"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"The cardano-node nixos service now supports SIGHUP p2p topology reloading when the ",(0,o.kt)("inlineCode",{parentName:"li"},"useSystemdReload")," option is enabled")),(0,o.kt)("h2",{id:"lower-level-summary"},"Lower level summary"),(0,o.kt)("h3",{id:"capkgs"},"Capkgs"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Update cardano-db-sync and offchain-metadata-tools package paths and/or references: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f"},"capkgs-compare"))),(0,o.kt)("h3",{id:"cardano-node"},"Cardano-node"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/5537"},"cardano-node-pull-5537"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Creates a useSystemdReload bool option for the cardano-node nixos service"),(0,o.kt)("li",{parentName:"ul"},"This will move the topology file(s) to ",(0,o.kt)("inlineCode",{parentName:"li"},"/etc/cardano-node/topology-$i.yaml")," and inject systemd reload hooks for p2p configured cardano-node instances"),(0,o.kt)("li",{parentName:"ul"},"Moving topology files to ",(0,o.kt)("inlineCode",{parentName:"li"},"/etc")," also allows for manual topology updates when a quick test is needed and full service re-deployment isn't desired")))),(0,o.kt)("h3",{id:"cardano-parts"},"Cardano-parts"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Adds a metadata server profile and a number of other features and improvements: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-parts/pull/20"},"cardano-parts-pull-20"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds a new metadata-service profile"),(0,o.kt)("li",{parentName:"ul"},"Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile"),(0,o.kt)("li",{parentName:"ul"},"Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster's static needs, with each cached behind varnish"),(0,o.kt)("li",{parentName:"ul"},"Adds extra node list producers and public producers for cardano-node-topology profile"),(0,o.kt)("li",{parentName:"ul"},"Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch"),(0,o.kt)("li",{parentName:"ul"},"Adds select systemd metrics reporting to grafana-agent profile"),(0,o.kt)("li",{parentName:"ul"},"Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS"),(0,o.kt)("li",{parentName:"ul"},"Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it"),(0,o.kt)("li",{parentName:"ul"},"Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo"),(0,o.kt)("li",{parentName:"ul"},"Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation"),(0,o.kt)("li",{parentName:"ul"},"Adds support for grafana recording rules in the template files"),(0,o.kt)("li",{parentName:"ul"},"Improves cardano-group profile handling of producers with respect to multiple instance nodes"),(0,o.kt)("li",{parentName:"ul"},"Improves grafana-agent 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",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-playground/pull/6"},"cardano-playground-pull-6"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds a new metadata server"),(0,o.kt)("li",{parentName:"ul"},"Adds a new webserver for the cluster's static virtualhost needs"),(0,o.kt)("li",{parentName:"ul"},"Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo"),(0,o.kt)("li",{parentName:"ul"},"Adds systemd metrics monitoring to the cluster"),(0,o.kt)("li",{parentName:"ul"},"Resizes sanchonet machines to support the growing chain"),(0,o.kt)("li",{parentName:"ul"},"Completes migration of preprod from world"),(0,o.kt)("li",{parentName:"ul"},"Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes"),(0,o.kt)("li",{parentName:"ul"},"Updates Justfile for ERA_CMD demo support"),(0,o.kt)("li",{parentName:"ul"},"Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile"),(0,o.kt)("li",{parentName:"ul"},"Migrates book static code to playground from world, with refactor, cleanup and updates"),(0,o.kt)("li",{parentName:"ul"},"Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules")))),(0,o.kt)("h3",{id:"offchain-metadata-tools"},"Offchain-metadata-tools"),(0,o.kt)("ul",null,(0,o.kt)("li",{parentName:"ul"},"Adds db password option with obfuscation plus misc improvements: ",(0,o.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/offchain-metadata-tools/pull/61"},"offchain-metadata-tools-pull-61"),(0,o.kt)("ul",{parentName:"li"},(0,o.kt)("li",{parentName:"ul"},"Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services"),(0,o.kt)("li",{parentName:"ul"},"Updates the nixos service for metadata-webhook service to optionally use an 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We also held a session with\nthe scientists on eclipse evasion."),(0,r.kt)("h2",{id:"detailed-description"},"Detailed description"),(0,r.kt)("h3",{id:"p2p-network-stack"},"P2P Network Stack"),(0,r.kt)("p",null,"During the past two weeks the team focused on p2p single relay release and peer\nsharing.  We found and fixed an important bug recently introduced in one of the\ncomponents of p2p networking stack (fortunately never released).  Together with\na fix, we designed a unit test diffusion simulation as well as quickcheck\nproperty test (both could reproduce it). We also changed the code in a way that\nif such a bug is reintroduced in the future, it will be obvious to diagnose.\nFor more see:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4067"},"ouroboros-network#4067")),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4086"},"ouroboros-network#4086"))),(0,r.kt)("p",null,"Initial benchmarking run of the P2P code was executed.  The results where\nunlike what we see on the mainnet.  We found a possible misconfiguration of the\ncluster (caused by 0 TTL on domain names), which could be the direct cause of\nit.  We wrote a PR which rules out such misconfiguration.  We are awaiting on\nthe next benchmarking results.  See more at:"),(0,r.kt)("p",null,(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4106"},"ouroboros-network#4106")),(0,r.kt)("p",null,"We also started working on P2P single relay release.  The PR\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4120"},"ouroboros-network#4120"),"\nincludes ",(0,r.kt)("em",{parentName:"p"},"108")," patches cherry-picked from the ",(0,r.kt)("inlineCode",{parentName:"p"},"master")," branch.  We started\nworking toward integration these changes against the release branch of\n",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node"),".  Early next week we ought to be able to have an early version\nof ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node")," with ",(0,r.kt)("em",{parentName:"p"},"non experimental P2P support"),"!"),(0,r.kt)("p",null,"For more detailed release plan please see ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/3888"},"P2P - Single\nRelay"),"\nissue."),(0,r.kt)("h3",{id:"consensus"},"Consensus"),(0,r.kt)("p",null,"We identified and fixed missing error reporting in consensus\ninitialisation phase.  See more at\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4015"},"ouroboros-network#4015")),(0,r.kt)("h3",{id:"cardano-node"},"Cardano Node"),(0,r.kt)("p",null,"We also made changes in ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node")," in order to give better experience for\nnode operators.  This includes updating severities of some of the traces as\nwell as implementing new format of the p2p topology file.  For more see:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4563"},"cardano-node#4563"),"."),(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-node/pull/4561"},"cardano-node#4561"))),(0,r.kt)("h3",{id:"peer-sharing"},"Peer Sharing"),(0,r.kt)("p",null,"We continued working on implementation of peer sharing.  We have an early\nimplementation which will be reviewed and analysed in next weeks.  We started\nworking on ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node")," integration.  We need\n",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4392"},"PR #4392")," to be merged\nbefore such integration will be able to land in ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node"),", although this\nis ",(0,r.kt)("em",{parentName:"p"},"not blocking")," us currently.  See more at:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},(0,r.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/ouroboros-network/pull/4019"},"ouroboros-network#4019"))),(0,r.kt)("h3",{id:"eclipse-evasion"},"Eclipse Evasion"),(0,r.kt)("p",null,"We held a session which included Alexander Russel, Sandro Coretti-Drayton and\nNick Frisby from the consensus team.  We discussed high lever design of the\neclipse evasion scheme, which is important for the design and implementation of\n",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-genesis"),".  We got a positive feedback from the researchers."),(0,r.kt)("h3",{id:"io-sim"},"IO-Sim"),(0,r.kt)("p",null,"In this period we made little progress towards releasing ",(0,r.kt)("inlineCode",{parentName:"p"},"IO-Sim")," on Hackage.\nA single ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/io-sim/pull/32"},"PR")," which added\na few missing instances of the ",(0,r.kt)("inlineCode",{parentName:"p"},"STM")," monad."),(0,r.kt)("h3",{id:"open-source"},"Open Source"),(0,r.kt)("p",null,"We made sure the CI runs for PRs which comes from forks (which is important to\naccept contributions from 3rd parties)."),(0,r.kt)("h3",{id:"mithril-cardano-integration"},"Mithril Cardano Integration"),(0,r.kt)("p",null,"We held initial discussions with Arnaud Bailly about possible path to integrate\nmithril to ",(0,r.kt)("inlineCode",{parentName:"p"},"cardano-node")," and take advantage of the ",(0,r.kt)("inlineCode",{parentName:"p"},"ouroboros-network"),"\ndiffusion layer."))}c.isMDXComponent=!0}}]);
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We completed the era-transition and backing store tests, and\nthe mempool tests are advancing at a steady pace. Regarding our work in the\nGenesis design, we continued our collaboration with the research and networking\nteams, and we continue investigating strategies for making the chain-sync\njumping prototype faster."),(0,r.kt)("h2",{id:"high-level-status-report"},"High-level status report"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Finish the UTxO HD prototype: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"We worked on state-machine tests for the mempool, and spotted potential bugs\nin the implementation. Investigation is ongoing."),(0,r.kt)("li",{parentName:"ul"},"We have a set of property tests for the backing store. We still need to\nincorporate the improvements to the LMDB cursor API that these tests\nmade possible."),(0,r.kt)("li",{parentName:"ul"},"We merged the era-transition tests PR."))),(0,r.kt)("li",{parentName:"ul"},"Genesis: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"Design work around Genesis continues in collaboration with researchers and\nthe networking team."),(0,r.kt)("li",{parentName:"ul"},"We continued trying to improve the performance of the chain-sync jumping\nprototype. We gained additional insight on which parameters to tweak next.\nIn spite of the baseline still being faster, the current prototype already\nachieves a significant speedup when compared to the naive approach of simply\nrunning full chain-sync with all peers."))),(0,r.kt)("li",{parentName:"ul"},"Tech debt: on track.",(0,r.kt)("ul",{parentName:"li"},(0,r.kt)("li",{parentName:"ul"},"We clarified a common source of confusion around VRF tie-breaking and\ncross-era chain selection.")))),(0,r.kt)("h2",{id:"workstreams"},"Workstreams"),(0,r.kt)("h3",{id:"finish-the-utxo-hd-prototype"},"Finish the UTxO HD prototype"),(0,r.kt)("p",null,"We continued working on property-tests for the UTxO HD prototype. In particular\nwe merged the ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4073"},"era-transition tests\nPR"),"."),(0,r.kt)("h4",{id:"backing-store-property-tests"},"Backing store property tests"),(0,r.kt)("p",null,"The ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4081"},"backing store property tests\nPR")," has been\nreviewed. The next steps are:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Improve error handling and command generation."),(0,r.kt)("li",{parentName:"ul"},"Add coverage testing to check that we are not failing to cover interesting\ntest cases.")),(0,r.kt)("p",null,"The ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/lmdb-simple/pull/1"},"monadic cursor API"),"\nwent through its first review round. The API is in a relatively stable state.\nThis PR also unifies the ",(0,r.kt)("inlineCode",{parentName:"p"},"cborg")," and ",(0,r.kt)("inlineCode",{parentName:"p"},"serialise"),"-based interfaces to LMDB\noperations. The next steps are:"),(0,r.kt)("ul",null,(0,r.kt)("li",{parentName:"ul"},"Write\n",(0,r.kt)("a",{parentName:"li",href:"https://hackage.haskell.org/package/quickcheck-dynamic"},(0,r.kt)("inlineCode",{parentName:"a"},"quickcheck-dynamic")),"\nstate-machine tests for this API."),(0,r.kt)("li",{parentName:"ul"},"Adapt the changes in the serialisation interface in the backing store property\ntests. This will involve adding boilerplate code in consensus to make up for\nthe removal of the ",(0,r.kt)("inlineCode",{parentName:"li"},"cborg"),"-based interface.")),(0,r.kt)("h2",{id:"lsm-tree-implementation"},"LSM tree implementation"),(0,r.kt)("p",null,"We worked on the ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/issues/4121"},"LSM tree\nprototype"),". In\nparticular, we focused on tuning the LSM tree design to the different workloads\nthat consensus has (eg syncing, normal node operation, etc)."),(0,r.kt)("h3",{id:"benchmarking-the-csj-prototype"},"Benchmarking the CSJ prototype"),(0,r.kt)("p",null,'Work on improving the chain-sync jumping performance is ongoing. In particular\nwe compared the performance of different jump intervals, which, somewhat\nsurprisingly, do not make a significant difference. In particular, we are seeing\nperiodic "plateaus" where the chain-sync tip does not progress, but they are\nmuch longer for the prototype. Our hypothesis is that this seem to be due to a\ncombination of the garbage collector (GC) pauses, and the actual time it takes\nthe non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo\nfragment.'),(0,r.kt)("p",null,"In the coming weeks we will try to shorten these plateaus via a combination of\ntweaking GC options and less synchronisation in the CSJ governor."),(0,r.kt)("p",null,"The following plot shows the performance of the chain-sync jumping prototype\nusing different jumping intervals. It compares the syncing progress by plotting\nthe slots of adopted blocks against time. The baseline is still faster, however\nit is worth noting that the current prototype already achieves a significant\nspeedup when compared to the naive approach of simply running full chain-sync\nwith all peers."),(0,r.kt)("p",null,(0,r.kt)("img",{src:n(39294).Z,width:"998",height:"445"})),(0,r.kt)("p",null,'The second plot shows the syncing progress sliced to a chosen ~5min interval,\nand includes, in addition to the slots of adopted blocks, the slots of the tip\nof the ChainSync fragment. This allows us to see how far ahead of the selected\ntip the CS dynamo is, i.e. how much room we have for BlockFetch not to get\nstalled. It shows periodic behaviour (due to the forecasting limit), and shows\nthat the CS fragment tip is not progressing for significant periods\n("plateaus").'),(0,r.kt)("p",null,(0,r.kt)("img",{src:n(96185).Z,width:"998",height:"445"})),(0,r.kt)("h2",{id:"technical-debt"},"Technical debt"),(0,r.kt)("p",null,"We ",(0,r.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/ouroboros-network/pull/4098"},"clarified")," a\ncommon source of confusion around VRF tie-breaking and cross-era chain\nselection. This PR involved correcting potentially misleading names of\nVRF-related functions, and providing context for a particular VRF value is\nused for tie-breaking."))}u.isMDXComponent=!0},96185:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg"},39294:(e,t,n)=>{n.d(t,{Z:()=>a});const a=n.p+"assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg"}}]);
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resolving problems (see ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/cardano-foundation/CIPs/pull/372"},"CIP-ledger-cbor"),").\nIn particular, we can now address several long standing issues, such as\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/2444"},"issue-2444"),", ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/2965"},"issue-2965"),", and ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/issues/3003"},"issue-3003"),". 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See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-node/pull/4608"},"pull-4608"),"."))}h.isMDXComponent=!0}}]);
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The first ADR explains the very lightweight process."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3177"},"pull-3177")," (rendered ",(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md"},"here"),")")),(0,n.kt)("h4",{id:"tracking-individual-deposits"},"Tracking individual deposits"),(0,n.kt)("p",null,"See ",(0,n.kt)("a",{parentName:"p",href:"https://github.com/input-output-hk/cardano-ledger/pull/3190/files"},"ADR-3"),"\nfor background.\nWe now have the logic in place to track individual deposits, and a host of property tests\nto make sure that the logic is correct.\nThe current implementation uses more memory than it needs to, and we will address that next,\nwith our hope being to only use one word (8 bytes) per registered stake credential.\nThere is a fair amount of other cleanup needed for general maintainability."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3127"},"pull-3127")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3195"},"pull-3195")),(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3202"},"pull-3202"))),(0,n.kt)("h4",{id:"removing-pointer-addresses"},"Removing pointer addresses"),(0,n.kt)("p",null,"Pointer addresses, which have never seen any real use\n(there are something like eleven on mainnet), are being deprecated starting at Cardano major\nversion 9.\n",(0,n.kt)("a",{parentName:"p",href:"https://github.com/cardano-foundation/CIPs/pull/374"},"CPS-0002")," gives the context.\nWe are disabling them by first preventing transaction outputs containing them\nfrom being serialized by the node at the moment we switch to version 9.\nAt the hard fork after that, we will translate the existing few pointer addresses\nto enterprise addresses."),(0,n.kt)("p",null,"See"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3174"},"pull-3174"))),(0,n.kt)("h4",{id:"technical-debt"},"Technical debt"),(0,n.kt)("ul",null,(0,n.kt)("li",{parentName:"ul"},(0,n.kt)("a",{parentName:"li",href:"https://github.com/input-output-hk/cardano-ledger/pull/3162"},"pull-3162")," - Sometimes we have to put safeguards in place for hard forks which may never\nbe exercised. 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+
+/** @license React v16.13.1
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+ */
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+/** @license React v17.0.2
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+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
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+
+/** @license React v17.0.2
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diff --git a/atom.xml b/atom.xml
new file mode 100644
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--- /dev/null
+++ b/atom.xml
@@ -0,0 +1,6233 @@
+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+    <id>https://input-output-hk.github.io/cardano-updates/</id>
+    <title>Cardano Updates Feed</title>
+    <updated>2023-12-06T00:00:00.000Z</updated>
+    <generator>https://github.com/jpmonette/feed</generator>
+    <link rel="alternate" href="https://input-output-hk.github.io/cardano-updates/"/>
+    <subtitle>Regular updates from Cardano Development Teams</subtitle>
+    <icon>https://input-output-hk.github.io/cardano-updates/img/favicon.ico</icon>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-12-06-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-12-06-ledger"/>
+        <updated>2023-12-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway
+conformance testing working. We are now able to generate random valid data with the help
+of constraint based testing framework, apply that data to Conway Ledger rules and verify
+that the output matches to the one produced by the executable version of the Formal Ledger
+Specification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get
+Constitutional Committee query is complete and tested. Various improvements to the
+testing tools. Addition of more test cases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3888" target="_blank" rel="noopener noreferrer">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3902" target="_blank" rel="noopener noreferrer">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3855" target="_blank" rel="noopener noreferrer">pull-3855</a> - Remove unreachable proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3903" target="_blank" rel="noopener noreferrer">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3878" target="_blank" rel="noopener noreferrer">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3896" target="_blank" rel="noopener noreferrer">pull-3896</a> - Fix Brute force failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3904" target="_blank" rel="noopener noreferrer">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3907" target="_blank" rel="noopener noreferrer">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3883" target="_blank" rel="noopener noreferrer">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3909" target="_blank" rel="noopener noreferrer">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3908" target="_blank" rel="noopener noreferrer">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3912" target="_blank" rel="noopener noreferrer">pull-3912</a> - Removed call to tail, and the <!-- -->'<!-- -->watchPulser<!-- -->'<!-- --> test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3852" target="_blank" rel="noopener noreferrer">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3891" target="_blank" rel="noopener noreferrer">pull-3891</a> - Bump plutus to 1.17</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-12-06-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-12-06-mithril"/>
+        <updated>2023-12-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator's performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1173" target="_blank" rel="noopener noreferrer">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1357" target="_blank" rel="noopener noreferrer">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1385" target="_blank" rel="noopener noreferrer">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href="https://github.com/input-output-hk/mithril/issues/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href="https://github.com/input-output-hk/mithril/issues/1390" target="_blank" rel="noopener noreferrer">#1390</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & Tracing Update]]></title>
+        <id>2023-12-04-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-12-04-performance-and-tracing"/>
+        <updated>2023-12-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We've measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we've run system integration level benchmarks in the Conway era for the first time, on the same node version.
+Only Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.
+Currently, we're looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we're interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we've
+improved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The new tracing system is currently receiving usability improvements as we're reworking the output of several trace messages.
+Additionally, we're setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We've been working on adapting various benchmarking workloads, which are defined by our workbench's profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we're implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-12-01-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-12-01-hydra"/>
+        <updated>2023-12-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,
+featuring demonstrations and the preparation of the monthly report. They
+addressed flakiness in tests and enhanced the logs json schema,
+improving overall test reliability. Additionally, the team successfully
+built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform
+support. They further improved the network configuration by detecting
+incompatible persisted states, contributing to overall system
+robustness. Finally, the team released version 0.14.0, highlighting
+their commitment to delivering regular updates and improvements.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Monthly Review
+<a href="https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM" target="_blank" rel="noopener noreferrer">meeting</a>
+packed with demonstrations and prepared monthly report
+<a href="https://github.com/input-output-hk/hydra/pull/1189" target="_blank" rel="noopener noreferrer">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema
+<a href="https://github.com/input-output-hk/hydra/pull/1188" target="_blank" rel="noopener noreferrer">#<!-- -->1188</a><a href="https://github.com/input-output-hk/hydra/issues/1190" target="_blank" rel="noopener noreferrer">#<!-- -->1190</a><a href="https://github.com/input-output-hk/hydra/pull/1192" target="_blank" rel="noopener noreferrer">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI
+<a href="https://github.com/input-output-hk/hydra/pull/1182" target="_blank" rel="noopener noreferrer">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted
+states <a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-11-29-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-29-consensus"/>
+        <updated>2023-11-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team implemented and tested a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/525" target="_blank" rel="noopener noreferrer">patch</a> that does not propagate future headers.
+It is under review, and we expect it can be released in the next Cardano node version.
+On the UTxO-HD front, we <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/510" target="_blank" rel="noopener noreferrer">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.
+With this prototype finished we can start integrating the rest of the code.
+We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/513" target="_blank" rel="noopener noreferrer">investigated</a> the unexpected performance degradation observed when acquiring the block context.
+We also <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre" target="_blank" rel="noopener noreferrer">released Cardano node 8.7.0</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-11-29-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-29-mithril"/>
+        <updated>2023-11-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released the initial version of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer">Mithril client library</a>, enabling developers to integrate core Mithril features into their applications. They also released a new distribution, <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Release of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released" target="_blank" rel="noopener noreferrer">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href="https://github.com/input-output-hk/mithril/issues/1325" target="_blank" rel="noopener noreferrer">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1375" target="_blank" rel="noopener noreferrer">#1375</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-11-24-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-24-hydra"/>
+        <updated>2023-11-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team spent significant time opening a head among
+themselves on <code>mainnet</code> using the release candidate, revealing and
+addressing lurking bugs such as
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a>. Also
+required was this change to dynamically calculate the min utxo value
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, a
+necessary adjustment following the switch to inline datums. The team
+engaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent
+changes and collaborated on drafting feature ideas, including providing
+<a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway support</a>
+for the Hydra roadmap. As part of ongoing improvements, they
+experimented with writing the specification in markdown instead of
+LaTex.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a> in the
+release candidate</li><li>Calculate the min utxo value instead of hard-coding it
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, which is
+needed since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss
+recent changes and way forward</li><li>Drafted features ideas to provide <a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway
+support</a> on the
+Hydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this
+scope</a></li><li>Complete tidying up chain layer via stateless observation changes in
+hydra-node
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway
+<a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#<!-- -->1114</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-11-24-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-24-sre"/>
+        <updated>2023-11-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href="https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href="https://github.com/input-output-hk/cardano-node/pull/5537" target="_blank" rel="noopener noreferrer">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn't desired</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/20" target="_blank" rel="noopener noreferrer">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster's static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/6" target="_blank" rel="noopener noreferrer">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster's static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offchain-metadata-tools">Offchain-metadata-tools<a class="hash-link" href="#offchain-metadata-tools" title="Direct link to heading">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href="https://github.com/input-output-hk/offchain-metadata-tools/pull/61" target="_blank" rel="noopener noreferrer">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-11-22-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-22-ledger"/>
+        <updated>2023-11-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of
+CDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not
+previously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no
+longer allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting
+with Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3858" target="_blank" rel="noopener noreferrer">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3860" target="_blank" rel="noopener noreferrer">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3864" target="_blank" rel="noopener noreferrer">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3859" target="_blank" rel="noopener noreferrer">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3867" target="_blank" rel="noopener noreferrer">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3869" target="_blank" rel="noopener noreferrer">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3863" target="_blank" rel="noopener noreferrer">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3861" target="_blank" rel="noopener noreferrer">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3875" target="_blank" rel="noopener noreferrer">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3876" target="_blank" rel="noopener noreferrer">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3884" target="_blank" rel="noopener noreferrer">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3868" target="_blank" rel="noopener noreferrer">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3792" target="_blank" rel="noopener noreferrer">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3885" target="_blank" rel="noopener noreferrer">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3886" target="_blank" rel="noopener noreferrer">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3854" target="_blank" rel="noopener noreferrer">pull-3854</a> - Integration work for node 8.7.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3872" target="_blank" rel="noopener noreferrer">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3871" target="_blank" rel="noopener noreferrer">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3874" target="_blank" rel="noopener noreferrer">pull-3874</a> - Post release changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3880" target="_blank" rel="noopener noreferrer">pull-3880</a> - Remove generic-monoid dependency</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3887" target="_blank" rel="noopener noreferrer">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-11-22-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-22-mithril"/>
+        <updated>2023-11-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1326" target="_blank" rel="noopener noreferrer">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href="https://github.com/input-output-hk/mithril/issues/1352" target="_blank" rel="noopener noreferrer">#1352</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Initial CIP 1694 Security Analysis and Responses]]></title>
+        <id>2023-11-20-cip1694</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694"/>
+        <updated>2023-11-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule "The Cardano network must always be able to produce new blocks" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a 'guardrails document' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p>]]></content>
+        <author>
+            <name>Kevin Hammond</name>
+            <uri>https://github.com/kevinhammond</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+        <category label="cip1694" term="cip1694"/>
+        <category label="security" term="security"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-11-17-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-17-hydra"/>
+        <updated>2023-11-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed
+misleading errors regarding collect com transactions, resolved a security
+advisory (CVE-2023-42806), and simplified the Hydra Head protocol by using
+inline datums. The team also tackled minor inconsistencies in specifications and
+implementation, documented reasons for potentially dropped close transactions by
+the cardano-node, and collaborated with SundaeLabs on an offline mode for
+<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about
+incremental de-/commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href="https://github.com/input-output-hk/hydra/issues/839" target="_blank" rel="noopener noreferrer">#839</a></li><li>Addressed security advisory <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a> in PR <a href="https://github.com/input-output-hk/hydra/pull/1161" target="_blank" rel="noopener noreferrer">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href="https://github.com/input-output-hk/hydra/pull/1162" target="_blank" rel="noopener noreferrer">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href="https://github.com/input-output-hk/hydra/issues/1104" target="_blank" rel="noopener noreferrer">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href="https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A" target="_blank" rel="noopener noreferrer">open bugs</a></li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this scope</a></li><li>Update dependencies to prepare for Conway <a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & Tracing Update]]></title>
+        <id>2023-11-17-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-17-performance-and-tracing"/>
+        <updated>2023-11-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags
+and mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial
+we can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we've been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we've observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we've seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that
+there is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>
+service on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>For future benchmarks to be built around PlutusV3, we've equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes
+to the execution budgets by developing specialized workloads.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure
+performance for a long service run time, we're currently equipping the service binary with the same capability to
+emit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,
+more detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables
+our team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.
+When alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-11-16-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-16-network"/>
+        <updated>2023-11-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 48]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-48">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22" target="_blank" rel="noopener noreferrer">sprint 48</a><a class="hash-link" href="#high-level-overview-of-sprint-48" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing bootstrap peers, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ioclasses--iosim">IOClasses / IOSim<a class="hash-link" href="#ioclasses--iosim" title="Direct link to heading">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.
+The recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href="https://github.com/input-output-hk/io-sim/pull/117" target="_blank" rel="noopener noreferrer">io-sim#117</a>.
+We released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href="https://github.com/input-output-hk/io-sim/pull/119" target="_blank" rel="noopener noreferrer">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href="https://github.com/input-output-hk/io-sim/pull/123" target="_blank" rel="noopener noreferrer">io-sim#123</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4707" target="_blank" rel="noopener noreferrer">ouroboros-network#4707</a>.
+We continued reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4625" target="_blank" rel="noopener noreferrer">ouroboros-network#4625</a> PR, which refactors
+<code>RootPeersDNS</code> module.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-11-15-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-15-consensus"/>
+        <updated>2023-11-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).
+This <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.
+However, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.
+On the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.
+Therefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/434" target="_blank" rel="noopener noreferrer">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href="https://github.com/jasagredo" target="_blank" rel="noopener noreferrer">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-11-15-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-15-mithril"/>
+        <updated>2023-11-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the 'release-mainnet' aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1343" target="_blank" rel="noopener noreferrer">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href="https://github.com/input-output-hk/mithril/issues/1235" target="_blank" rel="noopener noreferrer">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-11-14-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-14-node-cli-api"/>
+        <updated>2023-11-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-11-01 - 2023-11-14</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/451" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (6/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/448" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (5/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/444" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/443" target="_blank" rel="noopener noreferrer">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/441" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/436" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/435" target="_blank" rel="noopener noreferrer">Update to <code>cardano-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/434" target="_blank" rel="noopener noreferrer">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/432" target="_blank" rel="noopener noreferrer">Release 8.14.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/430" target="_blank" rel="noopener noreferrer">Upgrade cardano-api to 8.30</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/428" target="_blank" rel="noopener noreferrer">Command types for <code>node</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/427" target="_blank" rel="noopener noreferrer">Split governance <code>MIRTransferConstructor</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/426" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/425" target="_blank" rel="noopener noreferrer">Command argument types for <code>drep</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/421" target="_blank" rel="noopener noreferrer">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/419" target="_blank" rel="noopener noreferrer">Command arguments types for stake-pool commands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/364" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/360" target="_blank" rel="noopener noreferrer">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/358" target="_blank" rel="noopener noreferrer">Protocol version change is not common to all versions anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/355" target="_blank" rel="noopener noreferrer">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/354" target="_blank" rel="noopener noreferrer">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/353" target="_blank" rel="noopener noreferrer">Modify foldBlocks to recurse on ledger events </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/352" target="_blank" rel="noopener noreferrer">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/351" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5525" target="_blank" rel="noopener noreferrer">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-11-10-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-10-hydra"/>
+        <updated>2023-11-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published
+the monthly report for October, providing updates on project developments. The
+team delivered a presentation and workshop at the Cardano Summit, contributing
+to community engagement. They implemented a \"dirt road\" solution for the
+\"Ignored init tx\" notification and moved the <code>hydra-poll</code> example project to a
+dedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool
+for Hydra Heads, updated the toolchain to GHC 9.6.3, and made various
+improvements to tooling and code formatting. They addressed specific issues,
+such as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the
+rewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test
+suite by fetching network configurations dynamically. Lastly, they actively
+reviewed pull requests and architectural decision records from the community,
+including contributions from SundaeSwap. An experiment, the Hydra tally, was
+completed and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Published the monthly <a href="https://hydra.family/head-protocol/monthly/2023-10" target="_blank" rel="noopener noreferrer">report for
+october</a></li><li>Given a presentation / workshop at the Cardano summit
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Dirt road implementation for \"Ignored init tx\" notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a> (without
+stateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a
+dedicated
+<a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling
+and code formatting
+<a href="https://github.com/input-output-hk/hydra/pull/1135" target="_blank" rel="noopener noreferrer">#1135</a><a href="https://github.com/input-output-hk/hydra/pull/1152" target="_blank" rel="noopener noreferrer">#1152</a><a href="https://github.com/input-output-hk/hydra/pull/1151" target="_blank" rel="noopener noreferrer">#1151</a><a href="https://github.com/input-output-hk/hydra/pull/1154" target="_blank" rel="noopener noreferrer">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing
+keys <a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Fetch network configurations instead of packaging them into
+hydra-cluster (smoke) test suite
+<a href="https://github.com/input-output-hk/hydra/pull/1156" target="_blank" rel="noopener noreferrer">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)
+<a href="https://github.com/input-output-hk/hydra/pull/1118" target="_blank" rel="noopener noreferrer">#1118</a><a href="https://github.com/input-output-hk/hydra/pull/1157" target="_blank" rel="noopener noreferrer">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor
+existing code towards more stateless observation</li><li>Start work on incremental decommits</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-11-10-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-10-sre"/>
+        <updated>2023-11-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href="https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href="https://github.com/input-output-hk/cardano-parts/pull/18" target="_blank" rel="noopener noreferrer">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href="https://github.com/input-output-hk/cardano-parts/pull/19" target="_blank" rel="noopener noreferrer">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href="https://github.com/input-output-hk/cardano-parts/pull/21" target="_blank" rel="noopener noreferrer">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/5" target="_blank" rel="noopener noreferrer">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migration to play: <a href="https://github.com/input-output-hk/iohk-nix/pull/561" target="_blank" rel="noopener noreferrer">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-11-09-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-09-db-sync"/>
+        <updated>2023-11-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix
+tags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.
+We have completed the initial implementation for the bootstrap instance objective.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1558" target="_blank" rel="noopener noreferrer">#1558</a></li><li>Fix of the committee key size
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1544" target="_blank" rel="noopener noreferrer">#1544</a></li><li>Workaround a ledger issue with unregistered pools
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1542" target="_blank" rel="noopener noreferrer">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1539" target="_blank" rel="noopener noreferrer">#1539</a></li><li>Rename offline to offchain
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1533" target="_blank" rel="noopener noreferrer">#1533</a></li><li>Transfer existing tests to Conway era
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1529" target="_blank" rel="noopener noreferrer">#1529</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1547" target="_blank" rel="noopener noreferrer">#1547</a></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-11-08-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-08-ledger"/>
+        <updated>2023-11-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and
+tooling that we use for testing Ledger. Major Conway bugs that were discovered and
+squashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an
+ordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate
+certificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a
+serious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on
+expired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized "Imp" test library that allows us
+writing concise stateful unit tests for verifying the Ledger logic. Serious progress has
+been made on the conformance testing, where we can now interface with Haskell generated
+code from the Agda specification. Serialization testing has been extended to increase
+binary conformance coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3808" target="_blank" rel="noopener noreferrer">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3801" target="_blank" rel="noopener noreferrer">pull-3801</a> - Fix epoch rule and tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3803" target="_blank" rel="noopener noreferrer">pull-3803</a> - Fix delegation validation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3759" target="_blank" rel="noopener noreferrer">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3779" target="_blank" rel="noopener noreferrer">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3794" target="_blank" rel="noopener noreferrer">pull-3794</a> - Added anchor to resign certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3797" target="_blank" rel="noopener noreferrer">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3848" target="_blank" rel="noopener noreferrer">pull-3848</a> - Plutus modules restructure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3840" target="_blank" rel="noopener noreferrer">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3856" target="_blank" rel="noopener noreferrer">pull-3856</a> - Add governance related ledger events</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3825" target="_blank" rel="noopener noreferrer">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3831" target="_blank" rel="noopener noreferrer">pull-3831</a> - Treasury withdrawal fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3791" target="_blank" rel="noopener noreferrer">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3836" target="_blank" rel="noopener noreferrer">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3846" target="_blank" rel="noopener noreferrer">pull-3846</a> - Revert argument order swap.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3782" target="_blank" rel="noopener noreferrer">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3842" target="_blank" rel="noopener noreferrer">pull-3842</a> - Imp improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3844" target="_blank" rel="noopener noreferrer">pull-3844</a> - Add mappings to Agda types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3853" target="_blank" rel="noopener noreferrer">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3809" target="_blank" rel="noopener noreferrer">pull-3809</a> - CDDL roundtrip testing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3832" target="_blank" rel="noopener noreferrer">pull-3832</a> - Treasury withdrawals tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3839" target="_blank" rel="noopener noreferrer">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3841" target="_blank" rel="noopener noreferrer">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3843" target="_blank" rel="noopener noreferrer">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3795" target="_blank" rel="noopener noreferrer">pull-3795</a> - Bump plutus to 1.15</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3798" target="_blank" rel="noopener noreferrer">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3799" target="_blank" rel="noopener noreferrer">pull-3799</a> - Changes needed for 8.6 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3807" target="_blank" rel="noopener noreferrer">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3819" target="_blank" rel="noopener noreferrer">pull-3819</a> - Fixups needed for a release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3829" target="_blank" rel="noopener noreferrer">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3830" target="_blank" rel="noopener noreferrer">pull-3830</a> - Bump aeson to 2.2</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3833" target="_blank" rel="noopener noreferrer">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3828" target="_blank" rel="noopener noreferrer">pull-3828</a> - Add changelog for node release 8.6</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-11-08-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-08-mithril"/>
+        <updated>2023-11-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the 'release-mainnet' aggregator.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href="https://github.com/input-output-hk/mithril/issues/1322" target="_blank" rel="noopener noreferrer">#1322</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-11-01-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-01-consensus"/>
+        <updated>2023-11-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">survivable eclipse duration</a>, which is part of our work <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/427" target="_blank" rel="noopener noreferrer">supporting Genesis delivery</a>, and how to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">improve the handling of blocks from the future</a>.
+Regarding the UTxO-HD branch, we managed to run a node with <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.
+We also <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122" target="_blank" rel="noopener noreferrer">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-11-01-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-11-01-mithril"/>
+        <updated>2023-11-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the 'devnet' faster and fixed some regressions in the Mithril client CLI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1321" target="_blank" rel="noopener noreferrer">#1321</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-10-27-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-27-hydra"/>
+        <updated>2023-10-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid
+overwriting existing keys, and resolved issues related to the rewritten
+<code>hydra-tui</code>. They also worked on a \"dirt road\" implementation for the
+\"Ignored init tx\" notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including
+implementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check
+out our Masterclass about \"Developing Hydra + Mithril for Scaling Cardano\" on
+Friday, November 3 at 14:00-15:30 local time in the \"Al Dar\" room!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys
+<a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Finalized cardano summit preparation
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">link to
+repository</a></li><li>Dirt road implementation for \"Ignored init tx\" notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-10-27-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-27-network"/>
+        <updated>2023-10-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 47]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-47">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22" target="_blank" rel="noopener noreferrer">sprint 47</a><a class="hash-link" href="#high-level-overview-of-sprint-47" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests">CI / Tests<a class="hash-link" href="#ci--tests" title="Direct link to heading">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>
+function used for testing codecs which triggered out of memory manager (OOM) on
+some platforms (<a href="https://github.com/input-output-hk/typed-protocols/pull/43" target="_blank" rel="noopener noreferrer">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI
+<code>timeouts</code> (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680" target="_blank" rel="noopener noreferrer">connection-manager-fix</a>).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="keepalive-client">KeepAlive client<a class="hash-link" href="#keepalive-client" title="Direct link to heading">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed
+by Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>), <a href="https://github.com/input-output-hk/ouroboros-network/issues/4689" target="_blank" rel="noopener noreferrer">ouroboros-network#4689</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois">Galois<a class="hash-link" href="#galois" title="Direct link to heading">​</a></h3><p>We merged two large PRs prepared by <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4660" target="_blank" rel="noopener noreferrer">inspect <code>error</code> call sites</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4663" target="_blank" rel="noopener noreferrer">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance-cnsa">Cardano Network Service Assurance (CNSA)<a class="hash-link" href="#cardano-network-service-assurance-cnsa" title="Direct link to heading">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new "CSNA analysis" that provides, for each sampler node, the
+block download throughput in bytes over time.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-chap-release">New CHaP Release<a class="hash-link" href="#new-chap-release" title="Direct link to heading">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/547" target="_blank" rel="noopener noreferrer">chap#547</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests-1">CI / Tests<a class="hash-link" href="#ci--tests-1" title="Direct link to heading">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of
+<code>IOSim</code> traces without retaining them, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696" target="_blank" rel="noopener noreferrer">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test
+artefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for
+<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to
+run concurrently, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/4623" target="_blank" rel="noopener noreferrer">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4694" target="_blank" rel="noopener noreferrer">inbound-governor: connection leak</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4607" target="_blank" rel="noopener noreferrer">connection-manager: assertion failure</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4605" target="_blank" rel="noopener noreferrer">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production
+code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release-process">Release Process<a class="hash-link" href="#release-process" title="Direct link to heading">​</a></h3><p>We updated our release process &amp; associated scripts, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4705" target="_blank" rel="noopener noreferrer">ouroboros-network#4705</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-10-27-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-27-sre"/>
+        <updated>2023-10-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href="https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href="https://github.com/input-output-hk/cardano-parts/pull/17" target="_blank" rel="noopener noreferrer">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href="https://github.com/input-output-hk/cardano-playground/pull/4" target="_blank" rel="noopener noreferrer">cardano-playground-pull-4</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-10-25-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-25-mithril"/>
+        <updated>2023-10-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2342.0" target="_blank" rel="noopener noreferrer"><code>2342.0</code></a>. This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1133" target="_blank" rel="noopener noreferrer">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1184" target="_blank" rel="noopener noreferrer">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href="https://github.com/input-output-hk/mithril/issues/1306" target="_blank" rel="noopener noreferrer">#1306</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-10-24-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-24-node-cli-api"/>
+        <updated>2023-10-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-10-11 - 2023-10-24</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/394" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/393" target="_blank" rel="noopener noreferrer">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/390" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/389" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/380" target="_blank" rel="noopener noreferrer">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/379" target="_blank" rel="noopener noreferrer">drep registration-certificate: add a golden test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/378" target="_blank" rel="noopener noreferrer">Disambiguate treasury withdrawal flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/375" target="_blank" rel="noopener noreferrer">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/374" target="_blank" rel="noopener noreferrer">Add <code>conway governance action view</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/372" target="_blank" rel="noopener noreferrer">Ch/clearer anchor flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/371" target="_blank" rel="noopener noreferrer">Command argument types for <code>transaction</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/370" target="_blank" rel="noopener noreferrer">Remove eras' constitution-hash</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/368" target="_blank" rel="noopener noreferrer">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/367" target="_blank" rel="noopener noreferrer">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/366" target="_blank" rel="noopener noreferrer">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/365" target="_blank" rel="noopener noreferrer"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/364" target="_blank" rel="noopener noreferrer">Command argument types for governance key commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/363" target="_blank" rel="noopener noreferrer">Add test of voting using a cc hot key</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/338" target="_blank" rel="noopener noreferrer">Add Show instance for FoldBlocksError</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/336" target="_blank" rel="noopener noreferrer">Upgrade typed-protocols to 1.1.1</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/332" target="_blank" rel="noopener noreferrer">Improved validity range handling</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/330" target="_blank" rel="noopener noreferrer">Delete <code>AlonzoEraOnly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/329" target="_blank" rel="noopener noreferrer">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/327" target="_blank" rel="noopener noreferrer">DRep extended key: add CastVerificationKeyRole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/326" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/325" target="_blank" rel="noopener noreferrer">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/324" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/323" target="_blank" rel="noopener noreferrer">Support Plutus V1 in Conway</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/322" target="_blank" rel="noopener noreferrer">Parameterize GovernanceAction on era </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/320" target="_blank" rel="noopener noreferrer">Support DRep extended keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/317" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/314" target="_blank" rel="noopener noreferrer">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/313" target="_blank" rel="noopener noreferrer">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/312" target="_blank" rel="noopener noreferrer">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5515" target="_blank" rel="noopener noreferrer">Factor out file creation for SPO</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5504" target="_blank" rel="noopener noreferrer">Tracer documentation generation enhacements </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-10-20-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-20-hydra"/>
+        <updated>2023-10-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API's submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.
+This improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.
+This effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href="https://github.com/input-output-hk/hydra/pull/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li><a href="https://github.com/input-output-hk/hydra/issues/1120" target="_blank" rel="noopener noreferrer">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href="https://github.com/input-output-hk/hydra/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href="https://github.com/input-output-hk/hydra/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href="https://github.com/input-output-hk/hydra/pull/1121" target="_blank" rel="noopener noreferrer">#1121</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-10-18-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-18-consensus"/>
+        <updated>2023-10-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330" target="_blank" rel="noopener noreferrer">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href="https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069" target="_blank" rel="noopener noreferrer">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">422</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> finished his cycle as release engineer. Node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">4251</a>).</li><li>We prepared the integration of <a href="https://github.com/input-output-hk/cardano-node/pull/5502" target="_blank" rel="noopener noreferrer">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">issue</a>).</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-10-18-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-18-mithril"/>
+        <updated>2023-10-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href="https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq" target="_blank" rel="noopener noreferrer">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1298" target="_blank" rel="noopener noreferrer">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href="https://github.com/input-output-hk/mithril/issues/1292" target="_blank" rel="noopener noreferrer">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-10-15-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-15-network"/>
+        <updated>2023-10-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 46]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-46">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22" target="_blank" rel="noopener noreferrer">sprint 46</a><a class="hash-link" href="#high-level-overview-of-sprint-46" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We diagnosed the performance regression of the new design. The work on
+<code>typed-protocols</code> will be postponed.  For more details see the
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4691" target="_blank" rel="noopener noreferrer">PR</a> which updates the <code>demo-ping-pong</code> and
+<code>demo-chain-sync</code> applications.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We made progress in review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4644" target="_blank" rel="noopener noreferrer">ouroboros-network#4644</a>, which simplifies the
+peer sharing and fixes the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4642" target="_blank" rel="noopener noreferrer">ouroboros-network#4642</a> issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We reviewed the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a> PR which inspects all the uses of
+<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-10-13-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-13-hydra"/>
+        <updated>2023-10-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team's primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project's structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-10-13-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-13-ledger"/>
+        <updated>2023-10-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to
+testing. For this reason there is a very little amount features that are reported this
+time aorund. Notable Conway related changes are a specialized ledger query for getting
+Constitutional Committee state and prevention of submitting proposal procedures that have
+no valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip
+serialization. As a result of this extra testing a bug in Conway Genesis serialization
+was eliminated.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3768" target="_blank" rel="noopener noreferrer">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3781" target="_blank" rel="noopener noreferrer">pull-3781</a> - CommitteeState query</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-and-releasing">Integration and releasing<a class="hash-link" href="#integration-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3774" target="_blank" rel="noopener noreferrer">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3770" target="_blank" rel="noopener noreferrer">pull-3770</a> - cabal.project: Bump index states</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3778" target="_blank" rel="noopener noreferrer">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3769" target="_blank" rel="noopener noreferrer">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3783" target="_blank" rel="noopener noreferrer">pull-3783</a> - Update TranslationInstance.hs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3775" target="_blank" rel="noopener noreferrer">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3793" target="_blank" rel="noopener noreferrer">pull-3793</a> - Fix sums with negative RHS.</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-10-13-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-13-sre"/>
+        <updated>2023-10-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href="https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href="https://github.com/input-output-hk/cardano-parts/pull/16" target="_blank" rel="noopener noreferrer">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-parts/pull/15" target="_blank" rel="noopener noreferrer">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-playground/pull/3" target="_blank" rel="noopener noreferrer">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href="https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-10-11-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-11-mithril"/>
+        <updated>2023-10-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a>, the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href="https://github.com/input-output-hk/mithril/issues/1282" target="_blank" rel="noopener noreferrer">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-10-10-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-10-node-cli-api"/>
+        <updated>2023-10-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-09-27 - 2023-10-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/347" target="_blank" rel="noopener noreferrer">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/344" target="_blank" rel="noopener noreferrer">Rename create-new-committee into update-committee</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/341" target="_blank" rel="noopener noreferrer">New version cardano-cli-8.12.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/338" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/337" target="_blank" rel="noopener noreferrer">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/330" target="_blank" rel="noopener noreferrer">Drep certification registration: add parameters for anchor</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/329" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/327" target="_blank" rel="noopener noreferrer">Move files that are not golden files into <code>input</code> directory</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/324" target="_blank" rel="noopener noreferrer">Update to cardano-api-8.24</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/323" target="_blank" rel="noopener noreferrer">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/322" target="_blank" rel="noopener noreferrer">create-poll, answer-poll, verify-poll: move to 'babbage governance' block</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/320" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/319" target="_blank" rel="noopener noreferrer">Make <code>transaction view</code> emit JSON</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/318" target="_blank" rel="noopener noreferrer">Tidy up query command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/317" target="_blank" rel="noopener noreferrer">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/316" target="_blank" rel="noopener noreferrer">Add DRep Retirement Certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/310" target="_blank" rel="noopener noreferrer">Update to cardano api 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/309" target="_blank" rel="noopener noreferrer">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/307" target="_blank" rel="noopener noreferrer">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/306" target="_blank" rel="noopener noreferrer">Add certs to txbody of Conway transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/305" target="_blank" rel="noopener noreferrer">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/304" target="_blank" rel="noopener noreferrer">Add BabbageEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/303" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.2.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/300" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/299" target="_blank" rel="noopener noreferrer">Reduce constraint usage with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/297" target="_blank" rel="noopener noreferrer">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/296" target="_blank" rel="noopener noreferrer">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/294" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/293" target="_blank" rel="noopener noreferrer">Require conway onwards for voting</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/292" target="_blank" rel="noopener noreferrer">Add witness committee cold key</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/291" target="_blank" rel="noopener noreferrer">Fix CHaP failure due to haddock issue</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/290" target="_blank" rel="noopener noreferrer">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/289" target="_blank" rel="noopener noreferrer">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/288" target="_blank" rel="noopener noreferrer">Release 8.24.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/287" target="_blank" rel="noopener noreferrer">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/286" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/284" target="_blank" rel="noopener noreferrer">conway drep registration: expose ledger anchor parameter</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/282" target="_blank" rel="noopener noreferrer">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/281" target="_blank" rel="noopener noreferrer">Rename eon functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/280" target="_blank" rel="noopener noreferrer">New <code>AnyEraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/279" target="_blank" rel="noopener noreferrer">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/278" target="_blank" rel="noopener noreferrer">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/277" target="_blank" rel="noopener noreferrer">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/276" target="_blank" rel="noopener noreferrer">Release 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/275" target="_blank" rel="noopener noreferrer">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5497" target="_blank" rel="noopener noreferrer">bump cardano-api to 8.25.2</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5491" target="_blank" rel="noopener noreferrer">Remove unused code in cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-10-06-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-06-hydra"/>
+        <updated>2023-10-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Release <a href="https://github.com/input-output-hk/hydra/releases/tag/0.13.0" target="_blank" rel="noopener noreferrer">0.13.0</a></li><li>Published vulnerability reports <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Merged network resilience work part I <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href="https://github.com/input-output-hk/hydra/pull/1095" target="_blank" rel="noopener noreferrer">#1095</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete Aiken commit validator script <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete Kupo integration <a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Brick upgrade on TUI <a href="https://github.com/input-output-hk/hydra/pull/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-10-06-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-06-performance-and-tracing"/>
+        <updated>2023-10-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We've developed strategies for future benchmarks of PlutusV3 and UTxO-HD's on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the
+performance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results
+show all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The
+feedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Benchmarking UTxO-HD's on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,
+we'd like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service
+receiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is
+more performance critical, the receiving service must still minimize its resource footprint. Moreover, it can
+generate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster's topology. We repeated
+the same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-10-04-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-04-consensus"/>
+        <updated>2023-10-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.
+We also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/392" target="_blank" rel="noopener noreferrer">392</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/366" target="_blank" rel="noopener noreferrer">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/384" target="_blank" rel="noopener noreferrer">384</a>).</li><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/369" target="_blank" rel="noopener noreferrer">369</a>).</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-10-04-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-04-mithril"/>
+        <updated>2023-10-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1185" target="_blank" rel="noopener noreferrer">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href="https://github.com/input-output-hk/mithril/issues/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href="https://github.com/input-output-hk/mithril/issues/1265" target="_blank" rel="noopener noreferrer">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href="https://github.com/input-output-hk/mithril/issues/1277" target="_blank" rel="noopener noreferrer">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1274" target="_blank" rel="noopener noreferrer">#1274</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-10-02-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-10-02-network"/>
+        <updated>2023-10-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 45]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-45">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22" target="_blank" rel="noopener noreferrer">sprint 45</a><a class="hash-link" href="#high-level-overview-of-sprint-45" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we
+started investigating where it comes from.  Currently, we see that
+<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running
+in isolation with a simple <code>ping-pong</code> protocol, so the regression might be in
+the new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>
+See <a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosimpor">IOSimPOR<a class="hash-link" href="#iosimpor" title="Direct link to heading">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We'd like to thank Prof. John Hughes
+(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the
+debugging similar problems in the future easier.</p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Technical Details on IOSim refactoring</summary><div><div class="collapsibleContent_i85q">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we'd need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim">IOSim<a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of
+the public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is
+a work in progress, <a href="https://github.com/input-output-hk/io-sim/issues/114" target="_blank" rel="noopener noreferrer">io-sim#114</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-newtork-service-assurance">Cardano Newtork Service Assurance<a class="hash-link" href="#cardano-newtork-service-assurance" title="Direct link to heading">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation
+was updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were
+made.</li><li>Galois has started the design for adding a CNSA analysis for "fetched bytes
+over time while node is syncing".</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, we've seen increase in P2P adoption.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png" width="2668" height="1576" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png" width="2674" height="1580" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the
+PR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4676" target="_blank" rel="noopener noreferrer">ouroboros-network#4676</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-09-29-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-29-goedel"/>
+        <updated>2023-09-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and testing the
+performance analysis tool</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of
+programs with local environments via synchronous channels</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-09-29-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-29-hydra"/>
+        <updated>2023-09-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability
+network layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on
+how to handle security vulnerability within Hydra, and in particular how to
+handle so-called "Silent fixes".</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Adr/network reliability <a href="https://github.com/input-output-hk/hydra/pull/1082" target="_blank" rel="noopener noreferrer">#1082</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-09-29-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-29-ledger"/>
+        <updated>2023-09-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been
+fully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep's expiry is prevented by delaying the expiry for all DReps whenever there are no
+proposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to
+allow for individual Plutus language version updates, rather than requiring a complete
+replacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some
+optimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for
+ledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul
+of functionality for initial funds and staking injection whenever node starts up in
+Conway, while bypassing all previous eras.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3729" target="_blank" rel="noopener noreferrer">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3739" target="_blank" rel="noopener noreferrer">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3743" target="_blank" rel="noopener noreferrer">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3746" target="_blank" rel="noopener noreferrer">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3737" target="_blank" rel="noopener noreferrer">pull-3737</a> - Implement EraTransition</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3749" target="_blank" rel="noopener noreferrer">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3748" target="_blank" rel="noopener noreferrer">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3745" target="_blank" rel="noopener noreferrer">pull-3745</a> - Constitutional Committee Ratification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3763" target="_blank" rel="noopener noreferrer">pull-3763</a> - Plutus interface improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3771" target="_blank" rel="noopener noreferrer">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3766" target="_blank" rel="noopener noreferrer">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3765" target="_blank" rel="noopener noreferrer">pull-3765</a> - Improve native script handling</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3747" target="_blank" rel="noopener noreferrer">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3758" target="_blank" rel="noopener noreferrer">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3754" target="_blank" rel="noopener noreferrer">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="releasing">Releasing<a class="hash-link" href="#releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3742" target="_blank" rel="noopener noreferrer">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3744" target="_blank" rel="noopener noreferrer">pull-3744</a> - Changelog 8.4</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3752" target="_blank" rel="noopener noreferrer">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3753" target="_blank" rel="noopener noreferrer">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3760" target="_blank" rel="noopener noreferrer">pull-3760</a> - Fixup issues for release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3764" target="_blank" rel="noopener noreferrer">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3734" target="_blank" rel="noopener noreferrer">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3735" target="_blank" rel="noopener noreferrer">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3728" target="_blank" rel="noopener noreferrer">pull-3728</a> - STS tests based on constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3714" target="_blank" rel="noopener noreferrer">pull-3714</a> - Implement the remaining upgradable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3733" target="_blank" rel="noopener noreferrer">pull-3733</a> - Add some unit tests for Conway features</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3762" target="_blank" rel="noopener noreferrer">pull-3762</a> - Update CDDL for praos headers.</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-09-29-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-29-sre"/>
+        <updated>2023-09-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">8.4.0-pre</a>.</li><li>The use of cardano-node <a href="https://hub.docker.com/r/inputoutput/cardano-node" target="_blank" rel="noopener noreferrer">docker hub</a> will be deprecated in preference of <a href="https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node" target="_blank" rel="noopener noreferrer">GHCR</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href="https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href="https://github.com/input-output-hk/cardano-parts/pull/14" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/2" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href="https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href="https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-09-27-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-27-mithril"/>
+        <updated>2023-09-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2337.0" target="_blank" rel="noopener noreferrer"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href="https://mithril.network/doc/adr/6" target="_blank" rel="noopener noreferrer">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1207" target="_blank" rel="noopener noreferrer">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-09-26-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-26-node-cli-api"/>
+        <updated>2023-09-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-09-13 - 2023-09-26</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/302" target="_blank" rel="noopener noreferrer">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/298" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/295" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/292" target="_blank" rel="noopener noreferrer">cardano-cli: add governance create-info command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/287" target="_blank" rel="noopener noreferrer">Release 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/286" target="_blank" rel="noopener noreferrer">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/284" target="_blank" rel="noopener noreferrer">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/283" target="_blank" rel="noopener noreferrer">Update cardano-api to 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/282" target="_blank" rel="noopener noreferrer">Remove unused governance-related code</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/281" target="_blank" rel="noopener noreferrer">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/280" target="_blank" rel="noopener noreferrer">Remove redundant conversions in JSON friendly instances </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/279" target="_blank" rel="noopener noreferrer">Regularise era based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/277" target="_blank" rel="noopener noreferrer">Simplify era handling</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/276" target="_blank" rel="noopener noreferrer">Remove <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/275" target="_blank" rel="noopener noreferrer">Era-based <code>stake-pool</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/274" target="_blank" rel="noopener noreferrer">Fix git revision in <code>version</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/273" target="_blank" rel="noopener noreferrer">cardano-cli-8.8.0.0</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/265" target="_blank" rel="noopener noreferrer">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/264" target="_blank" rel="noopener noreferrer">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/262" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/256" target="_blank" rel="noopener noreferrer">Delete unused eon constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/255" target="_blank" rel="noopener noreferrer">Export ByronEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/254" target="_blank" rel="noopener noreferrer">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/250" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/249" target="_blank" rel="noopener noreferrer">Add JSON instance for Hash GenesisKey </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/248" target="_blank" rel="noopener noreferrer">Support more ledger constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/247" target="_blank" rel="noopener noreferrer">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/246" target="_blank" rel="noopener noreferrer">Release 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/245" target="_blank" rel="noopener noreferrer">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/244" target="_blank" rel="noopener noreferrer">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/243" target="_blank" rel="noopener noreferrer">Fix typos in some deserialization error messages</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/240" target="_blank" rel="noopener noreferrer">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5480" target="_blank" rel="noopener noreferrer">Trace Configuration Trace Message Enhancement</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5466" target="_blank" rel="noopener noreferrer">cardano-node: reduce orphan instances</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5471" target="_blank" rel="noopener noreferrer">Update to cardano-cli 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-09-22-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-22-hydra"/>
+        <updated>2023-09-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in
+collaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability
+and identified concrete steps to enhance network resiliency in feature
+items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a>, and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a>.
+Additionally, they contributed the aiken-mode editor integration to the
+aiken-lang organization, updated dependencies to utilize cardano-api
+8.20, and published the Hydra security advisory CVE-2023-42806 with a
+workaround available for users.</p><p>These efforts demonstrate the team\'s commitment to project improvement,
+security, and open-source community collaboration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command
+<a href="https://github.com/input-output-hk/hydra/pull/1077" target="_blank" rel="noopener noreferrer">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested
+feature items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a></li><li>Moved <a href="https://github.com/aiken-lang/aiken-mode" target="_blank" rel="noopener noreferrer">aiken-mode</a> (created by SN)
+to aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20
+<a href="https://github.com/input-output-hk/hydra/pull/1075" target="_blank" rel="noopener noreferrer">#1075</a></li><li>Published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(workaround available)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish "network resilience to disconnects"
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Finish kupo integration with hydra
+<a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-09-22-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-22-performance-and-tracing"/>
+        <updated>2023-09-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We've been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We're currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we've been equipping both that and the existing benchmarking
+backend with means to measure and document network latency for each run. Furthermore we've implemented means to
+capture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences
+in the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we're running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We've concluded that baseline profile runs aren't directly comparable between the two, so we decided
+to compare standard deviations instead to validate the measurements from nomad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline
+have been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we've looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document
+which runtime configuration the node arrived eventually. We're working on providing a machine-readable JSON/YAML
+trace message for that purpose.  </p><p>This will facilitate hot-reloading a node's tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it
+produces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an
+impact on our measurements, as we'd be basically using two different instruments to take them.  </p><p>Along the way we've already been successful in eliminating some possible confounders that had been introduced by the nomad service
+or the slightly different system architecture of the new cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-team-member">New team member<a class="hash-link" href="#new-team-member" title="Direct link to heading">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he's an excellent fit for our existing team.
+So I'm very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-09-20-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-20-consensus"/>
+        <updated>2023-09-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.
+We are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.
+On the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.
+We also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/349" target="_blank" rel="noopener noreferrer">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node's baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.
+We are now drafting the final self-contained argument. (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4157" target="_blank" rel="noopener noreferrer">4157</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/339" target="_blank" rel="noopener noreferrer">339</a>).
+A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/340" target="_blank" rel="noopener noreferrer">340</a>, <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/354" target="_blank" rel="noopener noreferrer">354</a>, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/355" target="_blank" rel="noopener noreferrer">355</a>)
+However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/345" target="_blank" rel="noopener noreferrer">345</a> and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/346" target="_blank" rel="noopener noreferrer">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-09-20-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-20-mithril"/>
+        <updated>2023-09-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href="https://github.com/input-output-hk/mithril/issues/1200" target="_blank" rel="noopener noreferrer">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1238" target="_blank" rel="noopener noreferrer">#1238</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-09-15-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-15-goedel"/>
+        <updated>2023-09-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-09-15-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-15-hydra"/>
+        <updated>2023-09-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in
+Nantes, France. They used this oportunity to meet fellow mithril team and spend
+some time together to hack on some code and, as always, reflect on the past work
+and find optimal path forward for both projects. They also fixed a bug that
+caused hydra-node to crash when querying L1, worked on a new network resillience
+proof-of-concept and accepted a new ADR related to stateless transaction
+observation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href="https://github.com/input-output-hk/hydra/pull/1048" target="_blank" rel="noopener noreferrer">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href="https://github.com/input-output-hk/hydra/pull/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Collected experimental CI findings <a href="https://github.com/input-output-hk/hydra/pull/1070" target="_blank" rel="noopener noreferrer">#1070</a></li><li>Propose first POC for the network resilience <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete hydra-support in kupo <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">kupo#117</a></li></ul>]]></content>
+        <author>
+            <name>Sasha Bogicevic</name>
+            <uri>https://github.com/v0d1ch</uri>
+        </author>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-09-15-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-15-ledger"/>
+        <updated>2023-09-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team's focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial
+version of Constitution. Priority in which Governance Action are now enacted matches the
+specification. DRep's deposits are now properly accounted for. Governance actions that are
+not allowed to be voted on by Stake Pool operators and Constitutional Committee members
+are prevented by transaction submission failure, rather than simply being ignored. There
+was a few important CDDL fixes as well as a lot of new round trip serialization
+tests. Constraint based testing framework has also received a lot of improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3681" target="_blank" rel="noopener noreferrer">pull-3681</a> - Conway Genesis additions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3690" target="_blank" rel="noopener noreferrer">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3705" target="_blank" rel="noopener noreferrer">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3700" target="_blank" rel="noopener noreferrer">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3704" target="_blank" rel="noopener noreferrer">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3698" target="_blank" rel="noopener noreferrer">pull-3698</a> - Reordering of governance actions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3712" target="_blank" rel="noopener noreferrer">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3716" target="_blank" rel="noopener noreferrer">pull-3716</a> - Abstract threshold calculation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3725" target="_blank" rel="noopener noreferrer">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3718" target="_blank" rel="noopener noreferrer">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3721" target="_blank" rel="noopener noreferrer">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3629" target="_blank" rel="noopener noreferrer">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3680" target="_blank" rel="noopener noreferrer">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3708" target="_blank" rel="noopener noreferrer">pull-3708</a> - Post release changes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3730" target="_blank" rel="noopener noreferrer">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3697" target="_blank" rel="noopener noreferrer">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3709" target="_blank" rel="noopener noreferrer">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3726" target="_blank" rel="noopener noreferrer">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3713" target="_blank" rel="noopener noreferrer">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-09-15-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-15-network"/>
+        <updated>2023-09-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 44]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-44">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22" target="_blank" rel="noopener noreferrer">sprint 44</a><a class="hash-link" href="#high-level-overview-of-sprint-44" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we
+identified a possible improvement to bootstrap peers. A more detailed
+description is available <a href="https://github.com/input-output-hk/ouroboros-network/issues/4675" target="_blank" rel="noopener noreferrer">here</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-840-release">Cardano-Node-8.4.0 Release<a class="hash-link" href="#cardano-node-840-release" title="Direct link to heading">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final
+integration <a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">PR</a> is currently being merged. We published
+new versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with
+<code>cardano-node</code>.  This is towards our goal which we planned for the next
+quarter.  The identified tasks are to fix breaking tests, and then measure and
+address possible performance regressions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4663" target="_blank" rel="noopener noreferrer">ouroboros-network-#4663</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4664" target="_blank" rel="noopener noreferrer">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4660" target="_blank" rel="noopener noreferrer">ouroboros-network-#4660</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning
+the number of SPOs or stakes, although the number of overall P2P relays has
+increased.  Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>) is investigating
+this issue.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png" width="2014" height="1586" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png" width="2016" height="1576" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a> and their mainnet
+monitoring infrastructure.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-09-15-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-15-sre"/>
+        <updated>2023-09-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href="https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108" target="_blank" rel="noopener noreferrer">here</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href="https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href="https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710" target="_blank" rel="noopener noreferrer">cardano-ops-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href="https://github.com/input-output-hk/cardano-parts/pull/10" target="_blank" rel="noopener noreferrer">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href="https://github.com/input-output-hk/cardano-parts/pull/11" target="_blank" rel="noopener noreferrer">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href="https://github.com/input-output-hk/cardano-parts/pull/12" target="_blank" rel="noopener noreferrer">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href="https://github.com/input-output-hk/cardano-parts/pull/13" target="_blank" rel="noopener noreferrer">cardano-parts-pull-13</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href="https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/1" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href="https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href="https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-09-14-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-14-db-sync"/>
+        <updated>2023-09-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also
+the team has ran a number of benchmarks and tests for the new options/flavours of DBSync
+and prepared a blogpost which summorises them, for downstream components.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1498" target="_blank" rel="noopener noreferrer">#1498</a></li><li>Simplifications of new feautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1496" target="_blank" rel="noopener noreferrer">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds
+tests for them
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>CI fixes
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1494" target="_blank" rel="noopener noreferrer">#1494</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1491" target="_blank" rel="noopener noreferrer">#1491</a></li><li>Prepared a blogpost about different DBSync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf" target="_blank" rel="noopener noreferrer">blog</a></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-09-12-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-12-node-cli-api"/>
+        <updated>2023-09-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-08-30 - 2023-09-12</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Release of <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.
+This release completes <a href="https://sancho.network/get-started#sanchonet-feature-rollout" target="_blank" rel="noopener noreferrer">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming
+<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top
+of that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.
+Removing <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/261" target="_blank" rel="noopener noreferrer">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/257" target="_blank" rel="noopener noreferrer">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/260" target="_blank" rel="noopener noreferrer">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/256" target="_blank" rel="noopener noreferrer">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/254" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/250" target="_blank" rel="noopener noreferrer">#221 Update description fields on delegation certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/249" target="_blank" rel="noopener noreferrer">Update error message for eras mismatch between node and cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/248" target="_blank" rel="noopener noreferrer">Era based <code>address</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/246" target="_blank" rel="noopener noreferrer">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/245" target="_blank" rel="noopener noreferrer">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/244" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/243" target="_blank" rel="noopener noreferrer">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/242" target="_blank" rel="noopener noreferrer">Move <code>node</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/241" target="_blank" rel="noopener noreferrer">Era-based <code>stake-address</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/240" target="_blank" rel="noopener noreferrer">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/239" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from errors</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/238" target="_blank" rel="noopener noreferrer">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/237" target="_blank" rel="noopener noreferrer">Move <code>key</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/236" target="_blank" rel="noopener noreferrer">Move <code>query</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/235" target="_blank" rel="noopener noreferrer">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/234" target="_blank" rel="noopener noreferrer">Move <code>pool</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/233" target="_blank" rel="noopener noreferrer">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/232" target="_blank" rel="noopener noreferrer">Move <code>address</code> run command implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/231" target="_blank" rel="noopener noreferrer">Delete legacy <code>conway governance</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/230" target="_blank" rel="noopener noreferrer">Era sensitive transaction run commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/229" target="_blank" rel="noopener noreferrer">Move transaction command code into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/228" target="_blank" rel="noopener noreferrer">Fix query <code>key-period-info</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/227" target="_blank" rel="noopener noreferrer">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/225" target="_blank" rel="noopener noreferrer">Prefix complex delegation certificate option</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/233" target="_blank" rel="noopener noreferrer">Fix test constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/231" target="_blank" rel="noopener noreferrer">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/230" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/228" target="_blank" rel="noopener noreferrer">Release 8.19.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/226" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/225" target="_blank" rel="noopener noreferrer">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/224" target="_blank" rel="noopener noreferrer">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/222" target="_blank" rel="noopener noreferrer">Release 8.18.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/221" target="_blank" rel="noopener noreferrer">Fix exception when executing drep queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5460" target="_blank" rel="noopener noreferrer">Fix deadlock issue with stdout tracer in tx-generator</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5453" target="_blank" rel="noopener noreferrer">nix: workbench tracing configuration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-09-08-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-08-hydra"/>
+        <updated>2023-09-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline
+datums. They simplified the chain layer by refactoring how the chain state is
+persisted. Updates to the Hydra tutorial were completed, including CI workflows
+to keep it up-to-date. The team engaged in discussions with researchers about
+incremental commits &amp; decommits, and drafted an architectural decision record
+for a resource-based API. They also explored simpler solutions for the upcoming
+network resilience feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Support InlineScriptDatum in commit
+<a href="https://github.com/input-output-hk/hydra/issues/1043" target="_blank" rel="noopener noreferrer">#1043</a></li><li>Refactored chain state persistency
+<a href="https://github.com/input-output-hk/hydra/pull/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)
+<a href="https://github.com/input-output-hk/hydra/issues/997" target="_blank" rel="noopener noreferrer">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \"Network
+resilience problem\" to find a KISS solution for
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Drafted and discussed incremental de-/commit features within team
+and with researchers
+<a href="https://github.com/input-output-hk/hydra/issues/199" target="_blank" rel="noopener noreferrer">#199</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Created ADR for a resource based overhaul of the API
+<a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already
+understood)</li><li>An ADR for improving tx construction &amp; observation to not need chain
+state</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-09-07-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-07-mithril"/>
+        <updated>2023-09-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2335.0" target="_blank" rel="noopener noreferrer"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href="https://github.com/input-output-hk/mithril/issues/1155" target="_blank" rel="noopener noreferrer">#1155</a></li><li>Completed the issue <code>Provide progress information with '--json' option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/948" target="_blank" rel="noopener noreferrer">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href="https://github.com/input-output-hk/mithril/issues/947" target="_blank" rel="noopener noreferrer">#947</a></li><li>Completed the issue <code>Post deployment 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href="https://github.com/input-output-hk/mithril/issues/1160" target="_blank" rel="noopener noreferrer">#1160</a></li><li>Completed the issue <code>Update 'ed25519-dalek' to '2.0.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/1188" target="_blank" rel="noopener noreferrer">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href="https://github.com/input-output-hk/mithril/issues/1151" target="_blank" rel="noopener noreferrer">#1151</a></li><li>Completed the issue <code>Fix end to end 'wait_for_the_expected_time' test</code> <a href="https://github.com/input-output-hk/mithril/issues/1191" target="_blank" rel="noopener noreferrer">#1191</a></li><li>Completed the issue <code>Fix docs 'git checkout' command</code> <a href="https://github.com/input-output-hk/mithril/issues/1174" target="_blank" rel="noopener noreferrer">#1174</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-09-07-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-07-performance-and-tracing"/>
+        <updated>2023-09-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We're productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node's traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation
+operation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point
+in time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.
+This feature enables feedback on when tracer implementation details in some component might have changed. It's also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we've created a fine-grained configuration of the new system that caters to benchmarking's need of very many
+detailed trace messages. It's aimed at mirroring the same amount of trace messages, and information, we're seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we're using it in production mode to comparatively benchmark both tracing systems after merging past month's optimizations - which is the
+first real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-09-06-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-06-consensus"/>
+        <updated>2023-09-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.
+On the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.
+The Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203" target="_blank" rel="noopener noreferrer">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418" target="_blank" rel="noopener noreferrer">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3099" target="_blank" rel="noopener noreferrer">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/323" target="_blank" rel="noopener noreferrer">#323</a>).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3491" target="_blank" rel="noopener noreferrer">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/91" target="_blank" rel="noopener noreferrer">#91</a>.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-09-01-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-01-goedel"/>
+        <updated>2023-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the
+formal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-09-01-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-01-hydra"/>
+        <updated>2023-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network
+layer and have the first draft document related to needed design. They also
+improved the user experience by allowing a commit using inline datums.
+Discussed the off-chain governance with researchers and improved internal model
+tests. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a clear understanding of the changes we need for the "Improve network resiliency" feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul>]]></content>
+        <author>
+            <name>Sasha Bogicevic</name>
+            <uri>https://github.com/v0d1ch</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-09-01-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-01-ledger"/>
+        <updated>2023-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3659" target="_blank" rel="noopener noreferrer">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3637" target="_blank" rel="noopener noreferrer">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3651" target="_blank" rel="noopener noreferrer">pull-3651</a> - Inactive DReps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3664" target="_blank" rel="noopener noreferrer">pull-3664</a> - Track proposal expiry</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3668" target="_blank" rel="noopener noreferrer">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3669" target="_blank" rel="noopener noreferrer">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3676" target="_blank" rel="noopener noreferrer">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3635" target="_blank" rel="noopener noreferrer">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3670" target="_blank" rel="noopener noreferrer">pull-3670</a> - Validate previously enacted govAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3694" target="_blank" rel="noopener noreferrer">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3674" target="_blank" rel="noopener noreferrer">pull-3674</a> - Added RATIFY thresholds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3684" target="_blank" rel="noopener noreferrer">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3688" target="_blank" rel="noopener noreferrer">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3677" target="_blank" rel="noopener noreferrer">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3686" target="_blank" rel="noopener noreferrer">pull-3686</a> - Post patch release fixup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3695" target="_blank" rel="noopener noreferrer">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3683" target="_blank" rel="noopener noreferrer">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3662" target="_blank" rel="noopener noreferrer">pull-3662</a> - Equality on raw types</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-09-01-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-01-network"/>
+        <updated>2023-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 43]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-43">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22" target="_blank" rel="noopener noreferrer">sprint 43</a><a class="hash-link" href="#high-level-overview-of-sprint-43" title="Direct link to heading">​</a></h2><p>In this sprint, we received contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> &amp; <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>.  Karl Knutsson
+(<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts
+and our <code>WireShark</code> dissector.  While the <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> developers focused on
+addressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to
+be run natively on all platforms (these tests mostly contain tests that
+require <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We
+run <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,
+<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.
+The <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on
+GitHub Actions runners. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4653" target="_blank" rel="noopener noreferrer">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>
+version.  So far he integrated <code>cardano-ledger-conway-1.8</code> and
+<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and
+<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,
+<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released
+to <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered
+by Karl from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>). More details are included below.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-p2p-addoption">Progress on P2P addoption<a class="hash-link" href="#progress-on-p2p-addoption" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="spo-relays">SPO relays<a class="hash-link" href="#spo-relays" title="Direct link to heading">​</a></h4><p>There are currently ~2000 relays running P2P
+enabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On
+16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil
+Ada.</p><p><img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png" width="2034" height="1588" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png" width="2038" height="1594" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> and their mainnet monitoring
+infrastructure.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iog-relays">IOG relays<a class="hash-link" href="#iog-relays" title="Direct link to heading">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all
+IOG relays will be running P2P.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>In this sprint, we got a few contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>
+miniprotocols.  These timeouts help a node remove idle connections from the
+responder (server) side <a href="https://github.com/input-output-hk/ouroboros-network/pull/4648" target="_blank" rel="noopener noreferrer">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>.</li></ul><p><a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been working on refactoring the main entry function of P2P <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4652" target="_blank" rel="noopener noreferrer">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It's supposed to relay the
+remote value, but instead, it returns the local value. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4642" target="_blank" rel="noopener noreferrer">ouroboros-network-#4642</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="async-demotion-test-fix">Async Demotion Test Fix<a class="hash-link" href="#async-demotion-test-fix" title="Direct link to heading">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of
+the test itself rather than a bug in the connection manager. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4655" target="_blank" rel="noopener noreferrer">ouroboros-network-#4655</a></li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-09-01-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-09-01-sre"/>
+        <updated>2023-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a> repository started -- "Content Addressed Packages"<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don't have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Content addressed packages -- new repo: <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Flake devShell module improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/4" target="_blank" rel="noopener noreferrer">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/5" target="_blank" rel="noopener noreferrer">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/6" target="_blank" rel="noopener noreferrer">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href="https://github.com/input-output-hk/cardano-parts/pull/7" target="_blank" rel="noopener noreferrer">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href="https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module" target="_blank" rel="noopener noreferrer">cardano-parts-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href="https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href="https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Sanchonet demonstration repository: <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-08-29-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-29-node-cli-api"/>
+        <updated>2023-08-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-08-16 - 2023-08-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger's PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">- GetGovState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepStakeDistr</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetCommitteeState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetConstitution</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/179" target="_blank" rel="noopener noreferrer">Add goverance info action creation to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/176" target="_blank" rel="noopener noreferrer">Add create-no-confidence command to era based cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/175" target="_blank" rel="noopener noreferrer">Add create-new-committee command to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/204" target="_blank" rel="noopener noreferrer">Enable <code>--drep-script-hash</code> option</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/211" target="_blank" rel="noopener noreferrer">Remove <code>experimental</code> subcommand</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/210" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/194" target="_blank" rel="noopener noreferrer">New <code>governance drep id</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/189" target="_blank" rel="noopener noreferrer">Add <code>governance query</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/187" target="_blank" rel="noopener noreferrer">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/203" target="_blank" rel="noopener noreferrer">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/201" target="_blank" rel="noopener noreferrer">Release 8.6.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/195" target="_blank" rel="noopener noreferrer">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/193" target="_blank" rel="noopener noreferrer">Add test for conway governance action create-constitution</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/192" target="_blank" rel="noopener noreferrer">Move legacy errors out of legacy command structure modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/191" target="_blank" rel="noopener noreferrer">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/188" target="_blank" rel="noopener noreferrer">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/186" target="_blank" rel="noopener noreferrer">Move some error types</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/185" target="_blank" rel="noopener noreferrer">Delete unused module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/183" target="_blank" rel="noopener noreferrer">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/182" target="_blank" rel="noopener noreferrer">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/180" target="_blank" rel="noopener noreferrer">Remove example era-based parsers we don't need anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/174" target="_blank" rel="noopener noreferrer">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/216" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/214" target="_blank" rel="noopener noreferrer">Replace ProtocolParameters usage with ledger's PParams</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/210" target="_blank" rel="noopener noreferrer">Use injective type families to improve type inference</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/209" target="_blank" rel="noopener noreferrer">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/208" target="_blank" rel="noopener noreferrer">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/207" target="_blank" rel="noopener noreferrer">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/206" target="_blank" rel="noopener noreferrer">Expose ledger lenses for governance types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/205" target="_blank" rel="noopener noreferrer">New version cardano-api-8.16.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/204" target="_blank" rel="noopener noreferrer">Add <code>VotingProcedures</code> type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/202" target="_blank" rel="noopener noreferrer">Release 8.16.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/200" target="_blank" rel="noopener noreferrer">Update createAnchor to use hashAnchorData</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/197" target="_blank" rel="noopener noreferrer">Release 8.15.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/196" target="_blank" rel="noopener noreferrer">Add consensus governance queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-08-28-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-28-mithril"/>
+        <updated>2023-08-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1106" target="_blank" rel="noopener noreferrer">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href="https://github.com/input-output-hk/mithril/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Completed the issue <code>Use the '/signers/registered' route to verify if a signer is registered</code> <a href="https://github.com/input-output-hk/mithril/issues/1152" target="_blank" rel="noopener noreferrer">#1152</a></li><li>Worked on the issue <code>Provide progress information with '--json' option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Worked on the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-08-25-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-25-hydra"/>
+        <updated>2023-08-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which
+continously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at
+RareEvo workshop as an educational initiative for the community.
+Additionally, the team updated the Hydra demo and tutorial to include Mithril
+and latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve
+<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a
+bad user experience.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>New ADR for “Resourced based API” <a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a poc on network resilience working <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/931" target="_blank" rel="noopener noreferrer">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a>: "Close transaction dropped from cardano-node"</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-08-24-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-24-performance-and-tracing"/>
+        <updated>2023-08-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we're developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We're performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we're working on respective integrations on both those paths.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held
+in memory, which wouldn't fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell's native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We're splitting out everything that's verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We're able to perform full runs on the new hardware cluster
+and porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-08-23-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-23-consensus"/>
+        <updated>2023-08-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.
+On the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/314" target="_blank" rel="noopener noreferrer">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/305" target="_blank" rel="noopener noreferrer">#305</a>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href="https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href="https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/275" target="_blank" rel="noopener noreferrer">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/284" target="_blank" rel="noopener noreferrer">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/283" target="_blank" rel="noopener noreferrer">#283</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/301" target="_blank" rel="noopener noreferrer">#301</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/304" target="_blank" rel="noopener noreferrer">#304</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/308" target="_blank" rel="noopener noreferrer">#308</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-08-18-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-18-goedel"/>
+        <updated>2023-08-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of
+programs to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)
+mini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part
+of 4th year masters course on distributed systemsby colleagues at UC
+Louvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part
+of a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and
+wrote property tests for its algebraic laws</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-08-18-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-18-hydra"/>
+        <updated>2023-08-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that
+brings support for cardano-node 8.1.2, along with performance enhancements and
+various API improvements. Additionally, the team successfully onboarded a new
+contributor who is now actively participating in operating a Hydra Head. They
+took part in a meeting of the Intersect open source committee and prepared the
+Hydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href="https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true" target="_blank" rel="noopener noreferrer">using this
+form</a>.
+We hope to make it possible to follow along on-line as well and will announce
+details on the Hydra announcements channel on the <a href="https://discord.gg/Qq5vNTg9PT" target="_blank" rel="noopener noreferrer">IOG discord
+server</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance
+and several API improvements. <a href="https://github.com/input-output-hk/hydra/releases/tag/0.12.0" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-08-18-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-18-ledger"/>
+        <updated>2023-08-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting
+for DRep and Stake Pool Operators is now at the state that can be used by downstream
+components. Addition of new ledger state queries makes it possible to verify changes to
+the governance state, such as placement of votes, submission of governance proposals,
+inspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the
+ability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3577" target="_blank" rel="noopener noreferrer">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3609" target="_blank" rel="noopener noreferrer">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3604" target="_blank" rel="noopener noreferrer">pull-3604</a> - README: update CIP-1694 link</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3616" target="_blank" rel="noopener noreferrer">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3599" target="_blank" rel="noopener noreferrer">pull-3599</a> - Add governance action well-formedness check</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3607" target="_blank" rel="noopener noreferrer">pull-3607</a> - Rename governance to gov</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3601" target="_blank" rel="noopener noreferrer">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3615" target="_blank" rel="noopener noreferrer">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3596" target="_blank" rel="noopener noreferrer">pull-3596</a> - Upgradeable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3625" target="_blank" rel="noopener noreferrer">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3592" target="_blank" rel="noopener noreferrer">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a> - Treasury donations</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3633" target="_blank" rel="noopener noreferrer">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3634" target="_blank" rel="noopener noreferrer">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3630" target="_blank" rel="noopener noreferrer">pull-3630</a> - Implemented DRep refreshing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3640" target="_blank" rel="noopener noreferrer">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3636" target="_blank" rel="noopener noreferrer">pull-3636</a> - Implement DRep ratification with an "always passing"; threshold</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3648" target="_blank" rel="noopener noreferrer">pull-3648</a> - Governance queries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3650" target="_blank" rel="noopener noreferrer">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3658" target="_blank" rel="noopener noreferrer">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3628" target="_blank" rel="noopener noreferrer">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3619" target="_blank" rel="noopener noreferrer">pull-3619</a> - Disabled a broken test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3660" target="_blank" rel="noopener noreferrer">pull-3660</a> - Fix bounds and versions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3661" target="_blank" rel="noopener noreferrer">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-08-18-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-18-network"/>
+        <updated>2023-08-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 42]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-42">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22" target="_blank" rel="noopener noreferrer">sprint 42</a><a class="hash-link" href="#high-level-overview-of-sprint-42" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version
+<code>0.9.0.0</code>) which includes <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">big ledger peers feature</a>.
+This is the primary peer selection mechanism to defend against eclipses.   We
+also prepared a PR to updated <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/165" target="_blank" rel="noopener noreferrer"><code>ouroboros-cosnensus</code></a>
+and <a href="https://github.com/input-output-hk/ekg-forward/pull/30" target="_blank" rel="noopener noreferrer"><code>ekg-forward</code></a> packages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cddl-specs-for-protocol-codecs">CDDL specs for protocol codecs<a class="hash-link" href="#cddl-specs-for-protocol-codecs" title="Direct link to heading">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation
+which is highly polymorphic.  <code>cddl</code> doesn't have the notion of polymorphism,
+but has <code>any</code> which can generate any valid cbor term.  We matched it with an
+<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.
+This simplified the specifications and made it easier to understand which parts
+are defined in the spec, and which parts are left unspecified.  See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4595" target="_blank" rel="noopener noreferrer">ouroboros-network#4595</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network-framework-api-changes">Ouroboros-Network-Framework API changes<a class="hash-link" href="#ouroboros-network-framework-api-changes" title="Direct link to heading">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.
+The <code>ouroboros-network-framework</code> package contains a redesign of API exposed to
+<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to
+extend in the future if there will be new arguments that need to be passed to
+mini-protocol initiator and responders which comes from the low-level network
+layer.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nix-setup-ci">Nix setup (CI)<a class="hash-link" href="#nix-setup-ci" title="Direct link to heading">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team
+we ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,
+<code>hls</code>, <code>cddl</code>, and more.  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4640" target="_blank" rel="noopener noreferrer">ouroboros-network#4640</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4643" target="_blank" rel="noopener noreferrer">ouroboros-network#4643</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first
+contract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted
+code &amp; design review.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois-review">Galois Review<a class="hash-link" href="#galois-review" title="Direct link to heading">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3835" target="_blank" rel="noopener noreferrer">ouroboros-network#3835</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci">CI<a class="hash-link" href="#ci" title="Direct link to heading">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be
+executed with extra concurrency <a href="https://github.com/input-output-hk/ouroboros-network/pull/4637" target="_blank" rel="noopener noreferrer">ouroboros-network#4637</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4649" target="_blank" rel="noopener noreferrer">ouroboros-network#4649</a>.</p><p>We also added GitHub's dependabot <a href="https://github.com/input-output-hk/ouroboros-network/pull/4650" target="_blank" rel="noopener noreferrer">ouroboros-network#4650</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We settled on implementation design of bootstrap peers which is being
+implemented, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-08-18-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-18-sre"/>
+        <updated>2023-08-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href="https://flake.parts" target="_blank" rel="noopener noreferrer">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href="https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href="https://github.com/input-output-hk/cardano-world/pull/109" target="_blank" rel="noopener noreferrer">cardano-world-pull-109</a></li><li>Update p2p configs: <a href="https://github.com/input-output-hk/cardano-world/pull/110" target="_blank" rel="noopener noreferrer">cardano-world-pull-110</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inputs-check">Inputs-check<a class="hash-link" href="#inputs-check" title="Direct link to heading">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href="https://github.com/input-output-hk/inputs-check" target="_blank" rel="noopener noreferrer">inputs-check</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-08-17-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-17-crypto"/>
+        <updated>2023-08-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Full Node Verifier merged <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href="https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta" target="_blank" rel="noopener noreferrer">this</a> fork.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href="https://github.com/input-output-hk/kes-agent/issues/19" target="_blank" rel="noopener noreferrer">#19</a></li><li>Receipt confirmation message <a href="https://github.com/input-output-hk/kes-agent/issues/20" target="_blank" rel="noopener noreferrer">#20</a></li><li>KES agent binary ready <a href="https://github.com/input-output-hk/kes-agent/issues/21" target="_blank" rel="noopener noreferrer">#21</a></li><li>Control client implemented <a href="https://github.com/input-output-hk/kes-agent/issues/11" target="_blank" rel="noopener noreferrer">#11</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-08-17-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-17-db-sync"/>
+        <updated>2023-08-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.
+We also continued testing and improving the new db-sync options.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Conway integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Support for Sanchonet
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1476" target="_blank" rel="noopener noreferrer">#1476</a></li><li>Stake distribution is computed earlier
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Testing new db-sync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>Added support for ghc-9.6
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1479" target="_blank" rel="noopener noreferrer">#1479</a></li><li>Tech debt: improve exceptions
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1471" target="_blank" rel="noopener noreferrer">#1471</a></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SECP bindings Security Issue Report]]></title>
+        <id>2023-08-17-secp-issue</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-17-secp-issue"/>
+        <updated>2023-08-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Security Issue Report: SECP256k1 bug]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="security-issue-report-secp256k1-bug">Security Issue Report: SECP256k1 bug<a class="hash-link" href="#security-issue-report-secp256k1-bug" title="Direct link to heading">​</a></h2><p>Date Occurred: July 15, 2022
+Severity:  Potentially Very High if exploited on Mainnet
+Authors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-issue">Summary of Issue<a class="hash-link" href="#summary-of-issue" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="criticality-level">Criticality Level<a class="hash-link" href="#criticality-level" title="Direct link to heading">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet
+Context</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.
+How was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="what-action-was-taken">What Action was Taken<a class="hash-link" href="#what-action-was-taken" title="Direct link to heading">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).
+Fixes were applied to prevent the use of the primitives.
+A full security audit was carried out on the bindings.
+The rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="potential-effect">Potential Effect<a class="hash-link" href="#potential-effect" title="Direct link to heading">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="actual-effect">Actual Effect<a class="hash-link" href="#actual-effect" title="Direct link to heading">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ongoing-mitigations-needed-if-any">Ongoing Mitigations Needed, if any<a class="hash-link" href="#ongoing-mitigations-needed-if-any" title="Direct link to heading">​</a></h4><p>None</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="responsibility-for-mitigations">Responsibility for Mitigations<a class="hash-link" href="#responsibility-for-mitigations" title="Direct link to heading">​</a></h4><p>Core team</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description-of-incident">Detailed description of Incident<a class="hash-link" href="#detailed-description-of-incident" title="Direct link to heading">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin's library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518" target="_blank" rel="noopener noreferrer">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61" target="_blank" rel="noopener noreferrer">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170" target="_blank" rel="noopener noreferrer">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10" target="_blank" rel="noopener noreferrer">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/289" target="_blank" rel="noopener noreferrer">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="recommendations">Recommendations<a class="hash-link" href="#recommendations" title="Direct link to heading">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are "safe". Treat all external calls circumspectly.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-08-15-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-15-node-cli-api"/>
+        <updated>2023-08-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-08-02 - 2023-08-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/169" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/164" target="_blank" rel="noopener noreferrer">Reenable golden tests</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/163" target="_blank" rel="noopener noreferrer">#128 DRep key generation</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/160" target="_blank" rel="noopener noreferrer">Bump index states</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/159" target="_blank" rel="noopener noreferrer">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/158" target="_blank" rel="noopener noreferrer">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/151" target="_blank" rel="noopener noreferrer">Plural for command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/144" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/142" target="_blank" rel="noopener noreferrer">Wire up constitution creation in the new era based cli commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/140" target="_blank" rel="noopener noreferrer">cardano-cli 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/137" target="_blank" rel="noopener noreferrer">Wire up remaining DReps</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/136" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/189" target="_blank" rel="noopener noreferrer">Release cardano-api 8.13.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/187" target="_blank" rel="noopener noreferrer">Fix build</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/185" target="_blank" rel="noopener noreferrer">cardano-api 8.13.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/181" target="_blank" rel="noopener noreferrer">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/180" target="_blank" rel="noopener noreferrer">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/173" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/171" target="_blank" rel="noopener noreferrer">Simplify code with new constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/170" target="_blank" rel="noopener noreferrer">Fix <code>EraCast Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/168" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/167" target="_blank" rel="noopener noreferrer">Fix committee hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/164" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/163" target="_blank" rel="noopener noreferrer">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5430" target="_blank" rel="noopener noreferrer">cardano-git-rev: New version for CHaP</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-08-11-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-11-hydra"/>
+        <updated>2023-08-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version
+8.1.2, ensuring compatibility with the latest mainnet release. The team also
+participated in discussions about a "cardanonical" JSON schema and added it as a
+submodule to the project, contributing to improved data modeling and
+interoperability.</p><p>In terms of community engagement, the team successfully onboarded a new
+contributor, also participated in a RareEvo Twitter space, and continued
+preparations for the Hydra master-class.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href="https://github.com/input-output-hk/hydra/issues/1007" target="_blank" rel="noopener noreferrer">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and
+add it as submodule to the project
+<a href="https://github.com/input-output-hk/hydra/pull/1013" target="_blank" rel="noopener noreferrer">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Release 0.12.0</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-08-11-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-11-performance-and-tracing"/>
+        <updated>2023-08-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we're currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of our release benchmarking cycle, we've completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,
+we're working on having a trace message self-document the final tracing configuration of a running node. Apart from adding
+insight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we're setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent
+and reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were
+able to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-08-10-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-10-mithril"/>
+        <updated>2023-08-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the <strong>Mithril protocol’s mainnet beta</strong> launch: the <code>release-mainnet</code> network is now consistently producing new certificates and snapshots! The team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a></li><li>Completed the epic <code>Release 'mainnet' Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href="https://github.com/input-output-hk/mithril/issues/1085" target="_blank" rel="noopener noreferrer">#1085</a></li><li>Completed the issue <code>Ingest 'mainnet' metrics/logs in Grafana</code> <a href="https://github.com/input-output-hk/mithril/issues/1122" target="_blank" rel="noopener noreferrer">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a 'clean' file to extracted database in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1131" target="_blank" rel="noopener noreferrer">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href="https://github.com/input-output-hk/mithril/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Completed the issue <code>The 'release-preprod' network stopped producing certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Completed the issue <code>The 'release-mainnet' network does not show up in the explorer</code> <a href="https://github.com/input-output-hk/mithril/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.2'</code> <a href="https://github.com/input-output-hk/mithril/issues/1090" target="_blank" rel="noopener noreferrer">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can't sign with 'Invalid signature for party' error</code> <a href="https://github.com/input-output-hk/mithril/issues/1125" target="_blank" rel="noopener noreferrer">#1125</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-08-09-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-09-consensus"/>
+        <updated>2023-08-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/256" target="_blank" rel="noopener noreferrer">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/261" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href="https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd" target="_blank" rel="noopener noreferrer">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> and <a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn't happened yet.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-08-04-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-crypto"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Work on a mithril flaky test <a href="https://github.com/input-output-hk/mithril/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Keep working on Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Should be merged in the coming week.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Finalised the fuzz tests <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">#43</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-08-04-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-goedel"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is formalising mini protocols and also further developing the
+performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Developing new framework for specification and verification of
+mini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that
+allows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-08-04-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-hydra"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the
+project. The team updated the use case section for auctions on the <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a>
+branch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced
+persistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves
+off-chain transaction processing performance. They also added a
+<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community
+reviews for several catalyst proposals related to Hydra and Mithril,
+contributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a> branch)</li><li>Completed event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href="https://github.com/input-output-hk/hydra/pull/1006" target="_blank" rel="noopener noreferrer">#1006</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-08-04-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-ledger"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In
+particular, the main focus was directed towards solidifying transaction related types and
+their binary representation. We also directed some effort into unblocking Plutus team with
+respect to PlutusV3 integration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3581" target="_blank" rel="noopener noreferrer">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3571" target="_blank" rel="noopener noreferrer">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a> - Add Script to Constitution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3576" target="_blank" rel="noopener noreferrer">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3579" target="_blank" rel="noopener noreferrer">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3585" target="_blank" rel="noopener noreferrer">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3587" target="_blank" rel="noopener noreferrer">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3586" target="_blank" rel="noopener noreferrer">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3588" target="_blank" rel="noopener noreferrer">pull-3588</a> - Rename key roles</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3595" target="_blank" rel="noopener noreferrer">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3600" target="_blank" rel="noopener noreferrer">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3597" target="_blank" rel="noopener noreferrer">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a> - New features for generation subject to constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3519" target="_blank" rel="noopener noreferrer">pull-3519</a> - Basic Conway features test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugfixes">Bugfixes<a class="hash-link" href="#bugfixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3566" target="_blank" rel="noopener noreferrer">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-integration">Plutus integration<a class="hash-link" href="#plutus-integration" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3538" target="_blank" rel="noopener noreferrer">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3593" target="_blank" rel="noopener noreferrer">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3574" target="_blank" rel="noopener noreferrer">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3573" target="_blank" rel="noopener noreferrer">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3555" target="_blank" rel="noopener noreferrer">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3575" target="_blank" rel="noopener noreferrer">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3567" target="_blank" rel="noopener noreferrer">pull-3567</a> - Backport mint field translation bugfix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3568" target="_blank" rel="noopener noreferrer">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3572" target="_blank" rel="noopener noreferrer">pull-3572</a> - Release/backport tickf bugfix</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-08-04-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-network"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level overview of sprint 41]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-41">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22" target="_blank" rel="noopener noreferrer">sprint 41</a><a class="hash-link" href="#high-level-overview-of-sprint-41" title="Direct link to heading">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed
+to provide a safety guarantee for nodes joining the network while still taking
+advantage of the distributed network for nodes that are synced.  This will be
+an intermediate step before Genesis which will allow for further distribute the
+system.  The bootstrap peers will be run by some trusted partners like CF,
+Emurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node
+wallets), which often end up syncing and require access to the honest chain. See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated
+thunks which can lead to memory leaks <a href="https://github.com/input-output-hk/ouroboros-network/issues/4633" target="_blank" rel="noopener noreferrer">ouroboros-network#4633</a>.  We found
+a small one in the peer metric component of the P2P networking stack.  Fixing
+it put us on a small detour of fixing the API of the <a href="https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars" target="_blank" rel="noopener noreferrer"><code>strict-checked-vars</code></a>
+package: <a href="https://github.com/input-output-hk/cardano-base/pulls/431" target="_blank" rel="noopener noreferrer">cardano-base#431</a>, <a href="https://github.com/input-output-hk/cardano-base/pulls/432" target="_blank" rel="noopener noreferrer">cardano-base#432</a>, as well as adding <code>NFData</code>
+instance to <a href="https://github.com/input-output-hk/io-sim/pull/110" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>.  We also improved <code>nothunks</code>
+library to make debugging easier and we provided a <code>NoThunks</code> instance for
+<code>ThreadId</code> which we will need in the future (see <a href="https://github.com/input-output-hk/nothunks/pull/33" target="_blank" rel="noopener noreferrer">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related
+packages to <a href="https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0" target="_blank" rel="noopener noreferrer">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big
+ledger peers, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it's not possible to
+shutdown a node which was starting while trying to update network topology,
+see <a href="https://github.com/input-output-hk/cardano-node/pull/5421" target="_blank" rel="noopener noreferrer">cardano-node#5421</a>.</p><p>I didn't mention that in the previous update, so here it goes: in the previous
+sprint we released <a href="https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-0.8.2.0</code></a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-08-04-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-performance-and-tracing"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We're adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We've finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We've been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we've successfully performed various benchmarking runs on it.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking
+cluster automation. We've pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint
+when using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any
+inconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.
+This feature adds another layer of robustness to the whole system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler
+versions. We've future-proofed our benchmarking code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend
+accordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we've observed with the
+nomad backend - which will be a big step towards production use.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-08-04-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-04-sre"/>
+        <updated>2023-08-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href="https://github.com/input-output-hk/cardano-ops/pull/416" target="_blank" rel="noopener noreferrer">cardano-ops-pull-416</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href="https://github.com/input-output-hk/cardano-world/pull/104" target="_blank" rel="noopener noreferrer">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/105" target="_blank" rel="noopener noreferrer">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/106" target="_blank" rel="noopener noreferrer">cardano-world-pull-106</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-08-01-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-08-01-node-cli-api"/>
+        <updated>2023-08-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-07-19 - 2023-08-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/116" target="_blank" rel="noopener noreferrer">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/115" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/113" target="_blank" rel="noopener noreferrer">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/111" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/110" target="_blank" rel="noopener noreferrer">Add DRep registration certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/109" target="_blank" rel="noopener noreferrer">Add options to delegate voting stake </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/107" target="_blank" rel="noopener noreferrer">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/106" target="_blank" rel="noopener noreferrer">Release cardano-cli 8.4.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/103" target="_blank" rel="noopener noreferrer">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/100" target="_blank" rel="noopener noreferrer">Change directory structure from Options/.. to EraBased/..</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/98" target="_blank" rel="noopener noreferrer">Era-sensitive command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/90" target="_blank" rel="noopener noreferrer">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/155" target="_blank" rel="noopener noreferrer">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/154" target="_blank" rel="noopener noreferrer">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/152" target="_blank" rel="noopener noreferrer">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/151" target="_blank" rel="noopener noreferrer">Deprecate some constraint functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/150" target="_blank" rel="noopener noreferrer">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/149" target="_blank" rel="noopener noreferrer">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/148" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/147" target="_blank" rel="noopener noreferrer">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/146" target="_blank" rel="noopener noreferrer">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/143" target="_blank" rel="noopener noreferrer">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/142" target="_blank" rel="noopener noreferrer">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/141" target="_blank" rel="noopener noreferrer">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/138" target="_blank" rel="noopener noreferrer">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/137" target="_blank" rel="noopener noreferrer">Support more constraints for Conway witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/135" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/134" target="_blank" rel="noopener noreferrer">Expose toShelleyPoolParams for conway integration</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/131" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/130" target="_blank" rel="noopener noreferrer">Expose more functionality from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/128" target="_blank" rel="noopener noreferrer">Improved feature ergonomics</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/127" target="_blank" rel="noopener noreferrer">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5412" target="_blank" rel="noopener noreferrer">Fix stubbed LogFormatting instances</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5401" target="_blank" rel="noopener noreferrer">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5400" target="_blank" rel="noopener noreferrer">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a><ul><li><a href="https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42" target="_blank" rel="noopener noreferrer">WarmValency</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-07-31-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-31-network"/>
+        <updated>2023-07-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Update (Sprints 39 & 40)]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update-sprints-39--40">Network Update (Sprints 39 &amp; 40)<a class="hash-link" href="#network-update-sprints-39--40" title="Direct link to heading">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.
+It was great to see and talk to so many of the community members.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-39-jun-26---jul-09">Sprint 39 (Jun 26 - Jul 09)<a class="hash-link" href="#sprint-39-jun-26---jul-09" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes">Major changes<a class="hash-link" href="#major-changes" title="Direct link to heading">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-client-protocol"><code>node-to-client</code> protocol<a class="hash-link" href="#node-to-client-protocol" title="Direct link to heading">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-node-protocol"><code>node-to-node</code> protocol<a class="hash-link" href="#node-to-node-protocol" title="Direct link to heading">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.
+The <code>cardano-client-0.2.0.0</code> was not affected.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4612" target="_blank" rel="noopener noreferrer">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).
+Dynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.
+See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">ouroboros-network#4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="minor-changes">Minor changes<a class="hash-link" href="#minor-changes" title="Direct link to heading">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-40-jul-09---jul-23">Sprint 40 (Jul 09 - Jul 23)<a class="hash-link" href="#sprint-40-jul-09---jul-23" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes-1">Major changes<a class="hash-link" href="#major-changes-1" title="Direct link to heading">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).
+This includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.
+This feature is documented in the <a href="https://github.com/input-output-hk/cardano-node/pull/5399" target="_blank" rel="noopener noreferrer">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre" target="_blank" rel="noopener noreferrer">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.
+Peer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">ouroboros-network#4620</a>.
+The improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.
+Previously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.
+The hot valency (previously known simply as valency) hasn't changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.
+Warm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">cardano-node#5409</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-07-28-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-28-hydra"/>
+        <updated>2023-07-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.
+They conducted the monthly review meeting for July, which continously ensures
+transparent communication and project evaluation. The team migrated the core
+logic of the node to an event-sourced architecture and incremental writes of
+events to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.
+Furthermore, the team added the ability to read protocol parameters via the API
+and fixed the CI workflows to support pull requests from forks of external
+contributors, streamlining the development process for community involvement.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting for July (<a href="https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/" target="_blank" rel="noopener noreferrer">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href="https://github.com/input-output-hk/hydra/pull/999" target="_blank" rel="noopener noreferrer">#999</a></li><li>Updated persistence to faster incremental writes of events <a href="https://github.com/input-output-hk/hydra/pull/1000" target="_blank" rel="noopener noreferrer">#1000</a></li><li>Added ability to read protocol parameters via API <a href="https://github.com/input-output-hk/hydra/issues/735" target="_blank" rel="noopener noreferrer">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href="https://github.com/input-output-hk/hydra/pull/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Updated to GHC 9.2.8 <a href="https://github.com/input-output-hk/hydra/pull/1005" target="_blank" rel="noopener noreferrer">#1005</a></li><li>Prepared an updated use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a> (published with next release)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-07-27-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-27-mithril"/>
+        <updated>2023-07-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team launched <strong>Mithril protocol’s mainnet beta</strong>: the <code>release-mainnet</code> network is now open for signer registrations, and its genesis certificate has been created. The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href="https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide" target="_blank" rel="noopener noreferrer">onboarding SPOs</a> and setting up a <a href="https://mithril.network/doc/manual/getting-started/run-signer-node" target="_blank" rel="noopener noreferrer">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the dev blog post <a href="https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch" target="_blank" rel="noopener noreferrer">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Deploy 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Release 'mainnet' Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Completed the issue <code>Add a 'sign' sub-command to 'genesis' command in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1081" target="_blank" rel="noopener noreferrer">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance 'Run a Mithril Signer node (SPO)' guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1055" target="_blank" rel="noopener noreferrer">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href="https://github.com/input-output-hk/mithril/issues/1073" target="_blank" rel="noopener noreferrer">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href="https://github.com/input-output-hk/mithril/issues/834" target="_blank" rel="noopener noreferrer">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of 'ProtocolVerificationKey'</code> <a href="https://github.com/input-output-hk/mithril/issues/1083" target="_blank" rel="noopener noreferrer">#1083</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-07-26-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-26-consensus"/>
+        <updated>2023-07-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.
+We also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.
+Currently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-liaising">Genesis liaising<a class="hash-link" href="#genesis-liaising" title="Direct link to heading">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/222" target="_blank" rel="noopener noreferrer">#222</a>.</li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/233" target="_blank" rel="noopener noreferrer">#233</a>.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-07-21-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-21-hydra"/>
+        <updated>2023-07-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated the specification to align with recent
+off-chain protocol changes, completed refactoring the snapshot emission
+in preparation for event-sourced protocol logic, and updated to GHC
+9.2.7, resulting in improved compile times and slightly smaller Plutus
+scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol
+changes to complete
+<a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Refactored the snapshot emission logic in preparation for event
+sourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and
+slightly smaller plutus scripts.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence
+<a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Update the use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a></li><li>Remove deprecated internal commit
+<a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a>.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-07-21-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-21-ledger"/>
+        <updated>2023-07-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.
+All members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.
+We also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).
+Additionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.
+We also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-we-achieved">What we achieved<a class="hash-link" href="#what-we-achieved" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3521" target="_blank" rel="noopener noreferrer">pull-3521</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3554" target="_blank" rel="noopener noreferrer">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3520" target="_blank" rel="noopener noreferrer">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3531" target="_blank" rel="noopener noreferrer">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3558" target="_blank" rel="noopener noreferrer">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3550" target="_blank" rel="noopener noreferrer">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3551" target="_blank" rel="noopener noreferrer">pull-3551</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3546" target="_blank" rel="noopener noreferrer">pull-3546</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3472" target="_blank" rel="noopener noreferrer">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3146" target="_blank" rel="noopener noreferrer">issue-3146</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3498" target="_blank" rel="noopener noreferrer">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2948" target="_blank" rel="noopener noreferrer">issue-2948</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3499" target="_blank" rel="noopener noreferrer">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-currently-in-progress">What is currently in progress<a class="hash-link" href="#what-is-currently-in-progress" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3494" target="_blank" rel="noopener noreferrer">issue-3494</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3436" target="_blank" rel="noopener noreferrer">issue-3436</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3509" target="_blank" rel="noopener noreferrer">issue-3509</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3532" target="_blank" rel="noopener noreferrer">issue-3532</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a>] Add script-support for the constitution</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3543" target="_blank" rel="noopener noreferrer">issue-3543</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a>] Improve the 'new committee' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul>]]></content>
+        <author>
+            <name>Alexey Kuleshevich</name>
+            <uri>https://github.com/lehins</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-07-21-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-21-sre"/>
+        <updated>2023-07-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href="https://github.com/input-output-hk/cardano-node/pull/5406" target="_blank" rel="noopener noreferrer">cardano-node-pull-5406</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href="https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href="https://github.com/input-output-hk/cardano-world/pull/102" target="_blank" rel="noopener noreferrer">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/103" target="_blank" rel="noopener noreferrer">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href="https://github.com/input-output-hk/cardano-world/pull/91" target="_blank" rel="noopener noreferrer">cardano-world-pull-91</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/iohk-nix/pull/549" target="_blank" rel="noopener noreferrer">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href="https://github.com/input-output-hk/iohk-nix/pull/550" target="_blank" rel="noopener noreferrer">iohk-nix-pull-550</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-07-20-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-20-goedel"/>
+        <updated>2023-07-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on formalising mini protocols, the performance
+modelling prototype and also finishing off their ICE papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the
+thorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of
+mini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete
+backend based on piecewise-polynomials</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-07-18-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-18-node-cli-api"/>
+        <updated>2023-07-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-07-05 - 2023-07-18</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/74" target="_blank" rel="noopener noreferrer">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/72" target="_blank" rel="noopener noreferrer">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/68" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/67" target="_blank" rel="noopener noreferrer">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/66" target="_blank" rel="noopener noreferrer">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/65" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/123" target="_blank" rel="noopener noreferrer">Fix ghc version CPP</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/122" target="_blank" rel="noopener noreferrer">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/119" target="_blank" rel="noopener noreferrer">Incorporate remaining ledger certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/117" target="_blank" rel="noopener noreferrer">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/115" target="_blank" rel="noopener noreferrer">Fix Eq, Show for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/112" target="_blank" rel="noopener noreferrer">Wire up remaining governance actions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/108" target="_blank" rel="noopener noreferrer">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/106" target="_blank" rel="noopener noreferrer">Remove unnecessary constraint</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/104" target="_blank" rel="noopener noreferrer">Make it build with ghc-9.6</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/103" target="_blank" rel="noopener noreferrer">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/102" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/101" target="_blank" rel="noopener noreferrer">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/99" target="_blank" rel="noopener noreferrer">Update ledger and consensus</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/98" target="_blank" rel="noopener noreferrer">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5391" target="_blank" rel="noopener noreferrer">Fix Shutdown test for new exit codes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5387" target="_blank" rel="noopener noreferrer">Fix markdown links</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/69" target="_blank" rel="noopener noreferrer">Apply <code>stylish-haskell</code> to project</a></li></ul>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-07-14-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-14-hydra"/>
+        <updated>2023-07-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order
+to improve <code>hydra-node</code> performance. Because of this work the team noticed we
+need to refactor the emit snapshot emission logic and update the spec in the
+light of new changes. They also took the time to revisit their goals and product
+plans for the next quarter as well as doing some security fixes related to
+multisignatures.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/963" target="_blank" rel="noopener noreferrer">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4" target="_blank" rel="noopener noreferrer">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href="https://github.com/input-output-hk/hydra/pull/962" target="_blank" rel="noopener noreferrer">#962</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement Event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Remove deprecated internal commit <a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a> and close <a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a>.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <author>
+            <name>Sasha Bogicevic</name>
+            <uri>https://github.com/v0d1ch</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-07-13-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-13-mithril"/>
+        <updated>2023-07-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a> distribution. They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li><li>Worked on the issue <code>Deploy 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/932" target="_blank" rel="noopener noreferrer">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1037" target="_blank" rel="noopener noreferrer">#1037</a></li><li>Completed the issue <code>Add 'created_at' in Mithril Stake Distribution messages</code> <a href="https://github.com/input-output-hk/mithril/issues/1030" target="_blank" rel="noopener noreferrer">#1030</a></li><li>Completed the issue <code>Add a 'run-only' option in end to end test</code> <a href="https://github.com/input-output-hk/mithril/issues/1048" target="_blank" rel="noopener noreferrer">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href="https://github.com/input-output-hk/mithril/issues/1058" target="_blank" rel="noopener noreferrer">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/874" target="_blank" rel="noopener noreferrer">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href="https://github.com/input-output-hk/mithril/issues/1040" target="_blank" rel="noopener noreferrer">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href="https://github.com/input-output-hk/mithril/issues/1041" target="_blank" rel="noopener noreferrer">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href="https://github.com/input-output-hk/mithril/issues/952" target="_blank" rel="noopener noreferrer">#952</a></li><li>Completed the issue <code>'testing-preview' network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/837" target="_blank" rel="noopener noreferrer">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href="https://github.com/input-output-hk/mithril/issues/1035" target="_blank" rel="noopener noreferrer">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1023" target="_blank" rel="noopener noreferrer">#1023</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-07-12-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-12-consensus"/>
+        <updated>2023-07-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/200" target="_blank" rel="noopener noreferrer">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-07-12-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-12-performance-and-tracing"/>
+        <updated>2023-07-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-07-07-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-07-crypto"/>
+        <updated>2023-07-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes_agent">kes_agent<a class="hash-link" href="#kes_agent" title="Direct link to heading">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href="https://github.com/input-output-hk/kes-agent/issues/14" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Included benchmarks and further tests.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cips-and-community">CIPs and community<a class="hash-link" href="#cips-and-community" title="Direct link to heading">​</a></h3><ul><li>Addressed some review comments in <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#PR506</a></li><li>Worked with the communityt on <a href="https://github.com/cardano-foundation/CIPs/pull/524" target="_blank" rel="noopener noreferrer">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-07-07-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-07-goedel"/>
+        <updated>2023-07-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers
+for publication in EPTCS, formalising concensus, and investigating chain
+sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-07-07-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-07-hydra"/>
+        <updated>2023-07-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the
+network layer further by implementing authentication of the messages between the
+peers in the Head protocol. In the process they also managed to separate
+HeartBeat messages from the protocol ones which somewhat improved the quality of
+code in Hydra. The team also finished work related to sending only transaction
+ids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark
+publishing on the website.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">Implemented</a> authenticated messages</li><li><a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href="https://github.com/input-output-hk/hydra/pull/969" target="_blank" rel="noopener noreferrer">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href="https://github.com/input-output-hk/hydra/pull/947" target="_blank" rel="noopener noreferrer">benchmarks</a></li><li><a href="https://github.com/input-output-hk/hydra/pull/967" target="_blank" rel="noopener noreferrer">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href="https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1" target="_blank" rel="noopener noreferrer">off-chain signature
+verification</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <author>
+            <name>Sasha Bogicevic</name>
+            <uri>https://github.com/v0d1ch</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-07-07-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-07-sre"/>
+        <updated>2023-07-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href="https://github.com/input-output-hk/cardano-node/pull/5360" target="_blank" rel="noopener noreferrer">cardano-node-pull-5360</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ogmios">Cardano-ogmios<a class="hash-link" href="#cardano-ogmios" title="Direct link to heading">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href="https://github.com/input-output-hk/cardano-ogmios/pull/6" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-6</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href="https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-rosetta">Cardano-rosetta<a class="hash-link" href="#cardano-rosetta" title="Direct link to heading">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href="https://github.com/cardano-foundation/cardano-rosetta/pull/532" target="_blank" rel="noopener noreferrer">cardano-rosetta-pull-532</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href="https://github.com/input-output-hk/cardano-world/pull/99" target="_blank" rel="noopener noreferrer">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href="https://github.com/input-output-hk/cardano-world/pull/100" target="_blank" rel="noopener noreferrer">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href="https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href="https://github.com/input-output-hk/cardano-world/pull/101" target="_blank" rel="noopener noreferrer">cardano-world-pull-101</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href="https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911" target="_blank" rel="noopener noreferrer">spongix-simple-branch</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Developer Experience Update]]></title>
+        <id>2023-07-06-developer-experience</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-06-developer-experience"/>
+        <updated>2023-07-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We've also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="hydra-tools">Hydra Tools<a class="hash-link" href="#hydra-tools" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/hydra-tools" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>]]></content>
+        <author>
+            <name>Moritz Angermann</name>
+            <uri>https://github.com/angerman</uri>
+        </author>
+        <category label="devx" term="devx"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-07-04-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-04-db-sync"/>
+        <updated>2023-07-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1455" target="_blank" rel="noopener noreferrer">#1455</a>.</li><li>This also fixes a bug
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1451" target="_blank" rel="noopener noreferrer">#1451</a></li><li>Added new tests to the new tx_out options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency
+This fixes many other issues and simplifies the logic in db-sync
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1447" target="_blank" rel="noopener noreferrer">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1436" target="_blank" rel="noopener noreferrer">#1436</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1442" target="_blank" rel="noopener noreferrer">#1442</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1448" target="_blank" rel="noopener noreferrer">#1448</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1452" target="_blank" rel="noopener noreferrer">#1452</a></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-07-04-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-07-04-node-cli-api"/>
+        <updated>2023-07-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-06-21 - 2023-07-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance "Update constitution" governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/60" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/44" target="_blank" rel="noopener noreferrer">Release 8.2.1</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/39" target="_blank" rel="noopener noreferrer">Use new function-based API instead of using query data types directly</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/94" target="_blank" rel="noopener noreferrer">Release cardano-api 8.7</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/92" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/90" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/88" target="_blank" rel="noopener noreferrer">Backport: Add era phantom type parameter to Certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/86" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/85" target="_blank" rel="noopener noreferrer">Voting procedure and proposal procedure updates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/84" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/83" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/77" target="_blank" rel="noopener noreferrer">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/70" target="_blank" rel="noopener noreferrer">Update CHaP index</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/41" target="_blank" rel="noopener noreferrer">CIP-1694 API - Part 1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node top level error handler</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5364" target="_blank" rel="noopener noreferrer">Report payment address and UTxOs in testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5362" target="_blank" rel="noopener noreferrer">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/33" target="_blank" rel="noopener noreferrer">Release workflow description</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/75" target="_blank" rel="noopener noreferrer">Add PR changelog check</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/71" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/62" target="_blank" rel="noopener noreferrer">Enable CI on PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/53" target="_blank" rel="noopener noreferrer">Remove merge_group trigger from changelog check CI</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/46" target="_blank" rel="noopener noreferrer">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/41" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/40" target="_blank" rel="noopener noreferrer">Enable CI in PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/48" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li></ul>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-06-30-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-30-hydra"/>
+        <updated>2023-06-30T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,
+implemented the end-to-end functionality for external commits, and tested it on
+the preview environment. They also listed Hydra as a tool on the Cardano
+developer portal, providing more visibility for the project. The team clarified
+the path forward for L2 protocol improvements and explored an alternative CI
+approach using cabal instead of nix. Additionally, they released version 0.11.0,
+marking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Written and published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-06" target="_blank" rel="noopener noreferrer">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li><li>Listed Hydra as a tool on cardano <a href="https://developers.cardano.org/tools/" target="_blank" rel="noopener noreferrer">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Established an alternative CI using more cabal tools <a href="https://github.com/input-output-hk/hydra/pull/923" target="_blank" rel="noopener noreferrer">#923</a></li><li>Release version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.11.0</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Complete ReqSn only sends transaction ids <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-06-29-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-29-mithril"/>
+        <updated>2023-06-29T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano <code>mainnet</code> infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on 'mainnet' and 'preview'/'preprod'</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1018" target="_blank" rel="noopener noreferrer">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href="https://github.com/input-output-hk/mithril/issues/1017" target="_blank" rel="noopener noreferrer">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href="https://github.com/input-output-hk/mithril/issues/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href="https://github.com/input-output-hk/mithril/issues/1006" target="_blank" rel="noopener noreferrer">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>'testing-preview' network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Completed the issue <code>Add 'recompute-certificates-hash' command to aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1001" target="_blank" rel="noopener noreferrer">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/984" target="_blank" rel="noopener noreferrer">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/944" target="_blank" rel="noopener noreferrer">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/978" target="_blank" rel="noopener noreferrer">#978</a></li><li>Completed the issue <code>Clean 'pending_snapshot' directory of aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/983" target="_blank" rel="noopener noreferrer">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href="https://github.com/input-output-hk/mithril/issues/1000" target="_blank" rel="noopener noreferrer">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/982" target="_blank" rel="noopener noreferrer">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1010" target="_blank" rel="noopener noreferrer">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.1'</code> <a href="https://github.com/input-output-hk/mithril/issues/973" target="_blank" rel="noopener noreferrer">#973</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-06-28-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-28-consensus"/>
+        <updated>2023-06-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722" target="_blank" rel="noopener noreferrer">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/149" target="_blank" rel="noopener noreferrer">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/87" target="_blank" rel="noopener noreferrer">added</a> a new "legacy" cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don't involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-06-28-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-28-performance-and-tracing"/>
+        <updated>2023-06-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We've looked into an issue where the tracing system's concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9's significantly different inlining behaviour may produce those effects. We're currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The tracing system's concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we've been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we're continuing the new backend's validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-06-23-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-23-goedel"/>
+        <updated>2023-06-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-06-23-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-23-hydra"/>
+        <updated>2023-06-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review
+meeting (monthly report and video recording available soon) and started
+experimenting on preview network with the new commit from external wallet
+feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">commit from external
+wallet</a></li><li>Published regular <a href="https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks" target="_blank" rel="noopener noreferrer">benchmarks for
+Hydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs
+<a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full
+transactions <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a> -&gt; this
+is now evolved into fully addressing <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet
+<a href="https://github.com/input-output-hk/hydra/pull/924" target="_blank" rel="noopener noreferrer">#924</a></li><li>Add flag option to display node version on tui
+<a href="https://github.com/input-output-hk/hydra/pull/934" target="_blank" rel="noopener noreferrer">#934</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a></li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <author>
+            <name>Pascal Grange</name>
+            <uri>https://github.com/pgrange</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-06-23-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-23-network"/>
+        <updated>2023-06-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions">Key contributions<a class="hash-link" href="#key-contributions" title="Direct link to heading">​</a></h3><p>We held a series of session to review the implementation of big ledger peers
+(eclipse evasion). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec
+and protocol implementation.  We worked out a nice solution which takes
+advantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we
+provide <code>Any</code> type which gen generate almost any CBOR term (some are excluded
+only because they are not decoded back to the same form, and we relay on that
+property).  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has
+a limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is
+ignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that
+the format of messages has changed, timestamps are printed in ISO8601 format.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">#4601</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">#5326</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers
+when the chain is close to the tip, we continued to work on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.  This is
+currently in review, the consensus team will need to provide us with the new
+api.  This feature is useful for two reasons: makes it easier to maintain
+a topology file, it will also limit the traffic on public roots generated by
+for example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design
+&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-changes">Other smaller changes<a class="hash-link" href="#other-smaller-changes" title="Direct link to heading">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger
+peers DNS names are resolved concurrently, and at most 2 local root peer DNS
+names. See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">#4596</a>.</p><p>We fixed handshake query timeout in <a href="https://github.com/input-output-hk/ouroboros-network/pull/4603" target="_blank" rel="noopener noreferrer">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the
+consensus team, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">#4608</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-06-23-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-23-sre"/>
+        <updated>2023-06-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href="https://github.com/input-output-hk/cardano-node/pull/5318" target="_blank" rel="noopener noreferrer">cardano-node-pull-5318</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href="https://github.com/input-output-hk/cardano-ops/pull/414" target="_blank" rel="noopener noreferrer">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/tree/ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-ops-local</a>, <a href="https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p" target="_blank" rel="noopener noreferrer">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/cardano-world/pull/96" target="_blank" rel="noopener noreferrer">cardano-world-pull-96</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href="https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9" target="_blank" rel="noopener noreferrer">ci-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href="https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250" target="_blank" rel="noopener noreferrer">ci-world-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx-ci">Devx-ci<a class="hash-link" href="#devx-ci" title="Direct link to heading">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href="https://github.com/input-output-hk/devx-ci" target="_blank" rel="noopener noreferrer">devx-ci-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/iohk-nix/pull/545" target="_blank" rel="noopener noreferrer">iohk-nix-pull-545</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-06-16-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-16-hydra"/>
+        <updated>2023-06-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and
+experiment operating a head on mainnet. They collected several bugs and issues
+and worked on fixing them. Now the team is soon to release a new version,
+0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li><li>Solved one user issue <a href="https://github.com/input-output-hk/hydra/issues/914" target="_blank" rel="noopener noreferrer">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href="https://github.com/input-output-hk/hydra/pull/928" target="_blank" rel="noopener noreferrer">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-06-15-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-15-mithril"/>
+        <updated>2023-06-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for 'Mithril Stake Distribution' in client</code> <a href="https://github.com/input-output-hk/mithril/issues/896" target="_blank" rel="noopener noreferrer">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/960" target="_blank" rel="noopener noreferrer">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the 'mainnet'</code> <a href="https://github.com/input-output-hk/mithril/issues/962" target="_blank" rel="noopener noreferrer">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on 'mainnet' and  'preview'/'preprod'</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href="https://github.com/input-output-hk/mithril/issues/953" target="_blank" rel="noopener noreferrer">#953</a></li><li>Completed the issue <code>CI tests fail with Rust '1.70.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/958" target="_blank" rel="noopener noreferrer">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Worked on the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Fix 'Mithril Client multi-platform test' with new client interface</code> <a href="https://github.com/input-output-hk/mithril/issues/956" target="_blank" rel="noopener noreferrer">#956</a></li><li>Completed the issue <code>Enhance 'ImmutableDigesterError::NotEnoughImmutable' error</code> <a href="https://github.com/input-output-hk/mithril/issues/969" target="_blank" rel="noopener noreferrer">#969</a></li><li>Completed the issue <code>Client 'snapshot download' command fails with option '--download-dir'</code> <a href="https://github.com/input-output-hk/mithril/issues/979" target="_blank" rel="noopener noreferrer">#979</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-06-14-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-14-consensus"/>
+        <updated>2023-06-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.
+There is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated "Limit on Patience" timeout sufficiently bounds how long the adversary can inflate a victim's overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.
+We managed to run a node again with UTxO-HD enabled.
+We also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-06-14-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-14-performance-and-tracing"/>
+        <updated>2023-06-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We've performed the first full runs on the new backend.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we've measured
+performance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts
+done on several system components.  </p><p>In the meantime, we've finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for
+benchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be
+meaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific
+trace messages are closely aligned. We've found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we've had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As the new backend's healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we've performed our first 52-node cluster runs on nomad cloud. We're currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new
+infrastructure to the existing ones, including determining reproducibility and variance.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-06-12-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-12-network"/>
+        <updated>2023-06-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions-and-advances">Key contributions and advances<a class="hash-link" href="#key-contributions-and-advances" title="Direct link to heading">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers
+into outbound governor known peers.  This is the primary way for new
+unregistered nodes to enter the network, which then can be shared using peer
+sharing.  Note that peer sharing is an experimental feature which is disabled
+until genesis &amp; eclipse evasion as fully implemented. See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots
+where ignored until the first domain name was resolved, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4583" target="_blank" rel="noopener noreferrer">#4583</a>.  The bug
+fix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">#140</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-cardano-ping--cardano-cli-ping-release">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class="hash-link" href="#new-cardano-ping--cardano-cli-ping-release" title="Direct link to heading">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new
+query feature (query supported versions). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">#4589</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">#4593</a> and <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>.
+The new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted
+timestamps; also the formatting of ping results is slightly improved, and it
+will introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site
+supports the query parameter, the command will print:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.064</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.045</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which
+allows us to detect whether the remote side is an <code>InitiatorOnly</code> or
+<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce
+itself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-contributions">Other smaller contributions<a class="hash-link" href="#other-smaller-contributions" title="Direct link to heading">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,
+which are now available <a href="https://input-output-hk.github.io/typed-protocols/" target="_blank" rel="noopener noreferrer">here</a> (<a href="https://github.com/input-output-hk/typed-protocols/pull/40" target="_blank" rel="noopener noreferrer">#40</a>, <a href="https://github.com/input-output-hk/typed-protocols/pull/41" target="_blank" rel="noopener noreferrer">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in
+package description file, <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new
+<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.
+The PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4580" target="_blank" rel="noopener noreferrer">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-06-09-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-09-crypto"/>
+        <updated>2023-06-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows' localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc" target="_blank" rel="noopener noreferrer">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue" target="_blank" rel="noopener noreferrer">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Developer Experience Update]]></title>
+        <id>2023-06-09-developer-experience</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-09-developer-experience"/>
+        <updated>2023-06-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We've also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href="https://github.com/input-output-hk/cardano-base" target="_blank" rel="noopener noreferrer">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we're prioritizing compaining even stronger for better backwards compatibility.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="chap-cardano-haskell-packages">CHaP (cardano-haskell-packages)<a class="hash-link" href="#chap-cardano-haskell-packages" title="Direct link to heading">​</a></h3><p>We relocated the underlying tooling, (<a href="https://github.com/input-output-hk/foliage" target="_blank" rel="noopener noreferrer">foliage</a>), for <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/260" target="_blank" rel="noopener noreferrer">improved tooling to quickly add constraints to packages</a>, <a href="https://github.com/input-output-hk/cardano-haskell-packages/issues/285" target="_blank" rel="noopener noreferrer">better error reporting for add-revision</a> and <a href="https://github.com/input-output-hk/foliage/pull/63" target="_blank" rel="noopener noreferrer">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="github-actions">GitHub Actions<a class="hash-link" href="#github-actions" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/iohk-nix" target="_blank" rel="noopener noreferrer">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The relatively new <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository's readme has been updated to reflect its purpose and usage guidelines.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>]]></content>
+        <author>
+            <name>Moritz Angermann</name>
+            <uri>https://github.com/angerman</uri>
+        </author>
+        <category label="devx" term="devx"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-06-09-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-09-hydra"/>
+        <updated>2023-06-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the
+investigation about the broken head on mainnet and re-opened their persistent
+head instance. The team also fixed the monthly report publication on their
+website and started sketching ideas and further improvements. Also, they are on
+the last mile to deliver a new feature which will allow parties to commit funds
+from extern wallets. Finally the team started to work on optimizing the
+performance on their benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a></li><li>Fix monthly report publication on docs website and published the <a href="https://hydra.family/head-protocol/monthly/2023-05" target="_blank" rel="noopener noreferrer">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href="https://github.com/input-output-hk/hydra/issues/908" target="_blank" rel="noopener noreferrer">#908</a></li><li>Open issue to docusaurus <a href="https://github.com/facebook/docusaurus/issues/9036" target="_blank" rel="noopener noreferrer">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href="https://github.com/input-output-hk/hydra/pull/910" target="_blank" rel="noopener noreferrer">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a
+bottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide
+regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li><li>Add hydra as tool to developer platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-06-08-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-08-db-sync"/>
+        <updated>2023-06-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that
+the consensus team is working on
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/88" target="_blank" rel="noopener noreferrer">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1416" target="_blank" rel="noopener noreferrer">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1419" target="_blank" rel="noopener noreferrer">#1419</a></li><li>Fixed issue with ada_pots being wrong
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href="https://github.com/input-output-hk/cardano-db-sync/releases" target="_blank" rel="noopener noreferrer"><code>13.1.1.2</code></a>
+which is tested and ready to release. It contains many of the above.</li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-06-08-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-08-goedel"/>
+        <updated>2023-06-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on giving and preparing public
+talks, also on preparing final versions of their ICE 2023 papers, and
+on analysing chain selection.</p><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:
+<a href="https://www.lambdadays.org/lambdadays2023" target="_blank" rel="noopener noreferrer">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:
+<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-06-08-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-08-sre"/>
+        <updated>2023-06-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href="https://github.com/input-output-hk/bitte/pull/194" target="_blank" rel="noopener noreferrer">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href="https://github.com/input-output-hk/bitte/pull/201" target="_blank" rel="noopener noreferrer">bitte-pull-201</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-cells">Bitte-cells<a class="hash-link" href="#bitte-cells" title="Direct link to heading">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href="https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex" target="_blank" rel="noopener noreferrer">bitte-cells-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-graphql">Cardano-graphql<a class="hash-link" href="#cardano-graphql" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href="https://github.com/input-output-hk/cardano-graphql/pull/815" target="_blank" rel="noopener noreferrer">cardano-graphql-pull-815</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href="https://github.com/input-output-hk/cardano-node/pull/5241" target="_blank" rel="noopener noreferrer">cardano-node-pull-5241</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href="https://github.com/input-output-hk/cardano-ops/pull/411" target="_blank" rel="noopener noreferrer">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/compare/master...ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href="https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href="https://github.com/input-output-hk/cardano-world/pull/68" target="_blank" rel="noopener noreferrer">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href="https://github.com/input-output-hk/cardano-world/pull/69" target="_blank" rel="noopener noreferrer">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/75" target="_blank" rel="noopener noreferrer">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href="https://github.com/input-output-hk/cardano-world/pull/77" target="_blank" rel="noopener noreferrer">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href="https://github.com/input-output-hk/cardano-world/pull/79" target="_blank" rel="noopener noreferrer">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/84" target="_blank" rel="noopener noreferrer">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href="https://github.com/input-output-hk/cardano-world/pull/87" target="_blank" rel="noopener noreferrer">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href="https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href="https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href="https://github.com/input-output-hk/cardano-world/pull/92" target="_blank" rel="noopener noreferrer">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/cardano-world/pull/93" target="_blank" rel="noopener noreferrer">cardano-world-pr-93</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href="https://github.com/input-output-hk/ci-ops/pull/108" target="_blank" rel="noopener noreferrer">ci-ops-pull-108</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href="https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f" target="_blank" rel="noopener noreferrer">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/22" target="_blank" rel="noopener noreferrer">ci-world-pull-22</a></li><li>Migrate patroni HA db to it's own namespace in ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/24" target="_blank" rel="noopener noreferrer">ci-world-pull-24</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href="https://github.com/input-output-hk/cicero/pull/79" target="_blank" rel="noopener noreferrer">cicero-pull-79</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href="https://github.com/input-output-hk/iohk-nix/pull/534" target="_blank" rel="noopener noreferrer">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/iohk-nix/pull/544" target="_blank" rel="noopener noreferrer">iohk-nix-pull-544</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">Openziti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href="https://github.com/johnalotoski/openziti-bins/pull/1" target="_blank" rel="noopener noreferrer">openziti-bins-pull-1</a></li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[System Test Team Update]]></title>
+        <id>2023-06-08-system-test</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-08-system-test"/>
+        <updated>2023-06-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html" target="_blank" rel="noopener noreferrer">1.35.7</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html" target="_blank" rel="noopener noreferrer">8.0.0</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>]]></content>
+        <author>
+            <name>Martin Kourim</name>
+            <uri>https://github.com/mkoura</uri>
+        </author>
+        <category label="system-test" term="system-test"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-06-07-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-07-node-cli-api"/>
+        <updated>2023-06-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-06-07 - 2023-06-20</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5316" target="_blank" rel="noopener noreferrer">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">Updated cardano-cli ping command</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/28" target="_blank" rel="noopener noreferrer">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/25" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/24" target="_blank" rel="noopener noreferrer">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/20" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/59" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/58" target="_blank" rel="noopener noreferrer">New <code>requireShelleyBasedEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/57" target="_blank" rel="noopener noreferrer">New version cardano-api-8.5.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/56" target="_blank" rel="noopener noreferrer">New <code>queryEpoch</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/55" target="_blank" rel="noopener noreferrer">New version 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/54" target="_blank" rel="noopener noreferrer">Error on <code>hlint</code> warnings in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/53" target="_blank" rel="noopener noreferrer">Additional query expression functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/52" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/49" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/48" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/47" target="_blank" rel="noopener noreferrer">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/46" target="_blank" rel="noopener noreferrer">Revert to use <code>testProperty</code> now that it isn't deprecated anymore</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1" target="_blank" rel="noopener noreferrer">cardano-node 8.1.1 release</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5340" target="_blank" rel="noopener noreferrer">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5339" target="_blank" rel="noopener noreferrer">Move golden files to proper location</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5336" target="_blank" rel="noopener noreferrer">Conway testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5335" target="_blank" rel="noopener noreferrer">Don't retry testnet when failed</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5321" target="_blank" rel="noopener noreferrer">Remove YAML filepath record from data Conf</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5309" target="_blank" rel="noopener noreferrer">Remove duplicate --testnet-magic flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5307" target="_blank" rel="noopener noreferrer">Restructure cardano testnet </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/18" target="_blank" rel="noopener noreferrer">Fix Windows CI issues</a></li></ul>]]></content>
+        <author>
+            <name>Carlos LopezDeLara</name>
+            <uri>https://github.com/CarlosLopezDeLara</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-06-02-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-02-hydra"/>
+        <updated>2023-06-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many
+different problems, such as our broken head on mainnet
+<a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>, our fragile monthly
+report publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for
+external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.
+Although most of these items are still open, huge progress has been made. To
+accelerate the investigation, they improved their logging to give more precise
+errors when a transition requirement fails, and to reduce duplication on effets
+logged content. Last but not least, the team is exploring formal methods and
+attended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href="https://github.com/input-output-hk/hydra/pull/895" target="_blank" rel="noopener noreferrer">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href="https://github.com/input-output-hk/hydra/pull/896" target="_blank" rel="noopener noreferrer">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href="https://github.com/input-output-hk/hydra/pull/893" target="_blank" rel="noopener noreferrer">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-06-01-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-06-01-mithril"/>
+        <updated>2023-06-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a> distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href="https://github.com/input-output-hk/mithril/issues/925" target="_blank" rel="noopener noreferrer">#925</a></li><li>Completed the issue <code>Create the sub-command for 'Cardano Immutable Files Full' in client</code> <a href="https://github.com/input-output-hk/mithril/issues/895" target="_blank" rel="noopener noreferrer">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/933" target="_blank" rel="noopener noreferrer">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/892" target="_blank" rel="noopener noreferrer">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.0.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href="https://github.com/input-output-hk/mithril/issues/512" target="_blank" rel="noopener noreferrer">#512</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-05-31-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-31-consensus"/>
+        <updated>2023-05-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network's ledger-peer selection (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101" target="_blank" rel="noopener noreferrer">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-05-31-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-31-performance-and-tracing"/>
+        <updated>2023-05-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We've discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build
+configuration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive
+to benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile
+we'd expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way
+shorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great
+support when evaluating different compiler versions or RTS flags incrementally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various
+logging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to
+directly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We're currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with
+job definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing
+benchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible
+and offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate
+very specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-05-26-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-26-goedel"/>
+        <updated>2023-05-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-05-26-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-26-hydra"/>
+        <updated>2023-05-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their
+monthly review meeting and drafted the report for May. They made progress on
+implementing the first end-to-end journey for external commits using "Option A"
+for normal UTxOs, while still considering "Option B". The team also integrated a
+Spanish translation contributed by the community, created micro-benchmarks for
+transaction validation and deserialization, and made improvements to
+hydra-node's version reporting. Last but not least, they implemented the ability
+to commit multiple UTxOs to a head at once.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting (<a href="https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view" target="_blank" rel="noopener noreferrer">recording</a> + <a href="https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA" target="_blank" rel="noopener noreferrer">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->
+for normal UTxOs <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href="https://github.com/input-output-hk/hydra/pull/884" target="_blank" rel="noopener noreferrer">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href="https://github.com/input-output-hk/hydra/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete external commits with script UTxOs <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-05-26-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-26-ledger"/>
+        <updated>2023-05-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation
+of the new certificates is near complete, we refactored some of our data structures
+to be able to support DReps, we cleaned up the serialization format, and renamed things to make
+clearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.
+And, as always, we continue to address technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3408" target="_blank" rel="noopener noreferrer">pull-3408</a> - Improve conway delegation certificates</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3428" target="_blank" rel="noopener noreferrer">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3426" target="_blank" rel="noopener noreferrer">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3425" target="_blank" rel="noopener noreferrer">pull-3425</a> - Improve witness logic needed for conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3423" target="_blank" rel="noopener noreferrer">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3421" target="_blank" rel="noopener noreferrer">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3454" target="_blank" rel="noopener noreferrer">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improve-testing">Improve testing<a class="hash-link" href="#improve-testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3403" target="_blank" rel="noopener noreferrer">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3410" target="_blank" rel="noopener noreferrer">pull-3410</a> - Update chaps index</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3416" target="_blank" rel="noopener noreferrer">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3414" target="_blank" rel="noopener noreferrer">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3420" target="_blank" rel="noopener noreferrer">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3441" target="_blank" rel="noopener noreferrer">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3409" target="_blank" rel="noopener noreferrer">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3407" target="_blank" rel="noopener noreferrer">pull-3407</a> -  Fixup release process documentation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3404" target="_blank" rel="noopener noreferrer">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3402" target="_blank" rel="noopener noreferrer">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3424" target="_blank" rel="noopener noreferrer">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3432" target="_blank" rel="noopener noreferrer">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3440" target="_blank" rel="noopener noreferrer">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-05-26-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-26-network"/>
+        <updated>2023-05-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug
+when using DNS names in local root peers.  We continued working on engineering
+blog post about P2P. We released a new version of packages for
+<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks
+if <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><ul><li>Eclipse evasion: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a></li><li>Local root peers bug fix: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">#4559</a></li><li>Release to CHaP: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li><li>CI improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">#4572</a></li><li>Release script improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-05-24-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-24-node-cli-api"/>
+        <updated>2023-05-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-05-24 - 2023-06-06</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href="https://github.com/input-output-hk/fusion-flamingo" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5290" target="_blank" rel="noopener noreferrer">Update <code>cardano-cli</code> changelog</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5197" target="_blank" rel="noopener noreferrer">Propagate protocol parameters conversion errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5149" target="_blank" rel="noopener noreferrer">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/31" target="_blank" rel="noopener noreferrer">Switch to <code>tasty-discover</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/30" target="_blank" rel="noopener noreferrer">Move tests to standard locations</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/26" target="_blank" rel="noopener noreferrer">Make cardano-api:internal component public</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/24" target="_blank" rel="noopener noreferrer">update chaps index</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/18" target="_blank" rel="noopener noreferrer">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/17" target="_blank" rel="noopener noreferrer">Expose toAlonzoCostModels</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/9" target="_blank" rel="noopener noreferrer">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/32" target="_blank" rel="noopener noreferrer">Check changelog in tag script</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/34" target="_blank" rel="noopener noreferrer">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/38" target="_blank" rel="noopener noreferrer">Use .x suffix for release branches</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5291" target="_blank" rel="noopener noreferrer">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5284" target="_blank" rel="noopener noreferrer">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5243" target="_blank" rel="noopener noreferrer">update chaps &amp; integration</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5240" target="_blank" rel="noopener noreferrer">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-05-19-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-19-hydra"/>
+        <updated>2023-05-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the "Coding Standards" for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href="https://github.com/input-output-hk/hydra/pull/863" target="_blank" rel="noopener noreferrer">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href="https://github.com/input-output-hk/hydra/pull/877" target="_blank" rel="noopener noreferrer">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href="https://github.com/input-output-hk/hydra/pull/867" target="_blank" rel="noopener noreferrer">#867</a>.</li><li>Updated our <a href="https://github.com/input-output-hk/hydra/wiki/Coding-Standards" target="_blank" rel="noopener noreferrer">Coding Standards</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing "Option A" <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Integrate spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a>.</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-05-17-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-17-consensus"/>
+        <updated>2023-05-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/89" target="_blank" rel="noopener noreferrer">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it's similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we've re-introduced the Genesis State Machine.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-05-17-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-17-mithril"/>
+        <updated>2023-05-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2318.0" target="_blank" rel="noopener noreferrer"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href="https://github.com/input-output-hk/mithril/issues/907" target="_blank" rel="noopener noreferrer">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href="https://github.com/input-output-hk/mithril/issues/869" target="_blank" rel="noopener noreferrer">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href="https://github.com/input-output-hk/mithril/issues/888" target="_blank" rel="noopener noreferrer">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href="https://github.com/input-output-hk/mithril/issues/893" target="_blank" rel="noopener noreferrer">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href="https://github.com/input-output-hk/mithril/issues/919" target="_blank" rel="noopener noreferrer">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-05-17-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-17-performance-and-tracing"/>
+        <updated>2023-05-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We're preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we're porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we're busy with the handover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>'s default build environment is around the corner, we're setting up our benchmarking cluster to
+handle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This
+also involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we've been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,
+we strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to
+be balanced against resource demand for all our cluster's nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>For our new tracing system, we're currently validating the behaviour of the system after optimizations have been applied. Furthermore, some
+quality-of-life details that have changed required us to revision the system documentation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis">Analysis<a class="hash-link" href="#analysis" title="Direct link to heading">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been
+normally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a
+huge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking
+copmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we've been adjusting
+those profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality
+of the nomad cloud backend.  </p><p>Additionally, we're porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance--tracing-meetup">Performance &amp; Tracing Meetup<a class="hash-link" href="#performance--tracing-meetup" title="Direct link to heading">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive
+days together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.
+Also, it was a great opportunity to finally meet in person.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offboarding">Offboarding<a class="hash-link" href="#offboarding" title="Direct link to heading">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he's handing over all his obligations, which requires reorganisation
+of team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-05-12-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-12-crypto"/>
+        <updated>2023-05-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream's macros to merge these curves in halo2curves.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href="https://github.com/input-output-hk/cardano-base/pull/408" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href="https://github.com/input-output-hk/cardano-base/pull/405" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href="https://github.com/privacy-scaling-explorations/halo2curves/pull/38" target="_blank" rel="noopener noreferrer">#38</a></li><li>Addition constraint over JubJub merged <a href="https://github.com/input-output-hk/sidechains-zk/pull/10" target="_blank" rel="noopener noreferrer">#10</a></li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-05-12-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-12-goedel"/>
+        <updated>2023-05-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023
+(<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon
+on 19th June 2023. The papers will be published in EPTCS.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-05-12-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-12-hydra"/>
+        <updated>2023-05-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release
+of the first mainnet compatible version. Besides this they also addressed
+inconsistencies in rollback handling, added an architecture page to the website,
+reducing the size of logs using event IDs. They also had productive discussions
+with researchers on plans for incremental commits/decommits and had a whiteboard
+session on DeFi and lending protocols. The goals for next week include
+completing the validation of the timed transactions feature, exploring stateless
+observation, refining the Hydra explorer ticket, writing ops instructions and
+troubleshooting, and implementing the first end-to-end journey for external
+commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released first mainnnet compatible version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Added <a href="https://hydra.family/head-protocol/core-concepts/architecture/" target="_blank" rel="noopener noreferrer">architecture page</a> and fixed haddock links on our website <a href="https://github.com/input-output-hk/hydra/pull/838" target="_blank" rel="noopener noreferrer">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href="https://github.com/input-output-hk/hydra/pull/859" target="_blank" rel="noopener noreferrer">#859</a></li><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-04" target="_blank" rel="noopener noreferrer">monthly report for April</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-05-12-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-12-network"/>
+        <updated>2023-05-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see
+below).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to
+Handshake contributed by Galois Inc.  We made improvements to our tests (fixed
+a flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and
+<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of
+releasing new package version to <code>CHaP</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers
+(currently operated by IOG, in future also CF and Emurgo).  We designed
+a switch to use ledger peers if the node tip is close enough to the current
+time.  For more details see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query
+server's <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to
+Galois Inc. for implementing it, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4256" target="_blank" rel="noopener noreferrer">#4256</a> and <a href="https://github.com/input-output-hk/ouroboros-network/issues/4538" target="_blank" rel="noopener noreferrer">#4538</a>.  We published new version
+of packages to CHaP <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/253" target="_blank" rel="noopener noreferrer">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will
+not duplicate diffusion errors messages in the log, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4515" target="_blank" rel="noopener noreferrer">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4540" target="_blank" rel="noopener noreferrer">#4540</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4544" target="_blank" rel="noopener noreferrer">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we
+released all the package necessary to build the newest set of packages,
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn't log
+<code>ExitSuccess</code> exceptions, <a href="https://github.com/input-output-hk/ouroboros-consensus/pulls/71" target="_blank" rel="noopener noreferrer">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4395" target="_blank" rel="noopener noreferrer">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">#4539</a>: we don't need to install cryptographic libraries in CI;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4545" target="_blank" rel="noopener noreferrer">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved
+to a new repo;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4546" target="_blank" rel="noopener noreferrer">#4546</a>: we switched to use <a href="https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue" target="_blank" rel="noopener noreferrer">GitHub merge queues</a>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-05-05-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-05-ledger"/>
+        <updated>2023-05-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.
+For conway, we completed a large structural change that now allows
+for delegation certificates to be parameterized by era, and introducing
+new certificates for the first time since Shelley.
+We also continue to build out our contraint based generators that we will
+use to property test the conway era.
+In particular, we can now generate an entire ledger state and a
+transaction which is balanced with respect to the ledger state.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="conway-certificates">Conway certificates<a class="hash-link" href="#conway-certificates" title="Direct link to heading">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.
+Moreover, there are new certificates in the Conway era to support CIP-1694,
+and MIR certificates have been removed.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3387" target="_blank" rel="noopener noreferrer">pull-3387</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,
+but instead generate ledger states and transactions based on constraints.
+We hit a milestone this week, namely the ability to generate a balanced transaction in the context
+of a ledger state, all based on our ever growing constaint language.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3386" target="_blank" rel="noopener noreferrer">pull-3386</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3393" target="_blank" rel="noopener noreferrer">pull-3393</a> - Performance improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3395" target="_blank" rel="noopener noreferrer">pull-3395</a> - Conway instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3398" target="_blank" rel="noopener noreferrer">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3389" target="_blank" rel="noopener noreferrer">pull-3389</a> - Reduce github pages size</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3390" target="_blank" rel="noopener noreferrer">pull-3390</a> - Reinstate the tickf optimizations</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-05-05-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-05-node-cli-api"/>
+        <updated>2023-05-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-05-05 - 2023-05-23</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5181" target="_blank" rel="noopener noreferrer">Update libsodium installation instructions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5264" target="_blank" rel="noopener noreferrer">Delete deprecated <code>shelley</code> command group</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5206" target="_blank" rel="noopener noreferrer">Add golden tests for CLI help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5201" target="_blank" rel="noopener noreferrer">Avoid bare IO in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5200" target="_blank" rel="noopener noreferrer">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5198" target="_blank" rel="noopener noreferrer">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5189" target="_blank" rel="noopener noreferrer">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5184" target="_blank" rel="noopener noreferrer">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5120" target="_blank" rel="noopener noreferrer">Simplify socket path code</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5221" target="_blank" rel="noopener noreferrer">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5218" target="_blank" rel="noopener noreferrer">Implement deposit handling when balancing transactions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5217" target="_blank" rel="noopener noreferrer">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5215" target="_blank" rel="noopener noreferrer">Cleanup socket file path code</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5207" target="_blank" rel="noopener noreferrer">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5194" target="_blank" rel="noopener noreferrer">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5191" target="_blank" rel="noopener noreferrer">Expose config reader</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5188" target="_blank" rel="noopener noreferrer">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5175" target="_blank" rel="noopener noreferrer">Fix <code>toEraInMode</code> for conway</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5168" target="_blank" rel="noopener noreferrer">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5096" target="_blank" rel="noopener noreferrer">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5047" target="_blank" rel="noopener noreferrer">Use cardano-api from separate repository</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4684" target="_blank" rel="noopener noreferrer">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5022" target="_blank" rel="noopener noreferrer">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5254" target="_blank" rel="noopener noreferrer">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5242" target="_blank" rel="noopener noreferrer">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5234" target="_blank" rel="noopener noreferrer">Fix cardano-testnet help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5211" target="_blank" rel="noopener noreferrer">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5165" target="_blank" rel="noopener noreferrer">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5128" target="_blank" rel="noopener noreferrer">Create defaultYamlValue for cardano-testnet</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-05-04-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-04-mithril"/>
+        <updated>2023-05-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/870" target="_blank" rel="noopener noreferrer">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/852" target="_blank" rel="noopener noreferrer">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/871" target="_blank" rel="noopener noreferrer">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/853" target="_blank" rel="noopener noreferrer">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href="https://github.com/input-output-hk/mithril/issues/868" target="_blank" rel="noopener noreferrer">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href="https://github.com/input-output-hk/mithril/issues/878" target="_blank" rel="noopener noreferrer">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/643" target="_blank" rel="noopener noreferrer">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href="https://github.com/input-output-hk/mithril/issues/881" target="_blank" rel="noopener noreferrer">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href="https://github.com/input-output-hk/mithril/issues/873" target="_blank" rel="noopener noreferrer">#873</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-05-03-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-03-consensus"/>
+        <updated>2023-05-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.
+It seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this
+needs to be confirmed. We started a DoS mitigation handbook and updated our
+conceptual component diagram to guide the Genesis design. We engaged with the
+IOG researchers to work on the Limit on Patience attack vector, work in this
+area is still ongoing. We sketched a design to decouple the CPU load of the node
+from its responsiveness to the socket. Finally, we discussed with Networking our
+approach to lower the performance impact of the BlockFetch decision logic, and
+got green light from them.</p><p>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new
+repository</a>, splitting
+it from the <code>ouroboros-network</code> repository, and released version 0.6 of
+Consensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an
+explanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code
+comments that emphasize certain properties of the decisions the <code>BlockFetch</code>
+logic makes that are helping us confirm that Genesis does not require any
+changes to <code>BlockFetch</code>. We are waiting on input from our former system
+architect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>
+repository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a
+way to address the concern that the Limit on Patiente (LoP) attack vector duty
+cycle is indeed low, but it's still non-trivial to ultimately conclude it's
+sufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its
+responsiveness to the socket, since the LoP is a relatively tight timeout, and
+node performance bugs inducing seconds-worth of latency are unfortunately
+familiar phenomena.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/62" target="_blank" rel="noopener noreferrer">added an
+explanation</a> of
+a question that we had to explain many times about the exact behavior of the
+hardfork combinator forecast horizon.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-05-03-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-03-performance-and-tracing"/>
+        <updated>2023-05-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* Benchmarking: The benchmarks and performance investigations for the new 8.0 release branch are ongoing.]]></summary>
+        <content type="html"><![CDATA[<ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,
+we created yet another local reproduction with the workbench's <code>forge-stress</code> benchmark.  </p><p>Currently we're working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and
+subsequent releases.  </p><p>Additionally, we've refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally
+intended to run on a performance-critical codepath. We've worked on improving those, as well as eliminating cases of redundant
+conversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dataflow-documentation">Dataflow documentation<a class="hash-link" href="#dataflow-documentation" title="Direct link to heading">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate
+further development, we're creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="remove-redundant-plutus-flake-input">Remove redundant Plutus flake input<a class="hash-link" href="#remove-redundant-plutus-flake-input" title="Direct link to heading">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,
+we simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.
+This capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along
+with various quality-of-life improvements, has been merged to <code>master</code>.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-05-01-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-05-01-db-sync"/>
+        <updated>2023-05-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1389" target="_blank" rel="noopener noreferrer">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1382" target="_blank" rel="noopener noreferrer">#1382</a></li><li>Using the cache in more places to reduce recourses usage
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1396" target="_blank" rel="noopener noreferrer">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1398" target="_blank" rel="noopener noreferrer">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-04-28-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-28-crypto"/>
+        <updated>2023-04-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto's library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href="https://github.com/input-output-hk/cardano-base/pull/384" target="_blank" rel="noopener noreferrer">#384</a></li><li>Open PR for including test vectors created with <a href="https://github.com/zkcrypto/bls12_381" target="_blank" rel="noopener noreferrer">zkscrypto</a>'s library, <a href="https://github.com/input-output-hk/cardano-base/pull/397" target="_blank" rel="noopener noreferrer">PR#397</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href="https://github.com/input-output-hk/cardano-base/pull/388" target="_blank" rel="noopener noreferrer">PR#388</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE's repo</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-04-28-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-28-goedel"/>
+        <updated>2023-04-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros
+Praos to a newer foundation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-04-28-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-28-network"/>
+        <updated>2023-04-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href="https://hackage.haskell.org/package/io-classes" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>,</li><li><a href="https://hackage.haskell.org/package/io-classes-mtl" target="_blank" rel="noopener noreferrer"><code>io-classes-mtl</code></a></li><li><a href="https://hackage.haskell.org/package/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-stm" target="_blank" rel="noopener noreferrer"><code>strict-stm</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-mvar" target="_blank" rel="noopener noreferrer"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href="https://engineering.iog.io/2023-04-14-io-sim-annoucement" target="_blank" rel="noopener noreferrer">blog post</a>.  We made progress
+also on another blog post which will describes the design of the P2P networking
+layer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made
+<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of
+<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros-Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4281" target="_blank" rel="noopener noreferrer">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4527" target="_blank" rel="noopener noreferrer">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4532" target="_blank" rel="noopener noreferrer">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>
+support), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</li><li>Renamed a module: <a href="https://github.com/input-output-hk/io-sim/pull/88" target="_blank" rel="noopener noreferrer">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/io-sim/pull/83" target="_blank" rel="noopener noreferrer">io-sim#83</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:
+<a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/227" target="_blank" rel="noopener noreferrer">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/29" target="_blank" rel="noopener noreferrer">typed-protocols#29</a>.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-04-27-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-27-hydra"/>
+        <updated>2023-04-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the
+report which likely is published next week. They put the spec into the
+repository and website, addressed a user issue and fixed the TUI peer list.
+Furthermore, they updated dependencies, conducted a Twitter space on Auctions
+use cases, covered the rollback bug with tests and implemented a solution.
+Looking ahead, their goals for next week include releasing 0.10.0, implementing
+timed transactions support, writing a Query API ADR, and grooming work items
+like off-chain benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository
+<a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and published on
+<a href="https://hydra.family/head-protocol/unstable/core-concepts/specification" target="_blank" rel="noopener noreferrer">the
+website</a></li><li>Groom and addressed user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href="https://github.com/input-output-hk/hydra/issues/832" target="_blank" rel="noopener noreferrer">#832</a></li><li>Groom off-chain benchmarks idea <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-04-21-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-21-hydra"/>
+        <updated>2023-04-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state
+machine continuity on-chain, discussing voting project solutions, exploring
+adding Hydra support to kupo, and improving API navigation with a sidebar. The
+team also updated dependencies and fixed issues in their test suites. Moving
+forward, the team plans to hold the next monthly review meeting, address a user
+issue, prepare for the 0.10.0 release, and work on a dirt road fix for the
+rollbacks issue with proper test coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href="https://github.com/input-output-hk/hydra/pull/777" target="_blank" rel="noopener noreferrer">#777</a>.</li><li>Took part in a twitter space on <a href="https://twitter.com/thepizzaknight_/status/1647833904282320896" target="_blank" rel="noopener noreferrer">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href="https://hydra.family/head-protocol/unstable/api-reference/" target="_blank" rel="noopener noreferrer">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting (join via <a href="https://discord.gg/inputoutput?event=1097863746216538194" target="_blank" rel="noopener noreferrer">Discord</a> or <a href="https://www.addevent.com/event/ck16794110" target="_blank" rel="noopener noreferrer">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a>.</li><li>Put the spec into the repo <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and prepare release 0.10.0.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-04-21-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-21-ledger"/>
+        <updated>2023-04-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.
+In particular, the conway era now supports Plutus V3.
+Finally, we made small improvements to the ledger API and now host
+our Haskell code documentation (haddocks) on github pages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3365" target="_blank" rel="noopener noreferrer">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3368" target="_blank" rel="noopener noreferrer">pull-3368</a>] - Conway genesis fix.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3369" target="_blank" rel="noopener noreferrer">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3372" target="_blank" rel="noopener noreferrer">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3384" target="_blank" rel="noopener noreferrer">pull-3384</a>] - Rename.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haddocks-hosted-on-github-pages">Haddocks hosted on github pages<a class="hash-link" href="#haddocks-hosted-on-github-pages" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3385" target="_blank" rel="noopener noreferrer">pull-3385</a>] </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-improvements-to-the-api">Small improvements to the API<a class="hash-link" href="#small-improvements-to-the-api" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3366" target="_blank" rel="noopener noreferrer">pull-3366</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3367" target="_blank" rel="noopener noreferrer">pull-3367</a>] Fix cost model json instances.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3371" target="_blank" rel="noopener noreferrer">pull-3371</a>] UMap cleanup.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3373" target="_blank" rel="noopener noreferrer">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3375" target="_blank" rel="noopener noreferrer">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3377" target="_blank" rel="noopener noreferrer">pull-3377</a>] Fix cabal warnings.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3383" target="_blank" rel="noopener noreferrer">pull-3383</a>] Fix multi-asset test.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-04-20-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-20-mithril"/>
+        <updated>2023-04-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href="https://github.com/input-output-hk/mithril/issues/816" target="_blank" rel="noopener noreferrer">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href="https://github.com/input-output-hk/mithril/issues/814" target="_blank" rel="noopener noreferrer">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href="https://github.com/input-output-hk/mithril/issues/829" target="_blank" rel="noopener noreferrer">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href="https://github.com/input-output-hk/mithril/issues/847" target="_blank" rel="noopener noreferrer">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href="https://github.com/input-output-hk/mithril/issues/848" target="_blank" rel="noopener noreferrer">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-04-20-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-20-node-cli-api"/>
+        <updated>2023-04-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-04-20 - 2023-05-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5136" target="_blank" rel="noopener noreferrer">Modify golden test functions to automatically create parent directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5132" target="_blank" rel="noopener noreferrer">SPO on-chain poll commands adjustments</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5119" target="_blank" rel="noopener noreferrer">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5172" target="_blank" rel="noopener noreferrer"><code>--out-file</code> option for governance commands</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5130" target="_blank" rel="noopener noreferrer">UTC Time to slots conversion function</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5157" target="_blank" rel="noopener noreferrer">Update CHaP to get latest ledger with performance fix</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4854" target="_blank" rel="noopener noreferrer">Integration with Peer Sharing</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-04-19-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-19-consensus"/>
+        <updated>2023-04-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism
+for UTxO-HD, and modifications to the mempool benchmarks that this prototype
+requires.</p><p>On the Genesis front we validated that the fragment size calculation in
+<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it
+we will get performance that is acceptably close to that of the baseline. We
+also started investigating a performance fix that does not alter the existing
+baseline behavior too much. In addition we reviewed our Genesis attack vector
+calculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving
+our release process, to support the Cardano-wide efforts in this area. We also
+performed an analysis on the number of file descriptors that consensus use. This
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-04-19-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-19-performance-and-tracing"/>
+        <updated>2023-04-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* Benchmarking: We performed a series of benchmarks aimed at the new 8.0 release branch and built a timeline from the 1.35 releases to that branch.]]></summary>
+        <content type="html"><![CDATA[<ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We're working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we've laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the
+<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial
+in locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of
+benchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still
+ongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we're working with the implementation
+of data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational
+burden inside the node needs to be kept to an absolute minimum. We're currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer
+feature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-manifest">Detailed manifest<a class="hash-link" href="#detailed-manifest" title="Direct link to heading">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.
+These dependencies come from different package sources, have different versioning policies, and an identical package version might provide different
+performance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated
+by making all component bumps visible and accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-profiling-inside-workbench">GHC profiling inside workbench<a class="hash-link" href="#ghc-profiling-inside-workbench" title="Direct link to heading">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of
+profiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already
+been merged to <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.
+This results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Incident Report]]></title>
+        <id>2023-04-17-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-17-ledger"/>
+        <updated>2023-04-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Incident reporting: Cardano block production temporary outage]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="incident-reporting-cardano-block-production-temporary-outage">Incident reporting: Cardano block production temporary outage<a class="hash-link" href="#incident-reporting-cardano-block-production-temporary-outage" title="Direct link to heading">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.
+The investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.
+Following successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.
+With the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="further-details">Further Details<a class="hash-link" href="#further-details" title="Direct link to heading">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href="https://www.314pool.com/post/cardano-post-mortem-1" target="_blank" rel="noopener noreferrer">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p>]]></content>
+        <author>
+            <name>Kevin Hammond</name>
+            <uri>https://github.com/kevinhammond</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-04-14-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-14-goedel"/>
+        <updated>2023-04-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has submitted two papers for publication, carried
+out consultancy with other teams and has an opening for an intern.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-04-14-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-14-hydra"/>
+        <updated>2023-04-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer
+tooling, and improving the API for voting use cases. They reviewed progress on
+auction, payments, and voting projects and made worked on reproducing a bug with
+handling rollbacks. Moving forward, the team plans to update dependencies,
+implement a dirt road fix for the rollbacks bug, and explore adding Hydra
+support to kupo.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node
+used in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href="https://github.com/input-output-hk/hydra/pull/808" target="_blank" rel="noopener noreferrer">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href="https://github.com/input-output-hk/hydra/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-04-07-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-07-hydra"/>
+        <updated>2023-04-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published the monthly report for March, created
+separate links for different versions of documentation, and clarified potential
+solutions for the Rollbacks bug. The team also discussed Query API requests for
+the Hydra Voting project and met with community members to answer questions
+about Hydra. Moving forward, the team plans to integrate the specification into
+the repository, implement a short-term fix for the Rollbacks issue, and draft a
+Query API ADR.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published monthly reports on <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href="https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">released</a> vs. <a href="https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-04-06-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-06-mithril"/>
+        <updated>2023-04-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href="https://github.com/input-output-hk/mithril/issues/817" target="_blank" rel="noopener noreferrer">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href="https://github.com/input-output-hk/mithril/issues/827" target="_blank" rel="noopener noreferrer">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href="https://github.com/input-output-hk/mithril/issues/828" target="_blank" rel="noopener noreferrer">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/824" target="_blank" rel="noopener noreferrer">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href="https://github.com/input-output-hk/mithril/issues/843" target="_blank" rel="noopener noreferrer">#843</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-04-05-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-05-consensus"/>
+        <updated>2023-04-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are
+now working on improving the DB lock mechanism to improve performance. We also
+introduced several improvements to the file system abstraction and simulation
+layer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and
+<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,
+soliciting feedback from Networking Team and IOG Researchers. We also opened up
+a PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being
+reviewed.</p><p>On the support front, we got a new Consensus version that can use different
+fundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was
+discovered by our <code>QuickCheck</code> property tests.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-04-05-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-05-node-cli-api"/>
+        <updated>2023-04-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-04-05 - 2023-04-19</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5112" target="_blank" rel="noopener noreferrer">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5061" target="_blank" rel="noopener noreferrer">Remove --stake-address option from stake-address build</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5059" target="_blank" rel="noopener noreferrer">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5053" target="_blank" rel="noopener noreferrer">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5046" target="_blank" rel="noopener noreferrer">Move parsers to reusable location</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --socket-path cli option</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5108" target="_blank" rel="noopener noreferrer">CIP-1694 make space for DRep certificates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5105" target="_blank" rel="noopener noreferrer">File type to track the content and direction of files</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5087" target="_blank" rel="noopener noreferrer">Fix import warning</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5086" target="_blank" rel="noopener noreferrer">Expose UsingRawBytes et al types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5085" target="_blank" rel="noopener noreferrer">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5072" target="_blank" rel="noopener noreferrer">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5071" target="_blank" rel="noopener noreferrer">New genCardanoKeyWitness function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5069" target="_blank" rel="noopener noreferrer">Replace roundtripCBOR with trippingCbor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5064" target="_blank" rel="noopener noreferrer">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5063" target="_blank" rel="noopener noreferrer">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5057" target="_blank" rel="noopener noreferrer">Define Functor instance for FileError</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5049" target="_blank" rel="noopener noreferrer">Split serialisation from IO</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5115" target="_blank" rel="noopener noreferrer">Master build failure fixes</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5106" target="_blank" rel="noopener noreferrer">Allow renamed fields to exist if values the same</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5091" target="_blank" rel="noopener noreferrer">workbench: updates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5084" target="_blank" rel="noopener noreferrer">Delete duplicate packages sort packages and imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5110" target="_blank" rel="noopener noreferrer">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5099" target="_blank" rel="noopener noreferrer">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5083" target="_blank" rel="noopener noreferrer">Ergonomic directory creation code in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5036" target="_blank" rel="noopener noreferrer">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">Integrate latest ledger dependencies</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-04-05-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-04-05-performance-and-tracing"/>
+        <updated>2023-04-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* Benchmarking: We worked on adjusting our infrastructure to the new 8.0 release branch and performed a (very) early run.]]></summary>
+        <content type="html"><![CDATA[<ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We're profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>
+helped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very
+detailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing
+the highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we've worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions
+for tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance
+analysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we've created a profile family for the workbench that's specifically aimed at measuring and comparing tracing system configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-library">Plutus library<a class="hash-link" href="#plutus-library" title="Direct link to heading">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.
+This will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.
+It is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is
+being improved to minimize any friction for the backend user.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-03-31-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-31-crypto"/>
+        <updated>2023-03-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381's PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch merged <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a" target="_blank" rel="noopener noreferrer">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f" target="_blank" rel="noopener noreferrer">JubJub</a> to our branch of halo2curves </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Minor reorg <a href="https://github.com/input-output-hk/musig2/pull/42" target="_blank" rel="noopener noreferrer">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">PR#</a></li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-03-31-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-31-goedel"/>
+        <updated>2023-03-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final drafts of two papers
+for internal review and planning next steps of analysis of consensus
+design refiniments.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for
+distributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-03-31-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-31-hydra"/>
+        <updated>2023-03-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The
+semi-automated smoke tests and some missing documentation is still preventing
+from calling that fully done. They fixed smaller issues and made a step in the
+Head protocol more robust. Besides development, they met with interested people
+from the community who want to get started collaborating on communication and
+marketing materials.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href="https://github.com/input-output-hk/hydra/issues/560" target="_blank" rel="noopener noreferrer">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Completed configurable API feature <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-03-31-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-31-ledger"/>
+        <updated>2023-03-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We are still heavily involved in work related to preparing the next release.
+The other main thing we have worked on is experimentation about how we will
+handle the DRep stake distribution for CIP-1694 in the conway ledger era.
+Lastly, we merged a fix for
+<a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>
+into our main branch (there will be a post-mortem shortly).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support-for-the-next-release">Support for the next release<a class="hash-link" href="#support-for-the-next-release" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a> - Added helper functions for the CLI.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="experiments-for-drep-stake-distribution">Experiments for DRep stake distribution<a class="hash-link" href="#experiments-for-drep-stake-distribution" title="Direct link to heading">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.
+We would like to be able to use the current stake distribution at the epoch boundary
+for DRep voting so that people can always vote themselves in time for any proposal.
+To this end, we have a prototype of an incremental computation based on the incremental
+lambda calculus, together with tests and benchmarks (which are very promising).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate
+the new incremental computations.
+We have two draft PRs up for possibles solution.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-and-bug-fixes">Technical debt and bug fixes<a class="hash-link" href="#technical-debt-and-bug-fixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a> - A fix <a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a> - Removal of code duplication.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="documentation-changes">Documentation changes<a class="hash-link" href="#documentation-changes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a> - Rename "optional datums" with "supplemental datums" in the alonzo spec.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[System Test Team Update]]></title>
+        <id>2023-03-27-system-test</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-27-system-test"/>
+        <updated>2023-03-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html" target="_blank" rel="noopener noreferrer">1.35.5</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html" target="_blank" rel="noopener noreferrer">1.35.6</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>]]></content>
+        <author>
+            <name>Martin Kourim</name>
+            <uri>https://github.com/mkoura</uri>
+        </author>
+        <category label="system-test" term="system-test"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-03-24-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-24-hydra"/>
+        <updated>2023-03-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review
+meeting for March. They demonstrated a Hydra Head on mainnet, which was running
+the hydraw demo application. While this marks an important milestone, they also
+emphasized that more features are still to be added as needed for applications
+to run on Hydra. Besides this, the roadmap is getting cleaned up to encourage
+discussions and provide more space for user requests.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting <a href="https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392" target="_blank" rel="noopener noreferrer">slides</a>/<a href="https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c" target="_blank" rel="noopener noreferrer">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a> and investigated a potential bug in rollback handling <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-03-23-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-23-db-sync"/>
+        <updated>2023-03-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on
+technical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an
+epoch, but also the first epoch of the last epoch.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1367" target="_blank" rel="noopener noreferrer">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn't rollback and caused wrong values
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1370" target="_blank" rel="noopener noreferrer">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even
+though it was never used. Also refactored the no ledger part of the codebase.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1378" target="_blank" rel="noopener noreferrer">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or
+disables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync
+mainnet in hours.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1379" target="_blank" rel="noopener noreferrer">#1379</a></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-03-23-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-23-mithril"/>
+        <updated>2023-03-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2310.0" target="_blank" rel="noopener noreferrer"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the creation of a stake distribution service <a href="https://github.com/input-output-hk/mithril/issues/799" target="_blank" rel="noopener noreferrer">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href="https://github.com/input-output-hk/mithril/issues/810" target="_blank" rel="noopener noreferrer">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href="https://github.com/input-output-hk/mithril/issues/804" target="_blank" rel="noopener noreferrer">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href="https://github.com/input-output-hk/mithril/issues/807" target="_blank" rel="noopener noreferrer">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href="https://github.com/input-output-hk/mithril/issues/820" target="_blank" rel="noopener noreferrer">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href="https://github.com/input-output-hk/mithril/issues/801" target="_blank" rel="noopener noreferrer">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/803" target="_blank" rel="noopener noreferrer">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/818" target="_blank" rel="noopener noreferrer">#818</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-03-22-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-22-consensus"/>
+        <updated>2023-03-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD
+prototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>
+package, which provides a file-system abstraction layer that can be used for
+testing and simulation. This makes the Consensus code base smaller, while
+providing a package that the community can reuse and contribute to. We also
+fixed a failing property test related to iterators. We are also working on
+mempool and VRF improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-details">Low-level details<a class="hash-link" href="#low-level-details" title="Direct link to heading">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4425" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/1" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/2" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4460" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href="https://github.com/input-output-hk/fs-sim/pull/5" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/6" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/7" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/8" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/20" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/150" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-03-22-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-22-node-cli-api"/>
+        <updated>2023-03-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-03-22 - 2023-04-05</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5041" target="_blank" rel="noopener noreferrer">Remove unused error constructors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5040" target="_blank" rel="noopener noreferrer">Remove use of AcquireFailure type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5038" target="_blank" rel="noopener noreferrer">Simplify implementation of executeQueryAnyMode</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5002" target="_blank" rel="noopener noreferrer">Script data serialisation</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4956" target="_blank" rel="noopener noreferrer">Guard against overflows in Shelley TxIns</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyContent and related types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5011" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test.</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-03-22-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-22-performance-and-tracing"/>
+        <updated>2023-03-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.]]></summary>
+        <content type="html"><![CDATA[<ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we're currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We're working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we're laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing">New tracing<a class="hash-link" href="#new-tracing" title="Direct link to heading">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe
+a slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-rts-parametrization">GHC RTS parametrization<a class="hash-link" href="#ghc-rts-parametrization" title="Direct link to heading">​</a></h3><p>We're currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies
+on different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we're refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we're currently undertaking an effort to multi-layered documentation: a condensed version, as well
+as a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points
+for users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we're laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will
+increase confidence in specific metrics.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis
+is patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We're confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-03-21-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-21-network"/>
+        <updated>2023-03-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P
+functionality.</p><p>We received reports from some SPOs who encountered problems with their non
+P2P block producing nodes not being able to connect to their P2P relay.  Karl
+Knutsson (from Cardano Foundation) reproduced this issue between two nodes (a
+non P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed
+it and found a bug in the legacy non p2p code.  The bug is only possible to
+trigger with a P2P node which is binding its outbound connection port to
+a fixed IP address and port (default in p2p).  A possible solution was found.
+For more information see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4465" target="_blank" rel="noopener noreferrer">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no
+longer available as a standalone binary, but instead it will become part of
+<code>cardano-cli</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger
+peers to the outbound governor, implemented tests and fixed found issues
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>).  We also made the information if a given peer plays the role of
+a big ledger peer to the mini-protocols.  This will allow to modify
+mini-protocol applications for such peers.   As part of this functionality we
+refactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see
+<a href="https://github.com/input-output-hk/io-sim/pull/73" target="_blank" rel="noopener noreferrer">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in
+<code>cardano-node</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">#4902</a>).</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-03-17-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-17-crypto"/>
+        <updated>2023-03-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381's PR approved, only blocker is Windows' CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Merged <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch approved <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. Blocker is Windown's CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href="https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md" target="_blank" rel="noopener noreferrer">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can't use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it's C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-03-17-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-17-hydra"/>
+        <updated>2023-03-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the
+hydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added
+some detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA
+per commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra
+Head on the Cardano mainnet, ideally just in time for the monthly review
+meeting. See the hydra channels on the IOG Technical Community discord server
+for details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node
+<a href="https://github.com/input-output-hk/hydra/pull/763" target="_blank" rel="noopener noreferrer">#763</a></li><li>Pay back funds to faucet after smoke-test run
+<a href="https://github.com/input-output-hk/hydra/pull/773" target="_blank" rel="noopener noreferrer">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet
+<a href="https://github.com/input-output-hk/hydra/pull/775" target="_blank" rel="noopener noreferrer">#775</a></li><li>Created golden tests to assure the script hash stays the same between
+changes <a href="https://github.com/input-output-hk/hydra/pull/772" target="_blank" rel="noopener noreferrer">#772</a></li><li>Removed hardcoded error codes in plutus scripts
+<a href="https://github.com/input-output-hk/hydra/pull/768" target="_blank" rel="noopener noreferrer">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state
+<a href="https://github.com/input-output-hk/hydra/pull/767" target="_blank" rel="noopener noreferrer">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-03-17-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-17-ledger"/>
+        <updated>2023-03-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made further progress on the conway ledger era.
+In particular, we expanded the ledger API significantly, including lots of governance features.
+We also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed
+technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-ledger-api">Expanded ledger API<a class="hash-link" href="#expanded-ledger-api" title="Direct link to heading">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-rules">Conway ledger rules<a class="hash-link" href="#conway-ledger-rules" title="Direct link to heading">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.
+Moreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="incremental-spodrep-stake-distribution-computation">Incremental SPO/DRep stake distribution computation<a class="hash-link" href="#incremental-spodrep-stake-distribution-computation" title="Direct link to heading">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus
+to maintain several of the stake distributions incrementally.
+For the per-SPO distribution, this is a performance improvement.
+For the (conway) per-DRep distribution, this is will allow those who have delegated their votes
+to a DRep to have time to react to any votes that they disapprove of.
+(Sorry, no code to share just yet, more to come.)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>Improved CBOR testing facilities <a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a></li><li>GitHub actions improvement <a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3323</a></li><li>Minor OCert improvements <a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a></li><li>Remove duplication <a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a> </li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-03-16-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-16-goedel"/>
+        <updated>2023-03-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers
+improving the deltaQ tutorial, consulting on performance design, and
+the final version of the Djed paper.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial
+improvement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation
+proofs for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-03-10-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-10-hydra"/>
+        <updated>2023-03-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a
+Hydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved
+the test suite of the <code>hydra-plutus</code> scripts. The specification is constantly
+getting improved upon reviewer feedback on overleaf - this week the graphical
+notation was refined to be more transaction-focused.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href="https://github.com/input-output-hk/hydra/issues/737" target="_blank" rel="noopener noreferrer">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href="https://github.com/input-output-hk/hydra/pull/715" target="_blank" rel="noopener noreferrer">#715</a></li><li>Improved our mutation test suite to all expected errors <a href="https://github.com/input-output-hk/hydra/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-03-09-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-09-mithril"/>
+        <updated>2023-03-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href="https://github.com/input-output-hk/mithril/issues/752" target="_blank" rel="noopener noreferrer">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href="https://github.com/input-output-hk/mithril/issues/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Worked on handling the API version with an era switch <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href="https://github.com/input-output-hk/mithril/issues/665" target="_blank" rel="noopener noreferrer">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href="https://github.com/input-output-hk/mithril/issues/769" target="_blank" rel="noopener noreferrer">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href="https://github.com/input-output-hk/mithril/issues/791" target="_blank" rel="noopener noreferrer">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-03-08-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-08-consensus"/>
+        <updated>2023-03-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD
+prototype, and introducing improvements to the <code>lmdb</code> related packages. In
+particular we identified an opportunity to gain performance by handling locks in
+a more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and
+Researchers caught. We also came op with a road map for not only testing the
+Genesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created
+component-level micro-benchmarks for adding transactions to the mempool. The
+results of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href="https://input-output-hk.github.io/ouroboros-consensus/" target="_blank" rel="noopener noreferrer">web
+page</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>
+repository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time
+GitHub actions take in <code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a
+result of the first round of sytem-level benchmarks, we identified an
+opportunity to optimise the way we handle locks to improve performance
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4393" target="_blank" rel="noopener noreferrer">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/19" target="_blank" rel="noopener noreferrer">New tests</a> for read-only transaction handles.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/18" target="_blank" rel="noopener noreferrer">New functions</a> and <a href="https://github.com/input-output-hk/lmdb-simple/pull/13" target="_blank" rel="noopener noreferrer">data types</a>.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/11" target="_blank" rel="noopener noreferrer">Updates</a> to support improved type safety and smaller constraints in
+the UTxO HD prototype.</li><li>Windows and MacOS <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">CI support</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in
+the Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early
+milestones that are applicable to today's master branch, ie tests that are
+useful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for
+the Honest leader schedule and one as-aggressive-as-possible Adversarial
+leader schedule that together satisfy the Praos properties that the Consensus
+design takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves
+differently in the baseline compared to the prototype, and we are close to
+having a full picture of how the Consensus components interact during bulk sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4400" target="_blank" rel="noopener noreferrer">created</a> component-level micro-benchmarks for adding transactions
+to the mempool. We plan on extending this to more mempool actions and different
+types of blocks. We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4422" target="_blank" rel="noopener noreferrer">store</a> the benchmark data to make it available
+to the GitHub action that <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/12" target="_blank" rel="noopener noreferrer">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4429" target="_blank" rel="noopener noreferrer">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4423" target="_blank" rel="noopener noreferrer">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus
+packages.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We finished moving the Consensus documentation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4374" target="_blank" rel="noopener noreferrer">from</a>
+<code>ouroboros-network</code> <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">to</a> <code>ouroboros-consensus</code>, in preparation for
+migrating the code to the latter repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4412" target="_blank" rel="noopener noreferrer">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4421" target="_blank" rel="noopener noreferrer">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,
+thereby reducing the time CI jobs take.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-03-08-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-08-node-cli-api"/>
+        <updated>2023-03-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-03-08 - 2023-03-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes and some refactoring </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4958" target="_blank" rel="noopener noreferrer">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5003" target="_blank" rel="noopener noreferrer">Add missing imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5001" target="_blank" rel="noopener noreferrer">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4967" target="_blank" rel="noopener noreferrer">Remove unnecessary functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4953" target="_blank" rel="noopener noreferrer">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4686" target="_blank" rel="noopener noreferrer">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4683" target="_blank" rel="noopener noreferrer">Derive Eq instance for AcquiringFailure</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4682" target="_blank" rel="noopener noreferrer">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4344" target="_blank" rel="noopener noreferrer">Remove unnecessary validation of Data</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3775" target="_blank" rel="noopener noreferrer">Remove hint of "string" support for ScriptData</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4988" target="_blank" rel="noopener noreferrer">Conway hard forks on prot-ver 9</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4968" target="_blank" rel="noopener noreferrer">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4921" target="_blank" rel="noopener noreferrer">Take all dependencies from Hackage or CHaP</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4729" target="_blank" rel="noopener noreferrer">fix cardano-testnet Babbage genesis.json</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-03-08-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-08-performance-and-tracing"/>
+        <updated>2023-03-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.]]></summary>
+        <content type="html"><![CDATA[<ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis-pipeline">Analysis pipeline<a class="hash-link" href="#analysis-pipeline" title="Direct link to heading">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better
+differentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.
+Additionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking
+data more easily accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we're currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we've begun working on a small visualization demo and interactive API documentation. Those will enable
+third parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make
+the switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-03-03-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-03-crypto"/>
+        <updated>2023-03-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Bumped to version <a href="https://crates.io/crates/kes-summed-ed25519/0.2.0" target="_blank" rel="noopener noreferrer">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href="https://github.com/input-output-hk/mithril/pull/773" target="_blank" rel="noopener noreferrer">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href="https://github.com/input-output-hk/mithril/pull/774" target="_blank" rel="noopener noreferrer">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. 	</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-03-03-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-03-goedel"/>
+        <updated>2023-03-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, improving the deltaQ tutorial, consulting on
+performance design, and the Djed paper has been accepted for
+publication.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ
+tutorial based on experience with systems that manage risk at
+multiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency
+laws for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>"Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin
+Protocol" has been accepted for publication at IEEE ICBC 2023</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-03-03-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-03-hydra"/>
+        <updated>2023-03-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version
+<a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a> - a version
+of the <code>hydra-node</code> with fully specified behavior of on-chain scripts and
+off-chain head-logic, decreased costs for opening/closing a Head and scalable
+contestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">monthly
+report</a> of the Hydra project
+and conducted a review meeting with an increasingly wider audience. The team
+plans to extend invitations through the new Hydra
+<a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> discord channel for the next
+months, stay tuned!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with report published <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">on website</a></li><li>Fixed smoke tests <a href="https://github.com/input-output-hk/hydra/pull/726" target="_blank" rel="noopener noreferrer">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href="https://github.com/input-output-hk/hydra/pull/748" target="_blank" rel="noopener noreferrer">#748</a> + head reference script <a href="https://github.com/input-output-hk/hydra/pull/701" target="_blank" rel="noopener noreferrer">#701</a>)</li><li>Released version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li><li>New discord category with <a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href="https://github.com/orgs/input-output-hk/projects/21/views/26" target="_blank" rel="noopener noreferrer">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-03-03-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-03-ledger"/>
+        <updated>2023-03-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger
+work into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-rules">Conway rules<a class="hash-link" href="#conway-rules" title="Direct link to heading">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec
+with respect to the ratification and enactment logic.</p><p>See the notes in <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a> for more details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing
+support for the main ledger properties.
+The new constraint based generators can now generate full ledger states with what is probably
+very close to the real constraints (if anything, it is under constrained).
+Next we will work on generating a transaction in the context of a ledger state, which would allow
+us to actually start using these generators for real tests.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="preparing-a-release-now-with-proper-versioning">Preparing a release, now with proper versioning<a class="hash-link" href="#preparing-a-release-now-with-proper-versioning" title="Direct link to heading">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new
+version of consensus, using CHaPs.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are
+lexicographically ordered in the Plutus script context. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation
+(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>.</li><li>We improved our nightly tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-03-02-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-03-02-network"/>
+        <updated>2023-03-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing
+forward implementation of eclipse evasion.  We also found a bug in our
+simulation testing setup (in integration of test node).  We also overviewed the
+work on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and
+<code>ouroboros-network-protocols-0.3.0.0</code> to <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/147" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to
+configure inbound connection limits, see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it's
+validation of DNS names, IP address &amp; ports when registering a stake pool
+should be more strict to protect against common mistakes which we identified on
+the chain.  See <a href="https://github.com/input-output-hk/cardano-node/issues/4929" target="_blank" rel="noopener noreferrer">issue #4929</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-work-log">Detailed work log<a class="hash-link" href="#detailed-work-log" title="Direct link to heading">​</a></h2><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> we fixed two bugs in peer state actions.  First one results in
+a busy loop if demotion from hot to warm times outs.  This busy loop is
+eventually exited when mux exits (we reported this in our previous report).
+This fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm
+-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixed a bug in a node only used in simulation which
+resulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the
+review process, we realised that the header-body split in the simulated node
+requires further work (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a>, which is under review).</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also extend our generators, which together with the above fix,
+cover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays
+similar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across
+simulated restarts) store of blocks which does chain selection.  This ensures
+that the simulated node is using <code>block-fetch</code> to download blocks announced by
+<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">PR #4019</a> - peer sharing.</p><p>We also fixed <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue #4370</a> - a connection manager test failure, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4384" target="_blank" rel="noopener noreferrer">PR #4384</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-02-24-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-24-hydra"/>
+        <updated>2023-02-24T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the
+implementation with the specification. More over, they have groomed a plan to
+make Hydra Mainnet compatible. Also, they continue moving forward with the
+internal auditing and have published some auditing guidelines to receive
+contributions from the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> (what is
+remaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec
+<a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> and drafted a
+0.10.0 version</li><li>Added a tutorial by <a href="https://github.com/perturbing/" target="_blank" rel="noopener noreferrer">@perturbing</a> to the
+website <a href="https://hydra.family/head-protocol/docs/tutorial/" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Published auditing guidelines
+<a href="https://hydra.family/head-protocol/audit-guidelines" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Made hydra-node work for macos
+<a href="https://github.com/input-output-hk/hydra/issues/746" target="_blank" rel="noopener noreferrer">#746</a> and added support
+for building on aarch64
+<a href="https://github.com/input-output-hk/hydra/issues/673" target="_blank" rel="noopener noreferrer">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul>]]></content>
+        <author>
+            <name>Franco Testagrossa</name>
+            <uri>https://github.com/ffakenz</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-02-23-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-23-mithril"/>
+        <updated>2023-02-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href="https://github.com/input-output-hk/mithril/issues/718" target="_blank" rel="noopener noreferrer">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href="https://github.com/input-output-hk/mithril/issues/738" target="_blank" rel="noopener noreferrer">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href="https://github.com/input-output-hk/mithril/issues/740" target="_blank" rel="noopener noreferrer">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href="https://github.com/input-output-hk/mithril/issues/741" target="_blank" rel="noopener noreferrer">#741</a></li><li>Completed the creation of the signer registration event <a href="https://github.com/input-output-hk/mithril/issues/742" target="_blank" rel="noopener noreferrer">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href="https://github.com/input-output-hk/mithril/issues/743" target="_blank" rel="noopener noreferrer">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href="https://github.com/input-output-hk/mithril/issues/732" target="_blank" rel="noopener noreferrer">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/755" target="_blank" rel="noopener noreferrer">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href="https://github.com/input-output-hk/mithril/issues/760" target="_blank" rel="noopener noreferrer">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href="https://github.com/input-output-hk/mithril/issues/757" target="_blank" rel="noopener noreferrer">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/730" target="_blank" rel="noopener noreferrer">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href="https://github.com/input-output-hk/mithril/issues/765" target="_blank" rel="noopener noreferrer">#765</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-02-23-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-23-performance-and-tracing"/>
+        <updated>2023-02-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[* SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.]]></summary>
+        <content type="html"><![CDATA[<ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp">SECP<a class="hash-link" href="#secp" title="Direct link to heading">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We're currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system's introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We're currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nixops-backend">NixOps backend<a class="hash-link" href="#nixops-backend" title="Direct link to heading">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-02-22-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-22-consensus"/>
+        <updated>2023-02-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks
+for UTxO HD. They showed a substantial performance regression, so we spent some
+time analyzing the results. We found out the frequency at which ledger snapshots
+were taken was too high, so we requested the benchmarking team a new run with a
+more realistic snapshotting policy. We continued refactoring and improving the
+prototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis
+design, which was well received. We continued working on testing and
+benchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work
+derived in several improvements such as better documentation, a framework for
+writing unit (and regression) tests, and the possibility of debugging
+<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and
+<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed
+to indicate a significant regression in performance. After looking into the
+benchmark logs we found that the benchmark runs took ledger state snapshots too
+often, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so
+small in the benchmark runs. Therefore, the next step is to re-run the
+benchmarks with a snapshotting policy that more closely resembles the one from
+mainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,
+<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and
+<code>cardano-lmdb-simple</code>) to <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from
+NSol. It was well received. They pointed out one blindspot, but we think it'll
+be relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis
+prototypes. I particular we tested and implemented a potential fix for
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022" target="_blank" rel="noopener noreferrer">increased ChainDB dequeue timings</a>, which partly
+behaved as we expected, but still needs further investigation. Also we obtained
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031" target="_blank" rel="noopener noreferrer">new benchmarking data</a> for the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Related to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>, we developed a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4379" target="_blank" rel="noopener noreferrer">DSL</a> for specifying
+<code>ChainDB</code> unit tests. This will allow us to better understand the
+counter-examples returned by QuickCheck tests, and to write <a href="https://github.com/input-output-hk/ouroboros-network/pull/4383" target="_blank" rel="noopener noreferrer">regression
+tests</a> for them. Also, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4358" target="_blank" rel="noopener noreferrer">added a module</a> to enable
+QuickCheck counter-examples to be run on the REPL, allowing for faster debugging
+feedback. Also, we improved the documentation related to followers
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4372" target="_blank" rel="noopener noreferrer">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the
+future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>
+0.3.0.0 to CHaP. Remember that we decided to split the packages related to
+Consensus into two bundles, one with the core functionality, Cardano-agnostic
+code, and another bundle with instantiations specific to Cardano.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-02-22-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-22-node-cli-api"/>
+        <updated>2023-02-22T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-02-22 - 2023-03-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4882" target="_blank" rel="noopener noreferrer">Fix some markdown links</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4881" target="_blank" rel="noopener noreferrer">Update changelog with PR4788 changes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4901" target="_blank" rel="noopener noreferrer">Remove pattern Tx</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4949" target="_blank" rel="noopener noreferrer">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4932" target="_blank" rel="noopener noreferrer">New build complete job</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4764" target="_blank" rel="noopener noreferrer">Update ouroboros-network</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --node-socket-path cli option</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4823" target="_blank" rel="noopener noreferrer">Straight line code for tx commands</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4655" target="_blank" rel="noopener noreferrer">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyConŻtent and related types</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4825" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops 2</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3783" target="_blank" rel="noopener noreferrer">Transaction debug script command</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-02-21-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-21-db-sync"/>
+        <updated>2023-02-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.
+We also investigated and had the first working UTxO-HD integration which is one
+of the potential future risks for db-sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn't
+use the full on disk storage but keeps things in memory and the plan is to keep
+it this way for the first iteration. The integration still has some performance
+issues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1353" target="_blank" rel="noopener noreferrer">#1353</a></li><li>Continued with ghc-9.2 integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1339" target="_blank" rel="noopener noreferrer">#1339</a></li><li>Worked on an new fixing procedure for
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1348" target="_blank" rel="noopener noreferrer">#1348</a>.
+We try to make these procedures work also on older schema version, without the
+need to migrate to newer schema, which can be very useful for fixing existing
+snapshots.</li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-02-17-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-17-crypto"/>
+        <updated>2023-02-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril's core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-02-17-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-17-goedel"/>
+        <updated>2023-02-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, distributivity properties of deltaQ, and consulting
+on performance design with the Marlowe team.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning
+paper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for
+draft paper about verifying design refinements for distributed
+system design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-02-17-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-17-hydra"/>
+        <updated>2023-02-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests
+during the contestation period. These will now always push out the deadline and
+hence contestation periods are easier to pick (depending on the network a Head
+runs on). Furthermore, they added an important acceptance test and completed
+internal refactoring of the protocol logic making future changes easier.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Push contestation deadline on each contest <a href="https://github.com/input-output-hk/hydra/pull/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> into dedicated features</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete full minting policy <a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-02-17-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-17-ledger"/>
+        <updated>2023-02-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>
+and <code>ouroboros-network</code> repositories.
+The vast majority of the effort involved all the changes to the ledger serialization libraries
+(and the interplay with <code>cardano-base</code>) which now support proper versioning.
+Supporting the conway ledger era, and in particular allowing the ledger state to transition
+to a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the
+documentation, make our testing infrastructure better (such as experimenting with better
+nightly tests), and formally specifying more parts of CIP-1694.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from
+the current ledger master. Many thanks to
+<a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer">Alexey</a> for this colossal undertaking!</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted
+in the CBOR specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by
+<code>cabal format</code> in our CI. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running
+property based tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-documentation-improvements">Small documentation improvements<a class="hash-link" href="#small-documentation-improvements" title="Direct link to heading">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the
+Shelley ledger specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="specifying-cip-1694">Specifying CIP-1694<a class="hash-link" href="#specifying-cip-1694" title="Direct link to heading">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!
+Upgrading to Agda 2.6.3 fixed our main build infrastructure problems,
+and we no longer have to rely on our custom fork. See <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/50" target="_blank" rel="noopener noreferrer">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/40" target="_blank" rel="noopener noreferrer">pull-40</a></li><li>the corresponding Haskell: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h3><p>We are still actively working on our new constraint based property testing framework.
+We have nearly all of the constraints for an entire ledger state
+hooked into generators, and tests that the generators do indeed obey the constraints.
+The variable count in the constraints is over 100!
+There is still much work to do on shrinking, making the generators faster,
+and writing actual property tests for the ledger, but the approach still seems viable and
+we are hopeful that it could replace our trace generators.
+The WIP can be followed here: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-02-17-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-17-network"/>
+        <updated>2023-02-17T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one
+fix to <code>1.35.6</code> release, another one will likely be part of next release.  The
+first one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These
+bugs could only affect nodes which are out of sync and thus should not impose
+risk on well maintained nodes on mainnet.  We also advertise to deploy at most
+one of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started
+implementing it (see <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205" target="_blank" rel="noopener noreferrer">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query
+network protocol versions (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with
+<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">* monoidal-synchronisation-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* cardano-client-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* network-mux-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-api-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-testing-0.2.0.1</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-mock-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-framework-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-0.4.0.0 (it doesn't not yet include the fix we included</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  in `0.3.0.1`)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-02-10-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-10-hydra"/>
+        <updated>2023-02-10T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts
+implementation further with the specification. This also resulted in a slight
+improvement on Hydra script size and costs. They consequently analysed the
+asymptotic complexity of collect and fanout and how they relate. Also plutus-tx
+profiling toolchain was evaluated and set up for future improvements on Hydra
+on-chain performance. In discussions with researchers and internal auditors,
+they also uncovered next steps on further securing the Head protocl using a
+"full" minting policy.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a><ul><li>Allow contest only once <a href="https://github.com/input-output-hk/hydra/pull/680" target="_blank" rel="noopener noreferrer">#680</a></li><li>Optimization through head output at index 0 <a href="https://github.com/input-output-hk/hydra/pull/700" target="_blank" rel="noopener noreferrer">#700</a></li><li>Value is preserved <a href="https://github.com/input-output-hk/hydra/pull/702" target="_blank" rel="noopener noreferrer">#702</a> + optimized exact value equality <a href="https://github.com/input-output-hk/hydra/pull/709" target="_blank" rel="noopener noreferrer">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href="https://github.com/input-output-hk/hydra/pull/721" target="_blank" rel="noopener noreferrer">#721</a><img loading="lazy" src="https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png" class="img_ev3q"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">this</a> idea ticket and <a href="https://github.com/input-output-hk/hydra/milestone/8" target="_blank" rel="noopener noreferrer">milestone</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-02-09-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril"/>
+        <updated>2023-02-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-02-08-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-08-consensus"/>
+        <updated>2023-02-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level
+benchmarks. We have created a new repository that contains the <code>anti-diff</code>
+packages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to
+audit the implementation design, and we continued working on basic tests and
+simplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR
+encoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for
+the system level benchmarks to confirm if the performance of the prototype is
+satisfactory.</p><p>We also set up a repository for the <a href="https://github.com/input-output-hk/anti-diffs" target="_blank" rel="noopener noreferrer"><code>anti-diff</code></a> package, which
+required us to refactor the code, write documentation, and prepare a release to
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4347" target="_blank" rel="noopener noreferrer">basic tests</a> for the <em>Limit on Eagerness</em> property of
+Genesis. We also introduced further robustness and simplifications in the
+Genesis Density governor. Finally, we developed a presentation to engage again
+with the researchers on our Genesis implementation design.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We are in the process of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/6" target="_blank" rel="noopener noreferrer">polishing</a> the <code>ouroboros-consensus</code>
+documentation site, which we will use a the entry point for Consensus related
+documentation. The first version will not be complete, but we plan on
+systematically improving it.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4335" target="_blank" rel="noopener noreferrer">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows
+to dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href="https://github.com/input-output-hk/ouroboros-network/pull/4339" target="_blank" rel="noopener noreferrer">another tool</a> that serves an existing immutable DB via
+BlockFetch and ChainSync. This tool can help in assisting our local benchmarking
+efforts (for instance Genesis' ChainSync jumping prototype).</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-02-08-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-08-node-cli-api"/>
+        <updated>2023-02-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-02-08 - 2023-02-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4889" target="_blank" rel="noopener noreferrer">Remove use of multiline literals</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4775" target="_blank" rel="noopener noreferrer">Markdown links CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Date ranges for copyright</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4894" target="_blank" rel="noopener noreferrer">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4885" target="_blank" rel="noopener noreferrer">Disallow empty cost model for create update proposal</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4815" target="_blank" rel="noopener noreferrer">Refactor code using onLeft and onNothing</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4876" target="_blank" rel="noopener noreferrer">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-02-08-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-08-performance-and-tracing"/>
+        <updated>2023-02-08T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we're currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we've performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we're performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we're redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>A rework of the new tracing system's internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we'll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-02-03-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-03-crypto"/>
+        <updated>2023-02-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril's core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used 'as-a-service'. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it's trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a> is finally merged, and we are ready to merge <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><p>The GitHub Action <a href="https://github.com/fernandrone/linelint" target="_blank" rel="noopener noreferrer">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Goedel Team Update]]></title>
+        <id>2023-02-03-goedel</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-03-goedel"/>
+        <updated>2023-02-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The team works on applied research and consulting in formal methods]]></summary>
+        <content type="html"><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been preparing several papers for peer review
+and knowledge sharing and consulting within IO and the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC
+2023 conference</li><li>Finished preparing and submitted a paper on performance engineering
+to an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design
+refinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul>]]></content>
+        <author>
+            <name>James Chapman</name>
+            <uri>https://github.com/jmchapman</uri>
+        </author>
+        <category label="goedel" term="goedel"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-02-03-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-03-hydra"/>
+        <updated>2023-02-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about
+rollbacks and updated graphs
+(<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>). In a next step,
+the specification will be made more approachable and an open standard. They
+improved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox
+environment and continued aligning the <code>hydra-plutus</code> scripts with the
+specification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs
+<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href="https://github.com/input-output-hk/hydra/pull/677" target="_blank" rel="noopener noreferrer">#677</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-02-02-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-02-02-ledger"/>
+        <updated>2023-02-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Much of the work the past two weeks involved integration efforts,
+cleaning up and debugging some serialization issues,
+adding tests, and work on large projects that are still ongoing.
+We also released a CIP this week that aims to make the ledger
+a registered CIP category.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-evolution-cip">Ledger evolution CIP<a class="hash-link" href="#ledger-evolution-cip" title="Direct link to heading">​</a></h3><p>We published a
+<a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP</a>
+that will make the Cardano ledger a registered category of the CIP process.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="serialization-issues">Serialization issues<a class="hash-link" href="#serialization-issues" title="Direct link to heading">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,
+but it turned out to just be particularly confusing code.
+We have now clarified the issue for the future.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tests">New tests<a class="hash-link" href="#new-tests" title="Direct link to heading">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-a-better-cost-model-serialization-situation">Progress on a better cost model serialization situation.<a class="hash-link" href="#progress-on-a-better-cost-model-serialization-situation" title="Direct link to heading">​</a></h3><p>We are still working our way through <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+Towards this end, we are now properly gating the new flexible encoders
+until version 9.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nightly-tests">Nightly tests<a class="hash-link" href="#nightly-tests" title="Direct link to heading">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.
+See the previous ledger update for more information about this project.</p>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-01-27-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-27-hydra"/>
+        <updated>2023-01-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,
+contributors and interested people from the community. The monthly repot for
+<a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a> is a digest
+of the things presented and also includes a summary of the meeting. The Hydra
+specification was getting discussed and the team is incorporating suggested
+changes of reviewers. Last but not least, they compute and publish script
+information on every PR and also on the
+<a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a>
+now.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-01-26-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-26-mithril"/>
+        <updated>2023-01-26T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href="https://github.com/input-output-hk/mithril/issues/688" target="_blank" rel="noopener noreferrer">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href="https://github.com/input-output-hk/mithril/issues/689" target="_blank" rel="noopener noreferrer">#689</a></li><li>Implement the mechanism for the signature registration <a href="https://github.com/input-output-hk/mithril/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Implement the mechanism for epoch settings <a href="https://github.com/input-output-hk/mithril/issues/695" target="_blank" rel="noopener noreferrer">#695</a></li><li>Implement the mechanism for certificate pending <a href="https://github.com/input-output-hk/mithril/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Implement the mechanism for certificate <a href="https://github.com/input-output-hk/mithril/issues/697" target="_blank" rel="noopener noreferrer">#697</a></li><li>Implement the mechanism for snapshots list <a href="https://github.com/input-output-hk/mithril/issues/698" target="_blank" rel="noopener noreferrer">#698</a></li><li>Implement the mechanism for snapshot <a href="https://github.com/input-output-hk/mithril/issues/699" target="_blank" rel="noopener noreferrer">#699</a></li><li>Update enforcement of API version with Semver <a href="https://github.com/input-output-hk/mithril/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-01-25-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-25-consensus"/>
+        <updated>2023-01-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities
+around the UTxO-HD prototype. This is a very important milestone which will
+enable us to run system-level tests and benchmarks, as well as start refactoring
+and cleaning the prototype. Regarding our Genesis workstream, we elaborated a
+roadmap that gives an indication of the remaining work. We also continued our
+work on benchmarking chain-sync-jumping. We also continued working on improving
+the way we handle blocks from the future, and advancing the integration of the
+new VRF and KES crypto.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough
+confidence that we will be able to move additional parts of the ledger state
+onto disk. We worked together with the Ledger team to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4296" target="_blank" rel="noopener noreferrer">elaborate a
+sketch</a> on how the UTxO-HD design would accommodate the migration of
+additional data from memory to disk. This gave us enough confidence that the
+current architecture will be extensible in the future.</p><p>On the testing front, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4274" target="_blank" rel="noopener noreferrer">added</a> property-based tests for the UTxO-HD
+type classes. </p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/issues/4289" target="_blank" rel="noopener noreferrer">enabled disabled components</a>, and addressed several
+technical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4269" target="_blank" rel="noopener noreferrer">#4269</a>), and integrate it
+into consensus (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4273" target="_blank" rel="noopener noreferrer">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/7" target="_blank" rel="noopener noreferrer">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We
+found a race condition in the LMDB backing store, which <a href="https://github.com/input-output-hk/ouroboros-network/pull/4283" target="_blank" rel="noopener noreferrer">we fixed</a>.
+After the fix we were able to successfully run these benchmarks. The results
+were published by <a href="https://github.com/input-output-hk/ouroboros-network/pull/4295" target="_blank" rel="noopener noreferrer">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and
+flushing values to disk. The following plot shows the duration of these disk
+operation in relation to the main ledger operations, where we can see that the
+cost of the former are comparatively low. The spike at the beginning of the
+graph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed
+to disk.</p><p><img loading="lazy" alt="UTxO-HD read and flush benchmarks" src="/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png" width="1600" height="800" class="img_ev3q"></p><p>After months of hard work adding tests for the prototype, we are ready to run
+end-to-end tests on the node, and system level benchmarks. This signals a very
+important milestone for the UTxO-HD workstream 🎉.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We elaborated a <a href="https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md" target="_blank" rel="noopener noreferrer">high-level decomposition</a> of the remaining
+work for Genesis. We also continued benchmarking the chain-sync-jumping
+happy-path.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.
+<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href="https://github.com/input-output-hk/cardano-ledger/pull/3262" target="_blank" rel="noopener noreferrer">pull
+request</a> to facilitate compiling consensus.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2023-01-25-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-25-node-cli-api"/>
+        <updated>2023-01-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2023-01-25 - 2023-02-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4853" target="_blank" rel="noopener noreferrer">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4848" target="_blank" rel="noopener noreferrer">Remove hlint from nix required CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4838" target="_blank" rel="noopener noreferrer">Remove reconfigure-hlint.sh script</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4837" target="_blank" rel="noopener noreferrer">Fix hlint warnings</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4833" target="_blank" rel="noopener noreferrer">Implement ADR-2: Restructure modules for generators</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4803" target="_blank" rel="noopener noreferrer">Stylish Haskell in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4802" target="_blank" rel="noopener noreferrer">Revert skip doc in ci</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4800" target="_blank" rel="noopener noreferrer">Skip CI on doc only changes</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4792" target="_blank" rel="noopener noreferrer">Skip CI if only changes are documentation</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4776" target="_blank" rel="noopener noreferrer">Build all of cardano-node in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4766" target="_blank" rel="noopener noreferrer">Check cabal files in CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4785" target="_blank" rel="noopener noreferrer">Straight line error handling</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4787" target="_blank" rel="noopener noreferrer">New NodeToClientVersionOf typeclass</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4832" target="_blank" rel="noopener noreferrer">Remove NoImplicitPrelude from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4809" target="_blank" rel="noopener noreferrer">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4808" target="_blank" rel="noopener noreferrer">Use hoistMaybe</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4788" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4805" target="_blank" rel="noopener noreferrer">New query stake-snapshot integration test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4671" target="_blank" rel="noopener noreferrer">Make leadership-schedule test less flaky</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-01-20-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-20-crypto"/>
+        <updated>2023-01-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href="https://github.com/input-output-hk/mithril/pull/675" target="_blank" rel="noopener noreferrer">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>Plutus team ran <a href="https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs" target="_blank" rel="noopener noreferrer">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we'll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There's been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href="https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">doing the change</a>, but still the CI is not happy.</li><li>The <a href="https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">same</a> was needed for the KES agents prerequisites <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">PR#317</a>.</li><li>We've started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-01-20-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-20-hydra"/>
+        <updated>2023-01-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1
+specification. Of which a first version has been aggregated and is currently
+under review. They aligned the on-chain scripts of reimbursing funds on abort
+like defined in the specification, improved the mutation test framework to have
+more control when testing plutus scripts. The added HeadId in the API and the
+TUI example client make <code>hydra-node</code> easier to use and a first experiment of a
+Hydra Head explorer was showing the utility of this - see what Heads exist on
+the <code>preview</code> network <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>HeadId to API and display in the TUI <a href="https://github.com/input-output-hk/hydra/pull/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href="https://github.com/input-output-hk/hydra/pull/679" target="_blank" rel="noopener noreferrer">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href="https://github.com/input-output-hk/hydra/pull/670" target="_blank" rel="noopener noreferrer">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href="https://www.overleaf.com/read/bbqzmptcxryj" target="_blank" rel="noopener noreferrer">Read it on overleaf</a> (<a href="https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md" target="_blank" rel="noopener noreferrer">Communication channels</a> for feedback)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2023-01-20-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-20-network"/>
+        <updated>2023-01-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+        <category label="release" term="release"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2023-01-20-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-20-sre"/>
+        <updated>2023-01-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing
+support for cardano-world.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tullia">Tullia<a class="hash-link" href="#tullia" title="Direct link to heading">​</a></h3><ul><li>Made it easier to support cloning from a PR's fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href="https://github.com/hashicorp/nomad/issues/12877" target="_blank" rel="noopener noreferrer">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href="https://colmena.cli.rs" target="_blank" rel="noopener noreferrer">Colmena</a> for deploys instead of <a href="https://github.com/serokell/deploy-rs" target="_blank" rel="noopener noreferrer">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href="https://github.com/yaxitech/ragenix" target="_blank" rel="noopener noreferrer">ragenix</a> instead of <a href="https://github.com/Mic92/sops-nix" target="_blank" rel="noopener noreferrer">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-world">bitte-world<a class="hash-link" href="#bitte-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul>]]></content>
+        <author>
+            <name>Michael Fellinger</name>
+            <uri>https://github.com/manveru</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-01-19-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-19-ledger"/>
+        <updated>2023-01-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694
+(restructuring the ledger state),
+fixed the PDF hosting problem (mostly the formal specs),
+built out more of the new user-friendly ledger API,
+finished a proof of concept for constraint-based generators for property tests
+(with the hopes of being able to replace our trace generators one day),
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="restructuring-the-ledger-state">Restructuring the ledger state<a class="hash-link" href="#restructuring-the-ledger-state" title="Direct link to heading">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,
+as described in CIP-1694.
+In particular, the ledger rules will be restructured as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">   BBODY</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |-------------------------------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v                               v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   TICK                            LEDGERS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |                               |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |---------|                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v         v                     v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |----------|          |--------|-------------------|-----------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v          v                   v                   v           v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                              |                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |---------|------------|       v                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v         v            v      DELPL                v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             |--------|          |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             v        v          v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">-..- Removed</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">+..+ Added</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">~..~ Modified</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.
+In the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.
+We have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pdf-hosting">PDF hosting<a class="hash-link" href="#pdf-hosting" title="Direct link to heading">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag
+with a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.
+The action creates a GitHub release containing the PDFs.
+The links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="powering-the-new-ledger-api">Powering the new ledger API<a class="hash-link" href="#powering-the-new-ledger-api" title="Direct link to heading">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,
+and replaced them with lenses.
+This is probably the last major restructuring that the ledger team will do on the code base
+for the API for a while
+(the Plutus tools team will be working on it next, see <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">here</a>).
+We also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative
+of not just an initial state, generate a single random valid block, and then test our properties.
+The hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a> massive CI speedup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a> better types for fees in the protocol parameters</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2023-01-14-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-14-db-sync"/>
+        <updated>2023-01-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused
+the last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the
+new leger core and ghc-9.2.4</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate CHaP
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1331" target="_blank" rel="noopener noreferrer">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1332" target="_blank" rel="noopener noreferrer">#1332</a></li><li>Technical debt: Add code formatter fourmolu
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1334" target="_blank" rel="noopener noreferrer">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2023-01-13-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-13-hydra"/>
+        <updated>2023-01-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the
+technical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique
+<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to
+explicitly synchronize from genesis (if configured), and fixed smaller log and
+build issues reported by new users.</p><p>Besides this, a retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+was published by Matthias Benkort (CF) on Hydra, summarizing our progress made
+in 2022 also an outlook where Hydra is headed for in 2023. Also, the team had
+some first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href="https://hydra.family/head-protocol/monthly/2022-12" target="_blank" rel="noopener noreferrer">hydra
+website</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also
+an outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href="https://github.com/ch1bo/hydra-spec" target="_blank" rel="noopener noreferrer">latest
+version in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href="https://hydra.family/head-protocol/adr/21/" target="_blank" rel="noopener noreferrer">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node Release Team Update]]></title>
+        <id>2023-01-13-release</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-13-release"/>
+        <updated>2023-01-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Node Reelease Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11-02---2023-01-13">2022-11-02 - 2023-01-13<a class="hash-link" href="#2022-11-02---2023-01-13" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on
+<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.
+This work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.5</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li></ul>]]></content>
+        <author>
+            <name>Samuel Leathers</name>
+            <uri>https://github.com/disassembler</uri>
+        </author>
+        <category label="release" term="release"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[System Test Team Update]]></title>
+        <id>2023-01-13-system-test</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-13-system-test"/>
+        <updated>2023-01-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single
+Relay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href="https://input-output-hk.github.io/cardano-node-tests/readme.html" target="_blank" rel="noopener noreferrer">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html" target="_blank" rel="noopener noreferrer">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===
+  to
+  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">details here</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul>]]></content>
+        <author>
+            <name>Dorin Solomon</name>
+            <uri>https://github.com/dorin100</uri>
+        </author>
+        <category label="system-test" term="system-test"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2023-01-12-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-12-mithril"/>
+        <updated>2023-01-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href="https://mithril.network/doc/adr/4" target="_blank" rel="noopener noreferrer">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href="https://github.com/input-output-hk/mithril/issues/671" target="_blank" rel="noopener noreferrer">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease" target="_blank" rel="noopener noreferrer">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href="https://github.com/input-output-hk/mithril/issues/681" target="_blank" rel="noopener noreferrer">#681</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2023-01-11-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-11-consensus"/>
+        <updated>2023-01-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During
+these weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and
+discussing with the Ledger team the changes that might be required for the next
+iterations. The pull request that adds the Conway era is waiting for a second
+review round and we hope to merge it soon. On the technical debt side we are
+looking into a property-test failure found in the iterators. We are
+investigating if this is an error in the model or in the implementation. We also
+improved the documentation of our testing code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.
+The Ledger team is concerned that for the remaining maps we might need the full
+ledger state on epoch boundaries. Since the main consumer of the ledger rules is
+Consensus, the code that requires access to a full state could be moved from the
+ledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take
+place in such bridge, instead of querying the ledger for the values that are
+required in the epoch-transition computations.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4234" target="_blank" rel="noopener noreferrer">relocated</a> some UTxO-HD definitions, in preparation for merging
+the prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory
+consumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely
+reaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The
+in-memory backend is about 30 minutes faster, but still slower than the baseline
+version. We are aware of this phenomenon and it is inherent to the problem of
+maintaining sequences of differences of the last <code>k</code> ledger states that allows
+us to perform rollback and roll-forward. We are in the process of measuring
+syncing from scratch times.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png" width="2500" height="1700" class="img_ev3q"></p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/pull/4263" target="_blank" rel="noopener noreferrer">added <code>StaticEither</code> accessors</a> that helped us to simplify
+the UTxO-HD prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era">New Conway era<a class="hash-link" href="#new-conway-era" title="Direct link to heading">​</a></h3><p>We incorporated the feedback of the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">pull request</a>, and rebased this
+branch on top of <code>master</code>. The PR is pending a second review round and we hope
+to merge this soon.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We are investigating a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">property-testing failure</a> involving
+iterators. Solving this requires understanding the expected behavior of
+iterators in the counterexample found by <code>QuickCheck</code> to determine if the error
+is in the model or in the implementation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4248" target="_blank" rel="noopener noreferrer">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the
+explanations about the tests are easier to find in the relevant modules, and the
+documentation is easier to keep up to date.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2023-01-11-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-11-performance-and-tracing"/>
+        <updated>2023-01-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we're now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we've made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we've started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>The improved tracing internals were implemented, and we're now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.
+We now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.
+Once this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2023-01-06-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-06-crypto"/>
+        <updated>2023-01-06T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: The API features (error handling) has been merged. </li><li>Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href="https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d" target="_blank" rel="noopener noreferrer">Version 0.1.1</a>, which was published in <a href="https://crates.io/crates/kes-summed-ed25519" target="_blank" rel="noopener noreferrer">crates.io</a>. </li><li>Updated new KES format to mithril library <a href="https://github.com/input-output-hk/mithril/pull/674" target="_blank" rel="noopener noreferrer">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href="https://github.com/input-output-hk/mithril/pull/531" target="_blank" rel="noopener noreferrer">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href="https://github.com/input-output-hk/iohk-nix/pull/520" target="_blank" rel="noopener noreferrer">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href="https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518" target="_blank" rel="noopener noreferrer">PR#255</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cryptography-handbook">Cryptography handbook<a class="hash-link" href="#cryptography-handbook" title="Direct link to heading">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href="https://input-output-hk.github.io/cryptography_spec/" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-01-05-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2023-01-05-ledger"/>
+        <updated>2023-01-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,
+built out the new Conway era transaction body (in line with CIP-1694),
+greatly reduce some problematically large calculations on the epoch boundary,
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finishing-the-deposit-tracking">Finishing the deposit tracking<a class="hash-link" href="#finishing-the-deposit-tracking" title="Direct link to heading">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.
+As this is a large data structure
+(since its size is linear with respect to the number of registered stake credentials),
+it is very important that we also reduce the memory overhead as much as possible.
+Fortunately, we were able to add very little overhead for the deposits by using existing
+efficient data structures. The extra tracking now only incurs one word (8 bytes)
+per registered stake credential.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era-transaction">New Conway era transaction<a class="hash-link" href="#new-conway-era-transaction" title="Direct link to heading">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.
+Note that the Conway era implements, losing speaking, the parts of CIP-1694 that are not
+related to the liquid democracy (the "DReps").
+The new transaction body adds the new governance actions and votes,
+while also deprecating the old governance structures
+(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.
+The wire specification is still subject to change while we work on the Conway era,
+but it is now usable and has proper testing support
+(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="optimizing-the-tickf-transition">Optimizing the <code>TICKF</code> transition<a class="hash-link" href="#optimizing-the-tickf-transition" title="Direct link to heading">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load
+placed on the node by the ledger at the epoch boundary.
+While still not perfect, we believe that we have removed one of the final problematically long
+epoch boundary computations that exacerbate situations like
+<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">this</a>.
+In particular, the problem involved the way in which the consensus layer obtains a view of the
+ledger for the purposes of checking the leadership schedule in a new epoch.
+We implemented a stopgap measure which now only incurs a single multi-second cost once per epoch
+instead of potentially several multi-second costs while the networks waits for the first block
+of a new epoch to be minted.</p><p>See:</p><ul><li>An <a href="https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md" target="_blank" rel="noopener noreferrer">ADR</a> about the decision.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-ledger-event">Improved ledger event<a class="hash-link" href="#improved-ledger-event" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.
+For this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now
+includes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-type-saftey">Improved type saftey<a class="hash-link" href="#improved-type-saftey" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR
+encoders and decoders were using the wrong level of precision, having to due with with
+the Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types
+for <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="codemodule-organization">Code/Module organization<a class="hash-link" href="#codemodule-organization" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,
+due to the uncertainly of release dates while we were implementing them.
+In particular, they were coupled in way that is different from the rest of the code base.
+With hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two
+separate ledger era packages, which is now consistent with the rest of the repository
+and module structure.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test
+generator code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,
+the ledger does not need to deal with signing keys, and since this is a topic that
+deserves the utmost care, it is best to make it clear that our use of signing keys
+is only for testing.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest
+of the codebase.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="revert-pointer-address-deprecation">Revert pointer address deprecation<a class="hash-link" href="#revert-pointer-address-deprecation" title="Direct link to heading">​</a></h4><p>Thanks to one of our excellent internal auditors,
+<a href="https://github.com/jmhrpr" target="_blank" rel="noopener noreferrer">@jmhrpr</a>,
+we now have a better plan for deprecating pointer addresses.
+This meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3161" target="_blank" rel="noopener noreferrer">issue-3161</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3215" target="_blank" rel="noopener noreferrer">pull-3215</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="miscellaneous">Miscellaneous<a class="hash-link" href="#miscellaneous" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,
+reducing many constraints.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a> - We switch from <a href="https://hackage.haskell.org/package/ormolu" target="_blank" rel="noopener noreferrer">ormolu</a> to
+<a href="https://hackage.haskell.org/package/fourmolu" target="_blank" rel="noopener noreferrer">fourmolu</a>.
+The reason was to be able to finally have more diff friendly code!</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-12-28-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-28-node-cli-api"/>
+        <updated>2022-12-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-12-28 - 2023-01-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4762" target="_blank" rel="noopener noreferrer">Fix hedgehog-extras sha hash</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4759" target="_blank" rel="noopener noreferrer">Update hegehog-extras bounds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4751" target="_blank" rel="noopener noreferrer">GitHub token fix</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4743" target="_blank" rel="noopener noreferrer">Use setup-haskell action</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4738" target="_blank" rel="noopener noreferrer">Use Github Action to install libsecp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4714" target="_blank" rel="noopener noreferrer">Update index state and hedgehog-extras.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4710" target="_blank" rel="noopener noreferrer">Cleaned cabal files</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4737" target="_blank" rel="noopener noreferrer">Add cache versioning</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4742" target="_blank" rel="noopener noreferrer">Delete obsolete scripts</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4746" target="_blank" rel="noopener noreferrer">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4749" target="_blank" rel="noopener noreferrer">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4754" target="_blank" rel="noopener noreferrer">Optimise query stake-snapshot command</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-12-16-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-16-hydra"/>
+        <updated>2022-12-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/" target="_blank" rel="noopener noreferrer">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a>.</li><li>Recorded decision to use model-based testing (<a href="https://hydra.family/head-protocol/adr/22/" target="_blank" rel="noopener noreferrer">ADR22</a>) and improved Model <a href="https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html" target="_blank" rel="noopener noreferrer">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href="https://github.com/input-output-hk/hydra/issues/656" target="_blank" rel="noopener noreferrer">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href="https://github.com/input-output-hk/hydra/pull/646" target="_blank" rel="noopener noreferrer">#646</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Push <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2022-12-15-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-15-mithril"/>
+        <updated>2022-12-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2248.1" target="_blank" rel="noopener noreferrer"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href="https://crates.io/crates/mithril-stm" target="_blank" rel="noopener noreferrer"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node's multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href="https://github.com/input-output-hk/mithril/issues/619" target="_blank" rel="noopener noreferrer">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/638" target="_blank" rel="noopener noreferrer">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Fixed the protocol parameters transition <a href="https://github.com/input-output-hk/mithril/issues/627" target="_blank" rel="noopener noreferrer">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href="https://github.com/input-output-hk/mithril/issues/510" target="_blank" rel="noopener noreferrer">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href="https://github.com/input-output-hk/mithril/issues/633" target="_blank" rel="noopener noreferrer">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href="https://github.com/input-output-hk/mithril/issues/621" target="_blank" rel="noopener noreferrer">#621</a></li><li>Worked on the re-genesis of the test networks <a href="https://github.com/input-output-hk/mithril/issues/651" target="_blank" rel="noopener noreferrer">#651</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-12-14-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-14-consensus"/>
+        <updated>2022-12-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the
+backing store and Mempool on the UTxO-HD branch with important discoveries
+regarding parallel QSM testing. We also worked with the Ledger team to envisage
+the modifications that are required in Ledger and Consensus to accommodate the
+changes in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking
+the ledger operations, which will allow us to identify, debug, and profile
+potential performance problems. We drafted a document that defines how to manage
+the versions of Consensus-related packages. The top level documentation of
+<code>ouroboros-network</code> now features a description of the consensus components and
+provides a hyperlinked map to the modules documentation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the
+parallel case proved to be more challenging than we thought. The operation of
+adding a list of transactions to the mempool is not atomic and, as a result,
+when adding a list of transactions, transactions from other processes can be
+added in between. The mempool implementation handles this correctly, however
+this required us to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">redesign</a> the parallel model we had to take
+the lack of atomicity into account.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We finished refactoring the backing store property tests. The second review
+round is ongoing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)
+fetching/looking up data from disk.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis
+design related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely
+delineates a fundamental component. We almost have a full Haskell prototype of
+it. It will be very nicely self-contained, perhaps even usable in the ultimate
+implementation!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto
+types to avoid huge allocation on the epoch boundary when changing aspects of
+the crypto that will only manifest in headers, not in the ledger states.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pull-request</a> that adds a support to <code>db-analyser</code> for
+benchmarking ledger operations. This will allow us to identify, debug, and
+profile potential performance problems. The benchmark focus on the main 5 ledger
+operations that are involved in chain syncing, block forging, and block
+validation, namely:</p><ol start="0"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65
+million blocks (approximately) of the Cardano chain. The thin yellow lines under
+the x-axis show the epoch boundaries, whereas the thick yellow lines correspond
+to the era transitions.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png" width="1600" height="800" class="img_ev3q"></p><p>As we can see in this figure, era and epoch boundaries require more computation
+time. The ledger team are aware of this problem, and we are working to improve
+this situation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4207" target="_blank" rel="noopener noreferrer">drafted a document</a> motivating and defining how Consensus (and
+possibly other core teams) will/should manage our package versions. This
+pull-request garnered many great discussions from our team members and other
+teams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et
+al. We want to thank you all for your input, and we found this discussion very
+enlightening!</p><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">pull request</a> that adds an overview of consensus to
+the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB-sync Team Update]]></title>
+        <id>2022-12-14-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-14-db-sync"/>
+        <updated>2022-12-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have
+been found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses
+reverse indexes, same as the release
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1320" target="_blank" rel="noopener noreferrer">#1320</a>
+This also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1324" target="_blank" rel="noopener noreferrer">#1324</a></li><li>AdaPots fix <a href="https://github.com/input-output-hk/cardano-db-sync/pull/1323" target="_blank" rel="noopener noreferrer">#1323</a>. This
+fixes an issue where the per epoch AdaPots didn't match the epoch boundary, but
+they also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">#3212</a>. This pr
+adjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the
+number of queries that db-sync does during syncing an make syncing faster.</li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-12-14-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-14-node-cli-api"/>
+        <updated>2022-12-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-12-14 - 2022-12-27</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4703" target="_blank" rel="noopener noreferrer">Move style guide to wiki</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4734" target="_blank" rel="noopener noreferrer">Cache secp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4717" target="_blank" rel="noopener noreferrer">Use cabal-cache</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4699" target="_blank" rel="noopener noreferrer">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4724" target="_blank" rel="noopener noreferrer">Update cabal.project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4125" target="_blank" rel="noopener noreferrer">Add aarch64-darwin to nix-shell</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4626" target="_blank" rel="noopener noreferrer">Improved error message for failed asset name decode</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4700" target="_blank" rel="noopener noreferrer">Remove cardano-cli address build-script</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4698" target="_blank" rel="noopener noreferrer">Move signing key reading to cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4712" target="_blank" rel="noopener noreferrer">Only run chairman test on latest era</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4679" target="_blank" rel="noopener noreferrer">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2022-12-14-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-14-performance-and-tracing"/>
+        <updated>2022-12-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we've planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we're continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we'll be running the model cluster workload.</p><p>We've also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we've done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that's also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it's the fair benchmark, because that's the way we expect SPO's to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we've established the performance of the new system to be adequate for the release, we won't be delaying it much further.</p><p>In addition, we're still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we've also improved provenance of the raw data, by collecting more identification information and statistics about it.
+This means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.
+This will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.
+Previously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)
+Naturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-12-12-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-12-network"/>
+        <updated>2022-12-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+        <category label="release" term="release"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2022-12-09-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-09-crypto"/>
+        <updated>2022-12-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We merged the API redesig <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We'll probably circle back to this in the future <a href="https://github.com/input-output-hk/musig2/pull/36" target="_blank" rel="noopener noreferrer">PR#36</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We merged the individual signature <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href="https://github.com/input-output-hk/kes/commits/master" target="_blank" rel="noopener noreferrer">kes repo</a>) </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href="https://gitlab.haskell.org/ghc/ghc/-/issues/22564" target="_blank" rel="noopener noreferrer">bug in GHC</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Fixed a 'use-after-free' bug in the KES agent.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-12-09-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-09-hydra"/>
+        <updated>2022-12-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on completing to "Validate coordinated head protocol against formal model", this is a huge step to verify the implementation is secure. They also worked on implementing <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> related to bounded tx validity which is now under review. <a href="https://github.com/obsidiansystems/hydra-pay" target="_blank" rel="noopener noreferrer">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href="https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue" target="_blank" rel="noopener noreferrer">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Document model based testing <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a> &amp; <a href="https://github.com/input-output-hk/hydra/issues/641" target="_blank" rel="noopener noreferrer">#641</a></li><li>Got <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href="https://github.com/input-output-hk/hydra/issues/634" target="_blank" rel="noopener noreferrer">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock "the RFP prepared for the external audit" <a href="https://github.com/input-output-hk/hydra/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href="https://github.com/input-output-hk/hydra/issues/630" target="_blank" rel="noopener noreferrer">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href="https://github.com/input-output-hk/hydra/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-12-09-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-09-ledger"/>
+        <updated>2022-12-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly
+<code>cardano-ledger-api</code> package!
+A <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>
+will be filled out in the days ahead,
+people interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using
+<a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">architectural decision records</a>
+to leave a record of important decisions that the team makes.
+We will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.
+We are prioritizing correctness with our first pull request, and will follow up with
+performance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a>
+for more context.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ledger-api">Cardano ledger API<a class="hash-link" href="#cardano-ledger-api" title="Direct link to heading">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it
+out and adding much needed documentation.
+They have also added doctests!
+In the days to come, the Plutus tools team will map out a lot more work for the API and record
+it in this
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3182" target="_blank" rel="noopener noreferrer">pull-3182</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3188" target="_blank" rel="noopener noreferrer">pull-3188</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="architectural-decision-records-adrs">Architectural Decision Records (ADRs)<a class="hash-link" href="#architectural-decision-records-adrs" title="Direct link to heading">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made
+in the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3177" target="_blank" rel="noopener noreferrer">pull-3177</a> (rendered <a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">here</a>)</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tracking-individual-deposits">Tracking individual deposits<a class="hash-link" href="#tracking-individual-deposits" title="Direct link to heading">​</a></h4><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3190/files" target="_blank" rel="noopener noreferrer">ADR-3</a>
+for background.
+We now have the logic in place to track individual deposits, and a host of property tests
+to make sure that the logic is correct.
+The current implementation uses more memory than it needs to, and we will address that next,
+with our hope being to only use one word (8 bytes) per registered stake credential.
+There is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="removing-pointer-addresses">Removing pointer addresses<a class="hash-link" href="#removing-pointer-addresses" title="Direct link to heading">​</a></h4><p>Pointer addresses, which have never seen any real use
+(there are something like eleven on mainnet), are being deprecated starting at Cardano major
+version 9.
+<a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a> gives the context.
+We are disabling them by first preventing transaction outputs containing them
+from being serialized by the node at the moment we switch to version 9.
+At the hard fork after that, we will translate the existing few pointer addresses
+to enterprise addresses.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3174" target="_blank" rel="noopener noreferrer">pull-3174</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never
+be exercised. After we have passed the given hardfork, we are able to clean up the code
+and simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3165" target="_blank" rel="noopener noreferrer">pull-3165</a> - We improved the type safety of our code while also discovering and fixing
+a serialization bug.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed dead code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to
+dislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We organized our property testing code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3200" target="_blank" rel="noopener noreferrer">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the
+ledger state to the Plutus script context.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-12-02-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-02-hydra"/>
+        <updated>2022-12-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress
+after last week's summit. They have extended their model-based testing (MBT)
+approach with transaction creation &amp; observation
+<a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a>, solved
+<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet
+initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a>.
+Also, the Hydra researchers updated the security proofs of the Coordinated Hydra
+Head, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href="https://github.com/input-output-hk/hydra/pull/644" target="_blank" rel="noopener noreferrer">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB sync Team Update]]></title>
+        <id>2022-12-01-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-01-db-sync"/>
+        <updated>2022-12-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,
+it makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces
+migrations. This release finalises the objectives that were set for db-sync for the previous
+3 months period and part of the syncing speed objective set for the next period
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100" target="_blank" rel="noopener noreferrer">Changelog</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li><p>Branch <a href="https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b" target="_blank" rel="noopener noreferrer">release/13.1.0.x</a>
+includes all the improvements related to the release. The release is passing through the testing
+phase and a number of bugs and issues have been fixed, like
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a>
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a>.
+Also many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new
+release and development process, so that it takes into account migrations
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1305" target="_blank" rel="noopener noreferrer">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for
+docker.</p></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2022-12-01-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-01-mithril"/>
+        <updated>2022-12-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href="https://github.com/input-output-hk/mithril/issues/585" target="_blank" rel="noopener noreferrer">#585</a></li><li>Completed the second stage of the store automatic migration process <a href="https://github.com/input-output-hk/mithril/issues/600" target="_blank" rel="noopener noreferrer">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href="https://github.com/input-output-hk/mithril/issues/599" target="_blank" rel="noopener noreferrer">#599</a></li><li>Completed CI/CD handling of PR from forks <a href="https://github.com/input-output-hk/mithril/issues/597" target="_blank" rel="noopener noreferrer">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/586" target="_blank" rel="noopener noreferrer">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Worked on multi-platforms end to end test <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul>]]></content>
+        <author>
+            <name>Jean-Philippe Raynaud</name>
+            <uri>https://github.com/jpraynaud</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[System Test Team Update]]></title>
+        <id>2022-12-01-system-test</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-12-01-system-test"/>
+        <updated>2022-12-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single
+Relay</em> functionality, and also tested some DB-Sync tags.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href="https://github.com/mkoura/report-aggregator" target="_blank" rel="noopener noreferrer">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul>]]></content>
+        <author>
+            <name>Dorin Solomon</name>
+            <uri>https://github.com/dorin100</uri>
+        </author>
+        <category label="system-test" term="system-test"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-11-30-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-30-consensus"/>
+        <updated>2022-11-30T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic
+cursor API that was needed to implement LMDB range reads, which is in turn
+required for the implementation of the UTxO HD feature. We added tables to
+several tests in for the UTxO HD feature, which increases our confidence in the
+correctness of the prototype. The mempool property tests are close to being
+completed. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with
+CSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a
+high-level overview of consensus to the top level documentation of
+<code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>)) which was
+needed to solve a bug with LMDB range-reads. After this PR was merged, we focused on
+bridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating
+using <code>lmdb-simple</code>'s cursor API without <code>Serialise</code> constraints (<a href="https://github.com/input-output-hk/lmdb-simple/pull/3" target="_blank" rel="noopener noreferrer">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4184" target="_blank" rel="noopener noreferrer">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses
+tables. This will enable us to exercise the UTxO HD mempool integration by
+leveraging the existing mempool property-tests. The new state-machine
+property-tests are still needed for testing the parallel behaviour of the
+mempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements
+in the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the
+state machine did not have access to mutable references. However, the mempool
+tests require the use of such mutable references for mocking the ledger
+interface. As a result, our parallel tests were failing with rather obscure
+messages. @Jasagredo submitted a pull request (<a href="https://github.com/stevana/quickcheck-state-machine/pull/12" target="_blank" rel="noopener noreferrer">#12</a>) that allows for
+new mutable references to be created at each run of the state machine.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code
+and gathering results (i.e., plots and their interpretation).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="csj-prototype">CSJ prototype<a class="hash-link" href="#csj-prototype" title="Direct link to heading">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact
+KES and batched VRF (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4151" target="_blank" rel="noopener noreferrer">#4151</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We
+are now working on the "Implementation" section (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4020" target="_blank" rel="noopener noreferrer">#4020</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4146" target="_blank" rel="noopener noreferrer">#4146</a> and <a href="https://github.com/input-output-hk/ouroboros-network/pull/4174" target="_blank" rel="noopener noreferrer">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">#4197</a>). This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-11-30-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-30-node-cli-api"/>
+        <updated>2022-11-30T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-11-30 - 2022-12-13</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Append tx output in cli transaction build command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4592" target="_blank" rel="noopener noreferrer">Update Error messages in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Replace Data.Map with Data.Map.Strict</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4708" target="_blank" rel="noopener noreferrer">Update Github actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2022-11-30-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-30-performance-and-tracing"/>
+        <updated>2022-11-30T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don't see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.
+The idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.
+We are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-11-28-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-28-network"/>
+        <updated>2022-11-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Stake-Driven Data Diffusion Release for Relays]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG's benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We've seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don't expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"kind"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"PeerStatusChangeFailure"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"peerStatusChangeType"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"reason"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"TimeoutError"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don't try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There's a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+        <category label="release" term="release"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2022-11-25-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-25-crypto"/>
+        <updated>2022-11-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don't need to be aware of the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/31" target="_blank" rel="noopener noreferrer">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library's README <a href="https://github.com/input-output-hk/mithril/pull/616" target="_blank" rel="noopener noreferrer">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>We've been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-11-25-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-25-hydra"/>
+        <updated>2022-11-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-11-23-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-23-ledger"/>
+        <updated>2022-11-23T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We released <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>,
+our proposal for entering the <a href="https://roadmap.cardano.org/en/voltaire/" target="_blank" rel="noopener noreferrer">Voltaire phase</a>.
+<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for
+Cardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.
+The draft pull request was polished, reviewed, and merged this week.
+This solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,
+and the ledger team in particular dedicated one engineer to help with these efforts
+for the next release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-conway-ledger-era">The Conway ledger era<a class="hash-link" href="#the-conway-ledger-era" title="Direct link to heading">​</a></h3><p>The current proposal in <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a> encompasses two new ledger eras.
+The first era will be called Conway, after the English mathematician John Horton Conway.
+The community facing aspects of the Conway ledger era will be very minimal,
+but it will pave the way for introducing liquid democracy.
+The details can be viewed <a href="https://github.com/input-output-hk/cardano-ledger/projects/4" target="_blank" rel="noopener noreferrer">here</a>.
+We do not yet have a formal specification for the Conway era.
+Our plan is to debut the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>.
+Briefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href="https://github.com/cardano-foundation/CIPs/pull/318" target="_blank" rel="noopener noreferrer">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="versioned-cbor">Versioned CBOR<a class="hash-link" href="#versioned-cbor" title="Direct link to heading">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano
+major protocol version.
+We still aim to preserve backwards compatibility as much as possible, but we now have a principled
+plan for resolving problems (see <a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">CIP-ledger-cbor</a>).
+In particular, we can now address several long standing issues, such as
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>, <a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits
+is much closer now to being ready to take out of draft (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>).
+For background on the issue, see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>.
+This is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>As always, we keep working on technical debt.
+We have deduplicated a some things: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3129" target="_blank" rel="noopener noreferrer">pull-3129</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a>.
+We have memoized a problematic computation (though more due diligence is needed before we can
+merge): <a href="https://github.com/input-output-hk/cardano-ledger/pull/3141" target="_blank" rel="noopener noreferrer">pull-3141</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node-release">Node release<a class="hash-link" href="#node-release" title="Direct link to heading">​</a></h3><p>We have been helping with the node release efforts. See <a href="https://github.com/input-output-hk/cardano-node/pull/4608" target="_blank" rel="noopener noreferrer">pull-4608</a>.</p>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-11-18-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-18-hydra"/>
+        <updated>2022-11-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href="https://github.com/input-output-hk/hydra" target="_blank" rel="noopener noreferrer"><code>hydra</code></a>!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href="https://github.com/input-output-hk/hydra/releases/tag/0.8.1" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href="https://github.com/input-output-hk/hydra/pull/615" target="_blank" rel="noopener noreferrer">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>"Developing Hydra" on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2022-11-18-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-18-mithril"/>
+        <updated>2022-11-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released a new Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2246.1" target="_blank" rel="noopener noreferrer">2246.1</a></li><li>Completed the first stage of the store migrations process <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href="https://github.com/input-output-hk/mithril/issues/576" target="_blank" rel="noopener noreferrer">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href="https://github.com/input-output-hk/mithril/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href="https://github.com/input-output-hk/mithril/issues/594" target="_blank" rel="noopener noreferrer">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-11-16-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-16-consensus"/>
+        <updated>2022-11-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team started documenting the
+implementation of the UTxO HD feature and continued developing tests for it. As
+part of our work on UTxO HD, we improved the Haskell support for LMDB. We also
+spent time working on the LSM tree prototype, and designed a parameter tuning
+algorithm for it. Regarding our work on Genesis, our investigation of the
+"plateaus" pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This
+led us to developing a caching strategy that will not only remove the
+aforementioned "plateaus", but can help alleviating the growing block production
+delay on epoch switch. We also helped reviewing the block forge credential
+hotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In
+particular, we improved the <code>io-sim</code> framework, which is crucial for testing and
+simulating Cardano components. We also removed thunks that appeared on era
+translations, and improved our diffusion pipelining feature. We are working on a
+presentation for explaining Praos and Genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the
+anti-diff implementation of sequences of differences. Speedups are now in the
+range of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a "parameter tuning algorithm" for the LSM tree
+prototype. This enables us to run experiments to check the correctness of
+the algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the "plateaus" in the <code>ChainSync</code> jumping prototype
+pointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for
+testing and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ "plateaus" led us to developing a caching strategy for
+<code>TICKF</code> that will not only remove these "plateaus", but can help alleviating
+the growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended
+for use in the adoption of P2P.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4060" target="_blank" rel="noopener noreferrer">#4060</a>, which adds a report documenting the UTxO HD
+feature, and puts emphasis in explaining how the mempool works in combination
+with UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the
+mempool (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4143" target="_blank" rel="noopener noreferrer">#4143</a>). The problem was that we were testing with mostly small
+values, which artificially boosted the performance gains we saw on benhcmarks.
+Speedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different
+configurations.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>).
+This required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new
+API. We also updated the backing store property tests to use the new version of
+the monadic cursor API.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a
+"parameter tuning algorithm" that adapts the LSM tree design based on factors
+like:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with
+existing experimental results from the LSM tree paper to see if the algorithm is
+working correctly.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>We focused on investigating the "plateaus" in the <code>ChainSync</code> tip, which turned
+out to be due to the <code>TICKF</code> bug which we previously were only aware of in the
+context of the long forging times near epoch boundaries. For the most drastic
+patch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the
+<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png" width="765" height="445" class="img_ev3q"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the
+baseline.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png" width="773" height="445" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>After addressing the PR comments, we merged PR <a href="https://github.com/input-output-hk/io-sim/pull/16" target="_blank" rel="noopener noreferrer">#16</a>, which implements
+the <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>
+library, which is crucial for testing and simulating Cardano components PR #16
+closed <a href="https://github.com/input-output-hk/ouroboros-network/issues/1461" target="_blank" rel="noopener noreferrer">#1461</a>. This new feature was published as version <code>0.4.0.0</code>
+of <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling
+nightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and
+<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of
+thunks that appeared in era translations (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3143" target="_blank" rel="noopener noreferrer">#3143</a>). The fixes will be
+integrated back into consensus when <code>cardano-ledger</code> approves and publish the
+changes introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/2" target="_blank" rel="noopener noreferrer">#2</a>). We currently test the build on
+a Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3857" target="_blank" rel="noopener noreferrer">#3857</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3860" target="_blank" rel="noopener noreferrer">#3860</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3856" target="_blank" rel="noopener noreferrer">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and
+Genesis explanation presentations. The idea is to produce a video that gives an
+overview of these protocols.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4054" target="_blank" rel="noopener noreferrer">#4054</a>), since this was blocking our benchmarking work for
+Genesis. In addition, this issue has the Cardano community <a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">quite
+concerned</a>, so we are hoping the work done in caching the
+computation of the <code>TICKF</code> rule can help alleviating the growing block
+production delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">#3800</a> from the
+networking team, which is intended for use in the adoption of P2P.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-11-16-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-16-node-cli-api"/>
+        <updated>2022-11-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-11-16 - 2022-11-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4562" target="_blank" rel="noopener noreferrer">Add a native tokens tutorial and exercises</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4674" target="_blank" rel="noopener noreferrer">Update cardano-cli's help</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4644" target="_blank" rel="noopener noreferrer">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4639" target="_blank" rel="noopener noreferrer">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4650" target="_blank" rel="noopener noreferrer">Fix windows CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & tracing update]]></title>
+        <id>2022-11-16-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-16-performance-and-tracing"/>
+        <updated>2022-11-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2022-11-11-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-11-crypto"/>
+        <updated>2022-11-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href="https://github.com/input-output-hk/cardano-base/pull/336" target="_blank" rel="noopener noreferrer">PR</a> has been merged, and we've adapted the KES secure <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#</a>). Finally, we've 'cleaned' our libsodium fork, and we directly fork upstream, rather than forking Algorand's fork. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href="https://github.com/input-output-hk/kes-agent" target="_blank" rel="noopener noreferrer">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-11-11-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-11-hydra"/>
+        <updated>2022-11-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper
+on our "Hydra for Payments" project (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href="https://github.com/input-output-hk/hydra-poc/issues/599" target="_blank" rel="noopener noreferrer">#599</a>)</li><li>Minor improvements to logging for better observability (<a href="https://github.com/input-output-hk/hydra-poc/issues/598" target="_blank" rel="noopener noreferrer">#598</a>, <a href="https://github.com/input-output-hk/hydra-poc/issues/600" target="_blank" rel="noopener noreferrer">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href="https://github.com/input-output-hk/hydra-poc/issues/590" target="_blank" rel="noopener noreferrer">#590</a>)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Close more gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>"Developing Hydra" on Day 2, Nov 21st, 13:50 CET</strong></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-11-11-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-11-ledger"/>
+        <updated>2022-11-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned
+CBOR serialization. This was an enormous effort, but it will solve a host of problems that we have
+had since the Shelley phase. It will take time to properly review it, and we will
+need to put in a lot of effort to integrate it with the downstream components, but this is  a huge
+milestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction
+serialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will
+not notice any difference, but it is a necessary change needed to prepare the way for
+decentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on
+bringing coherency and consistency to the code base with a common naming convention, and
+improving some error messages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.
+When we encounter a problem with our deserializers, it can be very difficult to implement a fix.
+It is difficult because we can only fix such issues during a hard fork, and leading up to the
+hard fork we must maintain two serializations for the same type in order to not cause unintended
+network splitting (the problematic version must be used before the hard fork,
+and the fixed version is used afterwards).
+This can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to
+search for where all the problematic uses are located.
+The new versioned CBOR serialization allows us to gracefully handle this transition.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.
+See [<a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">pull-372</a>].</li><li>We have draft for the new deposit tracking.
+This draft is not as memory efficient as the final version will be,
+but it is a sufficient proof of concept that we can write property tests against, ensuring
+that we have not changed the semantics.
+We will optimize after we are sure of the correctness.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper
+function, named <code>evaluateTransactionExecutionUnits</code>.
+In particular, it now returns all the information needed to rerun the script with exactly the
+same arguments. This feature will end up appearing in the CLI and other tools from the Plutus
+tools team.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3135" target="_blank" rel="noopener noreferrer">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3126" target="_blank" rel="noopener noreferrer">pull-3126</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3120" target="_blank" rel="noopener noreferrer">pull-3120</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3118" target="_blank" rel="noopener noreferrer">pull-3118</a>], and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3116" target="_blank" rel="noopener noreferrer">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the
+<a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3139" target="_blank" rel="noopener noreferrer">pull-3139</a>].</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-11-11-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-11-network"/>
+        <updated>2022-11-11T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster
+(which consists of 50 nodes).  There is a performance regression in the header
+notification metric.  The P2P cluster is constructed with the same
+topology as the non-p2p reference one this indicates some regression which
+needs to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P
+release for BP nodes: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with
+<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detail-description">Detail description<a class="hash-link" href="#detail-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance-regression">Performance regression<a class="hash-link" href="#performance-regression" title="Direct link to heading">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png" class="img_ev3q"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of
+the slot to when a header was received. The <code>y</code> axis is the percentile of nodes
+that received a header.  We are currently investigating possible causes of the
+regression. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-p2p-topology-form">New P2P topology form<a class="hash-link" href="#new-p2p-topology-form" title="Direct link to heading">​</a></h3><p>The new topology file format is described in this <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing-improvements">Tracing improvements<a class="hash-link" href="#tracing-improvements" title="Direct link to heading">​</a></h3><ul><li>We improved a handshake error reporting, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4136" target="_blank" rel="noopener noreferrer">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>
+in <code>json</code> format, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">pull #4127</a>.  Such demotions should be investigated by the
+pool operator.  They can indicate a problem in the deployed system, but also
+they could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-improvements">Open Source Improvements<a class="hash-link" href="#open-source-improvements" title="Direct link to heading">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source
+contributors and/or maintenance tasks: <a href="https://github.com/input-output-hk/typed-protocols/pull/22" target="_blank" rel="noopener noreferrer">pull #22</a>, <a href="https://github.com/input-output-hk/io-sim/pull/45" target="_blank" rel="noopener noreferrer">pull #45</a>, <a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pull #48</a>. </p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-11-04-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-04-hydra"/>
+        <updated>2022-11-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a>. They also completed implementation of <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a> and alignment of the specification document with auditors.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete and merge ADR18 <a href="https://github.com/input-output-hk/hydra-poc/pull/579" target="_blank" rel="noopener noreferrer">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/595" target="_blank" rel="noopener noreferrer">#595</a></li><li>Have first gap of <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Mithril Team Update]]></title>
+        <id>2022-11-04-mithril</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril"/>
+        <updated>2022-11-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.]]></summary>
+        <content type="html"><![CDATA[<p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href="https://github.com/input-output-hk/mithril/issues/500" target="_blank" rel="noopener noreferrer">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href="https://github.com/input-output-hk/mithril/issues/542" target="_blank" rel="noopener noreferrer">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href="https://github.com/input-output-hk/mithril/issues/543" target="_blank" rel="noopener noreferrer">#543</a></li><li>Publication of an <a href="https://mithril.network/doc/adr/3" target="_blank" rel="noopener noreferrer">ADR3</a></li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2022/10/28/updated-environments" target="_blank" rel="noopener noreferrer">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2244.0" target="_blank" rel="noopener noreferrer">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href="https://github.com/input-output-hk/mithril/issues/526" target="_blank" rel="noopener noreferrer">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href="https://github.com/input-output-hk/mithril/pull/484" target="_blank" rel="noopener noreferrer">#484</a></li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="mithril" term="mithril"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Open-Source Team]]></title>
+        <id>2022-10-31-open-source</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-31-open-source"/>
+        <updated>2022-11-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High Level Summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High Level Summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>We've been working toward publishing <em>Cardano Backlog</em>, currently its in
+review by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">cardano-updates</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for
+cardano project.  In last few weeks we were making steps towards publishing our
+backlog.  It's currently under review by the communication team, although most
+of the issues are already visible across various repositories.</p><p>The open-source initiatives have their own
+<a href="https://github.com/orgs/input-output-hk/projects/60" target="_blank" rel="noopener noreferrer">project</a>.  It is set up
+to help us track our major open-source activities.  Right now there are two
+work streams:</p><ul><li>the work on <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href="https://hackage.haskell.org/" target="_blank" rel="noopener noreferrer">Hackage</a> or <a href="https://crates.io" target="_blank" rel="noopener noreferrer">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to
+<em>Cardano</em> which we would like publish to publish, see the following
+<a href="https://github.com/orgs/input-output-hk/projects/60/views/3" target="_blank" rel="noopener noreferrer">link</a>.  Arnauld Bailly recently published
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+library on Hackage.  The networking team is slowly progressing towards
+publishing <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">io-sim</a> and related packages, checkout the progress
+<a href="https://github.com/orgs/input-output-hk/projects/19/views/24" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Thanks to Arnaud Bailly our <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">Cardano Updates</a> website has
+a new look &amp; feel!  It's using <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source
+repositories.  He collected many interesting metrics, which allows us to see
+where we need to improve as an open-source project to make the Cardano project
+and many smaller related libraries which we maintain be more open and available
+for open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano
+repositories are missing the most:
+<img loading="lazy" alt="Documentation Adoption" src="/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png" width="1493" height="716" class="img_ev3q">
+You can expect we will improve in these metrics in the coming weeks.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="open-source" term="open-source"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Embedding Quality Workstream]]></title>
+        <id>2022-11-03-embedding-quality</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-03-embedding-quality"/>
+        <updated>2022-11-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)
+See <a href="https://input-output-hk.github.io/cardano-node-tests" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>We defined an <a href="https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md" target="_blank" rel="noopener noreferrer">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href="https://github.com/input-output-hk/cardano-node/issues" target="_blank" rel="noopener noreferrer">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul>]]></content>
+        <author>
+            <name>Dorin Solomon</name>
+            <uri>https://github.com/dorin100</uri>
+        </author>
+        <category label="embedding-quality" term="embedding-quality"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-10-02-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-02-consensus"/>
+        <updated>2022-11-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the
+UTxO HD prototype. We completed the era-transition and backing store tests, and
+the mempool tests are advancing at a steady pace. Regarding our work in the
+Genesis design, we continued our collaboration with the research and networking
+teams, and we continue investigating strategies for making the chain-sync
+jumping prototype faster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs
+in the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to
+incorporate the improvements to the LMDB cursor API that these tests
+made possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and
+the networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping
+prototype. We gained additional insight on which parameters to tweak next.
+In spite of the baseline still being faster, the current prototype already
+achieves a significant speedup when compared to the naive approach of simply
+running full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular
+we merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4073" target="_blank" rel="noopener noreferrer">era-transition tests
+PR</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">backing store property tests
+PR</a> has been
+reviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting
+test cases.</li></ul><p>The <a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">monadic cursor API</a>
+went through its first review round. The API is in a relatively stable state.
+This PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB
+operations. The next steps are:</p><ul><li>Write
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+state-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property
+tests. This will involve adding boilerplate code in consensus to make up for
+the removal of the <code>cborg</code>-based interface.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h2><p>We worked on the <a href="https://github.com/input-output-hk/ouroboros-network/issues/4121" target="_blank" rel="noopener noreferrer">LSM tree
+prototype</a>. In
+particular, we focused on tuning the LSM tree design to the different workloads
+that consensus has (eg syncing, normal node operation, etc).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular
+we compared the performance of different jump intervals, which, somewhat
+surprisingly, do not make a significant difference. In particular, we are seeing
+periodic "plateaus" where the chain-sync tip does not progress, but they are
+much longer for the prototype. Our hypothesis is that this seem to be due to a
+combination of the garbage collector (GC) pauses, and the actual time it takes
+the non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo
+fragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of
+tweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype
+using different jumping intervals. It compares the syncing progress by plotting
+the slots of adopted blocks against time. The baseline is still faster, however
+it is worth noting that the current prototype already achieves a significant
+speedup when compared to the naive approach of simply running full chain-sync
+with all peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg" width="998" height="445" class="img_ev3q"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,
+and includes, in addition to the slots of adopted blocks, the slots of the tip
+of the ChainSync fragment. This allows us to see how far ahead of the selected
+tip the CS dynamo is, i.e. how much room we have for BlockFetch not to get
+stalled. It shows periodic behaviour (due to the forecasting limit), and shows
+that the CS fragment tip is not progressing for significant periods
+("plateaus").</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg" width="998" height="445" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4098" target="_blank" rel="noopener noreferrer">clarified</a> a
+common source of confusion around VRF tie-breaking and cross-era chain
+selection. This PR involved correcting potentially misleading names of
+VRF-related functions, and providing context for a particular VRF value is
+used for tie-breaking.</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-11-02-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-02-ledger"/>
+        <updated>2022-11-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have made the decision to use the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+in place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure
+to the model. In particular, we now have a lot of support for axiomatic set theory.
+While the next ledger era is still in the design phase, most of the team remains working
+on technical debt.
+In particular, we have moved a lot more code out of the Shelley specific modules and into
+a ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>
+ledger transition (while improving the performance), made conveniences to the development
+environment, cleaned up all the recent changes to the cost model, added a lot of documentation,
+fixed some flaky tests, and deleted some dead code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="axiomatic-set-theory">Axiomatic Set Theory<a class="hash-link" href="#axiomatic-set-theory" title="Direct link to heading">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in
+the formal ledger specifications. See [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>].</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">pull-3039</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3093" target="_blank" rel="noopener noreferrer">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which
+makes our CBOR serialization round-trip tests much more robust, and will also hopefully
+help enforce the mandate for downstream libraries to never re-serialize data that needs
+to be hashed. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3095" target="_blank" rel="noopener noreferrer">pull-3095</a>]
+(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.
+We now have a lot of benchmarks surrounding this code, and have added performance improvements.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>].</li><li>We have restored support for
+<a href="https://hackage.haskell.org/package/ghcid" target="_blank" rel="noopener noreferrer">ghcid</a>
+in our repository. This is a tool for developing with Haskell that many of us find greatly
+improves our productivity by providing us with constant feedback from the type checker.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3112" target="_blank" rel="noopener noreferrer">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3075" target="_blank" rel="noopener noreferrer">pull-3075</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3101" target="_blank" rel="noopener noreferrer">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the
+ledger repository, and cleaned it up
+(most of the heavy lifting was done by our amazing technical writers).
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3091" target="_blank" rel="noopener noreferrer">pull-3091</a>].</li><li>We removed dead code. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3089" target="_blank" rel="noopener noreferrer">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3109" target="_blank" rel="noopener noreferrer">pull-3109</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3110" target="_blank" rel="noopener noreferrer">pull-3110</a>].</li><li>We've removed more of the awkward legacy template Haskell names.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3108" target="_blank" rel="noopener noreferrer">pull-3108</a>].</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-11-02-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-02-node-cli-api"/>
+        <updated>2022-11-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-11-02 - 2022-11-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4567" target="_blank" rel="noopener noreferrer">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4587" target="_blank" rel="noopener noreferrer">Add Ord instance for AddressInEra</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4496" target="_blank" rel="noopener noreferrer">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4635" target="_blank" rel="noopener noreferrer">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4628" target="_blank" rel="noopener noreferrer">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4599" target="_blank" rel="noopener noreferrer">export RawBytesHexError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/2883" target="_blank" rel="noopener noreferrer">Add Plutus minting script doc</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575/files" target="_blank" rel="noopener noreferrer">Improve test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4586" target="_blank" rel="noopener noreferrer">Enable stale bot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4557" target="_blank" rel="noopener noreferrer">Add link to troubleshooting page in the wiki</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4550" target="_blank" rel="noopener noreferrer">Use environment files in Github Actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4544" target="_blank" rel="noopener noreferrer">Add single entrypoint for starting testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575" target="_blank" rel="noopener noreferrer">Improve cardano-testnet test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4595" target="_blank" rel="noopener noreferrer">Reorder module hierarchy</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node Release Team Update]]></title>
+        <id>2022-11-02-release</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-02-release"/>
+        <updated>2022-11-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Node Reelease Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-19---2022-11-02">2022-10-19 - 2022-11-02<a class="hash-link" href="#2022-10-19---2022-11-02" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,
+a temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc1 tag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href="https://github.com/input-output-hk/cardano-node/pull/4540" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li><li><p><a href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre" target="_blank" rel="noopener noreferrer">Cicero CI Migration</a></p></li></ul>]]></content>
+        <author>
+            <name>Samuel Leathers</name>
+            <uri>https://github.com/disassembler</uri>
+        </author>
+        <category label="release" term="release"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[System Test Team Update]]></title>
+        <id>2022-11-02-system-test</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-02-system-test"/>
+        <updated>2022-11-02T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href="https://input-output-hk.github.io/cardano-node-tests/" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests" target="_blank" rel="noopener noreferrer">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul>]]></content>
+        <author>
+            <name>Dorin Solomon</name>
+            <uri>https://github.com/dorin100</uri>
+        </author>
+        <category label="system-test" term="system-test"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB Sync Team Update]]></title>
+        <id>2022-11-01-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-11-01-db-sync"/>
+        <updated>2022-11-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,
+unique and foreign keys. It also provides a way to fix older values and migrates without the need to
+resync from genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="schema-simplifications">Schema simplifications<a class="hash-link" href="#schema-simplifications" title="Direct link to heading">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1295" target="_blank" rel="noopener noreferrer">#1295</a>
+The same pr also introduces a different way to rollback, which doesn't rely on foreign keys and
+indexes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A
+conservative number of these will be included in the next release and the rest can be found in
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/7" target="_blank" rel="noopener noreferrer">performance view</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="migrations-and-resyncing">Migrations and resyncing<a class="hash-link" href="#migrations-and-resyncing" title="Direct link to heading">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also
+introduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release">Release<a class="hash-link" href="#release" title="Direct link to heading">​</a></h3><p>The release has been mostly cherry-picked from master
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a> and its scope can be seen
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/6" target="_blank" rel="noopener noreferrer">release view</a></p>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-10-28-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-28-hydra"/>
+        <updated>2022-10-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team completed several user experience improvements to the
+<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head
+states by publishing release version
+<a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>.
+Besides this, they met with researchers on topic of the HeadV1 specification and
+kicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Have a first plutus script gap closed <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-10-28-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-28-network"/>
+        <updated>2022-10-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which
+fortunately hasn't been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with
+the scientists on eclipse evasion.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-network-stack">P2P Network Stack<a class="hash-link" href="#p2p-network-stack" title="Direct link to heading">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer
+sharing.  We found and fixed an important bug recently introduced in one of the
+components of p2p networking stack (fortunately never released).  Together with
+a fix, we designed a unit test diffusion simulation as well as quickcheck
+property test (both could reproduce it). We also changed the code in a way that
+if such a bug is reintroduced in the future, it will be obvious to diagnose.
+For more see:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4067" target="_blank" rel="noopener noreferrer">ouroboros-network#4067</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4086" target="_blank" rel="noopener noreferrer">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where
+unlike what we see on the mainnet.  We found a possible misconfiguration of the
+cluster (caused by 0 TTL on domain names), which could be the direct cause of
+it.  We wrote a PR which rules out such misconfiguration.  We are awaiting on
+the next benchmarking results.  See more at:</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">ouroboros-network#4120</a>
+includes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started
+working toward integration these changes against the release branch of
+<code>cardano-node</code>.  Early next week we ought to be able to have an early version
+of <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">P2P - Single
+Relay</a>
+issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus">Consensus<a class="hash-link" href="#consensus" title="Direct link to heading">​</a></h3><p>We identified and fixed missing error reporting in consensus
+initialisation phase.  See more at
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">ouroboros-network#4015</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for
+node operators.  This includes updating severities of some of the traces as
+well as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">cardano-node#4563</a>.</li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4561" target="_blank" rel="noopener noreferrer">cardano-node#4561</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early
+implementation which will be reviewed and analysed in next weeks.  We started
+working on <code>cardano-node</code> integration.  We need
+<a href="https://github.com/input-output-hk/cardano-node/pull/4392" target="_blank" rel="noopener noreferrer">PR #4392</a> to be merged
+before such integration will be able to land in <code>cardano-node</code>, although this
+is <em>not blocking</em> us currently.  See more at:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">ouroboros-network#4019</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and
+Nick Frisby from the consensus team.  We discussed high lever design of the
+eclipse evasion scheme, which is important for the design and implementation of
+<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.
+A single <a href="https://github.com/input-output-hk/io-sim/pull/32" target="_blank" rel="noopener noreferrer">PR</a> which added
+a few missing instances of the <code>STM</code> monad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to
+accept contributions from 3rd parties).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril-cardano-integration">Mithril Cardano Integration<a class="hash-link" href="#mithril-cardano-integration" title="Direct link to heading">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate
+mithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>
+diffusion layer.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & Tracing Team Update]]></title>
+        <id>2022-10-28-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-28-performance-and-tracing"/>
+        <updated>2022-10-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>The new tracing system public release is getting closer, as we're resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul>]]></content>
+        <author>
+            <name>Serge Kosyrev</name>
+            <uri>https://github.com/deepfire</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Team Update]]></title>
+        <id>2022-08-12-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre"/>
+        <updated>2022-10-28T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra
+with Cicero, and a new version of Spongix.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">OpenZiti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href="https://github.com/input-output-hk/bitte/compare/zt" target="_blank" rel="noopener noreferrer">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href="https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994" target="_blank" rel="noopener noreferrer">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,
+we're making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte
+clusters utilizing a Ziti ZTNA network overlay to bridge the networking of
+the two environments and get IAM extension to Equinix machine for Nomad
+client onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,
+Controller, Edge Tunnel, and Router is now at [<a href="https://github.com/johnalotoski/openziti-bins" target="_blank" rel="noopener noreferrer">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with
+no issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and
+controller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul
+services</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-integrations">Cicero &amp; Tullia Integrations<a class="hash-link" href="#cicero--tullia-integrations" title="Direct link to heading">​</a></h3><ul><li>Added webhook for [<a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href="https://github.com/input-output-hk/cardano-addresses/pull/205" target="_blank" rel="noopener noreferrer">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href="https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946" target="_blank" rel="noopener noreferrer">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href="https://github.com/input-output-hk/abcirdc/pull/104" target="_blank" rel="noopener noreferrer">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href="https://github.com/input-output-hk/cicero/pull/66" target="_blank" rel="noopener noreferrer">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href="https://github.com/input-output-hk/plutus" target="_blank" rel="noopener noreferrer">plutus</a>]
+[<a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer">cardano-prelude</a>], and [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>].</li><li>Merged [<a href="https://github.com/input-output-hk/cardano-base/pull/323" target="_blank" rel="noopener noreferrer">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href="https://github.com/input-output-hk/cardano-ogmios/pull/5" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-explorer-app/pull/427" target="_blank" rel="noopener noreferrer">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3097" target="_blank" rel="noopener noreferrer">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-node/pull/4489" target="_blank" rel="noopener noreferrer">cardano-node-pull-4489</a>] to add Tullia and Cicero, including
+OS-agnostic jobs.</li><li>Opened [<a href="https://github.com/input-output-hk/ouroboros-network/pull/4108" target="_blank" rel="noopener noreferrer">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href="https://github.com/input-output-hk/plutus/pull/4918" target="_blank" rel="noopener noreferrer">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href="https://github.com/input-output-hk/abcirdc/pull/97" target="_blank" rel="noopener noreferrer">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-features">Cicero &amp; Tullia Features<a class="hash-link" href="#cicero--tullia-features" title="Direct link to heading">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>] build
+correctly.</li><li>Better tullia CUE lib default for tags [<a href="https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245" target="_blank" rel="noopener noreferrer">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>'s upstreams. This is now
+considered a public cache again, and without it some Cicero evaluations had
+to build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in
+JSON files.</li><li>Fixed running into kernel arg limit by reading tullia's DAG from a file</li><li>Merged [<a href="https://github.com/input-output-hk/tullia/pull/9" target="_blank" rel="noopener noreferrer">tullia-pull-9</a>] that fixes several issues related to error reporting.
+and escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports
+the full HTTP binary cache protocol but still lacks comprehensive testing and
+some tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so
+Spongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugs">Bugs<a class="hash-link" href="#bugs" title="Direct link to heading">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status
+to get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for
+codependent actions.</li><li>Fixed tullia task order bug in [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href="https://github.com/input-output-hk/tullia/pull/7" target="_blank" rel="noopener noreferrer">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href="https://github.com/input-output-hk/bitte-cells/pull/40" target="_blank" rel="noopener noreferrer">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related
+to token rotation.</li></ul>]]></content>
+        <author>
+            <name>Michael Fellinger</name>
+            <uri>https://github.com/manveru</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Crypto Team Update]]></title>
+        <id>2022-10-27-crypto</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-27-crypto"/>
+        <updated>2022-10-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level overview]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to
+meeting the <a href="https://github.com/input-output-hk/cardano-base/issues/315" target="_blank" rel="noopener noreferrer">acceptance criteria</a> in cardano-base,
+which lacks some editorial comments on the style of dQuandrant's PR, the inclusion of one additional test, and
+we are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,
+but also progressing on the implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp-built-ins">SECP built-ins<a class="hash-link" href="#secp-built-ins" title="Direct link to heading">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/313" target="_blank" rel="noopener noreferrer">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href="https://github.com/cardano-foundation/CIPs/pull/250" target="_blank" rel="noopener noreferrer">PR 250</a> was merged</li><li>The unit-tests <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul>]]></content>
+        <author>
+            <name>Iñigo Querejeta Azurmendi</name>
+            <uri>https://github.com/iquerejeta</uri>
+        </author>
+        <category label="crypto" term="crypto"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-10-21-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-21-hydra"/>
+        <updated>2022-10-21T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the
+new HeadV1 specification, completing a list the of identified gaps between
+specification and implementation while doing so. In the wake of the recent
+demonstration of SundaeSwap running their DEX in a Hydra Head, they met with
+them to capture feature ideas &amp; incorporate their feedback on the roadmap, as
+well as potential research avenues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href="https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022" target="_blank" rel="noopener noreferrer">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href="https://github.com/input-output-hk/hydra-poc/issues/538" target="_blank" rel="noopener noreferrer">#538</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-10-19-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-19-node-cli-api"/>
+        <updated>2022-10-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h1>2022-10-19 - 2022-11-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node's mempool for the following information:</p><ul><li>Ask the node about the current mempool's capacity and sizes</li><li>Request the next transaction from the mempool's current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4554" target="_blank" rel="noopener noreferrer">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4568" target="_blank" rel="noopener noreferrer">Add ToJSON and FromJSON instances for Address</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4565" target="_blank" rel="noopener noreferrer">Export TxIns type alias from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4534" target="_blank" rel="noopener noreferrer">Export more generators from cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-submit-api">cardano-submit-api<a class="hash-link" href="#cardano-submit-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4566" target="_blank" rel="noopener noreferrer">Add tx_submit_fail_count metric</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4549" target="_blank" rel="noopener noreferrer">Upgrade to cabal-3.8.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4613" target="_blank" rel="noopener noreferrer">Update building-the-node-using-nix.md</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li>None</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-10-18-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-18-consensus"/>
+        <updated>2022-10-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High-level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for
+different aspects of the UTxO HD prototype: era transitions, mempool, and
+backing store. Thanks to these tests we were able to uncover a bug in the
+prototype. On the Genesis front, we benchmarked a different version of the
+ChainSync jumping prototype to try to improve its performance, but this did not
+result in any noticeable speedup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This
+uncovered a bug in the range-read implementation of the LMDB backing
+store.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that
+spreads out the ChainSync updates over a longer period of time. This did not
+result in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no
+conclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged
+the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">mempool
+rewrite</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="era-transition-property-tests">Era transition property tests<a class="hash-link" href="#era-transition-property-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4043" target="_blank" rel="noopener noreferrer">Cardano era transition property
+tests</a>,
+which are needed for making sure that the ledger tables get updated in the
+right way when we move from one era to the next. There are at the moment two
+important transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron
+state (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding
+the remaining ones.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="mempool-state-machine-tests">Mempool state-machine tests<a class="hash-link" href="#mempool-state-machine-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4044" target="_blank" rel="noopener noreferrer">state-machine property tests for the
+mempool</a>.
+The mempool is currently tested via pure property tests, and use a ledger
+state without tables. With the introduction of UTxO HD, testing the concurrent
+behavior of the mempool became of crucial importance (eg now we have to
+acquire locks to flush the backing store). In addition, we need to test a
+ledger state with tables. These needs led to the creation of a new set of
+property tests. In particular we aim to run parallel state-machine tests that
+exercise the mempool in a way similar to how the node would make use of it.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We started working on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">state-machine tests for the backing
+store</a> that UTxO
+HD uses. The property tests uncovered errors in the range-reads implementation
+of the LMDB backing store. To facilitate fixing this bug, we made
+<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">changes</a> to the Haskell
+LMDB bindings.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by
+using more capabilities, we implemented a way to spread out the ChainSync
+updates over a larger period instead of firing them all at the same time. This
+didn't result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo
+peer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule
+out/confirm overhead by non-ChainSync (mainly BlockFetch) related components.
+This results in era-specific behavior (speed is like the prototype in Byron, but
+like the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg" width="654" height="459" class="img_ev3q"></p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Hydra Team Update]]></title>
+        <id>2022-10-14-hydra</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-14-hydra"/>
+        <updated>2022-10-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks "past the opening of a Head". We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Last week we thought we were done with <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> in response.</li><li>Enhanced CI to publish test results <a href="https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results" target="_blank" rel="noopener noreferrer">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href="https://github.com/input-output-hk/hydra-poc/issues/200" target="_blank" rel="noopener noreferrer">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Have the CI build macos artifacts</li></ul>]]></content>
+        <author>
+            <name>Sebastian Nagel</name>
+            <uri>https://github.com/ch1bo</uri>
+        </author>
+        <category label="hydra" term="hydra"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-10-14-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-14-ledger"/>
+        <updated>2022-10-14T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team is still primarily focused on addressing
+<a href="https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22" target="_blank" rel="noopener noreferrer">technical</a>
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/3" target="_blank" rel="noopener noreferrer">debt</a>.
+We now have the infrastructure for versioning our serialization schemes,
+which we continue to put into action.
+We have made first steps towards getting proper support for the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+(in particular, we've added nix builds and
+continuous integration support).
+We are wrapping up an investigation of the performance of a critical
+function used by the consensus layer for leader checks.
+Finally, we are improving the packaging and versioning of our code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of
+our code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that
+much of it should live in <code>cardano-ledger-core</code>.
+We continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3059" target="_blank" rel="noopener noreferrer">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.
+The inability to do this has caused us a lot difficulties,
+such as [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>].
+We are still in the process of switching to the versioned serialization scheme
+(such as [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3078" target="_blank" rel="noopener noreferrer">pull-3078</a>]),
+but the infrastructure was completed in [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3063" target="_blank" rel="noopener noreferrer">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/19" target="_blank" rel="noopener noreferrer">pull-19</a>]</li><li>A separate team is helping bring support for
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>
+to all the cardano-node repositories.
+We have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4.
+We have been helping out with this effort.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress-technical-debt">In-progress Technical Debt<a class="hash-link" href="#in-progress-technical-debt" title="Direct link to heading">​</a></h3><p>We also have several fairly large pull-requests in review
+that we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,
+we continue to remove <code>HasField</code> instances in place of using micro-lenses.
+The protocol parameters, in particular, are being worked on. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3045" target="_blank" rel="noopener noreferrer">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3062" target="_blank" rel="noopener noreferrer">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance
+of the TICKF transition. We have some improvements to the computatation
+as well. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>]</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-10-05-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-05-consensus"/>
+        <updated>2022-10-05T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[High level summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on improving the
+performance of the ChainSync jumping logic, which is needed for Genesis. We also
+rewrote the implementation of the mempool in the UTxO HD prototype which solved
+the issues that prevented us from running system level benchmarks. Also on the
+UTxO HD front, we have an improved implementation of the sequence-of-differences
+(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for
+the UTxO HD feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the
+baseline performance. In particular, the prototype seems to benefit from the
+extra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This
+rewrite was required due to performance problems we observed when running the
+<a href="https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51" target="_blank" rel="noopener noreferrer">workbench</a>.
+These performance problems prevented us from running system level benchmarks.
+The rewrite solved these issues. After the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">UTxO-HD: mempool
+rewrite</a> PR is
+merged, we will contact the Benchmarking team so that they run the system
+level benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was
+integrated into the UTxO HD prototype. It is pending
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4036" target="_blank" rel="noopener noreferrer">review</a> and
+we also need to run replay and syncing benchmarks to confirm that this will
+deliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3944" target="_blank" rel="noopener noreferrer">The UTxO HD prototype
+inspection</a>
+resulted in a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4045" target="_blank" rel="noopener noreferrer">list of
+tests</a>
+needed for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="additional-information">Additional information<a class="hash-link" href="#additional-information" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,
+we tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg" width="654" height="459" class="img_ev3q"></p><p>Further work includes whether we can tune the prototype to better handle few
+capabilities, or to adapt the default number of capabilities (potentially just
+while syncing).</p>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB Sync Team Update]]></title>
+        <id>2022-10-04-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-04-db-sync"/>
+        <updated>2022-10-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[DBSync Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fast-restarts">Fast restarts<a class="hash-link" href="#fast-restarts" title="Direct link to heading">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>. This has been
+one of db-sync main objectives for this period. Restarts are now very fast,
+because db-sync deletes almost nothing from the db, it just replays the ledger rules until it
+reaches the tip of the db. The fix also improves reconnection speed, in cases where the node
+restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a
+deployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="property-based-testing">Property based testing<a class="hash-link" href="#property-based-testing" title="Direct link to heading">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1269" target="_blank" rel="noopener noreferrer">1269</a>. These tests use empty or
+almost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">RollForward Int</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RollBack BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StopDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StartDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RestartNode</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AssertBlockNo BlockNo</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block
+that fits on the current chain. These real commands are executed against db-sync using the mock
+chain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync
+which looks like this:</p><div class="language-haskell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-haskell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">  Model</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    { serverTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSyncTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsIsOn :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsHasSynced :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    }</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We handled a number of tech debt in
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1275" target="_blank" rel="noopener noreferrer">1275</a>
+This improves the code format of db-sync, deletes many queries that were never used and groups the
+others. This tech debt resolution not only improves the experience of working in db-sync, but can
+facilitate some of our other objectives, as it makes it very explicit which queries are used
+during syncing and which indexes are necessary.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="smash">Smash<a class="hash-link" href="#smash" title="Direct link to heading">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1276" target="_blank" rel="noopener noreferrer">1276</a>.
+The issue which is described in
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1270" target="_blank" rel="noopener noreferrer">1270</a></p>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-10-04-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-10-04-node-cli-api"/>
+        <updated>2022-10-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Node-Api-Cli Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-update">Node-Api-Cli Update<a class="hash-link" href="#node-api-cli-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-04---2022-10-18">2022-10-04 - 2022-10-18<a class="hash-link" href="#2022-10-04---2022-10-18" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The majority of the team's time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4504" target="_blank" rel="noopener noreferrer">GHC 9.2.4 preparations</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h4><ul><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4491" target="_blank" rel="noopener noreferrer">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4501" target="_blank" rel="noopener noreferrer">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4526" target="_blank" rel="noopener noreferrer">Fix MacOS GHA CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.34.4</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api" term="cli-api"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-09-30-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-30-ledger"/>
+        <updated>2022-09-30T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Ledger Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have continued focusing nearly entirely on addressing technical debt.
+A lot of design work has begun for the next ledger era,
+but we do not yet have anything concrete to share.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-issues-completed">Technical debt issues completed<a class="hash-link" href="#technical-debt-issues-completed" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/1676" target="_blank" rel="noopener noreferrer">issue-1676</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>] We have finally removed the ledger dependency on the
+<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency
+that we did not want to maintain. It was a bit difficult to remove, and we had
+to coordinate removing it from cardano-base.
+A lot ended up going into <a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>, due to the coordination effort, and we ended
+up updating Plutus as well.
+This means that we've now also made a lot of progress on the problematic cost model serialization
+issues described in <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+In particular, after we resolve <a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>, we will not have to wait an epoch before
+releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3046" target="_blank" rel="noopener noreferrer">issue-3046</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3055" target="_blank" rel="noopener noreferrer">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3047" target="_blank" rel="noopener noreferrer">issue-3047</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3054" target="_blank" rel="noopener noreferrer">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3044" target="_blank" rel="noopener noreferrer">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates
+were adding approximately 20 minutes to our compile time!</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2932" target="_blank" rel="noopener noreferrer">issue-2932</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3036" target="_blank" rel="noopener noreferrer">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we
+have added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.
+Most classes defined in the era should go in this new module.
+We also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>
+modules from each era.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-in-progress">Technical debt in progress<a class="hash-link" href="#technical-debt-in-progress" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3034" target="_blank" rel="noopener noreferrer">issue-3034</a>][<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>][<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where
+all the time is being spent on executing the <code>TICKF</code> transition.
+The consolidation of the per-stake-credential stake distribution to the per-stake-pool
+distribution does seem to account for a large amount of time (near a second as written, which we
+have down to about half a second with some optimizations),
+but this does not account for everything.
+Applying the reward update may also be a big contributing factor.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3033" target="_blank" rel="noopener noreferrer">pull-3033</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3038" target="_blank" rel="noopener noreferrer">pull-3038</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3041" target="_blank" rel="noopener noreferrer">pull-3041</a>] A separate team is working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>
+do not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger
+serializers.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-09-27-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-27-network"/>
+        <updated>2022-09-27T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See
+<a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in
+progress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3980" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3905" target="_blank" rel="noopener noreferrer">issue input-output-hk/cardano-node#3905</a> in
+the simulation testing of diffusion
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4004" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.
+When deploying we found an issue in the
+<a href="https://github.com/input-output-hk/cardano-node/issues/3752" target="_blank" rel="noopener noreferrer"><code>RTView</code></a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-consensus">Ouroboros Consensus<a class="hash-link" href="#ouroboros-consensus" title="Direct link to heading">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during
+intiialisation.  This was fixed in
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#4015</a>
+As part of this pull request we also changed that all exceptions rethrown by
+the connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="some-older-items-which-were-not-announced">Some older items, which were not announced<a class="hash-link" href="#some-older-items-which-were-not-announced" title="Direct link to heading">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options
+where not set for sockets passed through socket activation).
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#3979</a>
+This fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,
+<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,
+<code>traceSocketPathConnect</code> and <code>stateDir</code> options.
+<a href="https://github.com/input-output-hk/cardano-node/pull/4196" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2797" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2797</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2650" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2650</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3436" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#3436</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2588" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2588</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2587" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2587</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2586" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href="https://github.com/input-output-hk/io-sim/pull/24" target="_blank" rel="noopener noreferrer">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href="https://github.com/input-output-hk/io-sim/pull/25" target="_blank" rel="noopener noreferrer">PR input-output-hk/io-sim#25</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:
+<a href="https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem" target="_blank" rel="noopener noreferrer">coot/typed-protocols-rewrite-StateToken-problem</a>.
+That's too be resolved in order to push forward review of the redesign in
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:
+<a href="https://github.com/input-output-hk/typed-protocols/pull/11" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="input-endorsers-simulation">Input Endorsers Simulation<a class="hash-link" href="#input-endorsers-simulation" title="Direct link to heading">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU
+(block validation). This is interesting to check that we're not overloading
+the CPU block validation capacity, or network link capacity. Or alternatively
+to observe the behaviour in an overload situation if we set the block
+generation rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of
+links are being used at any one time, and shows that once the system "warms
+up" and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple
+charts, titles etc on screen at once and scale them to whatever screen or
+video resolution we like without having to tweak numbers (this example is
+scaled to fit 1080HD video resolution).</p></li></ul><div style="width:640px;height:360px"></div>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-09-20-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus"/>
+        <updated>2022-09-20T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[- We proposed a fix for the performance degradation observed when running]]></summary>
+        <content type="html"><![CDATA[<ul><li>We proposed a fix for the performance degradation observed when running
+distributed multi-node benchmarks in the UTxO HD feature branch. While this
+fixed the problems observed when running local benchmarks, it broke the
+<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to
+start redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of
+diff-sequences required by the UTxO HD feature based on the idea of
+anti-diffs. This alternative implementation is close to being merged, and the
+next step is to integrate this to the UTxO HD branch, so that we can run
+ad-hoc replaying and syncing from scratch benchmarks and compare these with
+the baseline. The micro-benchmarks we elaborated for the alternative
+implementation show speedups of up to 4x, so we are optimistic about the
+performance of replaying and syncing from scratch benchmarks, however it is
+important to notice that <em>due to the nature of UTxO HD</em> we will still be
+slower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for
+review.</li><li>We implemented a prototype for the happy path of Genesis' ChainSync Jumping
+(CSJ). The prototype is slower than the baseline, however it is not the latest
+version of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031" target="_blank" rel="noopener noreferrer">stopped</a> since
+priorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pr-4014</a>. To this end, we made use of a modified version of our
+<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano
+mainnet chain, and we can see that block tick and application take
+substantially longer at epoch boundaries, although there are a couple of slots
+during an epoch in which these computations take more than normal. We notified
+the ledger team about these findings. We will use this modified version of
+<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in
+performance observed in the benchmarks. We run the <code>make forge-stress</code>
+benchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn't make a notable difference in the outcome
+(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction
+validation which is a violation of the <code>LocalTxSubmission</code> protocol
+contract and therefore if we continued on that route, the impact would
+have been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal
+state was buggy and under certain circumstances it seemed to lock.
+Reverting the mempool internal state to be stored in a <code>TVar</code> seems to
+solve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones
+from the baseline.</p></li></ul></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/3997" target="_blank" rel="noopener noreferrer">The anti-diff prototype (PR
+#3997)</a> has
+been reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4010" target="_blank" rel="noopener noreferrer">issue
+#4010</a>)
+to integrate the anti-diff prototype in the various <code>consensus</code> packages
+was created. A first version of the integration exists, and all tests
+pass. A next step is to get some indication of the "real" performance gain
+by profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync
+Jumping (CSJ) prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3987" target="_blank" rel="noopener noreferrer">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)
+number of servers periodically while syncing. These servers are offered
+jump requests via the ChainSync protocol (hence the name), which they can
+accept or decline. If a peer declines, the Genesis rule allows us to
+determine whether a node actually has a better chain.</p></li><li><p>The "happy path" is when no peer declines a jump. We want this to have
+close to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to
+test in various configurations (number of peers, latency, bandwidth) to
+tune the performance of ChainSync jumping, i.e. how complicated our logic
+of choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to
+<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg" width="654" height="459" class="img_ev3q"></p><p>It is slower by about ~30%, but it is not the latest version of the
+prototype, and the jump interval is very small, making CSJ more of a
+bottleneck.</p></li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3990" target="_blank" rel="noopener noreferrer">PR 3990</a>).</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[DB Sync Team Update]]></title>
+        <id>2022-09-19-db-sync</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-19-db-sync"/>
+        <updated>2022-09-19T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[DBSync Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tag">New Tag<a class="hash-link" href="#new-tag" title="Direct link to heading">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last
+release 13.0.4. It is currently under testing.
+The Changelog is
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305" target="_blank" rel="noopener noreferrer">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn't include a total collateral field.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1248" target="_blank" rel="noopener noreferrer">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1247" target="_blank" rel="noopener noreferrer">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but
+could result in the wrong CBOR encoding being inserted.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1217" target="_blank" rel="noopener noreferrer">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs
+for different networks, these are directly fetched from the cardano world.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1254" target="_blank" rel="noopener noreferrer">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1260" target="_blank" rel="noopener noreferrer">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made the db-sync <a href="https://github.com/orgs/input-output-hk/projects/52/views/1" target="_blank" rel="noopener noreferrer">board public</a>, so
+everyone can have access on the issues we prioritise.
+We also added new tasks to the board, some of them could be approachable to newcomers or people who
+want to contribute.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-tech-debt-and-new-features">Progress on tech debt and new features<a class="hash-link" href="#progress-on-tech-debt-and-new-features" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1223" target="_blank" rel="noopener noreferrer">1223</a> was merged, which removes the
+foreign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1250" target="_blank" rel="noopener noreferrer">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>.
+This allows db-sync to restart much faster, without the need to delete data and reinsert them. In
+the future it can also facilitate migrations in cases where the ledger snapshots have a breaking
+change, without the need to resync everything from genesis.</p></li></ul>]]></content>
+        <author>
+            <name>Kostas Dermentzis</name>
+            <uri>https://github.com/kderme</uri>
+        </author>
+        <category label="db-sync" term="db-sync"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-09-16-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-16-ledger"/>
+        <updated>2022-09-16T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Ledger Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3032" target="_blank" rel="noopener noreferrer">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of
+confusion), and added some related support to the fledgling ledger API.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3016" target="_blank" rel="noopener noreferrer">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3017" target="_blank" rel="noopener noreferrer">3017</a>.</li><li>We removed code duplication related to the input data hashes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3018" target="_blank" rel="noopener noreferrer">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our
+CI to time out.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3020" target="_blank" rel="noopener noreferrer">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3023" target="_blank" rel="noopener noreferrer">3023</a>,
+<a href="https://github.com/input-output-hk/cardano-ledger/pull/3031" target="_blank" rel="noopener noreferrer">3031</a>,
+and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3028" target="_blank" rel="noopener noreferrer">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3024" target="_blank" rel="noopener noreferrer">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific
+choice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3027" target="_blank" rel="noopener noreferrer">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric
+types that will compose better in the future and which simplifies the constraints.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3029" target="_blank" rel="noopener noreferrer">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a
+given transaction. This is a much needed cleanup to prevent future mistakes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3019" target="_blank" rel="noopener noreferrer">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to
+fail in CI.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major
+protocol version, and also address a
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">problem</a>
+that we current have evolving the cost models.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3030" target="_blank" rel="noopener noreferrer">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely
+the lack of some serialization instances.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3022" target="_blank" rel="noopener noreferrer">3022</a>.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-09-01-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-09-01-ledger"/>
+        <updated>2022-09-01T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Ledger Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been
+focused on two main things: a new ledger era and technical debt.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-minimal-ledger-era">New minimal ledger era<a class="hash-link" href="#new-minimal-ledger-era" title="Direct link to heading">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical
+to the <code>babbage</code> era. This has been the first time that we have been able to see
+what a minimal ledger era looks like. We have finished this task, modulo any
+integration issues that might come up. The only thing that the <code>conway</code> era
+does differently from the <code>babbage</code> era is provide support for rotating
+the master keys using the hardfork combinator's state translation.
+We may end up adding features to the <code>conway</code> era, but it is a nice exercise
+seeing what it looks like to get a minimal ledger era supported in all the
+downstream components.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="addressing-technical-debt">Addressing technical debt<a class="hash-link" href="#addressing-technical-debt" title="Direct link to heading">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the
+repository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.
+With hindsight on our side, we now have something much more organized and
+easier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more
+uniform, avoid certain confusions that plagued us, and are clearer in where
+they are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you
+do not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of
+values that can be minted in a transaction no longer allow for Lovelace
+in the type, and some functions which used to handle both timelock scripts
+and plutus script now correctly enoforce at the type level that only one of
+them can be used.</li><li>We made our generators so that they now produce a much richer set of
+valid serializations. There is room within CBOR to serialize the same
+data structure in multiple ways, and it is helpful to have the generators
+use a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Team Update]]></title>
+        <id>2022-08-31-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-08-31-consensus"/>
+        <updated>2022-08-31T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Executive summary]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A
+possible bug was identified. Work is ongoing to make sure the property-tests
+cover all the relevant cases.</li><li>We implemented and benchmarked the "anti-diff" prototype to speed up the UTxO
+HD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across
+several scenarios. Note that: <a href="https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html" target="_blank" rel="noopener noreferrer">"Data reported by <code>tasty-bench</code> is only of
+indicative and comparative significance."</a>.
+We are investigating additional performance improvements. The "anti-diff"
+prototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and
+<code>ChainSync</code> jumping optimization.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3962" target="_blank" rel="noopener noreferrer">Issue #3963</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">PR
+#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which
+data should be changed in the Conway era. As a result, a new technical debt
+issue was raised, which does not block the integration of the Conway era
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3976" target="_blank" rel="noopener noreferrer">Issue #3976</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3954" target="_blank" rel="noopener noreferrer">Issue #3954</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests" target="_blank" rel="noopener noreferrer">branch</a>: The functionality of a
+backing store, which is the interface to the on-disk part of ledger state in
+UTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some
+functionalities remain untested, e.g., reads of ranges of keys. As such, we
+have implemented <code>quickcheck-state-machine</code> tests that exercise backing stores
+directly. The tests are reusable for different backing store implementations
+because the tests are implementation-agnostic: Any backing store that conforms
+to the backing store interface can be plugged into the tests. Work is still
+ongoing to label/monitor the tests, such that we can verify that interesting
+cases are being tested. Furthermore, a possible bug has been identified in the
+LMDB backing store with respect to range reads, though the bug has not been
+resolved yet.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3946" target="_blank" rel="noopener noreferrer">Issue #3946</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs" target="_blank" rel="noopener noreferrer">branch</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3882" target="_blank" rel="noopener noreferrer">PR #3882</a>: The
+"anti-diff" prototype proposes an alternative approach to keeping track of
+sequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences
+are a component of the in-memory parts of the ledger state in UTxO-HD. Since
+the consensus code often requires the cumulative diff of a sequence of diffs,
+the current implementation "caches" cumulative diffs of each subtree in the
+diff sequence. This caching allows relatively fast reconstruction of the total
+cumulative diff, but this caching proved to incur a non-negligible cost: when
+we manipulate diff sequences through splits and appends, we force re-computing
+a logarithmic number of caches. This is problematic, since we often split and
+append in consensus: we split when we flush diffs to a backing store or when
+we roll back blocks, and we append when pushing blocks. The new approach
+should reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the "anti-diff" prototype: we
+first generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or
+<code>Rollback</code>) through a simulation, after which we measure the performance of
+applying the commands to a diff sequence. In this context, <code>Forward</code> means
+forwarding of values through a diff, whereas <code>Rollback</code> means switching to
+a different fork by rolling back diffs/blocks and pushing new ones.
+Moreover, we compare the performance for the two implementations: the
+"legacy" approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the
+benchmark's configuration to obtain more definitive results. After a
+discussion with @dcoutts and the consensus team about this configuration
+(e.g., number of commands generated, choice of the security parameter <code>k</code>),
+the benchmarks should now be closer to the realistic setting. The following
+configuration specifies the default configuration that is used in the
+benchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-read-results">How to read results<a class="hash-link" href="#how-to-read-results" title="Direct link to heading">​</a></h3><p>Note: this section uses documentation from the
+<a href="https://hackage.haskell.org/package/tasty-bench" target="_blank" rel="noopener noreferrer">tasty-bench</a> package to
+explain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AntiDiff:                               OK (18.27s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">LegacyDiff:                             OK (32.73s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff
+prototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),
+its predicted mean CPU time was <code>2.527</code> seconds and means of individual
+samples do not often diverge from it further than <code>± 47</code> milliseconds
+(double standard deviation). We also configure the RTS to collect GC
+statistics, which enables <code>tasty-bench</code> to estimate and report memory usage.
+This data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,
+<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first
+benchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a
+total of <code>544 MB</code> of memory were copied, and that the peak memory in usage
+was <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for
+both the anti-diff and legacy approaches: In this case, the mean CPU time
+for the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy
+approach. Conversely, the mean CPU time for the legacy approach is
+<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will
+call <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to
+noise, randomness, the specific configuration parameters, and the whims
+of statistics. Data reported by <code>tasty-bench</code> is only of indicative and
+comparative significance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="results">Results<a class="hash-link" href="#results" title="Direct link to heading">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and
+legacy approaches 5 times. We run the benchmarks 5 times to get an indication
+of whether the results are similar across multiple runs. Furthermore, we
+calculate the accompanying <em>ranges</em> (if applicable) of improvement factors and
+speedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for
+the anti-diff approach compared to the legacy approach.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="default-configuration">Default configuration<a class="hash-link" href="#default-configuration" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks">No rollbacks<a class="hash-link" href="#no-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="only-small-rollbacks">Only small rollbacks<a class="hash-link" href="#only-small-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks-larger-flushes-every-100-pushes">No rollbacks, larger flushes (every 100 pushes)<a class="hash-link" href="#no-rollbacks-larger-flushes-every-100-pushes" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and
+the ChainSync Jumping optimization. In particular, this includes a proof
+sketch that the latter preserves liveness and safety in all cases (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3964" target="_blank" rel="noopener noreferrer">Issue
+3964</a>).<ul><li>@nfrisby's main realization during this sprint was that he had been
+focusing so far on the case where the selected chain is an extension of
+the intersection of our peers' ChainSync candidates.</li><li>This is the main case, ie an "absorbing" state, but it's not the only
+case.</li><li>The new proof sketch begins by case splitting on that predicate, and
+that made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the "happy path" <code>ChainSync</code> Jumping prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3960" target="_blank" rel="noopener noreferrer">Issue
+3960</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..
+Nightly CI runs have far more lax time constraints, which gives the option to
+run significantly more property tests than in our regular CI. To this end, we
+merged a PR to easily adapt the number of tests globally (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3947" target="_blank" rel="noopener noreferrer">PR
+#3947</a>).</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-08-12-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/2022-08-12-network"/>
+        <updated>2022-08-12T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[The networking team took an active part in the project iteration (PI) planning]]></summary>
+        <content type="html"><![CDATA[<p>The networking team took an active part in the project iteration (PI) planning
+session, see cardano-node <a href="https://github.com/orgs/input-output-hk/projects/39" target="_blank" rel="noopener noreferrer">backlog</a> for detailed
+outcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/3859" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3859</a> which
+sets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3852" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3852</a>.
+The above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and
+identified some deployment hiccups.  We identified some bugs in the RT view
+which were registered by the maintainers.
+<a href="https://github.com/input-output-hk/ouroboros-network-ops/pull/4" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3921" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3922" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to
+identify and fix a bug in the simulator.  The simulation contains 50 nodes.
+Dashed lines indicate and established connection, while solid lines indicate
+a TCP connection with fully open TCP window.</p></li></ul><div style="width:640px;height:360px"></div>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+</feed>
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3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Tutorial Intro</span><meta itemprop="position" content="1"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Tutorial Intro</h1><p>Let&#x27;s discover <strong>Docusaurus in less than 5 minutes</strong>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="getting-started">Getting Started<a class="hash-link" href="#getting-started" title="Direct link to heading">​</a></h2><p>Get started by <strong>creating a new site</strong>.</p><p>Or <strong>try Docusaurus immediately</strong> with <strong><a href="https://docusaurus.new" target="_blank" rel="noopener noreferrer">docusaurus.new</a></strong>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-youll-need">What you&#x27;ll need<a class="hash-link" href="#what-youll-need" title="Direct link to heading">​</a></h3><ul><li><a href="https://nodejs.org/en/download/" target="_blank" rel="noopener noreferrer">Node.js</a> version 16.14 or above:<ul><li>When installing Node.js, you are recommended to check all checkboxes related to dependencies.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="generate-a-new-site">Generate a new site<a class="hash-link" href="#generate-a-new-site" title="Direct link to heading">​</a></h2><p>Generate a new Docusaurus site using the <strong>classic template</strong>.</p><p>The classic template will automatically be added to your project after you run the command:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> init docusaurus@latest my-website classic</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>You can type this command into Command Prompt, Powershell, Terminal, or any other integrated terminal of your code editor.</p><p>The command also installs all necessary dependencies you need to run Docusaurus.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="start-your-site">Start your site<a class="hash-link" href="#start-your-site" title="Direct link to heading">​</a></h2><p>Run the development server:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token builtin class-name">cd</span><span class="token plain"> my-website</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> run start</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The <code>cd</code> command changes the directory you&#x27;re working with. In order to work with your newly created Docusaurus site, you&#x27;ll need to navigate the terminal there.</p><p>The <code>npm run start</code> command builds your website locally and serves it through a development server, ready for you to view at http://localhost:3000/.</p><p>Open <code>docs/intro.md</code> (this page) and edit some lines: the site <strong>reloads automatically</strong> and displays your changes.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/category/tutorial---basics"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Tutorial - Basics</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#getting-started" class="table-of-contents__link toc-highlight">Getting Started</a><ul><li><a href="#what-youll-need" class="table-of-contents__link toc-highlight">What you&#39;ll need</a></li></ul></li><li><a href="#generate-a-new-site" class="table-of-contents__link toc-highlight">Generate a new site</a></li><li><a href="#start-your-site" class="table-of-contents__link toc-highlight">Start your site</a></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/cardano-updates/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/cardano-updates/docs/category/tutorial---basics"><span itemprop="name">Tutorial - Basics</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Create a Blog Post</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Create a Blog Post</h1><p>Docusaurus creates a <strong>page for each blog post</strong>, but also a <strong>blog index page</strong>, a <strong>tag system</strong>, an <strong>RSS</strong> feed...</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="create-your-first-post">Create your first Post<a class="hash-link" href="#create-your-first-post" title="Direct link to heading">​</a></h2><p>Create a file at <code>blog/2021-02-28-greetings.md</code>:</p><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">blog/2021-02-28-greetings.md</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token front-matter-block punctuation" style="color:#393A34">---</span><span class="token front-matter-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">slug</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> greetings</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">title</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> Greetings</span><span class="token front-matter-block front-matter yaml language-yaml tag" style="color:#00009f">!</span><span class="token front-matter-block front-matter yaml language-yaml"></span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">authors</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"></span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">  </span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">-</span><span class="token front-matter-block front-matter yaml language-yaml"> </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">name</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> Joel Marcey</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">title</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> Co</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">-</span><span class="token front-matter-block front-matter yaml language-yaml">creator of Docusaurus 1</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">url</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> https</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml">//github.com/JoelMarcey</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">image_url</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> https</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml">//github.com/JoelMarcey.png</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">  </span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">-</span><span class="token front-matter-block front-matter yaml language-yaml"> </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">name</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> Sébastien Lorber</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">title</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> Docusaurus maintainer</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">url</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> https</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml">//sebastienlorber.com</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml">    </span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">image_url</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> https</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml">//github.com/slorber.png</span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">tags</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> </span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">[</span><span class="token front-matter-block front-matter yaml language-yaml">greetings</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">]</span><span class="token front-matter-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token front-matter-block"></span><span class="token front-matter-block punctuation" style="color:#393A34">---</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">Congratulations, you have made your first post!</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">Feel free to play around and edit this post as much you like.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>A new blog post is now available at <a href="http://localhost:3000/blog/greetings" target="_blank" rel="noopener noreferrer">http://localhost:3000/blog/greetings</a>.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/docs/tutorial-basics/create-a-document"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Create a Document</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/tutorial-basics/markdown-features"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Markdown Features</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents 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Document</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Create a Document</h1><p>Documents are <strong>groups of pages</strong> connected through:</p><ul><li>a <strong>sidebar</strong></li><li><strong>previous/next navigation</strong></li><li><strong>versioning</strong></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="create-your-first-doc">Create your first Doc<a class="hash-link" href="#create-your-first-doc" title="Direct link to heading">​</a></h2><p>Create a Markdown file at <code>docs/hello.md</code>:</p><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">docs/hello.md</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token title important punctuation" style="color:#393A34">#</span><span class="token title important"> Hello</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">This is my </span><span class="token bold punctuation" style="color:#393A34">**</span><span class="token bold content">first Docusaurus document</span><span class="token bold punctuation" style="color:#393A34">**</span><span class="token plain">!</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>A new document is now available at <a href="http://localhost:3000/docs/hello" target="_blank" rel="noopener noreferrer">http://localhost:3000/docs/hello</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configure-the-sidebar">Configure the Sidebar<a class="hash-link" href="#configure-the-sidebar" title="Direct link to heading">​</a></h2><p>Docusaurus automatically <strong>creates a sidebar</strong> from the <code>docs</code> folder.</p><p>Add metadata to customize the sidebar label and position:</p><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">docs/hello.md</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token front-matter-block punctuation" style="color:#393A34">---</span><span class="token front-matter-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token front-matter-block"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">sidebar_label</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> </span><span class="token front-matter-block front-matter yaml language-yaml string" style="color:#e3116c">&#x27;Hi!&#x27;</span><span class="token front-matter-block front-matter yaml language-yaml"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token front-matter-block front-matter yaml language-yaml"></span><span class="token front-matter-block front-matter yaml language-yaml key atrule" style="color:#00a4db">sidebar_position</span><span class="token front-matter-block front-matter yaml language-yaml punctuation" style="color:#393A34">:</span><span class="token front-matter-block front-matter yaml language-yaml"> </span><span class="token front-matter-block front-matter yaml language-yaml number" style="color:#36acaa">3</span><span class="token front-matter-block"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token front-matter-block"></span><span class="token front-matter-block punctuation" style="color:#393A34">---</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token title important punctuation" style="color:#393A34">#</span><span class="token title important"> Hello</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">This is my </span><span class="token bold punctuation" style="color:#393A34">**</span><span class="token bold content">first Docusaurus document</span><span class="token bold punctuation" style="color:#393A34">**</span><span class="token plain">!</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>It is also possible to create your sidebar explicitly in <code>sidebars.js</code>:</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">sidebars.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token literal-property property" style="color:#36acaa">tutorialSidebar</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token string" style="color:#e3116c">&#x27;intro&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">    </span><span class="token string" style="color:#e3116c">&#x27;hello&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token literal-property property" style="color:#36acaa">type</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;category&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token literal-property property" style="color:#36acaa">label</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;Tutorial&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token literal-property property" style="color:#36acaa">items</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">&#x27;tutorial-basics/create-a-document&#x27;</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/docs/tutorial-basics/create-a-page"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Create a Page</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/tutorial-basics/create-a-blog-post"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Create a Blog Post</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#create-your-first-doc" class="table-of-contents__link toc-highlight">Create your first Doc</a></li><li><a href="#configure-the-sidebar" 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your site</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/congratulations">Congratulations!</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" aria-expanded="false" href="/cardano-updates/docs/category/tutorial---extras">Tutorial - Extras</a><button aria-label="Toggle the collapsible sidebar category &#x27;Tutorial - Extras&#x27;" type="button" class="clean-btn menu__caret"></button></div></li></ul></nav></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/cardano-updates/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/cardano-updates/docs/category/tutorial---basics"><span itemprop="name">Tutorial - Basics</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Create a Page</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Create a Page</h1><p>Add <strong>Markdown or React</strong> files to <code>src/pages</code> to create a <strong>standalone page</strong>:</p><ul><li><code>src/pages/index.js</code> → <code>localhost:3000/</code></li><li><code>src/pages/foo.md</code> → <code>localhost:3000/foo</code></li><li><code>src/pages/foo/bar.js</code> → <code>localhost:3000/foo/bar</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="create-your-first-react-page">Create your first React Page<a class="hash-link" href="#create-your-first-react-page" title="Direct link to heading">​</a></h2><p>Create a file at <code>src/pages/my-react-page.js</code>:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">src/pages/my-react-page.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">React</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;react&#x27;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">import</span><span class="token plain"> </span><span class="token imports maybe-class-name">Layout</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">from</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;@theme/Layout&#x27;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword module" style="color:#00009f">default</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">MyReactPage</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag class-name" style="color:#00009f">Layout</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text">      </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag" style="color:#00009f">h1</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text">My React page</span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag" style="color:#00009f">h1</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text">      </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag" style="color:#00009f">p</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text">This is a React page</span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag" style="color:#00009f">p</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text">    </span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag class-name" style="color:#00009f">Layout</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>A new page is now available at <a href="http://localhost:3000/my-react-page" target="_blank" rel="noopener noreferrer">http://localhost:3000/my-react-page</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="create-your-first-markdown-page">Create your first Markdown Page<a class="hash-link" href="#create-your-first-markdown-page" title="Direct link to heading">​</a></h2><p>Create a file at <code>src/pages/my-markdown-page.md</code>:</p><div class="language-mdx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">src/pages/my-markdown-page.md</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-mdx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain"># My Markdown page</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">This is a Markdown page</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>A new page is now available at <a href="http://localhost:3000/my-markdown-page" target="_blank" rel="noopener noreferrer">http://localhost:3000/my-markdown-page</a>.</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/docs/category/tutorial---basics"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Tutorial - Basics</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/tutorial-basics/create-a-document"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Create a Document</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents 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class="docPage__5DB"><aside class="theme-doc-sidebar-container docSidebarContainer_b6E3"><div class="sidebar_njMd"><nav class="menu thin-scrollbar menu_SIkG"><ul class="theme-doc-sidebar-menu menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/cardano-updates/docs/intro">Tutorial Intro</a></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist menu__link--active" aria-expanded="true" href="/cardano-updates/docs/category/tutorial---basics">Tutorial - Basics</a><button aria-label="Toggle the collapsible sidebar category &#x27;Tutorial - Basics&#x27;" type="button" class="clean-btn menu__caret"></button></div><ul style="display:block;overflow:visible;height:auto" class="menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/create-a-page">Create a Page</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/create-a-document">Create a Document</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/create-a-blog-post">Create a Blog Post</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link menu__link--active" aria-current="page" tabindex="0" href="/cardano-updates/docs/tutorial-basics/markdown-features">Markdown Features</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/deploy-your-site">Deploy your site</a></li><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class="menu__link" tabindex="0" href="/cardano-updates/docs/tutorial-basics/congratulations">Congratulations!</a></li></ul></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" aria-expanded="false" href="/cardano-updates/docs/category/tutorial---extras">Tutorial - Extras</a><button aria-label="Toggle the collapsible sidebar category &#x27;Tutorial - Extras&#x27;" type="button" class="clean-btn menu__caret"></button></div></li></ul></nav></div></aside><main class="docMainContainer_gTbr"><div class="container padding-top--md padding-bottom--lg"><div class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/cardano-updates/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/cardano-updates/docs/category/tutorial---basics"><span itemprop="name">Tutorial - Basics</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Markdown Features</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Markdown Features</h1><p>Docusaurus supports <strong><a href="https://daringfireball.net/projects/markdown/syntax" target="_blank" rel="noopener noreferrer">Markdown</a></strong> and a few <strong>additional features</strong>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="front-matter">Front Matter<a class="hash-link" href="#front-matter" title="Direct link to heading">​</a></h2><p>Markdown documents have metadata at the top called <a href="https://jekyllrb.com/docs/front-matter/" target="_blank" rel="noopener noreferrer">Front Matter</a>:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">my-doc.md</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">---</span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">id: my-doc-id</span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">title: My document title</span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">description: My document description</span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">slug: /my-custom-url</span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">---</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">## Markdown heading</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">Markdown text with [links](./hello.md)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="links">Links<a class="hash-link" href="#links" title="Direct link to heading">​</a></h2><p>Regular Markdown links are supported, using url paths or relative file paths.</p><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">Let&#x27;s see how to </span><span class="token url" style="color:#36acaa">[</span><span class="token url content" style="color:#36acaa">Create a page</span><span class="token url" style="color:#36acaa">](</span><span class="token url" style="color:#36acaa">/create-a-page</span><span class="token url" style="color:#36acaa">)</span><span class="token plain">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">Let&#x27;s see how to </span><span class="token url" style="color:#36acaa">[</span><span class="token url content" style="color:#36acaa">Create a page</span><span class="token url" style="color:#36acaa">](</span><span class="token url" style="color:#36acaa">./create-a-page.md</span><span class="token url" style="color:#36acaa">)</span><span class="token plain">.</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p><strong>Result:</strong> Let&#x27;s see how to <a href="/cardano-updates/docs/tutorial-basics/create-a-page">Create a page</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="images">Images<a class="hash-link" href="#images" title="Direct link to heading">​</a></h2><p>Regular Markdown images are supported.</p><p>You can use absolute paths to reference images in the static directory (<code>static/img/docusaurus.png</code>):</p><div class="language-md codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-md codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token url operator" style="color:#393A34">!</span><span class="token url" style="color:#36acaa">[</span><span class="token url content" style="color:#36acaa">Docusaurus logo</span><span class="token url" style="color:#36acaa">](</span><span class="token url" style="color:#36acaa">/img/docusaurus.png</span><span class="token url" style="color:#36acaa">)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p><img loading="lazy" alt="Docusaurus logo" src="data:image/png;base64,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" width="200" height="200" class="img_ev3q"></p><p>You can reference images relative to the current file as well, as shown in <a href="/cardano-updates/docs/tutorial-extras/manage-docs-versions">the extra guides</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="code-blocks">Code Blocks<a class="hash-link" href="#code-blocks" title="Direct link to heading">​</a></h2><p>Markdown code blocks are supported with Syntax highlighting.</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">```jsx title=&quot;src/components/HelloDocusaurus.js&quot;</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">function HelloDocusaurus() {</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    return (</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">        &lt;h1&gt;Hello, Docusaurus!&lt;/h1&gt;</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    )</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">}</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">```</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">src/components/HelloDocusaurus.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword" style="color:#00009f">function</span><span class="token plain"> </span><span class="token function maybe-class-name" style="color:#d73a49">HelloDocusaurus</span><span class="token punctuation" style="color:#393A34">(</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token keyword control-flow" style="color:#00009f">return</span><span class="token plain"> </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag" style="color:#00009f">h1</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text">Hello, Docusaurus!</span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag" style="color:#00009f">h1</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="admonitions">Admonitions<a class="hash-link" href="#admonitions" title="Direct link to heading">​</a></h2><p>Docusaurus has a special syntax to create admonitions and callouts:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">:::tip My tip</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">Use this awesome feature option</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">:::</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">:::danger Take care</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">This action is dangerous</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">:::</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><div class="theme-admonition theme-admonition-tip alert alert--success admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M6.5 0C3.48 0 1 2.19 1 5c0 .92.55 2.25 1 3 1.34 2.25 1.78 2.78 2 4v1h5v-1c.22-1.22.66-1.75 2-4 .45-.75 1-2.08 1-3 0-2.81-2.48-5-5.5-5zm3.64 7.48c-.25.44-.47.8-.67 1.11-.86 1.41-1.25 2.06-1.45 3.23-.02.05-.02.11-.02.17H5c0-.06 0-.13-.02-.17-.2-1.17-.59-1.83-1.45-3.23-.2-.31-.42-.67-.67-1.11C2.44 6.78 2 5.65 2 5c0-2.2 2.02-4 4.5-4 1.22 0 2.36.42 3.22 1.19C10.55 2.94 11 3.94 11 5c0 .66-.44 1.78-.86 2.48zM4 14h5c-.23 1.14-1.3 2-2.5 2s-2.27-.86-2.5-2z"></path></svg></span>My tip</div><div class="admonitionContent_S0QG"><p>Use this awesome feature option</p></div></div><div class="theme-admonition theme-admonition-danger alert alert--danger admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 12 16"><path fill-rule="evenodd" d="M5.05.31c.81 2.17.41 3.38-.52 4.31C3.55 5.67 1.98 6.45.9 7.98c-1.45 2.05-1.7 6.53 3.53 7.7-2.2-1.16-2.67-4.52-.3-6.61-.61 2.03.53 3.33 1.94 2.86 1.39-.47 2.3.53 2.27 1.67-.02.78-.31 1.44-1.13 1.81 3.42-.59 4.78-3.42 4.78-5.56 0-2.84-2.53-3.22-1.25-5.61-1.52.13-2.03 1.13-1.89 2.75.09 1.08-1.02 1.8-1.86 1.33-.67-.41-.66-1.19-.06-1.78C8.18 5.31 8.68 2.45 5.05.32L5.03.3l.02.01z"></path></svg></span>Take care</div><div class="admonitionContent_S0QG"><p>This action is dangerous</p></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="mdx-and-react-components">MDX and React Components<a class="hash-link" href="#mdx-and-react-components" title="Direct link to heading">​</a></h2><p><a href="https://mdxjs.com/" target="_blank" rel="noopener noreferrer">MDX</a> can make your documentation more <strong>interactive</strong> and allows using any <strong>React components inside Markdown</strong>:</p><div class="language-jsx codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-jsx codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token keyword module" style="color:#00009f">export</span><span class="token plain"> </span><span class="token keyword" style="color:#00009f">const</span><span class="token plain"> </span><span class="token function-variable function maybe-class-name" style="color:#d73a49">Highlight</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token parameter punctuation" style="color:#393A34">{</span><span class="token parameter">children</span><span class="token parameter punctuation" style="color:#393A34">,</span><span class="token parameter"> color</span><span class="token parameter punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:#393A34">=&gt;</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">(</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag" style="color:#00009f">span</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f">    </span><span class="token tag attr-name" style="color:#00a4db">style</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">backgroundColor</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> color</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">borderRadius</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">&#x27;20px&#x27;</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">color</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">&#x27;#fff&#x27;</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">padding</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">&#x27;10px&#x27;</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript literal-property property" style="color:#36acaa">cursor</span><span class="token tag script language-javascript operator" style="color:#393A34">:</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript string" style="color:#e3116c">&#x27;pointer&#x27;</span><span class="token tag script language-javascript punctuation" style="color:#393A34">,</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">    </span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag" style="color:#00009f">    </span><span class="token tag attr-name" style="color:#00a4db">onClick</span><span class="token tag script language-javascript script-punctuation punctuation" style="color:#393A34">=</span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript arrow operator" style="color:#393A34">=&gt;</span><span class="token tag script language-javascript" style="color:#00009f"> </span><span class="token tag script language-javascript punctuation" style="color:#393A34">{</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">      </span><span class="token tag script language-javascript function" style="color:#d73a49">alert</span><span class="token tag script language-javascript punctuation" style="color:#393A34">(</span><span class="token tag script language-javascript template-string template-punctuation string" style="color:#e3116c">`</span><span class="token tag script language-javascript template-string string" style="color:#e3116c">You clicked the color </span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">${</span><span class="token tag script language-javascript template-string interpolation" style="color:#00009f">color</span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript template-string string" style="color:#e3116c"> with label </span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">${</span><span class="token tag script language-javascript template-string interpolation" style="color:#00009f">children</span><span class="token tag script language-javascript template-string interpolation interpolation-punctuation punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript template-string template-punctuation string" style="color:#e3116c">`</span><span class="token tag script language-javascript punctuation" style="color:#393A34">)</span><span class="token tag script language-javascript" style="color:#00009f"></span><br></span><span class="token-line" style="color:#393A34"><span class="token tag script language-javascript" style="color:#00009f">    </span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag script language-javascript punctuation" style="color:#393A34">}</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text">    </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain">children</span><span class="token punctuation" style="color:#393A34">}</span><span class="token plain-text"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain-text">  </span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag" style="color:#00009f">span</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">)</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token maybe-class-name">This</span><span class="token plain"> is </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag class-name" style="color:#00009f">Highlight</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">color</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">&quot;</span><span class="token tag attr-value" style="color:#e3116c">#25c2a0</span><span class="token tag attr-value punctuation" style="color:#393A34">&quot;</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text">Docusaurus green</span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag class-name" style="color:#00009f">Highlight</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">!</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token maybe-class-name">This</span><span class="token plain"> is </span><span class="token tag punctuation" style="color:#393A34">&lt;</span><span class="token tag class-name" style="color:#00009f">Highlight</span><span class="token tag" style="color:#00009f"> </span><span class="token tag attr-name" style="color:#00a4db">color</span><span class="token tag attr-value punctuation attr-equals" style="color:#393A34">=</span><span class="token tag attr-value punctuation" style="color:#393A34">&quot;</span><span class="token tag attr-value" style="color:#e3116c">#1877F2</span><span class="token tag attr-value punctuation" style="color:#393A34">&quot;</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain-text">Facebook blue</span><span class="token tag punctuation" style="color:#393A34">&lt;/</span><span class="token tag class-name" style="color:#00009f">Highlight</span><span class="token tag punctuation" style="color:#393A34">&gt;</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">!</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>This is <span style="background-color:#25c2a0;border-radius:20px;color:#fff;padding:10px;cursor:pointer">Docusaurus green</span> !</p><p>This is <span style="background-color:#1877F2;border-radius:20px;color:#fff;padding:10px;cursor:pointer">Facebook blue</span> !</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/docs/tutorial-basics/create-a-blog-post"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Create a Blog Post</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/tutorial-basics/deploy-your-site"><div 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class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/cardano-updates/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/cardano-updates/docs/category/tutorial---extras"><span itemprop="name">Tutorial - Extras</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Manage Docs Versions</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Manage Docs Versions</h1><p>Docusaurus can manage multiple versions of your docs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="create-a-docs-version">Create a docs version<a class="hash-link" href="#create-a-docs-version" title="Direct link to heading">​</a></h2><p>Release a version 1.0 of your project:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> run docusaurus docs:version </span><span class="token number" style="color:#36acaa">1.0</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The <code>docs</code> folder is copied into <code>versioned_docs/version-1.0</code> and <code>versions.json</code> is created.</p><p>Your docs now have 2 versions:</p><ul><li><code>1.0</code> at <code>http://localhost:3000/docs/</code> for the version 1.0 docs</li><li><code>current</code> at <code>http://localhost:3000/docs/next/</code> for the <strong>upcoming, unreleased docs</strong></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="add-a-version-dropdown">Add a Version Dropdown<a class="hash-link" href="#add-a-version-dropdown" title="Direct link to heading">​</a></h2><p>To navigate seamlessly across versions, add a version dropdown.</p><p>Modify the <code>docusaurus.config.js</code> file:</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">docusaurus.config.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token literal-property property" style="color:#36acaa">themeConfig</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token literal-property property" style="color:#36acaa">navbar</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token literal-property property" style="color:#36acaa">items</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">        </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">          </span><span class="token literal-property property" style="color:#36acaa">type</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;docsVersionDropdown&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">        </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The docs version dropdown appears in your navbar:</p><p><img loading="lazy" alt="Docs Version Dropdown" src="/cardano-updates/assets/images/docsVersionDropdown-35e13cbe46c9923327f30a76a90bff3b.png" width="370" height="302" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="update-an-existing-version">Update an existing version<a class="hash-link" href="#update-an-existing-version" title="Direct link to heading">​</a></h2><p>It is possible to edit versioned docs in their respective folder:</p><ul><li><code>versioned_docs/version-1.0/hello.md</code> updates <code>http://localhost:3000/docs/hello</code></li><li><code>docs/hello.md</code> updates <code>http://localhost:3000/docs/next/hello</code></li></ul></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/docs/category/tutorial---extras"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Tutorial - Extras</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/docs/tutorial-extras/translate-your-site"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Translate your site</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#create-a-docs-version" class="table-of-contents__link toc-highlight">Create a docs version</a></li><li><a href="#add-a-version-dropdown" class="table-of-contents__link toc-highlight">Add a Version Dropdown</a></li><li><a href="#update-an-existing-version" class="table-of-contents__link toc-highlight">Update an existing version</a></li></ul></div></div></div></div></main></div></div><footer class="footer 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class="docPage__5DB"><aside class="theme-doc-sidebar-container docSidebarContainer_b6E3"><div class="sidebar_njMd"><nav class="menu thin-scrollbar menu_SIkG"><ul class="theme-doc-sidebar-menu menu__list"><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-1 menu__list-item"><a class="menu__link" href="/cardano-updates/docs/intro">Tutorial Intro</a></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item menu__list-item--collapsed"><div class="menu__list-item-collapsible"><a class="menu__link menu__link--sublist" aria-expanded="false" href="/cardano-updates/docs/category/tutorial---basics">Tutorial - Basics</a><button aria-label="Toggle the collapsible sidebar category &#x27;Tutorial - Basics&#x27;" type="button" class="clean-btn menu__caret"></button></div></li><li class="theme-doc-sidebar-item-category theme-doc-sidebar-item-category-level-1 menu__list-item"><div class="menu__list-item-collapsible"><a 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class="row"><div class="col docItemCol_VOVn"><div class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/cardano-updates/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_OVgt"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item"><a class="breadcrumbs__link" itemprop="item" href="/cardano-updates/docs/category/tutorial---extras"><span itemprop="name">Tutorial - Extras</span></a><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Translate your site</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Translate your site</h1><p>Let&#x27;s translate <code>docs/intro.md</code> to French.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="configure-i18n">Configure i18n<a class="hash-link" href="#configure-i18n" title="Direct link to heading">​</a></h2><p>Modify <code>docusaurus.config.js</code> to add support for the <code>fr</code> locale:</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">docusaurus.config.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token literal-property property" style="color:#36acaa">i18n</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token literal-property property" style="color:#36acaa">defaultLocale</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;en&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token literal-property property" style="color:#36acaa">locales</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token string" style="color:#e3116c">&#x27;en&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;fr&#x27;</span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="translate-a-doc">Translate a doc<a class="hash-link" href="#translate-a-doc" title="Direct link to heading">​</a></h2><p>Copy the <code>docs/intro.md</code> file to the <code>i18n/fr</code> folder:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">mkdir</span><span class="token plain"> -p i18n/fr/docusaurus-plugin-content-docs/current/</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token function" style="color:#d73a49">cp</span><span class="token plain"> docs/intro.md i18n/fr/docusaurus-plugin-content-docs/current/intro.md</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Translate <code>i18n/fr/docusaurus-plugin-content-docs/current/intro.md</code> in French.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="start-your-localized-site">Start your localized site<a class="hash-link" href="#start-your-localized-site" title="Direct link to heading">​</a></h2><p>Start your site on the French locale:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> run start -- --locale fr</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Your localized site is accessible at <a href="http://localhost:3000/fr/" target="_blank" rel="noopener noreferrer">http://localhost:3000/fr/</a> and the <code>Getting Started</code> page is translated.</p><div class="theme-admonition theme-admonition-caution alert alert--warning admonition_LlT9"><div class="admonitionHeading_tbUL"><span class="admonitionIcon_kALy"><svg viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8.893 1.5c-.183-.31-.52-.5-.887-.5s-.703.19-.886.5L.138 13.499a.98.98 0 0 0 0 1.001c.193.31.53.501.886.501h13.964c.367 0 .704-.19.877-.5a1.03 1.03 0 0 0 .01-1.002L8.893 1.5zm.133 11.497H6.987v-2.003h2.039v2.003zm0-3.004H6.987V5.987h2.039v4.006z"></path></svg></span>caution</div><div class="admonitionContent_S0QG"><p>In development, you can only use one locale at a same time.</p></div></div><h2 class="anchor anchorWithStickyNavbar_LWe7" id="add-a-locale-dropdown">Add a Locale Dropdown<a class="hash-link" href="#add-a-locale-dropdown" title="Direct link to heading">​</a></h2><p>To navigate seamlessly across languages, add a locale dropdown.</p><p>Modify the <code>docusaurus.config.js</code> file:</p><div class="language-js codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockTitle_Ktv7">docusaurus.config.js</div><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-js codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">module</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">exports</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token literal-property property" style="color:#36acaa">themeConfig</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token literal-property property" style="color:#36acaa">navbar</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token literal-property property" style="color:#36acaa">items</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token punctuation" style="color:#393A34">[</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">        </span><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">          </span><span class="token literal-property property" style="color:#36acaa">type</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&#x27;localeDropdown&#x27;</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line theme-code-block-highlighted-line" style="color:#393A34"><span class="token plain">        </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">      </span><span class="token punctuation" style="color:#393A34">]</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  </span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><span class="token punctuation" style="color:#393A34">;</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The locale dropdown now appears in your navbar:</p><p><img loading="lazy" alt="Locale Dropdown" src="/cardano-updates/assets/images/localeDropdown-f0d995e751e7656a1b0dbbc1134e49c2.png" width="370" height="302" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="build-your-localized-site">Build your localized site<a class="hash-link" href="#build-your-localized-site" title="Direct link to heading">​</a></h2><p>Build your site for a specific locale:</p><div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-bash codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token function" style="color:#d73a49">npm</span><span class="token plain"> run build -- --locale fr</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 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+{
+    "version": "https://jsonfeed.org/version/1",
+    "title": "Cardano Updates Feed",
+    "home_page_url": "https://input-output-hk.github.io/cardano-updates/",
+    "description": "Regular updates from Cardano Development Teams",
+    "items": [
+        {
+            "id": "2023-12-06-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway\nconformance testing working. We are now able to generate random valid data with the help\nof constraint based testing framework, apply that data to Conway Ledger rules and verify\nthat the output matches to the one produced by the executable version of the Formal Ledger\nSpecification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get\nConstitutional Committee query is complete and tested. Various improvements to the\ntesting tools. Addition of more test cases.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway\">Conway<a class=\"hash-link\" href=\"#conway\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3888\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3902\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3855\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3855</a> - Remove unreachable proposals</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3903\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3878\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3893\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3896\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3896</a> - Fix Brute force failure</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3904\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3907\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3883\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3909\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3908\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3912\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3912</a> - Removed call to tail, and the <!-- -->'<!-- -->watchPulser<!-- -->'<!-- --> test</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3852\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3891\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3891</a> - Bump plutus to 1.17</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-12-06-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-12-06T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-12-06-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator's performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1336\" target=\"_blank\" rel=\"noopener noreferrer\">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1350\" target=\"_blank\" rel=\"noopener noreferrer\">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1173\" target=\"_blank\" rel=\"noopener noreferrer\">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1357\" target=\"_blank\" rel=\"noopener noreferrer\">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1315\" target=\"_blank\" rel=\"noopener noreferrer\">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1327\" target=\"_blank\" rel=\"noopener noreferrer\">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1312\" target=\"_blank\" rel=\"noopener noreferrer\">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1385\" target=\"_blank\" rel=\"noopener noreferrer\">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1380\" target=\"_blank\" rel=\"noopener noreferrer\">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1390\" target=\"_blank\" rel=\"noopener noreferrer\">#1390</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-12-06-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-12-06T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-12-04-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We've measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we've run system integration level benchmarks in the Conway era for the first time, on the same node version.\nOnly Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"development\">Development<a class=\"hash-link\" href=\"#development\" title=\"Direct link to heading\">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.\nCurrently, we're looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we're interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we've\nimproved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The new tracing system is currently receiving usability improvements as we're reworking the output of several trace messages.\nAdditionally, we're setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>We've been working on adapting various benchmarking workloads, which are defined by our workbench's profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we're implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-12-04-performance-and-tracing",
+            "title": "Performance & Tracing Update",
+            "summary": "High level summary",
+            "date_modified": "2023-12-04T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-12-01-hydra",
+            "content_html": "<h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,\nfeaturing demonstrations and the preparation of the monthly report. They\naddressed flakiness in tests and enhanced the logs json schema,\nimproving overall test reliability. Additionally, the team successfully\nbuilt MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform\nsupport. They further improved the network configuration by detecting\nincompatible persisted states, contributing to overall system\nrobustness. Finally, the team released version 0.14.0, highlighting\ntheir commitment to delivering regular updates and improvements.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Monthly Review\n<a href=\"https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM\" target=\"_blank\" rel=\"noopener noreferrer\">meeting</a>\npacked with demonstrations and prepared monthly report\n<a href=\"https://github.com/input-output-hk/hydra/pull/1189\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema\n<a href=\"https://github.com/input-output-hk/hydra/pull/1188\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1188</a><a href=\"https://github.com/input-output-hk/hydra/issues/1190\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1190</a><a href=\"https://github.com/input-output-hk/hydra/pull/1192\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI\n<a href=\"https://github.com/input-output-hk/hydra/pull/1182\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted\nstates <a href=\"https://github.com/input-output-hk/hydra/issues/1174\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-12-01-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-12-01T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-11-29-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Consensus team implemented and tested a <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/525\" target=\"_blank\" rel=\"noopener noreferrer\">patch</a> that does not propagate future headers.\nIt is under review, and we expect it can be released in the next Cardano node version.\nOn the UTxO-HD front, we <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/510\" target=\"_blank\" rel=\"noopener noreferrer\">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.\nWith this prototype finished we can start integrating the rest of the code.\nWe <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/513\" target=\"_blank\" rel=\"noopener noreferrer\">investigated</a> the unexpected performance degradation observed when acquiring the block context.\nWe also <a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">released Cardano node 8.7.0</a> and <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3893\" target=\"_blank\" rel=\"noopener noreferrer\">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-29-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-29T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-11-29-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team released the initial version of the <a href=\"https://crates.io/crates/mithril-client\" target=\"_blank\" rel=\"noopener noreferrer\">Mithril client library</a>, enabling developers to integrate core Mithril features into their applications. They also released a new distribution, <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2347.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Release of the <a href=\"https://crates.io/crates/mithril-client\" target=\"_blank\" rel=\"noopener noreferrer\"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href=\"https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released\" target=\"_blank\" rel=\"noopener noreferrer\">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2347.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1336\" target=\"_blank\" rel=\"noopener noreferrer\">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1315\" target=\"_blank\" rel=\"noopener noreferrer\">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1350\" target=\"_blank\" rel=\"noopener noreferrer\">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1327\" target=\"_blank\" rel=\"noopener noreferrer\">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1312\" target=\"_blank\" rel=\"noopener noreferrer\">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1361\" target=\"_blank\" rel=\"noopener noreferrer\">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1355\" target=\"_blank\" rel=\"noopener noreferrer\">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1356\" target=\"_blank\" rel=\"noopener noreferrer\">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1325\" target=\"_blank\" rel=\"noopener noreferrer\">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1375\" target=\"_blank\" rel=\"noopener noreferrer\">#1375</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-29-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-11-29T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-11-24-hydra",
+            "content_html": "<h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h3><p>This week, the Hydra team spent significant time opening a head among\nthemselves on <code>mainnet</code> using the release candidate, revealing and\naddressing lurking bugs such as\n<a href=\"https://github.com/input-output-hk/hydra/issues/1174\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1174</a>. Also\nrequired was this change to dynamically calculate the min utxo value\n<a href=\"https://github.com/input-output-hk/hydra/pull/1176\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1176</a>, a\nnecessary adjustment following the switch to inline datums. The team\nengaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent\nchanges and collaborated on drafting feature ideas, including providing\n<a href=\"https://github.com/input-output-hk/hydra/issues/1177\" target=\"_blank\" rel=\"noopener noreferrer\">Conway support</a>\nfor the Hydra roadmap. As part of ongoing improvements, they\nexperimented with writing the specification in markdown instead of\nLaTex.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like\n<a href=\"https://github.com/input-output-hk/hydra/issues/1174\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1174</a> in the\nrelease candidate</li><li>Calculate the min utxo value instead of hard-coding it\n<a href=\"https://github.com/input-output-hk/hydra/pull/1176\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1176</a>, which is\nneeded since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss\nrecent changes and way forward</li><li>Drafted features ideas to provide <a href=\"https://github.com/input-output-hk/hydra/issues/1177\" target=\"_blank\" rel=\"noopener noreferrer\">Conway\nsupport</a> on the\nHydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href=\"https://github.com/input-output-hk/hydra/milestone/14?closed=1\" target=\"_blank\" rel=\"noopener noreferrer\">this\nscope</a></li><li>Complete tidying up chain layer via stateless observation changes in\nhydra-node\n<a href=\"https://github.com/input-output-hk/hydra/issues/1096\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway\n<a href=\"https://github.com/input-output-hk/hydra/issues/1114\" target=\"_blank\" rel=\"noopener noreferrer\">#<!-- -->1114</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-24-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-11-24T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-11-24-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href=\"https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5537\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn't desired</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/20\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster's static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/6\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster's static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"offchain-metadata-tools\">Offchain-metadata-tools<a class=\"hash-link\" href=\"#offchain-metadata-tools\" title=\"Direct link to heading\">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href=\"https://github.com/input-output-hk/offchain-metadata-tools/pull/61\" target=\"_blank\" rel=\"noopener noreferrer\">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-24-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-24T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-11-22-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of\nCDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not\npreviously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no\nlonger allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting\nwith Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway\">Conway<a class=\"hash-link\" href=\"#conway\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3858\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3860\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3864\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3859\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3867\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3869\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3863\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3861\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3875\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3876\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3884\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3868\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3792\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3885\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3886\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3854\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3854</a> - Integration work for node 8.7.0</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3872\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3871\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3874\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3874</a> - Post release changes</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3880\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3880</a> - Remove generic-monoid dependency</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3887\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-22-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-22T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-11-22-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1326\" target=\"_blank\" rel=\"noopener noreferrer\">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1327\" target=\"_blank\" rel=\"noopener noreferrer\">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1312\" target=\"_blank\" rel=\"noopener noreferrer\">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1356\" target=\"_blank\" rel=\"noopener noreferrer\">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1355\" target=\"_blank\" rel=\"noopener noreferrer\">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1361\" target=\"_blank\" rel=\"noopener noreferrer\">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1352\" target=\"_blank\" rel=\"noopener noreferrer\">#1352</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-22-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-11-22T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-11-20-cip1694",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"initial-cip-1694-security-analysis-and-responses\">Initial CIP-1694 Security Analysis and Responses<a class=\"hash-link\" href=\"#initial-cip-1694-security-analysis-and-responses\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-the-constitutional-committee\">Section: The constitutional committee<a class=\"hash-link\" href=\"#section-the-constitutional-committee\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule \"The Cardano network must always be able to produce new blocks\" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a 'guardrails document' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-size-of-the-constitutional-committee\">Section: Size of the constitutional committee<a class=\"hash-link\" href=\"#section-size-of-the-constitutional-committee\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-terms\">Section: Terms<a class=\"hash-link\" href=\"#section-terms\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-registered-dreps\">Section: Registered DReps<a class=\"hash-link\" href=\"#section-registered-dreps\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-ratification\">Section: Ratification<a class=\"hash-link\" href=\"#section-ratification\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>\nactions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-content\">Section: Content<a class=\"hash-link\" href=\"#section-content\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-protocol-parameter-groups\">Section: Protocol Parameter groups<a class=\"hash-link\" href=\"#section-protocol-parameter-groups\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href=\"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time.\" target=\"_blank\" rel=\"noopener noreferrer\">https://cips.cardano.org/cips/cip9/</a>9 or <a href=\"https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time.\" target=\"_blank\" rel=\"noopener noreferrer\">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-votes\">Section: Votes<a class=\"hash-link\" href=\"#section-votes\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes\">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class=\"hash-link\" href=\"#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-changes-post-edinburgh-workshop-july-2023\">Section: Changes post Edinburgh workshop (July 2023)<a class=\"hash-link\" href=\"#section-changes-post-edinburgh-workshop-july-2023\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"section-reduced-deposits-for-some-government-actions\">Section: Reduced deposits for some government actions<a class=\"hash-link\" href=\"#section-reduced-deposits-for-some-government-actions\" title=\"Direct link to heading\">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694",
+            "title": "Initial CIP 1694 Security Analysis and Responses",
+            "summary": "High level summary",
+            "date_modified": "2023-11-20T00:00:00.000Z",
+            "author": {
+                "name": "Kevin Hammond",
+                "url": "https://github.com/kevinhammond"
+            },
+            "tags": [
+                "ledger",
+                "cip1694",
+                "security"
+            ]
+        },
+        {
+            "id": "2023-11-17-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed\nmisleading errors regarding collect com transactions, resolved a security\nadvisory (CVE-2023-42806), and simplified the Hydra Head protocol by using\ninline datums. The team also tackled minor inconsistencies in specifications and\nimplementation, documented reasons for potentially dropped close transactions by\nthe cardano-node, and collaborated with SundaeLabs on an offline mode for\n<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about\nincremental de-/commits.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href=\"https://github.com/input-output-hk/hydra/issues/839\" target=\"_blank\" rel=\"noopener noreferrer\">#839</a></li><li>Addressed security advisory <a href=\"https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq\" target=\"_blank\" rel=\"noopener noreferrer\">CVE-2023-42806</a> in PR <a href=\"https://github.com/input-output-hk/hydra/pull/1161\" target=\"_blank\" rel=\"noopener noreferrer\">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href=\"https://github.com/input-output-hk/hydra/pull/1162\" target=\"_blank\" rel=\"noopener noreferrer\">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href=\"https://github.com/input-output-hk/hydra/issues/1104\" target=\"_blank\" rel=\"noopener noreferrer\">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href=\"https://github.com/input-output-hk/hydra/issues/1039\" target=\"_blank\" rel=\"noopener noreferrer\">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href=\"https://github.com/input-output-hk/hydra/issues/1057\" target=\"_blank\" rel=\"noopener noreferrer\">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href=\"https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A\" target=\"_blank\" rel=\"noopener noreferrer\">open bugs</a></li><li>Release version 0.14.0 with <a href=\"https://github.com/input-output-hk/hydra/milestone/14?closed=1\" target=\"_blank\" rel=\"noopener noreferrer\">this scope</a></li><li>Update dependencies to prepare for Conway <a href=\"https://github.com/input-output-hk/hydra/issues/1114\" target=\"_blank\" rel=\"noopener noreferrer\">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href=\"https://github.com/input-output-hk/hydra/issues/1096\" target=\"_blank\" rel=\"noopener noreferrer\">#1096</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-17-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-11-17T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-11-17-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>We've performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags\nand mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial\nwe can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we've been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we've observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we've seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that\nthere is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>\nservice on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"development\">Development<a class=\"hash-link\" href=\"#development\" title=\"Direct link to heading\">​</a></h3><p>For future benchmarks to be built around PlutusV3, we've equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes\nto the execution budgets by developing specialized workloads.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure\nperformance for a long service run time, we're currently equipping the service binary with the same capability to\nemit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,\nmore detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables\nour team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workbench\">Workbench<a class=\"hash-link\" href=\"#workbench\" title=\"Direct link to heading\">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.\nWhen alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-17-performance-and-tracing",
+            "title": "Performance & Tracing Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-17T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-11-16-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-48\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 48</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-48\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>We continued reviewing bootstrap peers, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4555\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4555</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ioclasses--iosim\">IOClasses / IOSim<a class=\"hash-link\" href=\"#ioclasses--iosim\" title=\"Direct link to heading\">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.\nThe recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href=\"https://github.com/input-output-hk/io-sim/pull/117\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#117</a>.\nWe released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href=\"https://github.com/input-output-hk/io-sim/pull/119\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href=\"https://github.com/input-output-hk/io-sim/pull/123\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#123</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4707\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4707</a>.\nWe continued reviewing the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4625</a> PR, which refactors\n<code>RootPeersDNS</code> module.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-16-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 48",
+            "date_modified": "2023-11-16T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-11-15-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).\nThis <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.\nHowever, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.\nOn the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.\nTherefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/434\" target=\"_blank\" rel=\"noopener noreferrer\">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href=\"https://github.com/jasagredo\" target=\"_blank\" rel=\"noopener noreferrer\">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-15-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-15T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-11-15-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the 'release-mainnet' aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1300\" target=\"_blank\" rel=\"noopener noreferrer\">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1311\" target=\"_blank\" rel=\"noopener noreferrer\">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1310\" target=\"_blank\" rel=\"noopener noreferrer\">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1343\" target=\"_blank\" rel=\"noopener noreferrer\">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1235\" target=\"_blank\" rel=\"noopener noreferrer\">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1327\" target=\"_blank\" rel=\"noopener noreferrer\">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1312\" target=\"_blank\" rel=\"noopener noreferrer\">#1312</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-15-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-11-15T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-11-14-node-cli-api",
+            "content_html": "<h1>2023-11-01 - 2023-11-14</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>CARDANO-NODE</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/451\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences (6/6)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/448\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences (5/6)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/444\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/443\" target=\"_blank\" rel=\"noopener noreferrer\">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/441\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/436\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/435\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-8.31.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/434\" target=\"_blank\" rel=\"noopener noreferrer\">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/432\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.14.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/430\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade cardano-api to 8.30</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/428\" target=\"_blank\" rel=\"noopener noreferrer\">Command types for <code>node</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/427\" target=\"_blank\" rel=\"noopener noreferrer\">Split governance <code>MIRTransferConstructor</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/426\" target=\"_blank\" rel=\"noopener noreferrer\">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/425\" target=\"_blank\" rel=\"noopener noreferrer\">Command argument types for <code>drep</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/421\" target=\"_blank\" rel=\"noopener noreferrer\">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/419\" target=\"_blank\" rel=\"noopener noreferrer\">Command arguments types for stake-pool commands</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/364\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/360\" target=\"_blank\" rel=\"noopener noreferrer\">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/358\" target=\"_blank\" rel=\"noopener noreferrer\">Protocol version change is not common to all versions anymore</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/355\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/354\" target=\"_blank\" rel=\"noopener noreferrer\">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/353\" target=\"_blank\" rel=\"noopener noreferrer\">Modify foldBlocks to recurse on ledger events </a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/352\" target=\"_blank\" rel=\"noopener noreferrer\">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/351\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5525\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-14-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-14T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-11-10-hydra",
+            "content_html": "<h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published\nthe monthly report for October, providing updates on project developments. The\nteam delivered a presentation and workshop at the Cardano Summit, contributing\nto community engagement. They implemented a \\\"dirt road\\\" solution for the\n\\\"Ignored init tx\\\" notification and moved the <code>hydra-poll</code> example project to a\ndedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool\nfor Hydra Heads, updated the toolchain to GHC 9.6.3, and made various\nimprovements to tooling and code formatting. They addressed specific issues,\nsuch as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the\nrewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test\nsuite by fetching network configurations dynamically. Lastly, they actively\nreviewed pull requests and architectural decision records from the community,\nincluding contributions from SundaeSwap. An experiment, the Hydra tally, was\ncompleted and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Published the monthly <a href=\"https://hydra.family/head-protocol/monthly/2023-10\" target=\"_blank\" rel=\"noopener noreferrer\">report for\noctober</a></li><li>Given a presentation / workshop at the Cardano summit\n<a href=\"https://github.com/input-output-hk/hydra/issues/1109\" target=\"_blank\" rel=\"noopener noreferrer\">#1109</a></li><li>Dirt road implementation for \\\"Ignored init tx\\\" notification\n<a href=\"https://github.com/input-output-hk/hydra/issues/529\" target=\"_blank\" rel=\"noopener noreferrer\">#529</a> (without\nstateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a\ndedicated\n<a href=\"https://github.com/cardano-scaling/hydra-poll\" target=\"_blank\" rel=\"noopener noreferrer\">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads\n<a href=\"https://github.com/input-output-hk/hydra/issues/1096\" target=\"_blank\" rel=\"noopener noreferrer\">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling\nand code formatting\n<a href=\"https://github.com/input-output-hk/hydra/pull/1135\" target=\"_blank\" rel=\"noopener noreferrer\">#1135</a><a href=\"https://github.com/input-output-hk/hydra/pull/1152\" target=\"_blank\" rel=\"noopener noreferrer\">#1152</a><a href=\"https://github.com/input-output-hk/hydra/pull/1151\" target=\"_blank\" rel=\"noopener noreferrer\">#1151</a><a href=\"https://github.com/input-output-hk/hydra/pull/1154\" target=\"_blank\" rel=\"noopener noreferrer\">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing\nkeys <a href=\"https://github.com/input-output-hk/hydra/issues/1136\" target=\"_blank\" rel=\"noopener noreferrer\">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href=\"https://github.com/input-output-hk/hydra/issues/1113\" target=\"_blank\" rel=\"noopener noreferrer\">#1113</a><a href=\"https://github.com/input-output-hk/hydra/issues/1137\" target=\"_blank\" rel=\"noopener noreferrer\">#1137</a></li><li>Fetch network configurations instead of packaging them into\nhydra-cluster (smoke) test suite\n<a href=\"https://github.com/input-output-hk/hydra/pull/1156\" target=\"_blank\" rel=\"noopener noreferrer\">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)\n<a href=\"https://github.com/input-output-hk/hydra/pull/1118\" target=\"_blank\" rel=\"noopener noreferrer\">#1118</a><a href=\"https://github.com/input-output-hk/hydra/pull/1157\" target=\"_blank\" rel=\"noopener noreferrer\">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor\nexisting code towards more stateless observation</li><li>Start work on incremental decommits</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-10-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-11-10T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-11-10-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href=\"https://github.com/input-output-hk/cardano-playground\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a> stack</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href=\"https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href=\"https://github.com/input-output-hk/cardano-parts/pull/18\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href=\"https://github.com/input-output-hk/cardano-parts/pull/19\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href=\"https://github.com/input-output-hk/cardano-parts/pull/21\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/5\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iohk-nix\">Iohk-nix<a class=\"hash-link\" href=\"#iohk-nix\" title=\"Direct link to heading\">​</a></h3><ul><li>Migration to play: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/561\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sanchonet-demo\">Sanchonet-demo<a class=\"hash-link\" href=\"#sanchonet-demo\" title=\"Direct link to heading\">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href=\"https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d\" target=\"_blank\" rel=\"noopener noreferrer\">sanchonet-demo-commit</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-10-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-10T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-11-09-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix\ntags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.\nWe have completed the initial implementation for the bootstrap instance objective.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1558\" target=\"_blank\" rel=\"noopener noreferrer\">#1558</a></li><li>Fix of the committee key size\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1544\" target=\"_blank\" rel=\"noopener noreferrer\">#1544</a></li><li>Workaround a ledger issue with unregistered pools\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1542\" target=\"_blank\" rel=\"noopener noreferrer\">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1539\" target=\"_blank\" rel=\"noopener noreferrer\">#1539</a></li><li>Rename offline to offchain\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1533\" target=\"_blank\" rel=\"noopener noreferrer\">#1533</a></li><li>Transfer existing tests to Conway era\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1529\" target=\"_blank\" rel=\"noopener noreferrer\">#1529</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1547\" target=\"_blank\" rel=\"noopener noreferrer\">#1547</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-09-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-09T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-11-08-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and\ntooling that we use for testing Ledger. Major Conway bugs that were discovered and\nsquashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an\nordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate\ncertificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a\nserious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on\nexpired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized \"Imp\" test library that allows us\nwriting concise stateful unit tests for verifying the Ledger logic. Serious progress has\nbeen made on the conformance testing, where we can now interface with Haskell generated\ncode from the Agda specification. Serialization testing has been extended to increase\nbinary conformance coverage.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway\">Conway<a class=\"hash-link\" href=\"#conway\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3808\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3801\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3801</a> - Fix epoch rule and tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3803\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3803</a> - Fix delegation validation</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3759\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3779\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3794\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3794</a> - Added anchor to resign certs</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3797\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3848\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3848</a> - Plutus modules restructure</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3840\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3856\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3856</a> - Add governance related ledger events</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3825\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3831\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3831</a> - Treasury withdrawal fix</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3791\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3836\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3846\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3846</a> - Revert argument order swap.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3782\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3842\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3842</a> - Imp improvements</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3844\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3844</a> - Add mappings to Agda types</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3853\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3809\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3809</a> - CDDL roundtrip testing</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3832\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3832</a> - Treasury withdrawals tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3839\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3841\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3843\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3795\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3795</a> - Bump plutus to 1.15</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3798\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3799\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3799</a> - Changes needed for 8.6 release</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3807\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3819</a> - Fixups needed for a release</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3829\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3830\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3830</a> - Bump aeson to 2.2</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3833\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3828\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3828</a> - Add changelog for node release 8.6</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-08-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-08T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-11-08-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the 'release-mainnet' aggregator.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1300\" target=\"_blank\" rel=\"noopener noreferrer\">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1311\" target=\"_blank\" rel=\"noopener noreferrer\">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1310\" target=\"_blank\" rel=\"noopener noreferrer\">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1322\" target=\"_blank\" rel=\"noopener noreferrer\">#1322</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-08-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-11-08T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-11-01-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/422\" target=\"_blank\" rel=\"noopener noreferrer\">survivable eclipse duration</a>, which is part of our work <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/427\" target=\"_blank\" rel=\"noopener noreferrer\">supporting Genesis delivery</a>, and how to <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4251\" target=\"_blank\" rel=\"noopener noreferrer\">improve the handling of blocks from the future</a>.\nRegarding the UTxO-HD branch, we managed to run a node with <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/344\" target=\"_blank\" rel=\"noopener noreferrer\">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.\nWe also <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122\" target=\"_blank\" rel=\"noopener noreferrer\">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-01-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-11-01T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-11-01-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the 'devnet' faster and fixed some regressions in the Mithril client CLI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1300\" target=\"_blank\" rel=\"noopener noreferrer\">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1284\" target=\"_blank\" rel=\"noopener noreferrer\">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href=\"https://github.com/input-output-hk/mithril/issues/1272\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1311\" target=\"_blank\" rel=\"noopener noreferrer\">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1310\" target=\"_blank\" rel=\"noopener noreferrer\">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1321\" target=\"_blank\" rel=\"noopener noreferrer\">#1321</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-11-01-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-11-01T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-10-27-hydra",
+            "content_html": "<h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid\noverwriting existing keys, and resolved issues related to the rewritten\n<code>hydra-tui</code>. They also worked on a \\\"dirt road\\\" implementation for the\n\\\"Ignored init tx\\\" notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including\nimplementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check\nout our Masterclass about \\\"Developing Hydra + Mithril for Scaling Cardano\\\" on\nFriday, November 3 at 14:00-15:30 local time in the \\\"Al Dar\\\" room!</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys\n<a href=\"https://github.com/input-output-hk/hydra/issues/1136\" target=\"_blank\" rel=\"noopener noreferrer\">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href=\"https://github.com/input-output-hk/hydra/issues/1113\" target=\"_blank\" rel=\"noopener noreferrer\">#1113</a><a href=\"https://github.com/input-output-hk/hydra/issues/1137\" target=\"_blank\" rel=\"noopener noreferrer\">#1137</a></li><li>Finalized cardano summit preparation\n<a href=\"https://github.com/input-output-hk/hydra/issues/1109\" target=\"_blank\" rel=\"noopener noreferrer\">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href=\"https://github.com/cardano-scaling/hydra-poll\" target=\"_blank\" rel=\"noopener noreferrer\">link to\nrepository</a></li><li>Dirt road implementation for \\\"Ignored init tx\\\" notification\n<a href=\"https://github.com/input-output-hk/hydra/issues/529\" target=\"_blank\" rel=\"noopener noreferrer\">#529</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-27-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-10-27T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-10-27-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-47\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 47</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-47\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4555\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4555</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--tests\">CI / Tests<a class=\"hash-link\" href=\"#ci--tests\" title=\"Direct link to heading\">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>\nfunction used for testing codecs which triggered out of memory manager (OOM) on\nsome platforms (<a href=\"https://github.com/input-output-hk/typed-protocols/pull/43\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI\n<code>timeouts</code> (see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680\" target=\"_blank\" rel=\"noopener noreferrer\">connection-manager-fix</a>).  </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"keepalive-client\">KeepAlive client<a class=\"hash-link\" href=\"#keepalive-client\" title=\"Direct link to heading\">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed\nby Karl Knutsson (<a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano Foundation</a>), <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4689\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4689</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"galois\">Galois<a class=\"hash-link\" href=\"#galois\" title=\"Direct link to heading\">​</a></h3><p>We merged two large PRs prepared by <a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a>:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4660\" target=\"_blank\" rel=\"noopener noreferrer\">inspect <code>error</code> call sites</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4663\" target=\"_blank\" rel=\"noopener noreferrer\">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-network-service-assurance-cnsa\">Cardano Network Service Assurance (CNSA)<a class=\"hash-link\" href=\"#cardano-network-service-assurance-cnsa\" title=\"Direct link to heading\">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new \"CSNA analysis\" that provides, for each sampler node, the\nblock download throughput in bytes over time.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-chap-release\">New CHaP Release<a class=\"hash-link\" href=\"#new-chap-release\" title=\"Direct link to heading\">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/547\" target=\"_blank\" rel=\"noopener noreferrer\">chap#547</a></p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"more-details\">More details<a class=\"hash-link\" href=\"#more-details\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--tests-1\">CI / Tests<a class=\"hash-link\" href=\"#ci--tests-1\" title=\"Direct link to heading\">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of\n<code>IOSim</code> traces without retaining them, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4696\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test\nartefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for\n<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4702\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to\nrun concurrently, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4702\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4702</a>.</p><p>We merged <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4623\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4694\" target=\"_blank\" rel=\"noopener noreferrer\">inbound-governor: connection leak</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4607\" target=\"_blank\" rel=\"noopener noreferrer\">connection-manager: assertion failure</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4605\" target=\"_blank\" rel=\"noopener noreferrer\">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production\ncode.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"release-process\">Release Process<a class=\"hash-link\" href=\"#release-process\" title=\"Direct link to heading\">​</a></h3><p>We updated our release process &amp; associated scripts, see\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4705\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4705</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-27-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 47",
+            "date_modified": "2023-10-27T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-10-27-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href=\"https://github.com/input-output-hk/cardano-playground\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a> stack</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href=\"https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href=\"https://github.com/input-output-hk/cardano-parts/pull/17\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/4\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground-pull-4</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-27-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-27T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-10-25-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team released a new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2342.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2342.0</code></a>. This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1300\" target=\"_blank\" rel=\"noopener noreferrer\">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1141\" target=\"_blank\" rel=\"noopener noreferrer\">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1187\" target=\"_blank\" rel=\"noopener noreferrer\">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1272\" target=\"_blank\" rel=\"noopener noreferrer\">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1310\" target=\"_blank\" rel=\"noopener noreferrer\">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1284\" target=\"_blank\" rel=\"noopener noreferrer\">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1133\" target=\"_blank\" rel=\"noopener noreferrer\">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1184\" target=\"_blank\" rel=\"noopener noreferrer\">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1306\" target=\"_blank\" rel=\"noopener noreferrer\">#1306</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-25-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-10-25T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-10-24-node-cli-api",
+            "content_html": "<h1>2023-10-11 - 2023-10-24</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/394\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/393\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/390\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/389\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/380\" target=\"_blank\" rel=\"noopener noreferrer\">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/379\" target=\"_blank\" rel=\"noopener noreferrer\">drep registration-certificate: add a golden test</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/378\" target=\"_blank\" rel=\"noopener noreferrer\">Disambiguate treasury withdrawal flags</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/375\" target=\"_blank\" rel=\"noopener noreferrer\">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/374\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>conway governance action view</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/372\" target=\"_blank\" rel=\"noopener noreferrer\">Ch/clearer anchor flags</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/371\" target=\"_blank\" rel=\"noopener noreferrer\">Command argument types for <code>transaction</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/370\" target=\"_blank\" rel=\"noopener noreferrer\">Remove eras' constitution-hash</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/368\" target=\"_blank\" rel=\"noopener noreferrer\">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/367\" target=\"_blank\" rel=\"noopener noreferrer\">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/366\" target=\"_blank\" rel=\"noopener noreferrer\">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/365\" target=\"_blank\" rel=\"noopener noreferrer\"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/364\" target=\"_blank\" rel=\"noopener noreferrer\">Command argument types for governance key commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/363\" target=\"_blank\" rel=\"noopener noreferrer\">Add test of voting using a cc hot key</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/338\" target=\"_blank\" rel=\"noopener noreferrer\">Add Show instance for FoldBlocksError</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/336\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade typed-protocols to 1.1.1</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/332\" target=\"_blank\" rel=\"noopener noreferrer\">Improved validity range handling</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/331\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/330\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>AlonzoEraOnly</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/329\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/327\" target=\"_blank\" rel=\"noopener noreferrer\">DRep extended key: add CastVerificationKeyRole</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/326\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/325\" target=\"_blank\" rel=\"noopener noreferrer\">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/324\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/323\" target=\"_blank\" rel=\"noopener noreferrer\">Support Plutus V1 in Conway</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/322\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterize GovernanceAction on era </a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/320\" target=\"_blank\" rel=\"noopener noreferrer\">Support DRep extended keys</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/314\" target=\"_blank\" rel=\"noopener noreferrer\">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/313\" target=\"_blank\" rel=\"noopener noreferrer\">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/312\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5515\" target=\"_blank\" rel=\"noopener noreferrer\">Factor out file creation for SPO</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5504\" target=\"_blank\" rel=\"noopener noreferrer\">Tracer documentation generation enhacements </a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-24-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-24T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-10-20-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API's submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.\nThis improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.\nThis effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href=\"https://github.com/input-output-hk/hydra/pull/1127\" target=\"_blank\" rel=\"noopener noreferrer\">#1127</a></li><li><a href=\"https://github.com/input-output-hk/hydra/issues/1120\" target=\"_blank\" rel=\"noopener noreferrer\">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href=\"https://github.com/input-output-hk/hydra/pull/1105\" target=\"_blank\" rel=\"noopener noreferrer\">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href=\"https://github.com/input-output-hk/hydra/issues/1111\" target=\"_blank\" rel=\"noopener noreferrer\">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href=\"https://github.com/input-output-hk/hydra/pull/1121\" target=\"_blank\" rel=\"noopener noreferrer\">#1121</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-20-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-10-20T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-10-18-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330\" target=\"_blank\" rel=\"noopener noreferrer\">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href=\"https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069\" target=\"_blank\" rel=\"noopener noreferrer\">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/422\" target=\"_blank\" rel=\"noopener noreferrer\">422</a>).</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/amesgen\" target=\"_blank\" rel=\"noopener noreferrer\">Esgen</a> finished his cycle as release engineer. Node <a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4251\" target=\"_blank\" rel=\"noopener noreferrer\">4251</a>).</li><li>We prepared the integration of <a href=\"https://github.com/input-output-hk/cardano-node/pull/5502\" target=\"_blank\" rel=\"noopener noreferrer\">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4251\" target=\"_blank\" rel=\"noopener noreferrer\">issue</a>).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-18-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-18T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-10-18-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href=\"https://crates.io/\" target=\"_blank\" rel=\"noopener noreferrer\">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href=\"https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq\" target=\"_blank\" rel=\"noopener noreferrer\">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1300\" target=\"_blank\" rel=\"noopener noreferrer\">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1141\" target=\"_blank\" rel=\"noopener noreferrer\">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1187\" target=\"_blank\" rel=\"noopener noreferrer\">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1298\" target=\"_blank\" rel=\"noopener noreferrer\">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1292\" target=\"_blank\" rel=\"noopener noreferrer\">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1218\" target=\"_blank\" rel=\"noopener noreferrer\">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1272\" target=\"_blank\" rel=\"noopener noreferrer\">#1272</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-18-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-10-18T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-10-15-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-46\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 46</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-46\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4555\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4555</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"towards-typed-protocols-0200\">Towards Typed Protocols 0.2.0.0<a class=\"hash-link\" href=\"#towards-typed-protocols-0200\" title=\"Direct link to heading\">​</a></h3><p>We diagnosed the performance regression of the new design. The work on\n<code>typed-protocols</code> will be postponed.  For more details see the\n<a href=\"https://github.com/input-output-hk/typed-protocols/pull/3\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4691\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> which updates the <code>demo-ping-pong</code> and\n<code>demo-chain-sync</code> applications.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"peer-sharing\">Peer Sharing<a class=\"hash-link\" href=\"#peer-sharing\" title=\"Direct link to heading\">​</a></h3><p>We made progress in review of <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4644\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4644</a>, which simplifies the\npeer sharing and fixes the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4642\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4642</a> issue.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech Debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h3><p>We reviewed the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3836\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3836</a> PR which inspects all the uses of\n<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-15-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 46",
+            "date_modified": "2023-10-15T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-10-13-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team's primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project's structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-13-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-10-13T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-10-13-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to\ntesting. For this reason there is a very little amount features that are reported this\ntime aorund. Notable Conway related changes are a specialized ledger query for getting\nConstitutional Committee state and prevention of submitting proposal procedures that have\nno valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip\nserialization. As a result of this extra testing a bug in Conway Genesis serialization\nwas eliminated.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-era\">Conway era<a class=\"hash-link\" href=\"#conway-era\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3768\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3781\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3781</a> - CommitteeState query</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"integration-and-releasing\">Integration and releasing<a class=\"hash-link\" href=\"#integration-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3774\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3770\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3770</a> - cabal.project: Bump index states</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3778\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3769\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3783\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3783</a> - Update TranslationInstance.hs</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3775\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3793\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3793</a> - Fix sums with negative RHS.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-13-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-13T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-10-13-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href=\"https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/16\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/15\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/3\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href=\"https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sanchonet-demo\">Sanchonet-demo<a class=\"hash-link\" href=\"#sanchonet-demo\" title=\"Direct link to heading\">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href=\"https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31\" target=\"_blank\" rel=\"noopener noreferrer\">sanchonet-demo-commit</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-13-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-13T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-10-11-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on <a href=\"https://crates.io/\" target=\"_blank\" rel=\"noopener noreferrer\">crates.io</a>, the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1141\" target=\"_blank\" rel=\"noopener noreferrer\">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1283\" target=\"_blank\" rel=\"noopener noreferrer\">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1187\" target=\"_blank\" rel=\"noopener noreferrer\">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1282\" target=\"_blank\" rel=\"noopener noreferrer\">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1218\" target=\"_blank\" rel=\"noopener noreferrer\">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1230\" target=\"_blank\" rel=\"noopener noreferrer\">#1230</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-11-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-10-11T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-10-10-node-cli-api",
+            "content_html": "<h1>2023-09-27 - 2023-10-10</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>CARDANO-NODE</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/347\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/344\" target=\"_blank\" rel=\"noopener noreferrer\">Rename create-new-committee into update-committee</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/341\" target=\"_blank\" rel=\"noopener noreferrer\">New version cardano-cli-8.12.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/338\" target=\"_blank\" rel=\"noopener noreferrer\">Add support for committee hot key witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/337\" target=\"_blank\" rel=\"noopener noreferrer\">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/331\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/330\" target=\"_blank\" rel=\"noopener noreferrer\">Drep certification registration: add parameters for anchor</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/329\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/327\" target=\"_blank\" rel=\"noopener noreferrer\">Move files that are not golden files into <code>input</code> directory</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/324\" target=\"_blank\" rel=\"noopener noreferrer\">Update to cardano-api-8.24</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/323\" target=\"_blank\" rel=\"noopener noreferrer\">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/322\" target=\"_blank\" rel=\"noopener noreferrer\">create-poll, answer-poll, verify-poll: move to 'babbage governance' block</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/320\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/319\" target=\"_blank\" rel=\"noopener noreferrer\">Make <code>transaction view</code> emit JSON</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/318\" target=\"_blank\" rel=\"noopener noreferrer\">Tidy up query command structure</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/316\" target=\"_blank\" rel=\"noopener noreferrer\">Add DRep Retirement Certificate command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/310\" target=\"_blank\" rel=\"noopener noreferrer\">Update to cardano api 8.22.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/309\" target=\"_blank\" rel=\"noopener noreferrer\">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/307\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/306\" target=\"_blank\" rel=\"noopener noreferrer\">Add certs to txbody of Conway transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/305\" target=\"_blank\" rel=\"noopener noreferrer\">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/304\" target=\"_blank\" rel=\"noopener noreferrer\">Add BabbageEraOnly</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/303\" target=\"_blank\" rel=\"noopener noreferrer\">New version cardano-api-8.25.2.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/300\" target=\"_blank\" rel=\"noopener noreferrer\">Add support for committee hot key witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/299\" target=\"_blank\" rel=\"noopener noreferrer\">Reduce constraint usage with eons</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/297\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/296\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/294\" target=\"_blank\" rel=\"noopener noreferrer\">New version cardano-api-8.25.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/293\" target=\"_blank\" rel=\"noopener noreferrer\">Require conway onwards for voting</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/292\" target=\"_blank\" rel=\"noopener noreferrer\">Add witness committee cold key</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/291\" target=\"_blank\" rel=\"noopener noreferrer\">Fix CHaP failure due to haddock issue</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/290\" target=\"_blank\" rel=\"noopener noreferrer\">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/289\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/288\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.24.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/287\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/286\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/284\" target=\"_blank\" rel=\"noopener noreferrer\">conway drep registration: expose ledger anchor parameter</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/282\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/281\" target=\"_blank\" rel=\"noopener noreferrer\">Rename eon functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/280\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>AnyEraInEon</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/279\" target=\"_blank\" rel=\"noopener noreferrer\">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/278\" target=\"_blank\" rel=\"noopener noreferrer\">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/277\" target=\"_blank\" rel=\"noopener noreferrer\">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/276\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.22.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/275\" target=\"_blank\" rel=\"noopener noreferrer\">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5490\" target=\"_blank\" rel=\"noopener noreferrer\">Integrate upstream libraries for 8.5</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5497\" target=\"_blank\" rel=\"noopener noreferrer\">bump cardano-api to 8.25.2</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5491\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unused code in cardano-testnet</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5490\" target=\"_blank\" rel=\"noopener noreferrer\">Integrate upstream libraries for 8.5</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-10-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-10T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-10-06-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Release <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.13.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.13.0</a></li><li>Published vulnerability reports <a href=\"https://github.com/input-output-hk/hydra/pull/1088\" target=\"_blank\" rel=\"noopener noreferrer\">#1088</a></li><li>Merged network resilience work part I <a href=\"https://github.com/input-output-hk/hydra/pull/1074\" target=\"_blank\" rel=\"noopener noreferrer\">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href=\"https://github.com/input-output-hk/hydra/pull/1095\" target=\"_blank\" rel=\"noopener noreferrer\">#1095</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete Aiken commit validator script <a href=\"https://github.com/input-output-hk/hydra/pull/1072\" target=\"_blank\" rel=\"noopener noreferrer\">#1072</a></li><li>Complete Kupo integration <a href=\"https://github.com/input-output-hk/hydra/issues/1078\" target=\"_blank\" rel=\"noopener noreferrer\">#1078</a></li><li>Brick upgrade on TUI <a href=\"https://github.com/input-output-hk/hydra/pull/1103\" target=\"_blank\" rel=\"noopener noreferrer\">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-06-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-10-06T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-10-06-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We've developed strategies for future benchmarks of PlutusV3 and UTxO-HD's on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the\nperformance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results\nshow all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"consensus-qtas\">Consensus QTAs<a class=\"hash-link\" href=\"#consensus-qtas\" title=\"Direct link to heading\">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The\nfeedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"development\">Development<a class=\"hash-link\" href=\"#development\" title=\"Direct link to heading\">​</a></h3><p>Benchmarking UTxO-HD's on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,\nwe'd like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service\nreceiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is\nmore performance critical, the receiving service must still minimize its resource footprint. Moreover, it can\ngenerate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster's topology. We repeated\nthe same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-06-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-06T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-10-04-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.\nWe also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/392\" target=\"_blank\" rel=\"noopener noreferrer\">392</a>).</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/366\" target=\"_blank\" rel=\"noopener noreferrer\">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/384\" target=\"_blank\" rel=\"noopener noreferrer\">384</a>).</li><li><a href=\"https://github.com/amesgen\" target=\"_blank\" rel=\"noopener noreferrer\">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/369\" target=\"_blank\" rel=\"noopener noreferrer\">369</a>).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-04-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-10-04T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-10-04-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href=\"https://github.com/input-output-hk/mithril/discussions/1273\" target=\"_blank\" rel=\"noopener noreferrer\">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href=\"https://github.com/input-output-hk/mithril/discussions/1273\" target=\"_blank\" rel=\"noopener noreferrer\">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1254\" target=\"_blank\" rel=\"noopener noreferrer\">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1220\" target=\"_blank\" rel=\"noopener noreferrer\">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1185\" target=\"_blank\" rel=\"noopener noreferrer\">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1103\" target=\"_blank\" rel=\"noopener noreferrer\">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1265\" target=\"_blank\" rel=\"noopener noreferrer\">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1267\" target=\"_blank\" rel=\"noopener noreferrer\">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1277\" target=\"_blank\" rel=\"noopener noreferrer\">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1274\" target=\"_blank\" rel=\"noopener noreferrer\">#1274</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-04-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-10-04T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-10-02-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-45\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 45</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-45\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4615\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4615</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"towards-typed-protocols-0200\">Towards Typed Protocols 0.2.0.0<a class=\"hash-link\" href=\"#towards-typed-protocols-0200\" title=\"Direct link to heading\">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we\nstarted investigating where it comes from.  Currently, we see that\n<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running\nin isolation with a simple <code>ping-pong</code> protocol, so the regression might be in\nthe new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>\nSee <a href=\"https://github.com/input-output-hk/typed-protocols/pull/3\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#3</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech Debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3834\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3832\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3836\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3836</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"io-sim\">IO-Sim<a class=\"hash-link\" href=\"#io-sim\" title=\"Direct link to heading\">​</a></h3><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iosimpor\">IOSimPOR<a class=\"hash-link\" href=\"#iosimpor\" title=\"Direct link to heading\">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We'd like to thank Prof. John Hughes\n(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the\ndebugging similar problems in the future easier.</p><details class=\"details_lb9f alert alert--info details_b_Ee\" data-collapsed=\"true\"><summary>Technical Details on IOSim refactoring</summary><div><div class=\"collapsibleContent_i85q\">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we'd need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iosim\">IOSim<a class=\"hash-link\" href=\"#iosim\" title=\"Direct link to heading\">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of\nthe public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is\na work in progress, <a href=\"https://github.com/input-output-hk/io-sim/issues/114\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#114</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-newtork-service-assurance\">Cardano Newtork Service Assurance<a class=\"hash-link\" href=\"#cardano-newtork-service-assurance\" title=\"Direct link to heading\">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation\nwas updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were\nmade.</li><li>Galois has started the design for adding a CNSA analysis for \"fetched bytes\nover time while node is syncing\".</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"p2p-adoption\">P2P adoption<a class=\"hash-link\" href=\"#p2p-adoption\" title=\"Direct link to heading\">​</a></h3><p>In the last two weeks, we've seen increase in P2P adoption.\n<img loading=\"lazy\" alt=\"P2P relays\" src=\"/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png\" width=\"2668\" height=\"1576\" class=\"img_ev3q\"></p><p>The following graphs show several different versions of relays running on the mainnet.  The\ngreen line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.\n<img loading=\"lazy\" alt=\"node versions\" src=\"/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png\" width=\"2674\" height=\"1580\" class=\"img_ev3q\"></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-source\">Open Source<a class=\"hash-link\" href=\"#open-source\" title=\"Direct link to heading\">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the\nPR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4676\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4676</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-10-02-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 45",
+            "date_modified": "2023-10-02T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-09-29-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is currently formalising mini protocols and testing the\nperformance analysis tool</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of\nprograms with local environments via synchronous channels</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-29-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-09-29T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-09-29-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability\nnetwork layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on\nhow to handle security vulnerability within Hydra, and in particular how to\nhandle so-called \"Silent fixes\".</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href=\"https://github.com/input-output-hk/hydra/pull/1088\" target=\"_blank\" rel=\"noopener noreferrer\">#1088</a></li><li>Adr/network reliability <a href=\"https://github.com/input-output-hk/hydra/pull/1082\" target=\"_blank\" rel=\"noopener noreferrer\">#1082</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href=\"https://github.com/input-output-hk/hydra/pull/1074\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href=\"https://github.com/input-output-hk/hydra/pull/1072\" target=\"_blank\" rel=\"noopener noreferrer\">#1072</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-29-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-09-29T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-09-29-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been\nfully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep's expiry is prevented by delaying the expiry for all DReps whenever there are no\nproposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to\nallow for individual Plutus language version updates, rather than requiring a complete\nreplacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some\noptimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for\nledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul\nof functionality for initial funds and staking injection whenever node starts up in\nConway, while bypassing all previous eras.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-era\">Conway era<a class=\"hash-link\" href=\"#conway-era\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3729\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3739\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3743\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3746\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3737\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3737</a> - Implement EraTransition</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3749\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3748\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3745\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3745</a> - Constitutional Committee Ratification</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3763\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3763</a> - Plutus interface improvements</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3771\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3766\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3765\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3765</a> - Improve native script handling</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3747\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3758\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3754\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"releasing\">Releasing<a class=\"hash-link\" href=\"#releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3742\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3744\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3744</a> - Changelog 8.4</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3752\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3753\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3760\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3760</a> - Fixup issues for release</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3764\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3734\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3735\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3728\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3728</a> - STS tests based on constraints</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3714\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3714</a> - Implement the remaining upgradable families</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3733\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3733</a> - Add some unit tests for Conway features</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3762\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3762</a> - Update CDDL for praos headers.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-29-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-29T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-09-29-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">8.4.0-pre</a>.</li><li>The use of cardano-node <a href=\"https://hub.docker.com/r/inputoutput/cardano-node\" target=\"_blank\" rel=\"noopener noreferrer\">docker hub</a> will be deprecated in preference of <a href=\"https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node\" target=\"_blank\" rel=\"noopener noreferrer\">GHCR</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href=\"https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/14\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-8</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/2\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href=\"https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href=\"https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-29-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-29T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-09-27-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team has released a new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2337.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href=\"https://mithril.network/doc/adr/6\" target=\"_blank\" rel=\"noopener noreferrer\">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1219\" target=\"_blank\" rel=\"noopener noreferrer\">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/798\" target=\"_blank\" rel=\"noopener noreferrer\">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1207\" target=\"_blank\" rel=\"noopener noreferrer\">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1127\" target=\"_blank\" rel=\"noopener noreferrer\">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1267\" target=\"_blank\" rel=\"noopener noreferrer\">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1254\" target=\"_blank\" rel=\"noopener noreferrer\">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1220\" target=\"_blank\" rel=\"noopener noreferrer\">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1230\" target=\"_blank\" rel=\"noopener noreferrer\">#1230</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-27-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-09-27T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-09-26-node-cli-api",
+            "content_html": "<h1>2023-09-13 - 2023-09-26</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/302\" target=\"_blank\" rel=\"noopener noreferrer\">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/298\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/295\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/292\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-cli: add governance create-info command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/287\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.9.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/286\" target=\"_blank\" rel=\"noopener noreferrer\">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/284\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/283\" target=\"_blank\" rel=\"noopener noreferrer\">Update cardano-api to 8.20.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/282\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unused governance-related code</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/281\" target=\"_blank\" rel=\"noopener noreferrer\">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/280\" target=\"_blank\" rel=\"noopener noreferrer\">Remove redundant conversions in JSON friendly instances </a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/279\" target=\"_blank\" rel=\"noopener noreferrer\">Regularise era based command structure</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/277\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify era handling</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/276\" target=\"_blank\" rel=\"noopener noreferrer\">Remove <code>--conway-era</code> flag</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/275\" target=\"_blank\" rel=\"noopener noreferrer\">Era-based <code>stake-pool</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/274\" target=\"_blank\" rel=\"noopener noreferrer\">Fix git revision in <code>version</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/273\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-cli-8.8.0.0</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/265\" target=\"_blank\" rel=\"noopener noreferrer\">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/264\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/262\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/256\" target=\"_blank\" rel=\"noopener noreferrer\">Delete unused eon constraints</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/255\" target=\"_blank\" rel=\"noopener noreferrer\">Export ByronEraOnly</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/254\" target=\"_blank\" rel=\"noopener noreferrer\">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/250\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/249\" target=\"_blank\" rel=\"noopener noreferrer\">Add JSON instance for Hash GenesisKey </a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/248\" target=\"_blank\" rel=\"noopener noreferrer\">Support more ledger constraints</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/247\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/246\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.20.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/245\" target=\"_blank\" rel=\"noopener noreferrer\">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/244\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/243\" target=\"_blank\" rel=\"noopener noreferrer\">Fix typos in some deserialization error messages</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/240\" target=\"_blank\" rel=\"noopener noreferrer\">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5480\" target=\"_blank\" rel=\"noopener noreferrer\">Trace Configuration Trace Message Enhancement</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5474\" target=\"_blank\" rel=\"noopener noreferrer\">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5467\" target=\"_blank\" rel=\"noopener noreferrer\">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5466\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node: reduce orphan instances</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5474\" target=\"_blank\" rel=\"noopener noreferrer\">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5471\" target=\"_blank\" rel=\"noopener noreferrer\">Update to cardano-cli 8.9.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5467\" target=\"_blank\" rel=\"noopener noreferrer\">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-26-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-26T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-09-22-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in\ncollaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability\nand identified concrete steps to enhance network resiliency in feature\nitems <a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a>,\n<a href=\"https://github.com/input-output-hk/hydra/issues/1080\" target=\"_blank\" rel=\"noopener noreferrer\">#1080</a>, and\n<a href=\"https://github.com/input-output-hk/hydra/issues/1079\" target=\"_blank\" rel=\"noopener noreferrer\">#1079</a>.\nAdditionally, they contributed the aiken-mode editor integration to the\naiken-lang organization, updated dependencies to utilize cardano-api\n8.20, and published the Hydra security advisory CVE-2023-42806 with a\nworkaround available for users.</p><p>These efforts demonstrate the team\\'s commitment to project improvement,\nsecurity, and open-source community collaboration.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command\n<a href=\"https://github.com/input-output-hk/hydra/pull/1077\" target=\"_blank\" rel=\"noopener noreferrer\">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested\nfeature items <a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a>,\n<a href=\"https://github.com/input-output-hk/hydra/issues/1080\" target=\"_blank\" rel=\"noopener noreferrer\">#1080</a> and\n<a href=\"https://github.com/input-output-hk/hydra/issues/1079\" target=\"_blank\" rel=\"noopener noreferrer\">#1079</a></li><li>Moved <a href=\"https://github.com/aiken-lang/aiken-mode\" target=\"_blank\" rel=\"noopener noreferrer\">aiken-mode</a> (created by SN)\nto aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20\n<a href=\"https://github.com/input-output-hk/hydra/pull/1075\" target=\"_blank\" rel=\"noopener noreferrer\">#1075</a></li><li>Published security advisory\n<a href=\"https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq\" target=\"_blank\" rel=\"noopener noreferrer\">CVE-2023-42806</a>\n(workaround available)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish \"network resilience to disconnects\"\n<a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a></li><li>Finish kupo integration with hydra\n<a href=\"https://github.com/input-output-hk/hydra/issues/1078\" target=\"_blank\" rel=\"noopener noreferrer\">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory\n<a href=\"https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq\" target=\"_blank\" rel=\"noopener noreferrer\">CVE-2023-42806</a>\n(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-22-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-09-22T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-09-22-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We've been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We're currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we've been equipping both that and the existing benchmarking\nbackend with means to measure and document network latency for each run. Furthermore we've implemented means to\ncapture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences\nin the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we're running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We've concluded that baseline profile runs aren't directly comparable between the two, so we decided\nto compare standard deviations instead to validate the measurements from nomad.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline\nhave been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we've looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document\nwhich runtime configuration the node arrived eventually. We're working on providing a machine-readable JSON/YAML\ntrace message for that purpose.  </p><p>This will facilitate hot-reloading a node's tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it\nproduces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an\nimpact on our measurements, as we'd be basically using two different instruments to take them.  </p><p>Along the way we've already been successful in eliminating some possible confounders that had been introduced by the nomad service\nor the slightly different system architecture of the new cluster.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-team-member\">New team member<a class=\"hash-link\" href=\"#new-team-member\" title=\"Direct link to heading\">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he's an excellent fit for our existing team.\nSo I'm very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-22-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-22T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-09-20-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.\nWe are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.\nOn the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.\nWe also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/349\" target=\"_blank\" rel=\"noopener noreferrer\">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node's baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/344\" target=\"_blank\" rel=\"noopener noreferrer\">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.\nWe are now drafting the final self-contained argument. (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4157\" target=\"_blank\" rel=\"noopener noreferrer\">4157</a>)</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/339\" target=\"_blank\" rel=\"noopener noreferrer\">339</a>).\nA superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/340\" target=\"_blank\" rel=\"noopener noreferrer\">340</a>, <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/354\" target=\"_blank\" rel=\"noopener noreferrer\">354</a>, and <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/355\" target=\"_blank\" rel=\"noopener noreferrer\">355</a>)\nHowever we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/345\" target=\"_blank\" rel=\"noopener noreferrer\">345</a> and <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/346\" target=\"_blank\" rel=\"noopener noreferrer\">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-20-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-20T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-09-20-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1200\" target=\"_blank\" rel=\"noopener noreferrer\">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/986\" target=\"_blank\" rel=\"noopener noreferrer\">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1127\" target=\"_blank\" rel=\"noopener noreferrer\">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/798\" target=\"_blank\" rel=\"noopener noreferrer\">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1230\" target=\"_blank\" rel=\"noopener noreferrer\">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1219\" target=\"_blank\" rel=\"noopener noreferrer\">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href=\"https://github.com/input-output-hk/mithril/issues/1238\" target=\"_blank\" rel=\"noopener noreferrer\">#1238</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-20-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-09-20T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-09-15-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is currently formalising mini protocols and also further\ndeveloping the performance modelling prototype.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-15-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-09-15T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-09-15-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in\nNantes, France. They used this oportunity to meet fellow mithril team and spend\nsome time together to hack on some code and, as always, reflect on the past work\nand find optimal path forward for both projects. They also fixed a bug that\ncaused hydra-node to crash when querying L1, worked on a new network resillience\nproof-of-concept and accepted a new ADR related to stateless transaction\nobservation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href=\"https://github.com/input-output-hk/hydra/pull/1048\" target=\"_blank\" rel=\"noopener noreferrer\">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href=\"https://github.com/input-output-hk/hydra/pull/1053\" target=\"_blank\" rel=\"noopener noreferrer\">#1053</a></li><li>Collected experimental CI findings <a href=\"https://github.com/input-output-hk/hydra/pull/1070\" target=\"_blank\" rel=\"noopener noreferrer\">#1070</a></li><li>Propose first POC for the network resilience <a href=\"https://github.com/input-output-hk/hydra/pull/1074\" target=\"_blank\" rel=\"noopener noreferrer\">#1074</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href=\"https://github.com/input-output-hk/hydra/pull/1072\" target=\"_blank\" rel=\"noopener noreferrer\">#1072</a></li><li>Complete hydra-support in kupo <a href=\"https://github.com/CardanoSolutions/kupo/pull/117\" target=\"_blank\" rel=\"noopener noreferrer\">kupo#117</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-15-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-09-15T00:00:00.000Z",
+            "author": {
+                "name": "Sasha Bogicevic",
+                "url": "https://github.com/v0d1ch"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-09-15-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Ledger team's focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial\nversion of Constitution. Priority in which Governance Action are now enacted matches the\nspecification. DRep's deposits are now properly accounted for. Governance actions that are\nnot allowed to be voted on by Stake Pool operators and Constitutional Committee members\nare prevented by transaction submission failure, rather than simply being ignored. There\nwas a few important CDDL fixes as well as a lot of new round trip serialization\ntests. Constraint based testing framework has also received a lot of improvements.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-era\">Conway era<a class=\"hash-link\" href=\"#conway-era\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3681\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3681</a> - Conway Genesis additions</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3690\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3705\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3700\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3704\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3698\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3698</a> - Reordering of governance actions</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3712\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3716\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3716</a> - Abstract threshold calculation</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3725\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3718\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3721\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3629\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3680\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3708\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3708</a> - Post release changes</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3730\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3697\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3709\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3726\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3713\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-15-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-15T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-09-15-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-44\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 44</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-44\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we\nidentified a possible improvement to bootstrap peers. A more detailed\ndescription is available <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4675\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-840-release\">Cardano-Node-8.4.0 Release<a class=\"hash-link\" href=\"#cardano-node-840-release\" title=\"Direct link to heading\">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final\nintegration <a href=\"https://github.com/input-output-hk/cardano-node/pull/5467\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> is currently being merged. We published\nnew versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"towards-typed-protocols-0200\">Towards Typed Protocols 0.2.0.0<a class=\"hash-link\" href=\"#towards-typed-protocols-0200\" title=\"Direct link to heading\">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with\n<code>cardano-node</code>.  This is towards our goal which we planned for the next\nquarter.  The identified tasks are to fix breaking tests, and then measure and\naddress possible performance regressions.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech Debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4663\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4663</a>,\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4661\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4661</a> and\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4660\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4660</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"p2p-adoption\">P2P adoption<a class=\"hash-link\" href=\"#p2p-adoption\" title=\"Direct link to heading\">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning\nthe number of SPOs or stakes, although the number of overall P2P relays has\nincreased.  Karl Knutsson (<a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano Foundation</a>) is investigating\nthis issue.\n<img loading=\"lazy\" alt=\"P2P relays\" src=\"/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png\" width=\"2014\" height=\"1586\" class=\"img_ev3q\"></p><p>The following graphs show several different versions of relays running on the mainnet.  The\ngreen line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly\nincrease over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>\nthe protocol indicates nodes version <code>1.35.x</code> or earlier.\n<img loading=\"lazy\" alt=\"node versions\" src=\"/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png\" width=\"2016\" height=\"1576\" class=\"img_ev3q\"></p><p>Data has been kindly provided by <a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano Foundation</a> and their mainnet\nmonitoring infrastructure.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-source\">Open Source<a class=\"hash-link\" href=\"#open-source\" title=\"Direct link to heading\">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-15-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 44",
+            "date_modified": "2023-09-15T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-09-15-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href=\"https://github.com/input-output-hk/cardano-parts\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href=\"https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href=\"https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href=\"https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-commit</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/8\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/10\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/11\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/12\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/13\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-13</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-perf\">Cardano-perf<a class=\"hash-link\" href=\"#cardano-perf\" title=\"Direct link to heading\">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href=\"https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-perf-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href=\"https://github.com/input-output-hk/cardano-playground/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href=\"https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href=\"https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-compare</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-15-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-15T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-09-14-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also\nthe team has ran a number of benchmarks and tests for the new options/flavours of DBSync\nand prepared a blogpost which summorises them, for downstream components.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1498\" target=\"_blank\" rel=\"noopener noreferrer\">#1498</a></li><li>Simplifications of new feautures\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1496\" target=\"_blank\" rel=\"noopener noreferrer\">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds\ntests for them\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1466\" target=\"_blank\" rel=\"noopener noreferrer\">#1466</a></li><li>CI fixes\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1494\" target=\"_blank\" rel=\"noopener noreferrer\">#1494</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1491\" target=\"_blank\" rel=\"noopener noreferrer\">#1491</a></li><li>Prepared a blogpost about different DBSync options\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">blog</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-14-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-14T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-09-12-node-cli-api",
+            "content_html": "<h1>2023-08-30 - 2023-09-12</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Release of <a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.\nThis release completes <a href=\"https://sancho.network/get-started#sanchonet-feature-rollout\" target=\"_blank\" rel=\"noopener noreferrer\">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming\n<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top\nof that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.\nRemoving <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/261\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/257\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/260\" target=\"_blank\" rel=\"noopener noreferrer\">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/256\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/254\" target=\"_blank\" rel=\"noopener noreferrer\">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/250\" target=\"_blank\" rel=\"noopener noreferrer\">#221 Update description fields on delegation certificates</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/249\" target=\"_blank\" rel=\"noopener noreferrer\">Update error message for eras mismatch between node and cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/248\" target=\"_blank\" rel=\"noopener noreferrer\">Era based <code>address</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/246\" target=\"_blank\" rel=\"noopener noreferrer\">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/245\" target=\"_blank\" rel=\"noopener noreferrer\">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/244\" target=\"_blank\" rel=\"noopener noreferrer\">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/243\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/242\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>node</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/241\" target=\"_blank\" rel=\"noopener noreferrer\">Era-based <code>stake-address</code> command group</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/240\" target=\"_blank\" rel=\"noopener noreferrer\">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/239\" target=\"_blank\" rel=\"noopener noreferrer\">Remove <code>EraBased</code> prefix from errors</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/238\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/237\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>key</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/236\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>query</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/235\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/234\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>pool</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/233\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/232\" target=\"_blank\" rel=\"noopener noreferrer\">Move <code>address</code> run command implementation into era-based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/231\" target=\"_blank\" rel=\"noopener noreferrer\">Delete legacy <code>conway governance</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/230\" target=\"_blank\" rel=\"noopener noreferrer\">Era sensitive transaction run commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/229\" target=\"_blank\" rel=\"noopener noreferrer\">Move transaction command code into era based</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/228\" target=\"_blank\" rel=\"noopener noreferrer\">Fix query <code>key-period-info</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/227\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/225\" target=\"_blank\" rel=\"noopener noreferrer\">Prefix complex delegation certificate option</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/233\" target=\"_blank\" rel=\"noopener noreferrer\">Fix test constraints functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/231\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/230\" target=\"_blank\" rel=\"noopener noreferrer\">Delete deprecated functions and types</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/228\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.19.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/226\" target=\"_blank\" rel=\"noopener noreferrer\"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/225\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/224\" target=\"_blank\" rel=\"noopener noreferrer\">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/222\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.18.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/221\" target=\"_blank\" rel=\"noopener noreferrer\">Fix exception when executing drep queries</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano-node 8.3.0-pre</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5460\" target=\"_blank\" rel=\"noopener noreferrer\">Fix deadlock issue with stdout tracer in tx-generator</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5453\" target=\"_blank\" rel=\"noopener noreferrer\">nix: workbench tracing configuration</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-12-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-12T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-09-08-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline\ndatums. They simplified the chain layer by refactoring how the chain state is\npersisted. Updates to the Hydra tutorial were completed, including CI workflows\nto keep it up-to-date. The team engaged in discussions with researchers about\nincremental commits &amp; decommits, and drafted an architectural decision record\nfor a resource-based API. They also explored simpler solutions for the upcoming\nnetwork resilience feature.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Support InlineScriptDatum in commit\n<a href=\"https://github.com/input-output-hk/hydra/issues/1043\" target=\"_blank\" rel=\"noopener noreferrer\">#1043</a></li><li>Refactored chain state persistency\n<a href=\"https://github.com/input-output-hk/hydra/pull/1049\" target=\"_blank\" rel=\"noopener noreferrer\">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)\n<a href=\"https://github.com/input-output-hk/hydra/issues/997\" target=\"_blank\" rel=\"noopener noreferrer\">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \\\"Network\nresilience problem\\\" to find a KISS solution for\n<a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a></li><li>Drafted and discussed incremental de-/commit features within team\nand with researchers\n<a href=\"https://github.com/input-output-hk/hydra/issues/199\" target=\"_blank\" rel=\"noopener noreferrer\">#199</a> and\n<a href=\"https://github.com/input-output-hk/hydra/issues/1057\" target=\"_blank\" rel=\"noopener noreferrer\">#1057</a></li><li>Created ADR for a resource based overhaul of the API\n<a href=\"https://github.com/input-output-hk/hydra/pull/1028\" target=\"_blank\" rel=\"noopener noreferrer\">#1028</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already\nunderstood)</li><li>An ADR for improving tx construction &amp; observation to not need chain\nstate</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-08-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-09-08T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-09-07-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team has released a new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2335.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href=\"https://github.com/input-output-hk/mithril/issues/876\" target=\"_blank\" rel=\"noopener noreferrer\">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1155\" target=\"_blank\" rel=\"noopener noreferrer\">#1155</a></li><li>Completed the issue <code>Provide progress information with '--json' option in Client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1095\" target=\"_blank\" rel=\"noopener noreferrer\">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1115\" target=\"_blank\" rel=\"noopener noreferrer\">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href=\"https://github.com/input-output-hk/mithril/issues/948\" target=\"_blank\" rel=\"noopener noreferrer\">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href=\"https://github.com/input-output-hk/mithril/issues/947\" target=\"_blank\" rel=\"noopener noreferrer\">#947</a></li><li>Completed the issue <code>Post deployment 'mainnet' infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1091\" target=\"_blank\" rel=\"noopener noreferrer\">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href=\"https://github.com/input-output-hk/mithril/issues/798\" target=\"_blank\" rel=\"noopener noreferrer\">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/986\" target=\"_blank\" rel=\"noopener noreferrer\">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1160\" target=\"_blank\" rel=\"noopener noreferrer\">#1160</a></li><li>Completed the issue <code>Update 'ed25519-dalek' to '2.0.0'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1188\" target=\"_blank\" rel=\"noopener noreferrer\">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1151\" target=\"_blank\" rel=\"noopener noreferrer\">#1151</a></li><li>Completed the issue <code>Fix end to end 'wait_for_the_expected_time' test</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1191\" target=\"_blank\" rel=\"noopener noreferrer\">#1191</a></li><li>Completed the issue <code>Fix docs 'git checkout' command</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1174\" target=\"_blank\" rel=\"noopener noreferrer\">#1174</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-07-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-09-07T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-09-07-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We're productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>We've completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node's traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation\noperation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point\nin time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.\nThis feature enables feedback on when tracer implementation details in some component might have changed. It's also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we've created a fine-grained configuration of the new system that caters to benchmarking's need of very many\ndetailed trace messages. It's aimed at mirroring the same amount of trace messages, and information, we're seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we're using it in production mode to comparatively benchmark both tracing systems after merging past month's optimizations - which is the\nfirst real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-07-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-07T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-09-06-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.\nOn the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.\nThe Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/203\" target=\"_blank\" rel=\"noopener noreferrer\">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/344\" target=\"_blank\" rel=\"noopener noreferrer\">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418\" target=\"_blank\" rel=\"noopener noreferrer\">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/344\" target=\"_blank\" rel=\"noopener noreferrer\">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3099\" target=\"_blank\" rel=\"noopener noreferrer\">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/323\" target=\"_blank\" rel=\"noopener noreferrer\">#323</a>).</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/nfrisby\" target=\"_blank\" rel=\"noopener noreferrer\">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3491\" target=\"_blank\" rel=\"noopener noreferrer\">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/91\" target=\"_blank\" rel=\"noopener noreferrer\">#91</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-06-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-06T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-09-01-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is currently formalising mini protocols and also further\ndeveloping the performance modelling prototype.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the\nformal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-01-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-09-01T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-09-01-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network\nlayer and have the first draft document related to needed design. They also\nimproved the user experience by allowing a commit using inline datums.\nDiscussed the off-chain governance with researchers and improved internal model\ntests. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Have a clear understanding of the changes we need for the \"Improve network resiliency\" feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-01-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-09-01T00:00:00.000Z",
+            "author": {
+                "name": "Sasha Bogicevic",
+                "url": "https://github.com/v0d1ch"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-09-01-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-era\">Conway era<a class=\"hash-link\" href=\"#conway-era\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3659\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3637\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3651\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3651</a> - Inactive DReps</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3664\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3664</a> - Track proposal expiry</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3668\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3669\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3676\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3635\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3670\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3670</a> - Validate previously enacted govAction</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3694\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3674\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3674</a> - Added RATIFY thresholds</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3684\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3688\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3677\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3686\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3686</a> - Post patch release fixup</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3695\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3683\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3662\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3662</a> - Equality on raw types</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-01-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-01T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-09-01-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-43\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 43</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-43\" title=\"Direct link to heading\">​</a></h2><p>In this sprint, we received contributions from <a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">CF</a> &amp; <a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a>.  Karl Knutsson\n(<a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts\nand our <code>WireShark</code> dissector.  While the <a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a> developers focused on\naddressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4661\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to\nbe run natively on all platforms (these tests mostly contain tests that\nrequire <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We\nrun <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,\n<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.\nThe <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on\nGitHub Actions runners. <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4653\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>\nversion.  So far he integrated <code>cardano-ledger-conway-1.8</code> and\n<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and\n<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,\n<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released\nto <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered\nby Karl from <a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">CF</a>). More details are included below.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"progress-on-p2p-addoption\">Progress on P2P addoption<a class=\"hash-link\" href=\"#progress-on-p2p-addoption\" title=\"Direct link to heading\">​</a></h3><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"spo-relays\">SPO relays<a class=\"hash-link\" href=\"#spo-relays\" title=\"Direct link to heading\">​</a></h4><p>There are currently ~2000 relays running P2P\nenabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On\n16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil\nAda.</p><p><img loading=\"lazy\" alt=\"P2P relays\" src=\"/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png\" width=\"2034\" height=\"1588\" class=\"img_ev3q\"></p><p>The following graphs show several different versions of relays running on the mainnet.  The\ngreen line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly\nincrease over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>\nthe protocol indicates nodes version <code>1.35.x</code> or earlier.\n<img loading=\"lazy\" alt=\"node versions\" src=\"/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png\" width=\"2038\" height=\"1594\" class=\"img_ev3q\"></p><p>Data has been kindly provided by <a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">CF</a> and their mainnet monitoring\ninfrastructure.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iog-relays\">IOG relays<a class=\"hash-link\" href=\"#iog-relays\" title=\"Direct link to heading\">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all\nIOG relays will be running P2P.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-description\">Detailed description<a class=\"hash-link\" href=\"#detailed-description\" title=\"Direct link to heading\">​</a></h2><p>In this sprint, we got a few contributions from <a href=\"https://cardanofoundation.org/\" target=\"_blank\" rel=\"noopener noreferrer\">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4656\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>\nminiprotocols.  These timeouts help a node remove idle connections from the\nresponder (server) side <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4648\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4656\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4656</a>.</li></ul><p><a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a>) has been working on refactoring the main entry function of P2P <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4661\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href=\"https://galois.com/\" target=\"_blank\" rel=\"noopener noreferrer\">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4661\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4661</a> (in review).</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"peer-sharing\">Peer Sharing<a class=\"hash-link\" href=\"#peer-sharing\" title=\"Direct link to heading\">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4652\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It's supposed to relay the\nremote value, but instead, it returns the local value. <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4642\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4642</a> (in review).</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"async-demotion-test-fix\">Async Demotion Test Fix<a class=\"hash-link\" href=\"#async-demotion-test-fix\" title=\"Direct link to heading\">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of\nthe test itself rather than a bug in the connection manager. <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4655\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-#4655</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-01-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 43",
+            "date_modified": "2023-09-01T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-09-01-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href=\"https://github.com/input-output-hk/capkgs\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs</a> repository started -- \"Content Addressed Packages\"<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don't have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"capkgs\">Capkgs<a class=\"hash-link\" href=\"#capkgs\" title=\"Direct link to heading\">​</a></h3><ul><li>Content addressed packages -- new repo: <a href=\"https://github.com/input-output-hk/capkgs\" target=\"_blank\" rel=\"noopener noreferrer\">capkgs</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href=\"https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>Flake devShell module improvements: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/4\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/5\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/6\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/7\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href=\"https://github.com/input-output-hk/cardano-parts/pull/8\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href=\"https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-perf\">Cardano-perf<a class=\"hash-link\" href=\"#cardano-perf\" title=\"Direct link to heading\">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href=\"https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-perf-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href=\"https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sanchonet-demo\">Sanchonet-demo<a class=\"hash-link\" href=\"#sanchonet-demo\" title=\"Direct link to heading\">​</a></h3><ul><li>Sanchonet demonstration repository: <a href=\"https://github.com/input-output-hk/sanchonet-demo\" target=\"_blank\" rel=\"noopener noreferrer\">sanchonet-demo</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-09-01-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-09-01T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-08-29-node-cli-api",
+            "content_html": "<h1>2023-08-16 - 2023-08-29</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger's PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">- GetGovState</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">- GetDRepState</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">- GetDRepStakeDistr</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">- GetCommitteeState</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">- GetConstitution</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/179\" target=\"_blank\" rel=\"noopener noreferrer\">Add goverance info action creation to era based cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/176\" target=\"_blank\" rel=\"noopener noreferrer\">Add create-no-confidence command to era based cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/175\" target=\"_blank\" rel=\"noopener noreferrer\">Add create-new-committee command to era based cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/204\" target=\"_blank\" rel=\"noopener noreferrer\">Enable <code>--drep-script-hash</code> option</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/211\" target=\"_blank\" rel=\"noopener noreferrer\">Remove <code>experimental</code> subcommand</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/210\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/194\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>governance drep id</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/189\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>governance query</code> commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/187\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/203\" target=\"_blank\" rel=\"noopener noreferrer\">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/201\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.6.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/195\" target=\"_blank\" rel=\"noopener noreferrer\">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/193\" target=\"_blank\" rel=\"noopener noreferrer\">Add test for conway governance action create-constitution</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/192\" target=\"_blank\" rel=\"noopener noreferrer\">Move legacy errors out of legacy command structure modules</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/191\" target=\"_blank\" rel=\"noopener noreferrer\">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/188\" target=\"_blank\" rel=\"noopener noreferrer\">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/186\" target=\"_blank\" rel=\"noopener noreferrer\">Move some error types</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/185\" target=\"_blank\" rel=\"noopener noreferrer\">Delete unused module</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/183\" target=\"_blank\" rel=\"noopener noreferrer\">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/182\" target=\"_blank\" rel=\"noopener noreferrer\">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/180\" target=\"_blank\" rel=\"noopener noreferrer\">Remove example era-based parsers we don't need anymore</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/174\" target=\"_blank\" rel=\"noopener noreferrer\">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/216\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/214\" target=\"_blank\" rel=\"noopener noreferrer\">Replace ProtocolParameters usage with ledger's PParams</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/210\" target=\"_blank\" rel=\"noopener noreferrer\">Use injective type families to improve type inference</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/209\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/208\" target=\"_blank\" rel=\"noopener noreferrer\">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/207\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/206\" target=\"_blank\" rel=\"noopener noreferrer\">Expose ledger lenses for governance types</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/205\" target=\"_blank\" rel=\"noopener noreferrer\">New version cardano-api-8.16.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/204\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>VotingProcedures</code> type</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/202\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.16.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/200\" target=\"_blank\" rel=\"noopener noreferrer\">Update createAnchor to use hashAnchorData</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/197\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.15.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/196\" target=\"_blank\" rel=\"noopener noreferrer\">Add consensus governance queries</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-29-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-29T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-08-28-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1097\" target=\"_blank\" rel=\"noopener noreferrer\">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1106\" target=\"_blank\" rel=\"noopener noreferrer\">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href=\"https://github.com/input-output-hk/mithril/issues/668\" target=\"_blank\" rel=\"noopener noreferrer\">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1078\" target=\"_blank\" rel=\"noopener noreferrer\">#1078</a></li><li>Completed the issue <code>Use the '/signers/registered' route to verify if a signer is registered</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1152\" target=\"_blank\" rel=\"noopener noreferrer\">#1152</a></li><li>Worked on the issue <code>Provide progress information with '--json' option in Client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1095\" target=\"_blank\" rel=\"noopener noreferrer\">#1095</a></li><li>Worked on the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href=\"https://github.com/input-output-hk/mithril/issues/876\" target=\"_blank\" rel=\"noopener noreferrer\">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1115\" target=\"_blank\" rel=\"noopener noreferrer\">#1115</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-28-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-08-28T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-08-25-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which\ncontinously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at\nRareEvo workshop as an educational initiative for the community.\nAdditionally, the team updated the Hydra demo and tutorial to include Mithril\nand latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve\n<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a\nbad user experience.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a></li><li>New ADR for “Resourced based API” <a href=\"https://github.com/input-output-hk/hydra/pull/1028\" target=\"_blank\" rel=\"noopener noreferrer\">#1028</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Have a poc on network resilience working <a href=\"https://github.com/input-output-hk/hydra/issues/188\" target=\"_blank\" rel=\"noopener noreferrer\">#188</a></li><li>Fix issue <a href=\"https://github.com/input-output-hk/hydra/issues/931\" target=\"_blank\" rel=\"noopener noreferrer\">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href=\"https://github.com/input-output-hk/hydra/issues/1039\" target=\"_blank\" rel=\"noopener noreferrer\">#1039</a>: \"Close transaction dropped from cardano-node\"</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-25-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-08-25T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-08-24-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we're developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We're performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>We've performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we're working on respective integrations on both those paths.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held\nin memory, which wouldn't fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell's native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We're splitting out everything that's verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We're able to perform full runs on the new hardware cluster\nand porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-24-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-24T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-08-23-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.\nOn the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/314\" target=\"_blank\" rel=\"noopener noreferrer\">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/305\" target=\"_blank\" rel=\"noopener noreferrer\">#305</a>).</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href=\"https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api\" target=\"_blank\" rel=\"noopener noreferrer\">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop\" target=\"_blank\" rel=\"noopener noreferrer\">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/275\" target=\"_blank\" rel=\"noopener noreferrer\">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/284\" target=\"_blank\" rel=\"noopener noreferrer\">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/273\" target=\"_blank\" rel=\"noopener noreferrer\">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/nfrisby\" target=\"_blank\" rel=\"noopener noreferrer\">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/283\" target=\"_blank\" rel=\"noopener noreferrer\">#283</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/301\" target=\"_blank\" rel=\"noopener noreferrer\">#301</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/304\" target=\"_blank\" rel=\"noopener noreferrer\">#304</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/308\" target=\"_blank\" rel=\"noopener noreferrer\">#308</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-23-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-23T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-08-18-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is currently formalising mini protocols and also further\ndeveloping the performance modelling prototype.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of\nprograms to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)\nmini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part\nof 4th year masters course on distributed systemsby colleagues at UC\nLouvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part\nof a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and\nwrote property tests for its algebraic laws</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-18-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-08-18T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-08-18-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that\nbrings support for cardano-node 8.1.2, along with performance enhancements and\nvarious API improvements. Additionally, the team successfully onboarded a new\ncontributor who is now actively participating in operating a Hydra Head. They\ntook part in a meeting of the Intersect open source committee and prepared the\nHydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href=\"https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true\" target=\"_blank\" rel=\"noopener noreferrer\">using this\nform</a>.\nWe hope to make it possible to follow along on-line as well and will announce\ndetails on the Hydra announcements channel on the <a href=\"https://discord.gg/Qq5vNTg9PT\" target=\"_blank\" rel=\"noopener noreferrer\">IOG discord\nserver</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance\nand several API improvements. <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.12.0\" target=\"_blank\" rel=\"noopener noreferrer\">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href=\"https://github.com/input-output-hk/hydra/issues/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-18-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-08-18T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-08-18-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting\nfor DRep and Stake Pool Operators is now at the state that can be used by downstream\ncomponents. Addition of new ledger state queries makes it possible to verify changes to\nthe governance state, such as placement of votes, submission of governance proposals,\ninspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the\nability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-progress\">Conway progress<a class=\"hash-link\" href=\"#conway-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3577\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3609\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3604\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3604</a> - README: update CIP-1694 link</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3616\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3599\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3599</a> - Add governance action well-formedness check</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3607\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3607</a> - Rename governance to gov</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3601\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3615\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3596\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3596</a> - Upgradeable families</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3625\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3592\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3523\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3523</a> - Treasury donations</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3633\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3634\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3630\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3630</a> - Implemented DRep refreshing</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3640\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3636\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3636</a> - Implement DRep ratification with an \"always passing\"; threshold</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3648\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3648</a> - Governance queries</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3650\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3658\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3628\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3619\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3619</a> - Disabled a broken test</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3660\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3660</a> - Fix bounds and versions</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3661\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-18-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-18T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-08-18-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-42\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 42</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-42\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"eclipse-evasion\">Eclipse Evasion<a class=\"hash-link\" href=\"#eclipse-evasion\" title=\"Direct link to heading\">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version\n<code>0.9.0.0</code>) which includes <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3886\" target=\"_blank\" rel=\"noopener noreferrer\">big ledger peers feature</a>.\nThis is the primary peer selection mechanism to defend against eclipses.   We\nalso prepared a PR to updated <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/165\" target=\"_blank\" rel=\"noopener noreferrer\"><code>ouroboros-cosnensus</code></a>\nand <a href=\"https://github.com/input-output-hk/ekg-forward/pull/30\" target=\"_blank\" rel=\"noopener noreferrer\"><code>ekg-forward</code></a> packages.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cddl-specs-for-protocol-codecs\">CDDL specs for protocol codecs<a class=\"hash-link\" href=\"#cddl-specs-for-protocol-codecs\" title=\"Direct link to heading\">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation\nwhich is highly polymorphic.  <code>cddl</code> doesn't have the notion of polymorphism,\nbut has <code>any</code> which can generate any valid cbor term.  We matched it with an\n<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.\nThis simplified the specifications and made it easier to understand which parts\nare defined in the spec, and which parts are left unspecified.  See\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4595\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4595</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ouroboros-network-framework-api-changes\">Ouroboros-Network-Framework API changes<a class=\"hash-link\" href=\"#ouroboros-network-framework-api-changes\" title=\"Direct link to heading\">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.\nThe <code>ouroboros-network-framework</code> package contains a redesign of API exposed to\n<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to\nextend in the future if there will be new arguments that need to be passed to\nmini-protocol initiator and responders which comes from the low-level network\nlayer.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nix-setup-ci\">Nix setup (CI)<a class=\"hash-link\" href=\"#nix-setup-ci\" title=\"Direct link to heading\">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team\nwe ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,\n<code>hls</code>, <code>cddl</code>, and more.  See <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4640\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4640</a>,\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4643\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4643</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"other-contributions\">Other contributions<a class=\"hash-link\" href=\"#other-contributions\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-network-service-assurance\">Cardano Network Service Assurance<a class=\"hash-link\" href=\"#cardano-network-service-assurance\" title=\"Direct link to heading\">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first\ncontract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted\ncode &amp; design review.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"galois-review\">Galois Review<a class=\"hash-link\" href=\"#galois-review\" title=\"Direct link to heading\">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3832\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3832</a>,</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3834\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3834</a>,</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3835\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3835</a>,</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3836\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci\">CI<a class=\"hash-link\" href=\"#ci\" title=\"Direct link to heading\">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be\nexecuted with extra concurrency <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4637\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4637</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4649\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4649</a>.</p><p>We also added GitHub's dependabot <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4650\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4650</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bootstrap-peers\">Bootstrap Peers<a class=\"hash-link\" href=\"#bootstrap-peers\" title=\"Direct link to heading\">​</a></h3><p>We settled on implementation design of bootstrap peers which is being\nimplemented, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4615\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4615</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-18-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 42",
+            "date_modified": "2023-08-18T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-08-18-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href=\"https://flake.parts\" target=\"_blank\" rel=\"noopener noreferrer\">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href=\"https://github.com/input-output-hk/cardano-parts\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href=\"https://github.com/input-output-hk/cardano-playground\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href=\"https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-parts\">Cardano-parts<a class=\"hash-link\" href=\"#cardano-parts\" title=\"Direct link to heading\">​</a></h3><ul><li>New repo: <a href=\"https://github.com/input-output-hk/cardano-parts\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-parts</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-perf\">Cardano-perf<a class=\"hash-link\" href=\"#cardano-perf\" title=\"Direct link to heading\">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href=\"https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-perf-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-playground\">Cardano-playground<a class=\"hash-link\" href=\"#cardano-playground\" title=\"Direct link to heading\">​</a></h3><ul><li>New repo: <a href=\"https://github.com/input-output-hk/cardano-playground\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-playground</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href=\"https://github.com/input-output-hk/cardano-world/pull/109\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-109</a></li><li>Update p2p configs: <a href=\"https://github.com/input-output-hk/cardano-world/pull/110\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-110</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"inputs-check\">Inputs-check<a class=\"hash-link\" href=\"#inputs-check\" title=\"Direct link to heading\">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href=\"https://github.com/input-output-hk/inputs-check\" target=\"_blank\" rel=\"noopener noreferrer\">inputs-check</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-18-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-18T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-08-17-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Full Node Verifier merged <a href=\"https://github.com/input-output-hk/mithril/pull/939\" target=\"_blank\" rel=\"noopener noreferrer\">#939</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href=\"https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta\" target=\"_blank\" rel=\"noopener noreferrer\">this</a> fork.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href=\"https://github.com/input-output-hk/kes-agent/issues/19\" target=\"_blank\" rel=\"noopener noreferrer\">#19</a></li><li>Receipt confirmation message <a href=\"https://github.com/input-output-hk/kes-agent/issues/20\" target=\"_blank\" rel=\"noopener noreferrer\">#20</a></li><li>KES agent binary ready <a href=\"https://github.com/input-output-hk/kes-agent/issues/21\" target=\"_blank\" rel=\"noopener noreferrer\">#21</a></li><li>Control client implemented <a href=\"https://github.com/input-output-hk/kes-agent/issues/11\" target=\"_blank\" rel=\"noopener noreferrer\">#11</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-17-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-17T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-08-17-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.\nWe also continued testing and improving the new db-sync options.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Conway integration\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1484\" target=\"_blank\" rel=\"noopener noreferrer\">#1484</a></li><li>Support for Sanchonet\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1476\" target=\"_blank\" rel=\"noopener noreferrer\">#1476</a></li><li>Stake distribution is computed earlier\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1484\" target=\"_blank\" rel=\"noopener noreferrer\">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1484\" target=\"_blank\" rel=\"noopener noreferrer\">#1484</a></li><li>Testing new db-sync options\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1466\" target=\"_blank\" rel=\"noopener noreferrer\">#1466</a></li><li>Added support for ghc-9.6\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1479\" target=\"_blank\" rel=\"noopener noreferrer\">#1479</a></li><li>Tech debt: improve exceptions\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1471\" target=\"_blank\" rel=\"noopener noreferrer\">#1471</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-17-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-17T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-08-17-secp-issue",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"security-issue-report-secp256k1-bug\">Security Issue Report: SECP256k1 bug<a class=\"hash-link\" href=\"#security-issue-report-secp256k1-bug\" title=\"Direct link to heading\">​</a></h2><p>Date Occurred: July 15, 2022\nSeverity:  Potentially Very High if exploited on Mainnet\nAuthors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"summary-of-issue\">Summary of Issue<a class=\"hash-link\" href=\"#summary-of-issue\" title=\"Direct link to heading\">​</a></h3><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"criticality-level\">Criticality Level<a class=\"hash-link\" href=\"#criticality-level\" title=\"Direct link to heading\">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet\nContext</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.\nHow was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-action-was-taken\">What Action was Taken<a class=\"hash-link\" href=\"#what-action-was-taken\" title=\"Direct link to heading\">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).\nFixes were applied to prevent the use of the primitives.\nA full security audit was carried out on the bindings.\nThe rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"potential-effect\">Potential Effect<a class=\"hash-link\" href=\"#potential-effect\" title=\"Direct link to heading\">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"actual-effect\">Actual Effect<a class=\"hash-link\" href=\"#actual-effect\" title=\"Direct link to heading\">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ongoing-mitigations-needed-if-any\">Ongoing Mitigations Needed, if any<a class=\"hash-link\" href=\"#ongoing-mitigations-needed-if-any\" title=\"Direct link to heading\">​</a></h4><p>None</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"responsibility-for-mitigations\">Responsibility for Mitigations<a class=\"hash-link\" href=\"#responsibility-for-mitigations\" title=\"Direct link to heading\">​</a></h4><p>Core team</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-description-of-incident\">Detailed description of Incident<a class=\"hash-link\" href=\"#detailed-description-of-incident\" title=\"Direct link to heading\">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin's library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href=\"https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518\" target=\"_blank\" rel=\"noopener noreferrer\">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href=\"https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61\" target=\"_blank\" rel=\"noopener noreferrer\">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href=\"https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170\" target=\"_blank\" rel=\"noopener noreferrer\">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href=\"https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10\" target=\"_blank\" rel=\"noopener noreferrer\">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href=\"https://github.com/input-output-hk/cardano-base/pull/289\" target=\"_blank\" rel=\"noopener noreferrer\">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"recommendations\">Recommendations<a class=\"hash-link\" href=\"#recommendations\" title=\"Direct link to heading\">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are \"safe\". Treat all external calls circumspectly.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-17-secp-issue",
+            "title": "SECP bindings Security Issue Report",
+            "summary": "Security Issue Report: SECP256k1 bug",
+            "date_modified": "2023-08-17T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-08-15-node-cli-api",
+            "content_html": "<h1>2023-08-02 - 2023-08-15</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/169\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/164\" target=\"_blank\" rel=\"noopener noreferrer\">Reenable golden tests</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/163\" target=\"_blank\" rel=\"noopener noreferrer\">#128 DRep key generation</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/160\" target=\"_blank\" rel=\"noopener noreferrer\">Bump index states</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/159\" target=\"_blank\" rel=\"noopener noreferrer\">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/158\" target=\"_blank\" rel=\"noopener noreferrer\">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/151\" target=\"_blank\" rel=\"noopener noreferrer\">Plural for command groups</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/144\" target=\"_blank\" rel=\"noopener noreferrer\">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/142\" target=\"_blank\" rel=\"noopener noreferrer\">Wire up constitution creation in the new era based cli commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/140\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-cli 8.5.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/137\" target=\"_blank\" rel=\"noopener noreferrer\">Wire up remaining DReps</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/136\" target=\"_blank\" rel=\"noopener noreferrer\">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/127\" target=\"_blank\" rel=\"noopener noreferrer\">Convert to use <code>tasty-discover</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/189\" target=\"_blank\" rel=\"noopener noreferrer\">Release cardano-api 8.13.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/187\" target=\"_blank\" rel=\"noopener noreferrer\">Fix build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/185\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-api 8.13.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/181\" target=\"_blank\" rel=\"noopener noreferrer\">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/180\" target=\"_blank\" rel=\"noopener noreferrer\">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/173\" target=\"_blank\" rel=\"noopener noreferrer\">Delete deprecated functions and types</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/171\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify code with new constraints functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/170\" target=\"_blank\" rel=\"noopener noreferrer\">Fix <code>EraCast Certificate</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/168\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/167\" target=\"_blank\" rel=\"noopener noreferrer\">Fix committee hot keys</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/164\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/163\" target=\"_blank\" rel=\"noopener noreferrer\">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5430\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-git-rev: New version for CHaP</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5427\" target=\"_blank\" rel=\"noopener noreferrer\">Fix broken links in docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5423\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node 8.2.1</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5427\" target=\"_blank\" rel=\"noopener noreferrer\">Fix broken links in docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5423\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node 8.2.1</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5427\" target=\"_blank\" rel=\"noopener noreferrer\">Fix broken links in docs</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/127\" target=\"_blank\" rel=\"noopener noreferrer\">Convert to use <code>tasty-discover</code></a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-15-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-15T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-08-11-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version\n8.1.2, ensuring compatibility with the latest mainnet release. The team also\nparticipated in discussions about a \"cardanonical\" JSON schema and added it as a\nsubmodule to the project, contributing to improved data modeling and\ninteroperability.</p><p>In terms of community engagement, the team successfully onboarded a new\ncontributor, also participated in a RareEvo Twitter space, and continued\npreparations for the Hydra master-class.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href=\"https://github.com/input-output-hk/hydra/issues/1007\" target=\"_blank\" rel=\"noopener noreferrer\">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and\nadd it as submodule to the project\n<a href=\"https://github.com/input-output-hk/hydra/pull/1013\" target=\"_blank\" rel=\"noopener noreferrer\">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href=\"https://github.com/input-output-hk/hydra/issues/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a></li><li>Release 0.12.0</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-11-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-08-11T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-08-11-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we're currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>As part of our release benchmarking cycle, we've completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,\nwe're working on having a trace message self-document the final tracing configuration of a running node. Apart from adding\ninsight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we're setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent\nand reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were\nable to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-11-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-11T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-08-10-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team completed the <strong>Mithril protocol’s mainnet beta</strong> launch: the <code>release-mainnet</code> network is now consistently producing new certificates and snapshots! The team has released a new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2331.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2331.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2331.1</code></a></li><li>Completed the epic <code>Release 'mainnet' Mithril network</code> <a href=\"https://github.com/input-output-hk/mithril/issues/918\" target=\"_blank\" rel=\"noopener noreferrer\">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/904\" target=\"_blank\" rel=\"noopener noreferrer\">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href=\"https://github.com/input-output-hk/mithril/issues/991\" target=\"_blank\" rel=\"noopener noreferrer\">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment 'mainnet' infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1091\" target=\"_blank\" rel=\"noopener noreferrer\">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1085\" target=\"_blank\" rel=\"noopener noreferrer\">#1085</a></li><li>Completed the issue <code>Ingest 'mainnet' metrics/logs in Grafana</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1122\" target=\"_blank\" rel=\"noopener noreferrer\">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a 'clean' file to extracted database in client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1131\" target=\"_blank\" rel=\"noopener noreferrer\">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1097\" target=\"_blank\" rel=\"noopener noreferrer\">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href=\"https://github.com/input-output-hk/mithril/issues/668\" target=\"_blank\" rel=\"noopener noreferrer\">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1137\" target=\"_blank\" rel=\"noopener noreferrer\">#1137</a></li><li>Completed the issue <code>The 'release-preprod' network stopped producing certificates</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1114\" target=\"_blank\" rel=\"noopener noreferrer\">#1114</a></li><li>Completed the issue <code>The 'release-mainnet' network does not show up in the explorer</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1111\" target=\"_blank\" rel=\"noopener noreferrer\">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.2'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1090\" target=\"_blank\" rel=\"noopener noreferrer\">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can't sign with 'Invalid signature for party' error</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1125\" target=\"_blank\" rel=\"noopener noreferrer\">#1125</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-10-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-08-10T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-08-09-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/256\" target=\"_blank\" rel=\"noopener noreferrer\">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/261\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href=\"https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd\" target=\"_blank\" rel=\"noopener noreferrer\">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/273\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/nfrisby\" target=\"_blank\" rel=\"noopener noreferrer\">Frisby</a> and <a href=\"https://github.com/amesgen\" target=\"_blank\" rel=\"noopener noreferrer\">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/273\" target=\"_blank\" rel=\"noopener noreferrer\">#273</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/nfrisby\" target=\"_blank\" rel=\"noopener noreferrer\">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn't happened yet.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-09-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-09T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-08-04-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Work on a mithril flaky test <a href=\"https://github.com/input-output-hk/mithril/pull/1105\" target=\"_blank\" rel=\"noopener noreferrer\">#1105</a></li><li>Keep working on Full Node Verifier <a href=\"https://github.com/input-output-hk/mithril/pull/939\" target=\"_blank\" rel=\"noopener noreferrer\">#939</a>.\nShould be merged in the coming week.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>Finalised the fuzz tests <a href=\"https://github.com/input-output-hk/musig2/pull/43\" target=\"_blank\" rel=\"noopener noreferrer\">#43</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-08-04-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is formalising mini protocols and also further developing the\nperformance modelling prototype.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Developing new framework for specification and verification of\nmini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that\nallows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-08-04-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the\nproject. The team updated the use case section for auctions on the <a href=\"https://hydra.family/head-protocol/unstable/use-cases/\" target=\"_blank\" rel=\"noopener noreferrer\">/unstable</a>\nbranch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced\npersistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves\noff-chain transaction processing performance. They also added a\n<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community\nreviews for several catalyst proposals related to Hydra and Mithril,\ncontributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href=\"https://hydra.family/head-protocol/monthly/2023-07\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Published the <a href=\"https://hydra.family/head-protocol/monthly/2023-07\" target=\"_blank\" rel=\"noopener noreferrer\">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href=\"https://hydra.family/head-protocol/unstable/use-cases/\" target=\"_blank\" rel=\"noopener noreferrer\">/unstable</a> branch)</li><li>Completed event sourced persistence <a href=\"https://github.com/input-output-hk/hydra/issues/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href=\"https://github.com/input-output-hk/hydra/issues/966\" target=\"_blank\" rel=\"noopener noreferrer\">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href=\"https://github.com/input-output-hk/hydra/pull/1006\" target=\"_blank\" rel=\"noopener noreferrer\">#1006</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-08-04-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In\nparticular, the main focus was directed towards solidifying transaction related types and\ntheir binary representation. We also directed some effort into unblocking Plutus team with\nrespect to PlutusV3 integration.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-progress\">Conway progress<a class=\"hash-link\" href=\"#conway-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3552\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3581\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3571\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3556\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3556</a> - Add Script to Constitution</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3576\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3495\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3579\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3585\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3587\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3586\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3588\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3588</a> - Rename key roles</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3557\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3595\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3600\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3597\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing\">Testing<a class=\"hash-link\" href=\"#testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3374\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3374</a> - New features for generation subject to constraints</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3519\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3519</a> - Basic Conway features test</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bugfixes\">Bugfixes<a class=\"hash-link\" href=\"#bugfixes\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3566\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"plutus-integration\">Plutus integration<a class=\"hash-link\" href=\"#plutus-integration\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3538\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3593\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improvements-and-releasing\">Improvements and releasing<a class=\"hash-link\" href=\"#improvements-and-releasing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3574\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3573\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3555\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3575\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3567\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3567</a> - Backport mint field translation bugfix</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3568\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3572\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3572</a> - Release/backport tickf bugfix</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-08-04-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview-of-sprint-41\">High-level overview of <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22\" target=\"_blank\" rel=\"noopener noreferrer\">sprint 41</a><a class=\"hash-link\" href=\"#high-level-overview-of-sprint-41\" title=\"Direct link to heading\">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed\nto provide a safety guarantee for nodes joining the network while still taking\nadvantage of the distributed network for nodes that are synced.  This will be\nan intermediate step before Genesis which will allow for further distribute the\nsystem.  The bootstrap peers will be run by some trusted partners like CF,\nEmurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node\nwallets), which often end up syncing and require access to the honest chain. See\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4615\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"other-contributions\">Other contributions<a class=\"hash-link\" href=\"#other-contributions\" title=\"Direct link to heading\">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated\nthunks which can lead to memory leaks <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4633\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4633</a>.  We found\na small one in the peer metric component of the P2P networking stack.  Fixing\nit put us on a small detour of fixing the API of the <a href=\"https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars\" target=\"_blank\" rel=\"noopener noreferrer\"><code>strict-checked-vars</code></a>\npackage: <a href=\"https://github.com/input-output-hk/cardano-base/pulls/431\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-base#431</a>, <a href=\"https://github.com/input-output-hk/cardano-base/pulls/432\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-base#432</a>, as well as adding <code>NFData</code>\ninstance to <a href=\"https://github.com/input-output-hk/io-sim/pull/110\" target=\"_blank\" rel=\"noopener noreferrer\"><code>io-classes</code></a>.  We also improved <code>nothunks</code>\nlibrary to make debugging easier and we provided a <code>NoThunks</code> instance for\n<code>ThreadId</code> which we will need in the future (see <a href=\"https://github.com/input-output-hk/nothunks/pull/33\" target=\"_blank\" rel=\"noopener noreferrer\">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related\npackages to <a href=\"https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0\" target=\"_blank\" rel=\"noopener noreferrer\">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big\nledger peers, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3886\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it's not possible to\nshutdown a node which was starting while trying to update network topology,\nsee <a href=\"https://github.com/input-output-hk/cardano-node/pull/5421\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#5421</a>.</p><p>I didn't mention that in the previous update, so here it goes: in the previous\nsprint we released <a href=\"https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md\" target=\"_blank\" rel=\"noopener noreferrer\"><code>ouroboros-network-0.8.2.0</code></a> and\n<a href=\"https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md\" target=\"_blank\" rel=\"noopener noreferrer\"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-network",
+            "title": "Network Team Update",
+            "summary": "High-level overview of sprint 41",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-08-04-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We're adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We've finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We've been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we've successfully performed various benchmarking runs on it.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking\ncluster automation. We've pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint\nwhen using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any\ninconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.\nThis feature adds another layer of robustness to the whole system.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler\nversions. We've future-proofed our benchmarking code.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend\naccordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we've observed with the\nnomad backend - which will be a big step towards production use.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-08-04-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href=\"https://github.com/input-output-hk/cardano-ops/pull/416\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-pull-416</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-perf\">Cardano-perf<a class=\"hash-link\" href=\"#cardano-perf\" title=\"Direct link to heading\">​</a></h3><ul><li>New repo: <a href=\"https://github.com/input-output-hk/cardano-perf\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-perf-repo</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href=\"https://github.com/input-output-hk/cardano-world/pull/104\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href=\"https://github.com/input-output-hk/cardano-world/pull/105\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href=\"https://github.com/input-output-hk/cardano-world/pull/106\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-106</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-04-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-04T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-08-01-node-cli-api",
+            "content_html": "<h1>2023-07-19 - 2023-08-01</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/116\" target=\"_blank\" rel=\"noopener noreferrer\">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/115\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/113\" target=\"_blank\" rel=\"noopener noreferrer\">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/111\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/110\" target=\"_blank\" rel=\"noopener noreferrer\">Add DRep registration certificate command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/109\" target=\"_blank\" rel=\"noopener noreferrer\">Add options to delegate voting stake </a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/107\" target=\"_blank\" rel=\"noopener noreferrer\">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/106\" target=\"_blank\" rel=\"noopener noreferrer\">Release cardano-cli 8.4.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/103\" target=\"_blank\" rel=\"noopener noreferrer\">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/100\" target=\"_blank\" rel=\"noopener noreferrer\">Change directory structure from Options/.. to EraBased/..</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/98\" target=\"_blank\" rel=\"noopener noreferrer\">Era-sensitive command structure</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/90\" target=\"_blank\" rel=\"noopener noreferrer\">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/155\" target=\"_blank\" rel=\"noopener noreferrer\">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/154\" target=\"_blank\" rel=\"noopener noreferrer\">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/152\" target=\"_blank\" rel=\"noopener noreferrer\">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/151\" target=\"_blank\" rel=\"noopener noreferrer\">Deprecate some constraint functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/150\" target=\"_blank\" rel=\"noopener noreferrer\">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/149\" target=\"_blank\" rel=\"noopener noreferrer\">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/148\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/147\" target=\"_blank\" rel=\"noopener noreferrer\">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/146\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/143\" target=\"_blank\" rel=\"noopener noreferrer\">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/142\" target=\"_blank\" rel=\"noopener noreferrer\">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/141\" target=\"_blank\" rel=\"noopener noreferrer\">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/138\" target=\"_blank\" rel=\"noopener noreferrer\">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/137\" target=\"_blank\" rel=\"noopener noreferrer\">Support more constraints for Conway witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/135\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/134\" target=\"_blank\" rel=\"noopener noreferrer\">Expose toShelleyPoolParams for conway integration</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/131\" target=\"_blank\" rel=\"noopener noreferrer\"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/130\" target=\"_blank\" rel=\"noopener noreferrer\">Expose more functionality from cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/128\" target=\"_blank\" rel=\"noopener noreferrer\">Improved feature ergonomics</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/127\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5412\" target=\"_blank\" rel=\"noopener noreferrer\">Fix stubbed LogFormatting instances</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5411\" target=\"_blank\" rel=\"noopener noreferrer\">8.2.0 version bumps</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5409\" target=\"_blank\" rel=\"noopener noreferrer\">Bump network packages version</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5404\" target=\"_blank\" rel=\"noopener noreferrer\">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5401\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5411\" target=\"_blank\" rel=\"noopener noreferrer\">8.2.0 version bumps</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5409\" target=\"_blank\" rel=\"noopener noreferrer\">Bump network packages version</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5404\" target=\"_blank\" rel=\"noopener noreferrer\">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5400\" target=\"_blank\" rel=\"noopener noreferrer\">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5409\" target=\"_blank\" rel=\"noopener noreferrer\">Bump network packages version</a><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42\" target=\"_blank\" rel=\"noopener noreferrer\">WarmValency</a></li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-08-01-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-08-01T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-07-31-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"network-update-sprints-39--40\">Network Update (Sprints 39 &amp; 40)<a class=\"hash-link\" href=\"#network-update-sprints-39--40\" title=\"Direct link to heading\">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.\nIt was great to see and talk to so many of the community members.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sprint-39-jun-26---jul-09\">Sprint 39 (Jun 26 - Jul 09)<a class=\"hash-link\" href=\"#sprint-39-jun-26---jul-09\" title=\"Direct link to heading\">​</a></h3><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"major-changes\">Major changes<a class=\"hash-link\" href=\"#major-changes\" title=\"Direct link to heading\">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-to-client-protocol\"><code>node-to-client</code> protocol<a class=\"hash-link\" href=\"#node-to-client-protocol\" title=\"Direct link to heading\">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-to-node-protocol\"><code>node-to-node</code> protocol<a class=\"hash-link\" href=\"#node-to-node-protocol\" title=\"Direct link to heading\">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href=\"https://github.com/input-output-hk/cardano-node/pull/5353\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.\nThe <code>cardano-client-0.2.0.0</code> was not affected.\nSee <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4612\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).\nDynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.\nSee <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3159\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4462\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4462</a>.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"minor-changes\">Minor changes<a class=\"hash-link\" href=\"#minor-changes\" title=\"Direct link to heading\">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5356\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#5356</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sprint-40-jul-09---jul-23\">Sprint 40 (Jul 09 - Jul 23)<a class=\"hash-link\" href=\"#sprint-40-jul-09---jul-23\" title=\"Direct link to heading\">​</a></h3><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"major-changes-1\">Major changes<a class=\"hash-link\" href=\"#major-changes-1\" title=\"Direct link to heading\">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).\nThis includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.\nThis feature is documented in the <a href=\"https://github.com/input-output-hk/cardano-node/pull/5399\" target=\"_blank\" rel=\"noopener noreferrer\">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre\" target=\"_blank\" rel=\"noopener noreferrer\">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.\nPeer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).\nSee <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4620\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4620</a>.\nThe improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.\nPreviously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.\nThe hot valency (previously known simply as valency) hasn't changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.\nWarm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.\nSee <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4575\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4575</a>, <a href=\"https://github.com/input-output-hk/cardano-node/pull/5409\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#5409</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-31-network",
+            "title": "Network Team Update",
+            "summary": "Network Update (Sprints 39 & 40)",
+            "date_modified": "2023-07-31T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-07-28-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.\nThey conducted the monthly review meeting for July, which continously ensures\ntransparent communication and project evaluation. The team migrated the core\nlogic of the node to an event-sourced architecture and incremental writes of\nevents to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.\nFurthermore, the team added the ability to read protocol parameters via the API\nand fixed the CI workflows to support pull requests from forks of external\ncontributors, streamlining the development process for community involvement.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Held the monthly review meeting for July (<a href=\"https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/\" target=\"_blank\" rel=\"noopener noreferrer\">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href=\"https://github.com/input-output-hk/hydra/pull/999\" target=\"_blank\" rel=\"noopener noreferrer\">#999</a></li><li>Updated persistence to faster incremental writes of events <a href=\"https://github.com/input-output-hk/hydra/pull/1000\" target=\"_blank\" rel=\"noopener noreferrer\">#1000</a></li><li>Added ability to read protocol parameters via API <a href=\"https://github.com/input-output-hk/hydra/issues/735\" target=\"_blank\" rel=\"noopener noreferrer\">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href=\"https://github.com/input-output-hk/hydra/pull/993\" target=\"_blank\" rel=\"noopener noreferrer\">#993</a></li><li>Updated to GHC 9.2.8 <a href=\"https://github.com/input-output-hk/hydra/pull/1005\" target=\"_blank\" rel=\"noopener noreferrer\">#1005</a></li><li>Prepared an updated use cases section on <a href=\"https://hydra.family\" target=\"_blank\" rel=\"noopener noreferrer\">https://hydra.family</a> (published with next release)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href=\"https://github.com/input-output-hk/hydra/issues/966\" target=\"_blank\" rel=\"noopener noreferrer\">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href=\"https://github.com/input-output-hk/hydra/issues/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-28-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-07-28T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-07-27-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team launched <strong>Mithril protocol’s mainnet beta</strong>: the <code>release-mainnet</code> network is now open for signer registrations, and its genesis certificate has been created. The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2329.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href=\"https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide\" target=\"_blank\" rel=\"noopener noreferrer\">onboarding SPOs</a> and setting up a <a href=\"https://mithril.network/doc/manual/getting-started/run-signer-node\" target=\"_blank\" rel=\"noopener noreferrer\">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Created the dev blog post <a href=\"https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch\" target=\"_blank\" rel=\"noopener noreferrer\">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2329.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a>:<ul><li>Completed the issue <code>Deploy 'mainnet' infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/988\" target=\"_blank\" rel=\"noopener noreferrer\">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href=\"https://github.com/input-output-hk/mithril/issues/989\" target=\"_blank\" rel=\"noopener noreferrer\">#989</a></li></ul></li><li>Worked on the epic <code>Release 'mainnet' Mithril network</code> <a href=\"https://github.com/input-output-hk/mithril/issues/918\" target=\"_blank\" rel=\"noopener noreferrer\">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1049\" target=\"_blank\" rel=\"noopener noreferrer\">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/904\" target=\"_blank\" rel=\"noopener noreferrer\">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/991\" target=\"_blank\" rel=\"noopener noreferrer\">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1080\" target=\"_blank\" rel=\"noopener noreferrer\">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1053\" target=\"_blank\" rel=\"noopener noreferrer\">#1053</a></li><li>Completed the issue <code>Add a 'sign' sub-command to 'genesis' command in aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1081\" target=\"_blank\" rel=\"noopener noreferrer\">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href=\"https://github.com/input-output-hk/mithril/issues/668\" target=\"_blank\" rel=\"noopener noreferrer\">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance 'Run a Mithril Signer node (SPO)' guide</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1055\" target=\"_blank\" rel=\"noopener noreferrer\">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1073\" target=\"_blank\" rel=\"noopener noreferrer\">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href=\"https://github.com/input-output-hk/mithril/issues/834\" target=\"_blank\" rel=\"noopener noreferrer\">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of 'ProtocolVerificationKey'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1083\" target=\"_blank\" rel=\"noopener noreferrer\">#1083</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-27-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-07-27T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-07-26-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.\nWe also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.\nCurrently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis-liaising\">Genesis liaising<a class=\"hash-link\" href=\"#genesis-liaising\" title=\"Direct link to heading\">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/222\" target=\"_blank\" rel=\"noopener noreferrer\">#222</a>.</li><li><a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/233\" target=\"_blank\" rel=\"noopener noreferrer\">#233</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-26-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-26T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-07-21-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team updated the specification to align with recent\noff-chain protocol changes, completed refactoring the snapshot emission\nin preparation for event-sourced protocol logic, and updated to GHC\n9.2.7, resulting in improved compile times and slightly smaller Plutus\nscripts.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol\nchanges to complete\n<a href=\"https://github.com/input-output-hk/hydra/pull/728\" target=\"_blank\" rel=\"noopener noreferrer\">#728</a></li><li>Refactored the snapshot emission logic in preparation for event\nsourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and\nslightly smaller plutus scripts.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence\n<a href=\"https://github.com/input-output-hk/hydra/pull/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a>.</li><li>Update the use cases section on <a href=\"https://hydra.family\" target=\"_blank\" rel=\"noopener noreferrer\">https://hydra.family</a></li><li>Remove deprecated internal commit\n<a href=\"https://github.com/input-output-hk/hydra/pull/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-21-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-07-21T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-07-21-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.\nAll members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.\nWe also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).\nAdditionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.\nWe also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-we-achieved\">What we achieved<a class=\"hash-link\" href=\"#what-we-achieved\" title=\"Direct link to heading\">​</a></h2><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3521\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3521</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3554\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3520\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3531\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3558\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3550\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3551\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3551</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3546\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3546</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3472\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3146\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3146</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3498\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2948\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2948</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3499\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-is-currently-in-progress\">What is currently in progress<a class=\"hash-link\" href=\"#what-is-currently-in-progress\" title=\"Direct link to heading\">​</a></h2><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3494\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3494</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3495\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3436\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3436</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3523\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3509\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3509</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3552\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3532\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3532</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3556\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3556</a>] Add script-support for the constitution</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3543\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3543</a>] [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3557\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3557</a>] Improve the 'new committee' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-21-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-21T00:00:00.000Z",
+            "author": {
+                "name": "Alexey Kuleshevich",
+                "url": "https://github.com/lehins"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-07-21-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5406\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-5406</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href=\"https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href=\"https://github.com/input-output-hk/cardano-world/pull/102\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href=\"https://github.com/input-output-hk/cardano-world/pull/103\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href=\"https://github.com/input-output-hk/cardano-world/pull/91\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-91</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iohk-nix\">Iohk-nix<a class=\"hash-link\" href=\"#iohk-nix\" title=\"Direct link to heading\">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/549\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/550\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-550</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-21-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-21T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-07-20-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is working on formalising mini protocols, the performance\nmodelling prototype and also finishing off their ICE papers.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the\nthorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of\nmini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete\nbackend based on piecewise-polynomials</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-20-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-07-20T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-07-18-node-cli-api",
+            "content_html": "<h1>2023-07-05 - 2023-07-18</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/74\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/72\" target=\"_blank\" rel=\"noopener noreferrer\">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/68\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/67\" target=\"_blank\" rel=\"noopener noreferrer\">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/66\" target=\"_blank\" rel=\"noopener noreferrer\">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/65\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/123\" target=\"_blank\" rel=\"noopener noreferrer\">Fix ghc version CPP</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/122\" target=\"_blank\" rel=\"noopener noreferrer\">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/119\" target=\"_blank\" rel=\"noopener noreferrer\">Incorporate remaining ledger certificates</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/117\" target=\"_blank\" rel=\"noopener noreferrer\">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/115\" target=\"_blank\" rel=\"noopener noreferrer\">Fix Eq, Show for Proposal type</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/112\" target=\"_blank\" rel=\"noopener noreferrer\">Wire up remaining governance actions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/108\" target=\"_blank\" rel=\"noopener noreferrer\">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/106\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unnecessary constraint</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/104\" target=\"_blank\" rel=\"noopener noreferrer\">Make it build with ghc-9.6</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/103\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/102\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/101\" target=\"_blank\" rel=\"noopener noreferrer\">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/99\" target=\"_blank\" rel=\"noopener noreferrer\">Update ledger and consensus</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/98\" target=\"_blank\" rel=\"noopener noreferrer\">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5391\" target=\"_blank\" rel=\"noopener noreferrer\">Fix Shutdown test for new exit codes</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5387\" target=\"_blank\" rel=\"noopener noreferrer\">Fix markdown links</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/69\" target=\"_blank\" rel=\"noopener noreferrer\">Apply <code>stylish-haskell</code> to project</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-18-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-18T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-07-14-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order\nto improve <code>hydra-node</code> performance. Because of this work the team noticed we\nneed to refactor the emit snapshot emission logic and update the spec in the\nlight of new changes. They also took the time to revisit their goals and product\nplans for the next quarter as well as doing some security fixes related to\nmultisignatures.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href=\"https://github.com/input-output-hk/hydra/pull/963\" target=\"_blank\" rel=\"noopener noreferrer\">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href=\"https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4\" target=\"_blank\" rel=\"noopener noreferrer\">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href=\"https://github.com/input-output-hk/hydra/pull/962\" target=\"_blank\" rel=\"noopener noreferrer\">#962</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implement Event sourced persistence <a href=\"https://github.com/input-output-hk/hydra/pull/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a>.</li><li>Remove deprecated internal commit <a href=\"https://github.com/input-output-hk/hydra/pull/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a> and close <a href=\"https://github.com/input-output-hk/hydra/pull/728\" target=\"_blank\" rel=\"noopener noreferrer\">#728</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-14-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-07-14T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-07-13-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team created a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2327.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2327.0</code></a> distribution. They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2327.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href=\"https://github.com/input-output-hk/mithril/issues/987\" target=\"_blank\" rel=\"noopener noreferrer\">#987</a></li><li>Worked on the issue <code>Deploy 'mainnet' infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/988\" target=\"_blank\" rel=\"noopener noreferrer\">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href=\"https://github.com/input-output-hk/mithril/issues/989\" target=\"_blank\" rel=\"noopener noreferrer\">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/904\" target=\"_blank\" rel=\"noopener noreferrer\">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/991\" target=\"_blank\" rel=\"noopener noreferrer\">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href=\"https://github.com/input-output-hk/mithril/issues/932\" target=\"_blank\" rel=\"noopener noreferrer\">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1037\" target=\"_blank\" rel=\"noopener noreferrer\">#1037</a></li><li>Completed the issue <code>Add 'created_at' in Mithril Stake Distribution messages</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1030\" target=\"_blank\" rel=\"noopener noreferrer\">#1030</a></li><li>Completed the issue <code>Add a 'run-only' option in end to end test</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1048\" target=\"_blank\" rel=\"noopener noreferrer\">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href=\"https://github.com/input-output-hk/mithril/issues/669\" target=\"_blank\" rel=\"noopener noreferrer\">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1058\" target=\"_blank\" rel=\"noopener noreferrer\">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href=\"https://github.com/input-output-hk/mithril/issues/874\" target=\"_blank\" rel=\"noopener noreferrer\">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1049\" target=\"_blank\" rel=\"noopener noreferrer\">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1040\" target=\"_blank\" rel=\"noopener noreferrer\">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1041\" target=\"_blank\" rel=\"noopener noreferrer\">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href=\"https://github.com/input-output-hk/mithril/issues/952\" target=\"_blank\" rel=\"noopener noreferrer\">#952</a></li><li>Completed the issue <code>'testing-preview' network does not create certificates</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1015\" target=\"_blank\" rel=\"noopener noreferrer\">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/837\" target=\"_blank\" rel=\"noopener noreferrer\">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1035\" target=\"_blank\" rel=\"noopener noreferrer\">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1023\" target=\"_blank\" rel=\"noopener noreferrer\">#1023</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-13-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-07-13T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-07-12-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4620\" target=\"_blank\" rel=\"noopener noreferrer\">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/200\" target=\"_blank\" rel=\"noopener noreferrer\">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-12-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-12T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-07-12-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-12-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-12T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-07-07-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes_agent\">kes_agent<a class=\"hash-link\" href=\"#kes_agent\" title=\"Direct link to heading\">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href=\"https://github.com/input-output-hk/kes-agent/issues/14\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4395\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href=\"https://github.com/input-output-hk/cardano-base/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href=\"https://github.com/input-output-hk/mithril/pull/939\" target=\"_blank\" rel=\"noopener noreferrer\">#939</a>.\nIncluded benchmarks and further tests.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cips-and-community\">CIPs and community<a class=\"hash-link\" href=\"#cips-and-community\" title=\"Direct link to heading\">​</a></h3><ul><li>Addressed some review comments in <a href=\"https://github.com/cardano-foundation/CIPs/pull/506\" target=\"_blank\" rel=\"noopener noreferrer\">#PR506</a></li><li>Worked with the communityt on <a href=\"https://github.com/cardano-foundation/CIPs/pull/524\" target=\"_blank\" rel=\"noopener noreferrer\">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-07-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-07T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-07-07-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers\nfor publication in EPTCS, formalising concensus, and investigating chain\nsync.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-07-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-07-07T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-07-07-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the\nnetwork layer further by implementing authentication of the messages between the\npeers in the Head protocol. In the process they also managed to separate\nHeartBeat messages from the protocol ones which somewhat improved the quality of\ncode in Hydra. The team also finished work related to sending only transaction\nids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark\npublishing on the website.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/hydra/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">Implemented</a> authenticated messages</li><li><a href=\"https://github.com/input-output-hk/hydra/issues/728\" target=\"_blank\" rel=\"noopener noreferrer\">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href=\"https://github.com/input-output-hk/hydra/pull/969\" target=\"_blank\" rel=\"noopener noreferrer\">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href=\"https://github.com/input-output-hk/hydra/pull/947\" target=\"_blank\" rel=\"noopener noreferrer\">benchmarks</a></li><li><a href=\"https://github.com/input-output-hk/hydra/pull/967\" target=\"_blank\" rel=\"noopener noreferrer\">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href=\"https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">off-chain signature\nverification</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href=\"https://github.com/input-output-hk/hydra/issues/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-07-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-07-07T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-07-07-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5360\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-5360</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ogmios\">Cardano-ogmios<a class=\"hash-link\" href=\"#cardano-ogmios\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href=\"https://github.com/input-output-hk/cardano-ogmios/pull/6\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ogmios-pull-6</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href=\"https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-rosetta\">Cardano-rosetta<a class=\"hash-link\" href=\"#cardano-rosetta\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href=\"https://github.com/cardano-foundation/cardano-rosetta/pull/532\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-rosetta-pull-532</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href=\"https://github.com/input-output-hk/cardano-world/pull/99\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href=\"https://github.com/input-output-hk/cardano-world/pull/100\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href=\"https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href=\"https://github.com/input-output-hk/cardano-world/pull/101\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-101</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"spongix\">Spongix<a class=\"hash-link\" href=\"#spongix\" title=\"Direct link to heading\">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href=\"https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911\" target=\"_blank\" rel=\"noopener noreferrer\">spongix-simple-branch</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-07-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-07T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-07-06-developer-experience",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"build-support--maintainance\">build support &amp; maintainance<a class=\"hash-link\" href=\"#build-support--maintainance\" title=\"Direct link to heading\">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"compiler-upgrades\">compiler upgrades<a class=\"hash-link\" href=\"#compiler-upgrades\" title=\"Direct link to heading\">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We've also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"hydra-tools\">Hydra Tools<a class=\"hash-link\" href=\"#hydra-tools\" title=\"Direct link to heading\">​</a></h3><p>Our repository, <a href=\"https://github.com/input-output-hk/hydra-tools\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"haskellnix\">haskell.nix<a class=\"hash-link\" href=\"#haskellnix\" title=\"Direct link to heading\">​</a></h3><p><a href=\"https://github.com/input-output-hk/haskell.nix\" target=\"_blank\" rel=\"noopener noreferrer\">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"devx\">devx<a class=\"hash-link\" href=\"#devx\" title=\"Direct link to heading\">​</a></h3><p>The <a href=\"https://github.com/input-output-hk/devx\" target=\"_blank\" rel=\"noopener noreferrer\">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href=\"https://github.com/input-output-hk/actions\" target=\"_blank\" rel=\"noopener noreferrer\">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"upstream-tooling\">upstream tooling<a class=\"hash-link\" href=\"#upstream-tooling\" title=\"Direct link to heading\">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-06-developer-experience",
+            "title": "Developer Experience Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-06T00:00:00.000Z",
+            "author": {
+                "name": "Moritz Angermann",
+                "url": "https://github.com/angerman"
+            },
+            "tags": [
+                "devx"
+            ]
+        },
+        {
+            "id": "2023-07-04-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1455\" target=\"_blank\" rel=\"noopener noreferrer\">#1455</a>.</li><li>This also fixes a bug\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1451\" target=\"_blank\" rel=\"noopener noreferrer\">#1451</a></li><li>Added new tests to the new tx_out options\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1429\" target=\"_blank\" rel=\"noopener noreferrer\">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency\nThis fixes many other issues and simplifies the logic in db-sync\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1447\" target=\"_blank\" rel=\"noopener noreferrer\">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1436\" target=\"_blank\" rel=\"noopener noreferrer\">#1436</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1442\" target=\"_blank\" rel=\"noopener noreferrer\">#1442</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1448\" target=\"_blank\" rel=\"noopener noreferrer\">#1448</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1452\" target=\"_blank\" rel=\"noopener noreferrer\">#1452</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-04-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-04T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-07-04-node-cli-api",
+            "content_html": "<h1>2023-06-21 - 2023-07-04</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance \"Update constitution\" governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/60\" target=\"_blank\" rel=\"noopener noreferrer\">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/44\" target=\"_blank\" rel=\"noopener noreferrer\">Release 8.2.1</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/39\" target=\"_blank\" rel=\"noopener noreferrer\">Use new function-based API instead of using query data types directly</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/94\" target=\"_blank\" rel=\"noopener noreferrer\">Release cardano-api 8.7</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/92\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/90\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/88\" target=\"_blank\" rel=\"noopener noreferrer\">Backport: Add era phantom type parameter to Certificate</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/86\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/85\" target=\"_blank\" rel=\"noopener noreferrer\">Voting procedure and proposal procedure updates</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/84\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/83\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/79\" target=\"_blank\" rel=\"noopener noreferrer\">Add contributing guide</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/77\" target=\"_blank\" rel=\"noopener noreferrer\">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/70\" target=\"_blank\" rel=\"noopener noreferrer\">Update CHaP index</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/41\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-1694 API - Part 1</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5356\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node top level error handler</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5353\" target=\"_blank\" rel=\"noopener noreferrer\">Turn on some traces by default</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5364\" target=\"_blank\" rel=\"noopener noreferrer\">Report payment address and UTxOs in testnets</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5362\" target=\"_blank\" rel=\"noopener noreferrer\">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/79\" target=\"_blank\" rel=\"noopener noreferrer\">Add contributing guide</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/33\" target=\"_blank\" rel=\"noopener noreferrer\">Release workflow description</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5353\" target=\"_blank\" rel=\"noopener noreferrer\">Turn on some traces by default</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/75\" target=\"_blank\" rel=\"noopener noreferrer\">Add PR changelog check</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/71\" target=\"_blank\" rel=\"noopener noreferrer\">Fix stylish haskell in github action workflow</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/62\" target=\"_blank\" rel=\"noopener noreferrer\">Enable CI on PRs from forks</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/53\" target=\"_blank\" rel=\"noopener noreferrer\">Remove merge_group trigger from changelog check CI</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/46\" target=\"_blank\" rel=\"noopener noreferrer\">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/41\" target=\"_blank\" rel=\"noopener noreferrer\">Fix stylish haskell in github action workflow</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/40\" target=\"_blank\" rel=\"noopener noreferrer\">Enable CI in PRs from forks</a></li><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/48\" target=\"_blank\" rel=\"noopener noreferrer\">Add contributing guide</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-07-04-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-07-04T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-06-30-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,\nimplemented the end-to-end functionality for external commits, and tested it on\nthe preview environment. They also listed Hydra as a tool on the Cardano\ndeveloper portal, providing more visibility for the project. The team clarified\nthe path forward for L2 protocol improvements and explored an alternative CI\napproach using cabal instead of nix. Additionally, they released version 0.11.0,\nmarking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Written and published the monthly report for <a href=\"https://hydra.family/head-protocol/monthly/2023-06\" target=\"_blank\" rel=\"noopener noreferrer\">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a></li><li>Listed Hydra as a tool on cardano <a href=\"https://developers.cardano.org/tools/\" target=\"_blank\" rel=\"noopener noreferrer\">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href=\"https://github.com/input-output-hk/hydra/issues/728\" target=\"_blank\" rel=\"noopener noreferrer\">#728</a></li><li>Established an alternative CI using more cabal tools <a href=\"https://github.com/input-output-hk/hydra/pull/923\" target=\"_blank\" rel=\"noopener noreferrer\">#923</a></li><li>Release version <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.10.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.11.0</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href=\"https://github.com/input-output-hk/hydra/issues/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a></li><li>Complete ReqSn only sends transaction ids <a href=\"https://github.com/input-output-hk/hydra/issues/728\" target=\"_blank\" rel=\"noopener noreferrer\">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-30-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-06-30T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-06-29-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano <code>mainnet</code> infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href=\"https://github.com/input-output-hk/mithril/issues/987\" target=\"_blank\" rel=\"noopener noreferrer\">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href=\"https://github.com/input-output-hk/mithril/issues/862\" target=\"_blank\" rel=\"noopener noreferrer\">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on 'mainnet' and 'preview'/'preprod'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/961\" target=\"_blank\" rel=\"noopener noreferrer\">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1018\" target=\"_blank\" rel=\"noopener noreferrer\">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1017\" target=\"_blank\" rel=\"noopener noreferrer\">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/904\" target=\"_blank\" rel=\"noopener noreferrer\">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/991\" target=\"_blank\" rel=\"noopener noreferrer\">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href=\"https://github.com/input-output-hk/mithril/issues/993\" target=\"_blank\" rel=\"noopener noreferrer\">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1006\" target=\"_blank\" rel=\"noopener noreferrer\">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href=\"https://github.com/input-output-hk/mithril/issues/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a></li><li>Worked on the issue <code>'testing-preview' network does not create certificates</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1015\" target=\"_blank\" rel=\"noopener noreferrer\">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href=\"https://github.com/input-output-hk/mithril/issues/946\" target=\"_blank\" rel=\"noopener noreferrer\">#946</a></li><li>Completed the issue <code>Add 'recompute-certificates-hash' command to aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1001\" target=\"_blank\" rel=\"noopener noreferrer\">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/984\" target=\"_blank\" rel=\"noopener noreferrer\">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href=\"https://github.com/input-output-hk/mithril/issues/944\" target=\"_blank\" rel=\"noopener noreferrer\">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href=\"https://github.com/input-output-hk/mithril/issues/978\" target=\"_blank\" rel=\"noopener noreferrer\">#978</a></li><li>Completed the issue <code>Clean 'pending_snapshot' directory of aggregator</code> <a href=\"https://github.com/input-output-hk/mithril/issues/983\" target=\"_blank\" rel=\"noopener noreferrer\">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1000\" target=\"_blank\" rel=\"noopener noreferrer\">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href=\"https://github.com/input-output-hk/mithril/issues/967\" target=\"_blank\" rel=\"noopener noreferrer\">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/982\" target=\"_blank\" rel=\"noopener noreferrer\">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/1010\" target=\"_blank\" rel=\"noopener noreferrer\">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href=\"https://github.com/input-output-hk/mithril/issues/669\" target=\"_blank\" rel=\"noopener noreferrer\">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.1'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/973\" target=\"_blank\" rel=\"noopener noreferrer\">#973</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-29-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-06-29T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-06-28-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722\" target=\"_blank\" rel=\"noopener noreferrer\">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/149\" target=\"_blank\" rel=\"noopener noreferrer\">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/87\" target=\"_blank\" rel=\"noopener noreferrer\">added</a> a new \"legacy\" cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don't involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-28-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-28T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-06-28-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We've looked into an issue where the tracing system's concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9's significantly different inlining behaviour may produce those effects. We're currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The tracing system's concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we've been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we're continuing the new backend's validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-28-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-28T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-06-23-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href=\"https://www.discotec.org/2023/ice\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-23-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-06-23T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-06-23-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review\nmeeting (monthly report and video recording available soon) and started\nexperimenting on preview network with the new commit from external wallet\nfeature.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href=\"https://github.com/input-output-hk/hydra/pull/887\" target=\"_blank\" rel=\"noopener noreferrer\">commit from external\nwallet</a></li><li>Published regular <a href=\"https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks\" target=\"_blank\" rel=\"noopener noreferrer\">benchmarks for\nHydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs\n<a href=\"https://github.com/input-output-hk/hydra/pull/903\" target=\"_blank\" rel=\"noopener noreferrer\">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full\ntransactions <a href=\"https://github.com/input-output-hk/hydra/pull/922\" target=\"_blank\" rel=\"noopener noreferrer\">#922</a> -&gt; this\nis now evolved into fully addressing <a href=\"https://github.com/input-output-hk/hydra/issues/728\" target=\"_blank\" rel=\"noopener noreferrer\">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet\n<a href=\"https://github.com/input-output-hk/hydra/pull/924\" target=\"_blank\" rel=\"noopener noreferrer\">#924</a></li><li>Add flag option to display node version on tui\n<a href=\"https://github.com/input-output-hk/hydra/pull/934\" target=\"_blank\" rel=\"noopener noreferrer\">#934</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href=\"https://github.com/input-output-hk/hydra/pull/903\" target=\"_blank\" rel=\"noopener noreferrer\">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href=\"https://github.com/input-output-hk/hydra/pull/913\" target=\"_blank\" rel=\"noopener noreferrer\">#913</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-23-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-06-23T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-06-23-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"network-update\">Network Update<a class=\"hash-link\" href=\"#network-update\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"key-contributions\">Key contributions<a class=\"hash-link\" href=\"#key-contributions\" title=\"Direct link to heading\">​</a></h3><p>We held a series of session to review the implementation of big ledger peers\n(eclipse evasion). See <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4462\" target=\"_blank\" rel=\"noopener noreferrer\">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec\nand protocol implementation.  We worked out a nice solution which takes\nadvantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we\nprovide <code>Any</code> type which gen generate almost any CBOR term (some are excluded\nonly because they are not decoded back to the same form, and we relay on that\nproperty).  See <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4580\" target=\"_blank\" rel=\"noopener noreferrer\">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has\na limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is\nignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that\nthe format of messages has changed, timestamps are printed in ISO8601 format.\nSee <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4601\" target=\"_blank\" rel=\"noopener noreferrer\">#4601</a>, <a href=\"https://github.com/input-output-hk/cardano-node/pull/5326\" target=\"_blank\" rel=\"noopener noreferrer\">#5326</a>, <a href=\"https://github.com/input-output-hk/cardano-node/pull/5313\" target=\"_blank\" rel=\"noopener noreferrer\">#5313</a>, <a href=\"https://github.com/input-output-hk/cardano-cli/pull/30\" target=\"_blank\" rel=\"noopener noreferrer\">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers\nwhen the chain is close to the tip, we continued to work on <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4530\" target=\"_blank\" rel=\"noopener noreferrer\">#4530</a>.  This is\ncurrently in review, the consensus team will need to provide us with the new\napi.  This feature is useful for two reasons: makes it easier to maintain\na topology file, it will also limit the traffic on public roots generated by\nfor example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design\n&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"other-smaller-changes\">Other smaller changes<a class=\"hash-link\" href=\"#other-smaller-changes\" title=\"Direct link to heading\">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger\npeers DNS names are resolved concurrently, and at most 2 local root peer DNS\nnames. See <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4596\" target=\"_blank\" rel=\"noopener noreferrer\">#4596</a>.</p><p>We fixed handshake query timeout in <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4603\" target=\"_blank\" rel=\"noopener noreferrer\">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the\nconsensus team, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4608\" target=\"_blank\" rel=\"noopener noreferrer\">#4608</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-23-network",
+            "title": "Network Team Update",
+            "summary": "Network Update",
+            "date_modified": "2023-06-23T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-06-23-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5318\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-5318</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href=\"https://github.com/input-output-hk/cardano-ops/pull/414\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href=\"https://github.com/input-output-hk/cardano-ops/tree/ops-local\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-ops-local</a>, <a href=\"https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Add Sanchonet environment: <a href=\"https://github.com/input-output-hk/cardano-world/pull/96\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-96</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci-ops\">Ci-ops<a class=\"hash-link\" href=\"#ci-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href=\"https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9\" target=\"_blank\" rel=\"noopener noreferrer\">ci-ops-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci-world\">Ci-world<a class=\"hash-link\" href=\"#ci-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href=\"https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250\" target=\"_blank\" rel=\"noopener noreferrer\">ci-world-compare</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"devx-ci\">Devx-ci<a class=\"hash-link\" href=\"#devx-ci\" title=\"Direct link to heading\">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href=\"https://github.com/input-output-hk/devx-ci\" target=\"_blank\" rel=\"noopener noreferrer\">devx-ci-repo</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iohk-nix\">Iohk-nix<a class=\"hash-link\" href=\"#iohk-nix\" title=\"Direct link to heading\">​</a></h3><ul><li>Add Sanchonet environment: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/545\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-545</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-23-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-23T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-06-16-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and\nexperiment operating a head on mainnet. They collected several bugs and issues\nand worked on fixing them. Now the team is soon to release a new version,\n0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href=\"https://github.com/input-output-hk/hydra/issues/927\" target=\"_blank\" rel=\"noopener noreferrer\">#927</a></li><li>Solved one user issue <a href=\"https://github.com/input-output-hk/hydra/issues/914\" target=\"_blank\" rel=\"noopener noreferrer\">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href=\"https://github.com/input-output-hk/hydra/pull/928\" target=\"_blank\" rel=\"noopener noreferrer\">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href=\"https://github.com/input-output-hk/hydra/pull/922\" target=\"_blank\" rel=\"noopener noreferrer\">#922</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href=\"https://github.com/input-output-hk/hydra/pull/903\" target=\"_blank\" rel=\"noopener noreferrer\">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-16-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-06-16T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-06-15-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href=\"https://github.com/input-output-hk/mithril/issues/780\" target=\"_blank\" rel=\"noopener noreferrer\">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for 'Mithril Stake Distribution' in client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/896\" target=\"_blank\" rel=\"noopener noreferrer\">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href=\"https://github.com/input-output-hk/mithril/issues/899\" target=\"_blank\" rel=\"noopener noreferrer\">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href=\"https://github.com/input-output-hk/mithril/issues/897\" target=\"_blank\" rel=\"noopener noreferrer\">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href=\"https://github.com/input-output-hk/mithril/issues/898\" target=\"_blank\" rel=\"noopener noreferrer\">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/960\" target=\"_blank\" rel=\"noopener noreferrer\">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/930\" target=\"_blank\" rel=\"noopener noreferrer\">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/880\" target=\"_blank\" rel=\"noopener noreferrer\">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the 'mainnet'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/962\" target=\"_blank\" rel=\"noopener noreferrer\">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href=\"https://github.com/input-output-hk/mithril/issues/862\" target=\"_blank\" rel=\"noopener noreferrer\">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on 'mainnet' and  'preview'/'preprod'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/961\" target=\"_blank\" rel=\"noopener noreferrer\">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href=\"https://github.com/input-output-hk/mithril/issues/953\" target=\"_blank\" rel=\"noopener noreferrer\">#953</a></li><li>Completed the issue <code>CI tests fail with Rust '1.70.0'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/958\" target=\"_blank\" rel=\"noopener noreferrer\">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href=\"https://github.com/input-output-hk/mithril/issues/954\" target=\"_blank\" rel=\"noopener noreferrer\">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href=\"https://github.com/input-output-hk/mithril/issues/946\" target=\"_blank\" rel=\"noopener noreferrer\">#946</a></li><li>Worked on the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href=\"https://github.com/input-output-hk/mithril/issues/967\" target=\"_blank\" rel=\"noopener noreferrer\">#967</a></li><li>Completed the issue <code>Fix 'Mithril Client multi-platform test' with new client interface</code> <a href=\"https://github.com/input-output-hk/mithril/issues/956\" target=\"_blank\" rel=\"noopener noreferrer\">#956</a></li><li>Completed the issue <code>Enhance 'ImmutableDigesterError::NotEnoughImmutable' error</code> <a href=\"https://github.com/input-output-hk/mithril/issues/969\" target=\"_blank\" rel=\"noopener noreferrer\">#969</a></li><li>Completed the issue <code>Client 'snapshot download' command fails with option '--download-dir'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/979\" target=\"_blank\" rel=\"noopener noreferrer\">#979</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-15-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-06-15T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-06-14-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.\nThere is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated \"Limit on Patience\" timeout sufficiently bounds how long the adversary can inflate a victim's overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.\nWe managed to run a node again with UTxO-HD enabled.\nWe also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-14-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-14T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-06-14-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We've performed the first full runs on the new backend.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we've measured\nperformance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts\ndone on several system components.  </p><p>In the meantime, we've finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for\nbenchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be\nmeaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific\ntrace messages are closely aligned. We've found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we've had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>As the new backend's healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we've performed our first 52-node cluster runs on nomad cloud. We're currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new\ninfrastructure to the existing ones, including determining reproducibility and variance.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-14-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-14T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-06-12-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"network-update\">Network Update<a class=\"hash-link\" href=\"#network-update\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"key-contributions-and-advances\">Key contributions and advances<a class=\"hash-link\" href=\"#key-contributions-and-advances\" title=\"Direct link to heading\">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers\ninto outbound governor known peers.  This is the primary way for new\nunregistered nodes to enter the network, which then can be shared using peer\nsharing.  Note that peer sharing is an experimental feature which is disabled\nuntil genesis &amp; eclipse evasion as fully implemented. See <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3596\" target=\"_blank\" rel=\"noopener noreferrer\">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3886\" target=\"_blank\" rel=\"noopener noreferrer\">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots\nwhere ignored until the first domain name was resolved, see <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4583\" target=\"_blank\" rel=\"noopener noreferrer\">#4583</a>.  The bug\nfix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3159\" target=\"_blank\" rel=\"noopener noreferrer\">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/140\" target=\"_blank\" rel=\"noopener noreferrer\">#140</a>.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-cardano-ping--cardano-cli-ping-release\">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class=\"hash-link\" href=\"#new-cardano-ping--cardano-cli-ping-release\" title=\"Direct link to heading\">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new\nquery feature (query supported versions). See <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4589\" target=\"_blank\" rel=\"noopener noreferrer\">#4589</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4593\" target=\"_blank\" rel=\"noopener noreferrer\">#4593</a> and <a href=\"https://github.com/input-output-hk/cardano-node/pull/5313\" target=\"_blank\" rel=\"noopener noreferrer\">#5313</a>.\nThe new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted\ntimestamps; also the formatting of ping results is slightly improved, and it\nwill introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site\nsupports the query parameter, the command will print:</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port network rtt: 0.064</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port network rtt: 0.045</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which\nallows us to detect whether the remote side is an <code>InitiatorOnly</code> or\n<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce\nitself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"other-smaller-contributions\">Other smaller contributions<a class=\"hash-link\" href=\"#other-smaller-contributions\" title=\"Direct link to heading\">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,\nwhich are now available <a href=\"https://input-output-hk.github.io/typed-protocols/\" target=\"_blank\" rel=\"noopener noreferrer\">here</a> (<a href=\"https://github.com/input-output-hk/typed-protocols/pull/40\" target=\"_blank\" rel=\"noopener noreferrer\">#40</a>, <a href=\"https://github.com/input-output-hk/typed-protocols/pull/41\" target=\"_blank\" rel=\"noopener noreferrer\">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in\npackage description file, <a href=\"https://github.com/input-output-hk/io-sim/pull/101\" target=\"_blank\" rel=\"noopener noreferrer\">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new\n<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.\nThe PR <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4395\" target=\"_blank\" rel=\"noopener noreferrer\">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4530\" target=\"_blank\" rel=\"noopener noreferrer\">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4580\" target=\"_blank\" rel=\"noopener noreferrer\">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-12-network",
+            "title": "Network Team Update",
+            "summary": "Network Update",
+            "date_modified": "2023-06-12T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-06-09-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4395)\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows' localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href=\"https://github.com/input-output-hk/cardano-base/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href=\"https://github.com/input-output-hk/cardano-base/pull/404\" target=\"_blank\" rel=\"noopener noreferrer\">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Implementation of Full Node Verifier <a href=\"https://github.com/input-output-hk/mithril/pull/939\" target=\"_blank\" rel=\"noopener noreferrer\">#939</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc\" target=\"_blank\" rel=\"noopener noreferrer\">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href=\"https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue\" target=\"_blank\" rel=\"noopener noreferrer\">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-09-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-09T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-06-09-developer-experience",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"build-support--maintainance\">build support &amp; maintainance<a class=\"hash-link\" href=\"#build-support--maintainance\" title=\"Direct link to heading\">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We've also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href=\"https://github.com/input-output-hk/cardano-base\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"compiler-upgrades\">compiler upgrades<a class=\"hash-link\" href=\"#compiler-upgrades\" title=\"Direct link to heading\">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we're prioritizing compaining even stronger for better backwards compatibility.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"chap-cardano-haskell-packages\">CHaP (cardano-haskell-packages)<a class=\"hash-link\" href=\"#chap-cardano-haskell-packages\" title=\"Direct link to heading\">​</a></h3><p>We relocated the underlying tooling, (<a href=\"https://github.com/input-output-hk/foliage\" target=\"_blank\" rel=\"noopener noreferrer\">foliage</a>), for <a href=\"https://github.com/input-output-hk/cardano-haskell-packages\" target=\"_blank\" rel=\"noopener noreferrer\">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/260\" target=\"_blank\" rel=\"noopener noreferrer\">improved tooling to quickly add constraints to packages</a>, <a href=\"https://github.com/input-output-hk/cardano-haskell-packages/issues/285\" target=\"_blank\" rel=\"noopener noreferrer\">better error reporting for add-revision</a> and <a href=\"https://github.com/input-output-hk/foliage/pull/63\" target=\"_blank\" rel=\"noopener noreferrer\">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"github-actions\">GitHub Actions<a class=\"hash-link\" href=\"#github-actions\" title=\"Direct link to heading\">​</a></h3><p>Our repository, <a href=\"https://github.com/input-output-hk/actions\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iohk-nix\">iohk-nix<a class=\"hash-link\" href=\"#iohk-nix\" title=\"Direct link to heading\">​</a></h3><p>The <a href=\"https://github.com/input-output-hk/iohk-nix\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"haskellnix\">haskell.nix<a class=\"hash-link\" href=\"#haskellnix\" title=\"Direct link to heading\">​</a></h3><p><a href=\"https://github.com/input-output-hk/haskell.nix\" target=\"_blank\" rel=\"noopener noreferrer\">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"devx\">devx<a class=\"hash-link\" href=\"#devx\" title=\"Direct link to heading\">​</a></h3><p>The relatively new <a href=\"https://github.com/input-output-hk/devx\" target=\"_blank\" rel=\"noopener noreferrer\">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository's readme has been updated to reflect its purpose and usage guidelines.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"upstream-tooling\">upstream tooling<a class=\"hash-link\" href=\"#upstream-tooling\" title=\"Direct link to heading\">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-09-developer-experience",
+            "title": "Developer Experience Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-09T00:00:00.000Z",
+            "author": {
+                "name": "Moritz Angermann",
+                "url": "https://github.com/angerman"
+            },
+            "tags": [
+                "devx"
+            ]
+        },
+        {
+            "id": "2023-06-09-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the\ninvestigation about the broken head on mainnet and re-opened their persistent\nhead instance. The team also fixed the monthly report publication on their\nwebsite and started sketching ideas and further improvements. Also, they are on\nthe last mile to deliver a new feature which will allow parties to commit funds\nfrom extern wallets. Finally the team started to work on optimizing the\nperformance on their benchmarks.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href=\"https://github.com/input-output-hk/hydra/issues/897\" target=\"_blank\" rel=\"noopener noreferrer\">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href=\"https://github.com/input-output-hk/hydra/pull/887\" target=\"_blank\" rel=\"noopener noreferrer\">#887</a></li><li>Fix monthly report publication on docs website and published the <a href=\"https://hydra.family/head-protocol/monthly/2023-05\" target=\"_blank\" rel=\"noopener noreferrer\">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href=\"https://github.com/input-output-hk/hydra/issues/908\" target=\"_blank\" rel=\"noopener noreferrer\">#908</a></li><li>Open issue to docusaurus <a href=\"https://github.com/facebook/docusaurus/issues/9036\" target=\"_blank\" rel=\"noopener noreferrer\">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href=\"https://github.com/input-output-hk/hydra/pull/910\" target=\"_blank\" rel=\"noopener noreferrer\">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a\nbottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide\nregular benchmarks for Hydra <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a></li><li>Add hydra as tool to developer platform <a href=\"https://github.com/input-output-hk/hydra/issues/872\" target=\"_blank\" rel=\"noopener noreferrer\">#872</a>.</li><li>Authenticate network messages <a href=\"https://github.com/input-output-hk/hydra/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href=\"https://github.com/input-output-hk/hydra/pull/903\" target=\"_blank\" rel=\"noopener noreferrer\">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-09-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-06-09T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-06-08-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that\nthe consensus team is working on\n<a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/88\" target=\"_blank\" rel=\"noopener noreferrer\">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1416\" target=\"_blank\" rel=\"noopener noreferrer\">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1429\" target=\"_blank\" rel=\"noopener noreferrer\">#1429</a><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1419\" target=\"_blank\" rel=\"noopener noreferrer\">#1419</a></li><li>Fixed issue with ada_pots being wrong\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href=\"https://github.com/input-output-hk/cardano-db-sync/releases\" target=\"_blank\" rel=\"noopener noreferrer\"><code>13.1.1.2</code></a>\nwhich is tested and ready to release. It contains many of the above.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-08-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-08T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-06-08-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on giving and preparing public\ntalks, also on preparing final versions of their ICE 2023 papers, and\non analysing chain selection.</p><p>This sprint the team has been working on final revisions for the\npre-proceedings versions of two ICE 2023 papers.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:\n<a href=\"https://www.lambdadays.org/lambdadays2023\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href=\"https://www.youtube.com/watch?v=h8sE3Ai8Dsk\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href=\"https://www.youtube.com/watch?v=h8sE3Ai8Dsk\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:\n<a href=\"https://www.discotec.org/2023/ice\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-08-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-06-08T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-06-08-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bitte\">Bitte<a class=\"hash-link\" href=\"#bitte\" title=\"Direct link to heading\">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href=\"https://github.com/input-output-hk/bitte/pull/194\" target=\"_blank\" rel=\"noopener noreferrer\">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href=\"https://github.com/input-output-hk/bitte/pull/201\" target=\"_blank\" rel=\"noopener noreferrer\">bitte-pull-201</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bitte-cells\">Bitte-cells<a class=\"hash-link\" href=\"#bitte-cells\" title=\"Direct link to heading\">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href=\"https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex\" target=\"_blank\" rel=\"noopener noreferrer\">bitte-cells-branch</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-graphql\">Cardano-graphql<a class=\"hash-link\" href=\"#cardano-graphql\" title=\"Direct link to heading\">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href=\"https://github.com/input-output-hk/cardano-graphql/pull/815\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-graphql-pull-815</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href=\"https://github.com/input-output-hk/cardano-node/pull/5241\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-5241</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ops\">Cardano-ops<a class=\"hash-link\" href=\"#cardano-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href=\"https://github.com/input-output-hk/cardano-ops/pull/411\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href=\"https://github.com/input-output-hk/cardano-ops/compare/master...ops-local\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ops-branch</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">Cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href=\"https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href=\"https://github.com/input-output-hk/cardano-world/pull/68\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href=\"https://github.com/input-output-hk/cardano-world/pull/69\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href=\"https://github.com/input-output-hk/cardano-world/pull/75\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href=\"https://github.com/input-output-hk/cardano-world/pull/77\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href=\"https://github.com/input-output-hk/cardano-world/pull/79\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href=\"https://github.com/input-output-hk/cardano-world/pull/84\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href=\"https://github.com/input-output-hk/cardano-world/pull/87\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href=\"https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href=\"https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href=\"https://github.com/input-output-hk/cardano-world/pull/92\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href=\"https://github.com/input-output-hk/cardano-world/pull/93\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-world-pr-93</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci-ops\">Ci-ops<a class=\"hash-link\" href=\"#ci-ops\" title=\"Direct link to heading\">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href=\"https://github.com/input-output-hk/ci-ops/pull/108\" target=\"_blank\" rel=\"noopener noreferrer\">ci-ops-pull-108</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci-world\">Ci-world<a class=\"hash-link\" href=\"#ci-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href=\"https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f\" target=\"_blank\" rel=\"noopener noreferrer\">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href=\"https://github.com/input-output-hk/ci-world/pull/22\" target=\"_blank\" rel=\"noopener noreferrer\">ci-world-pull-22</a></li><li>Migrate patroni HA db to it's own namespace in ci-world: <a href=\"https://github.com/input-output-hk/ci-world/pull/24\" target=\"_blank\" rel=\"noopener noreferrer\">ci-world-pull-24</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cicero\">Cicero<a class=\"hash-link\" href=\"#cicero\" title=\"Direct link to heading\">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href=\"https://github.com/input-output-hk/cicero/pull/79\" target=\"_blank\" rel=\"noopener noreferrer\">cicero-pull-79</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"iohk-nix\">Iohk-nix<a class=\"hash-link\" href=\"#iohk-nix\" title=\"Direct link to heading\">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/534\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href=\"https://github.com/input-output-hk/iohk-nix/pull/544\" target=\"_blank\" rel=\"noopener noreferrer\">iohk-nix-pull-544</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"openziti\">Openziti<a class=\"hash-link\" href=\"#openziti\" title=\"Direct link to heading\">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href=\"https://github.com/johnalotoski/openziti-bins/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">openziti-bins-pull-1</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-08-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-08T00:00:00.000Z",
+            "author": {
+                "name": "John Lotoski",
+                "url": "https://github.com/johnalotoski"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-06-08-system-test",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><p><a href=\"https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08\" target=\"_blank\" rel=\"noopener noreferrer\">Full list of closed PRs</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"framework-improvements\">Framework improvements:<a class=\"hash-link\" href=\"#framework-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"testing-improvements\">Testing improvements<a class=\"hash-link\" href=\"#testing-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node\">Node:<a class=\"hash-link\" href=\"#node\" title=\"Direct link to heading\">​</a></h3><ul><li>tested the <a href=\"https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html\" target=\"_blank\" rel=\"noopener noreferrer\">1.35.7</a> release</li><li>tested the <a href=\"https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html\" target=\"_blank\" rel=\"noopener noreferrer\">8.0.0</a> release</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"db-sync\">DB-Sync:<a class=\"hash-link\" href=\"#db-sync\" title=\"Direct link to heading\">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-08-system-test",
+            "title": "System Test Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-08T00:00:00.000Z",
+            "author": {
+                "name": "Martin Kourim",
+                "url": "https://github.com/mkoura"
+            },
+            "tags": [
+                "system-test"
+            ]
+        },
+        {
+            "id": "2023-06-07-node-cli-api",
+            "content_html": "<h1>2023-06-07 - 2023-06-20</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5328\" target=\"_blank\" rel=\"noopener noreferrer\">update network dependency and versions</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5326\" target=\"_blank\" rel=\"noopener noreferrer\">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5316\" target=\"_blank\" rel=\"noopener noreferrer\">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5315\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--conway-era</code> flag</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5313\" target=\"_blank\" rel=\"noopener noreferrer\">Updated cardano-cli ping command</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-node/pull/5311\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--conway-era</code> flag</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-cli/pull/30\" target=\"_blank\" rel=\"noopener noreferrer\">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-cli/pull/28\" target=\"_blank\" rel=\"noopener noreferrer\">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-cli/pull/25\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-cli/pull/24\" target=\"_blank\" rel=\"noopener noreferrer\">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href=\"https://github.com/input-output-hk/cardano-cli/pull/20\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/59\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/58\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>requireShelleyBasedEra</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/57\" target=\"_blank\" rel=\"noopener noreferrer\">New version cardano-api-8.5.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/56\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>queryEpoch</code> function</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/55\" target=\"_blank\" rel=\"noopener noreferrer\">New version 8.5.0.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/54\" target=\"_blank\" rel=\"noopener noreferrer\">Error on <code>hlint</code> warnings in CI</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/53\" target=\"_blank\" rel=\"noopener noreferrer\">Additional query expression functions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/52\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/49\" target=\"_blank\" rel=\"noopener noreferrer\">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/48\" target=\"_blank\" rel=\"noopener noreferrer\">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/47\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/46\" target=\"_blank\" rel=\"noopener noreferrer\">Revert to use <code>testProperty</code> now that it isn't deprecated anymore</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node 8.1.1 release</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5328\" target=\"_blank\" rel=\"noopener noreferrer\">update network dependency and versions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5340\" target=\"_blank\" rel=\"noopener noreferrer\">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5339\" target=\"_blank\" rel=\"noopener noreferrer\">Move golden files to proper location</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5336\" target=\"_blank\" rel=\"noopener noreferrer\">Conway testnet</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5335\" target=\"_blank\" rel=\"noopener noreferrer\">Don't retry testnet when failed</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5321\" target=\"_blank\" rel=\"noopener noreferrer\">Remove YAML filepath record from data Conf</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5315\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--conway-era</code> flag</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5311\" target=\"_blank\" rel=\"noopener noreferrer\">Add <code>--conway-era</code> flag</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5309\" target=\"_blank\" rel=\"noopener noreferrer\">Remove duplicate --testnet-magic flag</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5307\" target=\"_blank\" rel=\"noopener noreferrer\">Restructure cardano testnet </a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-cli/pull/18\" target=\"_blank\" rel=\"noopener noreferrer\">Fix Windows CI issues</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-07-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-06-07T00:00:00.000Z",
+            "author": {
+                "name": "Carlos LopezDeLara",
+                "url": "https://github.com/CarlosLopezDeLara"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-06-02-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many\ndifferent problems, such as our broken head on mainnet\n<a href=\"https://github.com/input-output-hk/hydra/issues/897\" target=\"_blank\" rel=\"noopener noreferrer\">#897</a>, our fragile monthly\nreport publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for\nexternal commits <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a>.\nAlthough most of these items are still open, huge progress has been made. To\naccelerate the investigation, they improved their logging to give more precise\nerrors when a transition requirement fails, and to reduce duplication on effets\nlogged content. Last but not least, the team is exploring formal methods and\nattended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href=\"https://github.com/input-output-hk/hydra/issues/897\" target=\"_blank\" rel=\"noopener noreferrer\">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href=\"https://github.com/input-output-hk/hydra/pull/895\" target=\"_blank\" rel=\"noopener noreferrer\">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href=\"https://github.com/input-output-hk/hydra/pull/896\" target=\"_blank\" rel=\"noopener noreferrer\">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href=\"https://github.com/input-output-hk/hydra/pull/893\" target=\"_blank\" rel=\"noopener noreferrer\">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a>.</li><li>Authenticate network messages <a href=\"https://github.com/input-output-hk/hydra/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">#727</a>.</li><li>Add hydra as tool to developr platform <a href=\"https://github.com/input-output-hk/hydra/issues/872\" target=\"_blank\" rel=\"noopener noreferrer\">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-02-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-06-02T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-06-01-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2321.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2321.1</code></a> distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2321.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href=\"https://github.com/input-output-hk/mithril/issues/780\" target=\"_blank\" rel=\"noopener noreferrer\">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href=\"https://github.com/input-output-hk/mithril/issues/925\" target=\"_blank\" rel=\"noopener noreferrer\">#925</a></li><li>Completed the issue <code>Create the sub-command for 'Cardano Immutable Files Full' in client</code> <a href=\"https://github.com/input-output-hk/mithril/issues/895\" target=\"_blank\" rel=\"noopener noreferrer\">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href=\"https://github.com/input-output-hk/mithril/issues/933\" target=\"_blank\" rel=\"noopener noreferrer\">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href=\"https://github.com/input-output-hk/mithril/issues/892\" target=\"_blank\" rel=\"noopener noreferrer\">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href=\"https://github.com/input-output-hk/mithril/issues/899\" target=\"_blank\" rel=\"noopener noreferrer\">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href=\"https://github.com/input-output-hk/mithril/issues/897\" target=\"_blank\" rel=\"noopener noreferrer\">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href=\"https://github.com/input-output-hk/mithril/issues/898\" target=\"_blank\" rel=\"noopener noreferrer\">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href=\"https://github.com/input-output-hk/mithril/issues/930\" target=\"_blank\" rel=\"noopener noreferrer\">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/880\" target=\"_blank\" rel=\"noopener noreferrer\">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.0.0'</code> <a href=\"https://github.com/input-output-hk/mithril/issues/920\" target=\"_blank\" rel=\"noopener noreferrer\">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href=\"https://github.com/input-output-hk/mithril/issues/512\" target=\"_blank\" rel=\"noopener noreferrer\">#512</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-06-01-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-06-01T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-05-31-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network's ledger-peer selection (see <a href=\"https://github.com/input-output-hk/ouroboros-consensus/issues/101\" target=\"_blank\" rel=\"noopener noreferrer\">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-31-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-31T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-05-31-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We've performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We've discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build\nconfiguration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive\nto benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile\nwe'd expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way\nshorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great\nsupport when evaluating different compiler versions or RTS flags incrementally.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various\nlogging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to\ndirectly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>We're currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with\njob definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing\nbenchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible\nand offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate\nvery specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-31-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-31T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-05-26-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on final revisions for the\npre-proceedings versions of two ICE 2023 papers.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-26-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-05-26T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-05-26-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their\nmonthly review meeting and drafted the report for May. They made progress on\nimplementing the first end-to-end journey for external commits using \"Option A\"\nfor normal UTxOs, while still considering \"Option B\". The team also integrated a\nSpanish translation contributed by the community, created micro-benchmarks for\ntransaction validation and deserialization, and made improvements to\nhydra-node's version reporting. Last but not least, they implemented the ability\nto commit multiple UTxOs to a head at once.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Held the monthly review meeting (<a href=\"https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view\" target=\"_blank\" rel=\"noopener noreferrer\">recording</a> + <a href=\"https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA\" target=\"_blank\" rel=\"noopener noreferrer\">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->\nfor normal UTxOs <a href=\"https://github.com/input-output-hk/hydra/pull/887\" target=\"_blank\" rel=\"noopener noreferrer\">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href=\"https://github.com/input-output-hk/hydra/pull/866\" target=\"_blank\" rel=\"noopener noreferrer\">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href=\"https://github.com/input-output-hk/hydra/pull/884\" target=\"_blank\" rel=\"noopener noreferrer\">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href=\"https://github.com/input-output-hk/hydra/issues/849\" target=\"_blank\" rel=\"noopener noreferrer\">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href=\"https://github.com/input-output-hk/hydra/pull/774\" target=\"_blank\" rel=\"noopener noreferrer\">#774</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a>.</li><li>Complete external commits with script UTxOs <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a>.</li><li>Authenticate network messages <a href=\"https://github.com/input-output-hk/hydra/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">#727</a>.</li><li>Add hydra as tool to developr platform <a href=\"https://github.com/input-output-hk/hydra/issues/872\" target=\"_blank\" rel=\"noopener noreferrer\">#872</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-26-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-05-26T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-05-26-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation\nof the new certificates is near complete, we refactored some of our data structures\nto be able to support DReps, we cleaned up the serialization format, and renamed things to make\nclearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.\nAnd, as always, we continue to address technical debt.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-progress\">Conway progress<a class=\"hash-link\" href=\"#conway-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3408\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3408</a> - Improve conway delegation certificates</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3428\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3426\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3425\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3425</a> - Improve witness logic needed for conway</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3423\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3421\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3454\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improve-testing\">Improve testing<a class=\"hash-link\" href=\"#improve-testing\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3403\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"integration-work\">Integration work<a class=\"hash-link\" href=\"#integration-work\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3410\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3410</a> - Update chaps index</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3416\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3414\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3420\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3441\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3409\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3407\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3407</a> -  Fixup release process documentation</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3404\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3402\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3424\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3432\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3440\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-26-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-26T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-05-26-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug\nwhen using DNS names in local root peers.  We continued working on engineering\nblog post about P2P. We released a new version of packages for\n<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks\nif <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-summary\">Detailed summary<a class=\"hash-link\" href=\"#detailed-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Eclipse evasion: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4462\" target=\"_blank\" rel=\"noopener noreferrer\">#4462</a></li><li>Local root peers bug fix: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4559\" target=\"_blank\" rel=\"noopener noreferrer\">#4559</a></li><li>Release to CHaP: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4573\" target=\"_blank\" rel=\"noopener noreferrer\">#4573</a></li><li>CI improvements: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4572\" target=\"_blank\" rel=\"noopener noreferrer\">#4572</a></li><li>Release script improvements: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4573\" target=\"_blank\" rel=\"noopener noreferrer\">#4573</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-26-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-26T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-05-24-node-cli-api",
+            "content_html": "<h1>2023-05-24 - 2023-06-06</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href=\"https://github.com/input-output-hk/fusion-flamingo\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5290\" target=\"_blank\" rel=\"noopener noreferrer\">Update <code>cardano-cli</code> changelog</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5197\" target=\"_blank\" rel=\"noopener noreferrer\">Propagate protocol parameters conversion errors</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5149\" target=\"_blank\" rel=\"noopener noreferrer\">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/31\" target=\"_blank\" rel=\"noopener noreferrer\">Switch to <code>tasty-discover</code></a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/30\" target=\"_blank\" rel=\"noopener noreferrer\">Move tests to standard locations</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/26\" target=\"_blank\" rel=\"noopener noreferrer\">Make cardano-api:internal component public</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/24\" target=\"_blank\" rel=\"noopener noreferrer\">update chaps index</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/18\" target=\"_blank\" rel=\"noopener noreferrer\">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/17\" target=\"_blank\" rel=\"noopener noreferrer\">Expose toAlonzoCostModels</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/9\" target=\"_blank\" rel=\"noopener noreferrer\">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/32\" target=\"_blank\" rel=\"noopener noreferrer\">Check changelog in tag script</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/34\" target=\"_blank\" rel=\"noopener noreferrer\">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-api/pull/38\" target=\"_blank\" rel=\"noopener noreferrer\">Use .x suffix for release branches</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5291\" target=\"_blank\" rel=\"noopener noreferrer\">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5284\" target=\"_blank\" rel=\"noopener noreferrer\">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5243\" target=\"_blank\" rel=\"noopener noreferrer\">update chaps &amp; integration</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5240\" target=\"_blank\" rel=\"noopener noreferrer\">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-24-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-24T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-05-19-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the \"Coding Standards\" for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete validation of timed transactions feature <a href=\"https://github.com/input-output-hk/hydra/issues/196\" target=\"_blank\" rel=\"noopener noreferrer\">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href=\"https://github.com/input-output-hk/hydra/issues/569\" target=\"_blank\" rel=\"noopener noreferrer\">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href=\"https://github.com/input-output-hk/hydra/pull/863\" target=\"_blank\" rel=\"noopener noreferrer\">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href=\"https://github.com/input-output-hk/hydra/pull/877\" target=\"_blank\" rel=\"noopener noreferrer\">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href=\"https://github.com/input-output-hk/hydra/pull/867\" target=\"_blank\" rel=\"noopener noreferrer\">#867</a>.</li><li>Updated our <a href=\"https://github.com/input-output-hk/hydra/wiki/Coding-Standards\" target=\"_blank\" rel=\"noopener noreferrer\">Coding Standards</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing \"Option A\" <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a>.</li><li>Integrate spanish translation <a href=\"https://github.com/input-output-hk/hydra/pull/866\" target=\"_blank\" rel=\"noopener noreferrer\">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href=\"https://github.com/input-output-hk/hydra/pull/774\" target=\"_blank\" rel=\"noopener noreferrer\">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href=\"https://github.com/input-output-hk/hydra/issues/696\" target=\"_blank\" rel=\"noopener noreferrer\">#696</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-19-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-05-19T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-05-17-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/68\" target=\"_blank\" rel=\"noopener noreferrer\">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/70\" target=\"_blank\" rel=\"noopener noreferrer\"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/89\" target=\"_blank\" rel=\"noopener noreferrer\">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it's similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we've re-introduced the Genesis State Machine.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-17-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-17T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-05-17-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2318.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href=\"https://github.com/input-output-hk/mithril/issues/780\" target=\"_blank\" rel=\"noopener noreferrer\">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href=\"https://github.com/input-output-hk/mithril/issues/907\" target=\"_blank\" rel=\"noopener noreferrer\">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href=\"https://github.com/input-output-hk/mithril/issues/854\" target=\"_blank\" rel=\"noopener noreferrer\">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href=\"https://github.com/input-output-hk/mithril/issues/869\" target=\"_blank\" rel=\"noopener noreferrer\">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href=\"https://github.com/input-output-hk/mithril/issues/888\" target=\"_blank\" rel=\"noopener noreferrer\">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href=\"https://github.com/input-output-hk/mithril/issues/893\" target=\"_blank\" rel=\"noopener noreferrer\">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/927\" target=\"_blank\" rel=\"noopener noreferrer\">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href=\"https://github.com/input-output-hk/mithril/issues/880\" target=\"_blank\" rel=\"noopener noreferrer\">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href=\"https://github.com/input-output-hk/mithril/issues/919\" target=\"_blank\" rel=\"noopener noreferrer\">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href=\"https://github.com/input-output-hk/mithril/issues/920\" target=\"_blank\" rel=\"noopener noreferrer\">#920</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-17-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-05-17T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-05-17-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Benchmarking: We're preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we're porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we're busy with the handover.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking\">Benchmarking<a class=\"hash-link\" href=\"#benchmarking\" title=\"Direct link to heading\">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>'s default build environment is around the corner, we're setting up our benchmarking cluster to\nhandle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This\nalso involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we've been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,\nwe strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to\nbe balanced against resource demand for all our cluster's nodes.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h3><p>For our new tracing system, we're currently validating the behaviour of the system after optimizations have been applied. Furthermore, some\nquality-of-life details that have changed required us to revision the system documentation.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"analysis\">Analysis<a class=\"hash-link\" href=\"#analysis\" title=\"Direct link to heading\">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been\nnormally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a\nhuge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-sourcing\">Open Sourcing<a class=\"hash-link\" href=\"#open-sourcing\" title=\"Direct link to heading\">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking\ncopmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we've been adjusting\nthose profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality\nof the nomad cloud backend.  </p><p>Additionally, we're porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance--tracing-meetup\">Performance &amp; Tracing Meetup<a class=\"hash-link\" href=\"#performance--tracing-meetup\" title=\"Direct link to heading\">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive\ndays together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.\nAlso, it was a great opportunity to finally meet in person.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"offboarding\">Offboarding<a class=\"hash-link\" href=\"#offboarding\" title=\"Direct link to heading\">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he's handing over all his obligations, which requires reorganisation\nof team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-17-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-17T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-05-12-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream's macros to merge these curves in halo2curves.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4395)\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href=\"https://github.com/input-output-hk/cardano-base/pull/408\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href=\"https://github.com/input-output-hk/cardano-base/pull/389\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href=\"https://github.com/input-output-hk/cardano-base/pull/404\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href=\"https://github.com/input-output-hk/cardano-base/pull/405\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href=\"https://github.com/input-output-hk/cardano-base/pull/411\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href=\"https://github.com/input-output-hk/cardano-base/pull/411\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href=\"https://github.com/cardano-foundation/CIPs/pull/506\" target=\"_blank\" rel=\"noopener noreferrer\">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href=\"https://github.com/privacy-scaling-explorations/halo2curves/pull/38\" target=\"_blank\" rel=\"noopener noreferrer\">#38</a></li><li>Addition constraint over JubJub merged <a href=\"https://github.com/input-output-hk/sidechains-zk/pull/10\" target=\"_blank\" rel=\"noopener noreferrer\">#10</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-12-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-12T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-05-12-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023\n(<a href=\"https://www.discotec.org/2023/ice\" target=\"_blank\" rel=\"noopener noreferrer\">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon\non 19th June 2023. The papers will be published in EPTCS.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-12-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-05-12T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-05-12-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release\nof the first mainnet compatible version. Besides this they also addressed\ninconsistencies in rollback handling, added an architecture page to the website,\nreducing the size of logs using event IDs. They also had productive discussions\nwith researchers on plans for incremental commits/decommits and had a whiteboard\nsession on DeFi and lending protocols. The goals for next week include\ncompleting the validation of the timed transactions feature, exploring stateless\nobservation, refining the Hydra explorer ticket, writing ops instructions and\ntroubleshooting, and implementing the first end-to-end journey for external\ncommits.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Released first mainnnet compatible version <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.10.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Added <a href=\"https://hydra.family/head-protocol/core-concepts/architecture/\" target=\"_blank\" rel=\"noopener noreferrer\">architecture page</a> and fixed haddock links on our website <a href=\"https://github.com/input-output-hk/hydra/pull/838\" target=\"_blank\" rel=\"noopener noreferrer\">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href=\"https://github.com/input-output-hk/hydra/pull/859\" target=\"_blank\" rel=\"noopener noreferrer\">#859</a></li><li>Published the <a href=\"https://hydra.family/head-protocol/monthly/2023-04\" target=\"_blank\" rel=\"noopener noreferrer\">monthly report for April</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete validation of timed transactions feature <a href=\"https://github.com/input-output-hk/hydra/issues/196\" target=\"_blank\" rel=\"noopener noreferrer\">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href=\"https://github.com/input-output-hk/hydra/issues/696\" target=\"_blank\" rel=\"noopener noreferrer\">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href=\"https://github.com/input-output-hk/hydra/issues/569\" target=\"_blank\" rel=\"noopener noreferrer\">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href=\"https://github.com/input-output-hk/hydra/issues/215\" target=\"_blank\" rel=\"noopener noreferrer\">#215</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-12-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-05-12T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-05-12-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see\nbelow).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to\nHandshake contributed by Galois Inc.  We made improvements to our tests (fixed\na flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and\n<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of\nreleasing new package version to <code>CHaP</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-summary\">Detailed summary<a class=\"hash-link\" href=\"#detailed-summary\" title=\"Direct link to heading\">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers\n(currently operated by IOG, in future also CF and Emurgo).  We designed\na switch to use ledger peers if the node tip is close enough to the current\ntime.  For more details see <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4530\" target=\"_blank\" rel=\"noopener noreferrer\">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query\nserver's <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to\nGalois Inc. for implementing it, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4256\" target=\"_blank\" rel=\"noopener noreferrer\">#4256</a> and <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4538\" target=\"_blank\" rel=\"noopener noreferrer\">#4538</a>.  We published new version\nof packages to CHaP <a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/253\" target=\"_blank\" rel=\"noopener noreferrer\">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will\nnot duplicate diffusion errors messages in the log, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4537\" target=\"_blank\" rel=\"noopener noreferrer\">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4515\" target=\"_blank\" rel=\"noopener noreferrer\">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4540\" target=\"_blank\" rel=\"noopener noreferrer\">#4540</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4544\" target=\"_blank\" rel=\"noopener noreferrer\">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we\nreleased all the package necessary to build the newest set of packages,\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4542\" target=\"_blank\" rel=\"noopener noreferrer\">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn't log\n<code>ExitSuccess</code> exceptions, <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pulls/71\" target=\"_blank\" rel=\"noopener noreferrer\">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4395\" target=\"_blank\" rel=\"noopener noreferrer\">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4539\" target=\"_blank\" rel=\"noopener noreferrer\">#4539</a>: we don't need to install cryptographic libraries in CI;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4545\" target=\"_blank\" rel=\"noopener noreferrer\">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved\nto a new repo;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4546\" target=\"_blank\" rel=\"noopener noreferrer\">#4546</a>: we switched to use <a href=\"https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue\" target=\"_blank\" rel=\"noopener noreferrer\">GitHub merge queues</a>;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4549\" target=\"_blank\" rel=\"noopener noreferrer\">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4553\" target=\"_blank\" rel=\"noopener noreferrer\">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-12-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-12T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-05-05-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.\nFor conway, we completed a large structural change that now allows\nfor delegation certificates to be parameterized by era, and introducing\nnew certificates for the first time since Shelley.\nWe also continue to build out our contraint based generators that we will\nuse to property test the conway era.\nIn particular, we can now generate an entire ledger state and a\ntransaction which is balanced with respect to the ledger state.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-certificates\">Conway certificates<a class=\"hash-link\" href=\"#conway-certificates\" title=\"Direct link to heading\">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.\nMoreover, there are new certificates in the Conway era to support CIP-1694,\nand MIR certificates have been removed.</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3387\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3387</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"constraint-based-testing\">Constraint based testing<a class=\"hash-link\" href=\"#constraint-based-testing\" title=\"Direct link to heading\">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,\nbut instead generate ledger states and transactions based on constraints.\nWe hit a milestone this week, namely the ability to generate a balanced transaction in the context\nof a ledger state, all based on our ever growing constaint language.</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3374\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3374</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3386\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3386</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"integration-work\">Integration work<a class=\"hash-link\" href=\"#integration-work\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3393\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3393</a> - Performance improvements</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3395\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3395</a> - Conway instances</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3398\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3389\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3389</a> - Reduce github pages size</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3390\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3390</a> - Reinstate the tickf optimizations</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-05-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-05T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-05-05-node-cli-api",
+            "content_html": "<h1>2023-05-05 - 2023-05-23</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5181\" target=\"_blank\" rel=\"noopener noreferrer\">Update libsodium installation instructions</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5264\" target=\"_blank\" rel=\"noopener noreferrer\">Delete deprecated <code>shelley</code> command group</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5206\" target=\"_blank\" rel=\"noopener noreferrer\">Add golden tests for CLI help</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5201\" target=\"_blank\" rel=\"noopener noreferrer\">Avoid bare IO in tests</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5200\" target=\"_blank\" rel=\"noopener noreferrer\">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5198\" target=\"_blank\" rel=\"noopener noreferrer\">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5189\" target=\"_blank\" rel=\"noopener noreferrer\">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5184\" target=\"_blank\" rel=\"noopener noreferrer\">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5120\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify socket path code</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5221\" target=\"_blank\" rel=\"noopener noreferrer\">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5218\" target=\"_blank\" rel=\"noopener noreferrer\">Implement deposit handling when balancing transactions</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5217\" target=\"_blank\" rel=\"noopener noreferrer\">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5215\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup socket file path code</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5207\" target=\"_blank\" rel=\"noopener noreferrer\">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5194\" target=\"_blank\" rel=\"noopener noreferrer\">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5191\" target=\"_blank\" rel=\"noopener noreferrer\">Expose config reader</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5188\" target=\"_blank\" rel=\"noopener noreferrer\">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5175\" target=\"_blank\" rel=\"noopener noreferrer\">Fix <code>toEraInMode</code> for conway</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5168\" target=\"_blank\" rel=\"noopener noreferrer\">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5096\" target=\"_blank\" rel=\"noopener noreferrer\">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5047\" target=\"_blank\" rel=\"noopener noreferrer\">Use cardano-api from separate repository</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4684\" target=\"_blank\" rel=\"noopener noreferrer\">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5022\" target=\"_blank\" rel=\"noopener noreferrer\">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5254\" target=\"_blank\" rel=\"noopener noreferrer\">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5242\" target=\"_blank\" rel=\"noopener noreferrer\">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5234\" target=\"_blank\" rel=\"noopener noreferrer\">Fix cardano-testnet help</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5211\" target=\"_blank\" rel=\"noopener noreferrer\">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5165\" target=\"_blank\" rel=\"noopener noreferrer\">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5128\" target=\"_blank\" rel=\"noopener noreferrer\">Create defaultYamlValue for cardano-testnet</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-05-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-05T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-05-04-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href=\"https://github.com/input-output-hk/mithril/issues/780\" target=\"_blank\" rel=\"noopener noreferrer\">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/850\" target=\"_blank\" rel=\"noopener noreferrer\">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href=\"https://github.com/input-output-hk/mithril/issues/851\" target=\"_blank\" rel=\"noopener noreferrer\">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href=\"https://github.com/input-output-hk/mithril/issues/870\" target=\"_blank\" rel=\"noopener noreferrer\">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href=\"https://github.com/input-output-hk/mithril/issues/852\" target=\"_blank\" rel=\"noopener noreferrer\">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href=\"https://github.com/input-output-hk/mithril/issues/871\" target=\"_blank\" rel=\"noopener noreferrer\">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href=\"https://github.com/input-output-hk/mithril/issues/853\" target=\"_blank\" rel=\"noopener noreferrer\">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href=\"https://github.com/input-output-hk/mithril/issues/854\" target=\"_blank\" rel=\"noopener noreferrer\">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href=\"https://github.com/input-output-hk/mithril/issues/868\" target=\"_blank\" rel=\"noopener noreferrer\">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href=\"https://github.com/input-output-hk/mithril/issues/878\" target=\"_blank\" rel=\"noopener noreferrer\">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/398\" target=\"_blank\" rel=\"noopener noreferrer\">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href=\"https://github.com/input-output-hk/mithril/issues/643\" target=\"_blank\" rel=\"noopener noreferrer\">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href=\"https://github.com/input-output-hk/mithril/issues/881\" target=\"_blank\" rel=\"noopener noreferrer\">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href=\"https://github.com/input-output-hk/mithril/issues/873\" target=\"_blank\" rel=\"noopener noreferrer\">#873</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-04-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-05-04T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-05-03-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.\nIt seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this\nneeds to be confirmed. We started a DoS mitigation handbook and updated our\nconceptual component diagram to guide the Genesis design. We engaged with the\nIOG researchers to work on the Limit on Patience attack vector, work in this\narea is still ongoing. We sketched a design to decouple the CPU load of the node\nfrom its responsiveness to the socket. Finally, we discussed with Networking our\napproach to lower the performance impact of the BlockFetch decision logic, and\ngot green light from them.</p><p>We migrated the consensus code to a <a href=\"https://github.com/input-output-hk/ouroboros-consensus\" target=\"_blank\" rel=\"noopener noreferrer\">new\nrepository</a>, splitting\nit from the <code>ouroboros-network</code> repository, and released version 0.6 of\nConsensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an\nexplanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code\ncomments that emphasize certain properties of the decisions the <code>BlockFetch</code>\nlogic makes that are helping us confirm that Genesis does not require any\nchanges to <code>BlockFetch</code>. We are waiting on input from our former system\narchitect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>\nrepository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a\nway to address the concern that the Limit on Patiente (LoP) attack vector duty\ncycle is indeed low, but it's still non-trivial to ultimately conclude it's\nsufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its\nresponsiveness to the socket, since the LoP is a relatively tight timeout, and\nnode performance bugs inducing seconds-worth of latency are unfortunately\nfamiliar phenomena.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h2><p>We <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/62\" target=\"_blank\" rel=\"noopener noreferrer\">added an\nexplanation</a> of\na question that we had to explain many times about the exact behavior of the\nhardfork combinator forecast horizon.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-03-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-03T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-05-03-performance-and-tracing",
+            "content_html": "<ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,\nwe created yet another local reproduction with the workbench's <code>forge-stress</code> benchmark.  </p><p>Currently we're working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and\nsubsequent releases.  </p><p>Additionally, we've refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally\nintended to run on a performance-critical codepath. We've worked on improving those, as well as eliminating cases of redundant\nconversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"dataflow-documentation\">Dataflow documentation<a class=\"hash-link\" href=\"#dataflow-documentation\" title=\"Direct link to heading\">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate\nfurther development, we're creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"remove-redundant-plutus-flake-input\">Remove redundant Plutus flake input<a class=\"hash-link\" href=\"#remove-redundant-plutus-flake-input\" title=\"Direct link to heading\">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,\nwe simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.\nThis capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along\nwith various quality-of-life improvements, has been merged to <code>master</code>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-03-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* Benchmarking: The benchmarks and performance investigations for the new 8.0 release branch are ongoing.",
+            "date_modified": "2023-05-03T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-05-01-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1389\" target=\"_blank\" rel=\"noopener noreferrer\">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1382\" target=\"_blank\" rel=\"noopener noreferrer\">#1382</a></li><li>Using the cache in more places to reduce recourses usage\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1380\" target=\"_blank\" rel=\"noopener noreferrer\">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1396\" target=\"_blank\" rel=\"noopener noreferrer\">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1398\" target=\"_blank\" rel=\"noopener noreferrer\">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-05-01-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-05-01T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-04-28-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto's library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-base/pull/255\" target=\"_blank\" rel=\"noopener noreferrer\">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href=\"https://github.com/input-output-hk/cardano-base/pull/384\" target=\"_blank\" rel=\"noopener noreferrer\">#384</a></li><li>Open PR for including test vectors created with <a href=\"https://github.com/zkcrypto/bls12_381\" target=\"_blank\" rel=\"noopener noreferrer\">zkscrypto</a>'s library, <a href=\"https://github.com/input-output-hk/cardano-base/pull/397\" target=\"_blank\" rel=\"noopener noreferrer\">PR#397</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href=\"https://github.com/input-output-hk/cardano-base/pull/389\" target=\"_blank\" rel=\"noopener noreferrer\">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href=\"https://github.com/input-output-hk/cardano-base/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href=\"https://github.com/input-output-hk/cardano-base/pull/388\" target=\"_blank\" rel=\"noopener noreferrer\">PR#388</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE's repo</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-28-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-28T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-04-28-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros\nPraos to a newer foundation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-28-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-04-28T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-04-28-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href=\"https://hackage.haskell.org/package/io-classes\" target=\"_blank\" rel=\"noopener noreferrer\"><code>io-classes</code></a>,</li><li><a href=\"https://hackage.haskell.org/package/io-classes-mtl\" target=\"_blank\" rel=\"noopener noreferrer\"><code>io-classes-mtl</code></a></li><li><a href=\"https://hackage.haskell.org/package/io-sim\" target=\"_blank\" rel=\"noopener noreferrer\"><code>io-sim</code></a>,</li><li><a href=\"https://hackage.haskell.org/package/strict-stm\" target=\"_blank\" rel=\"noopener noreferrer\"><code>strict-stm</code></a>,</li><li><a href=\"https://hackage.haskell.org/package/strict-mvar\" target=\"_blank\" rel=\"noopener noreferrer\"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href=\"https://engineering.iog.io/2023-04-14-io-sim-annoucement\" target=\"_blank\" rel=\"noopener noreferrer\">blog post</a>.  We made progress\nalso on another blog post which will describes the design of the P2P networking\nlayer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made\n<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of\n<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-log\">Detailed log<a class=\"hash-link\" href=\"#detailed-log\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ouroboros-network\">Ouroboros-Network<a class=\"hash-link\" href=\"#ouroboros-network\" title=\"Direct link to heading\">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4281\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4527\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4526\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4532\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4256\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4256</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"io-sim\">IO-Sim<a class=\"hash-link\" href=\"#io-sim\" title=\"Direct link to heading\">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>\nsupport), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href=\"https://github.com/input-output-hk/io-sim/pull/81\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#81</a>,\n<a href=\"https://github.com/input-output-hk/io-sim/pull/82\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#82</a>, <a href=\"https://github.com/input-output-hk/io-sim/pull/86\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#86</a>, <a href=\"https://github.com/input-output-hk/io-sim/pull/87\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#87</a>.</li><li>Renamed a module: <a href=\"https://github.com/input-output-hk/io-sim/pull/88\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href=\"https://github.com/input-output-hk/io-sim/pull/83\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim#83</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"typed-protocols\">Typed Protocols<a class=\"hash-link\" href=\"#typed-protocols\" title=\"Direct link to heading\">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:\n<a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/227\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href=\"https://github.com/input-output-hk/typed-protocols/pull/30\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href=\"https://github.com/input-output-hk/typed-protocols/pull/29\" target=\"_blank\" rel=\"noopener noreferrer\">typed-protocols#29</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-28-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-28T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-04-27-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the\nreport which likely is published next week. They put the spec into the\nrepository and website, addressed a user issue and fixed the TUI peer list.\nFurthermore, they updated dependencies, conducted a Twitter space on Auctions\nuse cases, covered the rollback bug with tests and implemented a solution.\nLooking ahead, their goals for next week include releasing 0.10.0, implementing\ntimed transactions support, writing a Query API ADR, and grooming work items\nlike off-chain benchmarks.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository\n<a href=\"https://github.com/input-output-hk/hydra/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a> and published on\n<a href=\"https://hydra.family/head-protocol/unstable/core-concepts/specification\" target=\"_blank\" rel=\"noopener noreferrer\">the\nwebsite</a></li><li>Groom and addressed user issue <a href=\"https://github.com/input-output-hk/hydra/issues/823\" target=\"_blank\" rel=\"noopener noreferrer\">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href=\"https://github.com/input-output-hk/hydra/issues/832\" target=\"_blank\" rel=\"noopener noreferrer\">#832</a></li><li>Groom off-chain benchmarks idea <a href=\"https://github.com/input-output-hk/hydra/issues/186\" target=\"_blank\" rel=\"noopener noreferrer\">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-27-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-04-27T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-04-21-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state\nmachine continuity on-chain, discussing voting project solutions, exploring\nadding Hydra support to kupo, and improving API navigation with a sidebar. The\nteam also updated dependencies and fixed issues in their test suites. Moving\nforward, the team plans to hold the next monthly review meeting, address a user\nissue, prepare for the 0.10.0 release, and work on a dirt road fix for the\nrollbacks issue with proper test coverage.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href=\"https://github.com/input-output-hk/hydra/pull/777\" target=\"_blank\" rel=\"noopener noreferrer\">#777</a>.</li><li>Took part in a twitter space on <a href=\"https://twitter.com/thepizzaknight_/status/1647833904282320896\" target=\"_blank\" rel=\"noopener noreferrer\">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href=\"https://github.com/CardanoSolutions/kupo/pull/117\" target=\"_blank\" rel=\"noopener noreferrer\">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href=\"https://hydra.family/head-protocol/unstable/api-reference/\" target=\"_blank\" rel=\"noopener noreferrer\">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting (join via <a href=\"https://discord.gg/inputoutput?event=1097863746216538194\" target=\"_blank\" rel=\"noopener noreferrer\">Discord</a> or <a href=\"https://www.addevent.com/event/ck16794110\" target=\"_blank\" rel=\"noopener noreferrer\">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href=\"https://github.com/input-output-hk/hydra/issues/823\" target=\"_blank\" rel=\"noopener noreferrer\">#823</a>.</li><li>Put the spec into the repo <a href=\"https://github.com/input-output-hk/hydra/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a> and prepare release 0.10.0.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-21-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-04-21T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-04-21-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.\nIn particular, the conway era now supports Plutus V3.\nFinally, we made small improvements to the ledger API and now host\nour Haskell code documentation (haddocks) on github pages.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-ledger-era\">Conway ledger era<a class=\"hash-link\" href=\"#conway-ledger-era\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3365\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3368\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3368</a>] - Conway genesis fix.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3369\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3372\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3384\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3384</a>] - Rename.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"haddocks-hosted-on-github-pages\">Haddocks hosted on github pages<a class=\"hash-link\" href=\"#haddocks-hosted-on-github-pages\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3385\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3385</a>] </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"small-improvements-to-the-api\">Small improvements to the API<a class=\"hash-link\" href=\"#small-improvements-to-the-api\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3366\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3366</a>]</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical Debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3367\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3367</a>] Fix cost model json instances.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3371\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3371</a>] UMap cleanup.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3373\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3375\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3377\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3377</a>] Fix cabal warnings.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3383\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3383</a>] Fix multi-asset test.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-21-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-21T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-04-20-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2315.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2315.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/779\" target=\"_blank\" rel=\"noopener noreferrer\">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/816\" target=\"_blank\" rel=\"noopener noreferrer\">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/814\" target=\"_blank\" rel=\"noopener noreferrer\">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/829\" target=\"_blank\" rel=\"noopener noreferrer\">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href=\"https://github.com/input-output-hk/mithril/issues/780\" target=\"_blank\" rel=\"noopener noreferrer\">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href=\"https://github.com/input-output-hk/mithril/issues/847\" target=\"_blank\" rel=\"noopener noreferrer\">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/850\" target=\"_blank\" rel=\"noopener noreferrer\">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href=\"https://github.com/input-output-hk/mithril/issues/848\" target=\"_blank\" rel=\"noopener noreferrer\">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/849\" target=\"_blank\" rel=\"noopener noreferrer\">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href=\"https://github.com/input-output-hk/mithril/issues/851\" target=\"_blank\" rel=\"noopener noreferrer\">#851</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-20-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-04-20T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-04-20-node-cli-api",
+            "content_html": "<h1>2023-04-20 - 2023-05-04</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5136\" target=\"_blank\" rel=\"noopener noreferrer\">Modify golden test functions to automatically create parent directories</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5132\" target=\"_blank\" rel=\"noopener noreferrer\">SPO on-chain poll commands adjustments</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5119\" target=\"_blank\" rel=\"noopener noreferrer\">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5172\" target=\"_blank\" rel=\"noopener noreferrer\"><code>--out-file</code> option for governance commands</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5130\" target=\"_blank\" rel=\"noopener noreferrer\">UTC Time to slots conversion function</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5157\" target=\"_blank\" rel=\"noopener noreferrer\">Update CHaP to get latest ledger with performance fix</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4854\" target=\"_blank\" rel=\"noopener noreferrer\">Integration with Peer Sharing</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-20-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-20T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-04-19-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism\nfor UTxO-HD, and modifications to the mempool benchmarks that this prototype\nrequires.</p><p>On the Genesis front we validated that the fragment size calculation in\n<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it\nwe will get performance that is acceptably close to that of the baseline. We\nalso started investigating a performance fix that does not alter the existing\nbaseline behavior too much. In addition we reviewed our Genesis attack vector\ncalculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving\nour release process, to support the Cardano-wide efforts in this area. We also\nperformed an analysis on the number of file descriptors that consensus use. This\ninformation can be used by the node operators to check if the number of file\ndescriptors they want to support are enough.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-19-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-19T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-04-19-performance-and-tracing",
+            "content_html": "<ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We're working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we've laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the\n<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial\nin locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of\nbenchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still\nongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we're working with the implementation\nof data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational\nburden inside the node needs to be kept to an absolute minimum. We're currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer\nfeature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-manifest\">Detailed manifest<a class=\"hash-link\" href=\"#detailed-manifest\" title=\"Direct link to heading\">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.\nThese dependencies come from different package sources, have different versioning policies, and an identical package version might provide different\nperformance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated\nby making all component bumps visible and accessible.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ghc-profiling-inside-workbench\">GHC profiling inside workbench<a class=\"hash-link\" href=\"#ghc-profiling-inside-workbench\" title=\"Direct link to heading\">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of\nprofiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already\nbeen merged to <code>master</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.\nThis results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-19-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* Benchmarking: We performed a series of benchmarks aimed at the new 8.0 release branch and built a timeline from the 1.35 releases to that branch.",
+            "date_modified": "2023-04-19T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-04-17-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"incident-reporting-cardano-block-production-temporary-outage\">Incident reporting: Cardano block production temporary outage<a class=\"hash-link\" href=\"#incident-reporting-cardano-block-production-temporary-outage\" title=\"Direct link to heading\">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.\nThe investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.\nFollowing successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.\nWith the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"further-details\">Further Details<a class=\"hash-link\" href=\"#further-details\" title=\"Direct link to heading\">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href=\"https://www.314pool.com/post/cardano-post-mortem-1\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-17-ledger",
+            "title": "Incident Report",
+            "summary": "Incident reporting: Cardano block production temporary outage",
+            "date_modified": "2023-04-17T00:00:00.000Z",
+            "author": {
+                "name": "Kevin Hammond",
+                "url": "https://github.com/kevinhammond"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-04-14-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has submitted two papers for publication, carried\nout consultancy with other teams and has an opening for an intern.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href=\"https://apply.workable.com/io-global/j/BFEC5B0AFF/\" target=\"_blank\" rel=\"noopener noreferrer\">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-14-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-04-14T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-04-14-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer\ntooling, and improving the API for voting use cases. They reviewed progress on\nauction, payments, and voting projects and made worked on reproducing a bug with\nhandling rollbacks. Moving forward, the team plans to update dependencies,\nimplement a dirt road fix for the rollbacks bug, and explore adding Hydra\nsupport to kupo.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node\nused in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href=\"https://github.com/input-output-hk/hydra/pull/808\" target=\"_blank\" rel=\"noopener noreferrer\">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href=\"https://github.com/input-output-hk/hydra/issues/813\" target=\"_blank\" rel=\"noopener noreferrer\">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">#713</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-14-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-04-14T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-04-07-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team published the monthly report for March, created\nseparate links for different versions of documentation, and clarified potential\nsolutions for the Rollbacks bug. The team also discussed Query API requests for\nthe Hydra Voting project and met with community members to answer questions\nabout Hydra. Moving forward, the team plans to integrate the specification into\nthe repository, implement a short-term fix for the Rollbacks issue, and draft a\nQuery API ADR.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Published monthly reports on <a href=\"https://hydra.family/head-protocol/monthly/2023-03\" target=\"_blank\" rel=\"noopener noreferrer\">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href=\"https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs\" target=\"_blank\" rel=\"noopener noreferrer\">released</a> vs. <a href=\"https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs\" target=\"_blank\" rel=\"noopener noreferrer\">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href=\"https://github.com/input-output-hk/hydra/discussions/797\" target=\"_blank\" rel=\"noopener noreferrer\">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href=\"https://github.com/input-output-hk/hydra/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a></li><li>Dirt road fix for rollbacks <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility\n<a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">#713</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-07-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-04-07T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-04-06-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2313.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2313.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/779\" target=\"_blank\" rel=\"noopener noreferrer\">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/813\" target=\"_blank\" rel=\"noopener noreferrer\">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/815\" target=\"_blank\" rel=\"noopener noreferrer\">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/817\" target=\"_blank\" rel=\"noopener noreferrer\">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/827\" target=\"_blank\" rel=\"noopener noreferrer\">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/828\" target=\"_blank\" rel=\"noopener noreferrer\">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/823\" target=\"_blank\" rel=\"noopener noreferrer\">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/824\" target=\"_blank\" rel=\"noopener noreferrer\">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href=\"https://github.com/input-output-hk/mithril/issues/843\" target=\"_blank\" rel=\"noopener noreferrer\">#843</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-06-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-04-06T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-04-05-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are\nnow working on improving the DB lock mechanism to improve performance. We also\nintroduced several improvements to the file system abstraction and simulation\nlayer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and\n<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,\nsoliciting feedback from Networking Team and IOG Researchers. We also opened up\na PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being\nreviewed.</p><p>On the support front, we got a new Consensus version that can use different\nfundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was\ndiscovered by our <code>QuickCheck</code> property tests.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-05-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-05T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-04-05-node-cli-api",
+            "content_html": "<h1>2023-04-05 - 2023-04-19</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5112\" target=\"_blank\" rel=\"noopener noreferrer\">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5061\" target=\"_blank\" rel=\"noopener noreferrer\">Remove --stake-address option from stake-address build</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5059\" target=\"_blank\" rel=\"noopener noreferrer\">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5053\" target=\"_blank\" rel=\"noopener noreferrer\">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5046\" target=\"_blank\" rel=\"noopener noreferrer\">Move parsers to reusable location</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4910\" target=\"_blank\" rel=\"noopener noreferrer\">New --socket-path cli option</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5108\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-1694 make space for DRep certificates</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5105\" target=\"_blank\" rel=\"noopener noreferrer\">File type to track the content and direction of files</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5087\" target=\"_blank\" rel=\"noopener noreferrer\">Fix import warning</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5086\" target=\"_blank\" rel=\"noopener noreferrer\">Expose UsingRawBytes et al types</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5085\" target=\"_blank\" rel=\"noopener noreferrer\">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5072\" target=\"_blank\" rel=\"noopener noreferrer\">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5071\" target=\"_blank\" rel=\"noopener noreferrer\">New genCardanoKeyWitness function</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5069\" target=\"_blank\" rel=\"noopener noreferrer\">Replace roundtripCBOR with trippingCbor</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5064\" target=\"_blank\" rel=\"noopener noreferrer\">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5063\" target=\"_blank\" rel=\"noopener noreferrer\">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5057\" target=\"_blank\" rel=\"noopener noreferrer\">Define Functor instance for FileError</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5049\" target=\"_blank\" rel=\"noopener noreferrer\">Split serialisation from IO</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5115\" target=\"_blank\" rel=\"noopener noreferrer\">Master build failure fixes</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5106\" target=\"_blank\" rel=\"noopener noreferrer\">Allow renamed fields to exist if values the same</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5091\" target=\"_blank\" rel=\"noopener noreferrer\">workbench: updates</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5084\" target=\"_blank\" rel=\"noopener noreferrer\">Delete duplicate packages sort packages and imports</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5110\" target=\"_blank\" rel=\"noopener noreferrer\">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5099\" target=\"_blank\" rel=\"noopener noreferrer\">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5083\" target=\"_blank\" rel=\"noopener noreferrer\">Ergonomic directory creation code in tests</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5036\" target=\"_blank\" rel=\"noopener noreferrer\">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5013\" target=\"_blank\" rel=\"noopener noreferrer\">Integrate latest ledger dependencies</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-05-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-04-05T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-04-05-performance-and-tracing",
+            "content_html": "<ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We're profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>\nhelped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very\ndetailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing\nthe highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we've worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions\nfor tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"general\">General<a class=\"hash-link\" href=\"#general\" title=\"Direct link to heading\">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance\nanalysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we've created a profile family for the workbench that's specifically aimed at measuring and comparing tracing system configurations.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"plutus-library\">Plutus library<a class=\"hash-link\" href=\"#plutus-library\" title=\"Direct link to heading\">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.\nThis will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.\nIt is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is\nbeing improved to minimize any friction for the backend user.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-04-05-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* Benchmarking: We worked on adjusting our infrastructure to the new 8.0 release branch and performed a (very) early run.",
+            "date_modified": "2023-04-05T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-03-31-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381's PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>BLS12-381 branch merged <a href=\"https://github.com/input-output-hk/cardano-base/pull/266\" target=\"_blank\" rel=\"noopener noreferrer\">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4395\" target=\"_blank\" rel=\"noopener noreferrer\">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href=\"https://github.com/input-output-hk/io-sim/pull/70\" target=\"_blank\" rel=\"noopener noreferrer\">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Included <a href=\"https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a\" target=\"_blank\" rel=\"noopener noreferrer\">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href=\"https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f\" target=\"_blank\" rel=\"noopener noreferrer\">JubJub</a> to our branch of halo2curves </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>Minor reorg <a href=\"https://github.com/input-output-hk/musig2/pull/42\" target=\"_blank\" rel=\"noopener noreferrer\">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href=\"https://github.com/input-output-hk/musig2/pull/43\" target=\"_blank\" rel=\"noopener noreferrer\">PR#</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-31-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-31T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-03-31-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on final drafts of two papers\nfor internal review and planning next steps of analysis of consensus\ndesign refiniments.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for\ndistributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-31-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-03-31T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-03-31-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The\nsemi-automated smoke tests and some missing documentation is still preventing\nfrom calling that fully done. They fixed smaller issues and made a step in the\nHead protocol more robust. Besides development, they met with interested people\nfrom the community who want to get started collaborating on communication and\nmarketing materials.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href=\"https://github.com/input-output-hk/hydra/discussions/797\" target=\"_blank\" rel=\"noopener noreferrer\">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href=\"https://github.com/input-output-hk/hydra/issues/560\" target=\"_blank\" rel=\"noopener noreferrer\">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href=\"https://github.com/input-output-hk/hydra/pull/786\" target=\"_blank\" rel=\"noopener noreferrer\">#786</a></li><li>Completed configurable API feature <a href=\"https://github.com/input-output-hk/hydra/issues/380\" target=\"_blank\" rel=\"noopener noreferrer\">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href=\"https://github.com/input-output-hk/hydra/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-31-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-03-31T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-03-31-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We are still heavily involved in work related to preparing the next release.\nThe other main thing we have worked on is experimentation about how we will\nhandle the DRep stake distribution for CIP-1694 in the conway ledger era.\nLastly, we merged a fix for\n<a href=\"https://github.com/input-output-hk/cardano-node/issues/4826\" target=\"_blank\" rel=\"noopener noreferrer\">node-4826</a>\ninto our main branch (there will be a post-mortem shortly).</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support-for-the-next-release\">Support for the next release<a class=\"hash-link\" href=\"#support-for-the-next-release\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3363\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3361\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3360\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3357\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3356\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3345\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3345</a> - Added helper functions for the CLI.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3342\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"experiments-for-drep-stake-distribution\">Experiments for DRep stake distribution<a class=\"hash-link\" href=\"#experiments-for-drep-stake-distribution\" title=\"Direct link to heading\">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.\nWe would like to be able to use the current stake distribution at the epoch boundary\nfor DRep voting so that people can always vote themselves in time for any proposal.\nTo this end, we have a prototype of an incremental computation based on the incremental\nlambda calculus, together with tests and benchmarks (which are very promising).\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3344\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate\nthe new incremental computations.\nWe have two draft PRs up for possibles solution.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3353\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3353</a> and <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3364\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3364</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt-and-bug-fixes\">Technical debt and bug fixes<a class=\"hash-link\" href=\"#technical-debt-and-bug-fixes\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3343\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3343</a> - A fix <a href=\"https://github.com/input-output-hk/cardano-node/issues/4826\" target=\"_blank\" rel=\"noopener noreferrer\">node-4826</a>.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3333\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3347\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3341\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3341</a> - Removal of code duplication.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"documentation-changes\">Documentation changes<a class=\"hash-link\" href=\"#documentation-changes\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3354\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3354</a> - Rename \"optional datums\" with \"supplemental datums\" in the alonzo spec.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3352\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3351\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3350\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-31-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-31T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-03-27-system-test",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"framework-improvements\">Framework improvements:<a class=\"hash-link\" href=\"#framework-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href=\"https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26\" target=\"_blank\" rel=\"noopener noreferrer\">Full list of closed PRs</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node\">Node:<a class=\"hash-link\" href=\"#node\" title=\"Direct link to heading\">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href=\"https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html\" target=\"_blank\" rel=\"noopener noreferrer\">1.35.5</a> release</li><li>tested the <a href=\"https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html\" target=\"_blank\" rel=\"noopener noreferrer\">1.35.6</a> release</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"db-sync\">DB-Sync:<a class=\"hash-link\" href=\"#db-sync\" title=\"Direct link to heading\">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-27-system-test",
+            "title": "System Test Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-27T00:00:00.000Z",
+            "author": {
+                "name": "Martin Kourim",
+                "url": "https://github.com/mkoura"
+            },
+            "tags": [
+                "system-test"
+            ]
+        },
+        {
+            "id": "2023-03-24-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review\nmeeting for March. They demonstrated a Hydra Head on mainnet, which was running\nthe hydraw demo application. While this marks an important milestone, they also\nemphasized that more features are still to be added as needed for applications\nto run on Hydra. Besides this, the roadmap is getting cleaned up to encourage\ndiscussions and provide more space for user requests.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting <a href=\"https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392\" target=\"_blank\" rel=\"noopener noreferrer\">slides</a>/<a href=\"https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c\" target=\"_blank\" rel=\"noopener noreferrer\">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href=\"https://github.com/input-output-hk/hydra/pull/786\" target=\"_blank\" rel=\"noopener noreferrer\">#786</a> and investigated a potential bug in rollback handling <a href=\"https://github.com/input-output-hk/hydra/issues/784\" target=\"_blank\" rel=\"noopener noreferrer\">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href=\"https://github.com/input-output-hk/hydra/issues/380\" target=\"_blank\" rel=\"noopener noreferrer\">#380</a></li><li>Integrate Hydra specification into repository <a href=\"https://github.com/input-output-hk/hydra/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-24-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-03-24T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-03-23-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on\ntechnical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an\nepoch, but also the first epoch of the last epoch.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1367\" target=\"_blank\" rel=\"noopener noreferrer\">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn't rollback and caused wrong values\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1370\" target=\"_blank\" rel=\"noopener noreferrer\">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even\nthough it was never used. Also refactored the no ledger part of the codebase.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1378\" target=\"_blank\" rel=\"noopener noreferrer\">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or\ndisables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync\nmainnet in hours.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1379\" target=\"_blank\" rel=\"noopener noreferrer\">#1379</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-23-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-23T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-03-23-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2310.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href=\"https://github.com/input-output-hk/mithril/issues/707\" target=\"_blank\" rel=\"noopener noreferrer\">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href=\"https://github.com/input-output-hk/mithril/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/779\" target=\"_blank\" rel=\"noopener noreferrer\">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/787\" target=\"_blank\" rel=\"noopener noreferrer\">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/813\" target=\"_blank\" rel=\"noopener noreferrer\">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/815\" target=\"_blank\" rel=\"noopener noreferrer\">#815</a></li><li>Completed the creation of a stake distribution service <a href=\"https://github.com/input-output-hk/mithril/issues/799\" target=\"_blank\" rel=\"noopener noreferrer\">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href=\"https://github.com/input-output-hk/mithril/issues/777\" target=\"_blank\" rel=\"noopener noreferrer\">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href=\"https://github.com/input-output-hk/mithril/issues/810\" target=\"_blank\" rel=\"noopener noreferrer\">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href=\"https://github.com/input-output-hk/mithril/issues/794\" target=\"_blank\" rel=\"noopener noreferrer\">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href=\"https://github.com/input-output-hk/mithril/issues/804\" target=\"_blank\" rel=\"noopener noreferrer\">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href=\"https://github.com/input-output-hk/mithril/issues/807\" target=\"_blank\" rel=\"noopener noreferrer\">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href=\"https://github.com/input-output-hk/mithril/issues/820\" target=\"_blank\" rel=\"noopener noreferrer\">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href=\"https://github.com/input-output-hk/mithril/issues/801\" target=\"_blank\" rel=\"noopener noreferrer\">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href=\"https://github.com/input-output-hk/mithril/issues/803\" target=\"_blank\" rel=\"noopener noreferrer\">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href=\"https://github.com/input-output-hk/mithril/issues/818\" target=\"_blank\" rel=\"noopener noreferrer\">#818</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-23-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-03-23T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-03-22-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD\nprototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>\npackage, which provides a file-system abstraction layer that can be used for\ntesting and simulation. This makes the Consensus code base smaller, while\nproviding a package that the community can reuse and contribute to. We also\nfixed a failing property test related to iterators. We are also working on\nmempool and VRF improvements.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-details\">Low-level details<a class=\"hash-link\" href=\"#low-level-details\" title=\"Direct link to heading\">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4425\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/2\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4460\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/5\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/6\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/7\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href=\"https://github.com/input-output-hk/fs-sim/pull/8\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href=\"https://github.com/input-output-hk/lmdb-simple/pull/20\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/150\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-22-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-22T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-03-22-node-cli-api",
+            "content_html": "<h1>2023-03-22 - 2023-04-05</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5041\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unused error constructors</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4909\" target=\"_blank\" rel=\"noopener noreferrer\">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">New cardano-cli ping command.</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5040\" target=\"_blank\" rel=\"noopener noreferrer\">Remove use of AcquireFailure type</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5038\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify implementation of executeQueryAnyMode</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5002\" target=\"_blank\" rel=\"noopener noreferrer\">Script data serialisation</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4956\" target=\"_blank\" rel=\"noopener noreferrer\">Guard against overflows in Shelley TxIns</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4941\" target=\"_blank\" rel=\"noopener noreferrer\">Combinators for TxBodyContent and related types</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5011\" target=\"_blank\" rel=\"noopener noreferrer\">Use Haskell variables for passing values.</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4879\" target=\"_blank\" rel=\"noopener noreferrer\">Re-enable kes-period-info test.</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-22-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-22T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-03-22-performance-and-tracing",
+            "content_html": "<ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we're currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We're working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we're laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-tracing\">New tracing<a class=\"hash-link\" href=\"#new-tracing\" title=\"Direct link to heading\">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe\na slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ghc-rts-parametrization\">GHC RTS parametrization<a class=\"hash-link\" href=\"#ghc-rts-parametrization\" title=\"Direct link to heading\">​</a></h3><p>We're currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies\non different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-sourcing\">Open Sourcing<a class=\"hash-link\" href=\"#open-sourcing\" title=\"Direct link to heading\">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we're refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we're currently undertaking an effort to multi-layered documentation: a condensed version, as well\nas a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points\nfor users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"general\">General<a class=\"hash-link\" href=\"#general\" title=\"Direct link to heading\">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we're laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will\nincrease confidence in specific metrics.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis\nis patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We're confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-22-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.",
+            "date_modified": "2023-03-22T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-03-21-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P\nfunctionality.</p><p>We received reports from some SPOs who encountered problems with their non\nP2P block producing nodes not being able to connect to their P2P relay.  Karl\nKnutsson (from Cardano Foundation) reproduced this issue between two nodes (a\nnon P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed\nit and found a bug in the legacy non p2p code.  The bug is only possible to\ntrigger with a P2P node which is binding its outbound connection port to\na fixed IP address and port (default in p2p).  A possible solution was found.\nFor more information see <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4465\" target=\"_blank\" rel=\"noopener noreferrer\">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no\nlonger available as a standalone binary, but instead it will become part of\n<code>cardano-cli</code> (see <a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger\npeers to the outbound governor, implemented tests and fixed found issues\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4462\" target=\"_blank\" rel=\"noopener noreferrer\">#4462</a>).  We also made the information if a given peer plays the role of\na big ledger peer to the mini-protocols.  This will allow to modify\nmini-protocol applications for such peers.   As part of this functionality we\nrefactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see\n<a href=\"https://github.com/input-output-hk/io-sim/pull/73\" target=\"_blank\" rel=\"noopener noreferrer\">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in\n<code>cardano-node</code> (see <a href=\"https://github.com/input-output-hk/cardano-node/pull/4902\" target=\"_blank\" rel=\"noopener noreferrer\">#4902</a>).</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-21-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-21T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-03-17-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381's PR approved, only blocker is Windows' CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Merged <a href=\"https://github.com/input-output-hk/mithril/pull/783\" target=\"_blank\" rel=\"noopener noreferrer\">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>BLS12-381 branch approved <a href=\"https://github.com/input-output-hk/cardano-base/pull/266\" target=\"_blank\" rel=\"noopener noreferrer\">PR#266</a>. Blocker is Windown's CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href=\"https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md\" target=\"_blank\" rel=\"noopener noreferrer\">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can't use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it's C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-17-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-17T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-03-17-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the\nhydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added\nsome detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA\nper commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra\nHead on the Cardano mainnet, ideally just in time for the monthly review\nmeeting. See the hydra channels on the IOG Technical Community discord server\nfor details.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node\n<a href=\"https://github.com/input-output-hk/hydra/pull/763\" target=\"_blank\" rel=\"noopener noreferrer\">#763</a></li><li>Pay back funds to faucet after smoke-test run\n<a href=\"https://github.com/input-output-hk/hydra/pull/773\" target=\"_blank\" rel=\"noopener noreferrer\">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet\n<a href=\"https://github.com/input-output-hk/hydra/pull/775\" target=\"_blank\" rel=\"noopener noreferrer\">#775</a></li><li>Created golden tests to assure the script hash stays the same between\nchanges <a href=\"https://github.com/input-output-hk/hydra/pull/772\" target=\"_blank\" rel=\"noopener noreferrer\">#772</a></li><li>Removed hardcoded error codes in plutus scripts\n<a href=\"https://github.com/input-output-hk/hydra/pull/768\" target=\"_blank\" rel=\"noopener noreferrer\">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state\n<a href=\"https://github.com/input-output-hk/hydra/pull/767\" target=\"_blank\" rel=\"noopener noreferrer\">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-17-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-03-17T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-03-17-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We made further progress on the conway ledger era.\nIn particular, we expanded the ledger API significantly, including lots of governance features.\nWe also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed\ntechnical debt.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"expanded-ledger-api\">Expanded ledger API<a class=\"hash-link\" href=\"#expanded-ledger-api\" title=\"Direct link to heading\">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3328\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3328</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-ledger-rules\">Conway ledger rules<a class=\"hash-link\" href=\"#conway-ledger-rules\" title=\"Direct link to heading\">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.\nMoreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3339\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3339</a></li><li>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3326\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3326</a></li><li>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3330\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3330</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"incremental-spodrep-stake-distribution-computation\">Incremental SPO/DRep stake distribution computation<a class=\"hash-link\" href=\"#incremental-spodrep-stake-distribution-computation\" title=\"Direct link to heading\">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus\nto maintain several of the stake distributions incrementally.\nFor the per-SPO distribution, this is a performance improvement.\nFor the (conway) per-DRep distribution, this is will allow those who have delegated their votes\nto a DRep to have time to react to any votes that they disapprove of.\n(Sorry, no code to share just yet, more to come.)</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>Improved CBOR testing facilities <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3332\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3332</a></li><li>GitHub actions improvement <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3320\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3338\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3323</a></li><li>Minor OCert improvements <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3327\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3327</a></li><li>Remove duplication <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3341\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3331\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3331</a> </li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-17-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-17T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-03-16-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on drafts of two papers\nimproving the deltaQ tutorial, consulting on performance design, and\nthe final version of the Djed paper.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial\nimprovement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation\nproofs for draft paper about verifying design refinements for\ndistributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-16-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-03-16T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-03-10-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a\nHydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved\nthe test suite of the <code>hydra-plutus</code> scripts. The specification is constantly\ngetting improved upon reviewer feedback on overleaf - this week the graphical\nnotation was refined to be more transaction-focused.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href=\"https://github.com/input-output-hk/hydra/issues/737\" target=\"_blank\" rel=\"noopener noreferrer\">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href=\"https://github.com/input-output-hk/hydra/pull/715\" target=\"_blank\" rel=\"noopener noreferrer\">#715</a></li><li>Improved our mutation test suite to all expected errors <a href=\"https://github.com/input-output-hk/hydra/issues/705\" target=\"_blank\" rel=\"noopener noreferrer\">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-10-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-03-10T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-03-09-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href=\"https://github.com/input-output-hk/mithril/issues/707\" target=\"_blank\" rel=\"noopener noreferrer\">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href=\"https://github.com/input-output-hk/mithril/issues/752\" target=\"_blank\" rel=\"noopener noreferrer\">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href=\"https://github.com/input-output-hk/mithril/issues/786\" target=\"_blank\" rel=\"noopener noreferrer\">#786</a></li><li>Worked on handling the API version with an era switch <a href=\"https://github.com/input-output-hk/mithril/issues/727\" target=\"_blank\" rel=\"noopener noreferrer\">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/779\" target=\"_blank\" rel=\"noopener noreferrer\">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href=\"https://github.com/input-output-hk/mithril/issues/787\" target=\"_blank\" rel=\"noopener noreferrer\">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href=\"https://github.com/input-output-hk/mithril/issues/665\" target=\"_blank\" rel=\"noopener noreferrer\">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href=\"https://github.com/input-output-hk/mithril/issues/777\" target=\"_blank\" rel=\"noopener noreferrer\">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href=\"https://github.com/input-output-hk/mithril/issues/769\" target=\"_blank\" rel=\"noopener noreferrer\">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href=\"https://github.com/input-output-hk/mithril/issues/791\" target=\"_blank\" rel=\"noopener noreferrer\">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href=\"https://github.com/input-output-hk/mithril/issues/794\" target=\"_blank\" rel=\"noopener noreferrer\">#794</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-09-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-03-09T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-03-08-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD\nprototype, and introducing improvements to the <code>lmdb</code> related packages. In\nparticular we identified an opportunity to gain performance by handling locks in\na more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and\nResearchers caught. We also came op with a road map for not only testing the\nGenesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created\ncomponent-level micro-benchmarks for adding transactions to the mempool. The\nresults of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href=\"https://input-output-hk.github.io/ouroboros-consensus/\" target=\"_blank\" rel=\"noopener noreferrer\">web\npage</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>\nrepository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time\nGitHub actions take in <code>ouroboros-network</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD Prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a\nresult of the first round of sytem-level benchmarks, we identified an\nopportunity to optimise the way we handle locks to improve performance\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4393\" target=\"_blank\" rel=\"noopener noreferrer\">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href=\"https://github.com/input-output-hk/lmdb-simple/pull/19\" target=\"_blank\" rel=\"noopener noreferrer\">New tests</a> for read-only transaction handles.</li><li><a href=\"https://github.com/input-output-hk/lmdb-simple/pull/18\" target=\"_blank\" rel=\"noopener noreferrer\">New functions</a> and <a href=\"https://github.com/input-output-hk/lmdb-simple/pull/13\" target=\"_blank\" rel=\"noopener noreferrer\">data types</a>.</li><li><a href=\"https://github.com/input-output-hk/lmdb-simple/pull/11\" target=\"_blank\" rel=\"noopener noreferrer\">Updates</a> to support improved type safety and smaller constraints in\nthe UTxO HD prototype.</li><li>Windows and MacOS <a href=\"https://github.com/input-output-hk/haskell-lmdb/pull/8\" target=\"_blank\" rel=\"noopener noreferrer\">CI support</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in\nthe Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early\nmilestones that are applicable to today's master branch, ie tests that are\nuseful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for\nthe Honest leader schedule and one as-aggressive-as-possible Adversarial\nleader schedule that together satisfy the Praos properties that the Consensus\ndesign takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves\ndifferently in the baseline compared to the prototype, and we are close to\nhaving a full picture of how the Consensus components interact during bulk sync.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4400\" target=\"_blank\" rel=\"noopener noreferrer\">created</a> component-level micro-benchmarks for adding transactions\nto the mempool. We plan on extending this to more mempool actions and different\ntypes of blocks. We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4422\" target=\"_blank\" rel=\"noopener noreferrer\">store</a> the benchmark data to make it available\nto the GitHub action that <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/12\" target=\"_blank\" rel=\"noopener noreferrer\">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4429\" target=\"_blank\" rel=\"noopener noreferrer\">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4423\" target=\"_blank\" rel=\"noopener noreferrer\">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus\npackages.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>We finished moving the Consensus documentation <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4374\" target=\"_blank\" rel=\"noopener noreferrer\">from</a>\n<code>ouroboros-network</code> <a href=\"https://github.com/input-output-hk/haskell-lmdb/pull/8\" target=\"_blank\" rel=\"noopener noreferrer\">to</a> <code>ouroboros-consensus</code>, in preparation for\nmigrating the code to the latter repository.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4412\" target=\"_blank\" rel=\"noopener noreferrer\">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4421\" target=\"_blank\" rel=\"noopener noreferrer\">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,\nthereby reducing the time CI jobs take.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-08-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-08T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-03-08-node-cli-api",
+            "content_html": "<h1>2023-03-08 - 2023-03-21</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>General bug fixes and some refactoring </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4958\" target=\"_blank\" rel=\"noopener noreferrer\">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4880\" target=\"_blank\" rel=\"noopener noreferrer\">Detect invalid counter and certificate</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5003\" target=\"_blank\" rel=\"noopener noreferrer\">Add missing imports</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/5001\" target=\"_blank\" rel=\"noopener noreferrer\">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4967\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unnecessary functions</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4953\" target=\"_blank\" rel=\"noopener noreferrer\">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4903\" target=\"_blank\" rel=\"noopener noreferrer\">Reduce number of calls to toLedgerPParams</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4763\" target=\"_blank\" rel=\"noopener noreferrer\">Remove simple script distinction</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4686\" target=\"_blank\" rel=\"noopener noreferrer\">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4683\" target=\"_blank\" rel=\"noopener noreferrer\">Derive Eq instance for AcquiringFailure</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4682\" target=\"_blank\" rel=\"noopener noreferrer\">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4344\" target=\"_blank\" rel=\"noopener noreferrer\">Remove unnecessary validation of Data</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3775\" target=\"_blank\" rel=\"noopener noreferrer\">Remove hint of \"string\" support for ScriptData</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4988\" target=\"_blank\" rel=\"noopener noreferrer\">Conway hard forks on prot-ver 9</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4968\" target=\"_blank\" rel=\"noopener noreferrer\">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4921\" target=\"_blank\" rel=\"noopener noreferrer\">Take all dependencies from Hackage or CHaP</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4911\" target=\"_blank\" rel=\"noopener noreferrer\">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4902\" target=\"_blank\" rel=\"noopener noreferrer\">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4729\" target=\"_blank\" rel=\"noopener noreferrer\">fix cardano-testnet Babbage genesis.json</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-08-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-08T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-03-08-performance-and-tracing",
+            "content_html": "<ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"1356-release\">1.35.6 release<a class=\"hash-link\" href=\"#1356-release\" title=\"Direct link to heading\">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"analysis-pipeline\">Analysis pipeline<a class=\"hash-link\" href=\"#analysis-pipeline\" title=\"Direct link to heading\">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better\ndifferentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.\nAdditionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking\ndata more easily accessible.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-sourcing\">Open Sourcing<a class=\"hash-link\" href=\"#open-sourcing\" title=\"Direct link to heading\">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we're currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we've begun working on a small visualization demo and interactive API documentation. Those will enable\nthird parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make\nthe switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-08-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.",
+            "date_modified": "2023-03-08T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-03-03-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Bumped to version <a href=\"https://crates.io/crates/kes-summed-ed25519/0.2.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href=\"https://github.com/input-output-hk/mithril/pull/783\" target=\"_blank\" rel=\"noopener noreferrer\">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href=\"https://github.com/input-output-hk/mithril/pull/773\" target=\"_blank\" rel=\"noopener noreferrer\">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href=\"https://github.com/input-output-hk/mithril/pull/774\" target=\"_blank\" rel=\"noopener noreferrer\">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href=\"https://github.com/input-output-hk/cardano-base/pull/266\" target=\"_blank\" rel=\"noopener noreferrer\">PR#266</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. \t</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"sidechains\">Sidechains<a class=\"hash-link\" href=\"#sidechains\" title=\"Direct link to heading\">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-03-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-03T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-03-03-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on drafts of two papers and one\ntechnical report, improving the deltaQ tutorial, consulting on\nperformance design, and the Djed paper has been accepted for\npublication.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ\ntutorial based on experience with systems that manage risk at\nmultiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency\nlaws for draft paper about verifying design refinements for\ndistributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>\"Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin\nProtocol\" has been accepted for publication at IEEE ICBC 2023</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-03-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-03-03T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-03-03-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team released version\n<a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.9.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.9.0</a> - a version\nof the <code>hydra-node</code> with fully specified behavior of on-chain scripts and\noff-chain head-logic, decreased costs for opening/closing a Head and scalable\ncontestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href=\"https://hydra.family/head-protocol/monthly/2023-03\" target=\"_blank\" rel=\"noopener noreferrer\">monthly\nreport</a> of the Hydra project\nand conducted a review meeting with an increasingly wider audience. The team\nplans to extend invitations through the new Hydra\n<a href=\"https://discord.gg/Bwdy2jNdm2\" target=\"_blank\" rel=\"noopener noreferrer\">#announcements</a> discord channel for the next\nmonths, stay tuned!</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting with report published <a href=\"https://hydra.family/head-protocol/monthly/2023-03\" target=\"_blank\" rel=\"noopener noreferrer\">on website</a></li><li>Fixed smoke tests <a href=\"https://github.com/input-output-hk/hydra/pull/726\" target=\"_blank\" rel=\"noopener noreferrer\">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href=\"https://github.com/input-output-hk/hydra/pull/748\" target=\"_blank\" rel=\"noopener noreferrer\">#748</a> + head reference script <a href=\"https://github.com/input-output-hk/hydra/pull/701\" target=\"_blank\" rel=\"noopener noreferrer\">#701</a>)</li><li>Released version <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.9.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">#713</a></li><li>New discord category with <a href=\"https://discord.gg/Bwdy2jNdm2\" target=\"_blank\" rel=\"noopener noreferrer\">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href=\"https://github.com/orgs/input-output-hk/projects/21/views/26\" target=\"_blank\" rel=\"noopener noreferrer\">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-03-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-03-03T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-03-03-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger\nwork into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway-rules\">Conway rules<a class=\"hash-link\" href=\"#conway-rules\" title=\"Direct link to heading\">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec\nwith respect to the ratification and enactment logic.</p><p>See the notes in <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3291\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3291</a> for more details.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"constraint-based-generators\">Constraint based generators<a class=\"hash-link\" href=\"#constraint-based-generators\" title=\"Direct link to heading\">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing\nsupport for the main ledger properties.\nThe new constraint based generators can now generate full ledger states with what is probably\nvery close to the real constraints (if anything, it is under constrained).\nNext we will work on generating a transaction in the context of a ledger state, which would allow\nus to actually start using these generators for real tests.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3219\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3219</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"preparing-a-release-now-with-proper-versioning\">Preparing a release, now with proper versioning<a class=\"hash-link\" href=\"#preparing-a-release-now-with-proper-versioning\" title=\"Direct link to heading\">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new\nversion of consensus, using CHaPs.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3308\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3308</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3269\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are\nlexicographically ordered in the Plutus script context. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3306\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation\n(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3307\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3311\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3310\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3310</a>.</li><li>We improved our nightly tests. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3316\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3316</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-03-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-03T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-03-02-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing\nforward implementation of eclipse evasion.  We also found a bug in our\nsimulation testing setup (in integration of test node).  We also overviewed the\nwork on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and\n<code>ouroboros-network-protocols-0.3.0.0</code> to <a href=\"https://github.com/input-output-hk/cardano-haskell-packages/pull/147\" target=\"_blank\" rel=\"noopener noreferrer\">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to\nconfigure inbound connection limits, see <a href=\"https://github.com/input-output-hk/cardano-node/pull/4902\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it's\nvalidation of DNS names, IP address &amp; ports when registering a stake pool\nshould be more strict to protect against common mistakes which we identified on\nthe chain.  See <a href=\"https://github.com/input-output-hk/cardano-node/issues/4929\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4929</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-work-log\">Detailed work log<a class=\"hash-link\" href=\"#detailed-work-log\" title=\"Direct link to heading\">​</a></h2><p>In <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4385\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4385</a> we fixed two bugs in peer state actions.  First one results in\na busy loop if demotion from hot to warm times outs.  This busy loop is\neventually exited when mux exits (we reported this in our previous report).\nThis fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4385\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm\n-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4385\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4385</a> also fixed a bug in a node only used in simulation which\nresulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the\nreview process, we realised that the header-body split in the simulated node\nrequires further work (see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4419\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4419</a>, which is under review).</p><p>The <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4385\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4385</a> also extend our generators, which together with the above fix,\ncover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4419\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays\nsimilar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across\nsimulated restarts) store of blocks which does chain selection.  This ensures\nthat the simulated node is using <code>block-fetch</code> to download blocks announced by\n<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4019</a> - peer sharing.</p><p>We also fixed <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4370\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4370</a> - a connection manager test failure, see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4384\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4384</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-03-02-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-03-02T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-02-24-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the\nimplementation with the specification. More over, they have groomed a plan to\nmake Hydra Mainnet compatible. Also, they continue moving forward with the\ninternal auditing and have published some auditing guidelines to receive\ncontributions from the community.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed <a href=\"https://github.com/input-output-hk/hydra/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a> (what is\nremaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec\n<a href=\"https://github.com/input-output-hk/hydra/issues/720\" target=\"_blank\" rel=\"noopener noreferrer\">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility\n<a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">#713</a> and drafted a\n0.10.0 version</li><li>Added a tutorial by <a href=\"https://github.com/perturbing/\" target=\"_blank\" rel=\"noopener noreferrer\">@perturbing</a> to the\nwebsite <a href=\"https://hydra.family/head-protocol/docs/tutorial/\" target=\"_blank\" rel=\"noopener noreferrer\">LINK</a></li><li>Published auditing guidelines\n<a href=\"https://hydra.family/head-protocol/audit-guidelines\" target=\"_blank\" rel=\"noopener noreferrer\">LINK</a></li><li>Made hydra-node work for macos\n<a href=\"https://github.com/input-output-hk/hydra/issues/746\" target=\"_blank\" rel=\"noopener noreferrer\">#746</a> and added support\nfor building on aarch64\n<a href=\"https://github.com/input-output-hk/hydra/issues/673\" target=\"_blank\" rel=\"noopener noreferrer\">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-24-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-02-24T00:00:00.000Z",
+            "author": {
+                "name": "Franco Testagrossa",
+                "url": "https://github.com/ffakenz"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-02-23-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2306.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2306.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href=\"https://github.com/input-output-hk/mithril/issues/718\" target=\"_blank\" rel=\"noopener noreferrer\">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href=\"https://github.com/input-output-hk/mithril/issues/738\" target=\"_blank\" rel=\"noopener noreferrer\">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href=\"https://github.com/input-output-hk/mithril/issues/740\" target=\"_blank\" rel=\"noopener noreferrer\">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href=\"https://github.com/input-output-hk/mithril/issues/741\" target=\"_blank\" rel=\"noopener noreferrer\">#741</a></li><li>Completed the creation of the signer registration event <a href=\"https://github.com/input-output-hk/mithril/issues/742\" target=\"_blank\" rel=\"noopener noreferrer\">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href=\"https://github.com/input-output-hk/mithril/issues/743\" target=\"_blank\" rel=\"noopener noreferrer\">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href=\"https://github.com/input-output-hk/mithril/issues/707\" target=\"_blank\" rel=\"noopener noreferrer\">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/732\" target=\"_blank\" rel=\"noopener noreferrer\">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href=\"https://github.com/input-output-hk/mithril/issues/755\" target=\"_blank\" rel=\"noopener noreferrer\">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href=\"https://github.com/input-output-hk/mithril/issues/760\" target=\"_blank\" rel=\"noopener noreferrer\">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href=\"https://github.com/input-output-hk/mithril/issues/757\" target=\"_blank\" rel=\"noopener noreferrer\">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href=\"https://github.com/input-output-hk/mithril/issues/730\" target=\"_blank\" rel=\"noopener noreferrer\">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href=\"https://github.com/input-output-hk/mithril/issues/765\" target=\"_blank\" rel=\"noopener noreferrer\">#765</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-23-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-02-23T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-02-23-performance-and-tracing",
+            "content_html": "<ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"secp\">SECP<a class=\"hash-link\" href=\"#secp\" title=\"Direct link to heading\">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO-HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We're currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"1356-release\">1.35.6 release<a class=\"hash-link\" href=\"#1356-release\" title=\"Direct link to heading\">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system's introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nomad-backend\">Nomad backend<a class=\"hash-link\" href=\"#nomad-backend\" title=\"Direct link to heading\">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We're currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nixops-backend\">NixOps backend<a class=\"hash-link\" href=\"#nixops-backend\" title=\"Direct link to heading\">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-23-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "* SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.",
+            "date_modified": "2023-02-23T00:00:00.000Z",
+            "author": {
+                "name": "Michael Karg",
+                "url": "https://github.com/mgmeier"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-02-22-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks\nfor UTxO HD. They showed a substantial performance regression, so we spent some\ntime analyzing the results. We found out the frequency at which ledger snapshots\nwere taken was too high, so we requested the benchmarking team a new run with a\nmore realistic snapshotting policy. We continued refactoring and improving the\nprototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis\ndesign, which was well received. We continued working on testing and\nbenchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work\nderived in several improvements such as better documentation, a framework for\nwriting unit (and regression) tests, and the possibility of debugging\n<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and\n<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD Prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed\nto indicate a significant regression in performance. After looking into the\nbenchmark logs we found that the benchmark runs took ledger state snapshots too\noften, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so\nsmall in the benchmark runs. Therefore, the next step is to re-run the\nbenchmarks with a snapshotting policy that more closely resembles the one from\nmainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,\n<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and\n<code>cardano-lmdb-simple</code>) to <a href=\"https://github.com/input-output-hk/cardano-haskell-packages\" target=\"_blank\" rel=\"noopener noreferrer\">CHaP</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from\nNSol. It was well received. They pointed out one blindspot, but we think it'll\nbe relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis\nprototypes. I particular we tested and implemented a potential fix for\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022\" target=\"_blank\" rel=\"noopener noreferrer\">increased ChainDB dequeue timings</a>, which partly\nbehaved as we expected, but still needs further investigation. Also we obtained\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031\" target=\"_blank\" rel=\"noopener noreferrer\">new benchmarking data</a> for the prototype.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>Related to <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4183\" target=\"_blank\" rel=\"noopener noreferrer\">#4183</a>, we developed a <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4379\" target=\"_blank\" rel=\"noopener noreferrer\">DSL</a> for specifying\n<code>ChainDB</code> unit tests. This will allow us to better understand the\ncounter-examples returned by QuickCheck tests, and to write <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4383\" target=\"_blank\" rel=\"noopener noreferrer\">regression\ntests</a> for them. Also, we <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4358\" target=\"_blank\" rel=\"noopener noreferrer\">added a module</a> to enable\nQuickCheck counter-examples to be run on the REPL, allowing for faster debugging\nfeedback. Also, we improved the documentation related to followers\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4372\" target=\"_blank\" rel=\"noopener noreferrer\">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the\nfuture.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>\n0.3.0.0 to CHaP. Remember that we decided to split the packages related to\nConsensus into two bundles, one with the core functionality, Cardano-agnostic\ncode, and another bundle with instantiations specific to Cardano.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-22-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-22T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-02-22-node-cli-api",
+            "content_html": "<h1>2023-02-22 - 2023-03-07</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>General bug fixes </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4882\" target=\"_blank\" rel=\"noopener noreferrer\">Fix some markdown links</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4881\" target=\"_blank\" rel=\"noopener noreferrer\">Update changelog with PR4788 changes</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4761\" target=\"_blank\" rel=\"noopener noreferrer\">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4636\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4753\" target=\"_blank\" rel=\"noopener noreferrer\">Export SubmitResult from Cardano.Api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4901\" target=\"_blank\" rel=\"noopener noreferrer\">Remove pattern Tx</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"documentation\">Documentation<a class=\"hash-link\" href=\"#documentation\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4949\" target=\"_blank\" rel=\"noopener noreferrer\">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-mainteance\">CI &amp; project mainteance<a class=\"hash-link\" href=\"#ci--project-mainteance\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4932\" target=\"_blank\" rel=\"noopener noreferrer\">New build complete job</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4764\" target=\"_blank\" rel=\"noopener noreferrer\">Update ouroboros-network</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4666\" target=\"_blank\" rel=\"noopener noreferrer\">Read network ID from environment</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4647\" target=\"_blank\" rel=\"noopener noreferrer\">CLI option to append additional signatures to a transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano ping</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4777\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo on oops</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4910\" target=\"_blank\" rel=\"noopener noreferrer\">New --node-socket-path cli option</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4909\" target=\"_blank\" rel=\"noopener noreferrer\">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4880\" target=\"_blank\" rel=\"noopener noreferrer\">Detect invalid counter and certificate</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4823\" target=\"_blank\" rel=\"noopener noreferrer\">Straight line code for tx commands</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">New cardano-cli ping command.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4655\" target=\"_blank\" rel=\"noopener noreferrer\">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4763\" target=\"_blank\" rel=\"noopener noreferrer\">Remove simple script distinction</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4941\" target=\"_blank\" rel=\"noopener noreferrer\">Combinators for TxBodyConŻtent and related types</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4903\" target=\"_blank\" rel=\"noopener noreferrer\">Reduce number of calls to toLedgerPParams</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4825\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo without oops 2</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4911\" target=\"_blank\" rel=\"noopener noreferrer\">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet-1\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4845\" target=\"_blank\" rel=\"noopener noreferrer\">Use Haskell variables for passing values</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4879\" target=\"_blank\" rel=\"noopener noreferrer\">Re-enable kes-period-info test</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3783\" target=\"_blank\" rel=\"noopener noreferrer\">Transaction debug script command</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-22-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-22T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-02-21-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.\nWe also investigated and had the first working UTxO-HD integration which is one\nof the potential future risks for db-sync.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn't\nuse the full on disk storage but keeps things in memory and the plan is to keep\nit this way for the first iteration. The integration still has some performance\nissues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1353\" target=\"_blank\" rel=\"noopener noreferrer\">#1353</a></li><li>Continued with ghc-9.2 integration\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1339\" target=\"_blank\" rel=\"noopener noreferrer\">#1339</a></li><li>Worked on an new fixing procedure for\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1348\" target=\"_blank\" rel=\"noopener noreferrer\">#1348</a>.\nWe try to make these procedures work also on older schema version, without the\nneed to migrate to newer schema, which can be very useful for fixing existing\nsnapshots.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-21-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-21T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-02-17-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril's core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Transmute helpers merged <a href=\"https://github.com/input-output-hk/mithril/pull/722\" target=\"_blank\" rel=\"noopener noreferrer\">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href=\"https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost\" target=\"_blank\" rel=\"noopener noreferrer\">Mithril</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href=\"https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks\" target=\"_blank\" rel=\"noopener noreferrer\">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href=\"https://github.com/input-output-hk/cardano-base/pull/344\" target=\"_blank\" rel=\"noopener noreferrer\">PR#344</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-17-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-17T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-02-17-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been working on drafts of two papers and one\ntechnical report, distributivity properties of deltaQ, and consulting\non performance design with the Marlowe team.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning\npaper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for\ndraft paper about verifying design refinements for distributed\nsystem design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-17-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-02-17T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-02-17-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests\nduring the contestation period. These will now always push out the deadline and\nhence contestation periods are easier to pick (depending on the network a Head\nruns on). Furthermore, they added an important acceptance test and completed\ninternal refactoring of the protocol logic making future changes easier.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Push contestation deadline on each contest <a href=\"https://github.com/input-output-hk/hydra/pull/716\" target=\"_blank\" rel=\"noopener noreferrer\">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href=\"https://github.com/input-output-hk/hydra/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a> into dedicated features</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete full minting policy <a href=\"https://github.com/input-output-hk/hydra/issues/720\" target=\"_blank\" rel=\"noopener noreferrer\">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-17-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-02-17T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-02-17-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>\nand <code>ouroboros-network</code> repositories.\nThe vast majority of the effort involved all the changes to the ledger serialization libraries\n(and the interplay with <code>cardano-base</code>) which now support proper versioning.\nSupporting the conway ledger era, and in particular allowing the ledger state to transition\nto a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the\ndocumentation, make our testing infrastructure better (such as experimenting with better\nnightly tests), and formally specifying more parts of CIP-1694.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"integration-work\">Integration work<a class=\"hash-link\" href=\"#integration-work\" title=\"Direct link to heading\">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from\nthe current ledger master. Many thanks to\n<a href=\"https://github.com/lehins\" target=\"_blank\" rel=\"noopener noreferrer\">Alexey</a> for this colossal undertaking!</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3303\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3303</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3302\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3302</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3300\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3300</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3299\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3299</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3298\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3298</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3297\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3297</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3292\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3292</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3289\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3289</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3288\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3288</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3279\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3279</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3282\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3282</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4349\" target=\"_blank\" rel=\"noopener noreferrer\">pull-4349</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted\nin the CBOR specification. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3241\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by\n<code>cabal format</code> in our CI. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3286\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running\nproperty based tests. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3276\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3276</a> and <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3296\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3296</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"small-documentation-improvements\">Small documentation improvements<a class=\"hash-link\" href=\"#small-documentation-improvements\" title=\"Direct link to heading\">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the\nShelley ledger specification. See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3295\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3290\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3290</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"specifying-cip-1694\">Specifying CIP-1694<a class=\"hash-link\" href=\"#specifying-cip-1694\" title=\"Direct link to heading\">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!\nUpgrading to Agda 2.6.3 fixed our main build infrastructure problems,\nand we no longer have to rely on our custom fork. See <a href=\"https://github.com/input-output-hk/formal-ledger-specifications/pull/50\" target=\"_blank\" rel=\"noopener noreferrer\">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href=\"https://github.com/input-output-hk/formal-ledger-specifications/pull/40\" target=\"_blank\" rel=\"noopener noreferrer\">pull-40</a></li><li>the corresponding Haskell: <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3291\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3291</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"constraint-based-testing\">Constraint based testing<a class=\"hash-link\" href=\"#constraint-based-testing\" title=\"Direct link to heading\">​</a></h3><p>We are still actively working on our new constraint based property testing framework.\nWe have nearly all of the constraints for an entire ledger state\nhooked into generators, and tests that the generators do indeed obey the constraints.\nThe variable count in the constraints is over 100!\nThere is still much work to do on shrinking, making the generators faster,\nand writing actual property tests for the ledger, but the approach still seems viable and\nwe are hopeful that it could replace our trace generators.\nThe WIP can be followed here: <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3219\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3219</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-17-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-17T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-02-17-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one\nfix to <code>1.35.6</code> release, another one will likely be part of next release.  The\nfirst one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These\nbugs could only affect nodes which are out of sync and thus should not impose\nrisk on well maintained nodes on mainnet.  We also advertise to deploy at most\none of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started\nimplementing it (see <a href=\"https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205\" target=\"_blank\" rel=\"noopener noreferrer\">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query\nnetwork protocol versions (see <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4256\" target=\"_blank\" rel=\"noopener noreferrer\">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with\n<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* monoidal-synchronisation-0.1.0.2</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* cardano-client-0.1.0.2</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* network-mux-0.3.0.0</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-api-0.1.0.0</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-testing-0.2.0.1</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-mock-0.1.0.0</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-framework-0.3.0.0</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">* ouroboros-network-0.4.0.0 (it doesn't not yet include the fix we included</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">  in `0.3.0.1`)</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-17-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-17T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2023-02-10-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts\nimplementation further with the specification. This also resulted in a slight\nimprovement on Hydra script size and costs. They consequently analysed the\nasymptotic complexity of collect and fanout and how they relate. Also plutus-tx\nprofiling toolchain was evaluated and set up for future improvements on Hydra\non-chain performance. In discussions with researchers and internal auditors,\nthey also uncovered next steps on further securing the Head protocl using a\n\"full\" minting policy.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href=\"https://github.com/input-output-hk/hydra/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a><ul><li>Allow contest only once <a href=\"https://github.com/input-output-hk/hydra/pull/680\" target=\"_blank\" rel=\"noopener noreferrer\">#680</a></li><li>Optimization through head output at index 0 <a href=\"https://github.com/input-output-hk/hydra/pull/700\" target=\"_blank\" rel=\"noopener noreferrer\">#700</a></li><li>Value is preserved <a href=\"https://github.com/input-output-hk/hydra/pull/702\" target=\"_blank\" rel=\"noopener noreferrer\">#702</a> + optimized exact value equality <a href=\"https://github.com/input-output-hk/hydra/pull/709\" target=\"_blank\" rel=\"noopener noreferrer\">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href=\"https://github.com/input-output-hk/hydra/pull/721\" target=\"_blank\" rel=\"noopener noreferrer\">#721</a><img loading=\"lazy\" src=\"https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png\" class=\"img_ev3q\"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href=\"https://github.com/input-output-hk/hydra/issues/713\" target=\"_blank\" rel=\"noopener noreferrer\">this</a> idea ticket and <a href=\"https://github.com/input-output-hk/hydra/milestone/8\" target=\"_blank\" rel=\"noopener noreferrer\">milestone</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-10-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-02-10T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-02-09-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2304.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2304.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href=\"https://github.com/input-output-hk/mithril/issues/716\" target=\"_blank\" rel=\"noopener noreferrer\">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href=\"https://github.com/input-output-hk/mithril/issues/708\" target=\"_blank\" rel=\"noopener noreferrer\">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href=\"https://github.com/input-output-hk/mithril/issues/709\" target=\"_blank\" rel=\"noopener noreferrer\">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href=\"https://github.com/input-output-hk/mithril/issues/710\" target=\"_blank\" rel=\"noopener noreferrer\">#710</a></li><li>Completed the relational design of the aggregator store <a href=\"https://github.com/input-output-hk/mithril/issues/476\" target=\"_blank\" rel=\"noopener noreferrer\">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href=\"https://github.com/input-output-hk/mithril/issues/729\" target=\"_blank\" rel=\"noopener noreferrer\">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href=\"https://github.com/input-output-hk/mithril/issues/725\" target=\"_blank\" rel=\"noopener noreferrer\">#725</a></li><li>Fixed flakiness in the CI <a href=\"https://github.com/input-output-hk/mithril/issues/734\" target=\"_blank\" rel=\"noopener noreferrer\">#734</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-02-09T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-02-08-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level\nbenchmarks. We have created a new repository that contains the <code>anti-diff</code>\npackages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to\naudit the implementation design, and we continued working on basic tests and\nsimplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR\nencoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD Prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for\nthe system level benchmarks to confirm if the performance of the prototype is\nsatisfactory.</p><p>We also set up a repository for the <a href=\"https://github.com/input-output-hk/anti-diffs\" target=\"_blank\" rel=\"noopener noreferrer\"><code>anti-diff</code></a> package, which\nrequired us to refactor the code, write documentation, and prepare a release to\n<a href=\"https://github.com/input-output-hk/cardano-haskell-packages\" target=\"_blank\" rel=\"noopener noreferrer\">CHaP</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>We worked on <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4347\" target=\"_blank\" rel=\"noopener noreferrer\">basic tests</a> for the <em>Limit on Eagerness</em> property of\nGenesis. We also introduced further robustness and simplifications in the\nGenesis Density governor. Finally, we developed a presentation to engage again\nwith the researchers on our Genesis implementation design.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>We are in the process of <a href=\"https://github.com/input-output-hk/ouroboros-consensus/pull/6\" target=\"_blank\" rel=\"noopener noreferrer\">polishing</a> the <code>ouroboros-consensus</code>\ndocumentation site, which we will use a the entry point for Consensus related\ndocumentation. The first version will not be complete, but we plan on\nsystematically improving it.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4335\" target=\"_blank\" rel=\"noopener noreferrer\">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows\nto dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4339\" target=\"_blank\" rel=\"noopener noreferrer\">another tool</a> that serves an existing immutable DB via\nBlockFetch and ChainSync. This tool can help in assisting our local benchmarking\nefforts (for instance Genesis' ChainSync jumping prototype).</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-08-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-08T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-02-08-node-cli-api",
+            "content_html": "<h1>2023-02-08 - 2023-02-21</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4889\" target=\"_blank\" rel=\"noopener noreferrer\">Remove use of multiline literals</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4775\" target=\"_blank\" rel=\"noopener noreferrer\">Markdown links CI check</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4755\" target=\"_blank\" rel=\"noopener noreferrer\">Date ranges for copyright</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4894\" target=\"_blank\" rel=\"noopener noreferrer\">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4885\" target=\"_blank\" rel=\"noopener noreferrer\">Disallow empty cost model for create update proposal</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4815\" target=\"_blank\" rel=\"noopener noreferrer\">Refactor code using onLeft and onNothing</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4876\" target=\"_blank\" rel=\"noopener noreferrer\">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-mainteance\">CI &amp; project mainteance<a class=\"hash-link\" href=\"#ci--project-mainteance\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4761\" target=\"_blank\" rel=\"noopener noreferrer\">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4636\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4666\" target=\"_blank\" rel=\"noopener noreferrer\">Read network ID from environment</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4647\" target=\"_blank\" rel=\"noopener noreferrer\">CLI option to append additional signatures to a transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano ping</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4777\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo on oops</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4763\" target=\"_blank\" rel=\"noopener noreferrer\">Remove simple script distinction</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4753\" target=\"_blank\" rel=\"noopener noreferrer\">Export SubmitResult from Cardano.Api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet-1\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4845\" target=\"_blank\" rel=\"noopener noreferrer\">Use Haskell variables for passing values</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-08-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-08T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-02-08-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we're currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we've performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we're performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we're redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h2><p>A rework of the new tracing system's internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we'll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-08-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-08T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-02-03-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril's core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href=\"https://github.com/input-output-hk/mithril/pull/722\" target=\"_blank\" rel=\"noopener noreferrer\">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used 'as-a-service'. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it's trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href=\"https://github.com/input-output-hk/cardano-base/pull/341\" target=\"_blank\" rel=\"noopener noreferrer\">PR#341</a> is finally merged, and we are ready to merge <a href=\"https://github.com/input-output-hk/cardano-base/pull/344\" target=\"_blank\" rel=\"noopener noreferrer\">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><p>The GitHub Action <a href=\"https://github.com/fernandrone/linelint\" target=\"_blank\" rel=\"noopener noreferrer\">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-03-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-03T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-02-03-goedel",
+            "content_html": "<p>The team works on applied research and consulting in formal methods\nthat is directly applicable to evidence based engineering in Core Tech\nand beyond.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint the team has been preparing several papers for peer review\nand knowledge sharing and consulting within IO and the community.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"details\">Details<a class=\"hash-link\" href=\"#details\" title=\"Direct link to heading\">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC\n2023 conference</li><li>Finished preparing and submitted a paper on performance engineering\nto an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design\nrefinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-03-goedel",
+            "title": "Goedel Team Update",
+            "summary": "The team works on applied research and consulting in formal methods",
+            "date_modified": "2023-02-03T00:00:00.000Z",
+            "author": {
+                "name": "James Chapman",
+                "url": "https://github.com/jmchapman"
+            },
+            "tags": [
+                "goedel"
+            ]
+        },
+        {
+            "id": "2023-02-03-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about\nrollbacks and updated graphs\n(<a href=\"https://github.com/input-output-hk/hydra/issues/448\" target=\"_blank\" rel=\"noopener noreferrer\">#448</a>). In a next step,\nthe specification will be made more approachable and an open standard. They\nimproved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox\nenvironment and continued aligning the <code>hydra-plutus</code> scripts with the\nspecification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs\n<a href=\"https://github.com/input-output-hk/hydra/issues/448\" target=\"_blank\" rel=\"noopener noreferrer\">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href=\"https://github.com/input-output-hk/hydra/pull/677\" target=\"_blank\" rel=\"noopener noreferrer\">#677</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-03-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-02-03T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-02-02-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Much of the work the past two weeks involved integration efforts,\ncleaning up and debugging some serialization issues,\nadding tests, and work on large projects that are still ongoing.\nWe also released a CIP this week that aims to make the ledger\na registered CIP category.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ledger-evolution-cip\">Ledger evolution CIP<a class=\"hash-link\" href=\"#ledger-evolution-cip\" title=\"Direct link to heading\">​</a></h3><p>We published a\n<a href=\"https://github.com/cardano-foundation/CIPs/pull/456\" target=\"_blank\" rel=\"noopener noreferrer\">CIP</a>\nthat will make the Cardano ledger a registered category of the CIP process.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"serialization-issues\">Serialization issues<a class=\"hash-link\" href=\"#serialization-issues\" title=\"Direct link to heading\">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,\nbut it turned out to just be particularly confusing code.\nWe have now clarified the issue for the future.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3263\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3263</a>, <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3269\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3269</a>, and <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3268\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3277\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3277</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-tests\">New tests<a class=\"hash-link\" href=\"#new-tests\" title=\"Direct link to heading\">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3270\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3270</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"progress-on-a-better-cost-model-serialization-situation\">Progress on a better cost model serialization situation.<a class=\"hash-link\" href=\"#progress-on-a-better-cost-model-serialization-situation\" title=\"Direct link to heading\">​</a></h3><p>We are still working our way through <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2902\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2902</a>.\nTowards this end, we are now properly gating the new flexible encoders\nuntil version 9.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3274\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3274</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"nightly-tests\">Nightly tests<a class=\"hash-link\" href=\"#nightly-tests\" title=\"Direct link to heading\">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3276\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3276</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"constraint-based-generators\">Constraint based generators<a class=\"hash-link\" href=\"#constraint-based-generators\" title=\"Direct link to heading\">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.\nSee the previous ledger update for more information about this project.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-02-02-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-02-02T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-01-27-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,\ncontributors and interested people from the community. The monthly repot for\n<a href=\"https://hydra.family/head-protocol/monthly/2023-01\" target=\"_blank\" rel=\"noopener noreferrer\">January 2023</a> is a digest\nof the things presented and also includes a summary of the meeting. The Hydra\nspecification was getting discussed and the team is incorporating suggested\nchanges of reviewers. Last but not least, they compute and publish script\ninformation on every PR and also on the\n<a href=\"https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary\" target=\"_blank\" rel=\"noopener noreferrer\">website</a>\nnow.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href=\"https://hydra.family/head-protocol/monthly/2023-01\" target=\"_blank\" rel=\"noopener noreferrer\">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href=\"https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary\" target=\"_blank\" rel=\"noopener noreferrer\">website</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-27-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-01-27T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-01-26-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team released a new <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2302.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2302.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href=\"https://github.com/input-output-hk/mithril/issues/688\" target=\"_blank\" rel=\"noopener noreferrer\">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href=\"https://github.com/input-output-hk/mithril/issues/689\" target=\"_blank\" rel=\"noopener noreferrer\">#689</a></li><li>Implement the mechanism for the signature registration <a href=\"https://github.com/input-output-hk/mithril/issues/693\" target=\"_blank\" rel=\"noopener noreferrer\">#693</a></li><li>Implement the mechanism for epoch settings <a href=\"https://github.com/input-output-hk/mithril/issues/695\" target=\"_blank\" rel=\"noopener noreferrer\">#695</a></li><li>Implement the mechanism for certificate pending <a href=\"https://github.com/input-output-hk/mithril/issues/696\" target=\"_blank\" rel=\"noopener noreferrer\">#696</a></li><li>Implement the mechanism for certificate <a href=\"https://github.com/input-output-hk/mithril/issues/697\" target=\"_blank\" rel=\"noopener noreferrer\">#697</a></li><li>Implement the mechanism for snapshots list <a href=\"https://github.com/input-output-hk/mithril/issues/698\" target=\"_blank\" rel=\"noopener noreferrer\">#698</a></li><li>Implement the mechanism for snapshot <a href=\"https://github.com/input-output-hk/mithril/issues/699\" target=\"_blank\" rel=\"noopener noreferrer\">#699</a></li><li>Update enforcement of API version with Semver <a href=\"https://github.com/input-output-hk/mithril/issues/705\" target=\"_blank\" rel=\"noopener noreferrer\">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href=\"https://github.com/input-output-hk/mithril/issues/677\" target=\"_blank\" rel=\"noopener noreferrer\">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href=\"https://github.com/input-output-hk/mithril/issues/678\" target=\"_blank\" rel=\"noopener noreferrer\">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href=\"https://github.com/input-output-hk/mithril/issues/672\" target=\"_blank\" rel=\"noopener noreferrer\">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href=\"https://github.com/input-output-hk/mithril/issues/523\" target=\"_blank\" rel=\"noopener noreferrer\">#523</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-26-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-01-26T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-01-25-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities\naround the UTxO-HD prototype. This is a very important milestone which will\nenable us to run system-level tests and benchmarks, as well as start refactoring\nand cleaning the prototype. Regarding our Genesis workstream, we elaborated a\nroadmap that gives an indication of the remaining work. We also continued our\nwork on benchmarking chain-sync-jumping. We also continued working on improving\nthe way we handle blocks from the future, and advancing the integration of the\nnew VRF and KES crypto.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD Prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough\nconfidence that we will be able to move additional parts of the ledger state\nonto disk. We worked together with the Ledger team to <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4296\" target=\"_blank\" rel=\"noopener noreferrer\">elaborate a\nsketch</a> on how the UTxO-HD design would accommodate the migration of\nadditional data from memory to disk. This gave us enough confidence that the\ncurrent architecture will be extensible in the future.</p><p>On the testing front, we <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4274\" target=\"_blank\" rel=\"noopener noreferrer\">added</a> property-based tests for the UTxO-HD\ntype classes. </p><p>We also <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4289\" target=\"_blank\" rel=\"noopener noreferrer\">enabled disabled components</a>, and addressed several\ntechnical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4269\" target=\"_blank\" rel=\"noopener noreferrer\">#4269</a>), and integrate it\ninto consensus (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4273\" target=\"_blank\" rel=\"noopener noreferrer\">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/7\" target=\"_blank\" rel=\"noopener noreferrer\">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We\nfound a race condition in the LMDB backing store, which <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4283\" target=\"_blank\" rel=\"noopener noreferrer\">we fixed</a>.\nAfter the fix we were able to successfully run these benchmarks. The results\nwere published by <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4295\" target=\"_blank\" rel=\"noopener noreferrer\">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and\nflushing values to disk. The following plot shows the duration of these disk\noperation in relation to the main ledger operations, where we can see that the\ncost of the former are comparatively low. The spike at the beginning of the\ngraph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed\nto disk.</p><p><img loading=\"lazy\" alt=\"UTxO-HD read and flush benchmarks\" src=\"/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png\" width=\"1600\" height=\"800\" class=\"img_ev3q\"></p><p>After months of hard work adding tests for the prototype, we are ready to run\nend-to-end tests on the node, and system level benchmarks. This signals a very\nimportant milestone for the UTxO-HD workstream 🎉.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>We elaborated a <a href=\"https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md\" target=\"_blank\" rel=\"noopener noreferrer\">high-level decomposition</a> of the remaining\nwork for Genesis. We also continued benchmarking the chain-sync-jumping\nhappy-path.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.\n<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3262\" target=\"_blank\" rel=\"noopener noreferrer\">pull\nrequest</a> to facilitate compiling consensus.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-25-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-25T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-01-25-node-cli-api",
+            "content_html": "<h1>2023-01-25 - 2023-02-07</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4853\" target=\"_blank\" rel=\"noopener noreferrer\">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4755\" target=\"_blank\" rel=\"noopener noreferrer\">Copyright updates</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4848\" target=\"_blank\" rel=\"noopener noreferrer\">Remove hlint from nix required CI</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4838\" target=\"_blank\" rel=\"noopener noreferrer\">Remove reconfigure-hlint.sh script</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4837\" target=\"_blank\" rel=\"noopener noreferrer\">Fix hlint warnings</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4833\" target=\"_blank\" rel=\"noopener noreferrer\">Implement ADR-2: Restructure modules for generators</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4803\" target=\"_blank\" rel=\"noopener noreferrer\">Stylish Haskell in CI</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4802\" target=\"_blank\" rel=\"noopener noreferrer\">Revert skip doc in ci</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4800\" target=\"_blank\" rel=\"noopener noreferrer\">Skip CI on doc only changes</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4792\" target=\"_blank\" rel=\"noopener noreferrer\">Skip CI if only changes are documentation</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4776\" target=\"_blank\" rel=\"noopener noreferrer\">Build all of cardano-node in CI</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4766\" target=\"_blank\" rel=\"noopener noreferrer\">Check cabal files in CI</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4785\" target=\"_blank\" rel=\"noopener noreferrer\">Straight line error handling</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4787\" target=\"_blank\" rel=\"noopener noreferrer\">New NodeToClientVersionOf typeclass</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4832\" target=\"_blank\" rel=\"noopener noreferrer\">Remove NoImplicitPrelude from cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4809\" target=\"_blank\" rel=\"noopener noreferrer\">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4808\" target=\"_blank\" rel=\"noopener noreferrer\">Use hoistMaybe</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4788\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo without oops</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4805\" target=\"_blank\" rel=\"noopener noreferrer\">New query stake-snapshot integration test</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4671\" target=\"_blank\" rel=\"noopener noreferrer\">Make leadership-schedule test less flaky</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-mainteance\">CI &amp; project mainteance<a class=\"hash-link\" href=\"#ci--project-mainteance\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4761\" target=\"_blank\" rel=\"noopener noreferrer\">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4636\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4666\" target=\"_blank\" rel=\"noopener noreferrer\">Read network ID from environment</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4647\" target=\"_blank\" rel=\"noopener noreferrer\">CLI option to append additional signatures to a transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano ping</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4777\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo on oops</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4763\" target=\"_blank\" rel=\"noopener noreferrer\">Remove simple script distinction</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4753\" target=\"_blank\" rel=\"noopener noreferrer\">Export SubmitResult from Cardano.Api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet-1\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4845\" target=\"_blank\" rel=\"noopener noreferrer\">Use Haskell variables for passing values</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-25-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-25T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2023-01-20-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href=\"https://github.com/input-output-hk/mithril/pull/675\" target=\"_blank\" rel=\"noopener noreferrer\">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href=\"https://github.com/input-output-hk/cardano-base/pull/341\" target=\"_blank\" rel=\"noopener noreferrer\">PR#341</a></li><li>Plutus team ran <a href=\"https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs\" target=\"_blank\" rel=\"noopener noreferrer\">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we'll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There's been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href=\"https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431\" target=\"_blank\" rel=\"noopener noreferrer\">doing the change</a>, but still the CI is not happy.</li><li>The <a href=\"https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431\" target=\"_blank\" rel=\"noopener noreferrer\">same</a> was needed for the KES agents prerequisites <a href=\"https://github.com/input-output-hk/cardano-base/pull/317\" target=\"_blank\" rel=\"noopener noreferrer\">PR#317</a>.</li><li>We've started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-20-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-20T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-01-20-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1\nspecification. Of which a first version has been aggregated and is currently\nunder review. They aligned the on-chain scripts of reimbursing funds on abort\nlike defined in the specification, improved the mutation test framework to have\nmore control when testing plutus scripts. The added HeadId in the API and the\nTUI example client make <code>hydra-node</code> easier to use and a first experiment of a\nHydra Head explorer was showing the utility of this - see what Heads exist on\nthe <code>preview</code> network <a href=\"http://explorer.hydra.family\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>HeadId to API and display in the TUI <a href=\"https://github.com/input-output-hk/hydra/pull/678\" target=\"_blank\" rel=\"noopener noreferrer\">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href=\"http://explorer.hydra.family\" target=\"_blank\" rel=\"noopener noreferrer\">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href=\"https://github.com/input-output-hk/hydra/pull/679\" target=\"_blank\" rel=\"noopener noreferrer\">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href=\"https://github.com/input-output-hk/hydra/pull/670\" target=\"_blank\" rel=\"noopener noreferrer\">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href=\"https://www.overleaf.com/read/bbqzmptcxryj\" target=\"_blank\" rel=\"noopener noreferrer\">Read it on overleaf</a> (<a href=\"https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md\" target=\"_blank\" rel=\"noopener noreferrer\">Communication channels</a> for feedback)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-20-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-01-20T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-01-20-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking\nteams gave a green light for the release, and we made decent progress with some\nCI problem which we encountered on the way (<a href=\"https://github.com/input-output-hk/cardano-node/pull/4612\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4612</a>). We are also working on\npeer sharing, making improvements in our testing infrastructure, reducing\ntechnical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making\nprogress on Handshake improvements.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator\nonly</code> and <code>initiator and responder</code> nodes. <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4222\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4222</a></p><p>We are now reviewing the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4256\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node\ndied when performing a simultaneous TCP open (a corner case of a corner case!). <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4265\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from\nits methods. <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4260\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes\nreviewing two PRs: <a href=\"https://github.com/input-output-hk/io-sim/pull/57\" target=\"_blank\" rel=\"noopener noreferrer\">PR #57</a> and <a href=\"https://github.com/input-output-hk/io-sim/pull/60\" target=\"_blank\" rel=\"noopener noreferrer\">PR #60</a> as well as writing an announcement\nblog post.  </p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-20-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-20T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network",
+                "release"
+            ]
+        },
+        {
+            "id": "2023-01-20-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing\nsupport for cardano-world.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cicero\">Cicero<a class=\"hash-link\" href=\"#cicero\" title=\"Direct link to heading\">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tullia\">Tullia<a class=\"hash-link\" href=\"#tullia\" title=\"Direct link to heading\">​</a></h3><ul><li>Made it easier to support cloning from a PR's fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href=\"https://github.com/hashicorp/nomad/issues/12877\" target=\"_blank\" rel=\"noopener noreferrer\">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bitte\">Bitte<a class=\"hash-link\" href=\"#bitte\" title=\"Direct link to heading\">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href=\"https://colmena.cli.rs\" target=\"_blank\" rel=\"noopener noreferrer\">Colmena</a> for deploys instead of <a href=\"https://github.com/serokell/deploy-rs\" target=\"_blank\" rel=\"noopener noreferrer\">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href=\"https://github.com/yaxitech/ragenix\" target=\"_blank\" rel=\"noopener noreferrer\">ragenix</a> instead of <a href=\"https://github.com/Mic92/sops-nix\" target=\"_blank\" rel=\"noopener noreferrer\">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-world\">cardano-world<a class=\"hash-link\" href=\"#cardano-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bitte-world\">bitte-world<a class=\"hash-link\" href=\"#bitte-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci-world\">ci-world<a class=\"hash-link\" href=\"#ci-world\" title=\"Direct link to heading\">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-20-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-20T00:00:00.000Z",
+            "author": {
+                "name": "Michael Fellinger",
+                "url": "https://github.com/manveru"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2023-01-19-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694\n(restructuring the ledger state),\nfixed the PDF hosting problem (mostly the formal specs),\nbuilt out more of the new user-friendly ledger API,\nfinished a proof of concept for constraint-based generators for property tests\n(with the hopes of being able to replace our trace generators one day),\nand addressed technical debt.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"restructuring-the-ledger-state\">Restructuring the ledger state<a class=\"hash-link\" href=\"#restructuring-the-ledger-state\" title=\"Direct link to heading\">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,\nas described in CIP-1694.\nIn particular, the ledger rules will be restructured as follows:</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">   BBODY</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    |-------------------------------|</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    v                               v</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">   TICK                            LEDGERS</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    |                               |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    |---------|                     |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    v         v                     v</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              |                     |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              |----------|          |--------|-------------------|-----------|</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              v          v                   v                   v           v</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              |                              |                   |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              |---------|------------|       v                   |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">              v         v            v      DELPL                v</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">                                             |--------|          |</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">                                             v        v          v</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\" style=\"display:inline-block\"></span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">-..- Removed</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">+..+ Added</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">~..~ Modified</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.\nIn the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.\nWe have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3216\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3216</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"pdf-hosting\">PDF hosting<a class=\"hash-link\" href=\"#pdf-hosting\" title=\"Direct link to heading\">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag\nwith a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.\nThe action creates a GitHub release containing the PDFs.\nThe links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3245\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3245</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3260\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3260</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"powering-the-new-ledger-api\">Powering the new ledger API<a class=\"hash-link\" href=\"#powering-the-new-ledger-api\" title=\"Direct link to heading\">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,\nand replaced them with lenses.\nThis is probably the last major restructuring that the ledger team will do on the code base\nfor the API for a while\n(the Plutus tools team will be working on it next, see <a href=\"https://github.com/input-output-hk/cardano-ledger/projects/5\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>).\nWe also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3242\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3242</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3248\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3248</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"constraint-based-generators\">Constraint-based generators<a class=\"hash-link\" href=\"#constraint-based-generators\" title=\"Direct link to heading\">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks\nwhich span several epochs, mimicking a real network.\nThese tests are, in theory, excellent for checking properties.\nThey are, however, very difficult to maintain and are not as random as we would like\n(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative\nof not just an initial state, generate a single random valid block, and then test our properties.\nThe hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3219\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3219</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3244\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3244</a> massive CI speedup</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3249\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3249</a> better types for fees in the protocol parameters</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3264\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3239\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-19-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-19T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2023-01-14-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused\nthe last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the\nnew leger core and ghc-9.2.4</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Integrate CHaP\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1331\" target=\"_blank\" rel=\"noopener noreferrer\">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1332\" target=\"_blank\" rel=\"noopener noreferrer\">#1332</a></li><li>Technical debt: Add code formatter fourmolu\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1334\" target=\"_blank\" rel=\"noopener noreferrer\">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-14-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-14T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2023-01-13-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the\ntechnical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique\n<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to\nexplicitly synchronize from genesis (if configured), and fixed smaller log and\nbuild issues reported by new users.</p><p>Besides this, a retrospective <a href=\"https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/\" target=\"_blank\" rel=\"noopener noreferrer\">blog\npost</a>\nwas published by Matthias Benkort (CF) on Hydra, summarizing our progress made\nin 2022 also an outlook where Hydra is headed for in 2023. Also, the team had\nsome first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href=\"https://hydra.family/head-protocol/monthly/2022-12\" target=\"_blank\" rel=\"noopener noreferrer\">hydra\nwebsite</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href=\"https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/\" target=\"_blank\" rel=\"noopener noreferrer\">blog\npost</a>\nby Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also\nan outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href=\"https://github.com/ch1bo/hydra-spec\" target=\"_blank\" rel=\"noopener noreferrer\">latest\nversion in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href=\"https://hydra.family/head-protocol/adr/21/\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-13-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2023-01-13T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2023-01-13-release",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-reelease-update\">Node Reelease Update<a class=\"hash-link\" href=\"#node-reelease-update\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"2022-11-02---2023-01-13\">2022-11-02 - 2023-01-13<a class=\"hash-link\" href=\"#2022-11-02---2023-01-13\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive Summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on\n<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.\nThis work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4\" target=\"_blank\" rel=\"noopener noreferrer\">Release 1.35.4</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><p><a href=\"https://github.com/input-output-hk/cardano-node/commits/release/1.35\" target=\"_blank\" rel=\"noopener noreferrer\">Release 1.35.5</a></p><ul><li><a href=\"https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst\" target=\"_blank\" rel=\"noopener noreferrer\">Test Status</a></li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-13-release",
+            "title": "Node Release Team Update",
+            "summary": "Node Reelease Update",
+            "date_modified": "2023-01-13T00:00:00.000Z",
+            "author": {
+                "name": "Samuel Leathers",
+                "url": "https://github.com/disassembler"
+            },
+            "tags": [
+                "release"
+            ]
+        },
+        {
+            "id": "2023-01-13-system-test",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single\nRelay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"framework-improvements\">Framework improvements:<a class=\"hash-link\" href=\"#framework-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href=\"https://input-output-hk.github.io/cardano-node-tests/readme.html\" target=\"_blank\" rel=\"noopener noreferrer\">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href=\"https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html\" target=\"_blank\" rel=\"noopener noreferrer\">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===\n  to\n  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node\">Node:<a class=\"hash-link\" href=\"#node\" title=\"Direct link to heading\">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href=\"https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst\" target=\"_blank\" rel=\"noopener noreferrer\">details here</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"db-sync\">DB-Sync:<a class=\"hash-link\" href=\"#db-sync\" title=\"Direct link to heading\">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-13-system-test",
+            "title": "System Test Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-13T00:00:00.000Z",
+            "author": {
+                "name": "Dorin Solomon",
+                "url": "https://github.com/dorin100"
+            },
+            "tags": [
+                "system-test"
+            ]
+        },
+        {
+            "id": "2023-01-12-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href=\"https://mithril.network/doc/adr/4\" target=\"_blank\" rel=\"noopener noreferrer\">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href=\"https://github.com/input-output-hk/mithril/issues/671\" target=\"_blank\" rel=\"noopener noreferrer\">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href=\"https://github.com/input-output-hk/mithril/issues/677\" target=\"_blank\" rel=\"noopener noreferrer\">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href=\"https://github.com/input-output-hk/mithril/issues/678\" target=\"_blank\" rel=\"noopener noreferrer\">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href=\"https://github.com/input-output-hk/mithril/issues/672\" target=\"_blank\" rel=\"noopener noreferrer\">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href=\"https://github.com/input-output-hk/mithril/issues/523\" target=\"_blank\" rel=\"noopener noreferrer\">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease\" target=\"_blank\" rel=\"noopener noreferrer\">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href=\"https://github.com/input-output-hk/mithril/issues/681\" target=\"_blank\" rel=\"noopener noreferrer\">#681</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-12-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2023-01-12T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2023-01-11-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During\nthese weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and\ndiscussing with the Ledger team the changes that might be required for the next\niterations. The pull request that adds the Conway era is waiting for a second\nreview round and we hope to merge it soon. On the technical debt side we are\nlooking into a property-test failure found in the iterators. We are\ninvestigating if this is an error in the model or in the implementation. We also\nimproved the documentation of our testing code.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD Prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.\nThe Ledger team is concerned that for the remaining maps we might need the full\nledger state on epoch boundaries. Since the main consumer of the ledger rules is\nConsensus, the code that requires access to a full state could be moved from the\nledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take\nplace in such bridge, instead of querying the ledger for the values that are\nrequired in the epoch-transition computations.</p><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4234\" target=\"_blank\" rel=\"noopener noreferrer\">relocated</a> some UTxO-HD definitions, in preparation for merging\nthe prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory\nconsumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely\nreaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The\nin-memory backend is about 30 minutes faster, but still slower than the baseline\nversion. We are aware of this phenomenon and it is inherent to the problem of\nmaintaining sequences of differences of the last <code>k</code> ledger states that allows\nus to perform rollback and roll-forward. We are in the process of measuring\nsyncing from scratch times.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png\" width=\"2500\" height=\"1700\" class=\"img_ev3q\"></p><p>We also <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">added <code>StaticEither</code> accessors</a> that helped us to simplify\nthe UTxO-HD prototype.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-conway-era\">New Conway era<a class=\"hash-link\" href=\"#new-conway-era\" title=\"Direct link to heading\">​</a></h3><p>We incorporated the feedback of the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3971\" target=\"_blank\" rel=\"noopener noreferrer\">pull request</a>, and rebased this\nbranch on top of <code>master</code>. The PR is pending a second review round and we hope\nto merge this soon.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We are investigating a <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4183\" target=\"_blank\" rel=\"noopener noreferrer\">property-testing failure</a> involving\niterators. Solving this requires understanding the expected behavior of\niterators in the counterexample found by <code>QuickCheck</code> to determine if the error\nis in the model or in the implementation.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4248\" target=\"_blank\" rel=\"noopener noreferrer\">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the\nexplanations about the tests are easier to find in the relevant modules, and the\ndocumentation is easier to keep up to date.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-11-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-11T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2023-01-11-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we're now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we've made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we've started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h2><p>The improved tracing internals were implemented, and we're now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.\nWe now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.\nOnce this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-11-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-11T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2023-01-06-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: The API features (error handling) has been merged. </li><li>Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href=\"https://github.com/input-output-hk/musig2/pull/33\" target=\"_blank\" rel=\"noopener noreferrer\">PR#33</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href=\"https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d\" target=\"_blank\" rel=\"noopener noreferrer\">Version 0.1.1</a>, which was published in <a href=\"https://crates.io/crates/kes-summed-ed25519\" target=\"_blank\" rel=\"noopener noreferrer\">crates.io</a>. </li><li>Updated new KES format to mithril library <a href=\"https://github.com/input-output-hk/mithril/pull/674\" target=\"_blank\" rel=\"noopener noreferrer\">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href=\"https://github.com/input-output-hk/mithril/pull/531\" target=\"_blank\" rel=\"noopener noreferrer\">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href=\"https://github.com/input-output-hk/iohk-nix/pull/520\" target=\"_blank\" rel=\"noopener noreferrer\">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href=\"https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518\" target=\"_blank\" rel=\"noopener noreferrer\">PR#255</a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cryptography-handbook\">Cryptography handbook<a class=\"hash-link\" href=\"#cryptography-handbook\" title=\"Direct link to heading\">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href=\"https://input-output-hk.github.io/cryptography_spec/\" target=\"_blank\" rel=\"noopener noreferrer\">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-06-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-06T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2023-01-05-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,\nbuilt out the new Conway era transaction body (in line with CIP-1694),\ngreatly reduce some problematically large calculations on the epoch boundary,\nand addressed technical debt.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"finishing-the-deposit-tracking\">Finishing the deposit tracking<a class=\"hash-link\" href=\"#finishing-the-deposit-tracking\" title=\"Direct link to heading\">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.\nAs this is a large data structure\n(since its size is linear with respect to the number of registered stake credentials),\nit is very important that we also reduce the memory overhead as much as possible.\nFortunately, we were able to add very little overhead for the deposits by using existing\nefficient data structures. The extra tracking now only incurs one word (8 bytes)\nper registered stake credential.</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3195\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3195</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3202\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3202</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3217\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3217</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-conway-era-transaction\">New Conway era transaction<a class=\"hash-link\" href=\"#new-conway-era-transaction\" title=\"Direct link to heading\">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.\nNote that the Conway era implements, losing speaking, the parts of CIP-1694 that are not\nrelated to the liquid democracy (the \"DReps\").\nThe new transaction body adds the new governance actions and votes,\nwhile also deprecating the old governance structures\n(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.\nThe wire specification is still subject to change while we work on the Conway era,\nbut it is now usable and has proper testing support\n(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3176\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3176</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3226\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3226</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"optimizing-the-tickf-transition\">Optimizing the <code>TICKF</code> transition<a class=\"hash-link\" href=\"#optimizing-the-tickf-transition\" title=\"Direct link to heading\">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load\nplaced on the node by the ledger at the epoch boundary.\nWhile still not perfect, we believe that we have removed one of the final problematically long\nepoch boundary computations that exacerbate situations like\n<a href=\"https://github.com/input-output-hk/cardano-node/issues/4421\" target=\"_blank\" rel=\"noopener noreferrer\">this</a>.\nIn particular, the problem involved the way in which the consensus layer obtains a view of the\nledger for the purposes of checking the leadership schedule in a new epoch.\nWe implemented a stopgap measure which now only incurs a single multi-second cost once per epoch\ninstead of potentially several multi-second costs while the networks waits for the first block\nof a new epoch to be minted.</p><p>See:</p><ul><li>An <a href=\"https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR</a> about the decision.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3209\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3209</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improved-ledger-event\">Improved ledger event<a class=\"hash-link\" href=\"#improved-ledger-event\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3212\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.\nFor this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now\nincludes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"improved-type-saftey\">Improved type saftey<a class=\"hash-link\" href=\"#improved-type-saftey\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3208\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR\nencoders and decoders were using the wrong level of precision, having to due with with\nthe Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3167\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types\nfor <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"codemodule-organization\">Code/Module organization<a class=\"hash-link\" href=\"#codemodule-organization\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3175\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,\ndue to the uncertainly of release dates while we were implementing them.\nIn particular, they were coupled in way that is different from the rest of the code base.\nWith hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two\nseparate ledger era packages, which is now consistent with the rest of the repository\nand module structure.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3184\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test\ngenerator code.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3210\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,\nthe ledger does not need to deal with signing keys, and since this is a topic that\ndeserves the utmost care, it is best to make it clear that our use of signing keys\nis only for testing.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3229\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest\nof the codebase.</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"revert-pointer-address-deprecation\">Revert pointer address deprecation<a class=\"hash-link\" href=\"#revert-pointer-address-deprecation\" title=\"Direct link to heading\">​</a></h4><p>Thanks to one of our excellent internal auditors,\n<a href=\"https://github.com/jmhrpr\" target=\"_blank\" rel=\"noopener noreferrer\">@jmhrpr</a>,\nwe now have a better plan for deprecating pointer addresses.\nThis meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3161\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3161</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3215\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3215</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"miscellaneous\">Miscellaneous<a class=\"hash-link\" href=\"#miscellaneous\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3205\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3218\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3223\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3222\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,\nreducing many constraints.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3224\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3170\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3172\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3225\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3225</a> - We switch from <a href=\"https://hackage.haskell.org/package/ormolu\" target=\"_blank\" rel=\"noopener noreferrer\">ormolu</a> to\n<a href=\"https://hackage.haskell.org/package/fourmolu\" target=\"_blank\" rel=\"noopener noreferrer\">fourmolu</a>.\nThe reason was to be able to finally have more diff friendly code!</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2023-01-05-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2023-01-05T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-12-28-node-cli-api",
+            "content_html": "<h1>2022-12-28 - 2023-01-10</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4762\" target=\"_blank\" rel=\"noopener noreferrer\">Fix hedgehog-extras sha hash</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4759\" target=\"_blank\" rel=\"noopener noreferrer\">Update hegehog-extras bounds</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4751\" target=\"_blank\" rel=\"noopener noreferrer\">GitHub token fix</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4743\" target=\"_blank\" rel=\"noopener noreferrer\">Use setup-haskell action</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4738\" target=\"_blank\" rel=\"noopener noreferrer\">Use Github Action to install libsecp256k1</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4714\" target=\"_blank\" rel=\"noopener noreferrer\">Update index state and hedgehog-extras.</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4710\" target=\"_blank\" rel=\"noopener noreferrer\">Cleaned cabal files</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4737\" target=\"_blank\" rel=\"noopener noreferrer\">Add cache versioning</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4742\" target=\"_blank\" rel=\"noopener noreferrer\">Delete obsolete scripts</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4746\" target=\"_blank\" rel=\"noopener noreferrer\">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4749\" target=\"_blank\" rel=\"noopener noreferrer\">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4754\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake-snapshot command</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-mainteance\">CI &amp; project mainteance<a class=\"hash-link\" href=\"#ci--project-mainteance\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4755\" target=\"_blank\" rel=\"noopener noreferrer\">Copyright updates</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4761\" target=\"_blank\" rel=\"noopener noreferrer\">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4636\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4666\" target=\"_blank\" rel=\"noopener noreferrer\">Read network ID from environment</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4647\" target=\"_blank\" rel=\"noopener noreferrer\">CLI option to append additional signatures to a transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano ping</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4777\" target=\"_blank\" rel=\"noopener noreferrer\">Better error message for query utxo on oops</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4763\" target=\"_blank\" rel=\"noopener noreferrer\">Remove simple script distinction</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4753\" target=\"_blank\" rel=\"noopener noreferrer\">Export SubmitResult from Cardano.Api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet-1\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4845\" target=\"_blank\" rel=\"noopener noreferrer\">Use Haskell variables for passing values</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-28-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-28T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-12-16-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href=\"https://hydra.family/head-protocol/benchmarks/transaction-cost/\" target=\"_blank\" rel=\"noopener noreferrer\">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href=\"https://github.com/input-output-hk/hydra/issues/631\" target=\"_blank\" rel=\"noopener noreferrer\">#631</a>.</li><li>Recorded decision to use model-based testing (<a href=\"https://hydra.family/head-protocol/adr/22/\" target=\"_blank\" rel=\"noopener noreferrer\">ADR22</a>) and improved Model <a href=\"https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html\" target=\"_blank\" rel=\"noopener noreferrer\">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href=\"https://github.com/input-output-hk/hydra/issues/194\" target=\"_blank\" rel=\"noopener noreferrer\">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href=\"https://github.com/input-output-hk/hydra/issues/656\" target=\"_blank\" rel=\"noopener noreferrer\">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href=\"https://github.com/input-output-hk/hydra/pull/646\" target=\"_blank\" rel=\"noopener noreferrer\">#646</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Push <a href=\"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-16-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-12-16T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-12-15-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team has released the new distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2248.1\" target=\"_blank\" rel=\"noopener noreferrer\"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href=\"https://crates.io/crates/mithril-stm\" target=\"_blank\" rel=\"noopener noreferrer\"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node's multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href=\"https://github.com/input-output-hk/mithril/issues/619\" target=\"_blank\" rel=\"noopener noreferrer\">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href=\"https://github.com/input-output-hk/mithril/issues/642\" target=\"_blank\" rel=\"noopener noreferrer\">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href=\"https://github.com/input-output-hk/mithril/issues/638\" target=\"_blank\" rel=\"noopener noreferrer\">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href=\"https://github.com/input-output-hk/mithril/issues/601\" target=\"_blank\" rel=\"noopener noreferrer\">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href=\"https://github.com/input-output-hk/mithril/issues/587\" target=\"_blank\" rel=\"noopener noreferrer\">#587</a></li><li>Fixed the protocol parameters transition <a href=\"https://github.com/input-output-hk/mithril/issues/627\" target=\"_blank\" rel=\"noopener noreferrer\">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href=\"https://github.com/input-output-hk/mithril/issues/510\" target=\"_blank\" rel=\"noopener noreferrer\">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href=\"https://github.com/input-output-hk/mithril/issues/633\" target=\"_blank\" rel=\"noopener noreferrer\">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href=\"https://github.com/input-output-hk/mithril/issues/621\" target=\"_blank\" rel=\"noopener noreferrer\">#621</a></li><li>Worked on the re-genesis of the test networks <a href=\"https://github.com/input-output-hk/mithril/issues/651\" target=\"_blank\" rel=\"noopener noreferrer\">#651</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-15-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2022-12-15T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2022-12-14-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the\nbacking store and Mempool on the UTxO-HD branch with important discoveries\nregarding parallel QSM testing. We also worked with the Ledger team to envisage\nthe modifications that are required in Ledger and Consensus to accommodate the\nchanges in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking\nthe ledger operations, which will allow us to identify, debug, and profile\npotential performance problems. We drafted a document that defines how to manage\nthe versions of Consensus-related packages. The top level documentation of\n<code>ouroboros-network</code> now features a description of the consensus components and\nprovides a hyperlinked map to the modules documentation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the\nparallel case proved to be more challenging than we thought. The operation of\nadding a list of transactions to the mempool is not atomic and, as a result,\nwhen adding a list of transactions, transactions from other processes can be\nadded in between. The mempool implementation handles this correctly, however\nthis required us to <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4076\" target=\"_blank\" rel=\"noopener noreferrer\">redesign</a> the parallel model we had to take\nthe lack of atomicity into account.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"backing-store-property-tests\">Backing store property tests<a class=\"hash-link\" href=\"#backing-store-property-tests\" title=\"Direct link to heading\">​</a></h4><p>We finished refactoring the backing store property tests. The second review\nround is ongoing.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lsm-tree-implementation\">LSM tree implementation<a class=\"hash-link\" href=\"#lsm-tree-implementation\" title=\"Direct link to heading\">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)\nfetching/looking up data from disk.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis\ndesign related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely\ndelineates a fundamental component. We almost have a full Haskell prototype of\nit. It will be very nicely self-contained, perhaps even usable in the ultimate\nimplementation!</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-vrf-and-kes-crypto-integration\">New VRF and KES crypto integration<a class=\"hash-link\" href=\"#new-vrf-and-kes-crypto-integration\" title=\"Direct link to heading\">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto\ntypes to avoid huge allocation on the epoch boundary when changing aspects of\nthe crypto that will only manifest in headers, not in the ledger states.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We merged the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4014\" target=\"_blank\" rel=\"noopener noreferrer\">pull-request</a> that adds a support to <code>db-analyser</code> for\nbenchmarking ledger operations. This will allow us to identify, debug, and\nprofile potential performance problems. The benchmark focus on the main 5 ledger\noperations that are involved in chain syncing, block forging, and block\nvalidation, namely:</p><ol start=\"0\"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65\nmillion blocks (approximately) of the Cardano chain. The thin yellow lines under\nthe x-axis show the epoch boundaries, whereas the thick yellow lines correspond\nto the era transitions.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png\" width=\"1600\" height=\"800\" class=\"img_ev3q\"></p><p>As we can see in this figure, era and epoch boundaries require more computation\ntime. The ledger team are aware of this problem, and we are working to improve\nthis situation.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4207\" target=\"_blank\" rel=\"noopener noreferrer\">drafted a document</a> motivating and defining how Consensus (and\npossibly other core teams) will/should manage our package versions. This\npull-request garnered many great discussions from our team members and other\nteams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et\nal. We want to thank you all for your input, and we found this discussion very\nenlightening!</p><p>We merged the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4197\" target=\"_blank\" rel=\"noopener noreferrer\">pull request</a> that adds an overview of consensus to\nthe <a href=\"https://input-output-hk.github.io/ouroboros-network/\" target=\"_blank\" rel=\"noopener noreferrer\">top level\ndocumentation</a> of\nouroboros-network. This overview describes the consensus components and adds a\nhyperlinked map to the modules documentation.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-14-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-14T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-12-14-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have\nbeen found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses\nreverse indexes, same as the release\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1320\" target=\"_blank\" rel=\"noopener noreferrer\">#1320</a>\nThis also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1324\" target=\"_blank\" rel=\"noopener noreferrer\">#1324</a></li><li>AdaPots fix <a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1323\" target=\"_blank\" rel=\"noopener noreferrer\">#1323</a>. This\nfixes an issue where the per epoch AdaPots didn't match the epoch boundary, but\nthey also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3212\" target=\"_blank\" rel=\"noopener noreferrer\">#3212</a>. This pr\nadjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the\nnumber of queries that db-sync does during syncing an make syncing faster.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-14-db-sync",
+            "title": "DB-sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-14T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2022-12-14-node-cli-api",
+            "content_html": "<h1>2022-12-14 - 2022-12-27</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4703\" target=\"_blank\" rel=\"noopener noreferrer\">Move style guide to wiki</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-maintenance\">CI &amp; project maintenance<a class=\"hash-link\" href=\"#ci--project-maintenance\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4734\" target=\"_blank\" rel=\"noopener noreferrer\">Cache secp256k1</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4717\" target=\"_blank\" rel=\"noopener noreferrer\">Use cabal-cache</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4699\" target=\"_blank\" rel=\"noopener noreferrer\">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4724\" target=\"_blank\" rel=\"noopener noreferrer\">Update cabal.project</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"developer-experience\">Developer experience<a class=\"hash-link\" href=\"#developer-experience\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4125\" target=\"_blank\" rel=\"noopener noreferrer\">Add aarch64-darwin to nix-shell</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4626\" target=\"_blank\" rel=\"noopener noreferrer\">Improved error message for failed asset name decode</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4700\" target=\"_blank\" rel=\"noopener noreferrer\">Remove cardano-cli address build-script</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4698\" target=\"_blank\" rel=\"noopener noreferrer\">Move signing key reading to cardano-api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4712\" target=\"_blank\" rel=\"noopener noreferrer\">Only run chairman test on latest era</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4679\" target=\"_blank\" rel=\"noopener noreferrer\">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ci--project-mainteance\">CI &amp; project mainteance<a class=\"hash-link\" href=\"#ci--project-mainteance\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4755\" target=\"_blank\" rel=\"noopener noreferrer\">Copyright updates</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4179\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake snapshot command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4666\" target=\"_blank\" rel=\"noopener noreferrer\">Read network ID from environment</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4647\" target=\"_blank\" rel=\"noopener noreferrer\">CLI option to append additional signatures to a transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4664\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano ping</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet-1\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4636\" target=\"_blank\" rel=\"noopener noreferrer\">Cleanup exports of cardano-testnet</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-14-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-14T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-12-14-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we've planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we're continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we'll be running the model cluster workload.</p><p>We've also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we've done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that's also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it's the fair benchmark, because that's the way we expect SPO's to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we've established the performance of the new system to be adequate for the release, we won't be delaying it much further.</p><p>In addition, we're still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we've also improved provenance of the raw data, by collecting more identification information and statistics about it.\nThis means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.\nThis will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.\nPreviously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)\nNaturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-14-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-14T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2022-12-12-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at\n<a href=\"https://sites.uclouvain.be/OPODIS2022/\" target=\"_blank\" rel=\"noopener noreferrer\">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related\npackages on Hackage (<a href=\"https://github.com/input-output-hk/io-sim/pull/57\" target=\"_blank\" rel=\"noopener noreferrer\">PR #57</a>, <a href=\"https://github.com/input-output-hk/io-sim/pull/60\" target=\"_blank\" rel=\"noopener noreferrer\">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>\nrepositories for open-source readiness (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4218\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol\nversiones are serialised in <code>cardano-node</code> log (<a href=\"https://github.com/input-output-hk/cardano-node/pull/4691\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4691</a>).</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-12-network",
+            "title": "Network Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-12T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network",
+                "release"
+            ]
+        },
+        {
+            "id": "2022-12-09-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href=\"https://github.com/input-output-hk/musig2/pull/33\" target=\"_blank\" rel=\"noopener noreferrer\">PR#33</a></li><li>We merged the API redesig <a href=\"https://github.com/input-output-hk/musig2/pull/35\" target=\"_blank\" rel=\"noopener noreferrer\">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We'll probably circle back to this in the future <a href=\"https://github.com/input-output-hk/musig2/pull/36\" target=\"_blank\" rel=\"noopener noreferrer\">PR#36</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>We merged the individual signature <a href=\"https://github.com/input-output-hk/mithril/pull/620\" target=\"_blank\" rel=\"noopener noreferrer\">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href=\"https://github.com/input-output-hk/kes/commits/master\" target=\"_blank\" rel=\"noopener noreferrer\">kes repo</a>) </li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href=\"https://gitlab.haskell.org/ghc/ghc/-/issues/22564\" target=\"_blank\" rel=\"noopener noreferrer\">bug in GHC</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href=\"https://github.com/input-output-hk/cardano-base/pull/255\" target=\"_blank\" rel=\"noopener noreferrer\">PR#255</a></li><li>Fixed a 'use-after-free' bug in the KES agent.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-09-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-09T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2022-12-09-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has worked on completing to \"Validate coordinated head protocol against formal model\", this is a huge step to verify the implementation is secure. They also worked on implementing <a href=\"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a> related to bounded tx validity which is now under review. <a href=\"https://github.com/obsidiansystems/hydra-pay\" target=\"_blank\" rel=\"noopener noreferrer\">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href=\"https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue\" target=\"_blank\" rel=\"noopener noreferrer\">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Document model based testing <a href=\"https://github.com/input-output-hk/hydra/issues/194\" target=\"_blank\" rel=\"noopener noreferrer\">#194</a> &amp; <a href=\"https://github.com/input-output-hk/hydra/issues/641\" target=\"_blank\" rel=\"noopener noreferrer\">#641</a></li><li>Got <a href=\"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href=\"https://github.com/input-output-hk/hydra/issues/634\" target=\"_blank\" rel=\"noopener noreferrer\">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock \"the RFP prepared for the external audit\" <a href=\"https://github.com/input-output-hk/hydra/issues/606\" target=\"_blank\" rel=\"noopener noreferrer\">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href=\"https://github.com/input-output-hk/hydra/issues/630\" target=\"_blank\" rel=\"noopener noreferrer\">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href=\"https://github.com/input-output-hk/hydra/issues/642\" target=\"_blank\" rel=\"noopener noreferrer\">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href=\"https://github.com/input-output-hk/hydra/issues/631\" target=\"_blank\" rel=\"noopener noreferrer\">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Get <a href=\"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-09-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-12-09T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-12-09-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly\n<code>cardano-ledger-api</code> package!\nA <a href=\"https://github.com/input-output-hk/cardano-ledger/projects/5\" target=\"_blank\" rel=\"noopener noreferrer\">GitHub project</a>\nwill be filled out in the days ahead,\npeople interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using\n<a href=\"https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md\" target=\"_blank\" rel=\"noopener noreferrer\">architectural decision records</a>\nto leave a record of important decisions that the team makes.\nWe will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.\nWe are prioritizing correctness with our first pull request, and will follow up with\nperformance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.\nSee <a href=\"https://github.com/cardano-foundation/CIPs/pull/374\" target=\"_blank\" rel=\"noopener noreferrer\">CPS-0002</a>\nfor more context.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-ledger-api\">Cardano ledger API<a class=\"hash-link\" href=\"#cardano-ledger-api\" title=\"Direct link to heading\">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it\nout and adding much needed documentation.\nThey have also added doctests!\nIn the days to come, the Plutus tools team will map out a lot more work for the API and record\nit in this\n<a href=\"https://github.com/input-output-hk/cardano-ledger/projects/5\" target=\"_blank\" rel=\"noopener noreferrer\">GitHub project</a>.</p><p>See</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3182\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3182</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3188\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3188</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"architectural-decision-records-adrs\">Architectural Decision Records (ADRs)<a class=\"hash-link\" href=\"#architectural-decision-records-adrs\" title=\"Direct link to heading\">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made\nin the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3177\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3177</a> (rendered <a href=\"https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>)</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracking-individual-deposits\">Tracking individual deposits<a class=\"hash-link\" href=\"#tracking-individual-deposits\" title=\"Direct link to heading\">​</a></h4><p>See <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3190/files\" target=\"_blank\" rel=\"noopener noreferrer\">ADR-3</a>\nfor background.\nWe now have the logic in place to track individual deposits, and a host of property tests\nto make sure that the logic is correct.\nThe current implementation uses more memory than it needs to, and we will address that next,\nwith our hope being to only use one word (8 bytes) per registered stake credential.\nThere is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3127\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3127</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3195\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3195</a></li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3202\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3202</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"removing-pointer-addresses\">Removing pointer addresses<a class=\"hash-link\" href=\"#removing-pointer-addresses\" title=\"Direct link to heading\">​</a></h4><p>Pointer addresses, which have never seen any real use\n(there are something like eleven on mainnet), are being deprecated starting at Cardano major\nversion 9.\n<a href=\"https://github.com/cardano-foundation/CIPs/pull/374\" target=\"_blank\" rel=\"noopener noreferrer\">CPS-0002</a> gives the context.\nWe are disabling them by first preventing transaction outputs containing them\nfrom being serialized by the node at the moment we switch to version 9.\nAt the hard fork after that, we will translate the existing few pointer addresses\nto enterprise addresses.</p><p>See</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3174\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3174</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3162\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never\nbe exercised. After we have passed the given hardfork, we are able to clean up the code\nand simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3165\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3165</a> - We improved the type safety of our code while also discovering and fixing\na serialization bug.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3172\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3172</a> - We removed dead code.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3175\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to\ndislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3184\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3184</a> - We organized our property testing code.</li><li><a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3200\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the\nledger state to the Plutus script context.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-09-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-09T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-12-02-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress\nafter last week's summit. They have extended their model-based testing (MBT)\napproach with transaction creation &amp; observation\n<a href=\"https://github.com/input-output-hk/hydra/issues/410\" target=\"_blank\" rel=\"noopener noreferrer\">#410</a>, solved\n<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet\ninitialization <a href=\"https://github.com/input-output-hk/hydra/issues/439\" target=\"_blank\" rel=\"noopener noreferrer\">#439</a>.\nAlso, the Hydra researchers updated the security proofs of the Coordinated Hydra\nHead, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href=\"https://github.com/input-output-hk/hydra/pull/644\" target=\"_blank\" rel=\"noopener noreferrer\">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href=\"https://github.com/input-output-hk/hydra/issues/410\" target=\"_blank\" rel=\"noopener noreferrer\">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href=\"https://github.com/input-output-hk/hydra/issues/439\" target=\"_blank\" rel=\"noopener noreferrer\">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href=\"https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md\" target=\"_blank\" rel=\"noopener noreferrer\">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-02-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-12-02T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-12-01-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,\nit makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces\nmigrations. This release finalises the objectives that were set for db-sync for the previous\n3 months period and part of the syncing speed objective set for the next period\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100\" target=\"_blank\" rel=\"noopener noreferrer\">Changelog</a></p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Branch <a href=\"https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b\" target=\"_blank\" rel=\"noopener noreferrer\">release/13.1.0.x</a>\nincludes all the improvements related to the release. The release is passing through the testing\nphase and a number of bugs and issues have been fixed, like\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1312\" target=\"_blank\" rel=\"noopener noreferrer\">#1312</a>\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1311\" target=\"_blank\" rel=\"noopener noreferrer\">#1311</a>.\nAlso many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new\nrelease and development process, so that it takes into account migrations\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1305\" target=\"_blank\" rel=\"noopener noreferrer\">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for\ndocker.</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-01-db-sync",
+            "title": "DB sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-01T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2022-12-01-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href=\"https://github.com/input-output-hk/mithril/issues/563\" target=\"_blank\" rel=\"noopener noreferrer\">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href=\"https://github.com/input-output-hk/mithril/issues/585\" target=\"_blank\" rel=\"noopener noreferrer\">#585</a></li><li>Completed the second stage of the store automatic migration process <a href=\"https://github.com/input-output-hk/mithril/issues/600\" target=\"_blank\" rel=\"noopener noreferrer\">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href=\"https://github.com/input-output-hk/mithril/issues/588\" target=\"_blank\" rel=\"noopener noreferrer\">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href=\"https://github.com/input-output-hk/mithril/issues/599\" target=\"_blank\" rel=\"noopener noreferrer\">#599</a></li><li>Completed CI/CD handling of PR from forks <a href=\"https://github.com/input-output-hk/mithril/issues/597\" target=\"_blank\" rel=\"noopener noreferrer\">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href=\"https://github.com/input-output-hk/mithril/issues/586\" target=\"_blank\" rel=\"noopener noreferrer\">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href=\"https://github.com/input-output-hk/mithril/issues/587\" target=\"_blank\" rel=\"noopener noreferrer\">#587</a></li><li>Worked on multi-platforms end to end test <a href=\"https://github.com/input-output-hk/mithril/issues/601\" target=\"_blank\" rel=\"noopener noreferrer\">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href=\"https://github.com/input-output-hk/mithril/issues/398\" target=\"_blank\" rel=\"noopener noreferrer\">#398</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-01-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2022-12-01T00:00:00.000Z",
+            "author": {
+                "name": "Jean-Philippe Raynaud",
+                "url": "https://github.com/jpraynaud"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2022-12-01-system-test",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single\nRelay</em> functionality, and also tested some DB-Sync tags.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"framework-improvements\">Framework improvements:<a class=\"hash-link\" href=\"#framework-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href=\"https://github.com/mkoura/report-aggregator\" target=\"_blank\" rel=\"noopener noreferrer\">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"db-sync\">DB-Sync:<a class=\"hash-link\" href=\"#db-sync\" title=\"Direct link to heading\">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-12-01-system-test",
+            "title": "System Test Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-12-01T00:00:00.000Z",
+            "author": {
+                "name": "Dorin Solomon",
+                "url": "https://github.com/dorin100"
+            },
+            "tags": [
+                "system-test"
+            ]
+        },
+        {
+            "id": "2022-11-30-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic\ncursor API that was needed to implement LMDB range reads, which is in turn\nrequired for the implementation of the UTxO HD feature. We added tables to\nseveral tests in for the UTxO HD feature, which increases our confidence in the\ncorrectness of the prototype. The mempool property tests are close to being\ncompleted. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with\nCSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a\nhigh-level overview of consensus to the top level documentation of\n<code>ouroboros-network</code>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd-prototype\">UTxO HD prototype<a class=\"hash-link\" href=\"#utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">#1</a>)) which was\nneeded to solve a bug with LMDB range-reads. After this PR was merged, we focused on\nbridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating\nusing <code>lmdb-simple</code>'s cursor API without <code>Serialise</code> constraints (<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/3\" target=\"_blank\" rel=\"noopener noreferrer\">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4081\" target=\"_blank\" rel=\"noopener noreferrer\">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4184\" target=\"_blank\" rel=\"noopener noreferrer\">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses\ntables. This will enable us to exercise the UTxO HD mempool integration by\nleveraging the existing mempool property-tests. The new state-machine\nproperty-tests are still needed for testing the parallel behaviour of the\nmempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements\nin the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the\nstate machine did not have access to mutable references. However, the mempool\ntests require the use of such mutable references for mocking the ledger\ninterface. As a result, our parallel tests were failing with rather obscure\nmessages. @Jasagredo submitted a pull request (<a href=\"https://github.com/stevana/quickcheck-state-machine/pull/12\" target=\"_blank\" rel=\"noopener noreferrer\">#12</a>) that allows for\nnew mutable references to be created at each run of the state machine.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"backing-store-property-tests\">Backing store property tests<a class=\"hash-link\" href=\"#backing-store-property-tests\" title=\"Direct link to heading\">​</a></h4><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lsm-tree-implementation\">LSM tree implementation<a class=\"hash-link\" href=\"#lsm-tree-implementation\" title=\"Direct link to heading\">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code\nand gathering results (i.e., plots and their interpretation).</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"csj-prototype\">CSJ prototype<a class=\"hash-link\" href=\"#csj-prototype\" title=\"Direct link to heading\">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-vrf-and-kes-crypto-integration\">New VRF and KES crypto integration<a class=\"hash-link\" href=\"#new-vrf-and-kes-crypto-integration\" title=\"Direct link to heading\">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact\nKES and batched VRF (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4151\" target=\"_blank\" rel=\"noopener noreferrer\">#4151</a>).</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We\nare now working on the \"Implementation\" section (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4020\" target=\"_blank\" rel=\"noopener noreferrer\">#4020</a>).</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4146\" target=\"_blank\" rel=\"noopener noreferrer\">#4146</a> and <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4174\" target=\"_blank\" rel=\"noopener noreferrer\">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href=\"https://input-output-hk.github.io/ouroboros-network/\" target=\"_blank\" rel=\"noopener noreferrer\">top level\ndocumentation</a> of\nouroboros-network (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4197\" target=\"_blank\" rel=\"noopener noreferrer\">#4197</a>). This overview describes the consensus components and adds a\nhyperlinked map to the modules documentation.</p><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4197\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-30-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-30T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-11-30-node-cli-api",
+            "content_html": "<h1>2022-11-30 - 2022-12-13</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4675\" target=\"_blank\" rel=\"noopener noreferrer\">Append tx output in cli transaction build command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4592\" target=\"_blank\" rel=\"noopener noreferrer\">Update Error messages in cardano-cli</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4675\" target=\"_blank\" rel=\"noopener noreferrer\">Replace Data.Map with Data.Map.Strict</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4708\" target=\"_blank\" rel=\"noopener noreferrer\">Update Github actions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4179\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake snapshot command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4659\" target=\"_blank\" rel=\"noopener noreferrer\">Render consistent plutus script failure output</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4713\" target=\"_blank\" rel=\"noopener noreferrer\">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-30-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-30T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-11-30-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don't see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.\nThe idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.\nWe are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-30-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-30T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2022-11-28-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"stake-driven-data-diffusion-release-for-relays\">Stake-Driven Data Diffusion Release for Relays<a class=\"hash-link\" href=\"#stake-driven-data-diffusion-release-for-relays\" title=\"Direct link to heading\">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with\nRobust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the\nlast update, we informed about a performance regression, but it turns out it\nonly affects block producers, and thus we highly advise against running it on\nsuch nodes.  Further investigation is required to find the cause of it.</p><p>On IOG's benchmarking cluster we have seen quite a good performance improvement\non block propagation itself.  The cluster is running a static topology with\nvalency 6 (each node is connected to 6 other nodes).  In which every of the 50\nnodes are block producers.  The setup of this network is the same as mainnet.\nWe've seen 40-50% performance improvement on block propagation comparing to the\nsame cluster deployed with the same topology but using non-P2P nodes.  We think\nthis performance improvement is caused by using full duplex connections.  Quite\nlikely the transaction traffic floating in both directions on the same TCP\nconnection helps to keep the TCP window open.  Note that in a cluster of 50\nnodes with valency 6 the probability of having at least one duplex connection\nis more than 50%.  We don't expect the same improvement on mainnet because the\nnetwork is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4163\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4177\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4165\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"peer-sharing\">Peer Sharing<a class=\"hash-link\" href=\"#peer-sharing\" title=\"Direct link to heading\">​</a></h3><p>We were carrying a review of <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">peer sharing PR</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"deltaq\">DeltaQ<a class=\"hash-link\" href=\"#deltaq\" title=\"Direct link to heading\">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href=\"https://uclouvain.be/en/index.html\" target=\"_blank\" rel=\"noopener noreferrer\">UCLouvain</a>.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-have-we-achieve-last-sprint\">What have we achieve last sprint<a class=\"hash-link\" href=\"#what-have-we-achieve-last-sprint\" title=\"Direct link to heading\">​</a></h2><ul><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4163\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4163</a>: we found out that a control message is not passed to the\n<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion\ntimeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class=\"language-json codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-json codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token punctuation\" style=\"color:#393A34\">{</span><span class=\"token plain\"> </span><span class=\"token property\" style=\"color:#36acaa\">\"kind\"</span><span class=\"token operator\" style=\"color:#393A34\">:</span><span class=\"token plain\"> </span><span class=\"token string\" style=\"color:#e3116c\">\"PeerStatusChangeFailure\"</span><span class=\"token plain\"></span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\"></span><span class=\"token punctuation\" style=\"color:#393A34\">,</span><span class=\"token plain\"> </span><span class=\"token property\" style=\"color:#36acaa\">\"peerStatusChangeType\"</span><span class=\"token operator\" style=\"color:#393A34\">:</span><span class=\"token plain\"> </span><span class=\"token string\" style=\"color:#e3116c\">\"WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})\"</span><span class=\"token plain\"></span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\"></span><span class=\"token punctuation\" style=\"color:#393A34\">,</span><span class=\"token plain\"> </span><span class=\"token property\" style=\"color:#36acaa\">\"reason\"</span><span class=\"token operator\" style=\"color:#393A34\">:</span><span class=\"token plain\"> </span><span class=\"token string\" style=\"color:#e3116c\">\"TimeoutError\"</span><span class=\"token plain\"></span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\"></span><span class=\"token punctuation\" style=\"color:#393A34\">}</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4177\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now\nwe don't try demoted peers which are being demoted already.</p></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4155\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There's a top level\n<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>\n&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between\n<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing\n(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all\n(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>\nand <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much\ncleaner.</p></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4169\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>\ndoc.</p></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4165\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"deltaq-1\">DeltaQ<a class=\"hash-link\" href=\"#deltaq-1\" title=\"Direct link to heading\">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for\npurpose.</p><p>Distributed systems have become an integral part of our society and\ndaily lives. We are, both implicitly and explicitly, individually as well as\ncollectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes\nwell beyond notions of functional correctness (i.e. never getting the wrong\nanswer). We need them to deliver the desired outcomes in a timely, robust,\nreliable, resilient fashion, at scale and in a sustainable way (both\neconomically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical\napproach to capturing and reasoning about these issues? How can we ensure that\nsystems can meet their fit-for-purpose objectives, not just in their design but\nas they are deployed, encounter the imperfect world, are scaled to become\neconomic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation\n(as captured by ‘∆Q’) are being used to both frame the necessary notions and\nprovide a basis for assuring the refinement and reification of such systems,\nfrom initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target=\"_blank\" href=\"/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf\">here</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-28-network",
+            "title": "Network Team Update",
+            "summary": "Stake-Driven Data Diffusion Release for Relays",
+            "date_modified": "2022-11-28T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network",
+                "release"
+            ]
+        },
+        {
+            "id": "2022-11-25-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-summary\">Low level summary<a class=\"hash-link\" href=\"#low-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"musig2\">MuSig2<a class=\"hash-link\" href=\"#musig2\" title=\"Direct link to heading\">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don't need to be aware of the underlying secp256k1 library <a href=\"https://github.com/input-output-hk/musig2/pull/31\" target=\"_blank\" rel=\"noopener noreferrer\">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href=\"https://github.com/input-output-hk/musig2/pull/33\" target=\"_blank\" rel=\"noopener noreferrer\">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href=\"https://github.com/input-output-hk/musig2/pull/35\" target=\"_blank\" rel=\"noopener noreferrer\">PR#35</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril\">Mithril<a class=\"hash-link\" href=\"#mithril\" title=\"Direct link to heading\">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library's README <a href=\"https://github.com/input-output-hk/mithril/pull/616\" target=\"_blank\" rel=\"noopener noreferrer\">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href=\"https://github.com/input-output-hk/mithril/pull/620\" target=\"_blank\" rel=\"noopener noreferrer\">PR#620</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-base\">cardano-base<a class=\"hash-link\" href=\"#cardano-base\" title=\"Direct link to heading\">​</a></h3><ul><li>We've been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href=\"https://github.com/input-output-hk/cardano-base/pull/341\" target=\"_blank\" rel=\"noopener noreferrer\">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href=\"https://github.com/input-output-hk/cardano-base/pull/344\" target=\"_blank\" rel=\"noopener noreferrer\">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href=\"https://github.com/input-output-hk/cardano-base/pull/266\" target=\"_blank\" rel=\"noopener noreferrer\">PR#266</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href=\"https://github.com/input-output-hk/cardano-base/pull/255\" target=\"_blank\" rel=\"noopener noreferrer\">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-25-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-25T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2022-11-25-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href=\"https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/\" target=\"_blank\" rel=\"noopener noreferrer\">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href=\"https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/\" target=\"_blank\" rel=\"noopener noreferrer\">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-25-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-25T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-11-23-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We released <a href=\"https://github.com/cardano-foundation/CIPs/pull/380\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-1694</a>,\nour proposal for entering the <a href=\"https://roadmap.cardano.org/en/voltaire/\" target=\"_blank\" rel=\"noopener noreferrer\">Voltaire phase</a>.\n<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for\nCardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.\nThe draft pull request was polished, reviewed, and merged this week.\nThis solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,\nand the ledger team in particular dedicated one engineer to help with these efforts\nfor the next release.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"the-conway-ledger-era\">The Conway ledger era<a class=\"hash-link\" href=\"#the-conway-ledger-era\" title=\"Direct link to heading\">​</a></h3><p>The current proposal in <a href=\"https://github.com/cardano-foundation/CIPs/pull/380\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-1694</a> encompasses two new ledger eras.\nThe first era will be called Conway, after the English mathematician John Horton Conway.\nThe community facing aspects of the Conway ledger era will be very minimal,\nbut it will pave the way for introducing liquid democracy.\nThe details can be viewed <a href=\"https://github.com/input-output-hk/cardano-ledger/projects/4\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.\nWe do not yet have a formal specification for the Conway era.\nOur plan is to debut the\n<a href=\"https://github.com/input-output-hk/formal-ledger-specifications\" target=\"_blank\" rel=\"noopener noreferrer\">formal ledger model</a>.\nBriefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href=\"https://github.com/cardano-foundation/CIPs/pull/318\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href=\"https://github.com/cardano-foundation/CIPs/pull/380\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-1694</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"versioned-cbor\">Versioned CBOR<a class=\"hash-link\" href=\"#versioned-cbor\" title=\"Direct link to heading\">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano\nmajor protocol version.\nWe still aim to preserve backwards compatibility as much as possible, but we now have a principled\nplan for resolving problems (see <a href=\"https://github.com/cardano-foundation/CIPs/pull/372\" target=\"_blank\" rel=\"noopener noreferrer\">CIP-ledger-cbor</a>).\nIn particular, we can now address several long standing issues, such as\n<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2444\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2444</a>, <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2965\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2965</a>, and <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3003\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3138\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3138</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"deposit-tracking\">Deposit tracking<a class=\"hash-link\" href=\"#deposit-tracking\" title=\"Direct link to heading\">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits\nis much closer now to being ready to take out of draft (<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3127\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3127</a>).\nFor background on the issue, see <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3113\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3113</a>.\nThis is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>As always, we keep working on technical debt.\nWe have deduplicated a some things: <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3129\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3129</a>, <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3162\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3162</a>.\nWe have memoized a problematic computation (though more due diligence is needed before we can\nmerge): <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3141\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3141</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-release\">Node release<a class=\"hash-link\" href=\"#node-release\" title=\"Direct link to heading\">​</a></h3><p>We have been helping with the node release efforts. See <a href=\"https://github.com/input-output-hk/cardano-node/pull/4608\" target=\"_blank\" rel=\"noopener noreferrer\">pull-4608</a>.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-23-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-23T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-11-18-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href=\"https://github.com/input-output-hk/hydra\" target=\"_blank\" rel=\"noopener noreferrer\"><code>hydra</code></a>!</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href=\"https://github.com/input-output-hk/hydra-poc/issues/580\" target=\"_blank\" rel=\"noopener noreferrer\">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href=\"https://github.com/input-output-hk/hydra/releases/tag/0.8.1\" target=\"_blank\" rel=\"noopener noreferrer\">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href=\"https://github.com/input-output-hk/hydra/pull/615\" target=\"_blank\" rel=\"noopener noreferrer\">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>\"Developing Hydra\" on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-18-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-18T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-11-18-mithril",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>Released a new Mithril distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2246.1\" target=\"_blank\" rel=\"noopener noreferrer\">2246.1</a></li><li>Completed the first stage of the store migrations process <a href=\"https://github.com/input-output-hk/mithril/issues/562\" target=\"_blank\" rel=\"noopener noreferrer\">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href=\"https://github.com/input-output-hk/mithril/issues/565\" target=\"_blank\" rel=\"noopener noreferrer\">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href=\"https://github.com/input-output-hk/mithril/issues/576\" target=\"_blank\" rel=\"noopener noreferrer\">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href=\"https://github.com/input-output-hk/mithril/issues/606\" target=\"_blank\" rel=\"noopener noreferrer\">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href=\"https://github.com/input-output-hk/mithril/issues/594\" target=\"_blank\" rel=\"noopener noreferrer\">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href=\"https://github.com/input-output-hk/mithril/issues/563\" target=\"_blank\" rel=\"noopener noreferrer\">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href=\"https://github.com/input-output-hk/mithril/issues/588\" target=\"_blank\" rel=\"noopener noreferrer\">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href=\"https://github.com/input-output-hk/mithril/issues/398\" target=\"_blank\" rel=\"noopener noreferrer\">#398</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-18-mithril",
+            "title": "Mithril Team Update",
+            "summary": "High level overview",
+            "date_modified": "2022-11-18T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2022-11-16-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team started documenting the\nimplementation of the UTxO HD feature and continued developing tests for it. As\npart of our work on UTxO HD, we improved the Haskell support for LMDB. We also\nspent time working on the LSM tree prototype, and designed a parameter tuning\nalgorithm for it. Regarding our work on Genesis, our investigation of the\n\"plateaus\" pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This\nled us to developing a caching strategy that will not only remove the\naforementioned \"plateaus\", but can help alleviating the growing block production\ndelay on epoch switch. We also helped reviewing the block forge credential\nhotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In\nparticular, we improved the <code>io-sim</code> framework, which is crucial for testing and\nsimulating Cardano components. We also removed thunks that appeared on era\ntranslations, and improved our diffusion pipelining feature. We are working on a\npresentation for explaining Praos and Genesis.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-status-report\">High-level status report<a class=\"hash-link\" href=\"#high-level-status-report\" title=\"Direct link to heading\">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the\nanti-diff implementation of sequences of differences. Speedups are now in the\nrange of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a \"parameter tuning algorithm\" for the LSM tree\nprototype. This enables us to run experiments to check the correctness of\nthe algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the \"plateaus\" in the <code>ChainSync</code> jumping prototype\npointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for\ntesting and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ \"plateaus\" led us to developing a caching strategy for\n<code>TICKF</code> that will not only remove these \"plateaus\", but can help alleviating\nthe growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended\nfor use in the adoption of P2P.</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"finish-the-utxo-hd-prototype\">Finish the UTxO HD prototype<a class=\"hash-link\" href=\"#finish-the-utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We merged PR <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4060\" target=\"_blank\" rel=\"noopener noreferrer\">#4060</a>, which adds a report documenting the UTxO HD\nfeature, and puts emphasis in explaining how the mempool works in combination\nwith UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the\nmempool (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4076\" target=\"_blank\" rel=\"noopener noreferrer\">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4143\" target=\"_blank\" rel=\"noopener noreferrer\">#4143</a>). The problem was that we were testing with mostly small\nvalues, which artificially boosted the performance gains we saw on benhcmarks.\nSpeedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different\nconfigurations.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"backing-store-property-tests\">Backing store property tests<a class=\"hash-link\" href=\"#backing-store-property-tests\" title=\"Direct link to heading\">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">#1</a>).\nThis required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new\nAPI. We also updated the backing store property tests to use the new version of\nthe monadic cursor API.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lsm-tree-implementation\">LSM tree implementation<a class=\"hash-link\" href=\"#lsm-tree-implementation\" title=\"Direct link to heading\">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a\n\"parameter tuning algorithm\" that adapts the LSM tree design based on factors\nlike:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with\nexisting experimental results from the LSM tree paper to see if the algorithm is\nworking correctly.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking-the-csj-prototype\">Benchmarking the CSJ prototype<a class=\"hash-link\" href=\"#benchmarking-the-csj-prototype\" title=\"Direct link to heading\">​</a></h3><p>We focused on investigating the \"plateaus\" in the <code>ChainSync</code> tip, which turned\nout to be due to the <code>TICKF</code> bug which we previously were only aware of in the\ncontext of the long forging times near epoch boundaries. For the most drastic\npatch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the\n<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png\" width=\"765\" height=\"445\" class=\"img_ev3q\"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the\nbaseline.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png\" width=\"773\" height=\"445\" class=\"img_ev3q\"></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><p>After addressing the PR comments, we merged PR <a href=\"https://github.com/input-output-hk/io-sim/pull/16\" target=\"_blank\" rel=\"noopener noreferrer\">#16</a>, which implements\nthe <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>\nlibrary, which is crucial for testing and simulating Cardano components PR #16\nclosed <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/1461\" target=\"_blank\" rel=\"noopener noreferrer\">#1461</a>. This new feature was published as version <code>0.4.0.0</code>\nof <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling\nnightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and\n<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of\nthunks that appeared in era translations (<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3143\" target=\"_blank\" rel=\"noopener noreferrer\">#3143</a>). The fixes will be\nintegrated back into consensus when <code>cardano-ledger</code> approves and publish the\nchanges introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/2\" target=\"_blank\" rel=\"noopener noreferrer\">#2</a>). We currently test the build on\na Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3857\" target=\"_blank\" rel=\"noopener noreferrer\">#3857</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3860\" target=\"_blank\" rel=\"noopener noreferrer\">#3860</a>,\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3856\" target=\"_blank\" rel=\"noopener noreferrer\">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fostering-collaboration\">Fostering collaboration<a class=\"hash-link\" href=\"#fostering-collaboration\" title=\"Direct link to heading\">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and\nGenesis explanation presentations. The idea is to produce a video that gives an\noverview of these protocols.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"support\">Support<a class=\"hash-link\" href=\"#support\" title=\"Direct link to heading\">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4054\" target=\"_blank\" rel=\"noopener noreferrer\">#4054</a>), since this was blocking our benchmarking work for\nGenesis. In addition, this issue has the Cardano community <a href=\"https://github.com/input-output-hk/cardano-node/issues/4421\" target=\"_blank\" rel=\"noopener noreferrer\">quite\nconcerned</a>, so we are hoping the work done in caching the\ncomputation of the <code>TICKF</code> rule can help alleviating the growing block\nproduction delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3800\" target=\"_blank\" rel=\"noopener noreferrer\">#3800</a> from the\nnetworking team, which is intended for use in the adoption of P2P.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-16-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-16T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-11-16-node-cli-api",
+            "content_html": "<h1>2022-11-16 - 2022-11-29</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"docs\">docs<a class=\"hash-link\" href=\"#docs\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4562\" target=\"_blank\" rel=\"noopener noreferrer\">Add a native tokens tutorial and exercises</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4674\" target=\"_blank\" rel=\"noopener noreferrer\">Update cardano-cli's help</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4644\" target=\"_blank\" rel=\"noopener noreferrer\">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4639\" target=\"_blank\" rel=\"noopener noreferrer\">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4650\" target=\"_blank\" rel=\"noopener noreferrer\">Fix windows CI</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4179\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake snapshot command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4625\" target=\"_blank\" rel=\"noopener noreferrer\">Handle pipes in cardano-cli</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-16-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-16T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-11-16-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing\">Tracing<a class=\"hash-link\" href=\"#tracing\" title=\"Direct link to heading\">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"infrastructure\">Infrastructure<a class=\"hash-link\" href=\"#infrastructure\" title=\"Direct link to heading\">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-16-performance-and-tracing",
+            "title": "Performance & tracing update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-16T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2022-11-11-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href=\"https://github.com/input-output-hk/cardano-base/pull/320\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href=\"https://github.com/input-output-hk/cardano-base/pull/336\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> has been merged, and we've adapted the KES secure <a href=\"https://github.com/input-output-hk/cardano-base/pull/255\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href=\"https://github.com/input-output-hk/cardano-base/pull/341\" target=\"_blank\" rel=\"noopener noreferrer\">PR#</a>). Finally, we've 'cleaned' our libsodium fork, and we directly fork upstream, rather than forking Algorand's fork. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href=\"https://github.com/input-output-hk/kes-agent\" target=\"_blank\" rel=\"noopener noreferrer\">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-11-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level overview",
+            "date_modified": "2022-11-11T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2022-11-11-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper\non our \"Hydra for Payments\" project (<a href=\"https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/\" target=\"_blank\" rel=\"noopener noreferrer\">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href=\"https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/\" target=\"_blank\" rel=\"noopener noreferrer\">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href=\"https://github.com/input-output-hk/hydra-poc/issues/599\" target=\"_blank\" rel=\"noopener noreferrer\">#599</a>)</li><li>Minor improvements to logging for better observability (<a href=\"https://github.com/input-output-hk/hydra-poc/issues/598\" target=\"_blank\" rel=\"noopener noreferrer\">#598</a>, <a href=\"https://github.com/input-output-hk/hydra-poc/issues/600\" target=\"_blank\" rel=\"noopener noreferrer\">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href=\"https://github.com/input-output-hk/hydra-poc/issues/590\" target=\"_blank\" rel=\"noopener noreferrer\">#590</a>)</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implement event-sourced persistence <a href=\"https://github.com/input-output-hk/hydra-poc/issues/580\" target=\"_blank\" rel=\"noopener noreferrer\">#580</a></li><li>Close more gaps <a href=\"https://github.com/input-output-hk/hydra-poc/pull/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>\"Developing Hydra\" on Day 2, Nov 21st, 13:50 CET</strong></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-11-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-11T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-11-11-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned\nCBOR serialization. This was an enormous effort, but it will solve a host of problems that we have\nhad since the Shelley phase. It will take time to properly review it, and we will\nneed to put in a lot of effort to integrate it with the downstream components, but this is  a huge\nmilestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction\nserialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will\nnot notice any difference, but it is a necessary change needed to prepare the way for\ndecentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on\nbringing coherency and consistency to the code base with a common naming convention, and\nimproving some error messages.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.\nWhen we encounter a problem with our deserializers, it can be very difficult to implement a fix.\nIt is difficult because we can only fix such issues during a hard fork, and leading up to the\nhard fork we must maintain two serializations for the same type in order to not cause unintended\nnetwork splitting (the problematic version must be used before the hard fork,\nand the fixed version is used afterwards).\nThis can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to\nsearch for where all the problematic uses are located.\nThe new versioned CBOR serialization allows us to gracefully handle this transition.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3138\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.\nSee [<a href=\"https://github.com/cardano-foundation/CIPs/pull/372\" target=\"_blank\" rel=\"noopener noreferrer\">pull-372</a>].</li><li>We have draft for the new deposit tracking.\nThis draft is not as memory efficient as the final version will be,\nbut it is a sufficient proof of concept that we can write property tests against, ensuring\nthat we have not changed the semantics.\nWe will optimize after we are sure of the correctness.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3127\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper\nfunction, named <code>evaluateTransactionExecutionUnits</code>.\nIn particular, it now returns all the information needed to rerun the script with exactly the\nsame arguments. This feature will end up appearing in the CLI and other tools from the Plutus\ntools team.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3135\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3126\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3126</a>], [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3120\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3120</a>], [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3118\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3118</a>], and [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3116\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the\n<a href=\"https://input-output-hk.github.io/cardano-engineering-handbook/\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano Engineering Handbook</a>\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3139\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3139</a>].</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-11-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-11T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-11-11-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster\n(which consists of 50 nodes).  There is a performance regression in the header\nnotification metric.  The P2P cluster is constructed with the same\ntopology as the non-p2p reference one this indicates some regression which\nneeds to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P\nrelease for BP nodes: <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3159\" target=\"_blank\" rel=\"noopener noreferrer\">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href=\"https://github.com/input-output-hk/cardano-node/issues/4559\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4559</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3888\" target=\"_blank\" rel=\"noopener noreferrer\">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with\n<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detail-description\">Detail description<a class=\"hash-link\" href=\"#detail-description\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance-regression\">Performance regression<a class=\"hash-link\" href=\"#performance-regression\" title=\"Direct link to heading\">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png\" class=\"img_ev3q\"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of\nthe slot to when a header was received. The <code>y</code> axis is the percentile of nodes\nthat received a header.  We are currently investigating possible causes of the\nregression. </p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-p2p-topology-form\">New P2P topology form<a class=\"hash-link\" href=\"#new-p2p-topology-form\" title=\"Direct link to heading\">​</a></h3><p>The new topology file format is described in this <a href=\"https://github.com/input-output-hk/cardano-node/issues/4559\" target=\"_blank\" rel=\"noopener noreferrer\">issue #4559</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tracing-improvements\">Tracing improvements<a class=\"hash-link\" href=\"#tracing-improvements\" title=\"Direct link to heading\">​</a></h3><ul><li>We improved a handshake error reporting, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4136\" target=\"_blank\" rel=\"noopener noreferrer\">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>\nin <code>json</code> format, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4127\" target=\"_blank\" rel=\"noopener noreferrer\">pull #4127</a>.  Such demotions should be investigated by the\npool operator.  They can indicate a problem in the deployed system, but also\nthey could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-source-improvements\">Open Source Improvements<a class=\"hash-link\" href=\"#open-source-improvements\" title=\"Direct link to heading\">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source\ncontributors and/or maintenance tasks: <a href=\"https://github.com/input-output-hk/typed-protocols/pull/22\" target=\"_blank\" rel=\"noopener noreferrer\">pull #22</a>, <a href=\"https://github.com/input-output-hk/io-sim/pull/45\" target=\"_blank\" rel=\"noopener noreferrer\">pull #45</a>, <a href=\"https://github.com/input-output-hk/io-sim/pull/48\" target=\"_blank\" rel=\"noopener noreferrer\">pull #48</a>. </p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-11-network",
+            "title": "Network Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-11T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2022-11-04-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href=\"https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.8.0 release notes</a>. They also completed implementation of <a href=\"https://hydra.family/head-protocol/adr/18/\" target=\"_blank\" rel=\"noopener noreferrer\">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href=\"https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557\" target=\"_blank\" rel=\"noopener noreferrer\">#195</a> and alignment of the specification document with auditors.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete and merge ADR18 <a href=\"https://github.com/input-output-hk/hydra-poc/pull/579\" target=\"_blank\" rel=\"noopener noreferrer\">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href=\"https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0\" target=\"_blank\" rel=\"noopener noreferrer\">0.8.0 release notes</a> <a href=\"https://github.com/input-output-hk/hydra-poc/pull/595\" target=\"_blank\" rel=\"noopener noreferrer\">#595</a></li><li>Have first gap of <a href=\"https://github.com/input-output-hk/hydra-poc/pull/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href=\"https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557\" target=\"_blank\" rel=\"noopener noreferrer\">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Implement event-sourced persistence <a href=\"https://github.com/input-output-hk/hydra-poc/issues/580\" target=\"_blank\" rel=\"noopener noreferrer\">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href=\"https://github.com/input-output-hk/hydra-poc/pull/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-04-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-04T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-11-04-mithril",
+            "content_html": "<p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href=\"https://github.com/input-output-hk/mithril/issues/500\" target=\"_blank\" rel=\"noopener noreferrer\">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href=\"https://github.com/input-output-hk/mithril/issues/542\" target=\"_blank\" rel=\"noopener noreferrer\">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href=\"https://github.com/input-output-hk/mithril/issues/543\" target=\"_blank\" rel=\"noopener noreferrer\">#543</a></li><li>Publication of an <a href=\"https://mithril.network/doc/adr/3\" target=\"_blank\" rel=\"noopener noreferrer\">ADR3</a></li><li>Publication of a <a href=\"https://mithril.network/doc/dev-blog/2022/10/28/updated-environments\" target=\"_blank\" rel=\"noopener noreferrer\">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href=\"https://github.com/input-output-hk/mithril/releases/tag/2244.0\" target=\"_blank\" rel=\"noopener noreferrer\">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href=\"https://github.com/input-output-hk/mithril/issues/565\" target=\"_blank\" rel=\"noopener noreferrer\">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href=\"https://github.com/input-output-hk/mithril/issues/562\" target=\"_blank\" rel=\"noopener noreferrer\">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href=\"https://github.com/input-output-hk/mithril/issues/526\" target=\"_blank\" rel=\"noopener noreferrer\">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href=\"https://github.com/input-output-hk/mithril/pull/484\" target=\"_blank\" rel=\"noopener noreferrer\">#484</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril",
+            "title": "Mithril Team Update",
+            "summary": "This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.",
+            "date_modified": "2022-11-04T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "mithril"
+            ]
+        },
+        {
+            "id": "2022-10-31-open-source",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High Level Summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>We've been working toward publishing <em>Cardano Backlog</em>, currently its in\nreview by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href=\"https://input-output-hk.github.io/cardano-updates\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-updates</a>.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-description\">Detailed description<a class=\"hash-link\" href=\"#detailed-description\" title=\"Direct link to heading\">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for\ncardano project.  In last few weeks we were making steps towards publishing our\nbacklog.  It's currently under review by the communication team, although most\nof the issues are already visible across various repositories.</p><p>The open-source initiatives have their own\n<a href=\"https://github.com/orgs/input-output-hk/projects/60\" target=\"_blank\" rel=\"noopener noreferrer\">project</a>.  It is set up\nto help us track our major open-source activities.  Right now there are two\nwork streams:</p><ul><li>the work on <a href=\"https://input-output-hk.github.io/cardano-engineering-handbook/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href=\"https://hackage.haskell.org/\" target=\"_blank\" rel=\"noopener noreferrer\">Hackage</a> or <a href=\"https://crates.io\" target=\"_blank\" rel=\"noopener noreferrer\">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to\n<em>Cardano</em> which we would like publish to publish, see the following\n<a href=\"https://github.com/orgs/input-output-hk/projects/60/views/3\" target=\"_blank\" rel=\"noopener noreferrer\">link</a>.  Arnauld Bailly recently published\n<a href=\"https://hackage.haskell.org/package/quickcheck-dynamic\" target=\"_blank\" rel=\"noopener noreferrer\"><code>quickcheck-dynamic</code></a>\nlibrary on Hackage.  The networking team is slowly progressing towards\npublishing <a href=\"https://github.com/input-output-hk/io-sim\" target=\"_blank\" rel=\"noopener noreferrer\">io-sim</a> and related packages, checkout the progress\n<a href=\"https://github.com/orgs/input-output-hk/projects/19/views/24\" target=\"_blank\" rel=\"noopener noreferrer\">here</a>.</p><p>Thanks to Arnaud Bailly our <a href=\"https://input-output-hk.github.io/cardano-updates\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano Updates</a> website has\na new look &amp; feel!  It's using <a href=\"https://docusaurus.io\" target=\"_blank\" rel=\"noopener noreferrer\">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source\nrepositories.  He collected many interesting metrics, which allows us to see\nwhere we need to improve as an open-source project to make the Cardano project\nand many smaller related libraries which we maintain be more open and available\nfor open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano\nrepositories are missing the most:\n<img loading=\"lazy\" alt=\"Documentation Adoption\" src=\"/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png\" width=\"1493\" height=\"716\" class=\"img_ev3q\">\nYou can expect we will improve in these metrics in the coming weeks.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-31-open-source",
+            "title": "Open-Source Team",
+            "summary": "High Level Summary",
+            "date_modified": "2022-11-04T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "open-source"
+            ]
+        },
+        {
+            "id": "2022-11-03-embedding-quality",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)\nSee <a href=\"https://input-output-hk.github.io/cardano-node-tests\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-tests webpage</a>.</li><li>We defined an <a href=\"https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md\" target=\"_blank\" rel=\"noopener noreferrer\">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href=\"https://github.com/input-output-hk/cardano-node/issues\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-03-embedding-quality",
+            "title": "Embedding Quality Workstream",
+            "summary": "High level summary",
+            "date_modified": "2022-11-03T00:00:00.000Z",
+            "author": {
+                "name": "Dorin Solomon",
+                "url": "https://github.com/dorin100"
+            },
+            "tags": [
+                "embedding-quality"
+            ]
+        },
+        {
+            "id": "2022-10-02-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the\nUTxO HD prototype. We completed the era-transition and backing store tests, and\nthe mempool tests are advancing at a steady pace. Regarding our work in the\nGenesis design, we continued our collaboration with the research and networking\nteams, and we continue investigating strategies for making the chain-sync\njumping prototype faster.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-status-report\">High-level status report<a class=\"hash-link\" href=\"#high-level-status-report\" title=\"Direct link to heading\">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs\nin the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to\nincorporate the improvements to the LMDB cursor API that these tests\nmade possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and\nthe networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping\nprototype. We gained additional insight on which parameters to tweak next.\nIn spite of the baseline still being faster, the current prototype already\nachieves a significant speedup when compared to the naive approach of simply\nrunning full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and\ncross-era chain selection.</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"finish-the-utxo-hd-prototype\">Finish the UTxO HD prototype<a class=\"hash-link\" href=\"#finish-the-utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular\nwe merged the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4073\" target=\"_blank\" rel=\"noopener noreferrer\">era-transition tests\nPR</a>.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"backing-store-property-tests\">Backing store property tests<a class=\"hash-link\" href=\"#backing-store-property-tests\" title=\"Direct link to heading\">​</a></h4><p>The <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4081\" target=\"_blank\" rel=\"noopener noreferrer\">backing store property tests\nPR</a> has been\nreviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting\ntest cases.</li></ul><p>The <a href=\"https://github.com/input-output-hk/lmdb-simple/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">monadic cursor API</a>\nwent through its first review round. The API is in a relatively stable state.\nThis PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB\noperations. The next steps are:</p><ul><li>Write\n<a href=\"https://hackage.haskell.org/package/quickcheck-dynamic\" target=\"_blank\" rel=\"noopener noreferrer\"><code>quickcheck-dynamic</code></a>\nstate-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property\ntests. This will involve adding boilerplate code in consensus to make up for\nthe removal of the <code>cborg</code>-based interface.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lsm-tree-implementation\">LSM tree implementation<a class=\"hash-link\" href=\"#lsm-tree-implementation\" title=\"Direct link to heading\">​</a></h2><p>We worked on the <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4121\" target=\"_blank\" rel=\"noopener noreferrer\">LSM tree\nprototype</a>. In\nparticular, we focused on tuning the LSM tree design to the different workloads\nthat consensus has (eg syncing, normal node operation, etc).</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking-the-csj-prototype\">Benchmarking the CSJ prototype<a class=\"hash-link\" href=\"#benchmarking-the-csj-prototype\" title=\"Direct link to heading\">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular\nwe compared the performance of different jump intervals, which, somewhat\nsurprisingly, do not make a significant difference. In particular, we are seeing\nperiodic \"plateaus\" where the chain-sync tip does not progress, but they are\nmuch longer for the prototype. Our hypothesis is that this seem to be due to a\ncombination of the garbage collector (GC) pauses, and the actual time it takes\nthe non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo\nfragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of\ntweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype\nusing different jumping intervals. It compares the syncing progress by plotting\nthe slots of adopted blocks against time. The baseline is still faster, however\nit is worth noting that the current prototype already achieves a significant\nspeedup when compared to the naive approach of simply running full chain-sync\nwith all peers.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg\" width=\"998\" height=\"445\" class=\"img_ev3q\"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,\nand includes, in addition to the slots of adopted blocks, the slots of the tip\nof the ChainSync fragment. This allows us to see how far ahead of the selected\ntip the CS dynamo is, i.e. how much room we have for BlockFetch not to get\nstalled. It shows periodic behaviour (due to the forecasting limit), and shows\nthat the CS fragment tip is not progressing for significant periods\n(\"plateaus\").</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg\" width=\"998\" height=\"445\" class=\"img_ev3q\"></p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h2><p>We <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4098\" target=\"_blank\" rel=\"noopener noreferrer\">clarified</a> a\ncommon source of confusion around VRF tie-breaking and cross-era chain\nselection. This PR involved correcting potentially misleading names of\nVRF-related functions, and providing context for a particular VRF value is\nused for tie-breaking.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-02-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-11-02T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-11-02-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have made the decision to use the\n<a href=\"https://github.com/input-output-hk/formal-ledger-specifications\" target=\"_blank\" rel=\"noopener noreferrer\">formal ledger repository</a>\nin place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure\nto the model. In particular, we now have a lot of support for axiomatic set theory.\nWhile the next ledger era is still in the design phase, most of the team remains working\non technical debt.\nIn particular, we have moved a lot more code out of the Shelley specific modules and into\na ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>\nledger transition (while improving the performance), made conveniences to the development\nenvironment, cleaned up all the recent changes to the cost model, added a lot of documentation,\nfixed some flaky tests, and deleted some dead code.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"axiomatic-set-theory\">Axiomatic Set Theory<a class=\"hash-link\" href=\"#axiomatic-set-theory\" title=\"Direct link to heading\">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in\nthe formal ledger specifications. See [<a href=\"https://github.com/input-output-hk/formal-ledger-specifications/pull/20\" target=\"_blank\" rel=\"noopener noreferrer\">pull-20</a>].</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed-technical-debt\">Completed Technical Debt<a class=\"hash-link\" href=\"#completed-technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3039\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3039</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3093\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which\nmakes our CBOR serialization round-trip tests much more robust, and will also hopefully\nhelp enforce the mandate for downstream libraries to never re-serialize data that needs\nto be hashed. See [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3073\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3073</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3095\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3095</a>]\n(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.\nWe now have a lot of benchmarks surrounding this code, and have added performance improvements.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3068\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3068</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3035\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3035</a>].</li><li>We have restored support for\n<a href=\"https://hackage.haskell.org/package/ghcid\" target=\"_blank\" rel=\"noopener noreferrer\">ghcid</a>\nin our repository. This is a tool for developing with Haskell that many of us find greatly\nimproves our productivity by providing us with constant feedback from the type checker.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3112\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3075\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3075</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3101\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the\nledger repository, and cleaned it up\n(most of the heavy lifting was done by our amazing technical writers).\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3091\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3091</a>].</li><li>We removed dead code. See [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3089\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3109\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3109</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3110\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3110</a>].</li><li>We've removed more of the awkward legacy template Haskell names.\nSee [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3108\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3108</a>].</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-02-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-02T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-11-02-node-cli-api",
+            "content_html": "<h1>2022-11-02 - 2022-11-15</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4567\" target=\"_blank\" rel=\"noopener noreferrer\">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4546\" target=\"_blank\" rel=\"noopener noreferrer\">Reduce exposed modules in cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4587\" target=\"_blank\" rel=\"noopener noreferrer\">Add Ord instance for AddressInEra</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4496\" target=\"_blank\" rel=\"noopener noreferrer\">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4635\" target=\"_blank\" rel=\"noopener noreferrer\">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4628\" target=\"_blank\" rel=\"noopener noreferrer\">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4599\" target=\"_blank\" rel=\"noopener noreferrer\">export RawBytesHexError</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/2883\" target=\"_blank\" rel=\"noopener noreferrer\">Add Plutus minting script doc</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4575/files\" target=\"_blank\" rel=\"noopener noreferrer\">Improve test output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4586\" target=\"_blank\" rel=\"noopener noreferrer\">Enable stale bot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4557\" target=\"_blank\" rel=\"noopener noreferrer\">Add link to troubleshooting page in the wiki</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4550\" target=\"_blank\" rel=\"noopener noreferrer\">Use environment files in Github Actions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4544\" target=\"_blank\" rel=\"noopener noreferrer\">Add single entrypoint for starting testnets</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4575\" target=\"_blank\" rel=\"noopener noreferrer\">Improve cardano-testnet test output</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4595\" target=\"_blank\" rel=\"noopener noreferrer\">Reorder module hierarchy</a></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4179\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake snapshot command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-02-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-02T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-11-02-release",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-reelease-update\">Node Reelease Update<a class=\"hash-link\" href=\"#node-reelease-update\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"2022-10-19---2022-11-02\">2022-10-19 - 2022-11-02<a class=\"hash-link\" href=\"#2022-10-19---2022-11-02\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive Summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,\na temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1\" target=\"_blank\" rel=\"noopener noreferrer\">1.35.4-rc1 tag</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1\" target=\"_blank\" rel=\"noopener noreferrer\">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href=\"https://github.com/input-output-hk/cardano-node/pull/4540\" target=\"_blank\" rel=\"noopener noreferrer\">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><p><a href=\"https://github.com/input-output-hk/cardano-node/commits/release/1.35\" target=\"_blank\" rel=\"noopener noreferrer\">Release 1.35.4</a></p><ul><li><a href=\"https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst\" target=\"_blank\" rel=\"noopener noreferrer\">Test Status</a></li></ul></li><li><p><a href=\"https://input-output-hk.github.io/cardano-updates/2022-08-12-sre\" target=\"_blank\" rel=\"noopener noreferrer\">Cicero CI Migration</a></p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-02-release",
+            "title": "Node Release Team Update",
+            "summary": "Node Reelease Update",
+            "date_modified": "2022-11-02T00:00:00.000Z",
+            "author": {
+                "name": "Samuel Leathers",
+                "url": "https://github.com/disassembler"
+            },
+            "tags": [
+                "release"
+            ]
+        },
+        {
+            "id": "2022-11-02-system-test",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href=\"https://input-output-hk.github.io/cardano-node-tests/\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href=\"https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst\" target=\"_blank\" rel=\"noopener noreferrer\">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href=\"https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests\" target=\"_blank\" rel=\"noopener noreferrer\">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-02-system-test",
+            "title": "System Test Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-02T00:00:00.000Z",
+            "author": {
+                "name": "Dorin Solomon",
+                "url": "https://github.com/dorin100"
+            },
+            "tags": [
+                "system-test"
+            ]
+        },
+        {
+            "id": "2022-11-01-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,\nunique and foreign keys. It also provides a way to fix older values and migrates without the need to\nresync from genesis.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"schema-simplifications\">Schema simplifications<a class=\"hash-link\" href=\"#schema-simplifications\" title=\"Direct link to heading\">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1295\" target=\"_blank\" rel=\"noopener noreferrer\">#1295</a>\nThe same pr also introduces a different way to rollback, which doesn't rely on foreign keys and\nindexes.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"performance\">Performance<a class=\"hash-link\" href=\"#performance\" title=\"Direct link to heading\">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A\nconservative number of these will be included in the next release and the rest can be found in\n<a href=\"https://github.com/orgs/input-output-hk/projects/52/views/7\" target=\"_blank\" rel=\"noopener noreferrer\">performance view</a>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"migrations-and-resyncing\">Migrations and resyncing<a class=\"hash-link\" href=\"#migrations-and-resyncing\" title=\"Direct link to heading\">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also\nintroduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1294\" target=\"_blank\" rel=\"noopener noreferrer\">#1294</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"release\">Release<a class=\"hash-link\" href=\"#release\" title=\"Direct link to heading\">​</a></h3><p>The release has been mostly cherry-picked from master\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1294\" target=\"_blank\" rel=\"noopener noreferrer\">#1294</a> and its scope can be seen\n<a href=\"https://github.com/orgs/input-output-hk/projects/52/views/6\" target=\"_blank\" rel=\"noopener noreferrer\">release view</a></p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-11-01-db-sync",
+            "title": "DB Sync Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-11-01T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2022-10-28-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the hydra team completed several user experience improvements to the\n<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head\nstates by publishing release version\n<a href=\"https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>0.8.0</code></a>.\nBesides this, they met with researchers on topic of the HeadV1 specification and\nkicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href=\"https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0\" target=\"_blank\" rel=\"noopener noreferrer\"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href=\"https://github.com/input-output-hk/hydra-poc/issues/580\" target=\"_blank\" rel=\"noopener noreferrer\">#580</a></li><li>Have a first plutus script gap closed <a href=\"https://github.com/input-output-hk/hydra-poc/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-28-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-28T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-10-28-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which\nfortunately hasn't been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with\nthe scientists on eclipse evasion.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"detailed-description\">Detailed description<a class=\"hash-link\" href=\"#detailed-description\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"p2p-network-stack\">P2P Network Stack<a class=\"hash-link\" href=\"#p2p-network-stack\" title=\"Direct link to heading\">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer\nsharing.  We found and fixed an important bug recently introduced in one of the\ncomponents of p2p networking stack (fortunately never released).  Together with\na fix, we designed a unit test diffusion simulation as well as quickcheck\nproperty test (both could reproduce it). We also changed the code in a way that\nif such a bug is reintroduced in the future, it will be obvious to diagnose.\nFor more see:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4067\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4067</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4086\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where\nunlike what we see on the mainnet.  We found a possible misconfiguration of the\ncluster (caused by 0 TTL on domain names), which could be the direct cause of\nit.  We wrote a PR which rules out such misconfiguration.  We are awaiting on\nthe next benchmarking results.  See more at:</p><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4106\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4120\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4120</a>\nincludes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started\nworking toward integration these changes against the release branch of\n<code>cardano-node</code>.  Early next week we ought to be able to have an early version\nof <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3888\" target=\"_blank\" rel=\"noopener noreferrer\">P2P - Single\nRelay</a>\nissue.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"consensus\">Consensus<a class=\"hash-link\" href=\"#consensus\" title=\"Direct link to heading\">​</a></h3><p>We identified and fixed missing error reporting in consensus\ninitialisation phase.  See more at\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4015\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4015</a></p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano Node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for\nnode operators.  This includes updating severities of some of the traces as\nwell as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4563\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#4563</a>.</li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4561\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node#4561</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"peer-sharing\">Peer Sharing<a class=\"hash-link\" href=\"#peer-sharing\" title=\"Direct link to heading\">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early\nimplementation which will be reviewed and analysed in next weeks.  We started\nworking on <code>cardano-node</code> integration.  We need\n<a href=\"https://github.com/input-output-hk/cardano-node/pull/4392\" target=\"_blank\" rel=\"noopener noreferrer\">PR #4392</a> to be merged\nbefore such integration will be able to land in <code>cardano-node</code>, although this\nis <em>not blocking</em> us currently.  See more at:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4019\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network#4019</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"eclipse-evasion\">Eclipse Evasion<a class=\"hash-link\" href=\"#eclipse-evasion\" title=\"Direct link to heading\">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and\nNick Frisby from the consensus team.  We discussed high lever design of the\neclipse evasion scheme, which is important for the design and implementation of\n<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"io-sim\">IO-Sim<a class=\"hash-link\" href=\"#io-sim\" title=\"Direct link to heading\">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.\nA single <a href=\"https://github.com/input-output-hk/io-sim/pull/32\" target=\"_blank\" rel=\"noopener noreferrer\">PR</a> which added\na few missing instances of the <code>STM</code> monad.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-source\">Open Source<a class=\"hash-link\" href=\"#open-source\" title=\"Direct link to heading\">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to\naccept contributions from 3rd parties).</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mithril-cardano-integration\">Mithril Cardano Integration<a class=\"hash-link\" href=\"#mithril-cardano-integration\" title=\"Direct link to heading\">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate\nmithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>\ndiffusion layer.</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-28-network",
+            "title": "Network Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-10-28T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2022-10-28-performance-and-tracing",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>The new tracing system public release is getting closer, as we're resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-28-performance-and-tracing",
+            "title": "Performance & Tracing Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-28T00:00:00.000Z",
+            "author": {
+                "name": "Serge Kosyrev",
+                "url": "https://github.com/deepfire"
+            },
+            "tags": [
+                "performance-tracing"
+            ]
+        },
+        {
+            "id": "2022-08-12-sre",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra\nwith Cicero, and a new version of Spongix.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"openziti\">OpenZiti<a class=\"hash-link\" href=\"#openziti\" title=\"Direct link to heading\">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href=\"https://github.com/input-output-hk/bitte/compare/zt\" target=\"_blank\" rel=\"noopener noreferrer\">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href=\"https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994\" target=\"_blank\" rel=\"noopener noreferrer\">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,\nwe're making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte\nclusters utilizing a Ziti ZTNA network overlay to bridge the networking of\nthe two environments and get IAM extension to Equinix machine for Nomad\nclient onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,\nController, Edge Tunnel, and Router is now at [<a href=\"https://github.com/johnalotoski/openziti-bins\" target=\"_blank\" rel=\"noopener noreferrer\">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with\nno issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and\ncontroller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul\nservices</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cicero--tullia-integrations\">Cicero &amp; Tullia Integrations<a class=\"hash-link\" href=\"#cicero--tullia-integrations\" title=\"Direct link to heading\">​</a></h3><ul><li>Added webhook for [<a href=\"https://github.com/input-output-hk/haskell.nix\" target=\"_blank\" rel=\"noopener noreferrer\">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href=\"https://github.com/input-output-hk/cardano-addresses/pull/205\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href=\"https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href=\"https://github.com/input-output-hk/abcirdc/pull/104\" target=\"_blank\" rel=\"noopener noreferrer\">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href=\"https://github.com/input-output-hk/cicero/pull/66\" target=\"_blank\" rel=\"noopener noreferrer\">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href=\"https://github.com/input-output-hk/plutus\" target=\"_blank\" rel=\"noopener noreferrer\">plutus</a>]\n[<a href=\"https://github.com/input-output-hk/cardano-prelude\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-prelude</a>], and [<a href=\"https://github.com/input-output-hk/abcirdc\" target=\"_blank\" rel=\"noopener noreferrer\">abcirdc</a>].</li><li>Merged [<a href=\"https://github.com/input-output-hk/cardano-base/pull/323\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href=\"https://github.com/input-output-hk/cardano-ogmios/pull/5\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href=\"https://github.com/input-output-hk/cardano-explorer-app/pull/427\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3097\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href=\"https://github.com/input-output-hk/cardano-node/pull/4489\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-node-pull-4489</a>] to add Tullia and Cicero, including\nOS-agnostic jobs.</li><li>Opened [<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4108\" target=\"_blank\" rel=\"noopener noreferrer\">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href=\"https://github.com/input-output-hk/plutus/pull/4918\" target=\"_blank\" rel=\"noopener noreferrer\">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href=\"https://github.com/input-output-hk/abcirdc/pull/97\" target=\"_blank\" rel=\"noopener noreferrer\">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cicero--tullia-features\">Cicero &amp; Tullia Features<a class=\"hash-link\" href=\"#cicero--tullia-features\" title=\"Direct link to heading\">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href=\"https://github.com/input-output-hk/cardano-addresses\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-addresses</a>] build\ncorrectly.</li><li>Better tullia CUE lib default for tags [<a href=\"https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245\" target=\"_blank\" rel=\"noopener noreferrer\">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>'s upstreams. This is now\nconsidered a public cache again, and without it some Cicero evaluations had\nto build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in\nJSON files.</li><li>Fixed running into kernel arg limit by reading tullia's DAG from a file</li><li>Merged [<a href=\"https://github.com/input-output-hk/tullia/pull/9\" target=\"_blank\" rel=\"noopener noreferrer\">tullia-pull-9</a>] that fixes several issues related to error reporting.\nand escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"spongix\">Spongix<a class=\"hash-link\" href=\"#spongix\" title=\"Direct link to heading\">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports\nthe full HTTP binary cache protocol but still lacks comprehensive testing and\nsome tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so\nSpongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"bugs\">Bugs<a class=\"hash-link\" href=\"#bugs\" title=\"Direct link to heading\">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status\nto get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for\ncodependent actions.</li><li>Fixed tullia task order bug in [<a href=\"https://github.com/input-output-hk/cardano-addresses\" target=\"_blank\" rel=\"noopener noreferrer\">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href=\"https://github.com/input-output-hk/abcirdc\" target=\"_blank\" rel=\"noopener noreferrer\">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href=\"https://github.com/input-output-hk/tullia/pull/7\" target=\"_blank\" rel=\"noopener noreferrer\">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href=\"https://github.com/input-output-hk/bitte-cells/pull/40\" target=\"_blank\" rel=\"noopener noreferrer\">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related\nto token rotation.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-08-12-sre",
+            "title": "SRE Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-28T00:00:00.000Z",
+            "author": {
+                "name": "Michael Fellinger",
+                "url": "https://github.com/manveru"
+            },
+            "tags": [
+                "sre"
+            ]
+        },
+        {
+            "id": "2022-10-27-crypto",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-overview\">High level overview<a class=\"hash-link\" href=\"#high-level-overview\" title=\"Direct link to heading\">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to\nmeeting the <a href=\"https://github.com/input-output-hk/cardano-base/issues/315\" target=\"_blank\" rel=\"noopener noreferrer\">acceptance criteria</a> in cardano-base,\nwhich lacks some editorial comments on the style of dQuandrant's PR, the inclusion of one additional test, and\nwe are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,\nbut also progressing on the implementation.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"low-level-overview\">Low level overview<a class=\"hash-link\" href=\"#low-level-overview\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"secp-built-ins\">SECP built-ins<a class=\"hash-link\" href=\"#secp-built-ins\" title=\"Direct link to heading\">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href=\"https://github.com/input-output-hk/cardano-base/pull/313\" target=\"_blank\" rel=\"noopener noreferrer\">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href=\"https://github.com/cardano-foundation/CIPs/pull/250\" target=\"_blank\" rel=\"noopener noreferrer\">PR 250</a> was merged</li><li>The unit-tests <a href=\"https://github.com/input-output-hk/cardano-base/pull/320\" target=\"_blank\" rel=\"noopener noreferrer\">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"kes-agent\">KES agent<a class=\"hash-link\" href=\"#kes-agent\" title=\"Direct link to heading\">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-27-crypto",
+            "title": "Crypto Team Update",
+            "summary": "High level overview",
+            "date_modified": "2022-10-27T00:00:00.000Z",
+            "author": {
+                "name": "Iñigo Querejeta Azurmendi",
+                "url": "https://github.com/iquerejeta"
+            },
+            "tags": [
+                "crypto"
+            ]
+        },
+        {
+            "id": "2022-10-21-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the\nnew HeadV1 specification, completing a list the of identified gaps between\nspecification and implementation while doing so. In the wake of the recent\ndemonstration of SundaeSwap running their DEX in a Hydra Head, they met with\nthem to capture feature ideas &amp; incorporate their feedback on the roadmap, as\nwell as potential research avenues.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href=\"https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022\" target=\"_blank\" rel=\"noopener noreferrer\">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href=\"https://github.com/input-output-hk/hydra-poc/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href=\"https://github.com/input-output-hk/hydra-poc/issues/538\" target=\"_blank\" rel=\"noopener noreferrer\">#538</a> <a href=\"https://github.com/input-output-hk/hydra-poc/pull/562\" target=\"_blank\" rel=\"noopener noreferrer\">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href=\"https://github.com/input-output-hk/hydra-poc/issues/187\" target=\"_blank\" rel=\"noopener noreferrer\">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-21-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-21T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-10-19-node-cli-api",
+            "content_html": "<h1>2022-10-19 - 2022-11-01</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node's mempool for the following information:</p><ul><li>Ask the node about the current mempool's capacity and sizes</li><li>Request the next transaction from the mempool's current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h2><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4508\" target=\"_blank\" rel=\"noopener noreferrer\">Release 1.35.4</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4276\" target=\"_blank\" rel=\"noopener noreferrer\">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4538\" target=\"_blank\" rel=\"noopener noreferrer\">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4516\" target=\"_blank\" rel=\"noopener noreferrer\">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4482\" target=\"_blank\" rel=\"noopener noreferrer\">Return Lovelace for calculateMinimumUTxO</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4554\" target=\"_blank\" rel=\"noopener noreferrer\">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4546\" target=\"_blank\" rel=\"noopener noreferrer\">Reduce exposed modules in cardano-api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4568\" target=\"_blank\" rel=\"noopener noreferrer\">Add ToJSON and FromJSON instances for Address</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4565\" target=\"_blank\" rel=\"noopener noreferrer\">Export TxIns type alias from Cardano.Api</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4534\" target=\"_blank\" rel=\"noopener noreferrer\">Export more generators from cardano-api</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-submit-api\">cardano-submit-api<a class=\"hash-link\" href=\"#cardano-submit-api\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4566\" target=\"_blank\" rel=\"noopener noreferrer\">Add tx_submit_fail_count metric</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4549\" target=\"_blank\" rel=\"noopener noreferrer\">Upgrade to cabal-3.8.1.0</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4613\" target=\"_blank\" rel=\"noopener noreferrer\">Update building-the-node-using-nix.md</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-testnet\">cardano-testnet<a class=\"hash-link\" href=\"#cardano-testnet\" title=\"Direct link to heading\">​</a></h3><ul><li>None</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4279\" target=\"_blank\" rel=\"noopener noreferrer\">Multiple pools support in query stake snapshot</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4250\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query leadership schedule command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4179\" target=\"_blank\" rel=\"noopener noreferrer\">Optimise query stake snapshot command</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/3819\" target=\"_blank\" rel=\"noopener noreferrer\">Debug output for transaction submit</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-19-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-19T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-10-18-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High-level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for\ndifferent aspects of the UTxO HD prototype: era transitions, mempool, and\nbacking store. Thanks to these tests we were able to uncover a bug in the\nprototype. On the Genesis front, we benchmarked a different version of the\nChainSync jumping prototype to try to improve its performance, but this did not\nresult in any noticeable speedup.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-status-report\">High-level status report<a class=\"hash-link\" href=\"#high-level-status-report\" title=\"Direct link to heading\">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This\nuncovered a bug in the range-read implementation of the LMDB backing\nstore.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that\nspreads out the ChainSync updates over a longer period of time. This did not\nresult in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no\nconclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"finish-the-utxo-hd-prototype\">Finish the UTxO HD prototype<a class=\"hash-link\" href=\"#finish-the-utxo-hd-prototype\" title=\"Direct link to heading\">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged\nthe <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4049\" target=\"_blank\" rel=\"noopener noreferrer\">mempool\nrewrite</a>.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"era-transition-property-tests\">Era transition property tests<a class=\"hash-link\" href=\"#era-transition-property-tests\" title=\"Direct link to heading\">​</a></h4><p>We started implementing <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4043\" target=\"_blank\" rel=\"noopener noreferrer\">Cardano era transition property\ntests</a>,\nwhich are needed for making sure that the ledger tables get updated in the\nright way when we move from one era to the next. There are at the moment two\nimportant transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron\nstate (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding\nthe remaining ones.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"mempool-state-machine-tests\">Mempool state-machine tests<a class=\"hash-link\" href=\"#mempool-state-machine-tests\" title=\"Direct link to heading\">​</a></h4><p>We started implementing <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4044\" target=\"_blank\" rel=\"noopener noreferrer\">state-machine property tests for the\nmempool</a>.\nThe mempool is currently tested via pure property tests, and use a ledger\nstate without tables. With the introduction of UTxO HD, testing the concurrent\nbehavior of the mempool became of crucial importance (eg now we have to\nacquire locks to flush the backing store). In addition, we need to test a\nledger state with tables. These needs led to the creation of a new set of\nproperty tests. In particular we aim to run parallel state-machine tests that\nexercise the mempool in a way similar to how the node would make use of it.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"backing-store-property-tests\">Backing store property tests<a class=\"hash-link\" href=\"#backing-store-property-tests\" title=\"Direct link to heading\">​</a></h4><p>We started working on <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4081\" target=\"_blank\" rel=\"noopener noreferrer\">state-machine tests for the backing\nstore</a> that UTxO\nHD uses. The property tests uncovered errors in the range-reads implementation\nof the LMDB backing store. To facilitate fixing this bug, we made\n<a href=\"https://github.com/input-output-hk/lmdb-simple/pull/1\" target=\"_blank\" rel=\"noopener noreferrer\">changes</a> to the Haskell\nLMDB bindings.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"benchmarking-the-csj-prototype\">Benchmarking the CSJ prototype<a class=\"hash-link\" href=\"#benchmarking-the-csj-prototype\" title=\"Direct link to heading\">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by\nusing more capabilities, we implemented a way to spread out the ChainSync\nupdates over a larger period instead of firing them all at the same time. This\ndidn't result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo\npeer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule\nout/confirm overhead by non-ChainSync (mainly BlockFetch) related components.\nThis results in era-specific behavior (speed is like the prototype in Byron, but\nlike the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and\ncontinuing a good part into Shelley (with the dashed line indicating the\nByron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg\" width=\"654\" height=\"459\" class=\"img_ev3q\"></p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-18-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High-level summary",
+            "date_modified": "2022-10-18T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-10-14-hydra",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks \"past the opening of a Head\". We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-did-the-team-achieve-this-week\">What did the team achieve this week<a class=\"hash-link\" href=\"#what-did-the-team-achieve-this-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Last week we thought we were done with <a href=\"https://hydra.family/head-protocol/adr/18/\" target=\"_blank\" rel=\"noopener noreferrer\">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href=\"https://github.com/input-output-hk/hydra-poc/issues/187\" target=\"_blank\" rel=\"noopener noreferrer\">#187</a> in response.</li><li>Enhanced CI to publish test results <a href=\"https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results\" target=\"_blank\" rel=\"noopener noreferrer\">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href=\"https://github.com/input-output-hk/hydra-poc/issues/200\" target=\"_blank\" rel=\"noopener noreferrer\">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"what-are-the-goals-of-next-week\">What are the goals of next week<a class=\"hash-link\" href=\"#what-are-the-goals-of-next-week\" title=\"Direct link to heading\">​</a></h2><ul><li>Get backup/recovery <a href=\"https://github.com/input-output-hk/hydra-poc/issues/187\" target=\"_blank\" rel=\"noopener noreferrer\">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href=\"https://github.com/input-output-hk/hydra-poc/issues/452\" target=\"_blank\" rel=\"noopener noreferrer\">#452</a></li><li>Have the CI build macos artifacts</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-14-hydra",
+            "title": "Hydra Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-14T00:00:00.000Z",
+            "author": {
+                "name": "Sebastian Nagel",
+                "url": "https://github.com/ch1bo"
+            },
+            "tags": [
+                "hydra"
+            ]
+        },
+        {
+            "id": "2022-10-14-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>The ledger team is still primarily focused on addressing\n<a href=\"https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22\" target=\"_blank\" rel=\"noopener noreferrer\">technical</a>\n<a href=\"https://github.com/input-output-hk/cardano-ledger/projects/3\" target=\"_blank\" rel=\"noopener noreferrer\">debt</a>.\nWe now have the infrastructure for versioning our serialization schemes,\nwhich we continue to put into action.\nWe have made first steps towards getting proper support for the\n<a href=\"https://github.com/input-output-hk/formal-ledger-specifications\" target=\"_blank\" rel=\"noopener noreferrer\">formal ledger repository</a>\n(in particular, we've added nix builds and\ncontinuous integration support).\nWe are wrapping up an investigation of the performance of a critical\nfunction used by the consensus layer for leader checks.\nFinally, we are improving the packaging and versioning of our code.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"lower-level-summary\">Lower level summary<a class=\"hash-link\" href=\"#lower-level-summary\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed-technical-debt\">Completed Technical Debt<a class=\"hash-link\" href=\"#completed-technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of\nour code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that\nmuch of it should live in <code>cardano-ledger-core</code>.\nWe continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3059\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.\nThe inability to do this has caused us a lot difficulties,\nsuch as [<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3003\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3003</a>], [<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2965\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2965</a>] and [<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2444\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2444</a>].\nWe are still in the process of switching to the versioned serialization scheme\n(such as [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3078\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3078</a>]),\nbut the infrastructure was completed in [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3063\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href=\"https://github.com/input-output-hk/formal-ledger-specifications/pull/19\" target=\"_blank\" rel=\"noopener noreferrer\">pull-19</a>]</li><li>A separate team is helping bring support for\n<a href=\"https://github.com/input-output-hk/cardano-haskell-packages\" target=\"_blank\" rel=\"noopener noreferrer\">CHaP</a>\nto all the cardano-node repositories.\nWe have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the\ncardano-node repositories to work with ghc 9.2.4.\nWe have been helping out with this effort.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress-technical-debt\">In-progress Technical Debt<a class=\"hash-link\" href=\"#in-progress-technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We also have several fairly large pull-requests in review\nthat we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,\nwe continue to remove <code>HasField</code> instances in place of using micro-lenses.\nThe protocol parameters, in particular, are being worked on. [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3045\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3062\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance\nof the TICKF transition. We have some improvements to the computatation\nas well. [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3068\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3073\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href=\"https://github.com/input-output-hk/formal-ledger-specifications/pull/20\" target=\"_blank\" rel=\"noopener noreferrer\">pull-20</a>]</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-14-ledger",
+            "title": "Ledger Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-14T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-10-05-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"high-level-summary\">High level summary<a class=\"hash-link\" href=\"#high-level-summary\" title=\"Direct link to heading\">​</a></h2><p>During the past two weeks, the consensus team worked on improving the\nperformance of the ChainSync jumping logic, which is needed for Genesis. We also\nrewrote the implementation of the mempool in the UTxO HD prototype which solved\nthe issues that prevented us from running system level benchmarks. Also on the\nUTxO HD front, we have an improved implementation of the sequence-of-differences\n(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for\nthe UTxO HD feature.</p><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the\nbaseline performance. In particular, the prototype seems to benefit from the\nextra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This\nrewrite was required due to performance problems we observed when running the\n<a href=\"https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51\" target=\"_blank\" rel=\"noopener noreferrer\">workbench</a>.\nThese performance problems prevented us from running system level benchmarks.\nThe rewrite solved these issues. After the <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4049\" target=\"_blank\" rel=\"noopener noreferrer\">UTxO-HD: mempool\nrewrite</a> PR is\nmerged, we will contact the Benchmarking team so that they run the system\nlevel benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was\nintegrated into the UTxO HD prototype. It is pending\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4036\" target=\"_blank\" rel=\"noopener noreferrer\">review</a> and\nwe also need to run replay and syncing benchmarks to confirm that this will\ndeliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3944\" target=\"_blank\" rel=\"noopener noreferrer\">The UTxO HD prototype\ninspection</a>\nresulted in a <a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4045\" target=\"_blank\" rel=\"noopener noreferrer\">list of\ntests</a>\nneeded for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"additional-information\">Additional information<a class=\"hash-link\" href=\"#additional-information\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,\nwe tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and\ncontinuing a good part into Shelley (with the dashed line indicating the\nByron-to-Shelley transition).</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg\" width=\"654\" height=\"459\" class=\"img_ev3q\"></p><p>Further work includes whether we can tune the prototype to better handle few\ncapabilities, or to adapt the default number of capabilities (potentially just\nwhile syncing).</p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-05-consensus",
+            "title": "Consensus Team Update",
+            "summary": "High level summary",
+            "date_modified": "2022-10-05T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-10-04-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"dbsync-update\">DBSync Update<a class=\"hash-link\" href=\"#dbsync-update\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"fast-restarts\">Fast restarts<a class=\"hash-link\" href=\"#fast-restarts\" title=\"Direct link to heading\">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1266\" target=\"_blank\" rel=\"noopener noreferrer\">1266</a>. This has been\none of db-sync main objectives for this period. Restarts are now very fast,\nbecause db-sync deletes almost nothing from the db, it just replays the ledger rules until it\nreaches the tip of the db. The fix also improves reconnection speed, in cases where the node\nrestarts or the connection is temporarily lost. It also speeds up even more in cases where due to a\ndeployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"property-based-testing\">Property based testing<a class=\"hash-link\" href=\"#property-based-testing\" title=\"Direct link to heading\">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1269\" target=\"_blank\" rel=\"noopener noreferrer\">1269</a>. These tests use empty or\nalmost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class=\"codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">RollForward Int</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">RollBack BlockNo</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">StopDBSync</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">StartDBSync</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">RestartNode</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">AssertBlockNo BlockNo</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block\nthat fits on the current chain. These real commands are executed against db-sync using the mock\nchain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync\nwhich looks like this:</p><div class=\"language-haskell codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-haskell codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">  Model</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    { serverTip :: BlockNo</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    , dbSyncTip :: BlockNo</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    , dbSynsIsOn :: Bool</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    , dbSynsHasSynced :: Bool</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">    }</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"tech-debt\">Tech Debt<a class=\"hash-link\" href=\"#tech-debt\" title=\"Direct link to heading\">​</a></h3><p>We handled a number of tech debt in\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1275\" target=\"_blank\" rel=\"noopener noreferrer\">1275</a>\nThis improves the code format of db-sync, deletes many queries that were never used and groups the\nothers. This tech debt resolution not only improves the experience of working in db-sync, but can\nfacilitate some of our other objectives, as it makes it very explicit which queries are used\nduring syncing and which indexes are necessary.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"smash\">Smash<a class=\"hash-link\" href=\"#smash\" title=\"Direct link to heading\">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1276\" target=\"_blank\" rel=\"noopener noreferrer\">1276</a>.\nThe issue which is described in\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/issues/1270\" target=\"_blank\" rel=\"noopener noreferrer\">1270</a></p>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-04-db-sync",
+            "title": "DB Sync Team Update",
+            "summary": "DBSync Update",
+            "date_modified": "2022-10-04T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2022-10-04-node-cli-api",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"node-api-cli-update\">Node-Api-Cli Update<a class=\"hash-link\" href=\"#node-api-cli-update\" title=\"Direct link to heading\">​</a></h2><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"2022-10-04---2022-10-18\">2022-10-04 - 2022-10-18<a class=\"hash-link\" href=\"#2022-10-04---2022-10-18\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive Summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h3><p>The majority of the team's time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"completed\">Completed<a class=\"hash-link\" href=\"#completed\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4504\" target=\"_blank\" rel=\"noopener noreferrer\">GHC 9.2.4 preparations</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli\" title=\"Direct link to heading\">​</a></h4><ul><li>[Serenity]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4491\" target=\"_blank\" rel=\"noopener noreferrer\">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api\">cardano-api<a class=\"hash-link\" href=\"#cardano-api\" title=\"Direct link to heading\">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4501\" target=\"_blank\" rel=\"noopener noreferrer\">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">cardano-node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h4><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4526\" target=\"_blank\" rel=\"noopener noreferrer\">Fix MacOS GHA CI</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"in-progress\">In Progress<a class=\"hash-link\" href=\"#in-progress\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4508\" target=\"_blank\" rel=\"noopener noreferrer\">Release 1.34.4</a></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-cli-1\">cardano-cli<a class=\"hash-link\" href=\"#cardano-cli-1\" title=\"Direct link to heading\">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4538\" target=\"_blank\" rel=\"noopener noreferrer\">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href=\"https://github.com/input-output-hk/cardano-node/pull/4516\" target=\"_blank\" rel=\"noopener noreferrer\">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href=\"https://github.com/input-output-hk/cardano-node/pull/4537\" target=\"_blank\" rel=\"noopener noreferrer\">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4431\" target=\"_blank\" rel=\"noopener noreferrer\">Infer protocol params in transaction build</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4408\" target=\"_blank\" rel=\"noopener noreferrer\">Allow assembling transactions with no witnesses</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4276\" target=\"_blank\" rel=\"noopener noreferrer\">Add tx-mempool command to CLI</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-api-1\">cardano-api<a class=\"hash-link\" href=\"#cardano-api-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4482\" target=\"_blank\" rel=\"noopener noreferrer\">Return Lovelace for calculateMinimumUTxO</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4458\" target=\"_blank\" rel=\"noopener noreferrer\">Make TxBodyContent an instance of Monoid</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4450\" target=\"_blank\" rel=\"noopener noreferrer\">Auto-balance multiasset transactions</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node-1\">cardano-node<a class=\"hash-link\" href=\"#cardano-node-1\" title=\"Direct link to heading\">​</a></h3><ul><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4263\" target=\"_blank\" rel=\"noopener noreferrer\">Stop running CI when the only changes are to docs</a></li><li><a href=\"https://github.com/input-output-hk/cardano-node/pull/4341\" target=\"_blank\" rel=\"noopener noreferrer\">Rename TestEnableDevelopmentHardForkEras</a></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-10-04-node-cli-api",
+            "title": "Node API & CLI Team Update",
+            "summary": "Node-Api-Cli Update",
+            "date_modified": "2022-10-04T00:00:00.000Z",
+            "author": {
+                "name": "Jordan Millar",
+                "url": "https://github.com/Jimbo4350"
+            },
+            "tags": [
+                "cli-api"
+            ]
+        },
+        {
+            "id": "2022-09-30-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ledger-update\">Ledger Update<a class=\"hash-link\" href=\"#ledger-update\" title=\"Direct link to heading\">​</a></h2><p>We have continued focusing nearly entirely on addressing technical debt.\nA lot of design work has begun for the next ledger era,\nbut we do not yet have anything concrete to share.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt-issues-completed\">Technical debt issues completed<a class=\"hash-link\" href=\"#technical-debt-issues-completed\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/1676\" target=\"_blank\" rel=\"noopener noreferrer\">issue-1676</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/2992\" target=\"_blank\" rel=\"noopener noreferrer\">pull-2992</a>] We have finally removed the ledger dependency on the\n<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency\nthat we did not want to maintain. It was a bit difficult to remove, and we had\nto coordinate removing it from cardano-base.\nA lot ended up going into <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/2992\" target=\"_blank\" rel=\"noopener noreferrer\">pull-2992</a>, due to the coordination effort, and we ended\nup updating Plutus as well.\nThis means that we've now also made a lot of progress on the problematic cost model serialization\nissues described in <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2902\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2902</a>.\nIn particular, after we resolve <a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3014\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3014</a>, we will not have to wait an epoch before\nreleasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3046\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3046</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3055\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3047\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3047</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3054\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3044\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates\nwere adding approximately 20 minutes to our compile time!</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2932\" target=\"_blank\" rel=\"noopener noreferrer\">issue-2932</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3036\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we\nhave added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.\nMost classes defined in the era should go in this new module.\nWe also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>\nmodules from each era.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt-in-progress\">Technical debt in progress<a class=\"hash-link\" href=\"#technical-debt-in-progress\" title=\"Direct link to heading\">​</a></h3><ul><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3034\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3034</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3035\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3035</a>][<a href=\"https://github.com/input-output-hk/cardano-node/issues/4421\" target=\"_blank\" rel=\"noopener noreferrer\">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where\nall the time is being spent on executing the <code>TICKF</code> transition.\nThe consolidation of the per-stake-credential stake distribution to the per-stake-pool\ndistribution does seem to account for a large amount of time (near a second as written, which we\nhave down to about half a second with some optimizations),\nbut this does not account for everything.\nApplying the reward update may also be a big contributing factor.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3033\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3033</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3038\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3038</a>][<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3041\" target=\"_blank\" rel=\"noopener noreferrer\">pull-3041</a>] A separate team is working on upgrading all the\ncardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new\n<a href=\"https://github.com/input-output-hk/formal-ledger-specifications\" target=\"_blank\" rel=\"noopener noreferrer\">formal ledger model</a>\ndo not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/3014\" target=\"_blank\" rel=\"noopener noreferrer\">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger\nserializers.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-30-ledger",
+            "title": "Ledger Team Update",
+            "summary": "Ledger Update",
+            "date_modified": "2022-09-30T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-09-27-network",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"network-update\">Network Update<a class=\"hash-link\" href=\"#network-update\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ouroboros-network\">Ouroboros Network<a class=\"hash-link\" href=\"#ouroboros-network\" title=\"Direct link to heading\">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See\n<a href=\"https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan\" target=\"_blank\" rel=\"noopener noreferrer\">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in\nprogress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3980\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept\n<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3905\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/cardano-node#3905</a> in\nthe simulation testing of diffusion\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4004\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.\nWhen deploying we found an issue in the\n<a href=\"https://github.com/input-output-hk/cardano-node/issues/3752\" target=\"_blank\" rel=\"noopener noreferrer\"><code>RTView</code></a>.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ouroboros-consensus\">Ouroboros Consensus<a class=\"hash-link\" href=\"#ouroboros-consensus\" title=\"Direct link to heading\">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during\nintiialisation.  This was fixed in\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4015\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/ouroboros-network#4015</a>\nAs part of this pull request we also changed that all exceptions rethrown by\nthe connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"some-older-items-which-were-not-announced\">Some older items, which were not announced<a class=\"hash-link\" href=\"#some-older-items-which-were-not-announced\" title=\"Direct link to heading\">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options\nwhere not set for sockets passed through socket activation).\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3979\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/cardano-node#3979</a>\nThis fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"cardano-node\">Cardano Node<a class=\"hash-link\" href=\"#cardano-node\" title=\"Direct link to heading\">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,\n<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,\n<code>traceSocketPathConnect</code> and <code>stateDir</code> options.\n<a href=\"https://github.com/input-output-hk/cardano-node/pull/4196\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"io-sim\">IO-Sim<a class=\"hash-link\" href=\"#io-sim\" title=\"Direct link to heading\">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/2797\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#2797</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/2650\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#2650</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3436\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#3436</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/2588\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#2588</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/2587\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#2587</a></li><li><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/2586\" target=\"_blank\" rel=\"noopener noreferrer\">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href=\"https://github.com/input-output-hk/io-sim/pull/24\" target=\"_blank\" rel=\"noopener noreferrer\">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href=\"https://github.com/input-output-hk/io-sim/pull/25\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/io-sim#25</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"typed-protocols\">Typed Protocols<a class=\"hash-link\" href=\"#typed-protocols\" title=\"Direct link to heading\">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:\n<a href=\"https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem\" target=\"_blank\" rel=\"noopener noreferrer\">coot/typed-protocols-rewrite-StateToken-problem</a>.\nThat's too be resolved in order to push forward review of the redesign in\n<a href=\"https://github.com/input-output-hk/typed-protocols/pull/3\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:\n<a href=\"https://github.com/input-output-hk/typed-protocols/pull/11\" target=\"_blank\" rel=\"noopener noreferrer\">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"input-endorsers-simulation\">Input Endorsers Simulation<a class=\"hash-link\" href=\"#input-endorsers-simulation\" title=\"Direct link to heading\">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU\n(block validation). This is interesting to check that we're not overloading\nthe CPU block validation capacity, or network link capacity. Or alternatively\nto observe the behaviour in an overload situation if we set the block\ngeneration rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of\nlinks are being used at any one time, and shows that once the system \"warms\nup\" and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple\ncharts, titles etc on screen at once and scale them to whatever screen or\nvideo resolution we like without having to tweak numbers (this example is\nscaled to fit 1080HD video resolution).</p></li></ul><div style=\"width:640px;height:360px\"></div>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-27-network",
+            "title": "Network Team Update",
+            "summary": "Network Update",
+            "date_modified": "2022-09-27T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        },
+        {
+            "id": "2022-09-20-consensus",
+            "content_html": "<ul><li>We proposed a fix for the performance degradation observed when running\ndistributed multi-node benchmarks in the UTxO HD feature branch. While this\nfixed the problems observed when running local benchmarks, it broke the\n<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to\nstart redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of\ndiff-sequences required by the UTxO HD feature based on the idea of\nanti-diffs. This alternative implementation is close to being merged, and the\nnext step is to integrate this to the UTxO HD branch, so that we can run\nad-hoc replaying and syncing from scratch benchmarks and compare these with\nthe baseline. The micro-benchmarks we elaborated for the alternative\nimplementation show speedups of up to 4x, so we are optimistic about the\nperformance of replaying and syncing from scratch benchmarks, however it is\nimportant to notice that <em>due to the nature of UTxO HD</em> we will still be\nslower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for\nreview.</li><li>We implemented a prototype for the happy path of Genesis' ChainSync Jumping\n(CSJ). The prototype is slower than the baseline, however it is not the latest\nversion of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031\" target=\"_blank\" rel=\"noopener noreferrer\">stopped</a> since\npriorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/4014\" target=\"_blank\" rel=\"noopener noreferrer\">pr-4014</a>. To this end, we made use of a modified version of our\n<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano\nmainnet chain, and we can see that block tick and application take\nsubstantially longer at epoch boundaries, although there are a couple of slots\nduring an epoch in which these computations take more than normal. We notified\nthe ledger team about these findings. We will use this modified version of\n<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in\nperformance observed in the benchmarks. We run the <code>make forge-stress</code>\nbenchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn't make a notable difference in the outcome\n(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction\nvalidation which is a violation of the <code>LocalTxSubmission</code> protocol\ncontract and therefore if we continued on that route, the impact would\nhave been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal\nstate was buggy and under certain circumstances it seemed to lock.\nReverting the mempool internal state to be stored in a <code>TVar</code> seems to\nsolve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones\nfrom the baseline.</p></li></ul></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3997\" target=\"_blank\" rel=\"noopener noreferrer\">The anti-diff prototype (PR\n#3997)</a> has\nbeen reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/4010\" target=\"_blank\" rel=\"noopener noreferrer\">issue\n#4010</a>)\nto integrate the anti-diff prototype in the various <code>consensus</code> packages\nwas created. A first version of the integration exists, and all tests\npass. A next step is to get some indication of the \"real\" performance gain\nby profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync\nJumping (CSJ) prototype (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3987\" target=\"_blank\" rel=\"noopener noreferrer\">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)\nnumber of servers periodically while syncing. These servers are offered\njump requests via the ChainSync protocol (hence the name), which they can\naccept or decline. If a peer declines, the Genesis rule allows us to\ndetermine whether a node actually has a better chain.</p></li><li><p>The \"happy path\" is when no peer declines a jump. We want this to have\nclose to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to\ntest in various configurations (number of peers, latency, bandwidth) to\ntune the performance of ChainSync jumping, i.e. how complicated our logic\nof choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to\n<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading=\"lazy\" src=\"/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg\" width=\"654\" height=\"459\" class=\"img_ev3q\"></p><p>It is slower by about ~30%, but it is not the latest version of the\nprototype, and the jump interval is very small, making CSJ more of a\nbottleneck.</p></li></ul></li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3990\" target=\"_blank\" rel=\"noopener noreferrer\">PR 3990</a>).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus",
+            "title": "Consensus Team Update",
+            "summary": "- We proposed a fix for the performance degradation observed when running",
+            "date_modified": "2022-09-20T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-09-19-db-sync",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"dbsync-update\">DBSync Update<a class=\"hash-link\" href=\"#dbsync-update\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-tag\">New Tag<a class=\"hash-link\" href=\"#new-tag\" title=\"Direct link to heading\">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last\nrelease 13.0.4. It is currently under testing.\nThe Changelog is\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305\" target=\"_blank\" rel=\"noopener noreferrer\">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn't include a total collateral field.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1248\" target=\"_blank\" rel=\"noopener noreferrer\">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1247\" target=\"_blank\" rel=\"noopener noreferrer\">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but\ncould result in the wrong CBOR encoding being inserted.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1217\" target=\"_blank\" rel=\"noopener noreferrer\">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs\nfor different networks, these are directly fetched from the cardano world.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1254\" target=\"_blank\" rel=\"noopener noreferrer\">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1260\" target=\"_blank\" rel=\"noopener noreferrer\">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"open-source\">Open source<a class=\"hash-link\" href=\"#open-source\" title=\"Direct link to heading\">​</a></h3><p>We made the db-sync <a href=\"https://github.com/orgs/input-output-hk/projects/52/views/1\" target=\"_blank\" rel=\"noopener noreferrer\">board public</a>, so\neveryone can have access on the issues we prioritise.\nWe also added new tasks to the board, some of them could be approachable to newcomers or people who\nwant to contribute.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"progress-on-tech-debt-and-new-features\">Progress on tech debt and new features<a class=\"hash-link\" href=\"#progress-on-tech-debt-and-new-features\" title=\"Direct link to heading\">​</a></h3><ul><li><p><a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1223\" target=\"_blank\" rel=\"noopener noreferrer\">1223</a> was merged, which removes the\nforeign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1250\" target=\"_blank\" rel=\"noopener noreferrer\">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here\n<a href=\"https://github.com/input-output-hk/cardano-db-sync/pull/1266\" target=\"_blank\" rel=\"noopener noreferrer\">1266</a>.\nThis allows db-sync to restart much faster, without the need to delete data and reinsert them. In\nthe future it can also facilitate migrations in cases where the ledger snapshots have a breaking\nchange, without the need to resync everything from genesis.</p></li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-19-db-sync",
+            "title": "DB Sync Team Update",
+            "summary": "DBSync Update",
+            "date_modified": "2022-09-19T00:00:00.000Z",
+            "author": {
+                "name": "Kostas Dermentzis",
+                "url": "https://github.com/kderme"
+            },
+            "tags": [
+                "db-sync"
+            ]
+        },
+        {
+            "id": "2022-09-16-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ledger-update\">Ledger Update<a class=\"hash-link\" href=\"#ledger-update\" title=\"Direct link to heading\">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3032\" target=\"_blank\" rel=\"noopener noreferrer\">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of\nconfusion), and added some related support to the fledgling ledger API.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3016\" target=\"_blank\" rel=\"noopener noreferrer\">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3017\" target=\"_blank\" rel=\"noopener noreferrer\">3017</a>.</li><li>We removed code duplication related to the input data hashes.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3018\" target=\"_blank\" rel=\"noopener noreferrer\">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our\nCI to time out.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3020\" target=\"_blank\" rel=\"noopener noreferrer\">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3023\" target=\"_blank\" rel=\"noopener noreferrer\">3023</a>,\n<a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3031\" target=\"_blank\" rel=\"noopener noreferrer\">3031</a>,\nand <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3028\" target=\"_blank\" rel=\"noopener noreferrer\">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3024\" target=\"_blank\" rel=\"noopener noreferrer\">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific\nchoice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3027\" target=\"_blank\" rel=\"noopener noreferrer\">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric\ntypes that will compose better in the future and which simplifies the constraints.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3029\" target=\"_blank\" rel=\"noopener noreferrer\">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a\ngiven transaction. This is a much needed cleanup to prevent future mistakes.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3019\" target=\"_blank\" rel=\"noopener noreferrer\">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to\nfail in CI.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3039\" target=\"_blank\" rel=\"noopener noreferrer\">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major\nprotocol version, and also address a\n<a href=\"https://github.com/input-output-hk/cardano-ledger/issues/2902\" target=\"_blank\" rel=\"noopener noreferrer\">problem</a>\nthat we current have evolving the cost models.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3030\" target=\"_blank\" rel=\"noopener noreferrer\">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely\nthe lack of some serialization instances.\nSee <a href=\"https://github.com/input-output-hk/cardano-ledger/pull/3022\" target=\"_blank\" rel=\"noopener noreferrer\">3022</a>.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-16-ledger",
+            "title": "Ledger Team Update",
+            "summary": "Ledger Update",
+            "date_modified": "2022-09-16T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-09-01-ledger",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"ledger-update\">Ledger Update<a class=\"hash-link\" href=\"#ledger-update\" title=\"Direct link to heading\">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been\nfocused on two main things: a new ledger era and technical debt.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"new-minimal-ledger-era\">New minimal ledger era<a class=\"hash-link\" href=\"#new-minimal-ledger-era\" title=\"Direct link to heading\">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical\nto the <code>babbage</code> era. This has been the first time that we have been able to see\nwhat a minimal ledger era looks like. We have finished this task, modulo any\nintegration issues that might come up. The only thing that the <code>conway</code> era\ndoes differently from the <code>babbage</code> era is provide support for rotating\nthe master keys using the hardfork combinator's state translation.\nWe may end up adding features to the <code>conway</code> era, but it is a nice exercise\nseeing what it looks like to get a minimal ledger era supported in all the\ndownstream components.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"addressing-technical-debt\">Addressing technical debt<a class=\"hash-link\" href=\"#addressing-technical-debt\" title=\"Direct link to heading\">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the\nrepository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.\nWith hindsight on our side, we now have something much more organized and\neasier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more\nuniform, avoid certain confusions that plagued us, and are clearer in where\nthey are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you\ndo not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of\nvalues that can be minted in a transaction no longer allow for Lovelace\nin the type, and some functions which used to handle both timelock scripts\nand plutus script now correctly enoforce at the type level that only one of\nthem can be used.</li><li>We made our generators so that they now produce a much richer set of\nvalid serializations. There is room within CBOR to serialize the same\ndata structure in multiple ways, and it is helpful to have the generators\nuse a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-09-01-ledger",
+            "title": "Ledger Team Update",
+            "summary": "Ledger Update",
+            "date_modified": "2022-09-01T00:00:00.000Z",
+            "author": {
+                "name": "Jared Corduan",
+                "url": "https://github.com/JaredCorduan"
+            },
+            "tags": [
+                "ledger"
+            ]
+        },
+        {
+            "id": "2022-08-31-consensus",
+            "content_html": "<h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"executive-summary\">Executive summary<a class=\"hash-link\" href=\"#executive-summary\" title=\"Direct link to heading\">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A\npossible bug was identified. Work is ongoing to make sure the property-tests\ncover all the relevant cases.</li><li>We implemented and benchmarked the \"anti-diff\" prototype to speed up the UTxO\nHD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across\nseveral scenarios. Note that: <a href=\"https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html\" target=\"_blank\" rel=\"noopener noreferrer\">\"Data reported by <code>tasty-bench</code> is only of\nindicative and comparative significance.\"</a>.\nWe are investigating additional performance improvements. The \"anti-diff\"\nprototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and\n<code>ChainSync</code> jumping optimization.</li></ul><h2 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"workstreams\">Workstreams<a class=\"hash-link\" href=\"#workstreams\" title=\"Direct link to heading\">​</a></h2><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"conway\">Conway<a class=\"hash-link\" href=\"#conway\" title=\"Direct link to heading\">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3962\" target=\"_blank\" rel=\"noopener noreferrer\">Issue #3963</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3971\" target=\"_blank\" rel=\"noopener noreferrer\">PR\n#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which\ndata should be changed in the Conway era. As a result, a new technical debt\nissue was raised, which does not block the integration of the Conway era\n(<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3976\" target=\"_blank\" rel=\"noopener noreferrer\">Issue #3976</a>).</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"utxo-hd\">UTxO HD<a class=\"hash-link\" href=\"#utxo-hd\" title=\"Direct link to heading\">​</a></h3><ul><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3954\" target=\"_blank\" rel=\"noopener noreferrer\">Issue #3954</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests\" target=\"_blank\" rel=\"noopener noreferrer\">branch</a>: The functionality of a\nbacking store, which is the interface to the on-disk part of ledger state in\nUTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some\nfunctionalities remain untested, e.g., reads of ranges of keys. As such, we\nhave implemented <code>quickcheck-state-machine</code> tests that exercise backing stores\ndirectly. The tests are reusable for different backing store implementations\nbecause the tests are implementation-agnostic: Any backing store that conforms\nto the backing store interface can be plugged into the tests. Work is still\nongoing to label/monitor the tests, such that we can verify that interesting\ncases are being tested. Furthermore, a possible bug has been identified in the\nLMDB backing store with respect to range reads, though the bug has not been\nresolved yet.</p></li><li><p><a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3946\" target=\"_blank\" rel=\"noopener noreferrer\">Issue #3946</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs\" target=\"_blank\" rel=\"noopener noreferrer\">branch</a>, <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3882\" target=\"_blank\" rel=\"noopener noreferrer\">PR #3882</a>: The\n\"anti-diff\" prototype proposes an alternative approach to keeping track of\nsequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences\nare a component of the in-memory parts of the ledger state in UTxO-HD. Since\nthe consensus code often requires the cumulative diff of a sequence of diffs,\nthe current implementation \"caches\" cumulative diffs of each subtree in the\ndiff sequence. This caching allows relatively fast reconstruction of the total\ncumulative diff, but this caching proved to incur a non-negligible cost: when\nwe manipulate diff sequences through splits and appends, we force re-computing\na logarithmic number of caches. This is problematic, since we often split and\nappend in consensus: we split when we flush diffs to a backing store or when\nwe roll back blocks, and we append when pushing blocks. The new approach\nshould reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the \"anti-diff\" prototype: we\nfirst generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or\n<code>Rollback</code>) through a simulation, after which we measure the performance of\napplying the commands to a diff sequence. In this context, <code>Forward</code> means\nforwarding of values through a diff, whereas <code>Rollback</code> means switching to\na different fork by rolling back diffs/blocks and pushing new ones.\nMoreover, we compare the performance for the two implementations: the\n\"legacy\" approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the\nbenchmark's configuration to obtain more definitive results. After a\ndiscussion with @dcoutts and the consensus team about this configuration\n(e.g., number of commands generated, choice of the security parameter <code>k</code>),\nthe benchmarks should now be closer to the realistic setting. The following\nconfiguration specifies the default configuration that is used in the\nbenchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"how-to-read-results\">How to read results<a class=\"hash-link\" href=\"#how-to-read-results\" title=\"Direct link to heading\">​</a></h3><p>Note: this section uses documentation from the\n<a href=\"https://hackage.haskell.org/package/tasty-bench\" target=\"_blank\" rel=\"noopener noreferrer\">tasty-bench</a> package to\nexplain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class=\"language-text codeBlockContainer_Ckt0 theme-code-block\" style=\"--prism-color:#393A34;--prism-background-color:#f6f8fa\"><div class=\"codeBlockContent_biex\"><pre tabindex=\"0\" class=\"prism-code language-text codeBlock_bY9V thin-scrollbar\"><code class=\"codeBlockLines_e6Vv\"><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">...</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">AntiDiff:                               OK (18.27s)</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">LegacyDiff:                             OK (32.73s)</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class=\"token-line\" style=\"color:#393A34\"><span class=\"token plain\">...</span><br></span></code></pre><div class=\"buttonGroup__atx\"><button type=\"button\" aria-label=\"Copy code to clipboard\" title=\"Copy\" class=\"clean-btn\"><span class=\"copyButtonIcons_eSgA\" aria-hidden=\"true\"><svg class=\"copyButtonIcon_y97N\" viewBox=\"0 0 24 24\"><path d=\"M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z\"></path></svg><svg class=\"copyButtonSuccessIcon_LjdS\" viewBox=\"0 0 24 24\"><path d=\"M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z\"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff\nprototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),\nits predicted mean CPU time was <code>2.527</code> seconds and means of individual\nsamples do not often diverge from it further than <code>± 47</code> milliseconds\n(double standard deviation). We also configure the RTS to collect GC\nstatistics, which enables <code>tasty-bench</code> to estimate and report memory usage.\nThis data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,\n<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first\nbenchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a\ntotal of <code>544 MB</code> of memory were copied, and that the peak memory in usage\nwas <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for\nboth the anti-diff and legacy approaches: In this case, the mean CPU time\nfor the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy\napproach. Conversely, the mean CPU time for the legacy approach is\n<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will\ncall <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to\nnoise, randomness, the specific configuration parameters, and the whims\nof statistics. Data reported by <code>tasty-bench</code> is only of indicative and\ncomparative significance.</p><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"results\">Results<a class=\"hash-link\" href=\"#results\" title=\"Direct link to heading\">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and\nlegacy approaches 5 times. We run the benchmarks 5 times to get an indication\nof whether the results are similar across multiple runs. Furthermore, we\ncalculate the accompanying <em>ranges</em> (if applicable) of improvement factors and\nspeedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for\nthe anti-diff approach compared to the legacy approach.</p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"default-configuration\">Default configuration<a class=\"hash-link\" href=\"#default-configuration\" title=\"Direct link to heading\">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"no-rollbacks\">No rollbacks<a class=\"hash-link\" href=\"#no-rollbacks\" title=\"Direct link to heading\">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"only-small-rollbacks\">Only small rollbacks<a class=\"hash-link\" href=\"#only-small-rollbacks\" title=\"Direct link to heading\">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"no-rollbacks-larger-flushes-every-100-pushes\">No rollbacks, larger flushes (every 100 pushes)<a class=\"hash-link\" href=\"#no-rollbacks-larger-flushes-every-100-pushes\" title=\"Direct link to heading\">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"genesis\">Genesis<a class=\"hash-link\" href=\"#genesis\" title=\"Direct link to heading\">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and\nthe ChainSync Jumping optimization. In particular, this includes a proof\nsketch that the latter preserves liveness and safety in all cases (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3964\" target=\"_blank\" rel=\"noopener noreferrer\">Issue\n3964</a>).<ul><li>@nfrisby's main realization during this sprint was that he had been\nfocusing so far on the case where the selected chain is an extension of\nthe intersection of our peers' ChainSync candidates.</li><li>This is the main case, ie an \"absorbing\" state, but it's not the only\ncase.</li><li>The new proof sketch begins by case splitting on that predicate, and\nthat made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the \"happy path\" <code>ChainSync</code> Jumping prototype (<a href=\"https://github.com/input-output-hk/ouroboros-network/issues/3960\" target=\"_blank\" rel=\"noopener noreferrer\">Issue\n3960</a>).</li></ul><h3 class=\"anchor anchorWithStickyNavbar_LWe7\" id=\"technical-debt\">Technical debt<a class=\"hash-link\" href=\"#technical-debt\" title=\"Direct link to heading\">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..\nNightly CI runs have far more lax time constraints, which gives the option to\nrun significantly more property tests than in our regular CI. To this end, we\nmerged a PR to easily adapt the number of tests globally (<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3947\" target=\"_blank\" rel=\"noopener noreferrer\">PR\n#3947</a>).</li></ul>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-08-31-consensus",
+            "title": "Consensus Team Update",
+            "summary": "Executive summary",
+            "date_modified": "2022-08-31T00:00:00.000Z",
+            "author": {
+                "name": "Damian Nadales",
+                "url": "https://github.com/dnadales"
+            },
+            "tags": [
+                "consensus"
+            ]
+        },
+        {
+            "id": "2022-08-12-network",
+            "content_html": "<p>The networking team took an active part in the project iteration (PI) planning\nsession, see cardano-node <a href=\"https://github.com/orgs/input-output-hk/projects/39\" target=\"_blank\" rel=\"noopener noreferrer\">backlog</a> for detailed\noutcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3859\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/ouroboros-network#3859</a> which\nsets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3852\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/ouroboros-network#3852</a>.\nThe above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and\nidentified some deployment hiccups.  We identified some bugs in the RT view\nwhich were registered by the maintainers.\n<a href=\"https://github.com/input-output-hk/ouroboros-network-ops/pull/4\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3921\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:\n<a href=\"https://github.com/input-output-hk/ouroboros-network/pull/3922\" target=\"_blank\" rel=\"noopener noreferrer\">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to\nidentify and fix a bug in the simulator.  The simulation contains 50 nodes.\nDashed lines indicate and established connection, while solid lines indicate\na TCP connection with fully open TCP window.</p></li></ul><div style=\"width:640px;height:360px\"></div>",
+            "url": "https://input-output-hk.github.io/cardano-updates/2022-08-12-network",
+            "title": "Network Team Update",
+            "summary": "The networking team took an active part in the project iteration (PI) planning",
+            "date_modified": "2022-08-12T00:00:00.000Z",
+            "author": {
+                "name": "Marcin Szamotulski",
+                "url": "https://github.com/coot"
+            },
+            "tags": [
+                "network"
+            ]
+        }
+    ]
+}
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diff --git a/images/consensus/2022-12-14-ledger-ops-benchmark.png b/images/consensus/2022-12-14-ledger-ops-benchmark.png
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diff --git a/images/consensus/2023-01-11-utxo-hd-replay-benchmarks.png b/images/consensus/2023-01-11-utxo-hd-replay-benchmarks.png
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diff --git a/images/consensus/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks.png b/images/consensus/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks.png
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diff --git a/images/consensus/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks.png b/images/consensus/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks.png
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+<!doctype html>
+<html lang="en" dir="ltr" class="blog-wrapper blog-list-page plugin-blog plugin-id-updates">
+<head>
+<meta charset="UTF-8">
+<meta name="generator" content="Docusaurus v2.2.0">
+<title data-rh="true">Cardano Development Updates | Cardano Development Updates</title><meta data-rh="true" name="viewport" content="width=device-width,initial-scale=1"><meta data-rh="true" name="twitter:card" content="summary_large_image"><meta data-rh="true" property="og:url" content="https://input-output-hk.github.io/cardano-updates/"><meta data-rh="true" name="docusaurus_locale" content="en"><meta data-rh="true" name="docsearch:language" content="en"><meta data-rh="true" property="og:title" content="Cardano Development Updates | Cardano Development Updates"><meta data-rh="true" name="description" content="Regular updates from Cardano Development Teams"><meta data-rh="true" property="og:description" content="Regular updates from Cardano Development Teams"><meta data-rh="true" name="docusaurus_tag" content="blog_posts_list"><meta data-rh="true" name="docsearch:docusaurus_tag" content="blog_posts_list"><link data-rh="true" rel="icon" href="/cardano-updates/img/favicon.ico"><link data-rh="true" rel="canonical" href="https://input-output-hk.github.io/cardano-updates/"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/" hreflang="en"><link data-rh="true" rel="alternate" href="https://input-output-hk.github.io/cardano-updates/" hreflang="x-default"><script data-rh="true">function maybeInsertBanner(){window.__DOCUSAURUS_INSERT_BASEURL_BANNER&&insertBanner()}function insertBanner(){var n=document.getElementById("docusaurus-base-url-issue-banner-container");if(n){n.innerHTML='\n<div id="docusaurus-base-url-issue-banner" style="border: thick solid red; background-color: rgb(255, 230, 179); margin: 20px; padding: 20px; font-size: 20px;">\n   <p style="font-weight: bold; font-size: 30px;">Your Docusaurus site did not load properly.</p>\n   <p>A very common reason is a wrong site <a href="https://docusaurus.io/docs/docusaurus.config.js/#baseurl" style="font-weight: bold;">baseUrl configuration</a>.</p>\n   <p>Current configured baseUrl = <span style="font-weight: bold; color: red;">/cardano-updates/</span> </p>\n   <p>We suggest trying baseUrl = <span id="docusaurus-base-url-issue-banner-suggestion-container" style="font-weight: bold; color: green;"></span></p>\n</div>\n';var e=document.getElementById("docusaurus-base-url-issue-banner-suggestion-container"),s=window.location.pathname,r="/"===s.substr(-1)?s:s+"/";e.innerHTML=r}}window.__DOCUSAURUS_INSERT_BASEURL_BANNER=!0,document.addEventListener("DOMContentLoaded",maybeInsertBanner)</script><link rel="alternate" type="application/rss+xml" href="/cardano-updates/rss.xml" title="Cardano Updates Feed RSS Feed">
+<link rel="alternate" type="application/atom+xml" href="/cardano-updates/atom.xml" title="Cardano Updates Feed Atom Feed">
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+<link rel="alternate" type="application/rss+xml" href="/cardano-updates/quarterly/rss.xml" title="Cardano Development Updates RSS Feed">
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+<script src="https://plausible.io/js/script.js" defer="defer" data-domain="input-output-hk.github.io/cardano-updates"></script><link rel="stylesheet" href="/cardano-updates/assets/css/styles.1b2b551c.css">
+<link rel="preload" href="/cardano-updates/assets/js/runtime~main.0180faa2.js" as="script">
+<link rel="preload" href="/cardano-updates/assets/js/main.bc51b93f.js" as="script">
+</head>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-06T00:00:00.000Z" itemprop="datePublished">December 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway
+conformance testing working. We are now able to generate random valid data with the help
+of constraint based testing framework, apply that data to Conway Ledger rules and verify
+that the output matches to the one produced by the executable version of the Formal Ledger
+Specification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get
+Constitutional Committee query is complete and tested. Various improvements to the
+testing tools. Addition of more test cases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3888" target="_blank" rel="noopener noreferrer">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3902" target="_blank" rel="noopener noreferrer">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3855" target="_blank" rel="noopener noreferrer">pull-3855</a> - Remove unreachable proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3903" target="_blank" rel="noopener noreferrer">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3878" target="_blank" rel="noopener noreferrer">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3896" target="_blank" rel="noopener noreferrer">pull-3896</a> - Fix Brute force failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3904" target="_blank" rel="noopener noreferrer">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3907" target="_blank" rel="noopener noreferrer">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3883" target="_blank" rel="noopener noreferrer">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3909" target="_blank" rel="noopener noreferrer">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3908" target="_blank" rel="noopener noreferrer">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3912" target="_blank" rel="noopener noreferrer">pull-3912</a> - Removed call to tail, and the <!-- -->&#x27;<!-- -->watchPulser<!-- -->&#x27;<!-- --> test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3852" target="_blank" rel="noopener noreferrer">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3891" target="_blank" rel="noopener noreferrer">pull-3891</a> - Bump plutus to 1.17</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-06T00:00:00.000Z" itemprop="datePublished">December 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator&#x27;s performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1173" target="_blank" rel="noopener noreferrer">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1357" target="_blank" rel="noopener noreferrer">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1385" target="_blank" rel="noopener noreferrer">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href="https://github.com/input-output-hk/mithril/issues/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href="https://github.com/input-output-hk/mithril/issues/1390" target="_blank" rel="noopener noreferrer">#1390</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-04T00:00:00.000Z" itemprop="datePublished">December 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We&#x27;ve measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we&#x27;ve run system integration level benchmarks in the Conway era for the first time, on the same node version.
+Only Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.
+Currently, we&#x27;re looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we&#x27;re interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we&#x27;ve
+improved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The new tracing system is currently receiving usability improvements as we&#x27;re reworking the output of several trace messages.
+Additionally, we&#x27;re setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;ve been working on adapting various benchmarking workloads, which are defined by our workbench&#x27;s profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we&#x27;re implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,
+featuring demonstrations and the preparation of the monthly report. They
+addressed flakiness in tests and enhanced the logs json schema,
+improving overall test reliability. Additionally, the team successfully
+built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform
+support. They further improved the network configuration by detecting
+incompatible persisted states, contributing to overall system
+robustness. Finally, the team released version 0.14.0, highlighting
+their commitment to delivering regular updates and improvements.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Monthly Review
+<a href="https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM" target="_blank" rel="noopener noreferrer">meeting</a>
+packed with demonstrations and prepared monthly report
+<a href="https://github.com/input-output-hk/hydra/pull/1189" target="_blank" rel="noopener noreferrer">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema
+<a href="https://github.com/input-output-hk/hydra/pull/1188" target="_blank" rel="noopener noreferrer">#<!-- -->1188</a><a href="https://github.com/input-output-hk/hydra/issues/1190" target="_blank" rel="noopener noreferrer">#<!-- -->1190</a><a href="https://github.com/input-output-hk/hydra/pull/1192" target="_blank" rel="noopener noreferrer">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI
+<a href="https://github.com/input-output-hk/hydra/pull/1182" target="_blank" rel="noopener noreferrer">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted
+states <a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-29T00:00:00.000Z" itemprop="datePublished">November 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team implemented and tested a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/525" target="_blank" rel="noopener noreferrer">patch</a> that does not propagate future headers.
+It is under review, and we expect it can be released in the next Cardano node version.
+On the UTxO-HD front, we <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/510" target="_blank" rel="noopener noreferrer">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.
+With this prototype finished we can start integrating the rest of the code.
+We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/513" target="_blank" rel="noopener noreferrer">investigated</a> the unexpected performance degradation observed when acquiring the block context.
+We also <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre" target="_blank" rel="noopener noreferrer">released Cardano node 8.7.0</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been
+fully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep&#x27;s expiry is prevented by delaying the expiry for all DReps whenever there are no
+proposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to
+allow for individual Plutus language version updates, rather than requiring a complete
+replacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some
+optimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for
+ledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul
+of functionality for initial funds and staking injection whenever node starts up in
+Conway, while bypassing all previous eras.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3729" target="_blank" rel="noopener noreferrer">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3739" target="_blank" rel="noopener noreferrer">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3743" target="_blank" rel="noopener noreferrer">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3746" target="_blank" rel="noopener noreferrer">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3737" target="_blank" rel="noopener noreferrer">pull-3737</a> - Implement EraTransition</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3749" target="_blank" rel="noopener noreferrer">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3748" target="_blank" rel="noopener noreferrer">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3745" target="_blank" rel="noopener noreferrer">pull-3745</a> - Constitutional Committee Ratification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3763" target="_blank" rel="noopener noreferrer">pull-3763</a> - Plutus interface improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3771" target="_blank" rel="noopener noreferrer">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3766" target="_blank" rel="noopener noreferrer">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3765" target="_blank" rel="noopener noreferrer">pull-3765</a> - Improve native script handling</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3747" target="_blank" rel="noopener noreferrer">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3758" target="_blank" rel="noopener noreferrer">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3754" target="_blank" rel="noopener noreferrer">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="releasing">Releasing<a class="hash-link" href="#releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3742" target="_blank" rel="noopener noreferrer">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3744" target="_blank" rel="noopener noreferrer">pull-3744</a> - Changelog 8.4</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3752" target="_blank" rel="noopener noreferrer">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3753" target="_blank" rel="noopener noreferrer">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3760" target="_blank" rel="noopener noreferrer">pull-3760</a> - Fixup issues for release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3764" target="_blank" rel="noopener noreferrer">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3734" target="_blank" rel="noopener noreferrer">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3735" target="_blank" rel="noopener noreferrer">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3728" target="_blank" rel="noopener noreferrer">pull-3728</a> - STS tests based on constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3714" target="_blank" rel="noopener noreferrer">pull-3714</a> - Implement the remaining upgradable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3733" target="_blank" rel="noopener noreferrer">pull-3733</a> - Add some unit tests for Conway features</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3762" target="_blank" rel="noopener noreferrer">pull-3762</a> - Update CDDL for praos headers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">8.4.0-pre</a>.</li><li>The use of cardano-node <a href="https://hub.docker.com/r/inputoutput/cardano-node" target="_blank" rel="noopener noreferrer">docker hub</a> will be deprecated in preference of <a href="https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node" target="_blank" rel="noopener noreferrer">GHCR</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href="https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href="https://github.com/input-output-hk/cardano-parts/pull/14" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/2" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href="https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href="https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-27-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2337.0" target="_blank" rel="noopener noreferrer"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href="https://mithril.network/doc/adr/6" target="_blank" rel="noopener noreferrer">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1207" target="_blank" rel="noopener noreferrer">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-26-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-26T00:00:00.000Z" itemprop="datePublished">September 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-09-13 - 2023-09-26</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/302" target="_blank" rel="noopener noreferrer">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/298" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/295" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/292" target="_blank" rel="noopener noreferrer">cardano-cli: add governance create-info command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/287" target="_blank" rel="noopener noreferrer">Release 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/286" target="_blank" rel="noopener noreferrer">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/284" target="_blank" rel="noopener noreferrer">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/283" target="_blank" rel="noopener noreferrer">Update cardano-api to 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/282" target="_blank" rel="noopener noreferrer">Remove unused governance-related code</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/281" target="_blank" rel="noopener noreferrer">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/280" target="_blank" rel="noopener noreferrer">Remove redundant conversions in JSON friendly instances </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/279" target="_blank" rel="noopener noreferrer">Regularise era based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/277" target="_blank" rel="noopener noreferrer">Simplify era handling</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/276" target="_blank" rel="noopener noreferrer">Remove <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/275" target="_blank" rel="noopener noreferrer">Era-based <code>stake-pool</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/274" target="_blank" rel="noopener noreferrer">Fix git revision in <code>version</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/273" target="_blank" rel="noopener noreferrer">cardano-cli-8.8.0.0</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/265" target="_blank" rel="noopener noreferrer">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/264" target="_blank" rel="noopener noreferrer">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/262" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/256" target="_blank" rel="noopener noreferrer">Delete unused eon constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/255" target="_blank" rel="noopener noreferrer">Export ByronEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/254" target="_blank" rel="noopener noreferrer">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/250" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/249" target="_blank" rel="noopener noreferrer">Add JSON instance for Hash GenesisKey </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/248" target="_blank" rel="noopener noreferrer">Support more ledger constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/247" target="_blank" rel="noopener noreferrer">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/246" target="_blank" rel="noopener noreferrer">Release 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/245" target="_blank" rel="noopener noreferrer">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/244" target="_blank" rel="noopener noreferrer">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/243" target="_blank" rel="noopener noreferrer">Fix typos in some deserialization error messages</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/240" target="_blank" rel="noopener noreferrer">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5480" target="_blank" rel="noopener noreferrer">Trace Configuration Trace Message Enhancement</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5466" target="_blank" rel="noopener noreferrer">cardano-node: reduce orphan instances</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5471" target="_blank" rel="noopener noreferrer">Update to cardano-cli 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-22-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in
+collaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability
+and identified concrete steps to enhance network resiliency in feature
+items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a>, and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a>.
+Additionally, they contributed the aiken-mode editor integration to the
+aiken-lang organization, updated dependencies to utilize cardano-api
+8.20, and published the Hydra security advisory CVE-2023-42806 with a
+workaround available for users.</p><p>These efforts demonstrate the team\&#x27;s commitment to project improvement,
+security, and open-source community collaboration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command
+<a href="https://github.com/input-output-hk/hydra/pull/1077" target="_blank" rel="noopener noreferrer">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested
+feature items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a></li><li>Moved <a href="https://github.com/aiken-lang/aiken-mode" target="_blank" rel="noopener noreferrer">aiken-mode</a> (created by SN)
+to aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20
+<a href="https://github.com/input-output-hk/hydra/pull/1075" target="_blank" rel="noopener noreferrer">#1075</a></li><li>Published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(workaround available)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish &quot;network resilience to disconnects&quot;
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Finish kupo integration with hydra
+<a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/9"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/11"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-22-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We&#x27;ve been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We&#x27;re currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we&#x27;ve been equipping both that and the existing benchmarking
+backend with means to measure and document network latency for each run. Furthermore we&#x27;ve implemented means to
+capture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences
+in the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we&#x27;re running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We&#x27;ve concluded that baseline profile runs aren&#x27;t directly comparable between the two, so we decided
+to compare standard deviations instead to validate the measurements from nomad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline
+have been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we&#x27;ve looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document
+which runtime configuration the node arrived eventually. We&#x27;re working on providing a machine-readable JSON/YAML
+trace message for that purpose.  </p><p>This will facilitate hot-reloading a node&#x27;s tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it
+produces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an
+impact on our measurements, as we&#x27;d be basically using two different instruments to take them.  </p><p>Along the way we&#x27;ve already been successful in eliminating some possible confounders that had been introduced by the nomad service
+or the slightly different system architecture of the new cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-team-member">New team member<a class="hash-link" href="#new-team-member" title="Direct link to heading">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he&#x27;s an excellent fit for our existing team.
+So I&#x27;m very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-20-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.
+We are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.
+On the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.
+We also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/349" target="_blank" rel="noopener noreferrer">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node&#x27;s baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.
+We are now drafting the final self-contained argument. (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4157" target="_blank" rel="noopener noreferrer">4157</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/339" target="_blank" rel="noopener noreferrer">339</a>).
+A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/340" target="_blank" rel="noopener noreferrer">340</a>, <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/354" target="_blank" rel="noopener noreferrer">354</a>, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/355" target="_blank" rel="noopener noreferrer">355</a>)
+However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/345" target="_blank" rel="noopener noreferrer">345</a> and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/346" target="_blank" rel="noopener noreferrer">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-20-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href="https://github.com/input-output-hk/mithril/issues/1200" target="_blank" rel="noopener noreferrer">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1238" target="_blank" rel="noopener noreferrer">#1238</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in
+Nantes, France. They used this oportunity to meet fellow mithril team and spend
+some time together to hack on some code and, as always, reflect on the past work
+and find optimal path forward for both projects. They also fixed a bug that
+caused hydra-node to crash when querying L1, worked on a new network resillience
+proof-of-concept and accepted a new ADR related to stateless transaction
+observation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href="https://github.com/input-output-hk/hydra/pull/1048" target="_blank" rel="noopener noreferrer">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href="https://github.com/input-output-hk/hydra/pull/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Collected experimental CI findings <a href="https://github.com/input-output-hk/hydra/pull/1070" target="_blank" rel="noopener noreferrer">#1070</a></li><li>Propose first POC for the network resilience <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete hydra-support in kupo <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">kupo#117</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/10"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/12"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team&#x27;s focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial
+version of Constitution. Priority in which Governance Action are now enacted matches the
+specification. DRep&#x27;s deposits are now properly accounted for. Governance actions that are
+not allowed to be voted on by Stake Pool operators and Constitutional Committee members
+are prevented by transaction submission failure, rather than simply being ignored. There
+was a few important CDDL fixes as well as a lot of new round trip serialization
+tests. Constraint based testing framework has also received a lot of improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3681" target="_blank" rel="noopener noreferrer">pull-3681</a> - Conway Genesis additions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3690" target="_blank" rel="noopener noreferrer">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3705" target="_blank" rel="noopener noreferrer">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3700" target="_blank" rel="noopener noreferrer">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3704" target="_blank" rel="noopener noreferrer">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3698" target="_blank" rel="noopener noreferrer">pull-3698</a> - Reordering of governance actions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3712" target="_blank" rel="noopener noreferrer">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3716" target="_blank" rel="noopener noreferrer">pull-3716</a> - Abstract threshold calculation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3725" target="_blank" rel="noopener noreferrer">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3718" target="_blank" rel="noopener noreferrer">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3721" target="_blank" rel="noopener noreferrer">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3629" target="_blank" rel="noopener noreferrer">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3680" target="_blank" rel="noopener noreferrer">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3708" target="_blank" rel="noopener noreferrer">pull-3708</a> - Post release changes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3730" target="_blank" rel="noopener noreferrer">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3697" target="_blank" rel="noopener noreferrer">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3709" target="_blank" rel="noopener noreferrer">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3726" target="_blank" rel="noopener noreferrer">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3713" target="_blank" rel="noopener noreferrer">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-44">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22" target="_blank" rel="noopener noreferrer">sprint 44</a><a class="hash-link" href="#high-level-overview-of-sprint-44" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we
+identified a possible improvement to bootstrap peers. A more detailed
+description is available <a href="https://github.com/input-output-hk/ouroboros-network/issues/4675" target="_blank" rel="noopener noreferrer">here</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-840-release">Cardano-Node-8.4.0 Release<a class="hash-link" href="#cardano-node-840-release" title="Direct link to heading">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final
+integration <a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">PR</a> is currently being merged. We published
+new versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with
+<code>cardano-node</code>.  This is towards our goal which we planned for the next
+quarter.  The identified tasks are to fix breaking tests, and then measure and
+address possible performance regressions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4663" target="_blank" rel="noopener noreferrer">ouroboros-network-#4663</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4664" target="_blank" rel="noopener noreferrer">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4660" target="_blank" rel="noopener noreferrer">ouroboros-network-#4660</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning
+the number of SPOs or stakes, although the number of overall P2P relays has
+increased.  Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>) is investigating
+this issue.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png" width="2014" height="1586" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png" width="2016" height="1576" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a> and their mainnet
+monitoring infrastructure.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href="https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108" target="_blank" rel="noopener noreferrer">here</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href="https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href="https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710" target="_blank" rel="noopener noreferrer">cardano-ops-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href="https://github.com/input-output-hk/cardano-parts/pull/10" target="_blank" rel="noopener noreferrer">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href="https://github.com/input-output-hk/cardano-parts/pull/11" target="_blank" rel="noopener noreferrer">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href="https://github.com/input-output-hk/cardano-parts/pull/12" target="_blank" rel="noopener noreferrer">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href="https://github.com/input-output-hk/cardano-parts/pull/13" target="_blank" rel="noopener noreferrer">cardano-parts-pull-13</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href="https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/1" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href="https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href="https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-14T00:00:00.000Z" itemprop="datePublished">September 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also
+the team has ran a number of benchmarks and tests for the new options/flavours of DBSync
+and prepared a blogpost which summorises them, for downstream components.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1498" target="_blank" rel="noopener noreferrer">#1498</a></li><li>Simplifications of new feautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1496" target="_blank" rel="noopener noreferrer">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds
+tests for them
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>CI fixes
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1494" target="_blank" rel="noopener noreferrer">#1494</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1491" target="_blank" rel="noopener noreferrer">#1491</a></li><li>Prepared a blogpost about different DBSync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf" target="_blank" rel="noopener noreferrer">blog</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-12-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-12T00:00:00.000Z" itemprop="datePublished">September 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-30 - 2023-09-12</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Release of <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.
+This release completes <a href="https://sancho.network/get-started#sanchonet-feature-rollout" target="_blank" rel="noopener noreferrer">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming
+<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top
+of that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.
+Removing <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/261" target="_blank" rel="noopener noreferrer">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/257" target="_blank" rel="noopener noreferrer">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/260" target="_blank" rel="noopener noreferrer">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/256" target="_blank" rel="noopener noreferrer">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/254" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/250" target="_blank" rel="noopener noreferrer">#221 Update description fields on delegation certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/249" target="_blank" rel="noopener noreferrer">Update error message for eras mismatch between node and cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/248" target="_blank" rel="noopener noreferrer">Era based <code>address</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/246" target="_blank" rel="noopener noreferrer">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/245" target="_blank" rel="noopener noreferrer">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/244" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/243" target="_blank" rel="noopener noreferrer">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/242" target="_blank" rel="noopener noreferrer">Move <code>node</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/241" target="_blank" rel="noopener noreferrer">Era-based <code>stake-address</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/240" target="_blank" rel="noopener noreferrer">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/239" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from errors</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/238" target="_blank" rel="noopener noreferrer">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/237" target="_blank" rel="noopener noreferrer">Move <code>key</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/236" target="_blank" rel="noopener noreferrer">Move <code>query</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/235" target="_blank" rel="noopener noreferrer">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/234" target="_blank" rel="noopener noreferrer">Move <code>pool</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/233" target="_blank" rel="noopener noreferrer">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/232" target="_blank" rel="noopener noreferrer">Move <code>address</code> run command implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/231" target="_blank" rel="noopener noreferrer">Delete legacy <code>conway governance</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/230" target="_blank" rel="noopener noreferrer">Era sensitive transaction run commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/229" target="_blank" rel="noopener noreferrer">Move transaction command code into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/228" target="_blank" rel="noopener noreferrer">Fix query <code>key-period-info</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/227" target="_blank" rel="noopener noreferrer">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/225" target="_blank" rel="noopener noreferrer">Prefix complex delegation certificate option</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/233" target="_blank" rel="noopener noreferrer">Fix test constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/231" target="_blank" rel="noopener noreferrer">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/230" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/228" target="_blank" rel="noopener noreferrer">Release 8.19.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/226" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/225" target="_blank" rel="noopener noreferrer">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/224" target="_blank" rel="noopener noreferrer">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/222" target="_blank" rel="noopener noreferrer">Release 8.18.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/221" target="_blank" rel="noopener noreferrer">Fix exception when executing drep queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5460" target="_blank" rel="noopener noreferrer">Fix deadlock issue with stdout tracer in tx-generator</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5453" target="_blank" rel="noopener noreferrer">nix: workbench tracing configuration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-08-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-08T00:00:00.000Z" itemprop="datePublished">September 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline
+datums. They simplified the chain layer by refactoring how the chain state is
+persisted. Updates to the Hydra tutorial were completed, including CI workflows
+to keep it up-to-date. The team engaged in discussions with researchers about
+incremental commits &amp; decommits, and drafted an architectural decision record
+for a resource-based API. They also explored simpler solutions for the upcoming
+network resilience feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Support InlineScriptDatum in commit
+<a href="https://github.com/input-output-hk/hydra/issues/1043" target="_blank" rel="noopener noreferrer">#1043</a></li><li>Refactored chain state persistency
+<a href="https://github.com/input-output-hk/hydra/pull/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)
+<a href="https://github.com/input-output-hk/hydra/issues/997" target="_blank" rel="noopener noreferrer">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \&quot;Network
+resilience problem\&quot; to find a KISS solution for
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Drafted and discussed incremental de-/commit features within team
+and with researchers
+<a href="https://github.com/input-output-hk/hydra/issues/199" target="_blank" rel="noopener noreferrer">#199</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Created ADR for a resource based overhaul of the API
+<a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already
+understood)</li><li>An ADR for improving tx construction &amp; observation to not need chain
+state</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-07-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2335.0" target="_blank" rel="noopener noreferrer"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href="https://github.com/input-output-hk/mithril/issues/1155" target="_blank" rel="noopener noreferrer">#1155</a></li><li>Completed the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/948" target="_blank" rel="noopener noreferrer">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href="https://github.com/input-output-hk/mithril/issues/947" target="_blank" rel="noopener noreferrer">#947</a></li><li>Completed the issue <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href="https://github.com/input-output-hk/mithril/issues/1160" target="_blank" rel="noopener noreferrer">#1160</a></li><li>Completed the issue <code>Update &#x27;ed25519-dalek&#x27; to &#x27;2.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1188" target="_blank" rel="noopener noreferrer">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href="https://github.com/input-output-hk/mithril/issues/1151" target="_blank" rel="noopener noreferrer">#1151</a></li><li>Completed the issue <code>Fix end to end &#x27;wait_for_the_expected_time&#x27; test</code> <a href="https://github.com/input-output-hk/mithril/issues/1191" target="_blank" rel="noopener noreferrer">#1191</a></li><li>Completed the issue <code>Fix docs &#x27;git checkout&#x27; command</code> <a href="https://github.com/input-output-hk/mithril/issues/1174" target="_blank" rel="noopener noreferrer">#1174</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-07-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We&#x27;re productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node&#x27;s traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation
+operation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point
+in time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.
+This feature enables feedback on when tracer implementation details in some component might have changed. It&#x27;s also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we&#x27;ve created a fine-grained configuration of the new system that caters to benchmarking&#x27;s need of very many
+detailed trace messages. It&#x27;s aimed at mirroring the same amount of trace messages, and information, we&#x27;re seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we&#x27;re using it in production mode to comparatively benchmark both tracing systems after merging past month&#x27;s optimizations - which is the
+first real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-06-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-06T00:00:00.000Z" itemprop="datePublished">September 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.
+On the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.
+The Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203" target="_blank" rel="noopener noreferrer">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418" target="_blank" rel="noopener noreferrer">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3099" target="_blank" rel="noopener noreferrer">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/323" target="_blank" rel="noopener noreferrer">#323</a>).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3491" target="_blank" rel="noopener noreferrer">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/91" target="_blank" rel="noopener noreferrer">#91</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the
+formal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/12"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/14"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network
+layer and have the first draft document related to needed design. They also
+improved the user experience by allowing a commit using inline datums.
+Discussed the off-chain governance with researchers and improved internal model
+tests. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a clear understanding of the changes we need for the &quot;Improve network resiliency&quot; feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3659" target="_blank" rel="noopener noreferrer">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3637" target="_blank" rel="noopener noreferrer">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3651" target="_blank" rel="noopener noreferrer">pull-3651</a> - Inactive DReps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3664" target="_blank" rel="noopener noreferrer">pull-3664</a> - Track proposal expiry</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3668" target="_blank" rel="noopener noreferrer">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3669" target="_blank" rel="noopener noreferrer">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3676" target="_blank" rel="noopener noreferrer">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3635" target="_blank" rel="noopener noreferrer">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3670" target="_blank" rel="noopener noreferrer">pull-3670</a> - Validate previously enacted govAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3694" target="_blank" rel="noopener noreferrer">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3674" target="_blank" rel="noopener noreferrer">pull-3674</a> - Added RATIFY thresholds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3684" target="_blank" rel="noopener noreferrer">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3688" target="_blank" rel="noopener noreferrer">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3677" target="_blank" rel="noopener noreferrer">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3686" target="_blank" rel="noopener noreferrer">pull-3686</a> - Post patch release fixup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3695" target="_blank" rel="noopener noreferrer">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3683" target="_blank" rel="noopener noreferrer">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3662" target="_blank" rel="noopener noreferrer">pull-3662</a> - Equality on raw types</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-43">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22" target="_blank" rel="noopener noreferrer">sprint 43</a><a class="hash-link" href="#high-level-overview-of-sprint-43" title="Direct link to heading">​</a></h2><p>In this sprint, we received contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> &amp; <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>.  Karl Knutsson
+(<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts
+and our <code>WireShark</code> dissector.  While the <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> developers focused on
+addressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to
+be run natively on all platforms (these tests mostly contain tests that
+require <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We
+run <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,
+<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.
+The <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on
+GitHub Actions runners. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4653" target="_blank" rel="noopener noreferrer">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>
+version.  So far he integrated <code>cardano-ledger-conway-1.8</code> and
+<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and
+<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,
+<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released
+to <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered
+by Karl from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>). More details are included below.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-p2p-addoption">Progress on P2P addoption<a class="hash-link" href="#progress-on-p2p-addoption" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="spo-relays">SPO relays<a class="hash-link" href="#spo-relays" title="Direct link to heading">​</a></h4><p>There are currently ~2000 relays running P2P
+enabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On
+16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil
+Ada.</p><p><img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png" width="2034" height="1588" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png" width="2038" height="1594" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> and their mainnet monitoring
+infrastructure.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iog-relays">IOG relays<a class="hash-link" href="#iog-relays" title="Direct link to heading">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all
+IOG relays will be running P2P.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>In this sprint, we got a few contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>
+miniprotocols.  These timeouts help a node remove idle connections from the
+responder (server) side <a href="https://github.com/input-output-hk/ouroboros-network/pull/4648" target="_blank" rel="noopener noreferrer">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>.</li></ul><p><a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been working on refactoring the main entry function of P2P <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4652" target="_blank" rel="noopener noreferrer">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It&#x27;s supposed to relay the
+remote value, but instead, it returns the local value. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4642" target="_blank" rel="noopener noreferrer">ouroboros-network-#4642</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="async-demotion-test-fix">Async Demotion Test Fix<a class="hash-link" href="#async-demotion-test-fix" title="Direct link to heading">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of
+the test itself rather than a bug in the connection manager. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4655" target="_blank" rel="noopener noreferrer">ouroboros-network-#4655</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a> repository started -- &quot;Content Addressed Packages&quot;<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don&#x27;t have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Content addressed packages -- new repo: <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Flake devShell module improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/4" target="_blank" rel="noopener noreferrer">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/5" target="_blank" rel="noopener noreferrer">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/6" target="_blank" rel="noopener noreferrer">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href="https://github.com/input-output-hk/cardano-parts/pull/7" target="_blank" rel="noopener noreferrer">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href="https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module" target="_blank" rel="noopener noreferrer">cardano-parts-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href="https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href="https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Sanchonet demonstration repository: <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-29-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-29T00:00:00.000Z" itemprop="datePublished">August 29, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-16 - 2023-08-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger&#x27;s PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">- GetGovState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepStakeDistr</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetCommitteeState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetConstitution</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/179" target="_blank" rel="noopener noreferrer">Add goverance info action creation to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/176" target="_blank" rel="noopener noreferrer">Add create-no-confidence command to era based cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/175" target="_blank" rel="noopener noreferrer">Add create-new-committee command to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/204" target="_blank" rel="noopener noreferrer">Enable <code>--drep-script-hash</code> option</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/211" target="_blank" rel="noopener noreferrer">Remove <code>experimental</code> subcommand</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/210" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/194" target="_blank" rel="noopener noreferrer">New <code>governance drep id</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/189" target="_blank" rel="noopener noreferrer">Add <code>governance query</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/187" target="_blank" rel="noopener noreferrer">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/203" target="_blank" rel="noopener noreferrer">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/201" target="_blank" rel="noopener noreferrer">Release 8.6.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/195" target="_blank" rel="noopener noreferrer">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/193" target="_blank" rel="noopener noreferrer">Add test for conway governance action create-constitution</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/192" target="_blank" rel="noopener noreferrer">Move legacy errors out of legacy command structure modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/191" target="_blank" rel="noopener noreferrer">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/188" target="_blank" rel="noopener noreferrer">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/186" target="_blank" rel="noopener noreferrer">Move some error types</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/185" target="_blank" rel="noopener noreferrer">Delete unused module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/183" target="_blank" rel="noopener noreferrer">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/182" target="_blank" rel="noopener noreferrer">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/180" target="_blank" rel="noopener noreferrer">Remove example era-based parsers we don&#x27;t need anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/174" target="_blank" rel="noopener noreferrer">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/216" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/214" target="_blank" rel="noopener noreferrer">Replace ProtocolParameters usage with ledger&#x27;s PParams</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/210" target="_blank" rel="noopener noreferrer">Use injective type families to improve type inference</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/209" target="_blank" rel="noopener noreferrer">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/208" target="_blank" rel="noopener noreferrer">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/207" target="_blank" rel="noopener noreferrer">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/206" target="_blank" rel="noopener noreferrer">Expose ledger lenses for governance types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/205" target="_blank" rel="noopener noreferrer">New version cardano-api-8.16.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/204" target="_blank" rel="noopener noreferrer">Add <code>VotingProcedures</code> type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/202" target="_blank" rel="noopener noreferrer">Release 8.16.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/200" target="_blank" rel="noopener noreferrer">Update createAnchor to use hashAnchorData</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/197" target="_blank" rel="noopener noreferrer">Release 8.15.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/196" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-28-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-28T00:00:00.000Z" itemprop="datePublished">August 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1106" target="_blank" rel="noopener noreferrer">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href="https://github.com/input-output-hk/mithril/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Completed the issue <code>Use the &#x27;/signers/registered&#x27; route to verify if a signer is registered</code> <a href="https://github.com/input-output-hk/mithril/issues/1152" target="_blank" rel="noopener noreferrer">#1152</a></li><li>Worked on the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Worked on the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-25-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-25T00:00:00.000Z" itemprop="datePublished">August 25, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which
+continously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at
+RareEvo workshop as an educational initiative for the community.
+Additionally, the team updated the Hydra demo and tutorial to include Mithril
+and latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve
+<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a
+bad user experience.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>New ADR for “Resourced based API” <a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a poc on network resilience working <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/931" target="_blank" rel="noopener noreferrer">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a>: &quot;Close transaction dropped from cardano-node&quot;</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-24-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-24T00:00:00.000Z" itemprop="datePublished">August 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we&#x27;re developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We&#x27;re performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we&#x27;re working on respective integrations on both those paths.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held
+in memory, which wouldn&#x27;t fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell&#x27;s native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We&#x27;re splitting out everything that&#x27;s verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We&#x27;re able to perform full runs on the new hardware cluster
+and porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-23-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-23T00:00:00.000Z" itemprop="datePublished">August 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.
+On the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/314" target="_blank" rel="noopener noreferrer">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/305" target="_blank" rel="noopener noreferrer">#305</a>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href="https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href="https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/275" target="_blank" rel="noopener noreferrer">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/284" target="_blank" rel="noopener noreferrer">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/283" target="_blank" rel="noopener noreferrer">#283</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/301" target="_blank" rel="noopener noreferrer">#301</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/304" target="_blank" rel="noopener noreferrer">#304</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/308" target="_blank" rel="noopener noreferrer">#308</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of
+programs to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)
+mini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part
+of 4th year masters course on distributed systemsby colleagues at UC
+Louvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part
+of a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and
+wrote property tests for its algebraic laws</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/14"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/16"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that
+brings support for cardano-node 8.1.2, along with performance enhancements and
+various API improvements. Additionally, the team successfully onboarded a new
+contributor who is now actively participating in operating a Hydra Head. They
+took part in a meeting of the Intersect open source committee and prepared the
+Hydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href="https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true" target="_blank" rel="noopener noreferrer">using this
+form</a>.
+We hope to make it possible to follow along on-line as well and will announce
+details on the Hydra announcements channel on the <a href="https://discord.gg/Qq5vNTg9PT" target="_blank" rel="noopener noreferrer">IOG discord
+server</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance
+and several API improvements. <a href="https://github.com/input-output-hk/hydra/releases/tag/0.12.0" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting
+for DRep and Stake Pool Operators is now at the state that can be used by downstream
+components. Addition of new ledger state queries makes it possible to verify changes to
+the governance state, such as placement of votes, submission of governance proposals,
+inspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the
+ability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3577" target="_blank" rel="noopener noreferrer">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3609" target="_blank" rel="noopener noreferrer">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3604" target="_blank" rel="noopener noreferrer">pull-3604</a> - README: update CIP-1694 link</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3616" target="_blank" rel="noopener noreferrer">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3599" target="_blank" rel="noopener noreferrer">pull-3599</a> - Add governance action well-formedness check</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3607" target="_blank" rel="noopener noreferrer">pull-3607</a> - Rename governance to gov</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3601" target="_blank" rel="noopener noreferrer">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3615" target="_blank" rel="noopener noreferrer">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3596" target="_blank" rel="noopener noreferrer">pull-3596</a> - Upgradeable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3625" target="_blank" rel="noopener noreferrer">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3592" target="_blank" rel="noopener noreferrer">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a> - Treasury donations</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3633" target="_blank" rel="noopener noreferrer">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3634" target="_blank" rel="noopener noreferrer">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3630" target="_blank" rel="noopener noreferrer">pull-3630</a> - Implemented DRep refreshing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3640" target="_blank" rel="noopener noreferrer">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3636" target="_blank" rel="noopener noreferrer">pull-3636</a> - Implement DRep ratification with an &quot;always passing&quot;; threshold</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3648" target="_blank" rel="noopener noreferrer">pull-3648</a> - Governance queries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3650" target="_blank" rel="noopener noreferrer">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3658" target="_blank" rel="noopener noreferrer">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3628" target="_blank" rel="noopener noreferrer">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3619" target="_blank" rel="noopener noreferrer">pull-3619</a> - Disabled a broken test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3660" target="_blank" rel="noopener noreferrer">pull-3660</a> - Fix bounds and versions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3661" target="_blank" rel="noopener noreferrer">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-42">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22" target="_blank" rel="noopener noreferrer">sprint 42</a><a class="hash-link" href="#high-level-overview-of-sprint-42" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version
+<code>0.9.0.0</code>) which includes <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">big ledger peers feature</a>.
+This is the primary peer selection mechanism to defend against eclipses.   We
+also prepared a PR to updated <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/165" target="_blank" rel="noopener noreferrer"><code>ouroboros-cosnensus</code></a>
+and <a href="https://github.com/input-output-hk/ekg-forward/pull/30" target="_blank" rel="noopener noreferrer"><code>ekg-forward</code></a> packages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cddl-specs-for-protocol-codecs">CDDL specs for protocol codecs<a class="hash-link" href="#cddl-specs-for-protocol-codecs" title="Direct link to heading">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation
+which is highly polymorphic.  <code>cddl</code> doesn&#x27;t have the notion of polymorphism,
+but has <code>any</code> which can generate any valid cbor term.  We matched it with an
+<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.
+This simplified the specifications and made it easier to understand which parts
+are defined in the spec, and which parts are left unspecified.  See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4595" target="_blank" rel="noopener noreferrer">ouroboros-network#4595</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network-framework-api-changes">Ouroboros-Network-Framework API changes<a class="hash-link" href="#ouroboros-network-framework-api-changes" title="Direct link to heading">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.
+The <code>ouroboros-network-framework</code> package contains a redesign of API exposed to
+<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to
+extend in the future if there will be new arguments that need to be passed to
+mini-protocol initiator and responders which comes from the low-level network
+layer.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nix-setup-ci">Nix setup (CI)<a class="hash-link" href="#nix-setup-ci" title="Direct link to heading">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team
+we ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,
+<code>hls</code>, <code>cddl</code>, and more.  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4640" target="_blank" rel="noopener noreferrer">ouroboros-network#4640</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4643" target="_blank" rel="noopener noreferrer">ouroboros-network#4643</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first
+contract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted
+code &amp; design review.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois-review">Galois Review<a class="hash-link" href="#galois-review" title="Direct link to heading">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3835" target="_blank" rel="noopener noreferrer">ouroboros-network#3835</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci">CI<a class="hash-link" href="#ci" title="Direct link to heading">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be
+executed with extra concurrency <a href="https://github.com/input-output-hk/ouroboros-network/pull/4637" target="_blank" rel="noopener noreferrer">ouroboros-network#4637</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4649" target="_blank" rel="noopener noreferrer">ouroboros-network#4649</a>.</p><p>We also added GitHub&#x27;s dependabot <a href="https://github.com/input-output-hk/ouroboros-network/pull/4650" target="_blank" rel="noopener noreferrer">ouroboros-network#4650</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We settled on implementation design of bootstrap peers which is being
+implemented, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href="https://flake.parts" target="_blank" rel="noopener noreferrer">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href="https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href="https://github.com/input-output-hk/cardano-world/pull/109" target="_blank" rel="noopener noreferrer">cardano-world-pull-109</a></li><li>Update p2p configs: <a href="https://github.com/input-output-hk/cardano-world/pull/110" target="_blank" rel="noopener noreferrer">cardano-world-pull-110</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inputs-check">Inputs-check<a class="hash-link" href="#inputs-check" title="Direct link to heading">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href="https://github.com/input-output-hk/inputs-check" target="_blank" rel="noopener noreferrer">inputs-check</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Full Node Verifier merged <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href="https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta" target="_blank" rel="noopener noreferrer">this</a> fork.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href="https://github.com/input-output-hk/kes-agent/issues/19" target="_blank" rel="noopener noreferrer">#19</a></li><li>Receipt confirmation message <a href="https://github.com/input-output-hk/kes-agent/issues/20" target="_blank" rel="noopener noreferrer">#20</a></li><li>KES agent binary ready <a href="https://github.com/input-output-hk/kes-agent/issues/21" target="_blank" rel="noopener noreferrer">#21</a></li><li>Control client implemented <a href="https://github.com/input-output-hk/kes-agent/issues/11" target="_blank" rel="noopener noreferrer">#11</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/15"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/17"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.
+We also continued testing and improving the new db-sync options.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Conway integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Support for Sanchonet
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1476" target="_blank" rel="noopener noreferrer">#1476</a></li><li>Stake distribution is computed earlier
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Testing new db-sync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>Added support for ghc-9.6
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1479" target="_blank" rel="noopener noreferrer">#1479</a></li><li>Tech debt: improve exceptions
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1471" target="_blank" rel="noopener noreferrer">#1471</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-secp-issue">SECP bindings Security Issue Report</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="security-issue-report-secp256k1-bug">Security Issue Report: SECP256k1 bug<a class="hash-link" href="#security-issue-report-secp256k1-bug" title="Direct link to heading">​</a></h2><p>Date Occurred: July 15, 2022
+Severity:  Potentially Very High if exploited on Mainnet
+Authors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-issue">Summary of Issue<a class="hash-link" href="#summary-of-issue" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="criticality-level">Criticality Level<a class="hash-link" href="#criticality-level" title="Direct link to heading">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet
+Context</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.
+How was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="what-action-was-taken">What Action was Taken<a class="hash-link" href="#what-action-was-taken" title="Direct link to heading">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).
+Fixes were applied to prevent the use of the primitives.
+A full security audit was carried out on the bindings.
+The rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="potential-effect">Potential Effect<a class="hash-link" href="#potential-effect" title="Direct link to heading">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="actual-effect">Actual Effect<a class="hash-link" href="#actual-effect" title="Direct link to heading">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ongoing-mitigations-needed-if-any">Ongoing Mitigations Needed, if any<a class="hash-link" href="#ongoing-mitigations-needed-if-any" title="Direct link to heading">​</a></h4><p>None</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="responsibility-for-mitigations">Responsibility for Mitigations<a class="hash-link" href="#responsibility-for-mitigations" title="Direct link to heading">​</a></h4><p>Core team</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description-of-incident">Detailed description of Incident<a class="hash-link" href="#detailed-description-of-incident" title="Direct link to heading">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin&#x27;s library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518" target="_blank" rel="noopener noreferrer">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61" target="_blank" rel="noopener noreferrer">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170" target="_blank" rel="noopener noreferrer">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10" target="_blank" rel="noopener noreferrer">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/289" target="_blank" rel="noopener noreferrer">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="recommendations">Recommendations<a class="hash-link" href="#recommendations" title="Direct link to heading">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are &quot;safe&quot;. Treat all external calls circumspectly.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-15-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-15T00:00:00.000Z" itemprop="datePublished">August 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-02 - 2023-08-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/169" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/164" target="_blank" rel="noopener noreferrer">Reenable golden tests</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/163" target="_blank" rel="noopener noreferrer">#128 DRep key generation</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/160" target="_blank" rel="noopener noreferrer">Bump index states</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/159" target="_blank" rel="noopener noreferrer">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/158" target="_blank" rel="noopener noreferrer">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/151" target="_blank" rel="noopener noreferrer">Plural for command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/144" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/142" target="_blank" rel="noopener noreferrer">Wire up constitution creation in the new era based cli commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/140" target="_blank" rel="noopener noreferrer">cardano-cli 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/137" target="_blank" rel="noopener noreferrer">Wire up remaining DReps</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/136" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/189" target="_blank" rel="noopener noreferrer">Release cardano-api 8.13.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/187" target="_blank" rel="noopener noreferrer">Fix build</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/185" target="_blank" rel="noopener noreferrer">cardano-api 8.13.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/181" target="_blank" rel="noopener noreferrer">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/180" target="_blank" rel="noopener noreferrer">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/173" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/171" target="_blank" rel="noopener noreferrer">Simplify code with new constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/170" target="_blank" rel="noopener noreferrer">Fix <code>EraCast Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/168" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/167" target="_blank" rel="noopener noreferrer">Fix committee hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/164" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/163" target="_blank" rel="noopener noreferrer">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5430" target="_blank" rel="noopener noreferrer">cardano-git-rev: New version for CHaP</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-11-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version
+8.1.2, ensuring compatibility with the latest mainnet release. The team also
+participated in discussions about a &quot;cardanonical&quot; JSON schema and added it as a
+submodule to the project, contributing to improved data modeling and
+interoperability.</p><p>In terms of community engagement, the team successfully onboarded a new
+contributor, also participated in a RareEvo Twitter space, and continued
+preparations for the Hydra master-class.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href="https://github.com/input-output-hk/hydra/issues/1007" target="_blank" rel="noopener noreferrer">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and
+add it as submodule to the project
+<a href="https://github.com/input-output-hk/hydra/pull/1013" target="_blank" rel="noopener noreferrer">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Release 0.12.0</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-11-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we&#x27;re currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of our release benchmarking cycle, we&#x27;ve completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,
+we&#x27;re working on having a trace message self-document the final tracing configuration of a running node. Apart from adding
+insight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we&#x27;re setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent
+and reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were
+able to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/16"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/18"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-10-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-10T00:00:00.000Z" itemprop="datePublished">August 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the <strong>Mithril protocol’s mainnet beta</strong> launch: the <code>release-mainnet</code> network is now consistently producing new certificates and snapshots! The team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a></li><li>Completed the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href="https://github.com/input-output-hk/mithril/issues/1085" target="_blank" rel="noopener noreferrer">#1085</a></li><li>Completed the issue <code>Ingest &#x27;mainnet&#x27; metrics/logs in Grafana</code> <a href="https://github.com/input-output-hk/mithril/issues/1122" target="_blank" rel="noopener noreferrer">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a &#x27;clean&#x27; file to extracted database in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1131" target="_blank" rel="noopener noreferrer">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href="https://github.com/input-output-hk/mithril/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Completed the issue <code>The &#x27;release-preprod&#x27; network stopped producing certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Completed the issue <code>The &#x27;release-mainnet&#x27; network does not show up in the explorer</code> <a href="https://github.com/input-output-hk/mithril/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.2&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1090" target="_blank" rel="noopener noreferrer">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can&#x27;t sign with &#x27;Invalid signature for party&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/1125" target="_blank" rel="noopener noreferrer">#1125</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-09-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-09T00:00:00.000Z" itemprop="datePublished">August 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/256" target="_blank" rel="noopener noreferrer">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/261" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href="https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd" target="_blank" rel="noopener noreferrer">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> and <a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn&#x27;t happened yet.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Work on a mithril flaky test <a href="https://github.com/input-output-hk/mithril/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Keep working on Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Should be merged in the coming week.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Finalised the fuzz tests <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">#43</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is formalising mini protocols and also further developing the
+performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Developing new framework for specification and verification of
+mini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that
+allows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the
+project. The team updated the use case section for auctions on the <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a>
+branch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced
+persistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves
+off-chain transaction processing performance. They also added a
+<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community
+reviews for several catalyst proposals related to Hydra and Mithril,
+contributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a> branch)</li><li>Completed event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href="https://github.com/input-output-hk/hydra/pull/1006" target="_blank" rel="noopener noreferrer">#1006</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/17"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/19"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In
+particular, the main focus was directed towards solidifying transaction related types and
+their binary representation. We also directed some effort into unblocking Plutus team with
+respect to PlutusV3 integration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3581" target="_blank" rel="noopener noreferrer">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3571" target="_blank" rel="noopener noreferrer">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a> - Add Script to Constitution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3576" target="_blank" rel="noopener noreferrer">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3579" target="_blank" rel="noopener noreferrer">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3585" target="_blank" rel="noopener noreferrer">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3587" target="_blank" rel="noopener noreferrer">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3586" target="_blank" rel="noopener noreferrer">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3588" target="_blank" rel="noopener noreferrer">pull-3588</a> - Rename key roles</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3595" target="_blank" rel="noopener noreferrer">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3600" target="_blank" rel="noopener noreferrer">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3597" target="_blank" rel="noopener noreferrer">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a> - New features for generation subject to constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3519" target="_blank" rel="noopener noreferrer">pull-3519</a> - Basic Conway features test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugfixes">Bugfixes<a class="hash-link" href="#bugfixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3566" target="_blank" rel="noopener noreferrer">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-integration">Plutus integration<a class="hash-link" href="#plutus-integration" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3538" target="_blank" rel="noopener noreferrer">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3593" target="_blank" rel="noopener noreferrer">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3574" target="_blank" rel="noopener noreferrer">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3573" target="_blank" rel="noopener noreferrer">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3555" target="_blank" rel="noopener noreferrer">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3575" target="_blank" rel="noopener noreferrer">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3567" target="_blank" rel="noopener noreferrer">pull-3567</a> - Backport mint field translation bugfix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3568" target="_blank" rel="noopener noreferrer">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3572" target="_blank" rel="noopener noreferrer">pull-3572</a> - Release/backport tickf bugfix</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-41">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22" target="_blank" rel="noopener noreferrer">sprint 41</a><a class="hash-link" href="#high-level-overview-of-sprint-41" title="Direct link to heading">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed
+to provide a safety guarantee for nodes joining the network while still taking
+advantage of the distributed network for nodes that are synced.  This will be
+an intermediate step before Genesis which will allow for further distribute the
+system.  The bootstrap peers will be run by some trusted partners like CF,
+Emurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node
+wallets), which often end up syncing and require access to the honest chain. See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated
+thunks which can lead to memory leaks <a href="https://github.com/input-output-hk/ouroboros-network/issues/4633" target="_blank" rel="noopener noreferrer">ouroboros-network#4633</a>.  We found
+a small one in the peer metric component of the P2P networking stack.  Fixing
+it put us on a small detour of fixing the API of the <a href="https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars" target="_blank" rel="noopener noreferrer"><code>strict-checked-vars</code></a>
+package: <a href="https://github.com/input-output-hk/cardano-base/pulls/431" target="_blank" rel="noopener noreferrer">cardano-base#431</a>, <a href="https://github.com/input-output-hk/cardano-base/pulls/432" target="_blank" rel="noopener noreferrer">cardano-base#432</a>, as well as adding <code>NFData</code>
+instance to <a href="https://github.com/input-output-hk/io-sim/pull/110" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>.  We also improved <code>nothunks</code>
+library to make debugging easier and we provided a <code>NoThunks</code> instance for
+<code>ThreadId</code> which we will need in the future (see <a href="https://github.com/input-output-hk/nothunks/pull/33" target="_blank" rel="noopener noreferrer">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related
+packages to <a href="https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0" target="_blank" rel="noopener noreferrer">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big
+ledger peers, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it&#x27;s not possible to
+shutdown a node which was starting while trying to update network topology,
+see <a href="https://github.com/input-output-hk/cardano-node/pull/5421" target="_blank" rel="noopener noreferrer">cardano-node#5421</a>.</p><p>I didn&#x27;t mention that in the previous update, so here it goes: in the previous
+sprint we released <a href="https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-0.8.2.0</code></a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We&#x27;ve finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We&#x27;ve been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we&#x27;ve successfully performed various benchmarking runs on it.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking
+cluster automation. We&#x27;ve pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint
+when using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any
+inconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.
+This feature adds another layer of robustness to the whole system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler
+versions. We&#x27;ve future-proofed our benchmarking code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend
+accordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we&#x27;ve observed with the
+nomad backend - which will be a big step towards production use.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href="https://github.com/input-output-hk/cardano-ops/pull/416" target="_blank" rel="noopener noreferrer">cardano-ops-pull-416</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href="https://github.com/input-output-hk/cardano-world/pull/104" target="_blank" rel="noopener noreferrer">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/105" target="_blank" rel="noopener noreferrer">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/106" target="_blank" rel="noopener noreferrer">cardano-world-pull-106</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-01-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-01T00:00:00.000Z" itemprop="datePublished">August 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-07-19 - 2023-08-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/116" target="_blank" rel="noopener noreferrer">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/115" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/113" target="_blank" rel="noopener noreferrer">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/111" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/110" target="_blank" rel="noopener noreferrer">Add DRep registration certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/109" target="_blank" rel="noopener noreferrer">Add options to delegate voting stake </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/107" target="_blank" rel="noopener noreferrer">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/106" target="_blank" rel="noopener noreferrer">Release cardano-cli 8.4.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/103" target="_blank" rel="noopener noreferrer">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/100" target="_blank" rel="noopener noreferrer">Change directory structure from Options/.. to EraBased/..</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/98" target="_blank" rel="noopener noreferrer">Era-sensitive command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/90" target="_blank" rel="noopener noreferrer">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/155" target="_blank" rel="noopener noreferrer">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/154" target="_blank" rel="noopener noreferrer">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/152" target="_blank" rel="noopener noreferrer">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/151" target="_blank" rel="noopener noreferrer">Deprecate some constraint functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/150" target="_blank" rel="noopener noreferrer">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/149" target="_blank" rel="noopener noreferrer">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/148" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/147" target="_blank" rel="noopener noreferrer">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/146" target="_blank" rel="noopener noreferrer">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/143" target="_blank" rel="noopener noreferrer">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/142" target="_blank" rel="noopener noreferrer">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/141" target="_blank" rel="noopener noreferrer">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/138" target="_blank" rel="noopener noreferrer">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/137" target="_blank" rel="noopener noreferrer">Support more constraints for Conway witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/135" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/134" target="_blank" rel="noopener noreferrer">Expose toShelleyPoolParams for conway integration</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/131" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/130" target="_blank" rel="noopener noreferrer">Expose more functionality from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/128" target="_blank" rel="noopener noreferrer">Improved feature ergonomics</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/127" target="_blank" rel="noopener noreferrer">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5412" target="_blank" rel="noopener noreferrer">Fix stubbed LogFormatting instances</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5401" target="_blank" rel="noopener noreferrer">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5400" target="_blank" rel="noopener noreferrer">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a><ul><li><a href="https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42" target="_blank" rel="noopener noreferrer">WarmValency</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-29T00:00:00.000Z" itemprop="datePublished">November 29, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released the initial version of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer">Mithril client library</a>, enabling developers to integrate core Mithril features into their applications. They also released a new distribution, <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Release of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released" target="_blank" rel="noopener noreferrer">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href="https://github.com/input-output-hk/mithril/issues/1325" target="_blank" rel="noopener noreferrer">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1375" target="_blank" rel="noopener noreferrer">#1375</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team spent significant time opening a head among
+themselves on <code>mainnet</code> using the release candidate, revealing and
+addressing lurking bugs such as
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a>. Also
+required was this change to dynamically calculate the min utxo value
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, a
+necessary adjustment following the switch to inline datums. The team
+engaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent
+changes and collaborated on drafting feature ideas, including providing
+<a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway support</a>
+for the Hydra roadmap. As part of ongoing improvements, they
+experimented with writing the specification in markdown instead of
+LaTex.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a> in the
+release candidate</li><li>Calculate the min utxo value instead of hard-coding it
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, which is
+needed since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss
+recent changes and way forward</li><li>Drafted features ideas to provide <a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway
+support</a> on the
+Hydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this
+scope</a></li><li>Complete tidying up chain layer via stateless observation changes in
+hydra-node
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway
+<a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#<!-- -->1114</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href="https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href="https://github.com/input-output-hk/cardano-node/pull/5537" target="_blank" rel="noopener noreferrer">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn&#x27;t desired</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/20" target="_blank" rel="noopener noreferrer">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster&#x27;s static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/6" target="_blank" rel="noopener noreferrer">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster&#x27;s static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offchain-metadata-tools">Offchain-metadata-tools<a class="hash-link" href="#offchain-metadata-tools" title="Direct link to heading">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href="https://github.com/input-output-hk/offchain-metadata-tools/pull/61" target="_blank" rel="noopener noreferrer">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-22T00:00:00.000Z" itemprop="datePublished">November 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of
+CDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not
+previously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no
+longer allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting
+with Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3858" target="_blank" rel="noopener noreferrer">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3860" target="_blank" rel="noopener noreferrer">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3864" target="_blank" rel="noopener noreferrer">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3859" target="_blank" rel="noopener noreferrer">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3867" target="_blank" rel="noopener noreferrer">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3869" target="_blank" rel="noopener noreferrer">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3863" target="_blank" rel="noopener noreferrer">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3861" target="_blank" rel="noopener noreferrer">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3875" target="_blank" rel="noopener noreferrer">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3876" target="_blank" rel="noopener noreferrer">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3884" target="_blank" rel="noopener noreferrer">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3868" target="_blank" rel="noopener noreferrer">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3792" target="_blank" rel="noopener noreferrer">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3885" target="_blank" rel="noopener noreferrer">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3886" target="_blank" rel="noopener noreferrer">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3854" target="_blank" rel="noopener noreferrer">pull-3854</a> - Integration work for node 8.7.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3872" target="_blank" rel="noopener noreferrer">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3871" target="_blank" rel="noopener noreferrer">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3874" target="_blank" rel="noopener noreferrer">pull-3874</a> - Post release changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3880" target="_blank" rel="noopener noreferrer">pull-3880</a> - Remove generic-monoid dependency</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3887" target="_blank" rel="noopener noreferrer">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-22T00:00:00.000Z" itemprop="datePublished">November 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1326" target="_blank" rel="noopener noreferrer">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href="https://github.com/input-output-hk/mithril/issues/1352" target="_blank" rel="noopener noreferrer">#1352</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-31-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-31T00:00:00.000Z" itemprop="datePublished">July 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update-sprints-39--40">Network Update (Sprints 39 &amp; 40)<a class="hash-link" href="#network-update-sprints-39--40" title="Direct link to heading">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.
+It was great to see and talk to so many of the community members.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-39-jun-26---jul-09">Sprint 39 (Jun 26 - Jul 09)<a class="hash-link" href="#sprint-39-jun-26---jul-09" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes">Major changes<a class="hash-link" href="#major-changes" title="Direct link to heading">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-client-protocol"><code>node-to-client</code> protocol<a class="hash-link" href="#node-to-client-protocol" title="Direct link to heading">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-node-protocol"><code>node-to-node</code> protocol<a class="hash-link" href="#node-to-node-protocol" title="Direct link to heading">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.
+The <code>cardano-client-0.2.0.0</code> was not affected.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4612" target="_blank" rel="noopener noreferrer">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).
+Dynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.
+See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">ouroboros-network#4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="minor-changes">Minor changes<a class="hash-link" href="#minor-changes" title="Direct link to heading">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-40-jul-09---jul-23">Sprint 40 (Jul 09 - Jul 23)<a class="hash-link" href="#sprint-40-jul-09---jul-23" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes-1">Major changes<a class="hash-link" href="#major-changes-1" title="Direct link to heading">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).
+This includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.
+This feature is documented in the <a href="https://github.com/input-output-hk/cardano-node/pull/5399" target="_blank" rel="noopener noreferrer">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre" target="_blank" rel="noopener noreferrer">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.
+Peer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">ouroboros-network#4620</a>.
+The improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.
+Previously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.
+The hot valency (previously known simply as valency) hasn&#x27;t changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.
+Warm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">cardano-node#5409</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-28-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-28T00:00:00.000Z" itemprop="datePublished">July 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.
+They conducted the monthly review meeting for July, which continously ensures
+transparent communication and project evaluation. The team migrated the core
+logic of the node to an event-sourced architecture and incremental writes of
+events to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.
+Furthermore, the team added the ability to read protocol parameters via the API
+and fixed the CI workflows to support pull requests from forks of external
+contributors, streamlining the development process for community involvement.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting for July (<a href="https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/" target="_blank" rel="noopener noreferrer">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href="https://github.com/input-output-hk/hydra/pull/999" target="_blank" rel="noopener noreferrer">#999</a></li><li>Updated persistence to faster incremental writes of events <a href="https://github.com/input-output-hk/hydra/pull/1000" target="_blank" rel="noopener noreferrer">#1000</a></li><li>Added ability to read protocol parameters via API <a href="https://github.com/input-output-hk/hydra/issues/735" target="_blank" rel="noopener noreferrer">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href="https://github.com/input-output-hk/hydra/pull/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Updated to GHC 9.2.8 <a href="https://github.com/input-output-hk/hydra/pull/1005" target="_blank" rel="noopener noreferrer">#1005</a></li><li>Prepared an updated use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a> (published with next release)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-27-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-27T00:00:00.000Z" itemprop="datePublished">July 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team launched <strong>Mithril protocol’s mainnet beta</strong>: the <code>release-mainnet</code> network is now open for signer registrations, and its genesis certificate has been created. The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href="https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide" target="_blank" rel="noopener noreferrer">onboarding SPOs</a> and setting up a <a href="https://mithril.network/doc/manual/getting-started/run-signer-node" target="_blank" rel="noopener noreferrer">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the dev blog post <a href="https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch" target="_blank" rel="noopener noreferrer">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Completed the issue <code>Add a &#x27;sign&#x27; sub-command to &#x27;genesis&#x27; command in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1081" target="_blank" rel="noopener noreferrer">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance &#x27;Run a Mithril Signer node (SPO)&#x27; guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1055" target="_blank" rel="noopener noreferrer">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href="https://github.com/input-output-hk/mithril/issues/1073" target="_blank" rel="noopener noreferrer">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href="https://github.com/input-output-hk/mithril/issues/834" target="_blank" rel="noopener noreferrer">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of &#x27;ProtocolVerificationKey&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1083" target="_blank" rel="noopener noreferrer">#1083</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-26-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-26T00:00:00.000Z" itemprop="datePublished">July 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.
+We also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.
+Currently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-liaising">Genesis liaising<a class="hash-link" href="#genesis-liaising" title="Direct link to heading">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/222" target="_blank" rel="noopener noreferrer">#222</a>.</li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/233" target="_blank" rel="noopener noreferrer">#233</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated the specification to align with recent
+off-chain protocol changes, completed refactoring the snapshot emission
+in preparation for event-sourced protocol logic, and updated to GHC
+9.2.7, resulting in improved compile times and slightly smaller Plutus
+scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol
+changes to complete
+<a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Refactored the snapshot emission logic in preparation for event
+sourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and
+slightly smaller plutus scripts.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence
+<a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Update the use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a></li><li>Remove deprecated internal commit
+<a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/19"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/21"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.
+All members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.
+We also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).
+Additionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.
+We also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-we-achieved">What we achieved<a class="hash-link" href="#what-we-achieved" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3521" target="_blank" rel="noopener noreferrer">pull-3521</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3554" target="_blank" rel="noopener noreferrer">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3520" target="_blank" rel="noopener noreferrer">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3531" target="_blank" rel="noopener noreferrer">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3558" target="_blank" rel="noopener noreferrer">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3550" target="_blank" rel="noopener noreferrer">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3551" target="_blank" rel="noopener noreferrer">pull-3551</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3546" target="_blank" rel="noopener noreferrer">pull-3546</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3472" target="_blank" rel="noopener noreferrer">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3146" target="_blank" rel="noopener noreferrer">issue-3146</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3498" target="_blank" rel="noopener noreferrer">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2948" target="_blank" rel="noopener noreferrer">issue-2948</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3499" target="_blank" rel="noopener noreferrer">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-currently-in-progress">What is currently in progress<a class="hash-link" href="#what-is-currently-in-progress" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3494" target="_blank" rel="noopener noreferrer">issue-3494</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3436" target="_blank" rel="noopener noreferrer">issue-3436</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3509" target="_blank" rel="noopener noreferrer">issue-3509</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3532" target="_blank" rel="noopener noreferrer">issue-3532</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a>] Add script-support for the constitution</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3543" target="_blank" rel="noopener noreferrer">issue-3543</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a>] Improve the &#x27;new committee&#x27; governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href="https://github.com/input-output-hk/cardano-node/pull/5406" target="_blank" rel="noopener noreferrer">cardano-node-pull-5406</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href="https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href="https://github.com/input-output-hk/cardano-world/pull/102" target="_blank" rel="noopener noreferrer">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/103" target="_blank" rel="noopener noreferrer">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href="https://github.com/input-output-hk/cardano-world/pull/91" target="_blank" rel="noopener noreferrer">cardano-world-pull-91</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/iohk-nix/pull/549" target="_blank" rel="noopener noreferrer">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href="https://github.com/input-output-hk/iohk-nix/pull/550" target="_blank" rel="noopener noreferrer">iohk-nix-pull-550</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-20-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-20T00:00:00.000Z" itemprop="datePublished">July 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on formalising mini protocols, the performance
+modelling prototype and also finishing off their ICE papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the
+thorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of
+mini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete
+backend based on piecewise-polynomials</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-18-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-18T00:00:00.000Z" itemprop="datePublished">July 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-07-05 - 2023-07-18</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/74" target="_blank" rel="noopener noreferrer">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/72" target="_blank" rel="noopener noreferrer">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/68" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/67" target="_blank" rel="noopener noreferrer">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/66" target="_blank" rel="noopener noreferrer">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/65" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/123" target="_blank" rel="noopener noreferrer">Fix ghc version CPP</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/122" target="_blank" rel="noopener noreferrer">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/119" target="_blank" rel="noopener noreferrer">Incorporate remaining ledger certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/117" target="_blank" rel="noopener noreferrer">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/115" target="_blank" rel="noopener noreferrer">Fix Eq, Show for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/112" target="_blank" rel="noopener noreferrer">Wire up remaining governance actions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/108" target="_blank" rel="noopener noreferrer">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/106" target="_blank" rel="noopener noreferrer">Remove unnecessary constraint</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/104" target="_blank" rel="noopener noreferrer">Make it build with ghc-9.6</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/103" target="_blank" rel="noopener noreferrer">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/102" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/101" target="_blank" rel="noopener noreferrer">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/99" target="_blank" rel="noopener noreferrer">Update ledger and consensus</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/98" target="_blank" rel="noopener noreferrer">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5391" target="_blank" rel="noopener noreferrer">Fix Shutdown test for new exit codes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5387" target="_blank" rel="noopener noreferrer">Fix markdown links</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/69" target="_blank" rel="noopener noreferrer">Apply <code>stylish-haskell</code> to project</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-14T00:00:00.000Z" itemprop="datePublished">July 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order
+to improve <code>hydra-node</code> performance. Because of this work the team noticed we
+need to refactor the emit snapshot emission logic and update the spec in the
+light of new changes. They also took the time to revisit their goals and product
+plans for the next quarter as well as doing some security fixes related to
+multisignatures.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/963" target="_blank" rel="noopener noreferrer">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4" target="_blank" rel="noopener noreferrer">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href="https://github.com/input-output-hk/hydra/pull/962" target="_blank" rel="noopener noreferrer">#962</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement Event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Remove deprecated internal commit <a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a> and close <a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/20"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/22"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-13-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-13T00:00:00.000Z" itemprop="datePublished">July 13, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a> distribution. They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li><li>Worked on the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/932" target="_blank" rel="noopener noreferrer">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1037" target="_blank" rel="noopener noreferrer">#1037</a></li><li>Completed the issue <code>Add &#x27;created_at&#x27; in Mithril Stake Distribution messages</code> <a href="https://github.com/input-output-hk/mithril/issues/1030" target="_blank" rel="noopener noreferrer">#1030</a></li><li>Completed the issue <code>Add a &#x27;run-only&#x27; option in end to end test</code> <a href="https://github.com/input-output-hk/mithril/issues/1048" target="_blank" rel="noopener noreferrer">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href="https://github.com/input-output-hk/mithril/issues/1058" target="_blank" rel="noopener noreferrer">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/874" target="_blank" rel="noopener noreferrer">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href="https://github.com/input-output-hk/mithril/issues/1040" target="_blank" rel="noopener noreferrer">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href="https://github.com/input-output-hk/mithril/issues/1041" target="_blank" rel="noopener noreferrer">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href="https://github.com/input-output-hk/mithril/issues/952" target="_blank" rel="noopener noreferrer">#952</a></li><li>Completed the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/837" target="_blank" rel="noopener noreferrer">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href="https://github.com/input-output-hk/mithril/issues/1035" target="_blank" rel="noopener noreferrer">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1023" target="_blank" rel="noopener noreferrer">#1023</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-12-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/200" target="_blank" rel="noopener noreferrer">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-12-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes_agent">kes_agent<a class="hash-link" href="#kes_agent" title="Direct link to heading">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href="https://github.com/input-output-hk/kes-agent/issues/14" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Included benchmarks and further tests.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cips-and-community">CIPs and community<a class="hash-link" href="#cips-and-community" title="Direct link to heading">​</a></h3><ul><li>Addressed some review comments in <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#PR506</a></li><li>Worked with the communityt on <a href="https://github.com/cardano-foundation/CIPs/pull/524" target="_blank" rel="noopener noreferrer">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers
+for publication in EPTCS, formalising concensus, and investigating chain
+sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/21"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/23"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the
+network layer further by implementing authentication of the messages between the
+peers in the Head protocol. In the process they also managed to separate
+HeartBeat messages from the protocol ones which somewhat improved the quality of
+code in Hydra. The team also finished work related to sending only transaction
+ids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark
+publishing on the website.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">Implemented</a> authenticated messages</li><li><a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href="https://github.com/input-output-hk/hydra/pull/969" target="_blank" rel="noopener noreferrer">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href="https://github.com/input-output-hk/hydra/pull/947" target="_blank" rel="noopener noreferrer">benchmarks</a></li><li><a href="https://github.com/input-output-hk/hydra/pull/967" target="_blank" rel="noopener noreferrer">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href="https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1" target="_blank" rel="noopener noreferrer">off-chain signature
+verification</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href="https://github.com/input-output-hk/cardano-node/pull/5360" target="_blank" rel="noopener noreferrer">cardano-node-pull-5360</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ogmios">Cardano-ogmios<a class="hash-link" href="#cardano-ogmios" title="Direct link to heading">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href="https://github.com/input-output-hk/cardano-ogmios/pull/6" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-6</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href="https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-rosetta">Cardano-rosetta<a class="hash-link" href="#cardano-rosetta" title="Direct link to heading">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href="https://github.com/cardano-foundation/cardano-rosetta/pull/532" target="_blank" rel="noopener noreferrer">cardano-rosetta-pull-532</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href="https://github.com/input-output-hk/cardano-world/pull/99" target="_blank" rel="noopener noreferrer">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href="https://github.com/input-output-hk/cardano-world/pull/100" target="_blank" rel="noopener noreferrer">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href="https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href="https://github.com/input-output-hk/cardano-world/pull/101" target="_blank" rel="noopener noreferrer">cardano-world-pull-101</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href="https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911" target="_blank" rel="noopener noreferrer">spongix-simple-branch</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-06-developer-experience">Developer Experience Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-06T00:00:00.000Z" itemprop="datePublished">July 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We&#x27;ve also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="hydra-tools">Hydra Tools<a class="hash-link" href="#hydra-tools" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/hydra-tools" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-04-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1455" target="_blank" rel="noopener noreferrer">#1455</a>.</li><li>This also fixes a bug
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1451" target="_blank" rel="noopener noreferrer">#1451</a></li><li>Added new tests to the new tx_out options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency
+This fixes many other issues and simplifies the logic in db-sync
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1447" target="_blank" rel="noopener noreferrer">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1436" target="_blank" rel="noopener noreferrer">#1436</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1442" target="_blank" rel="noopener noreferrer">#1442</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1448" target="_blank" rel="noopener noreferrer">#1448</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1452" target="_blank" rel="noopener noreferrer">#1452</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-04-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-06-21 - 2023-07-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance &quot;Update constitution&quot; governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/60" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/44" target="_blank" rel="noopener noreferrer">Release 8.2.1</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/39" target="_blank" rel="noopener noreferrer">Use new function-based API instead of using query data types directly</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/94" target="_blank" rel="noopener noreferrer">Release cardano-api 8.7</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/92" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/90" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/88" target="_blank" rel="noopener noreferrer">Backport: Add era phantom type parameter to Certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/86" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/85" target="_blank" rel="noopener noreferrer">Voting procedure and proposal procedure updates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/84" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/83" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/77" target="_blank" rel="noopener noreferrer">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/70" target="_blank" rel="noopener noreferrer">Update CHaP index</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/41" target="_blank" rel="noopener noreferrer">CIP-1694 API - Part 1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node top level error handler</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5364" target="_blank" rel="noopener noreferrer">Report payment address and UTxOs in testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5362" target="_blank" rel="noopener noreferrer">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/33" target="_blank" rel="noopener noreferrer">Release workflow description</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/75" target="_blank" rel="noopener noreferrer">Add PR changelog check</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/71" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/62" target="_blank" rel="noopener noreferrer">Enable CI on PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/53" target="_blank" rel="noopener noreferrer">Remove merge_group trigger from changelog check CI</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/46" target="_blank" rel="noopener noreferrer">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/41" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/40" target="_blank" rel="noopener noreferrer">Enable CI in PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/48" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/22"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/24"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-30-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-30T00:00:00.000Z" itemprop="datePublished">June 30, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,
+implemented the end-to-end functionality for external commits, and tested it on
+the preview environment. They also listed Hydra as a tool on the Cardano
+developer portal, providing more visibility for the project. The team clarified
+the path forward for L2 protocol improvements and explored an alternative CI
+approach using cabal instead of nix. Additionally, they released version 0.11.0,
+marking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Written and published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-06" target="_blank" rel="noopener noreferrer">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li><li>Listed Hydra as a tool on cardano <a href="https://developers.cardano.org/tools/" target="_blank" rel="noopener noreferrer">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Established an alternative CI using more cabal tools <a href="https://github.com/input-output-hk/hydra/pull/923" target="_blank" rel="noopener noreferrer">#923</a></li><li>Release version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.11.0</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Complete ReqSn only sends transaction ids <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-29-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-29T00:00:00.000Z" itemprop="datePublished">June 29, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano <code>mainnet</code> infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1018" target="_blank" rel="noopener noreferrer">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href="https://github.com/input-output-hk/mithril/issues/1017" target="_blank" rel="noopener noreferrer">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href="https://github.com/input-output-hk/mithril/issues/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href="https://github.com/input-output-hk/mithril/issues/1006" target="_blank" rel="noopener noreferrer">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Completed the issue <code>Add &#x27;recompute-certificates-hash&#x27; command to aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1001" target="_blank" rel="noopener noreferrer">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/984" target="_blank" rel="noopener noreferrer">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/944" target="_blank" rel="noopener noreferrer">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/978" target="_blank" rel="noopener noreferrer">#978</a></li><li>Completed the issue <code>Clean &#x27;pending_snapshot&#x27; directory of aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/983" target="_blank" rel="noopener noreferrer">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href="https://github.com/input-output-hk/mithril/issues/1000" target="_blank" rel="noopener noreferrer">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/982" target="_blank" rel="noopener noreferrer">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1010" target="_blank" rel="noopener noreferrer">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.1&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/973" target="_blank" rel="noopener noreferrer">#973</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-28-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722" target="_blank" rel="noopener noreferrer">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/149" target="_blank" rel="noopener noreferrer">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/87" target="_blank" rel="noopener noreferrer">added</a> a new &quot;legacy&quot; cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don&#x27;t involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-28-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We&#x27;ve looked into an issue where the tracing system&#x27;s concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9&#x27;s significantly different inlining behaviour may produce those effects. We&#x27;re currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The tracing system&#x27;s concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we&#x27;ve been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we&#x27;re continuing the new backend&#x27;s validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/23"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/25"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/pgrange.png" alt="Pascal Grange"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Pascal Grange</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review
+meeting (monthly report and video recording available soon) and started
+experimenting on preview network with the new commit from external wallet
+feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">commit from external
+wallet</a></li><li>Published regular <a href="https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks" target="_blank" rel="noopener noreferrer">benchmarks for
+Hydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs
+<a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full
+transactions <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a> -&gt; this
+is now evolved into fully addressing <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet
+<a href="https://github.com/input-output-hk/hydra/pull/924" target="_blank" rel="noopener noreferrer">#924</a></li><li>Add flag option to display node version on tui
+<a href="https://github.com/input-output-hk/hydra/pull/934" target="_blank" rel="noopener noreferrer">#934</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions">Key contributions<a class="hash-link" href="#key-contributions" title="Direct link to heading">​</a></h3><p>We held a series of session to review the implementation of big ledger peers
+(eclipse evasion). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec
+and protocol implementation.  We worked out a nice solution which takes
+advantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we
+provide <code>Any</code> type which gen generate almost any CBOR term (some are excluded
+only because they are not decoded back to the same form, and we relay on that
+property).  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has
+a limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is
+ignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that
+the format of messages has changed, timestamps are printed in ISO8601 format.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">#4601</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">#5326</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers
+when the chain is close to the tip, we continued to work on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.  This is
+currently in review, the consensus team will need to provide us with the new
+api.  This feature is useful for two reasons: makes it easier to maintain
+a topology file, it will also limit the traffic on public roots generated by
+for example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design
+&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-changes">Other smaller changes<a class="hash-link" href="#other-smaller-changes" title="Direct link to heading">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger
+peers DNS names are resolved concurrently, and at most 2 local root peer DNS
+names. See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">#4596</a>.</p><p>We fixed handshake query timeout in <a href="https://github.com/input-output-hk/ouroboros-network/pull/4603" target="_blank" rel="noopener noreferrer">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the
+consensus team, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">#4608</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href="https://github.com/input-output-hk/cardano-node/pull/5318" target="_blank" rel="noopener noreferrer">cardano-node-pull-5318</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href="https://github.com/input-output-hk/cardano-ops/pull/414" target="_blank" rel="noopener noreferrer">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/tree/ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-ops-local</a>, <a href="https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p" target="_blank" rel="noopener noreferrer">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/cardano-world/pull/96" target="_blank" rel="noopener noreferrer">cardano-world-pull-96</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href="https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9" target="_blank" rel="noopener noreferrer">ci-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href="https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250" target="_blank" rel="noopener noreferrer">ci-world-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx-ci">Devx-ci<a class="hash-link" href="#devx-ci" title="Direct link to heading">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href="https://github.com/input-output-hk/devx-ci" target="_blank" rel="noopener noreferrer">devx-ci-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/iohk-nix/pull/545" target="_blank" rel="noopener noreferrer">iohk-nix-pull-545</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-16-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-16T00:00:00.000Z" itemprop="datePublished">June 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and
+experiment operating a head on mainnet. They collected several bugs and issues
+and worked on fixing them. Now the team is soon to release a new version,
+0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li><li>Solved one user issue <a href="https://github.com/input-output-hk/hydra/issues/914" target="_blank" rel="noopener noreferrer">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href="https://github.com/input-output-hk/hydra/pull/928" target="_blank" rel="noopener noreferrer">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-15T00:00:00.000Z" itemprop="datePublished">June 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for &#x27;Mithril Stake Distribution&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/896" target="_blank" rel="noopener noreferrer">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/960" target="_blank" rel="noopener noreferrer">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the &#x27;mainnet&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/962" target="_blank" rel="noopener noreferrer">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and  &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href="https://github.com/input-output-hk/mithril/issues/953" target="_blank" rel="noopener noreferrer">#953</a></li><li>Completed the issue <code>CI tests fail with Rust &#x27;1.70.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/958" target="_blank" rel="noopener noreferrer">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Worked on the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Fix &#x27;Mithril Client multi-platform test&#x27; with new client interface</code> <a href="https://github.com/input-output-hk/mithril/issues/956" target="_blank" rel="noopener noreferrer">#956</a></li><li>Completed the issue <code>Enhance &#x27;ImmutableDigesterError::NotEnoughImmutable&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/969" target="_blank" rel="noopener noreferrer">#969</a></li><li>Completed the issue <code>Client &#x27;snapshot download&#x27; command fails with option &#x27;--download-dir&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/979" target="_blank" rel="noopener noreferrer">#979</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/24"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/26"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-14-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.
+There is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated &quot;Limit on Patience&quot; timeout sufficiently bounds how long the adversary can inflate a victim&#x27;s overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.
+We managed to run a node again with UTxO-HD enabled.
+We also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-14-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We&#x27;ve performed the first full runs on the new backend.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we&#x27;ve measured
+performance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts
+done on several system components.  </p><p>In the meantime, we&#x27;ve finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for
+benchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be
+meaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific
+trace messages are closely aligned. We&#x27;ve found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we&#x27;ve had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As the new backend&#x27;s healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we&#x27;ve performed our first 52-node cluster runs on nomad cloud. We&#x27;re currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new
+infrastructure to the existing ones, including determining reproducibility and variance.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-12T00:00:00.000Z" itemprop="datePublished">June 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions-and-advances">Key contributions and advances<a class="hash-link" href="#key-contributions-and-advances" title="Direct link to heading">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers
+into outbound governor known peers.  This is the primary way for new
+unregistered nodes to enter the network, which then can be shared using peer
+sharing.  Note that peer sharing is an experimental feature which is disabled
+until genesis &amp; eclipse evasion as fully implemented. See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots
+where ignored until the first domain name was resolved, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4583" target="_blank" rel="noopener noreferrer">#4583</a>.  The bug
+fix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">#140</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-cardano-ping--cardano-cli-ping-release">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class="hash-link" href="#new-cardano-ping--cardano-cli-ping-release" title="Direct link to heading">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new
+query feature (query supported versions). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">#4589</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">#4593</a> and <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>.
+The new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted
+timestamps; also the formatting of ping results is slightly improved, and it
+will introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site
+supports the query parameter, the command will print:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.064</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.045</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which
+allows us to detect whether the remote side is an <code>InitiatorOnly</code> or
+<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce
+itself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-contributions">Other smaller contributions<a class="hash-link" href="#other-smaller-contributions" title="Direct link to heading">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,
+which are now available <a href="https://input-output-hk.github.io/typed-protocols/" target="_blank" rel="noopener noreferrer">here</a> (<a href="https://github.com/input-output-hk/typed-protocols/pull/40" target="_blank" rel="noopener noreferrer">#40</a>, <a href="https://github.com/input-output-hk/typed-protocols/pull/41" target="_blank" rel="noopener noreferrer">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in
+package description file, <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new
+<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.
+The PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4580" target="_blank" rel="noopener noreferrer">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows&#x27; localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc" target="_blank" rel="noopener noreferrer">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue" target="_blank" rel="noopener noreferrer">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-developer-experience">Developer Experience Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We&#x27;ve also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href="https://github.com/input-output-hk/cardano-base" target="_blank" rel="noopener noreferrer">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we&#x27;re prioritizing compaining even stronger for better backwards compatibility.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="chap-cardano-haskell-packages">CHaP (cardano-haskell-packages)<a class="hash-link" href="#chap-cardano-haskell-packages" title="Direct link to heading">​</a></h3><p>We relocated the underlying tooling, (<a href="https://github.com/input-output-hk/foliage" target="_blank" rel="noopener noreferrer">foliage</a>), for <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/260" target="_blank" rel="noopener noreferrer">improved tooling to quickly add constraints to packages</a>, <a href="https://github.com/input-output-hk/cardano-haskell-packages/issues/285" target="_blank" rel="noopener noreferrer">better error reporting for add-revision</a> and <a href="https://github.com/input-output-hk/foliage/pull/63" target="_blank" rel="noopener noreferrer">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="github-actions">GitHub Actions<a class="hash-link" href="#github-actions" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/iohk-nix" target="_blank" rel="noopener noreferrer">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The relatively new <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository&#x27;s readme has been updated to reflect its purpose and usage guidelines.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/25"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/27"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the
+investigation about the broken head on mainnet and re-opened their persistent
+head instance. The team also fixed the monthly report publication on their
+website and started sketching ideas and further improvements. Also, they are on
+the last mile to deliver a new feature which will allow parties to commit funds
+from extern wallets. Finally the team started to work on optimizing the
+performance on their benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a></li><li>Fix monthly report publication on docs website and published the <a href="https://hydra.family/head-protocol/monthly/2023-05" target="_blank" rel="noopener noreferrer">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href="https://github.com/input-output-hk/hydra/issues/908" target="_blank" rel="noopener noreferrer">#908</a></li><li>Open issue to docusaurus <a href="https://github.com/facebook/docusaurus/issues/9036" target="_blank" rel="noopener noreferrer">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href="https://github.com/input-output-hk/hydra/pull/910" target="_blank" rel="noopener noreferrer">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a
+bottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide
+regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li><li>Add hydra as tool to developer platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that
+the consensus team is working on
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/88" target="_blank" rel="noopener noreferrer">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1416" target="_blank" rel="noopener noreferrer">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1419" target="_blank" rel="noopener noreferrer">#1419</a></li><li>Fixed issue with ada_pots being wrong
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href="https://github.com/input-output-hk/cardano-db-sync/releases" target="_blank" rel="noopener noreferrer"><code>13.1.1.2</code></a>
+which is tested and ready to release. It contains many of the above.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on giving and preparing public
+talks, also on preparing final versions of their ICE 2023 papers, and
+on analysing chain selection.</p><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:
+<a href="https://www.lambdadays.org/lambdadays2023" target="_blank" rel="noopener noreferrer">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:
+<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href="https://github.com/input-output-hk/bitte/pull/194" target="_blank" rel="noopener noreferrer">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href="https://github.com/input-output-hk/bitte/pull/201" target="_blank" rel="noopener noreferrer">bitte-pull-201</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-cells">Bitte-cells<a class="hash-link" href="#bitte-cells" title="Direct link to heading">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href="https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex" target="_blank" rel="noopener noreferrer">bitte-cells-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-graphql">Cardano-graphql<a class="hash-link" href="#cardano-graphql" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href="https://github.com/input-output-hk/cardano-graphql/pull/815" target="_blank" rel="noopener noreferrer">cardano-graphql-pull-815</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href="https://github.com/input-output-hk/cardano-node/pull/5241" target="_blank" rel="noopener noreferrer">cardano-node-pull-5241</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href="https://github.com/input-output-hk/cardano-ops/pull/411" target="_blank" rel="noopener noreferrer">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/compare/master...ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href="https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href="https://github.com/input-output-hk/cardano-world/pull/68" target="_blank" rel="noopener noreferrer">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href="https://github.com/input-output-hk/cardano-world/pull/69" target="_blank" rel="noopener noreferrer">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/75" target="_blank" rel="noopener noreferrer">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href="https://github.com/input-output-hk/cardano-world/pull/77" target="_blank" rel="noopener noreferrer">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href="https://github.com/input-output-hk/cardano-world/pull/79" target="_blank" rel="noopener noreferrer">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/84" target="_blank" rel="noopener noreferrer">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href="https://github.com/input-output-hk/cardano-world/pull/87" target="_blank" rel="noopener noreferrer">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href="https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href="https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href="https://github.com/input-output-hk/cardano-world/pull/92" target="_blank" rel="noopener noreferrer">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/cardano-world/pull/93" target="_blank" rel="noopener noreferrer">cardano-world-pr-93</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href="https://github.com/input-output-hk/ci-ops/pull/108" target="_blank" rel="noopener noreferrer">ci-ops-pull-108</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href="https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f" target="_blank" rel="noopener noreferrer">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/22" target="_blank" rel="noopener noreferrer">ci-world-pull-22</a></li><li>Migrate patroni HA db to it&#x27;s own namespace in ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/24" target="_blank" rel="noopener noreferrer">ci-world-pull-24</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href="https://github.com/input-output-hk/cicero/pull/79" target="_blank" rel="noopener noreferrer">cicero-pull-79</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href="https://github.com/input-output-hk/iohk-nix/pull/534" target="_blank" rel="noopener noreferrer">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/iohk-nix/pull/544" target="_blank" rel="noopener noreferrer">iohk-nix-pull-544</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">Openziti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href="https://github.com/johnalotoski/openziti-bins/pull/1" target="_blank" rel="noopener noreferrer">openziti-bins-pull-1</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html" target="_blank" rel="noopener noreferrer">1.35.7</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html" target="_blank" rel="noopener noreferrer">8.0.0</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/26"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/28"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-07-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-07T00:00:00.000Z" itemprop="datePublished">June 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-06-07 - 2023-06-20</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5316" target="_blank" rel="noopener noreferrer">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">Updated cardano-cli ping command</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/28" target="_blank" rel="noopener noreferrer">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/25" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/24" target="_blank" rel="noopener noreferrer">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/20" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/59" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/58" target="_blank" rel="noopener noreferrer">New <code>requireShelleyBasedEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/57" target="_blank" rel="noopener noreferrer">New version cardano-api-8.5.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/56" target="_blank" rel="noopener noreferrer">New <code>queryEpoch</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/55" target="_blank" rel="noopener noreferrer">New version 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/54" target="_blank" rel="noopener noreferrer">Error on <code>hlint</code> warnings in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/53" target="_blank" rel="noopener noreferrer">Additional query expression functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/52" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/49" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/48" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/47" target="_blank" rel="noopener noreferrer">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/46" target="_blank" rel="noopener noreferrer">Revert to use <code>testProperty</code> now that it isn&#x27;t deprecated anymore</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1" target="_blank" rel="noopener noreferrer">cardano-node 8.1.1 release</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5340" target="_blank" rel="noopener noreferrer">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5339" target="_blank" rel="noopener noreferrer">Move golden files to proper location</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5336" target="_blank" rel="noopener noreferrer">Conway testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5335" target="_blank" rel="noopener noreferrer">Don&#x27;t retry testnet when failed</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5321" target="_blank" rel="noopener noreferrer">Remove YAML filepath record from data Conf</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5309" target="_blank" rel="noopener noreferrer">Remove duplicate --testnet-magic flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5307" target="_blank" rel="noopener noreferrer">Restructure cardano testnet </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/18" target="_blank" rel="noopener noreferrer">Fix Windows CI issues</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-02-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-02T00:00:00.000Z" itemprop="datePublished">June 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many
+different problems, such as our broken head on mainnet
+<a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>, our fragile monthly
+report publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for
+external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.
+Although most of these items are still open, huge progress has been made. To
+accelerate the investigation, they improved their logging to give more precise
+errors when a transition requirement fails, and to reduce duplication on effets
+logged content. Last but not least, the team is exploring formal methods and
+attended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href="https://github.com/input-output-hk/hydra/pull/895" target="_blank" rel="noopener noreferrer">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href="https://github.com/input-output-hk/hydra/pull/896" target="_blank" rel="noopener noreferrer">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href="https://github.com/input-output-hk/hydra/pull/893" target="_blank" rel="noopener noreferrer">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-01T00:00:00.000Z" itemprop="datePublished">June 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a> distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href="https://github.com/input-output-hk/mithril/issues/925" target="_blank" rel="noopener noreferrer">#925</a></li><li>Completed the issue <code>Create the sub-command for &#x27;Cardano Immutable Files Full&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/895" target="_blank" rel="noopener noreferrer">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/933" target="_blank" rel="noopener noreferrer">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/892" target="_blank" rel="noopener noreferrer">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href="https://github.com/input-output-hk/mithril/issues/512" target="_blank" rel="noopener noreferrer">#512</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-31-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network&#x27;s ledger-peer selection (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101" target="_blank" rel="noopener noreferrer">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-31-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We&#x27;ve discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build
+configuration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive
+to benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile
+we&#x27;d expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way
+shorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great
+support when evaluating different compiler versions or RTS flags incrementally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various
+logging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to
+directly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;re currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with
+job definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing
+benchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible
+and offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate
+very specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/27"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/29"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their
+monthly review meeting and drafted the report for May. They made progress on
+implementing the first end-to-end journey for external commits using &quot;Option A&quot;
+for normal UTxOs, while still considering &quot;Option B&quot;. The team also integrated a
+Spanish translation contributed by the community, created micro-benchmarks for
+transaction validation and deserialization, and made improvements to
+hydra-node&#x27;s version reporting. Last but not least, they implemented the ability
+to commit multiple UTxOs to a head at once.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting (<a href="https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view" target="_blank" rel="noopener noreferrer">recording</a> + <a href="https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA" target="_blank" rel="noopener noreferrer">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->
+for normal UTxOs <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href="https://github.com/input-output-hk/hydra/pull/884" target="_blank" rel="noopener noreferrer">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href="https://github.com/input-output-hk/hydra/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete external commits with script UTxOs <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation
+of the new certificates is near complete, we refactored some of our data structures
+to be able to support DReps, we cleaned up the serialization format, and renamed things to make
+clearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.
+And, as always, we continue to address technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3408" target="_blank" rel="noopener noreferrer">pull-3408</a> - Improve conway delegation certificates</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3428" target="_blank" rel="noopener noreferrer">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3426" target="_blank" rel="noopener noreferrer">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3425" target="_blank" rel="noopener noreferrer">pull-3425</a> - Improve witness logic needed for conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3423" target="_blank" rel="noopener noreferrer">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3421" target="_blank" rel="noopener noreferrer">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3454" target="_blank" rel="noopener noreferrer">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improve-testing">Improve testing<a class="hash-link" href="#improve-testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3403" target="_blank" rel="noopener noreferrer">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3410" target="_blank" rel="noopener noreferrer">pull-3410</a> - Update chaps index</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3416" target="_blank" rel="noopener noreferrer">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3414" target="_blank" rel="noopener noreferrer">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3420" target="_blank" rel="noopener noreferrer">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3441" target="_blank" rel="noopener noreferrer">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3409" target="_blank" rel="noopener noreferrer">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3407" target="_blank" rel="noopener noreferrer">pull-3407</a> -  Fixup release process documentation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3404" target="_blank" rel="noopener noreferrer">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3402" target="_blank" rel="noopener noreferrer">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3424" target="_blank" rel="noopener noreferrer">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3432" target="_blank" rel="noopener noreferrer">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3440" target="_blank" rel="noopener noreferrer">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug
+when using DNS names in local root peers.  We continued working on engineering
+blog post about P2P. We released a new version of packages for
+<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks
+if <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><ul><li>Eclipse evasion: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a></li><li>Local root peers bug fix: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">#4559</a></li><li>Release to CHaP: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li><li>CI improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">#4572</a></li><li>Release script improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-24-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-24T00:00:00.000Z" itemprop="datePublished">May 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-05-24 - 2023-06-06</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href="https://github.com/input-output-hk/fusion-flamingo" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5290" target="_blank" rel="noopener noreferrer">Update <code>cardano-cli</code> changelog</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5197" target="_blank" rel="noopener noreferrer">Propagate protocol parameters conversion errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5149" target="_blank" rel="noopener noreferrer">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/31" target="_blank" rel="noopener noreferrer">Switch to <code>tasty-discover</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/30" target="_blank" rel="noopener noreferrer">Move tests to standard locations</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/26" target="_blank" rel="noopener noreferrer">Make cardano-api:internal component public</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/24" target="_blank" rel="noopener noreferrer">update chaps index</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/18" target="_blank" rel="noopener noreferrer">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/17" target="_blank" rel="noopener noreferrer">Expose toAlonzoCostModels</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/9" target="_blank" rel="noopener noreferrer">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/32" target="_blank" rel="noopener noreferrer">Check changelog in tag script</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/34" target="_blank" rel="noopener noreferrer">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/38" target="_blank" rel="noopener noreferrer">Use .x suffix for release branches</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5291" target="_blank" rel="noopener noreferrer">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5284" target="_blank" rel="noopener noreferrer">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5243" target="_blank" rel="noopener noreferrer">update chaps &amp; integration</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5240" target="_blank" rel="noopener noreferrer">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/28"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/30"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-20-cip1694">Initial CIP 1694 Security Analysis and Responses</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-20T00:00:00.000Z" itemprop="datePublished">November 20, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule &quot;The Cardano network must always be able to produce new blocks&quot; - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a &#x27;guardrails document&#x27; in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cip-1694">cip1694</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/security">security</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed
+misleading errors regarding collect com transactions, resolved a security
+advisory (CVE-2023-42806), and simplified the Hydra Head protocol by using
+inline datums. The team also tackled minor inconsistencies in specifications and
+implementation, documented reasons for potentially dropped close transactions by
+the cardano-node, and collaborated with SundaeLabs on an offline mode for
+<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about
+incremental de-/commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href="https://github.com/input-output-hk/hydra/issues/839" target="_blank" rel="noopener noreferrer">#839</a></li><li>Addressed security advisory <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a> in PR <a href="https://github.com/input-output-hk/hydra/pull/1161" target="_blank" rel="noopener noreferrer">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href="https://github.com/input-output-hk/hydra/pull/1162" target="_blank" rel="noopener noreferrer">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href="https://github.com/input-output-hk/hydra/issues/1104" target="_blank" rel="noopener noreferrer">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href="https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A" target="_blank" rel="noopener noreferrer">open bugs</a></li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this scope</a></li><li>Update dependencies to prepare for Conway <a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-17-performance-and-tracing">Performance &amp; Tracing Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags
+and mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial
+we can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we&#x27;ve been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we&#x27;ve observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we&#x27;ve seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that
+there is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>
+service on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>For future benchmarks to be built around PlutusV3, we&#x27;ve equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes
+to the execution budgets by developing specialized workloads.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure
+performance for a long service run time, we&#x27;re currently equipping the service binary with the same capability to
+emit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,
+more detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables
+our team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.
+When alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-16-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-48">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22" target="_blank" rel="noopener noreferrer">sprint 48</a><a class="hash-link" href="#high-level-overview-of-sprint-48" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing bootstrap peers, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ioclasses--iosim">IOClasses / IOSim<a class="hash-link" href="#ioclasses--iosim" title="Direct link to heading">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.
+The recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href="https://github.com/input-output-hk/io-sim/pull/117" target="_blank" rel="noopener noreferrer">io-sim#117</a>.
+We released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href="https://github.com/input-output-hk/io-sim/pull/119" target="_blank" rel="noopener noreferrer">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href="https://github.com/input-output-hk/io-sim/pull/123" target="_blank" rel="noopener noreferrer">io-sim#123</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4707" target="_blank" rel="noopener noreferrer">ouroboros-network#4707</a>.
+We continued reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4625" target="_blank" rel="noopener noreferrer">ouroboros-network#4625</a> PR, which refactors
+<code>RootPeersDNS</code> module.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-15-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).
+This <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.
+However, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.
+On the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.
+Therefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/434" target="_blank" rel="noopener noreferrer">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href="https://github.com/jasagredo" target="_blank" rel="noopener noreferrer">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-19-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-19T00:00:00.000Z" itemprop="datePublished">May 19, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the &quot;Coding Standards&quot; for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href="https://github.com/input-output-hk/hydra/pull/863" target="_blank" rel="noopener noreferrer">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href="https://github.com/input-output-hk/hydra/pull/877" target="_blank" rel="noopener noreferrer">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href="https://github.com/input-output-hk/hydra/pull/867" target="_blank" rel="noopener noreferrer">#867</a>.</li><li>Updated our <a href="https://github.com/input-output-hk/hydra/wiki/Coding-Standards" target="_blank" rel="noopener noreferrer">Coding Standards</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing &quot;Option A&quot; <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Integrate spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/89" target="_blank" rel="noopener noreferrer">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it&#x27;s similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we&#x27;ve re-introduced the Genesis State Machine.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2318.0" target="_blank" rel="noopener noreferrer"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href="https://github.com/input-output-hk/mithril/issues/907" target="_blank" rel="noopener noreferrer">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href="https://github.com/input-output-hk/mithril/issues/869" target="_blank" rel="noopener noreferrer">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href="https://github.com/input-output-hk/mithril/issues/888" target="_blank" rel="noopener noreferrer">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href="https://github.com/input-output-hk/mithril/issues/893" target="_blank" rel="noopener noreferrer">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href="https://github.com/input-output-hk/mithril/issues/919" target="_blank" rel="noopener noreferrer">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we&#x27;re porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we&#x27;re busy with the handover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>&#x27;s default build environment is around the corner, we&#x27;re setting up our benchmarking cluster to
+handle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This
+also involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we&#x27;ve been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,
+we strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to
+be balanced against resource demand for all our cluster&#x27;s nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>For our new tracing system, we&#x27;re currently validating the behaviour of the system after optimizations have been applied. Furthermore, some
+quality-of-life details that have changed required us to revision the system documentation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis">Analysis<a class="hash-link" href="#analysis" title="Direct link to heading">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been
+normally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a
+huge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking
+copmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we&#x27;ve been adjusting
+those profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality
+of the nomad cloud backend.  </p><p>Additionally, we&#x27;re porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance--tracing-meetup">Performance &amp; Tracing Meetup<a class="hash-link" href="#performance--tracing-meetup" title="Direct link to heading">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive
+days together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.
+Also, it was a great opportunity to finally meet in person.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offboarding">Offboarding<a class="hash-link" href="#offboarding" title="Direct link to heading">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he&#x27;s handing over all his obligations, which requires reorganisation
+of team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream&#x27;s macros to merge these curves in halo2curves.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href="https://github.com/input-output-hk/cardano-base/pull/408" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href="https://github.com/input-output-hk/cardano-base/pull/405" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href="https://github.com/privacy-scaling-explorations/halo2curves/pull/38" target="_blank" rel="noopener noreferrer">#38</a></li><li>Addition constraint over JubJub merged <a href="https://github.com/input-output-hk/sidechains-zk/pull/10" target="_blank" rel="noopener noreferrer">#10</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/29"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/31"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023
+(<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon
+on 19th June 2023. The papers will be published in EPTCS.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release
+of the first mainnet compatible version. Besides this they also addressed
+inconsistencies in rollback handling, added an architecture page to the website,
+reducing the size of logs using event IDs. They also had productive discussions
+with researchers on plans for incremental commits/decommits and had a whiteboard
+session on DeFi and lending protocols. The goals for next week include
+completing the validation of the timed transactions feature, exploring stateless
+observation, refining the Hydra explorer ticket, writing ops instructions and
+troubleshooting, and implementing the first end-to-end journey for external
+commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released first mainnnet compatible version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Added <a href="https://hydra.family/head-protocol/core-concepts/architecture/" target="_blank" rel="noopener noreferrer">architecture page</a> and fixed haddock links on our website <a href="https://github.com/input-output-hk/hydra/pull/838" target="_blank" rel="noopener noreferrer">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href="https://github.com/input-output-hk/hydra/pull/859" target="_blank" rel="noopener noreferrer">#859</a></li><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-04" target="_blank" rel="noopener noreferrer">monthly report for April</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see
+below).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to
+Handshake contributed by Galois Inc.  We made improvements to our tests (fixed
+a flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and
+<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of
+releasing new package version to <code>CHaP</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers
+(currently operated by IOG, in future also CF and Emurgo).  We designed
+a switch to use ledger peers if the node tip is close enough to the current
+time.  For more details see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query
+server&#x27;s <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to
+Galois Inc. for implementing it, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4256" target="_blank" rel="noopener noreferrer">#4256</a> and <a href="https://github.com/input-output-hk/ouroboros-network/issues/4538" target="_blank" rel="noopener noreferrer">#4538</a>.  We published new version
+of packages to CHaP <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/253" target="_blank" rel="noopener noreferrer">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will
+not duplicate diffusion errors messages in the log, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4515" target="_blank" rel="noopener noreferrer">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4540" target="_blank" rel="noopener noreferrer">#4540</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4544" target="_blank" rel="noopener noreferrer">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we
+released all the package necessary to build the newest set of packages,
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn&#x27;t log
+<code>ExitSuccess</code> exceptions, <a href="https://github.com/input-output-hk/ouroboros-consensus/pulls/71" target="_blank" rel="noopener noreferrer">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4395" target="_blank" rel="noopener noreferrer">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">#4539</a>: we don&#x27;t need to install cryptographic libraries in CI;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4545" target="_blank" rel="noopener noreferrer">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved
+to a new repo;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4546" target="_blank" rel="noopener noreferrer">#4546</a>: we switched to use <a href="https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue" target="_blank" rel="noopener noreferrer">GitHub merge queues</a>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-05-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.
+For conway, we completed a large structural change that now allows
+for delegation certificates to be parameterized by era, and introducing
+new certificates for the first time since Shelley.
+We also continue to build out our contraint based generators that we will
+use to property test the conway era.
+In particular, we can now generate an entire ledger state and a
+transaction which is balanced with respect to the ledger state.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="conway-certificates">Conway certificates<a class="hash-link" href="#conway-certificates" title="Direct link to heading">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.
+Moreover, there are new certificates in the Conway era to support CIP-1694,
+and MIR certificates have been removed.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3387" target="_blank" rel="noopener noreferrer">pull-3387</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,
+but instead generate ledger states and transactions based on constraints.
+We hit a milestone this week, namely the ability to generate a balanced transaction in the context
+of a ledger state, all based on our ever growing constaint language.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3386" target="_blank" rel="noopener noreferrer">pull-3386</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3393" target="_blank" rel="noopener noreferrer">pull-3393</a> - Performance improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3395" target="_blank" rel="noopener noreferrer">pull-3395</a> - Conway instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3398" target="_blank" rel="noopener noreferrer">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3389" target="_blank" rel="noopener noreferrer">pull-3389</a> - Reduce github pages size</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3390" target="_blank" rel="noopener noreferrer">pull-3390</a> - Reinstate the tickf optimizations</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-05-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-05-05 - 2023-05-23</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5181" target="_blank" rel="noopener noreferrer">Update libsodium installation instructions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5264" target="_blank" rel="noopener noreferrer">Delete deprecated <code>shelley</code> command group</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5206" target="_blank" rel="noopener noreferrer">Add golden tests for CLI help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5201" target="_blank" rel="noopener noreferrer">Avoid bare IO in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5200" target="_blank" rel="noopener noreferrer">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5198" target="_blank" rel="noopener noreferrer">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5189" target="_blank" rel="noopener noreferrer">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5184" target="_blank" rel="noopener noreferrer">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5120" target="_blank" rel="noopener noreferrer">Simplify socket path code</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5221" target="_blank" rel="noopener noreferrer">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5218" target="_blank" rel="noopener noreferrer">Implement deposit handling when balancing transactions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5217" target="_blank" rel="noopener noreferrer">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5215" target="_blank" rel="noopener noreferrer">Cleanup socket file path code</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5207" target="_blank" rel="noopener noreferrer">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5194" target="_blank" rel="noopener noreferrer">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5191" target="_blank" rel="noopener noreferrer">Expose config reader</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5188" target="_blank" rel="noopener noreferrer">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5175" target="_blank" rel="noopener noreferrer">Fix <code>toEraInMode</code> for conway</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5168" target="_blank" rel="noopener noreferrer">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5096" target="_blank" rel="noopener noreferrer">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5047" target="_blank" rel="noopener noreferrer">Use cardano-api from separate repository</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4684" target="_blank" rel="noopener noreferrer">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5022" target="_blank" rel="noopener noreferrer">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5254" target="_blank" rel="noopener noreferrer">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5242" target="_blank" rel="noopener noreferrer">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5234" target="_blank" rel="noopener noreferrer">Fix cardano-testnet help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5211" target="_blank" rel="noopener noreferrer">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5165" target="_blank" rel="noopener noreferrer">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5128" target="_blank" rel="noopener noreferrer">Create defaultYamlValue for cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/30"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/32"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-04T00:00:00.000Z" itemprop="datePublished">May 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/870" target="_blank" rel="noopener noreferrer">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/852" target="_blank" rel="noopener noreferrer">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/871" target="_blank" rel="noopener noreferrer">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/853" target="_blank" rel="noopener noreferrer">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href="https://github.com/input-output-hk/mithril/issues/868" target="_blank" rel="noopener noreferrer">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href="https://github.com/input-output-hk/mithril/issues/878" target="_blank" rel="noopener noreferrer">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/643" target="_blank" rel="noopener noreferrer">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href="https://github.com/input-output-hk/mithril/issues/881" target="_blank" rel="noopener noreferrer">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href="https://github.com/input-output-hk/mithril/issues/873" target="_blank" rel="noopener noreferrer">#873</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-03-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.
+It seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this
+needs to be confirmed. We started a DoS mitigation handbook and updated our
+conceptual component diagram to guide the Genesis design. We engaged with the
+IOG researchers to work on the Limit on Patience attack vector, work in this
+area is still ongoing. We sketched a design to decouple the CPU load of the node
+from its responsiveness to the socket. Finally, we discussed with Networking our
+approach to lower the performance impact of the BlockFetch decision logic, and
+got green light from them.</p><p>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new
+repository</a>, splitting
+it from the <code>ouroboros-network</code> repository, and released version 0.6 of
+Consensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an
+explanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code
+comments that emphasize certain properties of the decisions the <code>BlockFetch</code>
+logic makes that are helping us confirm that Genesis does not require any
+changes to <code>BlockFetch</code>. We are waiting on input from our former system
+architect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>
+repository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a
+way to address the concern that the Limit on Patiente (LoP) attack vector duty
+cycle is indeed low, but it&#x27;s still non-trivial to ultimately conclude it&#x27;s
+sufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its
+responsiveness to the socket, since the LoP is a relatively tight timeout, and
+node performance bugs inducing seconds-worth of latency are unfortunately
+familiar phenomena.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/62" target="_blank" rel="noopener noreferrer">added an
+explanation</a> of
+a question that we had to explain many times about the exact behavior of the
+hardfork combinator forecast horizon.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-03-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,
+we created yet another local reproduction with the workbench&#x27;s <code>forge-stress</code> benchmark.  </p><p>Currently we&#x27;re working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and
+subsequent releases.  </p><p>Additionally, we&#x27;ve refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally
+intended to run on a performance-critical codepath. We&#x27;ve worked on improving those, as well as eliminating cases of redundant
+conversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dataflow-documentation">Dataflow documentation<a class="hash-link" href="#dataflow-documentation" title="Direct link to heading">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate
+further development, we&#x27;re creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="remove-redundant-plutus-flake-input">Remove redundant Plutus flake input<a class="hash-link" href="#remove-redundant-plutus-flake-input" title="Direct link to heading">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,
+we simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.
+This capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along
+with various quality-of-life improvements, has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-01-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-01T00:00:00.000Z" itemprop="datePublished">May 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1389" target="_blank" rel="noopener noreferrer">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1382" target="_blank" rel="noopener noreferrer">#1382</a></li><li>Using the cache in more places to reduce recourses usage
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1396" target="_blank" rel="noopener noreferrer">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1398" target="_blank" rel="noopener noreferrer">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto&#x27;s library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href="https://github.com/input-output-hk/cardano-base/pull/384" target="_blank" rel="noopener noreferrer">#384</a></li><li>Open PR for including test vectors created with <a href="https://github.com/zkcrypto/bls12_381" target="_blank" rel="noopener noreferrer">zkscrypto</a>&#x27;s library, <a href="https://github.com/input-output-hk/cardano-base/pull/397" target="_blank" rel="noopener noreferrer">PR#397</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href="https://github.com/input-output-hk/cardano-base/pull/388" target="_blank" rel="noopener noreferrer">PR#388</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE&#x27;s repo</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/31"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/33"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros
+Praos to a newer foundation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href="https://hackage.haskell.org/package/io-classes" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>,</li><li><a href="https://hackage.haskell.org/package/io-classes-mtl" target="_blank" rel="noopener noreferrer"><code>io-classes-mtl</code></a></li><li><a href="https://hackage.haskell.org/package/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-stm" target="_blank" rel="noopener noreferrer"><code>strict-stm</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-mvar" target="_blank" rel="noopener noreferrer"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href="https://engineering.iog.io/2023-04-14-io-sim-annoucement" target="_blank" rel="noopener noreferrer">blog post</a>.  We made progress
+also on another blog post which will describes the design of the P2P networking
+layer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made
+<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of
+<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros-Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4281" target="_blank" rel="noopener noreferrer">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4527" target="_blank" rel="noopener noreferrer">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4532" target="_blank" rel="noopener noreferrer">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>
+support), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</li><li>Renamed a module: <a href="https://github.com/input-output-hk/io-sim/pull/88" target="_blank" rel="noopener noreferrer">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/io-sim/pull/83" target="_blank" rel="noopener noreferrer">io-sim#83</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:
+<a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/227" target="_blank" rel="noopener noreferrer">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/29" target="_blank" rel="noopener noreferrer">typed-protocols#29</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-27T00:00:00.000Z" itemprop="datePublished">April 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the
+report which likely is published next week. They put the spec into the
+repository and website, addressed a user issue and fixed the TUI peer list.
+Furthermore, they updated dependencies, conducted a Twitter space on Auctions
+use cases, covered the rollback bug with tests and implemented a solution.
+Looking ahead, their goals for next week include releasing 0.10.0, implementing
+timed transactions support, writing a Query API ADR, and grooming work items
+like off-chain benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository
+<a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and published on
+<a href="https://hydra.family/head-protocol/unstable/core-concepts/specification" target="_blank" rel="noopener noreferrer">the
+website</a></li><li>Groom and addressed user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href="https://github.com/input-output-hk/hydra/issues/832" target="_blank" rel="noopener noreferrer">#832</a></li><li>Groom off-chain benchmarks idea <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state
+machine continuity on-chain, discussing voting project solutions, exploring
+adding Hydra support to kupo, and improving API navigation with a sidebar. The
+team also updated dependencies and fixed issues in their test suites. Moving
+forward, the team plans to hold the next monthly review meeting, address a user
+issue, prepare for the 0.10.0 release, and work on a dirt road fix for the
+rollbacks issue with proper test coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href="https://github.com/input-output-hk/hydra/pull/777" target="_blank" rel="noopener noreferrer">#777</a>.</li><li>Took part in a twitter space on <a href="https://twitter.com/thepizzaknight_/status/1647833904282320896" target="_blank" rel="noopener noreferrer">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href="https://hydra.family/head-protocol/unstable/api-reference/" target="_blank" rel="noopener noreferrer">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting (join via <a href="https://discord.gg/inputoutput?event=1097863746216538194" target="_blank" rel="noopener noreferrer">Discord</a> or <a href="https://www.addevent.com/event/ck16794110" target="_blank" rel="noopener noreferrer">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a>.</li><li>Put the spec into the repo <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and prepare release 0.10.0.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-21-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.
+In particular, the conway era now supports Plutus V3.
+Finally, we made small improvements to the ledger API and now host
+our Haskell code documentation (haddocks) on github pages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3365" target="_blank" rel="noopener noreferrer">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3368" target="_blank" rel="noopener noreferrer">pull-3368</a>] - Conway genesis fix.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3369" target="_blank" rel="noopener noreferrer">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3372" target="_blank" rel="noopener noreferrer">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3384" target="_blank" rel="noopener noreferrer">pull-3384</a>] - Rename.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haddocks-hosted-on-github-pages">Haddocks hosted on github pages<a class="hash-link" href="#haddocks-hosted-on-github-pages" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3385" target="_blank" rel="noopener noreferrer">pull-3385</a>] </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-improvements-to-the-api">Small improvements to the API<a class="hash-link" href="#small-improvements-to-the-api" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3366" target="_blank" rel="noopener noreferrer">pull-3366</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3367" target="_blank" rel="noopener noreferrer">pull-3367</a>] Fix cost model json instances.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3371" target="_blank" rel="noopener noreferrer">pull-3371</a>] UMap cleanup.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3373" target="_blank" rel="noopener noreferrer">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3375" target="_blank" rel="noopener noreferrer">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3377" target="_blank" rel="noopener noreferrer">pull-3377</a>] Fix cabal warnings.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3383" target="_blank" rel="noopener noreferrer">pull-3383</a>] Fix multi-asset test.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/32"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/34"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-20-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href="https://github.com/input-output-hk/mithril/issues/816" target="_blank" rel="noopener noreferrer">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href="https://github.com/input-output-hk/mithril/issues/814" target="_blank" rel="noopener noreferrer">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href="https://github.com/input-output-hk/mithril/issues/829" target="_blank" rel="noopener noreferrer">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href="https://github.com/input-output-hk/mithril/issues/847" target="_blank" rel="noopener noreferrer">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href="https://github.com/input-output-hk/mithril/issues/848" target="_blank" rel="noopener noreferrer">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-20-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-04-20 - 2023-05-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5136" target="_blank" rel="noopener noreferrer">Modify golden test functions to automatically create parent directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5132" target="_blank" rel="noopener noreferrer">SPO on-chain poll commands adjustments</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5119" target="_blank" rel="noopener noreferrer">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5172" target="_blank" rel="noopener noreferrer"><code>--out-file</code> option for governance commands</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5130" target="_blank" rel="noopener noreferrer">UTC Time to slots conversion function</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5157" target="_blank" rel="noopener noreferrer">Update CHaP to get latest ledger with performance fix</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4854" target="_blank" rel="noopener noreferrer">Integration with Peer Sharing</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-19-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism
+for UTxO-HD, and modifications to the mempool benchmarks that this prototype
+requires.</p><p>On the Genesis front we validated that the fragment size calculation in
+<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it
+we will get performance that is acceptably close to that of the baseline. We
+also started investigating a performance fix that does not alter the existing
+baseline behavior too much. In addition we reviewed our Genesis attack vector
+calculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving
+our release process, to support the Cardano-wide efforts in this area. We also
+performed an analysis on the number of file descriptors that consensus use. This
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-19-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We&#x27;re working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we&#x27;ve laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the
+<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial
+in locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of
+benchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still
+ongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we&#x27;re working with the implementation
+of data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational
+burden inside the node needs to be kept to an absolute minimum. We&#x27;re currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer
+feature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-manifest">Detailed manifest<a class="hash-link" href="#detailed-manifest" title="Direct link to heading">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.
+These dependencies come from different package sources, have different versioning policies, and an identical package version might provide different
+performance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated
+by making all component bumps visible and accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-profiling-inside-workbench">GHC profiling inside workbench<a class="hash-link" href="#ghc-profiling-inside-workbench" title="Direct link to heading">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of
+profiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already
+been merged to <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.
+This results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-17-ledger">Incident Report</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-17T00:00:00.000Z" itemprop="datePublished">April 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="incident-reporting-cardano-block-production-temporary-outage">Incident reporting: Cardano block production temporary outage<a class="hash-link" href="#incident-reporting-cardano-block-production-temporary-outage" title="Direct link to heading">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.
+The investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.
+Following successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.
+With the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="further-details">Further Details<a class="hash-link" href="#further-details" title="Direct link to heading">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href="https://www.314pool.com/post/cardano-post-mortem-1" target="_blank" rel="noopener noreferrer">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/33"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/35"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-14-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has submitted two papers for publication, carried
+out consultancy with other teams and has an opening for an intern.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer
+tooling, and improving the API for voting use cases. They reviewed progress on
+auction, payments, and voting projects and made worked on reproducing a bug with
+handling rollbacks. Moving forward, the team plans to update dependencies,
+implement a dirt road fix for the rollbacks bug, and explore adding Hydra
+support to kupo.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node
+used in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href="https://github.com/input-output-hk/hydra/pull/808" target="_blank" rel="noopener noreferrer">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href="https://github.com/input-output-hk/hydra/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-07-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-07T00:00:00.000Z" itemprop="datePublished">April 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published the monthly report for March, created
+separate links for different versions of documentation, and clarified potential
+solutions for the Rollbacks bug. The team also discussed Query API requests for
+the Hydra Voting project and met with community members to answer questions
+about Hydra. Moving forward, the team plans to integrate the specification into
+the repository, implement a short-term fix for the Rollbacks issue, and draft a
+Query API ADR.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published monthly reports on <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href="https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">released</a> vs. <a href="https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-06-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-06T00:00:00.000Z" itemprop="datePublished">April 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href="https://github.com/input-output-hk/mithril/issues/817" target="_blank" rel="noopener noreferrer">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href="https://github.com/input-output-hk/mithril/issues/827" target="_blank" rel="noopener noreferrer">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href="https://github.com/input-output-hk/mithril/issues/828" target="_blank" rel="noopener noreferrer">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/824" target="_blank" rel="noopener noreferrer">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href="https://github.com/input-output-hk/mithril/issues/843" target="_blank" rel="noopener noreferrer">#843</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are
+now working on improving the DB lock mechanism to improve performance. We also
+introduced several improvements to the file system abstraction and simulation
+layer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and
+<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,
+soliciting feedback from Networking Team and IOG Researchers. We also opened up
+a PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being
+reviewed.</p><p>On the support front, we got a new Consensus version that can use different
+fundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was
+discovered by our <code>QuickCheck</code> property tests.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/34"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/36"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-04-05 - 2023-04-19</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5112" target="_blank" rel="noopener noreferrer">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5061" target="_blank" rel="noopener noreferrer">Remove --stake-address option from stake-address build</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5059" target="_blank" rel="noopener noreferrer">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5053" target="_blank" rel="noopener noreferrer">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5046" target="_blank" rel="noopener noreferrer">Move parsers to reusable location</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --socket-path cli option</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5108" target="_blank" rel="noopener noreferrer">CIP-1694 make space for DRep certificates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5105" target="_blank" rel="noopener noreferrer">File type to track the content and direction of files</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5087" target="_blank" rel="noopener noreferrer">Fix import warning</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5086" target="_blank" rel="noopener noreferrer">Expose UsingRawBytes et al types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5085" target="_blank" rel="noopener noreferrer">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5072" target="_blank" rel="noopener noreferrer">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5071" target="_blank" rel="noopener noreferrer">New genCardanoKeyWitness function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5069" target="_blank" rel="noopener noreferrer">Replace roundtripCBOR with trippingCbor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5064" target="_blank" rel="noopener noreferrer">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5063" target="_blank" rel="noopener noreferrer">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5057" target="_blank" rel="noopener noreferrer">Define Functor instance for FileError</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5049" target="_blank" rel="noopener noreferrer">Split serialisation from IO</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5115" target="_blank" rel="noopener noreferrer">Master build failure fixes</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5106" target="_blank" rel="noopener noreferrer">Allow renamed fields to exist if values the same</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5091" target="_blank" rel="noopener noreferrer">workbench: updates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5084" target="_blank" rel="noopener noreferrer">Delete duplicate packages sort packages and imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5110" target="_blank" rel="noopener noreferrer">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5099" target="_blank" rel="noopener noreferrer">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5083" target="_blank" rel="noopener noreferrer">Ergonomic directory creation code in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5036" target="_blank" rel="noopener noreferrer">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">Integrate latest ledger dependencies</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We&#x27;re profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>
+helped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very
+detailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing
+the highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we&#x27;ve worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions
+for tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance
+analysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we&#x27;ve created a profile family for the workbench that&#x27;s specifically aimed at measuring and comparing tracing system configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-library">Plutus library<a class="hash-link" href="#plutus-library" title="Direct link to heading">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.
+This will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.
+It is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is
+being improved to minimize any friction for the backend user.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381&#x27;s PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch merged <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a" target="_blank" rel="noopener noreferrer">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f" target="_blank" rel="noopener noreferrer">JubJub</a> to our branch of halo2curves </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Minor reorg <a href="https://github.com/input-output-hk/musig2/pull/42" target="_blank" rel="noopener noreferrer">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">PR#</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final drafts of two papers
+for internal review and planning next steps of analysis of consensus
+design refiniments.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for
+distributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The
+semi-automated smoke tests and some missing documentation is still preventing
+from calling that fully done. They fixed smaller issues and made a step in the
+Head protocol more robust. Besides development, they met with interested people
+from the community who want to get started collaborating on communication and
+marketing materials.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href="https://github.com/input-output-hk/hydra/issues/560" target="_blank" rel="noopener noreferrer">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Completed configurable API feature <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/35"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/37"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We are still heavily involved in work related to preparing the next release.
+The other main thing we have worked on is experimentation about how we will
+handle the DRep stake distribution for CIP-1694 in the conway ledger era.
+Lastly, we merged a fix for
+<a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>
+into our main branch (there will be a post-mortem shortly).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support-for-the-next-release">Support for the next release<a class="hash-link" href="#support-for-the-next-release" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a> - Added helper functions for the CLI.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="experiments-for-drep-stake-distribution">Experiments for DRep stake distribution<a class="hash-link" href="#experiments-for-drep-stake-distribution" title="Direct link to heading">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.
+We would like to be able to use the current stake distribution at the epoch boundary
+for DRep voting so that people can always vote themselves in time for any proposal.
+To this end, we have a prototype of an incremental computation based on the incremental
+lambda calculus, together with tests and benchmarks (which are very promising).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate
+the new incremental computations.
+We have two draft PRs up for possibles solution.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-and-bug-fixes">Technical debt and bug fixes<a class="hash-link" href="#technical-debt-and-bug-fixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a> - A fix <a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a> - Removal of code duplication.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="documentation-changes">Documentation changes<a class="hash-link" href="#documentation-changes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a> - Rename &quot;optional datums&quot; with &quot;supplemental datums&quot; in the alonzo spec.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-27-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-27T00:00:00.000Z" itemprop="datePublished">March 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html" target="_blank" rel="noopener noreferrer">1.35.5</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html" target="_blank" rel="noopener noreferrer">1.35.6</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-24T00:00:00.000Z" itemprop="datePublished">March 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review
+meeting for March. They demonstrated a Hydra Head on mainnet, which was running
+the hydraw demo application. While this marks an important milestone, they also
+emphasized that more features are still to be added as needed for applications
+to run on Hydra. Besides this, the roadmap is getting cleaned up to encourage
+discussions and provide more space for user requests.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting <a href="https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392" target="_blank" rel="noopener noreferrer">slides</a>/<a href="https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c" target="_blank" rel="noopener noreferrer">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a> and investigated a potential bug in rollback handling <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-23-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on
+technical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an
+epoch, but also the first epoch of the last epoch.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1367" target="_blank" rel="noopener noreferrer">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn&#x27;t rollback and caused wrong values
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1370" target="_blank" rel="noopener noreferrer">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even
+though it was never used. Also refactored the no ledger part of the codebase.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1378" target="_blank" rel="noopener noreferrer">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or
+disables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync
+mainnet in hours.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1379" target="_blank" rel="noopener noreferrer">#1379</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-23-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2310.0" target="_blank" rel="noopener noreferrer"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the creation of a stake distribution service <a href="https://github.com/input-output-hk/mithril/issues/799" target="_blank" rel="noopener noreferrer">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href="https://github.com/input-output-hk/mithril/issues/810" target="_blank" rel="noopener noreferrer">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href="https://github.com/input-output-hk/mithril/issues/804" target="_blank" rel="noopener noreferrer">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href="https://github.com/input-output-hk/mithril/issues/807" target="_blank" rel="noopener noreferrer">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href="https://github.com/input-output-hk/mithril/issues/820" target="_blank" rel="noopener noreferrer">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href="https://github.com/input-output-hk/mithril/issues/801" target="_blank" rel="noopener noreferrer">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/803" target="_blank" rel="noopener noreferrer">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/818" target="_blank" rel="noopener noreferrer">#818</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD
+prototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>
+package, which provides a file-system abstraction layer that can be used for
+testing and simulation. This makes the Consensus code base smaller, while
+providing a package that the community can reuse and contribute to. We also
+fixed a failing property test related to iterators. We are also working on
+mempool and VRF improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-details">Low-level details<a class="hash-link" href="#low-level-details" title="Direct link to heading">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4425" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/1" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/2" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4460" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href="https://github.com/input-output-hk/fs-sim/pull/5" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/6" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/7" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/8" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/20" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/150" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-03-22 - 2023-04-05</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5041" target="_blank" rel="noopener noreferrer">Remove unused error constructors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5040" target="_blank" rel="noopener noreferrer">Remove use of AcquireFailure type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5038" target="_blank" rel="noopener noreferrer">Simplify implementation of executeQueryAnyMode</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5002" target="_blank" rel="noopener noreferrer">Script data serialisation</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4956" target="_blank" rel="noopener noreferrer">Guard against overflows in Shelley TxIns</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyContent and related types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5011" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test.</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we&#x27;re currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We&#x27;re working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we&#x27;re laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing">New tracing<a class="hash-link" href="#new-tracing" title="Direct link to heading">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe
+a slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-rts-parametrization">GHC RTS parametrization<a class="hash-link" href="#ghc-rts-parametrization" title="Direct link to heading">​</a></h3><p>We&#x27;re currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies
+on different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we&#x27;re refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we&#x27;re currently undertaking an effort to multi-layered documentation: a condensed version, as well
+as a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points
+for users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we&#x27;re laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will
+increase confidence in specific metrics.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis
+is patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We&#x27;re confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-21-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-21T00:00:00.000Z" itemprop="datePublished">March 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P
+functionality.</p><p>We received reports from some SPOs who encountered problems with their non
+P2P block producing nodes not being able to connect to their P2P relay.  Karl
+Knutsson (from Cardano Foundation) reproduced this issue between two nodes (a
+non P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed
+it and found a bug in the legacy non p2p code.  The bug is only possible to
+trigger with a P2P node which is binding its outbound connection port to
+a fixed IP address and port (default in p2p).  A possible solution was found.
+For more information see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4465" target="_blank" rel="noopener noreferrer">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no
+longer available as a standalone binary, but instead it will become part of
+<code>cardano-cli</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger
+peers to the outbound governor, implemented tests and fixed found issues
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>).  We also made the information if a given peer plays the role of
+a big ledger peer to the mini-protocols.  This will allow to modify
+mini-protocol applications for such peers.   As part of this functionality we
+refactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see
+<a href="https://github.com/input-output-hk/io-sim/pull/73" target="_blank" rel="noopener noreferrer">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in
+<code>cardano-node</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">#4902</a>).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381&#x27;s PR approved, only blocker is Windows&#x27; CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Merged <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch approved <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. Blocker is Windown&#x27;s CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href="https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md" target="_blank" rel="noopener noreferrer">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can&#x27;t use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it&#x27;s C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/37"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/39"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the
+hydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added
+some detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA
+per commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra
+Head on the Cardano mainnet, ideally just in time for the monthly review
+meeting. See the hydra channels on the IOG Technical Community discord server
+for details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node
+<a href="https://github.com/input-output-hk/hydra/pull/763" target="_blank" rel="noopener noreferrer">#763</a></li><li>Pay back funds to faucet after smoke-test run
+<a href="https://github.com/input-output-hk/hydra/pull/773" target="_blank" rel="noopener noreferrer">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet
+<a href="https://github.com/input-output-hk/hydra/pull/775" target="_blank" rel="noopener noreferrer">#775</a></li><li>Created golden tests to assure the script hash stays the same between
+changes <a href="https://github.com/input-output-hk/hydra/pull/772" target="_blank" rel="noopener noreferrer">#772</a></li><li>Removed hardcoded error codes in plutus scripts
+<a href="https://github.com/input-output-hk/hydra/pull/768" target="_blank" rel="noopener noreferrer">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state
+<a href="https://github.com/input-output-hk/hydra/pull/767" target="_blank" rel="noopener noreferrer">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made further progress on the conway ledger era.
+In particular, we expanded the ledger API significantly, including lots of governance features.
+We also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed
+technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-ledger-api">Expanded ledger API<a class="hash-link" href="#expanded-ledger-api" title="Direct link to heading">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-rules">Conway ledger rules<a class="hash-link" href="#conway-ledger-rules" title="Direct link to heading">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.
+Moreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="incremental-spodrep-stake-distribution-computation">Incremental SPO/DRep stake distribution computation<a class="hash-link" href="#incremental-spodrep-stake-distribution-computation" title="Direct link to heading">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus
+to maintain several of the stake distributions incrementally.
+For the per-SPO distribution, this is a performance improvement.
+For the (conway) per-DRep distribution, this is will allow those who have delegated their votes
+to a DRep to have time to react to any votes that they disapprove of.
+(Sorry, no code to share just yet, more to come.)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>Improved CBOR testing facilities <a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a></li><li>GitHub actions improvement <a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3323</a></li><li>Minor OCert improvements <a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a></li><li>Remove duplication <a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a> </li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-16-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-16T00:00:00.000Z" itemprop="datePublished">March 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers
+improving the deltaQ tutorial, consulting on performance design, and
+the final version of the Djed paper.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial
+improvement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation
+proofs for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-10T00:00:00.000Z" itemprop="datePublished">March 10, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a
+Hydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved
+the test suite of the <code>hydra-plutus</code> scripts. The specification is constantly
+getting improved upon reviewer feedback on overleaf - this week the graphical
+notation was refined to be more transaction-focused.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href="https://github.com/input-output-hk/hydra/issues/737" target="_blank" rel="noopener noreferrer">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href="https://github.com/input-output-hk/hydra/pull/715" target="_blank" rel="noopener noreferrer">#715</a></li><li>Improved our mutation test suite to all expected errors <a href="https://github.com/input-output-hk/hydra/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-09-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-09T00:00:00.000Z" itemprop="datePublished">March 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href="https://github.com/input-output-hk/mithril/issues/752" target="_blank" rel="noopener noreferrer">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href="https://github.com/input-output-hk/mithril/issues/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Worked on handling the API version with an era switch <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href="https://github.com/input-output-hk/mithril/issues/665" target="_blank" rel="noopener noreferrer">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href="https://github.com/input-output-hk/mithril/issues/769" target="_blank" rel="noopener noreferrer">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href="https://github.com/input-output-hk/mithril/issues/791" target="_blank" rel="noopener noreferrer">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/38"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/40"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the &#x27;release-mainnet&#x27; aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1343" target="_blank" rel="noopener noreferrer">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href="https://github.com/input-output-hk/mithril/issues/1235" target="_blank" rel="noopener noreferrer">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-14-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-14T00:00:00.000Z" itemprop="datePublished">November 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-11-01 - 2023-11-14</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/451" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (6/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/448" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (5/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/444" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/443" target="_blank" rel="noopener noreferrer">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/441" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/436" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/435" target="_blank" rel="noopener noreferrer">Update to <code>cardano-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/434" target="_blank" rel="noopener noreferrer">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/432" target="_blank" rel="noopener noreferrer">Release 8.14.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/430" target="_blank" rel="noopener noreferrer">Upgrade cardano-api to 8.30</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/428" target="_blank" rel="noopener noreferrer">Command types for <code>node</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/427" target="_blank" rel="noopener noreferrer">Split governance <code>MIRTransferConstructor</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/426" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/425" target="_blank" rel="noopener noreferrer">Command argument types for <code>drep</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/421" target="_blank" rel="noopener noreferrer">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/419" target="_blank" rel="noopener noreferrer">Command arguments types for stake-pool commands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/364" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/360" target="_blank" rel="noopener noreferrer">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/358" target="_blank" rel="noopener noreferrer">Protocol version change is not common to all versions anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/355" target="_blank" rel="noopener noreferrer">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/354" target="_blank" rel="noopener noreferrer">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/353" target="_blank" rel="noopener noreferrer">Modify foldBlocks to recurse on ledger events </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/352" target="_blank" rel="noopener noreferrer">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/351" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5525" target="_blank" rel="noopener noreferrer">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published
+the monthly report for October, providing updates on project developments. The
+team delivered a presentation and workshop at the Cardano Summit, contributing
+to community engagement. They implemented a \&quot;dirt road\&quot; solution for the
+\&quot;Ignored init tx\&quot; notification and moved the <code>hydra-poll</code> example project to a
+dedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool
+for Hydra Heads, updated the toolchain to GHC 9.6.3, and made various
+improvements to tooling and code formatting. They addressed specific issues,
+such as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the
+rewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test
+suite by fetching network configurations dynamically. Lastly, they actively
+reviewed pull requests and architectural decision records from the community,
+including contributions from SundaeSwap. An experiment, the Hydra tally, was
+completed and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Published the monthly <a href="https://hydra.family/head-protocol/monthly/2023-10" target="_blank" rel="noopener noreferrer">report for
+october</a></li><li>Given a presentation / workshop at the Cardano summit
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a> (without
+stateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a
+dedicated
+<a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling
+and code formatting
+<a href="https://github.com/input-output-hk/hydra/pull/1135" target="_blank" rel="noopener noreferrer">#1135</a><a href="https://github.com/input-output-hk/hydra/pull/1152" target="_blank" rel="noopener noreferrer">#1152</a><a href="https://github.com/input-output-hk/hydra/pull/1151" target="_blank" rel="noopener noreferrer">#1151</a><a href="https://github.com/input-output-hk/hydra/pull/1154" target="_blank" rel="noopener noreferrer">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing
+keys <a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Fetch network configurations instead of packaging them into
+hydra-cluster (smoke) test suite
+<a href="https://github.com/input-output-hk/hydra/pull/1156" target="_blank" rel="noopener noreferrer">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)
+<a href="https://github.com/input-output-hk/hydra/pull/1118" target="_blank" rel="noopener noreferrer">#1118</a><a href="https://github.com/input-output-hk/hydra/pull/1157" target="_blank" rel="noopener noreferrer">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor
+existing code towards more stateless observation</li><li>Start work on incremental decommits</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-10-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href="https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href="https://github.com/input-output-hk/cardano-parts/pull/18" target="_blank" rel="noopener noreferrer">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href="https://github.com/input-output-hk/cardano-parts/pull/19" target="_blank" rel="noopener noreferrer">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href="https://github.com/input-output-hk/cardano-parts/pull/21" target="_blank" rel="noopener noreferrer">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/5" target="_blank" rel="noopener noreferrer">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migration to play: <a href="https://github.com/input-output-hk/iohk-nix/pull/561" target="_blank" rel="noopener noreferrer">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-09-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix
+tags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.
+We have completed the initial implementation for the bootstrap instance objective.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1558" target="_blank" rel="noopener noreferrer">#1558</a></li><li>Fix of the committee key size
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1544" target="_blank" rel="noopener noreferrer">#1544</a></li><li>Workaround a ledger issue with unregistered pools
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1542" target="_blank" rel="noopener noreferrer">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1539" target="_blank" rel="noopener noreferrer">#1539</a></li><li>Rename offline to offchain
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1533" target="_blank" rel="noopener noreferrer">#1533</a></li><li>Transfer existing tests to Conway era
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1529" target="_blank" rel="noopener noreferrer">#1529</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1547" target="_blank" rel="noopener noreferrer">#1547</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD
+prototype, and introducing improvements to the <code>lmdb</code> related packages. In
+particular we identified an opportunity to gain performance by handling locks in
+a more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and
+Researchers caught. We also came op with a road map for not only testing the
+Genesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created
+component-level micro-benchmarks for adding transactions to the mempool. The
+results of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href="https://input-output-hk.github.io/ouroboros-consensus/" target="_blank" rel="noopener noreferrer">web
+page</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>
+repository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time
+GitHub actions take in <code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a
+result of the first round of sytem-level benchmarks, we identified an
+opportunity to optimise the way we handle locks to improve performance
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4393" target="_blank" rel="noopener noreferrer">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/19" target="_blank" rel="noopener noreferrer">New tests</a> for read-only transaction handles.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/18" target="_blank" rel="noopener noreferrer">New functions</a> and <a href="https://github.com/input-output-hk/lmdb-simple/pull/13" target="_blank" rel="noopener noreferrer">data types</a>.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/11" target="_blank" rel="noopener noreferrer">Updates</a> to support improved type safety and smaller constraints in
+the UTxO HD prototype.</li><li>Windows and MacOS <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">CI support</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in
+the Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early
+milestones that are applicable to today&#x27;s master branch, ie tests that are
+useful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for
+the Honest leader schedule and one as-aggressive-as-possible Adversarial
+leader schedule that together satisfy the Praos properties that the Consensus
+design takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves
+differently in the baseline compared to the prototype, and we are close to
+having a full picture of how the Consensus components interact during bulk sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4400" target="_blank" rel="noopener noreferrer">created</a> component-level micro-benchmarks for adding transactions
+to the mempool. We plan on extending this to more mempool actions and different
+types of blocks. We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4422" target="_blank" rel="noopener noreferrer">store</a> the benchmark data to make it available
+to the GitHub action that <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/12" target="_blank" rel="noopener noreferrer">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4429" target="_blank" rel="noopener noreferrer">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4423" target="_blank" rel="noopener noreferrer">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus
+packages.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We finished moving the Consensus documentation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4374" target="_blank" rel="noopener noreferrer">from</a>
+<code>ouroboros-network</code> <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">to</a> <code>ouroboros-consensus</code>, in preparation for
+migrating the code to the latter repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4412" target="_blank" rel="noopener noreferrer">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4421" target="_blank" rel="noopener noreferrer">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,
+thereby reducing the time CI jobs take.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-03-08 - 2023-03-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes and some refactoring </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4958" target="_blank" rel="noopener noreferrer">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5003" target="_blank" rel="noopener noreferrer">Add missing imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5001" target="_blank" rel="noopener noreferrer">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4967" target="_blank" rel="noopener noreferrer">Remove unnecessary functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4953" target="_blank" rel="noopener noreferrer">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4686" target="_blank" rel="noopener noreferrer">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4683" target="_blank" rel="noopener noreferrer">Derive Eq instance for AcquiringFailure</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4682" target="_blank" rel="noopener noreferrer">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4344" target="_blank" rel="noopener noreferrer">Remove unnecessary validation of Data</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3775" target="_blank" rel="noopener noreferrer">Remove hint of &quot;string&quot; support for ScriptData</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4988" target="_blank" rel="noopener noreferrer">Conway hard forks on prot-ver 9</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4968" target="_blank" rel="noopener noreferrer">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4921" target="_blank" rel="noopener noreferrer">Take all dependencies from Hackage or CHaP</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4729" target="_blank" rel="noopener noreferrer">fix cardano-testnet Babbage genesis.json</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis-pipeline">Analysis pipeline<a class="hash-link" href="#analysis-pipeline" title="Direct link to heading">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better
+differentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.
+Additionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking
+data more easily accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we&#x27;re currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we&#x27;ve begun working on a small visualization demo and interactive API documentation. Those will enable
+third parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make
+the switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Bumped to version <a href="https://crates.io/crates/kes-summed-ed25519/0.2.0" target="_blank" rel="noopener noreferrer">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href="https://github.com/input-output-hk/mithril/pull/773" target="_blank" rel="noopener noreferrer">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href="https://github.com/input-output-hk/mithril/pull/774" target="_blank" rel="noopener noreferrer">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. 	</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, improving the deltaQ tutorial, consulting on
+performance design, and the Djed paper has been accepted for
+publication.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ
+tutorial based on experience with systems that manage risk at
+multiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency
+laws for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>&quot;Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin
+Protocol&quot; has been accepted for publication at IEEE ICBC 2023</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/39"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/41"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version
+<a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a> - a version
+of the <code>hydra-node</code> with fully specified behavior of on-chain scripts and
+off-chain head-logic, decreased costs for opening/closing a Head and scalable
+contestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">monthly
+report</a> of the Hydra project
+and conducted a review meeting with an increasingly wider audience. The team
+plans to extend invitations through the new Hydra
+<a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> discord channel for the next
+months, stay tuned!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with report published <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">on website</a></li><li>Fixed smoke tests <a href="https://github.com/input-output-hk/hydra/pull/726" target="_blank" rel="noopener noreferrer">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href="https://github.com/input-output-hk/hydra/pull/748" target="_blank" rel="noopener noreferrer">#748</a> + head reference script <a href="https://github.com/input-output-hk/hydra/pull/701" target="_blank" rel="noopener noreferrer">#701</a>)</li><li>Released version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li><li>New discord category with <a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href="https://github.com/orgs/input-output-hk/projects/21/views/26" target="_blank" rel="noopener noreferrer">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger
+work into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-rules">Conway rules<a class="hash-link" href="#conway-rules" title="Direct link to heading">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec
+with respect to the ratification and enactment logic.</p><p>See the notes in <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a> for more details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing
+support for the main ledger properties.
+The new constraint based generators can now generate full ledger states with what is probably
+very close to the real constraints (if anything, it is under constrained).
+Next we will work on generating a transaction in the context of a ledger state, which would allow
+us to actually start using these generators for real tests.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="preparing-a-release-now-with-proper-versioning">Preparing a release, now with proper versioning<a class="hash-link" href="#preparing-a-release-now-with-proper-versioning" title="Direct link to heading">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new
+version of consensus, using CHaPs.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are
+lexicographically ordered in the Plutus script context. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation
+(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>.</li><li>We improved our nightly tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-02-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-02T00:00:00.000Z" itemprop="datePublished">March 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing
+forward implementation of eclipse evasion.  We also found a bug in our
+simulation testing setup (in integration of test node).  We also overviewed the
+work on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and
+<code>ouroboros-network-protocols-0.3.0.0</code> to <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/147" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to
+configure inbound connection limits, see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it&#x27;s
+validation of DNS names, IP address &amp; ports when registering a stake pool
+should be more strict to protect against common mistakes which we identified on
+the chain.  See <a href="https://github.com/input-output-hk/cardano-node/issues/4929" target="_blank" rel="noopener noreferrer">issue #4929</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-work-log">Detailed work log<a class="hash-link" href="#detailed-work-log" title="Direct link to heading">​</a></h2><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> we fixed two bugs in peer state actions.  First one results in
+a busy loop if demotion from hot to warm times outs.  This busy loop is
+eventually exited when mux exits (we reported this in our previous report).
+This fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm
+-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixed a bug in a node only used in simulation which
+resulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the
+review process, we realised that the header-body split in the simulated node
+requires further work (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a>, which is under review).</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also extend our generators, which together with the above fix,
+cover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays
+similar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across
+simulated restarts) store of blocks which does chain selection.  This ensures
+that the simulated node is using <code>block-fetch</code> to download blocks announced by
+<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">PR #4019</a> - peer sharing.</p><p>We also fixed <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue #4370</a> - a connection manager test failure, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4384" target="_blank" rel="noopener noreferrer">PR #4384</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-24T00:00:00.000Z" itemprop="datePublished">February 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the
+implementation with the specification. More over, they have groomed a plan to
+make Hydra Mainnet compatible. Also, they continue moving forward with the
+internal auditing and have published some auditing guidelines to receive
+contributions from the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> (what is
+remaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec
+<a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> and drafted a
+0.10.0 version</li><li>Added a tutorial by <a href="https://github.com/perturbing/" target="_blank" rel="noopener noreferrer">@perturbing</a> to the
+website <a href="https://hydra.family/head-protocol/docs/tutorial/" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Published auditing guidelines
+<a href="https://hydra.family/head-protocol/audit-guidelines" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Made hydra-node work for macos
+<a href="https://github.com/input-output-hk/hydra/issues/746" target="_blank" rel="noopener noreferrer">#746</a> and added support
+for building on aarch64
+<a href="https://github.com/input-output-hk/hydra/issues/673" target="_blank" rel="noopener noreferrer">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-23-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href="https://github.com/input-output-hk/mithril/issues/718" target="_blank" rel="noopener noreferrer">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href="https://github.com/input-output-hk/mithril/issues/738" target="_blank" rel="noopener noreferrer">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href="https://github.com/input-output-hk/mithril/issues/740" target="_blank" rel="noopener noreferrer">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href="https://github.com/input-output-hk/mithril/issues/741" target="_blank" rel="noopener noreferrer">#741</a></li><li>Completed the creation of the signer registration event <a href="https://github.com/input-output-hk/mithril/issues/742" target="_blank" rel="noopener noreferrer">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href="https://github.com/input-output-hk/mithril/issues/743" target="_blank" rel="noopener noreferrer">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href="https://github.com/input-output-hk/mithril/issues/732" target="_blank" rel="noopener noreferrer">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/755" target="_blank" rel="noopener noreferrer">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href="https://github.com/input-output-hk/mithril/issues/760" target="_blank" rel="noopener noreferrer">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href="https://github.com/input-output-hk/mithril/issues/757" target="_blank" rel="noopener noreferrer">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/730" target="_blank" rel="noopener noreferrer">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href="https://github.com/input-output-hk/mithril/issues/765" target="_blank" rel="noopener noreferrer">#765</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/40"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/42"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-23-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp">SECP<a class="hash-link" href="#secp" title="Direct link to heading">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We&#x27;re currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system&#x27;s introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We&#x27;re currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nixops-backend">NixOps backend<a class="hash-link" href="#nixops-backend" title="Direct link to heading">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-22-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks
+for UTxO HD. They showed a substantial performance regression, so we spent some
+time analyzing the results. We found out the frequency at which ledger snapshots
+were taken was too high, so we requested the benchmarking team a new run with a
+more realistic snapshotting policy. We continued refactoring and improving the
+prototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis
+design, which was well received. We continued working on testing and
+benchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work
+derived in several improvements such as better documentation, a framework for
+writing unit (and regression) tests, and the possibility of debugging
+<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and
+<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed
+to indicate a significant regression in performance. After looking into the
+benchmark logs we found that the benchmark runs took ledger state snapshots too
+often, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so
+small in the benchmark runs. Therefore, the next step is to re-run the
+benchmarks with a snapshotting policy that more closely resembles the one from
+mainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,
+<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and
+<code>cardano-lmdb-simple</code>) to <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from
+NSol. It was well received. They pointed out one blindspot, but we think it&#x27;ll
+be relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis
+prototypes. I particular we tested and implemented a potential fix for
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022" target="_blank" rel="noopener noreferrer">increased ChainDB dequeue timings</a>, which partly
+behaved as we expected, but still needs further investigation. Also we obtained
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031" target="_blank" rel="noopener noreferrer">new benchmarking data</a> for the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Related to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>, we developed a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4379" target="_blank" rel="noopener noreferrer">DSL</a> for specifying
+<code>ChainDB</code> unit tests. This will allow us to better understand the
+counter-examples returned by QuickCheck tests, and to write <a href="https://github.com/input-output-hk/ouroboros-network/pull/4383" target="_blank" rel="noopener noreferrer">regression
+tests</a> for them. Also, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4358" target="_blank" rel="noopener noreferrer">added a module</a> to enable
+QuickCheck counter-examples to be run on the REPL, allowing for faster debugging
+feedback. Also, we improved the documentation related to followers
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4372" target="_blank" rel="noopener noreferrer">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the
+future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>
+0.3.0.0 to CHaP. Remember that we decided to split the packages related to
+Consensus into two bundles, one with the core functionality, Cardano-agnostic
+code, and another bundle with instantiations specific to Cardano.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-22-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-02-22 - 2023-03-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4882" target="_blank" rel="noopener noreferrer">Fix some markdown links</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4881" target="_blank" rel="noopener noreferrer">Update changelog with PR4788 changes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4901" target="_blank" rel="noopener noreferrer">Remove pattern Tx</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4949" target="_blank" rel="noopener noreferrer">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4932" target="_blank" rel="noopener noreferrer">New build complete job</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4764" target="_blank" rel="noopener noreferrer">Update ouroboros-network</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --node-socket-path cli option</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4823" target="_blank" rel="noopener noreferrer">Straight line code for tx commands</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4655" target="_blank" rel="noopener noreferrer">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyConŻtent and related types</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4825" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops 2</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3783" target="_blank" rel="noopener noreferrer">Transaction debug script command</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-21-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-21T00:00:00.000Z" itemprop="datePublished">February 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.
+We also investigated and had the first working UTxO-HD integration which is one
+of the potential future risks for db-sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn&#x27;t
+use the full on disk storage but keeps things in memory and the plan is to keep
+it this way for the first iteration. The integration still has some performance
+issues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1353" target="_blank" rel="noopener noreferrer">#1353</a></li><li>Continued with ghc-9.2 integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1339" target="_blank" rel="noopener noreferrer">#1339</a></li><li>Worked on an new fixing procedure for
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1348" target="_blank" rel="noopener noreferrer">#1348</a>.
+We try to make these procedures work also on older schema version, without the
+need to migrate to newer schema, which can be very useful for fixing existing
+snapshots.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril&#x27;s core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/41"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/43"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, distributivity properties of deltaQ, and consulting
+on performance design with the Marlowe team.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning
+paper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for
+draft paper about verifying design refinements for distributed
+system design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests
+during the contestation period. These will now always push out the deadline and
+hence contestation periods are easier to pick (depending on the network a Head
+runs on). Furthermore, they added an important acceptance test and completed
+internal refactoring of the protocol logic making future changes easier.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Push contestation deadline on each contest <a href="https://github.com/input-output-hk/hydra/pull/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> into dedicated features</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete full minting policy <a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>
+and <code>ouroboros-network</code> repositories.
+The vast majority of the effort involved all the changes to the ledger serialization libraries
+(and the interplay with <code>cardano-base</code>) which now support proper versioning.
+Supporting the conway ledger era, and in particular allowing the ledger state to transition
+to a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the
+documentation, make our testing infrastructure better (such as experimenting with better
+nightly tests), and formally specifying more parts of CIP-1694.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from
+the current ledger master. Many thanks to
+<a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer">Alexey</a> for this colossal undertaking!</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted
+in the CBOR specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by
+<code>cabal format</code> in our CI. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running
+property based tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-documentation-improvements">Small documentation improvements<a class="hash-link" href="#small-documentation-improvements" title="Direct link to heading">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the
+Shelley ledger specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="specifying-cip-1694">Specifying CIP-1694<a class="hash-link" href="#specifying-cip-1694" title="Direct link to heading">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!
+Upgrading to Agda 2.6.3 fixed our main build infrastructure problems,
+and we no longer have to rely on our custom fork. See <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/50" target="_blank" rel="noopener noreferrer">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/40" target="_blank" rel="noopener noreferrer">pull-40</a></li><li>the corresponding Haskell: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h3><p>We are still actively working on our new constraint based property testing framework.
+We have nearly all of the constraints for an entire ledger state
+hooked into generators, and tests that the generators do indeed obey the constraints.
+The variable count in the constraints is over 100!
+There is still much work to do on shrinking, making the generators faster,
+and writing actual property tests for the ledger, but the approach still seems viable and
+we are hopeful that it could replace our trace generators.
+The WIP can be followed here: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one
+fix to <code>1.35.6</code> release, another one will likely be part of next release.  The
+first one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These
+bugs could only affect nodes which are out of sync and thus should not impose
+risk on well maintained nodes on mainnet.  We also advertise to deploy at most
+one of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started
+implementing it (see <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205" target="_blank" rel="noopener noreferrer">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query
+network protocol versions (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with
+<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">* monoidal-synchronisation-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* cardano-client-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* network-mux-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-api-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-testing-0.2.0.1</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-mock-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-framework-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-0.4.0.0 (it doesn&#x27;t not yet include the fix we included</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  in `0.3.0.1`)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-10T00:00:00.000Z" itemprop="datePublished">February 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts
+implementation further with the specification. This also resulted in a slight
+improvement on Hydra script size and costs. They consequently analysed the
+asymptotic complexity of collect and fanout and how they relate. Also plutus-tx
+profiling toolchain was evaluated and set up for future improvements on Hydra
+on-chain performance. In discussions with researchers and internal auditors,
+they also uncovered next steps on further securing the Head protocl using a
+&quot;full&quot; minting policy.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a><ul><li>Allow contest only once <a href="https://github.com/input-output-hk/hydra/pull/680" target="_blank" rel="noopener noreferrer">#680</a></li><li>Optimization through head output at index 0 <a href="https://github.com/input-output-hk/hydra/pull/700" target="_blank" rel="noopener noreferrer">#700</a></li><li>Value is preserved <a href="https://github.com/input-output-hk/hydra/pull/702" target="_blank" rel="noopener noreferrer">#702</a> + optimized exact value equality <a href="https://github.com/input-output-hk/hydra/pull/709" target="_blank" rel="noopener noreferrer">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href="https://github.com/input-output-hk/hydra/pull/721" target="_blank" rel="noopener noreferrer">#721</a><img loading="lazy" src="https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png" class="img_ev3q"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">this</a> idea ticket and <a href="https://github.com/input-output-hk/hydra/milestone/8" target="_blank" rel="noopener noreferrer">milestone</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/42"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/44"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-09-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-09T00:00:00.000Z" itemprop="datePublished">February 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level
+benchmarks. We have created a new repository that contains the <code>anti-diff</code>
+packages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to
+audit the implementation design, and we continued working on basic tests and
+simplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR
+encoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for
+the system level benchmarks to confirm if the performance of the prototype is
+satisfactory.</p><p>We also set up a repository for the <a href="https://github.com/input-output-hk/anti-diffs" target="_blank" rel="noopener noreferrer"><code>anti-diff</code></a> package, which
+required us to refactor the code, write documentation, and prepare a release to
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4347" target="_blank" rel="noopener noreferrer">basic tests</a> for the <em>Limit on Eagerness</em> property of
+Genesis. We also introduced further robustness and simplifications in the
+Genesis Density governor. Finally, we developed a presentation to engage again
+with the researchers on our Genesis implementation design.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We are in the process of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/6" target="_blank" rel="noopener noreferrer">polishing</a> the <code>ouroboros-consensus</code>
+documentation site, which we will use a the entry point for Consensus related
+documentation. The first version will not be complete, but we plan on
+systematically improving it.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4335" target="_blank" rel="noopener noreferrer">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows
+to dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href="https://github.com/input-output-hk/ouroboros-network/pull/4339" target="_blank" rel="noopener noreferrer">another tool</a> that serves an existing immutable DB via
+BlockFetch and ChainSync. This tool can help in assisting our local benchmarking
+efforts (for instance Genesis&#x27; ChainSync jumping prototype).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-02-08 - 2023-02-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4889" target="_blank" rel="noopener noreferrer">Remove use of multiline literals</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4775" target="_blank" rel="noopener noreferrer">Markdown links CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Date ranges for copyright</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4894" target="_blank" rel="noopener noreferrer">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4885" target="_blank" rel="noopener noreferrer">Disallow empty cost model for create update proposal</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4815" target="_blank" rel="noopener noreferrer">Refactor code using onLeft and onNothing</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4876" target="_blank" rel="noopener noreferrer">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we&#x27;re currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we&#x27;ve performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we&#x27;re performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we&#x27;re redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>A rework of the new tracing system&#x27;s internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we&#x27;ll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril&#x27;s core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used &#x27;as-a-service&#x27;. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it&#x27;s trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a> is finally merged, and we are ready to merge <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><p>The GitHub Action <a href="https://github.com/fernandrone/linelint" target="_blank" rel="noopener noreferrer">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/43"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/45"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been preparing several papers for peer review
+and knowledge sharing and consulting within IO and the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC
+2023 conference</li><li>Finished preparing and submitted a paper on performance engineering
+to an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design
+refinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about
+rollbacks and updated graphs
+(<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>). In a next step,
+the specification will be made more approachable and an open standard. They
+improved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox
+environment and continued aligning the <code>hydra-plutus</code> scripts with the
+specification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs
+<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href="https://github.com/input-output-hk/hydra/pull/677" target="_blank" rel="noopener noreferrer">#677</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-02-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-02T00:00:00.000Z" itemprop="datePublished">February 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Much of the work the past two weeks involved integration efforts,
+cleaning up and debugging some serialization issues,
+adding tests, and work on large projects that are still ongoing.
+We also released a CIP this week that aims to make the ledger
+a registered CIP category.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-evolution-cip">Ledger evolution CIP<a class="hash-link" href="#ledger-evolution-cip" title="Direct link to heading">​</a></h3><p>We published a
+<a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP</a>
+that will make the Cardano ledger a registered category of the CIP process.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="serialization-issues">Serialization issues<a class="hash-link" href="#serialization-issues" title="Direct link to heading">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,
+but it turned out to just be particularly confusing code.
+We have now clarified the issue for the future.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tests">New tests<a class="hash-link" href="#new-tests" title="Direct link to heading">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-a-better-cost-model-serialization-situation">Progress on a better cost model serialization situation.<a class="hash-link" href="#progress-on-a-better-cost-model-serialization-situation" title="Direct link to heading">​</a></h3><p>We are still working our way through <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+Towards this end, we are now properly gating the new flexible encoders
+until version 9.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nightly-tests">Nightly tests<a class="hash-link" href="#nightly-tests" title="Direct link to heading">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.
+See the previous ledger update for more information about this project.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-27T00:00:00.000Z" itemprop="datePublished">January 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,
+contributors and interested people from the community. The monthly repot for
+<a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a> is a digest
+of the things presented and also includes a summary of the meeting. The Hydra
+specification was getting discussed and the team is incorporating suggested
+changes of reviewers. Last but not least, they compute and publish script
+information on every PR and also on the
+<a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a>
+now.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-26-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-26T00:00:00.000Z" itemprop="datePublished">January 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href="https://github.com/input-output-hk/mithril/issues/688" target="_blank" rel="noopener noreferrer">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href="https://github.com/input-output-hk/mithril/issues/689" target="_blank" rel="noopener noreferrer">#689</a></li><li>Implement the mechanism for the signature registration <a href="https://github.com/input-output-hk/mithril/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Implement the mechanism for epoch settings <a href="https://github.com/input-output-hk/mithril/issues/695" target="_blank" rel="noopener noreferrer">#695</a></li><li>Implement the mechanism for certificate pending <a href="https://github.com/input-output-hk/mithril/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Implement the mechanism for certificate <a href="https://github.com/input-output-hk/mithril/issues/697" target="_blank" rel="noopener noreferrer">#697</a></li><li>Implement the mechanism for snapshots list <a href="https://github.com/input-output-hk/mithril/issues/698" target="_blank" rel="noopener noreferrer">#698</a></li><li>Implement the mechanism for snapshot <a href="https://github.com/input-output-hk/mithril/issues/699" target="_blank" rel="noopener noreferrer">#699</a></li><li>Update enforcement of API version with Semver <a href="https://github.com/input-output-hk/mithril/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/44"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/46"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-25-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities
+around the UTxO-HD prototype. This is a very important milestone which will
+enable us to run system-level tests and benchmarks, as well as start refactoring
+and cleaning the prototype. Regarding our Genesis workstream, we elaborated a
+roadmap that gives an indication of the remaining work. We also continued our
+work on benchmarking chain-sync-jumping. We also continued working on improving
+the way we handle blocks from the future, and advancing the integration of the
+new VRF and KES crypto.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough
+confidence that we will be able to move additional parts of the ledger state
+onto disk. We worked together with the Ledger team to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4296" target="_blank" rel="noopener noreferrer">elaborate a
+sketch</a> on how the UTxO-HD design would accommodate the migration of
+additional data from memory to disk. This gave us enough confidence that the
+current architecture will be extensible in the future.</p><p>On the testing front, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4274" target="_blank" rel="noopener noreferrer">added</a> property-based tests for the UTxO-HD
+type classes. </p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/issues/4289" target="_blank" rel="noopener noreferrer">enabled disabled components</a>, and addressed several
+technical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4269" target="_blank" rel="noopener noreferrer">#4269</a>), and integrate it
+into consensus (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4273" target="_blank" rel="noopener noreferrer">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/7" target="_blank" rel="noopener noreferrer">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We
+found a race condition in the LMDB backing store, which <a href="https://github.com/input-output-hk/ouroboros-network/pull/4283" target="_blank" rel="noopener noreferrer">we fixed</a>.
+After the fix we were able to successfully run these benchmarks. The results
+were published by <a href="https://github.com/input-output-hk/ouroboros-network/pull/4295" target="_blank" rel="noopener noreferrer">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and
+flushing values to disk. The following plot shows the duration of these disk
+operation in relation to the main ledger operations, where we can see that the
+cost of the former are comparatively low. The spike at the beginning of the
+graph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed
+to disk.</p><p><img loading="lazy" alt="UTxO-HD read and flush benchmarks" src="/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png" width="1600" height="800" class="img_ev3q"></p><p>After months of hard work adding tests for the prototype, we are ready to run
+end-to-end tests on the node, and system level benchmarks. This signals a very
+important milestone for the UTxO-HD workstream 🎉.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We elaborated a <a href="https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md" target="_blank" rel="noopener noreferrer">high-level decomposition</a> of the remaining
+work for Genesis. We also continued benchmarking the chain-sync-jumping
+happy-path.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.
+<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href="https://github.com/input-output-hk/cardano-ledger/pull/3262" target="_blank" rel="noopener noreferrer">pull
+request</a> to facilitate compiling consensus.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-25-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-01-25 - 2023-02-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4853" target="_blank" rel="noopener noreferrer">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4848" target="_blank" rel="noopener noreferrer">Remove hlint from nix required CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4838" target="_blank" rel="noopener noreferrer">Remove reconfigure-hlint.sh script</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4837" target="_blank" rel="noopener noreferrer">Fix hlint warnings</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4833" target="_blank" rel="noopener noreferrer">Implement ADR-2: Restructure modules for generators</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4803" target="_blank" rel="noopener noreferrer">Stylish Haskell in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4802" target="_blank" rel="noopener noreferrer">Revert skip doc in ci</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4800" target="_blank" rel="noopener noreferrer">Skip CI on doc only changes</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4792" target="_blank" rel="noopener noreferrer">Skip CI if only changes are documentation</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4776" target="_blank" rel="noopener noreferrer">Build all of cardano-node in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4766" target="_blank" rel="noopener noreferrer">Check cabal files in CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4785" target="_blank" rel="noopener noreferrer">Straight line error handling</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4787" target="_blank" rel="noopener noreferrer">New NodeToClientVersionOf typeclass</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4832" target="_blank" rel="noopener noreferrer">Remove NoImplicitPrelude from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4809" target="_blank" rel="noopener noreferrer">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4808" target="_blank" rel="noopener noreferrer">Use hoistMaybe</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4788" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4805" target="_blank" rel="noopener noreferrer">New query stake-snapshot integration test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4671" target="_blank" rel="noopener noreferrer">Make leadership-schedule test less flaky</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href="https://github.com/input-output-hk/mithril/pull/675" target="_blank" rel="noopener noreferrer">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>Plutus team ran <a href="https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs" target="_blank" rel="noopener noreferrer">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we&#x27;ll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There&#x27;s been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href="https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">doing the change</a>, but still the CI is not happy.</li><li>The <a href="https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">same</a> was needed for the KES agents prerequisites <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">PR#317</a>.</li><li>We&#x27;ve started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1
+specification. Of which a first version has been aggregated and is currently
+under review. They aligned the on-chain scripts of reimbursing funds on abort
+like defined in the specification, improved the mutation test framework to have
+more control when testing plutus scripts. The added HeadId in the API and the
+TUI example client make <code>hydra-node</code> easier to use and a first experiment of a
+Hydra Head explorer was showing the utility of this - see what Heads exist on
+the <code>preview</code> network <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>HeadId to API and display in the TUI <a href="https://github.com/input-output-hk/hydra/pull/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href="https://github.com/input-output-hk/hydra/pull/679" target="_blank" rel="noopener noreferrer">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href="https://github.com/input-output-hk/hydra/pull/670" target="_blank" rel="noopener noreferrer">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href="https://www.overleaf.com/read/bbqzmptcxryj" target="_blank" rel="noopener noreferrer">Read it on overleaf</a> (<a href="https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md" target="_blank" rel="noopener noreferrer">Communication channels</a> for feedback)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/45"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/47"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing
+support for cardano-world.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tullia">Tullia<a class="hash-link" href="#tullia" title="Direct link to heading">​</a></h3><ul><li>Made it easier to support cloning from a PR&#x27;s fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href="https://github.com/hashicorp/nomad/issues/12877" target="_blank" rel="noopener noreferrer">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href="https://colmena.cli.rs" target="_blank" rel="noopener noreferrer">Colmena</a> for deploys instead of <a href="https://github.com/serokell/deploy-rs" target="_blank" rel="noopener noreferrer">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href="https://github.com/yaxitech/ragenix" target="_blank" rel="noopener noreferrer">ragenix</a> instead of <a href="https://github.com/Mic92/sops-nix" target="_blank" rel="noopener noreferrer">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-world">bitte-world<a class="hash-link" href="#bitte-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-19-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-19T00:00:00.000Z" itemprop="datePublished">January 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694
+(restructuring the ledger state),
+fixed the PDF hosting problem (mostly the formal specs),
+built out more of the new user-friendly ledger API,
+finished a proof of concept for constraint-based generators for property tests
+(with the hopes of being able to replace our trace generators one day),
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="restructuring-the-ledger-state">Restructuring the ledger state<a class="hash-link" href="#restructuring-the-ledger-state" title="Direct link to heading">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,
+as described in CIP-1694.
+In particular, the ledger rules will be restructured as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">   BBODY</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |-------------------------------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v                               v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   TICK                            LEDGERS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |                               |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |---------|                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v         v                     v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |----------|          |--------|-------------------|-----------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v          v                   v                   v           v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                              |                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |---------|------------|       v                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v         v            v      DELPL                v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             |--------|          |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             v        v          v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">-..- Removed</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">+..+ Added</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">~..~ Modified</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.
+In the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.
+We have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pdf-hosting">PDF hosting<a class="hash-link" href="#pdf-hosting" title="Direct link to heading">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag
+with a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.
+The action creates a GitHub release containing the PDFs.
+The links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="powering-the-new-ledger-api">Powering the new ledger API<a class="hash-link" href="#powering-the-new-ledger-api" title="Direct link to heading">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,
+and replaced them with lenses.
+This is probably the last major restructuring that the ledger team will do on the code base
+for the API for a while
+(the Plutus tools team will be working on it next, see <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">here</a>).
+We also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative
+of not just an initial state, generate a single random valid block, and then test our properties.
+The hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a> massive CI speedup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a> better types for fees in the protocol parameters</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-14T00:00:00.000Z" itemprop="datePublished">January 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused
+the last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the
+new leger core and ghc-9.2.4</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate CHaP
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1331" target="_blank" rel="noopener noreferrer">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1332" target="_blank" rel="noopener noreferrer">#1332</a></li><li>Technical debt: Add code formatter fourmolu
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1334" target="_blank" rel="noopener noreferrer">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the
+technical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique
+<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to
+explicitly synchronize from genesis (if configured), and fixed smaller log and
+build issues reported by new users.</p><p>Besides this, a retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+was published by Matthias Benkort (CF) on Hydra, summarizing our progress made
+in 2022 also an outlook where Hydra is headed for in 2023. Also, the team had
+some first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href="https://hydra.family/head-protocol/monthly/2022-12" target="_blank" rel="noopener noreferrer">hydra
+website</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also
+an outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href="https://github.com/ch1bo/hydra-spec" target="_blank" rel="noopener noreferrer">latest
+version in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href="https://hydra.family/head-protocol/adr/21/" target="_blank" rel="noopener noreferrer">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-release">Node Release Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11-02---2023-01-13">2022-11-02 - 2023-01-13<a class="hash-link" href="#2022-11-02---2023-01-13" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on
+<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.
+This work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.5</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/46"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/48"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single
+Relay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href="https://input-output-hk.github.io/cardano-node-tests/readme.html" target="_blank" rel="noopener noreferrer">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html" target="_blank" rel="noopener noreferrer">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===
+  to
+  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">details here</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-12-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-12T00:00:00.000Z" itemprop="datePublished">January 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href="https://mithril.network/doc/adr/4" target="_blank" rel="noopener noreferrer">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href="https://github.com/input-output-hk/mithril/issues/671" target="_blank" rel="noopener noreferrer">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease" target="_blank" rel="noopener noreferrer">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href="https://github.com/input-output-hk/mithril/issues/681" target="_blank" rel="noopener noreferrer">#681</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-11-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During
+these weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and
+discussing with the Ledger team the changes that might be required for the next
+iterations. The pull request that adds the Conway era is waiting for a second
+review round and we hope to merge it soon. On the technical debt side we are
+looking into a property-test failure found in the iterators. We are
+investigating if this is an error in the model or in the implementation. We also
+improved the documentation of our testing code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.
+The Ledger team is concerned that for the remaining maps we might need the full
+ledger state on epoch boundaries. Since the main consumer of the ledger rules is
+Consensus, the code that requires access to a full state could be moved from the
+ledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take
+place in such bridge, instead of querying the ledger for the values that are
+required in the epoch-transition computations.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4234" target="_blank" rel="noopener noreferrer">relocated</a> some UTxO-HD definitions, in preparation for merging
+the prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory
+consumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely
+reaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The
+in-memory backend is about 30 minutes faster, but still slower than the baseline
+version. We are aware of this phenomenon and it is inherent to the problem of
+maintaining sequences of differences of the last <code>k</code> ledger states that allows
+us to perform rollback and roll-forward. We are in the process of measuring
+syncing from scratch times.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png" width="2500" height="1700" class="img_ev3q"></p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/pull/4263" target="_blank" rel="noopener noreferrer">added <code>StaticEither</code> accessors</a> that helped us to simplify
+the UTxO-HD prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era">New Conway era<a class="hash-link" href="#new-conway-era" title="Direct link to heading">​</a></h3><p>We incorporated the feedback of the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">pull request</a>, and rebased this
+branch on top of <code>master</code>. The PR is pending a second review round and we hope
+to merge this soon.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We are investigating a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">property-testing failure</a> involving
+iterators. Solving this requires understanding the expected behavior of
+iterators in the counterexample found by <code>QuickCheck</code> to determine if the error
+is in the model or in the implementation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4248" target="_blank" rel="noopener noreferrer">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the
+explanations about the tests are easier to find in the relevant modules, and the
+documentation is easier to keep up to date.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-11-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we&#x27;re now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we&#x27;ve made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we&#x27;ve started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>The improved tracing internals were implemented, and we&#x27;re now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.
+We now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.
+Once this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-06-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-06T00:00:00.000Z" itemprop="datePublished">January 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: The API features (error handling) has been merged. </li><li>Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href="https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d" target="_blank" rel="noopener noreferrer">Version 0.1.1</a>, which was published in <a href="https://crates.io/crates/kes-summed-ed25519" target="_blank" rel="noopener noreferrer">crates.io</a>. </li><li>Updated new KES format to mithril library <a href="https://github.com/input-output-hk/mithril/pull/674" target="_blank" rel="noopener noreferrer">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href="https://github.com/input-output-hk/mithril/pull/531" target="_blank" rel="noopener noreferrer">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href="https://github.com/input-output-hk/iohk-nix/pull/520" target="_blank" rel="noopener noreferrer">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href="https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518" target="_blank" rel="noopener noreferrer">PR#255</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cryptography-handbook">Cryptography handbook<a class="hash-link" href="#cryptography-handbook" title="Direct link to heading">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href="https://input-output-hk.github.io/cryptography_spec/" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/47"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/49"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-05-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-05T00:00:00.000Z" itemprop="datePublished">January 5, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,
+built out the new Conway era transaction body (in line with CIP-1694),
+greatly reduce some problematically large calculations on the epoch boundary,
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finishing-the-deposit-tracking">Finishing the deposit tracking<a class="hash-link" href="#finishing-the-deposit-tracking" title="Direct link to heading">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.
+As this is a large data structure
+(since its size is linear with respect to the number of registered stake credentials),
+it is very important that we also reduce the memory overhead as much as possible.
+Fortunately, we were able to add very little overhead for the deposits by using existing
+efficient data structures. The extra tracking now only incurs one word (8 bytes)
+per registered stake credential.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era-transaction">New Conway era transaction<a class="hash-link" href="#new-conway-era-transaction" title="Direct link to heading">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.
+Note that the Conway era implements, losing speaking, the parts of CIP-1694 that are not
+related to the liquid democracy (the &quot;DReps&quot;).
+The new transaction body adds the new governance actions and votes,
+while also deprecating the old governance structures
+(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.
+The wire specification is still subject to change while we work on the Conway era,
+but it is now usable and has proper testing support
+(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="optimizing-the-tickf-transition">Optimizing the <code>TICKF</code> transition<a class="hash-link" href="#optimizing-the-tickf-transition" title="Direct link to heading">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load
+placed on the node by the ledger at the epoch boundary.
+While still not perfect, we believe that we have removed one of the final problematically long
+epoch boundary computations that exacerbate situations like
+<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">this</a>.
+In particular, the problem involved the way in which the consensus layer obtains a view of the
+ledger for the purposes of checking the leadership schedule in a new epoch.
+We implemented a stopgap measure which now only incurs a single multi-second cost once per epoch
+instead of potentially several multi-second costs while the networks waits for the first block
+of a new epoch to be minted.</p><p>See:</p><ul><li>An <a href="https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md" target="_blank" rel="noopener noreferrer">ADR</a> about the decision.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-ledger-event">Improved ledger event<a class="hash-link" href="#improved-ledger-event" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.
+For this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now
+includes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-type-saftey">Improved type saftey<a class="hash-link" href="#improved-type-saftey" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR
+encoders and decoders were using the wrong level of precision, having to due with with
+the Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types
+for <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="codemodule-organization">Code/Module organization<a class="hash-link" href="#codemodule-organization" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,
+due to the uncertainly of release dates while we were implementing them.
+In particular, they were coupled in way that is different from the rest of the code base.
+With hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two
+separate ledger era packages, which is now consistent with the rest of the repository
+and module structure.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test
+generator code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,
+the ledger does not need to deal with signing keys, and since this is a topic that
+deserves the utmost care, it is best to make it clear that our use of signing keys
+is only for testing.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest
+of the codebase.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="revert-pointer-address-deprecation">Revert pointer address deprecation<a class="hash-link" href="#revert-pointer-address-deprecation" title="Direct link to heading">​</a></h4><p>Thanks to one of our excellent internal auditors,
+<a href="https://github.com/jmhrpr" target="_blank" rel="noopener noreferrer">@jmhrpr</a>,
+we now have a better plan for deprecating pointer addresses.
+This meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3161" target="_blank" rel="noopener noreferrer">issue-3161</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3215" target="_blank" rel="noopener noreferrer">pull-3215</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="miscellaneous">Miscellaneous<a class="hash-link" href="#miscellaneous" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,
+reducing many constraints.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a> - We switch from <a href="https://hackage.haskell.org/package/ormolu" target="_blank" rel="noopener noreferrer">ormolu</a> to
+<a href="https://hackage.haskell.org/package/fourmolu" target="_blank" rel="noopener noreferrer">fourmolu</a>.
+The reason was to be able to finally have more diff friendly code!</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-28-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-28T00:00:00.000Z" itemprop="datePublished">December 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-12-28 - 2023-01-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4762" target="_blank" rel="noopener noreferrer">Fix hedgehog-extras sha hash</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4759" target="_blank" rel="noopener noreferrer">Update hegehog-extras bounds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4751" target="_blank" rel="noopener noreferrer">GitHub token fix</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4743" target="_blank" rel="noopener noreferrer">Use setup-haskell action</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4738" target="_blank" rel="noopener noreferrer">Use Github Action to install libsecp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4714" target="_blank" rel="noopener noreferrer">Update index state and hedgehog-extras.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4710" target="_blank" rel="noopener noreferrer">Cleaned cabal files</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4737" target="_blank" rel="noopener noreferrer">Add cache versioning</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4742" target="_blank" rel="noopener noreferrer">Delete obsolete scripts</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4746" target="_blank" rel="noopener noreferrer">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4749" target="_blank" rel="noopener noreferrer">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4754" target="_blank" rel="noopener noreferrer">Optimise query stake-snapshot command</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-16-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-16T00:00:00.000Z" itemprop="datePublished">December 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/" target="_blank" rel="noopener noreferrer">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a>.</li><li>Recorded decision to use model-based testing (<a href="https://hydra.family/head-protocol/adr/22/" target="_blank" rel="noopener noreferrer">ADR22</a>) and improved Model <a href="https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html" target="_blank" rel="noopener noreferrer">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href="https://github.com/input-output-hk/hydra/issues/656" target="_blank" rel="noopener noreferrer">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href="https://github.com/input-output-hk/hydra/pull/646" target="_blank" rel="noopener noreferrer">#646</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Push <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-15T00:00:00.000Z" itemprop="datePublished">December 15, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2248.1" target="_blank" rel="noopener noreferrer"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href="https://crates.io/crates/mithril-stm" target="_blank" rel="noopener noreferrer"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node&#x27;s multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href="https://github.com/input-output-hk/mithril/issues/619" target="_blank" rel="noopener noreferrer">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/638" target="_blank" rel="noopener noreferrer">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Fixed the protocol parameters transition <a href="https://github.com/input-output-hk/mithril/issues/627" target="_blank" rel="noopener noreferrer">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href="https://github.com/input-output-hk/mithril/issues/510" target="_blank" rel="noopener noreferrer">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href="https://github.com/input-output-hk/mithril/issues/633" target="_blank" rel="noopener noreferrer">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href="https://github.com/input-output-hk/mithril/issues/621" target="_blank" rel="noopener noreferrer">#621</a></li><li>Worked on the re-genesis of the test networks <a href="https://github.com/input-output-hk/mithril/issues/651" target="_blank" rel="noopener noreferrer">#651</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the
+backing store and Mempool on the UTxO-HD branch with important discoveries
+regarding parallel QSM testing. We also worked with the Ledger team to envisage
+the modifications that are required in Ledger and Consensus to accommodate the
+changes in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking
+the ledger operations, which will allow us to identify, debug, and profile
+potential performance problems. We drafted a document that defines how to manage
+the versions of Consensus-related packages. The top level documentation of
+<code>ouroboros-network</code> now features a description of the consensus components and
+provides a hyperlinked map to the modules documentation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the
+parallel case proved to be more challenging than we thought. The operation of
+adding a list of transactions to the mempool is not atomic and, as a result,
+when adding a list of transactions, transactions from other processes can be
+added in between. The mempool implementation handles this correctly, however
+this required us to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">redesign</a> the parallel model we had to take
+the lack of atomicity into account.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We finished refactoring the backing store property tests. The second review
+round is ongoing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)
+fetching/looking up data from disk.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis
+design related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely
+delineates a fundamental component. We almost have a full Haskell prototype of
+it. It will be very nicely self-contained, perhaps even usable in the ultimate
+implementation!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto
+types to avoid huge allocation on the epoch boundary when changing aspects of
+the crypto that will only manifest in headers, not in the ledger states.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pull-request</a> that adds a support to <code>db-analyser</code> for
+benchmarking ledger operations. This will allow us to identify, debug, and
+profile potential performance problems. The benchmark focus on the main 5 ledger
+operations that are involved in chain syncing, block forging, and block
+validation, namely:</p><ol start="0"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65
+million blocks (approximately) of the Cardano chain. The thin yellow lines under
+the x-axis show the epoch boundaries, whereas the thick yellow lines correspond
+to the era transitions.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png" width="1600" height="800" class="img_ev3q"></p><p>As we can see in this figure, era and epoch boundaries require more computation
+time. The ledger team are aware of this problem, and we are working to improve
+this situation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4207" target="_blank" rel="noopener noreferrer">drafted a document</a> motivating and defining how Consensus (and
+possibly other core teams) will/should manage our package versions. This
+pull-request garnered many great discussions from our team members and other
+teams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et
+al. We want to thank you all for your input, and we found this discussion very
+enlightening!</p><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">pull request</a> that adds an overview of consensus to
+the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/48"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/50"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-08-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and
+tooling that we use for testing Ledger. Major Conway bugs that were discovered and
+squashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an
+ordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate
+certificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a
+serious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on
+expired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized &quot;Imp&quot; test library that allows us
+writing concise stateful unit tests for verifying the Ledger logic. Serious progress has
+been made on the conformance testing, where we can now interface with Haskell generated
+code from the Agda specification. Serialization testing has been extended to increase
+binary conformance coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3808" target="_blank" rel="noopener noreferrer">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3801" target="_blank" rel="noopener noreferrer">pull-3801</a> - Fix epoch rule and tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3803" target="_blank" rel="noopener noreferrer">pull-3803</a> - Fix delegation validation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3759" target="_blank" rel="noopener noreferrer">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3779" target="_blank" rel="noopener noreferrer">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3794" target="_blank" rel="noopener noreferrer">pull-3794</a> - Added anchor to resign certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3797" target="_blank" rel="noopener noreferrer">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3848" target="_blank" rel="noopener noreferrer">pull-3848</a> - Plutus modules restructure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3840" target="_blank" rel="noopener noreferrer">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3856" target="_blank" rel="noopener noreferrer">pull-3856</a> - Add governance related ledger events</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3825" target="_blank" rel="noopener noreferrer">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3831" target="_blank" rel="noopener noreferrer">pull-3831</a> - Treasury withdrawal fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3791" target="_blank" rel="noopener noreferrer">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3836" target="_blank" rel="noopener noreferrer">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3846" target="_blank" rel="noopener noreferrer">pull-3846</a> - Revert argument order swap.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3782" target="_blank" rel="noopener noreferrer">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3842" target="_blank" rel="noopener noreferrer">pull-3842</a> - Imp improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3844" target="_blank" rel="noopener noreferrer">pull-3844</a> - Add mappings to Agda types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3853" target="_blank" rel="noopener noreferrer">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3809" target="_blank" rel="noopener noreferrer">pull-3809</a> - CDDL roundtrip testing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3832" target="_blank" rel="noopener noreferrer">pull-3832</a> - Treasury withdrawals tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3839" target="_blank" rel="noopener noreferrer">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3841" target="_blank" rel="noopener noreferrer">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3843" target="_blank" rel="noopener noreferrer">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3795" target="_blank" rel="noopener noreferrer">pull-3795</a> - Bump plutus to 1.15</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3798" target="_blank" rel="noopener noreferrer">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3799" target="_blank" rel="noopener noreferrer">pull-3799</a> - Changes needed for 8.6 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3807" target="_blank" rel="noopener noreferrer">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3819" target="_blank" rel="noopener noreferrer">pull-3819</a> - Fixups needed for a release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3829" target="_blank" rel="noopener noreferrer">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3830" target="_blank" rel="noopener noreferrer">pull-3830</a> - Bump aeson to 2.2</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3833" target="_blank" rel="noopener noreferrer">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3828" target="_blank" rel="noopener noreferrer">pull-3828</a> - Add changelog for node release 8.6</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-08-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the &#x27;release-mainnet&#x27; aggregator.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href="https://github.com/input-output-hk/mithril/issues/1322" target="_blank" rel="noopener noreferrer">#1322</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-01-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">survivable eclipse duration</a>, which is part of our work <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/427" target="_blank" rel="noopener noreferrer">supporting Genesis delivery</a>, and how to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">improve the handling of blocks from the future</a>.
+Regarding the UTxO-HD branch, we managed to run a node with <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.
+We also <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122" target="_blank" rel="noopener noreferrer">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the &#x27;devnet&#x27; faster and fixed some regressions in the Mithril client CLI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1321" target="_blank" rel="noopener noreferrer">#1321</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid
+overwriting existing keys, and resolved issues related to the rewritten
+<code>hydra-tui</code>. They also worked on a \&quot;dirt road\&quot; implementation for the
+\&quot;Ignored init tx\&quot; notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including
+implementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check
+out our Masterclass about \&quot;Developing Hydra + Mithril for Scaling Cardano\&quot; on
+Friday, November 3 at 14:00-15:30 local time in the \&quot;Al Dar\&quot; room!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys
+<a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Finalized cardano summit preparation
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">link to
+repository</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/4"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/6"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have
+been found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses
+reverse indexes, same as the release
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1320" target="_blank" rel="noopener noreferrer">#1320</a>
+This also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1324" target="_blank" rel="noopener noreferrer">#1324</a></li><li>AdaPots fix <a href="https://github.com/input-output-hk/cardano-db-sync/pull/1323" target="_blank" rel="noopener noreferrer">#1323</a>. This
+fixes an issue where the per epoch AdaPots didn&#x27;t match the epoch boundary, but
+they also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">#3212</a>. This pr
+adjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the
+number of queries that db-sync does during syncing an make syncing faster.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-12-14 - 2022-12-27</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4703" target="_blank" rel="noopener noreferrer">Move style guide to wiki</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4734" target="_blank" rel="noopener noreferrer">Cache secp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4717" target="_blank" rel="noopener noreferrer">Use cabal-cache</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4699" target="_blank" rel="noopener noreferrer">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4724" target="_blank" rel="noopener noreferrer">Update cabal.project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4125" target="_blank" rel="noopener noreferrer">Add aarch64-darwin to nix-shell</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4626" target="_blank" rel="noopener noreferrer">Improved error message for failed asset name decode</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4700" target="_blank" rel="noopener noreferrer">Remove cardano-cli address build-script</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4698" target="_blank" rel="noopener noreferrer">Move signing key reading to cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4712" target="_blank" rel="noopener noreferrer">Only run chairman test on latest era</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4679" target="_blank" rel="noopener noreferrer">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we&#x27;ve planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we&#x27;re continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we&#x27;ll be running the model cluster workload.</p><p>We&#x27;ve also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we&#x27;ve done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that&#x27;s also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it&#x27;s the fair benchmark, because that&#x27;s the way we expect SPO&#x27;s to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we&#x27;ve established the performance of the new system to be adequate for the release, we won&#x27;t be delaying it much further.</p><p>In addition, we&#x27;re still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we&#x27;ve also improved provenance of the raw data, by collecting more identification information and statistics about it.
+This means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.
+This will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.
+Previously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)
+Naturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-12T00:00:00.000Z" itemprop="datePublished">December 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We merged the API redesig <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We&#x27;ll probably circle back to this in the future <a href="https://github.com/input-output-hk/musig2/pull/36" target="_blank" rel="noopener noreferrer">PR#36</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We merged the individual signature <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href="https://github.com/input-output-hk/kes/commits/master" target="_blank" rel="noopener noreferrer">kes repo</a>) </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href="https://gitlab.haskell.org/ghc/ghc/-/issues/22564" target="_blank" rel="noopener noreferrer">bug in GHC</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Fixed a &#x27;use-after-free&#x27; bug in the KES agent.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/49"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/51"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on completing to &quot;Validate coordinated head protocol against formal model&quot;, this is a huge step to verify the implementation is secure. They also worked on implementing <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> related to bounded tx validity which is now under review. <a href="https://github.com/obsidiansystems/hydra-pay" target="_blank" rel="noopener noreferrer">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href="https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue" target="_blank" rel="noopener noreferrer">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Document model based testing <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a> &amp; <a href="https://github.com/input-output-hk/hydra/issues/641" target="_blank" rel="noopener noreferrer">#641</a></li><li>Got <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href="https://github.com/input-output-hk/hydra/issues/634" target="_blank" rel="noopener noreferrer">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock &quot;the RFP prepared for the external audit&quot; <a href="https://github.com/input-output-hk/hydra/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href="https://github.com/input-output-hk/hydra/issues/630" target="_blank" rel="noopener noreferrer">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href="https://github.com/input-output-hk/hydra/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly
+<code>cardano-ledger-api</code> package!
+A <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>
+will be filled out in the days ahead,
+people interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using
+<a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">architectural decision records</a>
+to leave a record of important decisions that the team makes.
+We will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.
+We are prioritizing correctness with our first pull request, and will follow up with
+performance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a>
+for more context.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ledger-api">Cardano ledger API<a class="hash-link" href="#cardano-ledger-api" title="Direct link to heading">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it
+out and adding much needed documentation.
+They have also added doctests!
+In the days to come, the Plutus tools team will map out a lot more work for the API and record
+it in this
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3182" target="_blank" rel="noopener noreferrer">pull-3182</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3188" target="_blank" rel="noopener noreferrer">pull-3188</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="architectural-decision-records-adrs">Architectural Decision Records (ADRs)<a class="hash-link" href="#architectural-decision-records-adrs" title="Direct link to heading">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made
+in the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3177" target="_blank" rel="noopener noreferrer">pull-3177</a> (rendered <a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">here</a>)</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tracking-individual-deposits">Tracking individual deposits<a class="hash-link" href="#tracking-individual-deposits" title="Direct link to heading">​</a></h4><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3190/files" target="_blank" rel="noopener noreferrer">ADR-3</a>
+for background.
+We now have the logic in place to track individual deposits, and a host of property tests
+to make sure that the logic is correct.
+The current implementation uses more memory than it needs to, and we will address that next,
+with our hope being to only use one word (8 bytes) per registered stake credential.
+There is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="removing-pointer-addresses">Removing pointer addresses<a class="hash-link" href="#removing-pointer-addresses" title="Direct link to heading">​</a></h4><p>Pointer addresses, which have never seen any real use
+(there are something like eleven on mainnet), are being deprecated starting at Cardano major
+version 9.
+<a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a> gives the context.
+We are disabling them by first preventing transaction outputs containing them
+from being serialized by the node at the moment we switch to version 9.
+At the hard fork after that, we will translate the existing few pointer addresses
+to enterprise addresses.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3174" target="_blank" rel="noopener noreferrer">pull-3174</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never
+be exercised. After we have passed the given hardfork, we are able to clean up the code
+and simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3165" target="_blank" rel="noopener noreferrer">pull-3165</a> - We improved the type safety of our code while also discovering and fixing
+a serialization bug.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed dead code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to
+dislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We organized our property testing code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3200" target="_blank" rel="noopener noreferrer">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the
+ledger state to the Plutus script context.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-02-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-02T00:00:00.000Z" itemprop="datePublished">December 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress
+after last week&#x27;s summit. They have extended their model-based testing (MBT)
+approach with transaction creation &amp; observation
+<a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a>, solved
+<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet
+initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a>.
+Also, the Hydra researchers updated the security proofs of the Coordinated Hydra
+Head, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href="https://github.com/input-output-hk/hydra/pull/644" target="_blank" rel="noopener noreferrer">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-db-sync">DB sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,
+it makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces
+migrations. This release finalises the objectives that were set for db-sync for the previous
+3 months period and part of the syncing speed objective set for the next period
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100" target="_blank" rel="noopener noreferrer">Changelog</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li><p>Branch <a href="https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b" target="_blank" rel="noopener noreferrer">release/13.1.0.x</a>
+includes all the improvements related to the release. The release is passing through the testing
+phase and a number of bugs and issues have been fixed, like
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a>
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a>.
+Also many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new
+release and development process, so that it takes into account migrations
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1305" target="_blank" rel="noopener noreferrer">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for
+docker.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href="https://github.com/input-output-hk/mithril/issues/585" target="_blank" rel="noopener noreferrer">#585</a></li><li>Completed the second stage of the store automatic migration process <a href="https://github.com/input-output-hk/mithril/issues/600" target="_blank" rel="noopener noreferrer">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href="https://github.com/input-output-hk/mithril/issues/599" target="_blank" rel="noopener noreferrer">#599</a></li><li>Completed CI/CD handling of PR from forks <a href="https://github.com/input-output-hk/mithril/issues/597" target="_blank" rel="noopener noreferrer">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/586" target="_blank" rel="noopener noreferrer">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Worked on multi-platforms end to end test <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/50"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/52"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single
+Relay</em> functionality, and also tested some DB-Sync tags.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href="https://github.com/mkoura/report-aggregator" target="_blank" rel="noopener noreferrer">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic
+cursor API that was needed to implement LMDB range reads, which is in turn
+required for the implementation of the UTxO HD feature. We added tables to
+several tests in for the UTxO HD feature, which increases our confidence in the
+correctness of the prototype. The mempool property tests are close to being
+completed. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with
+CSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a
+high-level overview of consensus to the top level documentation of
+<code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>)) which was
+needed to solve a bug with LMDB range-reads. After this PR was merged, we focused on
+bridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating
+using <code>lmdb-simple</code>&#x27;s cursor API without <code>Serialise</code> constraints (<a href="https://github.com/input-output-hk/lmdb-simple/pull/3" target="_blank" rel="noopener noreferrer">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4184" target="_blank" rel="noopener noreferrer">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses
+tables. This will enable us to exercise the UTxO HD mempool integration by
+leveraging the existing mempool property-tests. The new state-machine
+property-tests are still needed for testing the parallel behaviour of the
+mempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements
+in the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the
+state machine did not have access to mutable references. However, the mempool
+tests require the use of such mutable references for mocking the ledger
+interface. As a result, our parallel tests were failing with rather obscure
+messages. @Jasagredo submitted a pull request (<a href="https://github.com/stevana/quickcheck-state-machine/pull/12" target="_blank" rel="noopener noreferrer">#12</a>) that allows for
+new mutable references to be created at each run of the state machine.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code
+and gathering results (i.e., plots and their interpretation).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="csj-prototype">CSJ prototype<a class="hash-link" href="#csj-prototype" title="Direct link to heading">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact
+KES and batched VRF (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4151" target="_blank" rel="noopener noreferrer">#4151</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We
+are now working on the &quot;Implementation&quot; section (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4020" target="_blank" rel="noopener noreferrer">#4020</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4146" target="_blank" rel="noopener noreferrer">#4146</a> and <a href="https://github.com/input-output-hk/ouroboros-network/pull/4174" target="_blank" rel="noopener noreferrer">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">#4197</a>). This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-30 - 2022-12-13</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Append tx output in cli transaction build command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4592" target="_blank" rel="noopener noreferrer">Update Error messages in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Replace Data.Map with Data.Map.Strict</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4708" target="_blank" rel="noopener noreferrer">Update Github actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don&#x27;t see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.
+The idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.
+We are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-28T00:00:00.000Z" itemprop="datePublished">November 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG&#x27;s benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We&#x27;ve seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don&#x27;t expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;kind&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;PeerStatusChangeFailure&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;peerStatusChangeType&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;reason&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;TimeoutError&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don&#x27;t try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There&#x27;s a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/51"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/53"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-25-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don&#x27;t need to be aware of the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/31" target="_blank" rel="noopener noreferrer">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library&#x27;s README <a href="https://github.com/input-output-hk/mithril/pull/616" target="_blank" rel="noopener noreferrer">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>We&#x27;ve been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-25-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-23-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-23T00:00:00.000Z" itemprop="datePublished">November 23, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We released <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>,
+our proposal for entering the <a href="https://roadmap.cardano.org/en/voltaire/" target="_blank" rel="noopener noreferrer">Voltaire phase</a>.
+<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for
+Cardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.
+The draft pull request was polished, reviewed, and merged this week.
+This solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,
+and the ledger team in particular dedicated one engineer to help with these efforts
+for the next release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-conway-ledger-era">The Conway ledger era<a class="hash-link" href="#the-conway-ledger-era" title="Direct link to heading">​</a></h3><p>The current proposal in <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a> encompasses two new ledger eras.
+The first era will be called Conway, after the English mathematician John Horton Conway.
+The community facing aspects of the Conway ledger era will be very minimal,
+but it will pave the way for introducing liquid democracy.
+The details can be viewed <a href="https://github.com/input-output-hk/cardano-ledger/projects/4" target="_blank" rel="noopener noreferrer">here</a>.
+We do not yet have a formal specification for the Conway era.
+Our plan is to debut the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>.
+Briefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href="https://github.com/cardano-foundation/CIPs/pull/318" target="_blank" rel="noopener noreferrer">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="versioned-cbor">Versioned CBOR<a class="hash-link" href="#versioned-cbor" title="Direct link to heading">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano
+major protocol version.
+We still aim to preserve backwards compatibility as much as possible, but we now have a principled
+plan for resolving problems (see <a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">CIP-ledger-cbor</a>).
+In particular, we can now address several long standing issues, such as
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>, <a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits
+is much closer now to being ready to take out of draft (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>).
+For background on the issue, see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>.
+This is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>As always, we keep working on technical debt.
+We have deduplicated a some things: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3129" target="_blank" rel="noopener noreferrer">pull-3129</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a>.
+We have memoized a problematic computation (though more due diligence is needed before we can
+merge): <a href="https://github.com/input-output-hk/cardano-ledger/pull/3141" target="_blank" rel="noopener noreferrer">pull-3141</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node-release">Node release<a class="hash-link" href="#node-release" title="Direct link to heading">​</a></h3><p>We have been helping with the node release efforts. See <a href="https://github.com/input-output-hk/cardano-node/pull/4608" target="_blank" rel="noopener noreferrer">pull-4608</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-18-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href="https://github.com/input-output-hk/hydra" target="_blank" rel="noopener noreferrer"><code>hydra</code></a>!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href="https://github.com/input-output-hk/hydra/releases/tag/0.8.1" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href="https://github.com/input-output-hk/hydra/pull/615" target="_blank" rel="noopener noreferrer">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-18-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released a new Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2246.1" target="_blank" rel="noopener noreferrer">2246.1</a></li><li>Completed the first stage of the store migrations process <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href="https://github.com/input-output-hk/mithril/issues/576" target="_blank" rel="noopener noreferrer">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href="https://github.com/input-output-hk/mithril/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href="https://github.com/input-output-hk/mithril/issues/594" target="_blank" rel="noopener noreferrer">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/52"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/54"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team started documenting the
+implementation of the UTxO HD feature and continued developing tests for it. As
+part of our work on UTxO HD, we improved the Haskell support for LMDB. We also
+spent time working on the LSM tree prototype, and designed a parameter tuning
+algorithm for it. Regarding our work on Genesis, our investigation of the
+&quot;plateaus&quot; pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This
+led us to developing a caching strategy that will not only remove the
+aforementioned &quot;plateaus&quot;, but can help alleviating the growing block production
+delay on epoch switch. We also helped reviewing the block forge credential
+hotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In
+particular, we improved the <code>io-sim</code> framework, which is crucial for testing and
+simulating Cardano components. We also removed thunks that appeared on era
+translations, and improved our diffusion pipelining feature. We are working on a
+presentation for explaining Praos and Genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the
+anti-diff implementation of sequences of differences. Speedups are now in the
+range of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a &quot;parameter tuning algorithm&quot; for the LSM tree
+prototype. This enables us to run experiments to check the correctness of
+the algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the &quot;plateaus&quot; in the <code>ChainSync</code> jumping prototype
+pointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for
+testing and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ &quot;plateaus&quot; led us to developing a caching strategy for
+<code>TICKF</code> that will not only remove these &quot;plateaus&quot;, but can help alleviating
+the growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended
+for use in the adoption of P2P.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4060" target="_blank" rel="noopener noreferrer">#4060</a>, which adds a report documenting the UTxO HD
+feature, and puts emphasis in explaining how the mempool works in combination
+with UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the
+mempool (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4143" target="_blank" rel="noopener noreferrer">#4143</a>). The problem was that we were testing with mostly small
+values, which artificially boosted the performance gains we saw on benhcmarks.
+Speedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different
+configurations.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>).
+This required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new
+API. We also updated the backing store property tests to use the new version of
+the monadic cursor API.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a
+&quot;parameter tuning algorithm&quot; that adapts the LSM tree design based on factors
+like:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with
+existing experimental results from the LSM tree paper to see if the algorithm is
+working correctly.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>We focused on investigating the &quot;plateaus&quot; in the <code>ChainSync</code> tip, which turned
+out to be due to the <code>TICKF</code> bug which we previously were only aware of in the
+context of the long forging times near epoch boundaries. For the most drastic
+patch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the
+<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png" width="765" height="445" class="img_ev3q"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the
+baseline.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png" width="773" height="445" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>After addressing the PR comments, we merged PR <a href="https://github.com/input-output-hk/io-sim/pull/16" target="_blank" rel="noopener noreferrer">#16</a>, which implements
+the <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>
+library, which is crucial for testing and simulating Cardano components PR #16
+closed <a href="https://github.com/input-output-hk/ouroboros-network/issues/1461" target="_blank" rel="noopener noreferrer">#1461</a>. This new feature was published as version <code>0.4.0.0</code>
+of <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling
+nightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and
+<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of
+thunks that appeared in era translations (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3143" target="_blank" rel="noopener noreferrer">#3143</a>). The fixes will be
+integrated back into consensus when <code>cardano-ledger</code> approves and publish the
+changes introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/2" target="_blank" rel="noopener noreferrer">#2</a>). We currently test the build on
+a Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3857" target="_blank" rel="noopener noreferrer">#3857</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3860" target="_blank" rel="noopener noreferrer">#3860</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3856" target="_blank" rel="noopener noreferrer">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and
+Genesis explanation presentations. The idea is to produce a video that gives an
+overview of these protocols.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4054" target="_blank" rel="noopener noreferrer">#4054</a>), since this was blocking our benchmarking work for
+Genesis. In addition, this issue has the Cardano community <a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">quite
+concerned</a>, so we are hoping the work done in caching the
+computation of the <code>TICKF</code> rule can help alleviating the growing block
+production delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">#3800</a> from the
+networking team, which is intended for use in the adoption of P2P.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-16 - 2022-11-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4562" target="_blank" rel="noopener noreferrer">Add a native tokens tutorial and exercises</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4674" target="_blank" rel="noopener noreferrer">Update cardano-cli&#x27;s help</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4644" target="_blank" rel="noopener noreferrer">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4639" target="_blank" rel="noopener noreferrer">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4650" target="_blank" rel="noopener noreferrer">Fix windows CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href="https://github.com/input-output-hk/cardano-base/pull/336" target="_blank" rel="noopener noreferrer">PR</a> has been merged, and we&#x27;ve adapted the KES secure <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#</a>). Finally, we&#x27;ve &#x27;cleaned&#x27; our libsodium fork, and we directly fork upstream, rather than forking Algorand&#x27;s fork. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href="https://github.com/input-output-hk/kes-agent" target="_blank" rel="noopener noreferrer">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper
+on our &quot;Hydra for Payments&quot; project (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href="https://github.com/input-output-hk/hydra-poc/issues/599" target="_blank" rel="noopener noreferrer">#599</a>)</li><li>Minor improvements to logging for better observability (<a href="https://github.com/input-output-hk/hydra-poc/issues/598" target="_blank" rel="noopener noreferrer">#598</a>, <a href="https://github.com/input-output-hk/hydra-poc/issues/600" target="_blank" rel="noopener noreferrer">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href="https://github.com/input-output-hk/hydra-poc/issues/590" target="_blank" rel="noopener noreferrer">#590</a>)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Close more gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/53"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/55"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned
+CBOR serialization. This was an enormous effort, but it will solve a host of problems that we have
+had since the Shelley phase. It will take time to properly review it, and we will
+need to put in a lot of effort to integrate it with the downstream components, but this is  a huge
+milestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction
+serialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will
+not notice any difference, but it is a necessary change needed to prepare the way for
+decentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on
+bringing coherency and consistency to the code base with a common naming convention, and
+improving some error messages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.
+When we encounter a problem with our deserializers, it can be very difficult to implement a fix.
+It is difficult because we can only fix such issues during a hard fork, and leading up to the
+hard fork we must maintain two serializations for the same type in order to not cause unintended
+network splitting (the problematic version must be used before the hard fork,
+and the fixed version is used afterwards).
+This can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to
+search for where all the problematic uses are located.
+The new versioned CBOR serialization allows us to gracefully handle this transition.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.
+See [<a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">pull-372</a>].</li><li>We have draft for the new deposit tracking.
+This draft is not as memory efficient as the final version will be,
+but it is a sufficient proof of concept that we can write property tests against, ensuring
+that we have not changed the semantics.
+We will optimize after we are sure of the correctness.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper
+function, named <code>evaluateTransactionExecutionUnits</code>.
+In particular, it now returns all the information needed to rerun the script with exactly the
+same arguments. This feature will end up appearing in the CLI and other tools from the Plutus
+tools team.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3135" target="_blank" rel="noopener noreferrer">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3126" target="_blank" rel="noopener noreferrer">pull-3126</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3120" target="_blank" rel="noopener noreferrer">pull-3120</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3118" target="_blank" rel="noopener noreferrer">pull-3118</a>], and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3116" target="_blank" rel="noopener noreferrer">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the
+<a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3139" target="_blank" rel="noopener noreferrer">pull-3139</a>].</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster
+(which consists of 50 nodes).  There is a performance regression in the header
+notification metric.  The P2P cluster is constructed with the same
+topology as the non-p2p reference one this indicates some regression which
+needs to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P
+release for BP nodes: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with
+<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detail-description">Detail description<a class="hash-link" href="#detail-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance-regression">Performance regression<a class="hash-link" href="#performance-regression" title="Direct link to heading">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png" class="img_ev3q"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of
+the slot to when a header was received. The <code>y</code> axis is the percentile of nodes
+that received a header.  We are currently investigating possible causes of the
+regression. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-p2p-topology-form">New P2P topology form<a class="hash-link" href="#new-p2p-topology-form" title="Direct link to heading">​</a></h3><p>The new topology file format is described in this <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing-improvements">Tracing improvements<a class="hash-link" href="#tracing-improvements" title="Direct link to heading">​</a></h3><ul><li>We improved a handshake error reporting, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4136" target="_blank" rel="noopener noreferrer">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>
+in <code>json</code> format, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">pull #4127</a>.  Such demotions should be investigated by the
+pool operator.  They can indicate a problem in the deployed system, but also
+they could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-improvements">Open Source Improvements<a class="hash-link" href="#open-source-improvements" title="Direct link to heading">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source
+contributors and/or maintenance tasks: <a href="https://github.com/input-output-hk/typed-protocols/pull/22" target="_blank" rel="noopener noreferrer">pull #22</a>, <a href="https://github.com/input-output-hk/io-sim/pull/45" target="_blank" rel="noopener noreferrer">pull #45</a>, <a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pull #48</a>. </p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-04-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a>. They also completed implementation of <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a> and alignment of the specification document with auditors.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete and merge ADR18 <a href="https://github.com/input-output-hk/hydra-poc/pull/579" target="_blank" rel="noopener noreferrer">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/595" target="_blank" rel="noopener noreferrer">#595</a></li><li>Have first gap of <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we&#x27;ve implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href="https://github.com/input-output-hk/mithril/issues/500" target="_blank" rel="noopener noreferrer">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href="https://github.com/input-output-hk/mithril/issues/542" target="_blank" rel="noopener noreferrer">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href="https://github.com/input-output-hk/mithril/issues/543" target="_blank" rel="noopener noreferrer">#543</a></li><li>Publication of an <a href="https://mithril.network/doc/adr/3" target="_blank" rel="noopener noreferrer">ADR3</a></li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2022/10/28/updated-environments" target="_blank" rel="noopener noreferrer">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2244.0" target="_blank" rel="noopener noreferrer">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href="https://github.com/input-output-hk/mithril/issues/526" target="_blank" rel="noopener noreferrer">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href="https://github.com/input-output-hk/mithril/pull/484" target="_blank" rel="noopener noreferrer">#484</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-31-open-source">Open-Source Team</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High Level Summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>We&#x27;ve been working toward publishing <em>Cardano Backlog</em>, currently its in
+review by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">cardano-updates</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for
+cardano project.  In last few weeks we were making steps towards publishing our
+backlog.  It&#x27;s currently under review by the communication team, although most
+of the issues are already visible across various repositories.</p><p>The open-source initiatives have their own
+<a href="https://github.com/orgs/input-output-hk/projects/60" target="_blank" rel="noopener noreferrer">project</a>.  It is set up
+to help us track our major open-source activities.  Right now there are two
+work streams:</p><ul><li>the work on <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href="https://hackage.haskell.org/" target="_blank" rel="noopener noreferrer">Hackage</a> or <a href="https://crates.io" target="_blank" rel="noopener noreferrer">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to
+<em>Cardano</em> which we would like publish to publish, see the following
+<a href="https://github.com/orgs/input-output-hk/projects/60/views/3" target="_blank" rel="noopener noreferrer">link</a>.  Arnauld Bailly recently published
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+library on Hackage.  The networking team is slowly progressing towards
+publishing <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">io-sim</a> and related packages, checkout the progress
+<a href="https://github.com/orgs/input-output-hk/projects/19/views/24" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Thanks to Arnaud Bailly our <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">Cardano Updates</a> website has
+a new look &amp; feel!  It&#x27;s using <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source
+repositories.  He collected many interesting metrics, which allows us to see
+where we need to improve as an open-source project to make the Cardano project
+and many smaller related libraries which we maintain be more open and available
+for open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano
+repositories are missing the most:
+<img loading="lazy" alt="Documentation Adoption" src="/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png" width="1493" height="716" class="img_ev3q">
+You can expect we will improve in these metrics in the coming weeks.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/open-source">open-source</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/54"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/56"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-03-embedding-quality">Embedding Quality Workstream</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-03T00:00:00.000Z" itemprop="datePublished">November 3, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)
+See <a href="https://input-output-hk.github.io/cardano-node-tests" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>We defined an <a href="https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md" target="_blank" rel="noopener noreferrer">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href="https://github.com/input-output-hk/cardano-node/issues" target="_blank" rel="noopener noreferrer">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/embedding-quality">embedding-quality</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-02-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the
+UTxO HD prototype. We completed the era-transition and backing store tests, and
+the mempool tests are advancing at a steady pace. Regarding our work in the
+Genesis design, we continued our collaboration with the research and networking
+teams, and we continue investigating strategies for making the chain-sync
+jumping prototype faster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs
+in the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to
+incorporate the improvements to the LMDB cursor API that these tests
+made possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and
+the networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping
+prototype. We gained additional insight on which parameters to tweak next.
+In spite of the baseline still being faster, the current prototype already
+achieves a significant speedup when compared to the naive approach of simply
+running full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular
+we merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4073" target="_blank" rel="noopener noreferrer">era-transition tests
+PR</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">backing store property tests
+PR</a> has been
+reviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting
+test cases.</li></ul><p>The <a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">monadic cursor API</a>
+went through its first review round. The API is in a relatively stable state.
+This PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB
+operations. The next steps are:</p><ul><li>Write
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+state-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property
+tests. This will involve adding boilerplate code in consensus to make up for
+the removal of the <code>cborg</code>-based interface.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h2><p>We worked on the <a href="https://github.com/input-output-hk/ouroboros-network/issues/4121" target="_blank" rel="noopener noreferrer">LSM tree
+prototype</a>. In
+particular, we focused on tuning the LSM tree design to the different workloads
+that consensus has (eg syncing, normal node operation, etc).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular
+we compared the performance of different jump intervals, which, somewhat
+surprisingly, do not make a significant difference. In particular, we are seeing
+periodic &quot;plateaus&quot; where the chain-sync tip does not progress, but they are
+much longer for the prototype. Our hypothesis is that this seem to be due to a
+combination of the garbage collector (GC) pauses, and the actual time it takes
+the non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo
+fragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of
+tweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype
+using different jumping intervals. It compares the syncing progress by plotting
+the slots of adopted blocks against time. The baseline is still faster, however
+it is worth noting that the current prototype already achieves a significant
+speedup when compared to the naive approach of simply running full chain-sync
+with all peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg" width="998" height="445" class="img_ev3q"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,
+and includes, in addition to the slots of adopted blocks, the slots of the tip
+of the ChainSync fragment. This allows us to see how far ahead of the selected
+tip the CS dynamo is, i.e. how much room we have for BlockFetch not to get
+stalled. It shows periodic behaviour (due to the forecasting limit), and shows
+that the CS fragment tip is not progressing for significant periods
+(&quot;plateaus&quot;).</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg" width="998" height="445" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4098" target="_blank" rel="noopener noreferrer">clarified</a> a
+common source of confusion around VRF tie-breaking and cross-era chain
+selection. This PR involved correcting potentially misleading names of
+VRF-related functions, and providing context for a particular VRF value is
+used for tie-breaking.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have made the decision to use the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+in place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure
+to the model. In particular, we now have a lot of support for axiomatic set theory.
+While the next ledger era is still in the design phase, most of the team remains working
+on technical debt.
+In particular, we have moved a lot more code out of the Shelley specific modules and into
+a ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>
+ledger transition (while improving the performance), made conveniences to the development
+environment, cleaned up all the recent changes to the cost model, added a lot of documentation,
+fixed some flaky tests, and deleted some dead code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="axiomatic-set-theory">Axiomatic Set Theory<a class="hash-link" href="#axiomatic-set-theory" title="Direct link to heading">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in
+the formal ledger specifications. See [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>].</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">pull-3039</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3093" target="_blank" rel="noopener noreferrer">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which
+makes our CBOR serialization round-trip tests much more robust, and will also hopefully
+help enforce the mandate for downstream libraries to never re-serialize data that needs
+to be hashed. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3095" target="_blank" rel="noopener noreferrer">pull-3095</a>]
+(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.
+We now have a lot of benchmarks surrounding this code, and have added performance improvements.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>].</li><li>We have restored support for
+<a href="https://hackage.haskell.org/package/ghcid" target="_blank" rel="noopener noreferrer">ghcid</a>
+in our repository. This is a tool for developing with Haskell that many of us find greatly
+improves our productivity by providing us with constant feedback from the type checker.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3112" target="_blank" rel="noopener noreferrer">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3075" target="_blank" rel="noopener noreferrer">pull-3075</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3101" target="_blank" rel="noopener noreferrer">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the
+ledger repository, and cleaned it up
+(most of the heavy lifting was done by our amazing technical writers).
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3091" target="_blank" rel="noopener noreferrer">pull-3091</a>].</li><li>We removed dead code. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3089" target="_blank" rel="noopener noreferrer">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3109" target="_blank" rel="noopener noreferrer">pull-3109</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3110" target="_blank" rel="noopener noreferrer">pull-3110</a>].</li><li>We&#x27;ve removed more of the awkward legacy template Haskell names.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3108" target="_blank" rel="noopener noreferrer">pull-3108</a>].</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-02 - 2022-11-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4567" target="_blank" rel="noopener noreferrer">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4587" target="_blank" rel="noopener noreferrer">Add Ord instance for AddressInEra</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4496" target="_blank" rel="noopener noreferrer">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4635" target="_blank" rel="noopener noreferrer">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4628" target="_blank" rel="noopener noreferrer">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4599" target="_blank" rel="noopener noreferrer">export RawBytesHexError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/2883" target="_blank" rel="noopener noreferrer">Add Plutus minting script doc</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575/files" target="_blank" rel="noopener noreferrer">Improve test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4586" target="_blank" rel="noopener noreferrer">Enable stale bot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4557" target="_blank" rel="noopener noreferrer">Add link to troubleshooting page in the wiki</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4550" target="_blank" rel="noopener noreferrer">Use environment files in Github Actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4544" target="_blank" rel="noopener noreferrer">Add single entrypoint for starting testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575" target="_blank" rel="noopener noreferrer">Improve cardano-testnet test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4595" target="_blank" rel="noopener noreferrer">Reorder module hierarchy</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-release">Node Release Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-19---2022-11-02">2022-10-19 - 2022-11-02<a class="hash-link" href="#2022-10-19---2022-11-02" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,
+a temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc1 tag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href="https://github.com/input-output-hk/cardano-node/pull/4540" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li><li><p><a href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre" target="_blank" rel="noopener noreferrer">Cicero CI Migration</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/55"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/57"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href="https://input-output-hk.github.io/cardano-node-tests/" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests" target="_blank" rel="noopener noreferrer">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-01-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,
+unique and foreign keys. It also provides a way to fix older values and migrates without the need to
+resync from genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="schema-simplifications">Schema simplifications<a class="hash-link" href="#schema-simplifications" title="Direct link to heading">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1295" target="_blank" rel="noopener noreferrer">#1295</a>
+The same pr also introduces a different way to rollback, which doesn&#x27;t rely on foreign keys and
+indexes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A
+conservative number of these will be included in the next release and the rest can be found in
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/7" target="_blank" rel="noopener noreferrer">performance view</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="migrations-and-resyncing">Migrations and resyncing<a class="hash-link" href="#migrations-and-resyncing" title="Direct link to heading">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also
+introduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release">Release<a class="hash-link" href="#release" title="Direct link to heading">​</a></h3><p>The release has been mostly cherry-picked from master
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a> and its scope can be seen
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/6" target="_blank" rel="noopener noreferrer">release view</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team completed several user experience improvements to the
+<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head
+states by publishing release version
+<a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>.
+Besides this, they met with researchers on topic of the HeadV1 specification and
+kicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Have a first plutus script gap closed <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which
+fortunately hasn&#x27;t been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with
+the scientists on eclipse evasion.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-network-stack">P2P Network Stack<a class="hash-link" href="#p2p-network-stack" title="Direct link to heading">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer
+sharing.  We found and fixed an important bug recently introduced in one of the
+components of p2p networking stack (fortunately never released).  Together with
+a fix, we designed a unit test diffusion simulation as well as quickcheck
+property test (both could reproduce it). We also changed the code in a way that
+if such a bug is reintroduced in the future, it will be obvious to diagnose.
+For more see:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4067" target="_blank" rel="noopener noreferrer">ouroboros-network#4067</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4086" target="_blank" rel="noopener noreferrer">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where
+unlike what we see on the mainnet.  We found a possible misconfiguration of the
+cluster (caused by 0 TTL on domain names), which could be the direct cause of
+it.  We wrote a PR which rules out such misconfiguration.  We are awaiting on
+the next benchmarking results.  See more at:</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">ouroboros-network#4120</a>
+includes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started
+working toward integration these changes against the release branch of
+<code>cardano-node</code>.  Early next week we ought to be able to have an early version
+of <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">P2P - Single
+Relay</a>
+issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus">Consensus<a class="hash-link" href="#consensus" title="Direct link to heading">​</a></h3><p>We identified and fixed missing error reporting in consensus
+initialisation phase.  See more at
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">ouroboros-network#4015</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for
+node operators.  This includes updating severities of some of the traces as
+well as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">cardano-node#4563</a>.</li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4561" target="_blank" rel="noopener noreferrer">cardano-node#4561</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early
+implementation which will be reviewed and analysed in next weeks.  We started
+working on <code>cardano-node</code> integration.  We need
+<a href="https://github.com/input-output-hk/cardano-node/pull/4392" target="_blank" rel="noopener noreferrer">PR #4392</a> to be merged
+before such integration will be able to land in <code>cardano-node</code>, although this
+is <em>not blocking</em> us currently.  See more at:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">ouroboros-network#4019</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and
+Nick Frisby from the consensus team.  We discussed high lever design of the
+eclipse evasion scheme, which is important for the design and implementation of
+<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.
+A single <a href="https://github.com/input-output-hk/io-sim/pull/32" target="_blank" rel="noopener noreferrer">PR</a> which added
+a few missing instances of the <code>STM</code> monad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to
+accept contributions from 3rd parties).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril-cardano-integration">Mithril Cardano Integration<a class="hash-link" href="#mithril-cardano-integration" title="Direct link to heading">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate
+mithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>
+diffusion layer.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-performance-and-tracing">Performance &amp; Tracing Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>The new tracing system public release is getting closer, as we&#x27;re resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/56"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/58"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-12-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra
+with Cicero, and a new version of Spongix.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">OpenZiti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href="https://github.com/input-output-hk/bitte/compare/zt" target="_blank" rel="noopener noreferrer">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href="https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994" target="_blank" rel="noopener noreferrer">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,
+we&#x27;re making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte
+clusters utilizing a Ziti ZTNA network overlay to bridge the networking of
+the two environments and get IAM extension to Equinix machine for Nomad
+client onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,
+Controller, Edge Tunnel, and Router is now at [<a href="https://github.com/johnalotoski/openziti-bins" target="_blank" rel="noopener noreferrer">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with
+no issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and
+controller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul
+services</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-integrations">Cicero &amp; Tullia Integrations<a class="hash-link" href="#cicero--tullia-integrations" title="Direct link to heading">​</a></h3><ul><li>Added webhook for [<a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href="https://github.com/input-output-hk/cardano-addresses/pull/205" target="_blank" rel="noopener noreferrer">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href="https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946" target="_blank" rel="noopener noreferrer">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href="https://github.com/input-output-hk/abcirdc/pull/104" target="_blank" rel="noopener noreferrer">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href="https://github.com/input-output-hk/cicero/pull/66" target="_blank" rel="noopener noreferrer">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href="https://github.com/input-output-hk/plutus" target="_blank" rel="noopener noreferrer">plutus</a>]
+[<a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer">cardano-prelude</a>], and [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>].</li><li>Merged [<a href="https://github.com/input-output-hk/cardano-base/pull/323" target="_blank" rel="noopener noreferrer">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href="https://github.com/input-output-hk/cardano-ogmios/pull/5" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-explorer-app/pull/427" target="_blank" rel="noopener noreferrer">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3097" target="_blank" rel="noopener noreferrer">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-node/pull/4489" target="_blank" rel="noopener noreferrer">cardano-node-pull-4489</a>] to add Tullia and Cicero, including
+OS-agnostic jobs.</li><li>Opened [<a href="https://github.com/input-output-hk/ouroboros-network/pull/4108" target="_blank" rel="noopener noreferrer">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href="https://github.com/input-output-hk/plutus/pull/4918" target="_blank" rel="noopener noreferrer">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href="https://github.com/input-output-hk/abcirdc/pull/97" target="_blank" rel="noopener noreferrer">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-features">Cicero &amp; Tullia Features<a class="hash-link" href="#cicero--tullia-features" title="Direct link to heading">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>] build
+correctly.</li><li>Better tullia CUE lib default for tags [<a href="https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245" target="_blank" rel="noopener noreferrer">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>&#x27;s upstreams. This is now
+considered a public cache again, and without it some Cicero evaluations had
+to build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in
+JSON files.</li><li>Fixed running into kernel arg limit by reading tullia&#x27;s DAG from a file</li><li>Merged [<a href="https://github.com/input-output-hk/tullia/pull/9" target="_blank" rel="noopener noreferrer">tullia-pull-9</a>] that fixes several issues related to error reporting.
+and escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports
+the full HTTP binary cache protocol but still lacks comprehensive testing and
+some tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so
+Spongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugs">Bugs<a class="hash-link" href="#bugs" title="Direct link to heading">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status
+to get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for
+codependent actions.</li><li>Fixed tullia task order bug in [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href="https://github.com/input-output-hk/tullia/pull/7" target="_blank" rel="noopener noreferrer">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href="https://github.com/input-output-hk/bitte-cells/pull/40" target="_blank" rel="noopener noreferrer">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related
+to token rotation.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-27-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to
+meeting the <a href="https://github.com/input-output-hk/cardano-base/issues/315" target="_blank" rel="noopener noreferrer">acceptance criteria</a> in cardano-base,
+which lacks some editorial comments on the style of dQuandrant&#x27;s PR, the inclusion of one additional test, and
+we are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,
+but also progressing on the implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp-built-ins">SECP built-ins<a class="hash-link" href="#secp-built-ins" title="Direct link to heading">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/313" target="_blank" rel="noopener noreferrer">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href="https://github.com/cardano-foundation/CIPs/pull/250" target="_blank" rel="noopener noreferrer">PR 250</a> was merged</li><li>The unit-tests <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-21T00:00:00.000Z" itemprop="datePublished">October 21, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the
+new HeadV1 specification, completing a list the of identified gaps between
+specification and implementation while doing so. In the wake of the recent
+demonstration of SundaeSwap running their DEX in a Hydra Head, they met with
+them to capture feature ideas &amp; incorporate their feedback on the roadmap, as
+well as potential research avenues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href="https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022" target="_blank" rel="noopener noreferrer">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href="https://github.com/input-output-hk/hydra-poc/issues/538" target="_blank" rel="noopener noreferrer">#538</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-19-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-19T00:00:00.000Z" itemprop="datePublished">October 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-10-19 - 2022-11-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node&#x27;s mempool for the following information:</p><ul><li>Ask the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4554" target="_blank" rel="noopener noreferrer">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4568" target="_blank" rel="noopener noreferrer">Add ToJSON and FromJSON instances for Address</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4565" target="_blank" rel="noopener noreferrer">Export TxIns type alias from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4534" target="_blank" rel="noopener noreferrer">Export more generators from cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-submit-api">cardano-submit-api<a class="hash-link" href="#cardano-submit-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4566" target="_blank" rel="noopener noreferrer">Add tx_submit_fail_count metric</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4549" target="_blank" rel="noopener noreferrer">Upgrade to cabal-3.8.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4613" target="_blank" rel="noopener noreferrer">Update building-the-node-using-nix.md</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li>None</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-18-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for
+different aspects of the UTxO HD prototype: era transitions, mempool, and
+backing store. Thanks to these tests we were able to uncover a bug in the
+prototype. On the Genesis front, we benchmarked a different version of the
+ChainSync jumping prototype to try to improve its performance, but this did not
+result in any noticeable speedup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This
+uncovered a bug in the range-read implementation of the LMDB backing
+store.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that
+spreads out the ChainSync updates over a longer period of time. This did not
+result in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no
+conclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged
+the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">mempool
+rewrite</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="era-transition-property-tests">Era transition property tests<a class="hash-link" href="#era-transition-property-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4043" target="_blank" rel="noopener noreferrer">Cardano era transition property
+tests</a>,
+which are needed for making sure that the ledger tables get updated in the
+right way when we move from one era to the next. There are at the moment two
+important transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron
+state (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding
+the remaining ones.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="mempool-state-machine-tests">Mempool state-machine tests<a class="hash-link" href="#mempool-state-machine-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4044" target="_blank" rel="noopener noreferrer">state-machine property tests for the
+mempool</a>.
+The mempool is currently tested via pure property tests, and use a ledger
+state without tables. With the introduction of UTxO HD, testing the concurrent
+behavior of the mempool became of crucial importance (eg now we have to
+acquire locks to flush the backing store). In addition, we need to test a
+ledger state with tables. These needs led to the creation of a new set of
+property tests. In particular we aim to run parallel state-machine tests that
+exercise the mempool in a way similar to how the node would make use of it.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We started working on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">state-machine tests for the backing
+store</a> that UTxO
+HD uses. The property tests uncovered errors in the range-reads implementation
+of the LMDB backing store. To facilitate fixing this bug, we made
+<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">changes</a> to the Haskell
+LMDB bindings.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by
+using more capabilities, we implemented a way to spread out the ChainSync
+updates over a larger period instead of firing them all at the same time. This
+didn&#x27;t result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo
+peer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule
+out/confirm overhead by non-ChainSync (mainly BlockFetch) related components.
+This results in era-specific behavior (speed is like the prototype in Byron, but
+like the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg" width="654" height="459" class="img_ev3q"></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/57"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/59"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks &quot;past the opening of a Head&quot;. We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Last week we thought we were done with <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> in response.</li><li>Enhanced CI to publish test results <a href="https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results" target="_blank" rel="noopener noreferrer">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href="https://github.com/input-output-hk/hydra-poc/issues/200" target="_blank" rel="noopener noreferrer">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-14-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team is still primarily focused on addressing
+<a href="https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22" target="_blank" rel="noopener noreferrer">technical</a>
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/3" target="_blank" rel="noopener noreferrer">debt</a>.
+We now have the infrastructure for versioning our serialization schemes,
+which we continue to put into action.
+We have made first steps towards getting proper support for the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+(in particular, we&#x27;ve added nix builds and
+continuous integration support).
+We are wrapping up an investigation of the performance of a critical
+function used by the consensus layer for leader checks.
+Finally, we are improving the packaging and versioning of our code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of
+our code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that
+much of it should live in <code>cardano-ledger-core</code>.
+We continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3059" target="_blank" rel="noopener noreferrer">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.
+The inability to do this has caused us a lot difficulties,
+such as [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>].
+We are still in the process of switching to the versioned serialization scheme
+(such as [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3078" target="_blank" rel="noopener noreferrer">pull-3078</a>]),
+but the infrastructure was completed in [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3063" target="_blank" rel="noopener noreferrer">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/19" target="_blank" rel="noopener noreferrer">pull-19</a>]</li><li>A separate team is helping bring support for
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>
+to all the cardano-node repositories.
+We have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4.
+We have been helping out with this effort.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress-technical-debt">In-progress Technical Debt<a class="hash-link" href="#in-progress-technical-debt" title="Direct link to heading">​</a></h3><p>We also have several fairly large pull-requests in review
+that we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,
+we continue to remove <code>HasField</code> instances in place of using micro-lenses.
+The protocol parameters, in particular, are being worked on. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3045" target="_blank" rel="noopener noreferrer">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3062" target="_blank" rel="noopener noreferrer">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance
+of the TICKF transition. We have some improvements to the computatation
+as well. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>]</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-05-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-05T00:00:00.000Z" itemprop="datePublished">October 5, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on improving the
+performance of the ChainSync jumping logic, which is needed for Genesis. We also
+rewrote the implementation of the mempool in the UTxO HD prototype which solved
+the issues that prevented us from running system level benchmarks. Also on the
+UTxO HD front, we have an improved implementation of the sequence-of-differences
+(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for
+the UTxO HD feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the
+baseline performance. In particular, the prototype seems to benefit from the
+extra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This
+rewrite was required due to performance problems we observed when running the
+<a href="https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51" target="_blank" rel="noopener noreferrer">workbench</a>.
+These performance problems prevented us from running system level benchmarks.
+The rewrite solved these issues. After the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">UTxO-HD: mempool
+rewrite</a> PR is
+merged, we will contact the Benchmarking team so that they run the system
+level benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was
+integrated into the UTxO HD prototype. It is pending
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4036" target="_blank" rel="noopener noreferrer">review</a> and
+we also need to run replay and syncing benchmarks to confirm that this will
+deliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3944" target="_blank" rel="noopener noreferrer">The UTxO HD prototype
+inspection</a>
+resulted in a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4045" target="_blank" rel="noopener noreferrer">list of
+tests</a>
+needed for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="additional-information">Additional information<a class="hash-link" href="#additional-information" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,
+we tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg" width="654" height="459" class="img_ev3q"></p><p>Further work includes whether we can tune the prototype to better handle few
+capabilities, or to adapt the default number of capabilities (potentially just
+while syncing).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-04-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fast-restarts">Fast restarts<a class="hash-link" href="#fast-restarts" title="Direct link to heading">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>. This has been
+one of db-sync main objectives for this period. Restarts are now very fast,
+because db-sync deletes almost nothing from the db, it just replays the ledger rules until it
+reaches the tip of the db. The fix also improves reconnection speed, in cases where the node
+restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a
+deployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="property-based-testing">Property based testing<a class="hash-link" href="#property-based-testing" title="Direct link to heading">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1269" target="_blank" rel="noopener noreferrer">1269</a>. These tests use empty or
+almost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">RollForward Int</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RollBack BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StopDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StartDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RestartNode</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AssertBlockNo BlockNo</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block
+that fits on the current chain. These real commands are executed against db-sync using the mock
+chain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync
+which looks like this:</p><div class="language-haskell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-haskell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">  Model</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    { serverTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSyncTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsIsOn :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsHasSynced :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    }</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We handled a number of tech debt in
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1275" target="_blank" rel="noopener noreferrer">1275</a>
+This improves the code format of db-sync, deletes many queries that were never used and groups the
+others. This tech debt resolution not only improves the experience of working in db-sync, but can
+facilitate some of our other objectives, as it makes it very explicit which queries are used
+during syncing and which indexes are necessary.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="smash">Smash<a class="hash-link" href="#smash" title="Direct link to heading">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1276" target="_blank" rel="noopener noreferrer">1276</a>.
+The issue which is described in
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1270" target="_blank" rel="noopener noreferrer">1270</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-04-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-update">Node-Api-Cli Update<a class="hash-link" href="#node-api-cli-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-04---2022-10-18">2022-10-04 - 2022-10-18<a class="hash-link" href="#2022-10-04---2022-10-18" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The majority of the team&#x27;s time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4504" target="_blank" rel="noopener noreferrer">GHC 9.2.4 preparations</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h4><ul><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4491" target="_blank" rel="noopener noreferrer">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4501" target="_blank" rel="noopener noreferrer">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4526" target="_blank" rel="noopener noreferrer">Fix MacOS GHA CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.34.4</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/58"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/60"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-47">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22" target="_blank" rel="noopener noreferrer">sprint 47</a><a class="hash-link" href="#high-level-overview-of-sprint-47" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests">CI / Tests<a class="hash-link" href="#ci--tests" title="Direct link to heading">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>
+function used for testing codecs which triggered out of memory manager (OOM) on
+some platforms (<a href="https://github.com/input-output-hk/typed-protocols/pull/43" target="_blank" rel="noopener noreferrer">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI
+<code>timeouts</code> (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680" target="_blank" rel="noopener noreferrer">connection-manager-fix</a>).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="keepalive-client">KeepAlive client<a class="hash-link" href="#keepalive-client" title="Direct link to heading">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed
+by Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>), <a href="https://github.com/input-output-hk/ouroboros-network/issues/4689" target="_blank" rel="noopener noreferrer">ouroboros-network#4689</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois">Galois<a class="hash-link" href="#galois" title="Direct link to heading">​</a></h3><p>We merged two large PRs prepared by <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4660" target="_blank" rel="noopener noreferrer">inspect <code>error</code> call sites</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4663" target="_blank" rel="noopener noreferrer">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance-cnsa">Cardano Network Service Assurance (CNSA)<a class="hash-link" href="#cardano-network-service-assurance-cnsa" title="Direct link to heading">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new &quot;CSNA analysis&quot; that provides, for each sampler node, the
+block download throughput in bytes over time.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-chap-release">New CHaP Release<a class="hash-link" href="#new-chap-release" title="Direct link to heading">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/547" target="_blank" rel="noopener noreferrer">chap#547</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests-1">CI / Tests<a class="hash-link" href="#ci--tests-1" title="Direct link to heading">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of
+<code>IOSim</code> traces without retaining them, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696" target="_blank" rel="noopener noreferrer">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test
+artefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for
+<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to
+run concurrently, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/4623" target="_blank" rel="noopener noreferrer">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4694" target="_blank" rel="noopener noreferrer">inbound-governor: connection leak</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4607" target="_blank" rel="noopener noreferrer">connection-manager: assertion failure</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4605" target="_blank" rel="noopener noreferrer">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production
+code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release-process">Release Process<a class="hash-link" href="#release-process" title="Direct link to heading">​</a></h3><p>We updated our release process &amp; associated scripts, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4705" target="_blank" rel="noopener noreferrer">ouroboros-network#4705</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href="https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href="https://github.com/input-output-hk/cardano-parts/pull/17" target="_blank" rel="noopener noreferrer">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href="https://github.com/input-output-hk/cardano-playground/pull/4" target="_blank" rel="noopener noreferrer">cardano-playground-pull-4</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-25-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-25T00:00:00.000Z" itemprop="datePublished">October 25, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2342.0" target="_blank" rel="noopener noreferrer"><code>2342.0</code></a>. This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1133" target="_blank" rel="noopener noreferrer">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1184" target="_blank" rel="noopener noreferrer">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href="https://github.com/input-output-hk/mithril/issues/1306" target="_blank" rel="noopener noreferrer">#1306</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-24-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-24T00:00:00.000Z" itemprop="datePublished">October 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-10-11 - 2023-10-24</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/394" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/393" target="_blank" rel="noopener noreferrer">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/390" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/389" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/380" target="_blank" rel="noopener noreferrer">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/379" target="_blank" rel="noopener noreferrer">drep registration-certificate: add a golden test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/378" target="_blank" rel="noopener noreferrer">Disambiguate treasury withdrawal flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/375" target="_blank" rel="noopener noreferrer">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/374" target="_blank" rel="noopener noreferrer">Add <code>conway governance action view</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/372" target="_blank" rel="noopener noreferrer">Ch/clearer anchor flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/371" target="_blank" rel="noopener noreferrer">Command argument types for <code>transaction</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/370" target="_blank" rel="noopener noreferrer">Remove eras&#x27; constitution-hash</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/368" target="_blank" rel="noopener noreferrer">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/367" target="_blank" rel="noopener noreferrer">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/366" target="_blank" rel="noopener noreferrer">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/365" target="_blank" rel="noopener noreferrer"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/364" target="_blank" rel="noopener noreferrer">Command argument types for governance key commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/363" target="_blank" rel="noopener noreferrer">Add test of voting using a cc hot key</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/338" target="_blank" rel="noopener noreferrer">Add Show instance for FoldBlocksError</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/336" target="_blank" rel="noopener noreferrer">Upgrade typed-protocols to 1.1.1</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/332" target="_blank" rel="noopener noreferrer">Improved validity range handling</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/330" target="_blank" rel="noopener noreferrer">Delete <code>AlonzoEraOnly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/329" target="_blank" rel="noopener noreferrer">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/327" target="_blank" rel="noopener noreferrer">DRep extended key: add CastVerificationKeyRole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/326" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/325" target="_blank" rel="noopener noreferrer">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/324" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/323" target="_blank" rel="noopener noreferrer">Support Plutus V1 in Conway</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/322" target="_blank" rel="noopener noreferrer">Parameterize GovernanceAction on era </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/320" target="_blank" rel="noopener noreferrer">Support DRep extended keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/317" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/314" target="_blank" rel="noopener noreferrer">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/313" target="_blank" rel="noopener noreferrer">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/312" target="_blank" rel="noopener noreferrer">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5515" target="_blank" rel="noopener noreferrer">Factor out file creation for SPO</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5504" target="_blank" rel="noopener noreferrer">Tracer documentation generation enhacements </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-20-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-20T00:00:00.000Z" itemprop="datePublished">October 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API&#x27;s submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.
+This improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.
+This effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href="https://github.com/input-output-hk/hydra/pull/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li><a href="https://github.com/input-output-hk/hydra/issues/1120" target="_blank" rel="noopener noreferrer">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href="https://github.com/input-output-hk/hydra/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href="https://github.com/input-output-hk/hydra/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href="https://github.com/input-output-hk/hydra/pull/1121" target="_blank" rel="noopener noreferrer">#1121</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/5"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/7"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-30-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-30T00:00:00.000Z" itemprop="datePublished">September 30, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have continued focusing nearly entirely on addressing technical debt.
+A lot of design work has begun for the next ledger era,
+but we do not yet have anything concrete to share.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-issues-completed">Technical debt issues completed<a class="hash-link" href="#technical-debt-issues-completed" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/1676" target="_blank" rel="noopener noreferrer">issue-1676</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>] We have finally removed the ledger dependency on the
+<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency
+that we did not want to maintain. It was a bit difficult to remove, and we had
+to coordinate removing it from cardano-base.
+A lot ended up going into <a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>, due to the coordination effort, and we ended
+up updating Plutus as well.
+This means that we&#x27;ve now also made a lot of progress on the problematic cost model serialization
+issues described in <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+In particular, after we resolve <a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>, we will not have to wait an epoch before
+releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3046" target="_blank" rel="noopener noreferrer">issue-3046</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3055" target="_blank" rel="noopener noreferrer">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3047" target="_blank" rel="noopener noreferrer">issue-3047</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3054" target="_blank" rel="noopener noreferrer">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3044" target="_blank" rel="noopener noreferrer">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates
+were adding approximately 20 minutes to our compile time!</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2932" target="_blank" rel="noopener noreferrer">issue-2932</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3036" target="_blank" rel="noopener noreferrer">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we
+have added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.
+Most classes defined in the era should go in this new module.
+We also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>
+modules from each era.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-in-progress">Technical debt in progress<a class="hash-link" href="#technical-debt-in-progress" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3034" target="_blank" rel="noopener noreferrer">issue-3034</a>][<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>][<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where
+all the time is being spent on executing the <code>TICKF</code> transition.
+The consolidation of the per-stake-credential stake distribution to the per-stake-pool
+distribution does seem to account for a large amount of time (near a second as written, which we
+have down to about half a second with some optimizations),
+but this does not account for everything.
+Applying the reward update may also be a big contributing factor.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3033" target="_blank" rel="noopener noreferrer">pull-3033</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3038" target="_blank" rel="noopener noreferrer">pull-3038</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3041" target="_blank" rel="noopener noreferrer">pull-3041</a>] A separate team is working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>
+do not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger
+serializers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-27-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See
+<a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in
+progress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3980" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3905" target="_blank" rel="noopener noreferrer">issue input-output-hk/cardano-node#3905</a> in
+the simulation testing of diffusion
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4004" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.
+When deploying we found an issue in the
+<a href="https://github.com/input-output-hk/cardano-node/issues/3752" target="_blank" rel="noopener noreferrer"><code>RTView</code></a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-consensus">Ouroboros Consensus<a class="hash-link" href="#ouroboros-consensus" title="Direct link to heading">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during
+intiialisation.  This was fixed in
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#4015</a>
+As part of this pull request we also changed that all exceptions rethrown by
+the connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="some-older-items-which-were-not-announced">Some older items, which were not announced<a class="hash-link" href="#some-older-items-which-were-not-announced" title="Direct link to heading">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options
+where not set for sockets passed through socket activation).
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#3979</a>
+This fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,
+<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,
+<code>traceSocketPathConnect</code> and <code>stateDir</code> options.
+<a href="https://github.com/input-output-hk/cardano-node/pull/4196" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2797" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2797</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2650" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2650</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3436" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#3436</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2588" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2588</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2587" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2587</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2586" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href="https://github.com/input-output-hk/io-sim/pull/24" target="_blank" rel="noopener noreferrer">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href="https://github.com/input-output-hk/io-sim/pull/25" target="_blank" rel="noopener noreferrer">PR input-output-hk/io-sim#25</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:
+<a href="https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem" target="_blank" rel="noopener noreferrer">coot/typed-protocols-rewrite-StateToken-problem</a>.
+That&#x27;s too be resolved in order to push forward review of the redesign in
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:
+<a href="https://github.com/input-output-hk/typed-protocols/pull/11" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="input-endorsers-simulation">Input Endorsers Simulation<a class="hash-link" href="#input-endorsers-simulation" title="Direct link to heading">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU
+(block validation). This is interesting to check that we&#x27;re not overloading
+the CPU block validation capacity, or network link capacity. Or alternatively
+to observe the behaviour in an overload situation if we set the block
+generation rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of
+links are being used at any one time, and shows that once the system &quot;warms
+up&quot; and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple
+charts, titles etc on screen at once and scale them to whatever screen or
+video resolution we like without having to tweak numbers (this example is
+scaled to fit 1080HD video resolution).</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-20-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>We proposed a fix for the performance degradation observed when running
+distributed multi-node benchmarks in the UTxO HD feature branch. While this
+fixed the problems observed when running local benchmarks, it broke the
+<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to
+start redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of
+diff-sequences required by the UTxO HD feature based on the idea of
+anti-diffs. This alternative implementation is close to being merged, and the
+next step is to integrate this to the UTxO HD branch, so that we can run
+ad-hoc replaying and syncing from scratch benchmarks and compare these with
+the baseline. The micro-benchmarks we elaborated for the alternative
+implementation show speedups of up to 4x, so we are optimistic about the
+performance of replaying and syncing from scratch benchmarks, however it is
+important to notice that <em>due to the nature of UTxO HD</em> we will still be
+slower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for
+review.</li><li>We implemented a prototype for the happy path of Genesis&#x27; ChainSync Jumping
+(CSJ). The prototype is slower than the baseline, however it is not the latest
+version of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031" target="_blank" rel="noopener noreferrer">stopped</a> since
+priorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pr-4014</a>. To this end, we made use of a modified version of our
+<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano
+mainnet chain, and we can see that block tick and application take
+substantially longer at epoch boundaries, although there are a couple of slots
+during an epoch in which these computations take more than normal. We notified
+the ledger team about these findings. We will use this modified version of
+<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in
+performance observed in the benchmarks. We run the <code>make forge-stress</code>
+benchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn&#x27;t make a notable difference in the outcome
+(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction
+validation which is a violation of the <code>LocalTxSubmission</code> protocol
+contract and therefore if we continued on that route, the impact would
+have been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal
+state was buggy and under certain circumstances it seemed to lock.
+Reverting the mempool internal state to be stored in a <code>TVar</code> seems to
+solve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones
+from the baseline.</p></li></ul></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/3997" target="_blank" rel="noopener noreferrer">The anti-diff prototype (PR
+#3997)</a> has
+been reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4010" target="_blank" rel="noopener noreferrer">issue
+#4010</a>)
+to integrate the anti-diff prototype in the various <code>consensus</code> packages
+was created. A first version of the integration exists, and all tests
+pass. A next step is to get some indication of the &quot;real&quot; performance gain
+by profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync
+Jumping (CSJ) prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3987" target="_blank" rel="noopener noreferrer">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)
+number of servers periodically while syncing. These servers are offered
+jump requests via the ChainSync protocol (hence the name), which they can
+accept or decline. If a peer declines, the Genesis rule allows us to
+determine whether a node actually has a better chain.</p></li><li><p>The &quot;happy path&quot; is when no peer declines a jump. We want this to have
+close to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to
+test in various configurations (number of peers, latency, bandwidth) to
+tune the performance of ChainSync jumping, i.e. how complicated our logic
+of choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to
+<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg" width="654" height="459" class="img_ev3q"></p><p>It is slower by about ~30%, but it is not the latest version of the
+prototype, and the jump interval is very small, making CSJ more of a
+bottleneck.</p></li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3990" target="_blank" rel="noopener noreferrer">PR 3990</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-19-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-19T00:00:00.000Z" itemprop="datePublished">September 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tag">New Tag<a class="hash-link" href="#new-tag" title="Direct link to heading">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last
+release 13.0.4. It is currently under testing.
+The Changelog is
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305" target="_blank" rel="noopener noreferrer">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn&#x27;t include a total collateral field.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1248" target="_blank" rel="noopener noreferrer">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1247" target="_blank" rel="noopener noreferrer">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but
+could result in the wrong CBOR encoding being inserted.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1217" target="_blank" rel="noopener noreferrer">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs
+for different networks, these are directly fetched from the cardano world.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1254" target="_blank" rel="noopener noreferrer">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1260" target="_blank" rel="noopener noreferrer">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made the db-sync <a href="https://github.com/orgs/input-output-hk/projects/52/views/1" target="_blank" rel="noopener noreferrer">board public</a>, so
+everyone can have access on the issues we prioritise.
+We also added new tasks to the board, some of them could be approachable to newcomers or people who
+want to contribute.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-tech-debt-and-new-features">Progress on tech debt and new features<a class="hash-link" href="#progress-on-tech-debt-and-new-features" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1223" target="_blank" rel="noopener noreferrer">1223</a> was merged, which removes the
+foreign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1250" target="_blank" rel="noopener noreferrer">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>.
+This allows db-sync to restart much faster, without the need to delete data and reinsert them. In
+the future it can also facilitate migrations in cases where the ledger snapshots have a breaking
+change, without the need to resync everything from genesis.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-16-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-16T00:00:00.000Z" itemprop="datePublished">September 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3032" target="_blank" rel="noopener noreferrer">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of
+confusion), and added some related support to the fledgling ledger API.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3016" target="_blank" rel="noopener noreferrer">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3017" target="_blank" rel="noopener noreferrer">3017</a>.</li><li>We removed code duplication related to the input data hashes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3018" target="_blank" rel="noopener noreferrer">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our
+CI to time out.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3020" target="_blank" rel="noopener noreferrer">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3023" target="_blank" rel="noopener noreferrer">3023</a>,
+<a href="https://github.com/input-output-hk/cardano-ledger/pull/3031" target="_blank" rel="noopener noreferrer">3031</a>,
+and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3028" target="_blank" rel="noopener noreferrer">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3024" target="_blank" rel="noopener noreferrer">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific
+choice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3027" target="_blank" rel="noopener noreferrer">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric
+types that will compose better in the future and which simplifies the constraints.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3029" target="_blank" rel="noopener noreferrer">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a
+given transaction. This is a much needed cleanup to prevent future mistakes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3019" target="_blank" rel="noopener noreferrer">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to
+fail in CI.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major
+protocol version, and also address a
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">problem</a>
+that we current have evolving the cost models.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3030" target="_blank" rel="noopener noreferrer">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely
+the lack of some serialization instances.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3022" target="_blank" rel="noopener noreferrer">3022</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/59"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/61"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-01-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been
+focused on two main things: a new ledger era and technical debt.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-minimal-ledger-era">New minimal ledger era<a class="hash-link" href="#new-minimal-ledger-era" title="Direct link to heading">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical
+to the <code>babbage</code> era. This has been the first time that we have been able to see
+what a minimal ledger era looks like. We have finished this task, modulo any
+integration issues that might come up. The only thing that the <code>conway</code> era
+does differently from the <code>babbage</code> era is provide support for rotating
+the master keys using the hardfork combinator&#x27;s state translation.
+We may end up adding features to the <code>conway</code> era, but it is a nice exercise
+seeing what it looks like to get a minimal ledger era supported in all the
+downstream components.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="addressing-technical-debt">Addressing technical debt<a class="hash-link" href="#addressing-technical-debt" title="Direct link to heading">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the
+repository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.
+With hindsight on our side, we now have something much more organized and
+easier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more
+uniform, avoid certain confusions that plagued us, and are clearer in where
+they are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you
+do not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of
+values that can be minted in a transaction no longer allow for Lovelace
+in the type, and some functions which used to handle both timelock scripts
+and plutus script now correctly enoforce at the type level that only one of
+them can be used.</li><li>We made our generators so that they now produce a much richer set of
+valid serializations. There is room within CBOR to serialize the same
+data structure in multiple ways, and it is helpful to have the generators
+use a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-31-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-08-31T00:00:00.000Z" itemprop="datePublished">August 31, 2022</time> · <!-- -->9 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A
+possible bug was identified. Work is ongoing to make sure the property-tests
+cover all the relevant cases.</li><li>We implemented and benchmarked the &quot;anti-diff&quot; prototype to speed up the UTxO
+HD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across
+several scenarios. Note that: <a href="https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html" target="_blank" rel="noopener noreferrer">&quot;Data reported by <code>tasty-bench</code> is only of
+indicative and comparative significance.&quot;</a>.
+We are investigating additional performance improvements. The &quot;anti-diff&quot;
+prototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and
+<code>ChainSync</code> jumping optimization.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3962" target="_blank" rel="noopener noreferrer">Issue #3963</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">PR
+#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which
+data should be changed in the Conway era. As a result, a new technical debt
+issue was raised, which does not block the integration of the Conway era
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3976" target="_blank" rel="noopener noreferrer">Issue #3976</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3954" target="_blank" rel="noopener noreferrer">Issue #3954</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests" target="_blank" rel="noopener noreferrer">branch</a>: The functionality of a
+backing store, which is the interface to the on-disk part of ledger state in
+UTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some
+functionalities remain untested, e.g., reads of ranges of keys. As such, we
+have implemented <code>quickcheck-state-machine</code> tests that exercise backing stores
+directly. The tests are reusable for different backing store implementations
+because the tests are implementation-agnostic: Any backing store that conforms
+to the backing store interface can be plugged into the tests. Work is still
+ongoing to label/monitor the tests, such that we can verify that interesting
+cases are being tested. Furthermore, a possible bug has been identified in the
+LMDB backing store with respect to range reads, though the bug has not been
+resolved yet.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3946" target="_blank" rel="noopener noreferrer">Issue #3946</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs" target="_blank" rel="noopener noreferrer">branch</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3882" target="_blank" rel="noopener noreferrer">PR #3882</a>: The
+&quot;anti-diff&quot; prototype proposes an alternative approach to keeping track of
+sequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences
+are a component of the in-memory parts of the ledger state in UTxO-HD. Since
+the consensus code often requires the cumulative diff of a sequence of diffs,
+the current implementation &quot;caches&quot; cumulative diffs of each subtree in the
+diff sequence. This caching allows relatively fast reconstruction of the total
+cumulative diff, but this caching proved to incur a non-negligible cost: when
+we manipulate diff sequences through splits and appends, we force re-computing
+a logarithmic number of caches. This is problematic, since we often split and
+append in consensus: we split when we flush diffs to a backing store or when
+we roll back blocks, and we append when pushing blocks. The new approach
+should reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the &quot;anti-diff&quot; prototype: we
+first generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or
+<code>Rollback</code>) through a simulation, after which we measure the performance of
+applying the commands to a diff sequence. In this context, <code>Forward</code> means
+forwarding of values through a diff, whereas <code>Rollback</code> means switching to
+a different fork by rolling back diffs/blocks and pushing new ones.
+Moreover, we compare the performance for the two implementations: the
+&quot;legacy&quot; approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the
+benchmark&#x27;s configuration to obtain more definitive results. After a
+discussion with @dcoutts and the consensus team about this configuration
+(e.g., number of commands generated, choice of the security parameter <code>k</code>),
+the benchmarks should now be closer to the realistic setting. The following
+configuration specifies the default configuration that is used in the
+benchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-read-results">How to read results<a class="hash-link" href="#how-to-read-results" title="Direct link to heading">​</a></h3><p>Note: this section uses documentation from the
+<a href="https://hackage.haskell.org/package/tasty-bench" target="_blank" rel="noopener noreferrer">tasty-bench</a> package to
+explain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AntiDiff:                               OK (18.27s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">LegacyDiff:                             OK (32.73s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff
+prototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),
+its predicted mean CPU time was <code>2.527</code> seconds and means of individual
+samples do not often diverge from it further than <code>± 47</code> milliseconds
+(double standard deviation). We also configure the RTS to collect GC
+statistics, which enables <code>tasty-bench</code> to estimate and report memory usage.
+This data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,
+<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first
+benchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a
+total of <code>544 MB</code> of memory were copied, and that the peak memory in usage
+was <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for
+both the anti-diff and legacy approaches: In this case, the mean CPU time
+for the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy
+approach. Conversely, the mean CPU time for the legacy approach is
+<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will
+call <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to
+noise, randomness, the specific configuration parameters, and the whims
+of statistics. Data reported by <code>tasty-bench</code> is only of indicative and
+comparative significance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="results">Results<a class="hash-link" href="#results" title="Direct link to heading">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and
+legacy approaches 5 times. We run the benchmarks 5 times to get an indication
+of whether the results are similar across multiple runs. Furthermore, we
+calculate the accompanying <em>ranges</em> (if applicable) of improvement factors and
+speedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for
+the anti-diff approach compared to the legacy approach.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="default-configuration">Default configuration<a class="hash-link" href="#default-configuration" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks">No rollbacks<a class="hash-link" href="#no-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="only-small-rollbacks">Only small rollbacks<a class="hash-link" href="#only-small-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks-larger-flushes-every-100-pushes">No rollbacks, larger flushes (every 100 pushes)<a class="hash-link" href="#no-rollbacks-larger-flushes-every-100-pushes" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and
+the ChainSync Jumping optimization. In particular, this includes a proof
+sketch that the latter preserves liveness and safety in all cases (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3964" target="_blank" rel="noopener noreferrer">Issue
+3964</a>).<ul><li>@nfrisby&#x27;s main realization during this sprint was that he had been
+focusing so far on the case where the selected chain is an extension of
+the intersection of our peers&#x27; ChainSync candidates.</li><li>This is the main case, ie an &quot;absorbing&quot; state, but it&#x27;s not the only
+case.</li><li>The new proof sketch begins by case splitting on that predicate, and
+that made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the &quot;happy path&quot; <code>ChainSync</code> Jumping prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3960" target="_blank" rel="noopener noreferrer">Issue
+3960</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..
+Nightly CI runs have far more lax time constraints, which gives the option to
+run significantly more property tests than in our regular CI. To this end, we
+merged a PR to easily adapt the number of tests globally (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3947" target="_blank" rel="noopener noreferrer">PR
+#3947</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-08-12T00:00:00.000Z" itemprop="datePublished">August 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The networking team took an active part in the project iteration (PI) planning
+session, see cardano-node <a href="https://github.com/orgs/input-output-hk/projects/39" target="_blank" rel="noopener noreferrer">backlog</a> for detailed
+outcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/3859" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3859</a> which
+sets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3852" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3852</a>.
+The above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and
+identified some deployment hiccups.  We identified some bugs in the RT view
+which were registered by the maintainers.
+<a href="https://github.com/input-output-hk/ouroboros-network-ops/pull/4" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3921" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3922" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to
+identify and fix a bug in the simulator.  The simulation contains 50 nodes.
+Dashed lines indicate and established connection, while solid lines indicate
+a TCP connection with fully open TCP window.</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/60"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-18-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330" target="_blank" rel="noopener noreferrer">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href="https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069" target="_blank" rel="noopener noreferrer">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">422</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> finished his cycle as release engineer. Node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">4251</a>).</li><li>We prepared the integration of <a href="https://github.com/input-output-hk/cardano-node/pull/5502" target="_blank" rel="noopener noreferrer">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">issue</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-18-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href="https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq" target="_blank" rel="noopener noreferrer">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1298" target="_blank" rel="noopener noreferrer">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href="https://github.com/input-output-hk/mithril/issues/1292" target="_blank" rel="noopener noreferrer">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-15-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-15T00:00:00.000Z" itemprop="datePublished">October 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-46">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22" target="_blank" rel="noopener noreferrer">sprint 46</a><a class="hash-link" href="#high-level-overview-of-sprint-46" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We diagnosed the performance regression of the new design. The work on
+<code>typed-protocols</code> will be postponed.  For more details see the
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4691" target="_blank" rel="noopener noreferrer">PR</a> which updates the <code>demo-ping-pong</code> and
+<code>demo-chain-sync</code> applications.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We made progress in review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4644" target="_blank" rel="noopener noreferrer">ouroboros-network#4644</a>, which simplifies the
+peer sharing and fixes the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4642" target="_blank" rel="noopener noreferrer">ouroboros-network#4642</a> issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We reviewed the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a> PR which inspects all the uses of
+<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team&#x27;s primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project&#x27;s structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to
+testing. For this reason there is a very little amount features that are reported this
+time aorund. Notable Conway related changes are a specialized ledger query for getting
+Constitutional Committee state and prevention of submitting proposal procedures that have
+no valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip
+serialization. As a result of this extra testing a bug in Conway Genesis serialization
+was eliminated.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3768" target="_blank" rel="noopener noreferrer">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3781" target="_blank" rel="noopener noreferrer">pull-3781</a> - CommitteeState query</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-and-releasing">Integration and releasing<a class="hash-link" href="#integration-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3774" target="_blank" rel="noopener noreferrer">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3770" target="_blank" rel="noopener noreferrer">pull-3770</a> - cabal.project: Bump index states</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3778" target="_blank" rel="noopener noreferrer">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3769" target="_blank" rel="noopener noreferrer">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3783" target="_blank" rel="noopener noreferrer">pull-3783</a> - Update TranslationInstance.hs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3775" target="_blank" rel="noopener noreferrer">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3793" target="_blank" rel="noopener noreferrer">pull-3793</a> - Fix sums with negative RHS.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/6"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/8"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href="https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href="https://github.com/input-output-hk/cardano-parts/pull/16" target="_blank" rel="noopener noreferrer">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-parts/pull/15" target="_blank" rel="noopener noreferrer">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-playground/pull/3" target="_blank" rel="noopener noreferrer">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href="https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-11-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-11T00:00:00.000Z" itemprop="datePublished">October 11, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a>, the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href="https://github.com/input-output-hk/mithril/issues/1282" target="_blank" rel="noopener noreferrer">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-10-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-10T00:00:00.000Z" itemprop="datePublished">October 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-09-27 - 2023-10-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/347" target="_blank" rel="noopener noreferrer">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/344" target="_blank" rel="noopener noreferrer">Rename create-new-committee into update-committee</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/341" target="_blank" rel="noopener noreferrer">New version cardano-cli-8.12.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/338" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/337" target="_blank" rel="noopener noreferrer">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/330" target="_blank" rel="noopener noreferrer">Drep certification registration: add parameters for anchor</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/329" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/327" target="_blank" rel="noopener noreferrer">Move files that are not golden files into <code>input</code> directory</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/324" target="_blank" rel="noopener noreferrer">Update to cardano-api-8.24</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/323" target="_blank" rel="noopener noreferrer">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/322" target="_blank" rel="noopener noreferrer">create-poll, answer-poll, verify-poll: move to &#x27;babbage governance&#x27; block</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/320" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/319" target="_blank" rel="noopener noreferrer">Make <code>transaction view</code> emit JSON</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/318" target="_blank" rel="noopener noreferrer">Tidy up query command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/317" target="_blank" rel="noopener noreferrer">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/316" target="_blank" rel="noopener noreferrer">Add DRep Retirement Certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/310" target="_blank" rel="noopener noreferrer">Update to cardano api 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/309" target="_blank" rel="noopener noreferrer">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/307" target="_blank" rel="noopener noreferrer">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/306" target="_blank" rel="noopener noreferrer">Add certs to txbody of Conway transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/305" target="_blank" rel="noopener noreferrer">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/304" target="_blank" rel="noopener noreferrer">Add BabbageEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/303" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.2.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/300" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/299" target="_blank" rel="noopener noreferrer">Reduce constraint usage with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/297" target="_blank" rel="noopener noreferrer">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/296" target="_blank" rel="noopener noreferrer">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/294" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/293" target="_blank" rel="noopener noreferrer">Require conway onwards for voting</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/292" target="_blank" rel="noopener noreferrer">Add witness committee cold key</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/291" target="_blank" rel="noopener noreferrer">Fix CHaP failure due to haddock issue</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/290" target="_blank" rel="noopener noreferrer">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/289" target="_blank" rel="noopener noreferrer">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/288" target="_blank" rel="noopener noreferrer">Release 8.24.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/287" target="_blank" rel="noopener noreferrer">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/286" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/284" target="_blank" rel="noopener noreferrer">conway drep registration: expose ledger anchor parameter</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/282" target="_blank" rel="noopener noreferrer">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/281" target="_blank" rel="noopener noreferrer">Rename eon functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/280" target="_blank" rel="noopener noreferrer">New <code>AnyEraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/279" target="_blank" rel="noopener noreferrer">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/278" target="_blank" rel="noopener noreferrer">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/277" target="_blank" rel="noopener noreferrer">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/276" target="_blank" rel="noopener noreferrer">Release 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/275" target="_blank" rel="noopener noreferrer">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5497" target="_blank" rel="noopener noreferrer">bump cardano-api to 8.25.2</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5491" target="_blank" rel="noopener noreferrer">Remove unused code in cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-06-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Release <a href="https://github.com/input-output-hk/hydra/releases/tag/0.13.0" target="_blank" rel="noopener noreferrer">0.13.0</a></li><li>Published vulnerability reports <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Merged network resilience work part I <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href="https://github.com/input-output-hk/hydra/pull/1095" target="_blank" rel="noopener noreferrer">#1095</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete Aiken commit validator script <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete Kupo integration <a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Brick upgrade on TUI <a href="https://github.com/input-output-hk/hydra/pull/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-06-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We&#x27;ve developed strategies for future benchmarks of PlutusV3 and UTxO-HD&#x27;s on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the
+performance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results
+show all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The
+feedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Benchmarking UTxO-HD&#x27;s on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,
+we&#x27;d like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service
+receiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is
+more performance critical, the receiving service must still minimize its resource footprint. Moreover, it can
+generate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster&#x27;s topology. We repeated
+the same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/7"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/9"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-04-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.
+We also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/392" target="_blank" rel="noopener noreferrer">392</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/366" target="_blank" rel="noopener noreferrer">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/384" target="_blank" rel="noopener noreferrer">384</a>).</li><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/369" target="_blank" rel="noopener noreferrer">369</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1185" target="_blank" rel="noopener noreferrer">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href="https://github.com/input-output-hk/mithril/issues/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href="https://github.com/input-output-hk/mithril/issues/1265" target="_blank" rel="noopener noreferrer">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href="https://github.com/input-output-hk/mithril/issues/1277" target="_blank" rel="noopener noreferrer">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1274" target="_blank" rel="noopener noreferrer">#1274</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-02-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-02T00:00:00.000Z" itemprop="datePublished">October 2, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-45">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22" target="_blank" rel="noopener noreferrer">sprint 45</a><a class="hash-link" href="#high-level-overview-of-sprint-45" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we
+started investigating where it comes from.  Currently, we see that
+<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running
+in isolation with a simple <code>ping-pong</code> protocol, so the regression might be in
+the new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>
+See <a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosimpor">IOSimPOR<a class="hash-link" href="#iosimpor" title="Direct link to heading">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We&#x27;d like to thank Prof. John Hughes
+(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the
+debugging similar problems in the future easier.</p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Technical Details on IOSim refactoring</summary><div><div class="collapsibleContent_i85q">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we&#x27;d need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim">IOSim<a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of
+the public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is
+a work in progress, <a href="https://github.com/input-output-hk/io-sim/issues/114" target="_blank" rel="noopener noreferrer">io-sim#114</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-newtork-service-assurance">Cardano Newtork Service Assurance<a class="hash-link" href="#cardano-newtork-service-assurance" title="Direct link to heading">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation
+was updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were
+made.</li><li>Galois has started the design for adding a CNSA analysis for &quot;fetched bytes
+over time while node is syncing&quot;.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, we&#x27;ve seen increase in P2P adoption.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png" width="2668" height="1576" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png" width="2674" height="1580" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the
+PR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4676" target="_blank" rel="noopener noreferrer">ouroboros-network#4676</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and testing the
+performance analysis tool</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of
+programs with local environments via synchronous channels</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability
+network layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on
+how to handle security vulnerability within Hydra, and in particular how to
+handle so-called &quot;Silent fixes&quot;.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Adr/network reliability <a href="https://github.com/input-output-hk/hydra/pull/1082" target="_blank" rel="noopener noreferrer">#1082</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/page/8"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/page/10"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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diff --git a/pdf/network/2022-11-24-UCL.pdf b/pdf/network/2022-11-24-UCL.pdf
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Node API &amp; CLI Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-quarterly-update">Node-Api-Cli Quarterly Update<a class="hash-link" href="#node-api-cli-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0</li><li>Major clean up of stale iusses + PRs.</li><li>Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs</li><li>cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.</li><li>cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.</li><li>General documentation updates and improvements</li><li>Addition of tx-mempool command which allows users to:<ul><li>Query the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul></li><li>Initial refactoring of cardano-testnet</li></ul><p>Next quarter</p><ul><li>cardano-api<ul><li>Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.</li></ul></li><li>cardano-testnet<ul><li>Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - <a href="https://github.com/input-output-hk/cardano-node/issues/4598" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/issues/4598</a></li></ul></li><li>Serenity<ul><li>Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.</li></ul></li><li>General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/cli-api-quarterly">cli-api-quarterly</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-07-nod-api-cli.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2022-11-07-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#node-api-cli-quarterly-update" class="table-of-contents__link toc-highlight">Node-Api-Cli Quarterly Update</a></li><li><a href="#2022-09---2022-11-04" class="table-of-contents__link toc-highlight">2022-09 - 2022-11-04</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>We finished a minimal ledger era capable of master key rotation.
+This will be re-purposed our upcoming work.</li><li>We have the humble beginnings of a proper ledger API.</li><li>We improved the problematic cost model serialization
+(recall the song and dance about updating the cost model one epoch after the hard fork).</li><li>We have added benchmarks for problematic areas.</li><li>Massive repository restructure and cleanup.<ul><li>Unified and consistent variable name schemes (not completely finished, but nearly there).</li><li>Massive reduction in type constraints, which causes a lot of developer friction,
+in our code and also downstream.</li><li>More organized module structures.</li><li>Improved generators for our property tests.</li><li>We removed our dependency on cardano-prelude.</li></ul></li><li>The formal ledger model has come a long way.<ul><li>We created a fork of Agda that provides some meta-programming support for the ledger rules.</li><li>We have a large amount of the basic UTxO support in the model.</li><li>We can generate a good looking PDF from the model.</li><li>We can produce Haskell from the model.</li><li>We have a nice finite set theory library that we can use for many of the ledger rules.</li><li>We have nix support for the model.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h2><ul><li>Individual tracking of deposits. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>]</li><li>Versioned CBOR encoders/decoders. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>]</li><li>New ledger era transaction body (and the surround work associated with it).</li><li>Designs for the next ledger era.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-07-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2022-11-09-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2022-10-07-node-cli-api"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Node API &amp; CLI Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#ledger-quarterly-update" class="table-of-contents__link toc-highlight">Ledger Quarterly Update</a></li><li><a href="#2022-09---2022-11-04" class="table-of-contents__link toc-highlight">2022-09 - 2022-11-04</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-most-important-improvements">Summary of most important improvements<a class="hash-link" href="#summary-of-most-important-improvements" title="Direct link to heading">​</a></h3><p>During this quarter the networking team delivered low level specification of
+peer sharing &amp; eclipse evasion.  We held a session with the consensus &amp; the
+scientists; we got a positive feedback on the design.</p><p>Further we focused on implementation of peer sharing.  We produced a <a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">detail
+design</a> and an <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">early implementation</a>.</p><p>We prepared the <em>P2P Single Relay Release</em> (<code>cardano-node-1.35.5</code>).  It
+includes over <a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">130 patches</a> of network stack improvements over the
+previous version <code>1.35.4</code>, which were accomplished over a longer period of
+time.  Among them are both bug fixes and UX improvements for stake pool
+operators like simplified format of the <a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">topology file</a>, or
+improvements in the logged messages:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">tracing of early consensus exceptions</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">tracing of demotion of local root peers</a> (traced with
+<code>Warning</code> severity), the trace is called <code>TraceDemoteLocalAsynchronous</code>, in
+<code>json</code> format it is encoded as <code>DemoteLocalAsynchronous</code>.  For an SPO
+tracking these demotion is vital (such demotion could indicate that a block
+producer is no longer connected to its relays or vice versa)</li></ul><p>We also provide better integration with <a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">systemd</a> (socket
+activation improvements) or improvements in the networking stack:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3785" target="_blank" rel="noopener noreferrer">exit policies</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3915" target="_blank" rel="noopener noreferrer">peer metrics improvements</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">DNS TTL</a> improvements (which make it harder to misconfigure the
+system, an issue discovered by the performance &amp; monitoring team),</li><li>do not trigger inbound idle timeout for <code>node-to-client</code> connections (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3844" target="_blank" rel="noopener noreferrer">pr
+#3844</a>), an issue reported to us by Matthias Benkort from
+Cardano Foundation.</li></ul><p>Duncan has been making progress with the input endorsers demo. His simulation
+provides a useful animated visualisation and live quantification of behaviour
+of the modeled design.</p><p>We also improved our e2e diffusion simulation by implementing header-body
+split, similar to what the real implementation does.</p><p>We also made some advances towards our future goals of P2P release for block
+producer nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a> - in review) &amp; for Daedalus users
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3968" target="_blank" rel="noopener noreferrer">pr #3690</a> - merged).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><ul><li><p>We expanded diffusion simulation with block-fetch protocol bringing it closer
+to the production system.</p></li><li><p>We addressed some additional technical depth in diffusion simulation</p></li><li><p>We slightly improved documentation &amp; CI of io-sim and typed-protocols
+repositories for open-source contributors.</p></li><li><p>We closed a number of issues towards publishing io-sim on Hackage (only two
+essential issues are left open).</p></li><li><p>We pushed a branch of typed-protocols which captures one of the developer UX
+problems in the API which we need to solve.</p></li><li><p>We identified and fixed an issue related to systemd sockets.</p></li><li><p>We identified and fixed an issue in consensus initialisation not giving
+feedback on early errors.</p></li><li><p>We deployed RT View, identified a number of issues which were communicated to
+the performance &amp; monitoring team.</p></li><li><p>We finished high level &amp; detailed design of peer sharing, very early
+implementation of peer sharing is done (note that peer sharing cannot be
+safely deployed without eclipse evasion &amp; genesis).</p></li><li><p>We finished high level design of eclipse evasion, and started working on
+a detailed design.</p></li><li><p>We were assigned the role of release engineer for 1.35.5 release (the P2P
+single relay release); we prepared a cardano-node for 1.35.5 release which
+contains more than 130 patches of just network stack improvements done over
+last few months.</p></li><li><p>We diagnosed and fixed an tricky bug in the peer state actions (a component
+which sits between outbound governor and connection manager). That bug was
+introduced earlier this year and never released. It was caught by the QA
+testing framework. We expanded our diffusion simulation to cover such case and
+also mitigated a chance for reintroducing such a bug in future.</p></li><li><p>We identified and quite likely mitigated a misconfiguration in the
+benchmarking cluster (next benchmarking run will confirm our hypothesis).</p></li><li><p>We simplified the format of p2p topology file, we got positive feedback from
+SPOs.</p></li><li><p>We raised severities of some of the logging messages, which is an important
+improvement for SPOs, exchanges and other users of the system.</p></li><li><p>We worked on input endorsers simulation which gives both animated and
+quantified live feedback on network operation, using a simplified model of
+a TCP/IP network. </p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-quarter">Next quarter<a class="hash-link" href="#next-quarter" title="Direct link to heading">​</a></h2><ul><li><p>Release the Single Relay P2P Release <code>1.35.5</code>.</p></li><li><p>Carry on with Peer Sharing (review, testing).</p></li><li><p>Deliver a talk at <a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">Conference on Principles of Distributed Systems 2022</a> in Brussels, Belgium.</p></li><li><p>Present Detailed Design of Eclipse Evasion and start implementation phase.</p></li><li><p>Work on P2P Block Producer release.</p></li><li><p>Carry on with publishing of <code>io-sim</code> on <code>Hackage</code>.</p></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-09-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2022-11-15-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Quarterly Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2022-11-07-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-quarterly-update" class="table-of-contents__link toc-highlight">Network Quarterly Update</a></li><li><a href="#2022-09---2022-11" class="table-of-contents__link toc-highlight">2022-09 - 2022-11</a><ul><li><a href="#summary-of-most-important-improvements" class="table-of-contents__link toc-highlight">Summary of most important improvements</a></li><li><a href="#detailed-log" class="table-of-contents__link toc-highlight">Detailed log</a></li></ul></li><li><a href="#next-quarter" class="table-of-contents__link toc-highlight">Next quarter</a></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Quarterly Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2022-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li><p>As a consequence of the errors observed when running distributed mempool
+benchmarks, we re-designed the UTxO HD mempool integration, which fixed these
+errors and lead to a simpler and more maintainable design.</p></li><li><p>We focused on increasing test coverage for the UTxO-HD prototype. In
+particular, we added property tests for:</p><ul><li>Backing store (work ongoing)</li><li>Era transitions</li></ul></li><li><p>The property tests we added uncovered several bugs, which is a great result
+given the exponential increase in the cost of finding bugs as they are closer
+to deployment.</p></li><li><p>One of the errors found by our tests required us to work on improvements in
+the Haskell bindings for LMDB. This work is ongoing.</p></li><li><p>We started working on the mempool property tests that will exercise the new
+code paths that UTxO HD introduced.</p></li><li><p>We developed, benchmarked and tested an implementation of sequences of
+differences based on &quot;anti-diffs&quot;. Performance results of diff sequence
+operations show that we achieved a speedup of about <code>4x</code> across several
+scenarios. Note: this speedup is taking into account diff sequence operations
+only, so the consensus-wide speedup is less than <code>4x</code>.</p></li><li><p>We integrated the &quot;anti-diff&quot; prototype into the UTxO HD feature branch.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We wrote a simulator that demonstrates soundness of an abstract implementation
+of the new chain selection rule.</li><li>We elaborated a draft specification for the Genesis implementation (currently
+awaiting feedback from other architects).</li><li>We elaborated a draft specification for the ChainSync Jumping optimization. In
+particular, this includes a proof sketch that the latter preserves liveness
+and safety in all cases.</li><li>With the Networking team, we co-designed the eclipse avoidance mechanism,
+specifically its coherence with the Genesis implementation plan&#x27;s security
+and its dependence on the new ChainSync Jumping optimization.</li><li>We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a
+performance degradation wrt the baseline. Our optimization attempts so far
+have brought the performance closer to the baseline, but not yet to parity.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We did most of the heavy lifting required to integrate the Conway era into the
+Consensus layer.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We started working on enabling CI nightly tests, which revealed several test
+failures due to thunks being found it data structures used by the ledger and
+consensus. We made a lot of progress fixing those thunk errors, but some
+errors still remain.</p></li><li><p>We elaborated a <code>db-analyser</code> benchmark for the ledger operations. This led us
+to the identification of high processing time at epoch boundaries, and we
+could not observe any performance degradation that can be attributed to era
+changes.</p></li><li><p>We fixed a source of flakiness in the ChainDB QSM test.</p></li><li><p>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</p></li><li><p>We fixed a bug in the maximum-allowed ledger major protocol version.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We spent time making <code>cardano-updates</code> the central source of information for
+the core teams stakeholders.</li><li>We went through the Galois gap analysis and extracted actionable points to
+take on next.</li><li>Bart and Yogesh continued with their onboarding and stated making substantial
+contributions to consensus.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Finish the mempool property tests.</li><li>Benchmark the latest version of the prototype.</li><li>Elaborate a document that describes new integration test scenarios and pass it
+to the SDET team.</li><li>Bring query UTxO by address command performance on par with the baseline
+version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Receive and incorporate Duncan&#x27;s feedback on the first draft specification for
+the Genesis implementation.</li><li>Begin prototyping the first genesis implementation, unless the first draft
+needs major changes.</li><li>Draft a second revision of the Genesis report.</li><li>Review the second revision with a wider audience, which includes at least
+Alexander Russell. That feedback will drive a third and hopefully final
+revision.</li><li>Investigate how to mitigate the ~30% slowdown we have observed so far in the
+ChainSync jumping prototype, and try to mitigate it. In particular, we might
+need to optimize the existing BlockFetch logic.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Enabling nightly CI tests.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Merge the tutorial document Galois wrote; requires CI integration.</li><li>Come up with our own documentation improvements, many of which were suggested
+in the Galois gap analysis.</li><li>Try to hire a new team member.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2022-11-15-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-01-13-open-source"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Open-Source Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2022-11-09-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#consensus-quarterly-update" class="table-of-contents__link toc-highlight">Consensus Quarterly Update</a></li><li><a href="#2022-09---2022-11" class="table-of-contents__link toc-highlight">2022-09 - 2022-11</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Quarterly Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>The primary goal of the networking team was to focus on the single relay
+release of P2P.  We fixed a number of small late bugs, and concluded QA
+&amp; performance testing.  Although it was discovered a regression in performance
+of  block production when P2P is enabled, relaying with P2P performs better
+comparing to a non p2p.  We concluded that this is not a blocker for the Single
+Relay Release which is planned shortly.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">Peer sharing</a> has gone through review and final review is
+just being done right now.  After merging it will still be disabled (hidden
+behind a flag) as it&#x27;s not safe without eclipse evasion.  We started
+implementing light peer sharing (i.e. include inbound peers into known peer set
+of the outbound governor).</p><p>We started a detailed eclipse evasion design, it will continue in the next
+quarter.</p><p>We also made a major revision of package structure of the network packages.  We
+ended up with a very clean dependency graph (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">pr #4155</a>).</p><p>Armando Santos delivered a talk at the <a href="https://sites.uclouvain.be/OPODIS2022/armando-details.html" target="_blank" rel="noopener noreferrer">ODOPIS 2022</a> conference on principles
+of distributed systems in Brussels.  The slides are available <a href="https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Neil Davies gave an invited seminar on <code>DeltaQ</code> at Université Catholique de
+Louvain.</p><p>We also found and fixed a few of bugs:</p><ul><li><p>a bug in keep alive mini-protocol which resulted in warm to cold transitions
+to be always executed through a timeout path rather than do a clean demotion
+(<!-- -->[pr #4168]<!-- -->).</p></li><li><p>fixed an assetion failure in the outbound governor (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>) </p></li></ul><ul><li>we fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will work towards the next release of P2P for block producer nodes.  This includes:</p><ul><li>analysing performance regression for BP nodes when using P2P</li><li>finish the work on controlling the block forger through node kernel (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a>)</li><li>address <a href="https://github.com/input-output-hk/ouroboros-network/issues/3907" target="_blank" rel="noopener noreferrer">issue #3907</a> and write a script to analyse deployment of P2P relays</li></ul><p>We would like also to push forward eclipse evasion.   Although most of the work
+has be done already the release of <code>io-sim</code> on <code>Hackage</code> will happen in the
+next quarter.</p><p>We would also like to address <a href="https://github.com/input-output-hk/ouroboros-network/issues/4244" target="_blank" rel="noopener noreferrer">chain-sync timeout issue</a> recently
+diagnosed by Karl Knutsson.</p><p>If time permits we would also like to address some technical debt, especially:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3387" target="_blank" rel="noopener noreferrer">enable nothunk in diffusion tests</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4085" target="_blank" rel="noopener noreferrer">refactor diffusion testnet simulation</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><p>The performance regression for block producer with P2P needs to be investigated
+in the near future.  This is blocker for the release of P2P on BP nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-ouroboros-network">Contributions to Ouroboros-Network<a class="hash-link" href="#contributions-to-ouroboros-network" title="Direct link to heading">​</a></h4><ul><li>We added <code>TraceDemoteLocalAsynchronous</code>, which enables notification of critical issues for SPOs</li><li>We fixed <code>cardano-ping</code> compatibility with <code>NodeToNodeV_10</code> (P2P, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">pr #4165</a>)</li><li>We fixed a bug in demotion peers to cold which affected P2P nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334" target="_blank" rel="noopener noreferrer">commit-61058aa5c2</a>)</li><li>Karl Knutsson enhanced <code>SendFetchRequest</code> (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47" target="_blank" rel="noopener noreferrer">commit-bb1c3dddee</a>), open-source contribution)</li><li>We turned <code>SizeInBytes</code> into a newtype.</li><li>We extended <code>CONTRIBUTING.md</code>, <code>README.md</code>, added <code>CODE_OF_CONDUCT</code>.</li><li>We fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li><li>We fixed a simulation bug found in <a href="https://github.com/input-output-hk/ouroboros-network/issues/4258" target="_blank" rel="noopener noreferrer">issue #4258</a></li><li>[pr #4168]</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-cardano-node">Contributions to Cardano-Node<a class="hash-link" href="#contributions-to-cardano-node" title="Direct link to heading">​</a></h4><ul><li>We maintained the Single Relay Release <a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">pr #4612</a>, (e.g. fixing CI issues,
+Rebasing it when necessary, publishing packages to Cardano Haskell Packages);</li><li>We enhanced <code>JSON</code> serialisation / deserialisation of <code>NodeToNodeVersion</code> and <code>NodeToClientVersion</code>;</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-iosim">Contributions to IOSim<a class="hash-link" href="#contributions-to-iosim" title="Direct link to heading">​</a></h4><ul><li>We started to use Cardano Haskell Packages for <code>IOSim</code> (<a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pr #48</a>)</li><li>We updated change log files</li><li>We added support of <code>ghc-9.4</code> (<a href="https://github.com/input-output-hk/io-sim/pull/50" target="_blank" rel="noopener noreferrer">pr #50</a>)</li></ul><p>We also addressed the following issues in <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> in order to prepare the package for publication on Hackage:</p><ul><li>refactored <code>io-classes</code> timers API (<a href="https://github.com/input-output-hk/io-sim/issues/46" target="_blank" rel="noopener noreferrer">issue #46</a>);</li><li>created a new package <code>si-timers</code> which exposes an interface using SI units
+and is safe on 32-bit systems (<a href="https://github.com/input-output-hk/io-sim/issues/59" target="_blank" rel="noopener noreferrer">issue #59</a>);</li><li>added monad transformers instances for classes defined in <code>io-classes</code> (<a href="https://github.com/input-output-hk/io-sim/issues/58" target="_blank" rel="noopener noreferrer">issue #58</a>);</li><li>created <code>io-classes-mtl</code> package which includes (experimental) instances for monad transformers;</li><li>provide <code>MonadMonotonicTimeNSec</code> in <code>io-classes</code> and <code>MonadMonotonicTime</code> in <code>si-timers</code> (so that <code>io-classes</code> follow the <code>base</code> package);</li><li>added  <code>registerCancellableDelay</code> in <code>si-timers</code> (which allowed us to hide fancy timer api and clean <code>io-classes</code>)</li><li>added support for <code>js_HOST_ARCH</code> (the new GHC JS backend)</li></ul><p>Note the <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> contains almost 40 commits, and was a major step forward for
+<code>io-sim</code> ecosystem.  We also prepared a draft <a href="https://github.com/input-output-hk/cardano-node/pull/4281" target="_blank" rel="noopener noreferrer">pr #4281</a> which updates
+<code>ouroboros-network</code>.</p><p>Other changes for <code>1.0.0.0</code> release on Hackage:</p><ul><li>Refactored test suite (<a href="https://github.com/input-output-hk/io-sim/pull/47" target="_blank" rel="noopener noreferrer">pr #47</a>)</li><li>Updated documentation, cabal files, <code>CONTRIBUTING</code>, <code>SECURITY</code> documents, etc in <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">pr #60</a>, currently under review.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-13-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-01-18-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Quarterly Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-01-13-open-source"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Open-Source Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#network-quarterly-update" class="table-of-contents__link toc-highlight">Network Quarterly Update</a></li><li><a href="#2022-11---2023-01" class="table-of-contents__link toc-highlight">2022-11 - 2023-01</a><ul><li><a href="#summary" class="table-of-contents__link toc-highlight">Summary</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li><li><a href="#risks" class="table-of-contents__link toc-highlight">Risks</a></li><li><a href="#detailed-log" class="table-of-contents__link toc-highlight">Detailed log</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Open-Source Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-quarterly-update">Open Source Quarterly Update<a class="hash-link" href="#open-source-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>In the last quarter the open-source initiative delivered a comprehensive report
+on the state of our repositories.  As part of this work stream we
+identified the key open-source repositories for the cardano project across all
+the projects  From a list of more than 500 repositories (some of which are
+forks) we identified key repositories which constitute the core of Cardano.
+20 of them were identified as to be transferred to the future MBO which will
+govern Cardano development.  Some where excluded (like <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> and
+<a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a>), to be govern by IOG, since they have a much broader
+application than Cardano itself, and thus we think their open-source future
+will be better outside of the Cardano umbrella.</p><p>Christian Taylor identified a number of ways we can improve our repositories to
+make them more attractive for open-source contributions by analysing each of
+them.  This includes adding or improving various documentation files, like
+<code>CONTRIBUTING</code> files, adding code of conduct, improving readme files, issue
+&amp; pull request templates etc.  Christian also computed various interesting
+metrics which gives a very good insight into the development practices: e.g.
+average merge ratio, average number of reviews, comments and many more!  The
+presentation is available <a href="https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ" target="_blank" rel="noopener noreferrer">here</a>.</p><p>We followed with work on the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  We included
+a standard code of conduct which is now used by most important projects in the
+Cardano space.  We included <code>cardano-node</code>&#x27;s security policy and added
+a responsible disclosure policy.  We also described how roles and
+responsibilities should be clarified.  This progress was made by
+a collaborative effort of the Cardano Core, Plutus and Architecture teams, and
+it wouldn&#x27;t be possible without Michael Peyton Jones, Arnaud Bailly, Kevin
+Hammond, Jared Corduan and Marcin Szamotulski.</p><p>We also improved the documentation of key repositories, by adding description,
+improving their <code>README</code> file &amp; <code>CONTRIBUTING</code> files, adding code of conducts
+following the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  This includes improvements to:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network" target="_blank" rel="noopener noreferrer"><code>ouroboros-network</code></a> (both <code>network</code> &amp; <code>consensus</code>)</li><li><a href="https://github.com/input-output-hk/cardano-ledger" target="_blank" rel="noopener noreferrer"><code>cardano-ledger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-node" target="_blank" rel="noopener noreferrer"><code>cardano-node</code></a></li></ul><p>And also</p><ul><li><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a></li><li><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a></li><li><a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer"><code>cardano-prelude</code></a> (work in progress)</li></ul><p>The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. </p><p>In this quarter we also identified a number of projects which can be published to
+<code>Hackage</code> (Haskell&#x27;s package repository) or <code>crate</code> (Rust package repository).
+The list contains 21 packages, 2 of which (<a href="https://hackage.haskell.org/package/hedgehog-extras" target="_blank" rel="noopener noreferrer"><code>hedgehog-extras</code></a> and
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>) are already published on Hackage and another 5 (from
+the <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> repository) are close to be published.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><p>The progress of the open-source project is tracked in <a href="https://github.com/orgs/input-output-hk/projects/60/views/1" target="_blank" rel="noopener noreferrer">this project</a>.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/open-source">open-source</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-13-open-source.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-01-13-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Quarterly Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2022-11-15-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Quarterly Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#open-source-quarterly-update" class="table-of-contents__link toc-highlight">Open Source Quarterly Update</a></li><li><a href="#2022-11---2023-01" class="table-of-contents__link toc-highlight">2022-11 - 2023-01</a><ul><li><a href="#summary" class="table-of-contents__link toc-highlight">Summary</a></li><li><a href="#detailed-log" class="table-of-contents__link toc-highlight">Detailed log</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Quarterly Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-01-18T00:00:00.000Z" itemprop="datePublished">January 18, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-12---2023-01">2022-12 - 2023-01<a class="hash-link" href="#2022-12---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><p>The prototype is feature complete and thoroughly tested at the consensus level.
+In particular, we invested a lot of time in writing property-test for the
+mempool, and other crucial new parts of the prototype. Now we are ready to run
+integration tests and system-level benchmarks.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><p>We identified and fixed a slowdown in cross-era forecasting that was inhibiting
+our efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%
+speedup in full sync times in the baseline.</p><p>We also started prototyping a self-contained implementation of the Genesis
+dynamics (in particular of the parts intentionally not part of the ChainSync
+Jumping prototype) that furthered our understanding of subtleties and edge
+cases.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We worked on designing integration of new VRF and KES crypto into consensus.<ul><li><code>Crypto</code> class was split into two parts: <code>Crypto</code> and <code>HeaderCrypto</code>.</li><li>With the Ledger team&#x27;s help, we refactored <code>cardano-ledger</code> to use a proxy
+type for VRF.</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>PR went through its second review round. It is about to be merged, but it got
+delayed due to people&#x27;s availability during Christmas break.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We improved the capabilities of our <code>io-sim</code> library, which is key for testing
+and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger, which is important
+for reducing memory consumption of the Cardano node.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We added a tutorial on how to instantiate the Consensus layer to run custom
+ledgers. This should be a valuable resource to people looking to roll their
+own custom blockchain (either for commercial or research purposes).</li><li>We added an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Evaluate the extensibility of the prototype. Moving the UTxO to disk is only
+the first step towards reducing the memory requirements of Cardano node, and
+ensuring its long term sustainability. In the future, we plan on moving other
+large maps, such as delegation maps. The prototype should be able to
+accommodate these changes without any major modifications.</li><li>Start the integration with other downstream components, such as the wallet and
+db-sync. The idea is to identify and address any potential pain points that
+might arise during this integration.</li><li>Run integration tests and system-level benchmarks.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Finish benchmarking and tuning the fast-path ChainSync Jumping prototype</li><li>Expand and optimize the self-contained implementation of the Disconnect Rule
+(including density comparisons and the LoE)</li><li>Develop documentation and smoke tests for these components.</li><li>Start modifying the ChainSync Client for the LoP and LoR.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Help the Network team with diagnosing performance regression in block
+production.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Fix property-test failures concerning iterators (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3999" target="_blank" rel="noopener noreferrer">#3999</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>).</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Finish <a href="https://github.com/input-output-hk/ouroboros-network/issues/4145" target="_blank" rel="noopener noreferrer">mapping consensus</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-2">UTxO HD<a class="hash-link" href="#utxo-hd-2" title="Direct link to heading">​</a></h4><ul><li>Moving other parts of the ledger state to disk might require a major redesign
+of the prototype. For instance, if it turns out that the epoch change rules
+require access to the <em>full</em> ledger state. If this is the case, we might
+accept this risk and do the redesign after the initial release of UTxO-HD.</li><li>Integration with downstream clients might require more work than we
+anticipate.</li><li>Access to the benchmarking&#x27;s team time and resources.</li><li>Benchmarking results might show significant performance degradation, which
+will require additional work if such performance degradation is not accepted
+by other stakeholders.</li><li>The prototype&#x27;s performance might not be accepted by other stakeholders. Here
+we need to clearly communicate that this is necessary to ensure that as the
+blockchain size grows, the node can operate within reasonable memory
+constraints.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-01-18-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-04-03-ledger"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Ledger Team Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-01-13-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Quarterly Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#consensus-quarterly-update" class="table-of-contents__link toc-highlight">Consensus Quarterly Update</a></li><li><a href="#2022-12---2023-01" class="table-of-contents__link toc-highlight">2022-12 - 2023-01</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li><li><a href="#risks" class="table-of-contents__link toc-highlight">Risks</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Ledger Team Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-03T00:00:00.000Z" itemprop="datePublished">April 3, 2023</time> · <!-- -->7 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cips">CIPs<a class="hash-link" href="#cips" title="Direct link to heading">​</a></h4><ul><li><strong>Entering the Voltaire phase</strong> -
+CIP-1694 received a major update after participation in the design has expanded to
+more and more people, including those who attended the Colorado workshop.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>.</li><li><strong>Ledger CIP category</strong> -
+The ledger team continues to embrace the CIP process, and has begun the process of
+registering the ledger as an official CIP category.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP-84</a>.</li><li><strong>Ledger serialization</strong> -
+A CIP for the ledger serialization deprecation cycle has been accepted.
+See <a href="https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080" target="_blank" rel="noopener noreferrer">CIP-80</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="formal-ledger-model">Formal ledger model<a class="hash-link" href="#formal-ledger-model" title="Direct link to heading">​</a></h4><p>Our new formal specifications backed by Agda have seen a lot of progress.
+The majority of the ideas in CIP-1694 are now present, and we have made enough progress
+that we can now safely say that the PDF produced by the Agda model will be the
+official ledger specification for the Conway ledger era.
+See <a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">the repository</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h4><p>Progress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.
+The major component still missing is the DRep stake distribution, which still presents some
+technical challenges.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="drep-stake-distribution-computation">DRep stake distribution computation<a class="hash-link" href="#drep-stake-distribution-computation" title="Direct link to heading">​</a></h4><p>Adding another large stake distribution to the ledger state must proceed with caution.
+We do not want the memory used by the node to increase too much,
+and performance problems can lead to reduced block production.
+We have prototyped, tested, and benchmarked several approaches that could give us
+the current DRep stake distribution at each epoch boundary.
+This has very important implications, since we want every ADA holder to be able to at any
+time (such as during a contentious vote) register themselves as a DRep and still have time
+to vote themselves on the issue.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h4><p>The ledger has made some wonderful improvements over the past six months,
+but which entail a significant amount of integration efforts:</p><ul><li>Our new versioned CBOR schemes</li><li>Individual deposit tracking</li><li>An improved cross-era interface utilizing lenses</li><li>A new ledger API</li><li>Re-arranging the ledger stake in preparation for CIP-1694</li><li>Versioning our Haskell packages
+using <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaPs</a>.</li><li>Consistent conventions for variable names</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a>]
+[<a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/378" target="_blank" rel="noopener noreferrer">pull-378</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/376" target="_blank" rel="noopener noreferrer">pull-376</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/373" target="_blank" rel="noopener noreferrer">pull-373</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/370" target="_blank" rel="noopener noreferrer">pull-370</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/361" target="_blank" rel="noopener noreferrer">pull-361</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/4976" target="_blank" rel="noopener noreferrer">pull-4976</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">pull-5013</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h4><p>Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.
+Deposits were returned according to the current protocol parameters.
+When the values of these two protocol parameters change, the deposit pot
+is adjusted by adding to, or removing from, the reserves.</p><p>This has several problems:</p><ul><li>Most people expect a deposit to be paid back exactly.</li><li>We cannot increase the deposit amount once the reserves hits zero.</li><li>If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.</li><li>Because of the problems above, it is going to be incredibly hard to ever change the values.</li><li>There is a serious issue involving hard forks.
+The consensus layer makes the decision about whether or not to enact a hard fork based on
+the protocol parameter update state two stability windows before the end of the epoch.
+However, the ledger will reject a protocol parameter update on the epoch boundary
+if the deposit pot adjustments cannot be reconciled with the reseve pot.
+This means that if quorum is met regarding changing the major protocol version,
+but the update is rejected on the epoch boundary, consensus will change the era but the
+ledger will not change the major protocol version, leaving the ledger in a split-brain state.</li></ul><p>Because we never actually changed the values of the two deposits amounts in the protocol parameters
+on mainnet, we were able to retroactively change the behavior.
+We made the following changes:</p><ul><li>Individual deposits are tracked in the <code>DState</code>.</li><li>The amount deposited is always returned.</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-ledger-api">New ledger API<a class="hash-link" href="#new-ledger-api" title="Direct link to heading">​</a></h4><p>We have significantly built up the ledger API.
+We will eventually replace much of the <code>cardano-api</code> in the node repository with this ledger API.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h4><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We have a new declaritive infrastructure for building constraint-based generators,
+which instead generate a random ledger state representative of not just an initial state,
+but also those representative of the end result of a long sequence of valid blocks.
+Moreover, these generators are very fast and are much more random than our old generators.
+Before we can start using them for our existing property tests, however, we still need to
+expand them to generate a valid block for a given ledger state.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><p>We continued to address technical debt as much as we can.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3323" target="_blank" rel="noopener noreferrer">pull-3323</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3338</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a>]</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="critical-fixes">Critical fixes<a class="hash-link" href="#critical-fixes" title="Direct link to heading">​</a></h5><p>We fixed two critical issues:</p><ul><li>Growing block production delay on the epoch boundary: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a>]</li><li>Unexpected node shutdown from <code>balanceR</code>: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li><strong>Conway spec</strong> -
+Complete the first version of the conway formal specification.</li><li><strong>DRep stake distribution</strong> -
+Have the ledger compute the DRep stake distribution with acceptible performance.</li><li><strong>Devnet ready</strong> -
+Have the Haskell implementation of the conway era in sync with the formal specification,
+and integrate the changes with consensus and node.
+All the details might not be finalized, but the wire specification and the API should
+be stable so that conway can be placed on a devnet for tool builders to start integrating with.</li><li><strong>Plutus V3</strong> -
+Integrate Plutus V3 into the ledger, including a new script context which supports DReps.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h3><p>This quarterly report was based off of the following fortnightly ones:</p><ul><li><a href="/cardano-updates/quarterly/2023-01-05-ledger">2023-01-05</a></li><li><a href="/cardano-updates/quarterly/2023-01-19-ledger">2023-01-19</a></li><li><a href="/cardano-updates/quarterly/2023-02-02-ledger">2023-02-02</a></li><li><a href="/cardano-updates/quarterly/2023-02-17-ledger">2023-02-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-03-ledger">2023-03-03</a></li><li><a href="/cardano-updates/quarterly/2023-03-17-ledger">2023-03-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-31-ledger">2023-03-31</a></li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-03-ledger.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-04-04-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Q1 2023 Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-01-18-consensus"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Consensus Quarterly Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#ledger-quarterly-update" class="table-of-contents__link toc-highlight">Ledger Quarterly Update</a></li><li><a href="#2023-01---2023-03" class="table-of-contents__link toc-highlight">2023-01 - 2023-03</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li><li><a href="#more-details" class="table-of-contents__link toc-highlight">More details</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Q1 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-04T00:00:00.000Z" itemprop="datePublished">April 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gradual-dynamic-p2p-release-on-mainnet">Gradual dynamic P2P release on mainnet<a class="hash-link" href="#gradual-dynamic-p2p-release-on-mainnet" title="Direct link to heading">​</a></h4><p>We released two version of <code>cardano-node</code> with dynamic P2P capabilities:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6" target="_blank" rel="noopener noreferrer"><code>1.35.6</code></a><ul><li>we found and fixed a bug in exception handling in <code>peer-state-actions</code><a href="https://github.com/input-output-hk/ouroboros-network/pull/4357" target="_blank" rel="noopener noreferrer">pull-4357</a></li><li>we found and fixed a busy loop when demoting a peer from hot to warm <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">pull-4385</a> </li></ul></li><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7" target="_blank" rel="noopener noreferrer"><code>1.35.7</code></a><ul><li>includes interoperability in the legacy non-p2p network stack <a href="https://github.com/input-output-hk/outoboros-network/pull/4467" target="_blank" rel="noopener noreferrer">pull-4467</a></li></ul></li><li>we fixed a busy loop of demotion &amp; promotions: <code>warm -&gt; hot -&gt; warm</code>[pull-4485]<!-- --> /it will be included in <code>cardano-node-8.0.0</code> release/.</li></ul><p>Currently there are more than 200 P2P relays on mainnet.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented /peer sharing/ <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull-4019</a> which will be available as an
+experimental feature in one of the future <code>cardano-node</code> releases.</p><p>We implemented /light peer sharing/, e.g. adding inbound connections to the set
+of known peers of the outbound governor, which allows to bootstrap relays not
+registered on chain.  This complements peer sharing.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4277" target="_blank" rel="noopener noreferrer">pull-4277</a> is in
+late review stages.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised design of eclipse evasion and we started implementing it.  We
+have an initial implementation (not merged). We are in the process of extending
+our test suite to cover new implementation details: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>, <a href="https://github.com/input-output-hk/outoboros-network/pull/4462" target="_blank" rel="noopener noreferrer">pull-4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h4><p>Galois has been making progress on <em>Cardano Network Service Assurance</em> project.</p><ul><li><p>In cardano-node, they have developed a <code>datapoint</code> abstraction that creates
+a queue of (existing) log events, they now have two such <code>datapoint</code>s (of log
+events) implemented.</p></li><li><p>They have developed a <code>datapoint</code> client executable that can connect to a node
+which serves the &quot;new tracing&quot;.</p></li><li><p>They have been exploring approaches for the consolidation and analysis of
+<code>datapoint</code> data to extract actionable network health status.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li>We made it possible to configure accepted connections limit <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">pull-4902</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We fixed a bug in network simulation implementation of TCP simultaneous open <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">pull-4265</a>.</p></li><li><p>We introduced header-body split in the diffusion simulation <a href="https://github.com/input-output-hk/outoboros-network/pull/4419" target="_blank" rel="noopener noreferrer">pull-4419</a> (in review).</p></li><li><p>We introduced initiator only nodes in the diffusion simulation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4280" target="_blank" rel="noopener noreferrer">pull-4280</a>.</p></li><li><p>We fixed a connection-manager test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue-4370</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We refactored <code>Snocket</code> interface decoupling it from the multiplexer
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">pull-4260</a>. This simplified some aspects of the KES agent implementation.</p></li><li><p>We introduces a record for CBOR codecs which are used for various data
+structures by mini-protocol codecs <a href="https://github.com/input-output-hk/outoboros-network/pull/4430" target="_blank" rel="noopener noreferrer">pull-4430</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h4><ul><li>We explained some limitations of CDDL in our technical report <a href="https://github.com/input-output-hk/ouroboros-network/pull/4351" target="_blank" rel="noopener noreferrer">pull-4351</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h4><ul><li>We fixed implementation of <code>MVar</code>&#x27;s <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">pull-70</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nothunks">NoThunks<a class="hash-link" href="#nothunks" title="Direct link to heading">​</a></h4><ul><li>We published a new version of <a href="https://hackage.haskell.org/package/nothunks" target="_blank" rel="noopener noreferrer"><code>nothunks</code></a> library to Hackage.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Finish implementation &amp; testing of eclipse evasion <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>.</li><li>Optimise connectivity to peers behind firewall <a href="https://github.com/input-output-hk/ouroboros-network/issues/4381" target="_blank" rel="noopener noreferrer">issue-4381</a>.</li><li>Finish the work on enabling block production dynamically to allow using P2P
+on block producers <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">issue-3159</a>.</li><li>If time permits we would like also to reserve some time for finishing
+publication of <code>io-sim</code> to Hackage.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-04-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-04-25-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Quarterly Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-04-03-ledger"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Ledger Team Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#2023-01---2023-03" class="table-of-contents__link toc-highlight">2023-01 - 2023-03</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Quarterly Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-04-25T00:00:00.000Z" itemprop="datePublished">April 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished the testing activities for the prototype, which involved adding
+new tests, and fixing and enabling temporarily disabled tests.</li><li>We spent a substantial amount of effort refactoring and cleaning the
+prototype.</li><li>We audited the UTxO HD prototype to make sure it can accommodate the migration
+of other tables (eg stake-keys registration) from memory to disk. The result
+of the audit was positive.</li><li>We ran ad-hoc benchmarks for reading keys and flushing values to disk. No
+unexpected costs found.</li><li>We ran the first system level benchmarks. The performance regressions reported
+were due to an unrealistic snapshotting rate. We need to re-run them again
+after we design a more fine grained locking mechanism.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We elaborated a roadmap of the remaining work for Genesis.</li><li>We presented the design to the IOG Researchers and PNSol on February 20. The
+design was well received. We updated the Genesis design with the researcher&#x27;s
+feedback.<ul><li>We plugged the new DoS vector identified during the aforementioned
+presentation.</li></ul></li><li>We developed a generator for adversarial leader schedules that satisfy key
+Ouroboros properties, which will be used to test the Genesis design.<ul><li>The generator enables use of smaller Ouroboros parameters, which makes
+extrema more likely and counterxamples easier interpret.</li></ul></li><li>We wrote up the latest design iteration.</li><li>We continued benchmarking the Chain Sync Jumping prototype. In particular:<ul><li>We debugged the prototype&#x27;s performance regression, and unmasked the
+actual cause by patching our initial theory (bad queuing behavior)</li><li>We identified and validated the actual cause (a pathological case in
+BlockFetch tiebreaker).</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother
+to serve a local immutable DB.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We integrated the Conway era into consensus.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug with followers, which was discovered by property tests.</li><li>We developed a DSL for specifying and running ChainDB test cases.</li><li>We fixed failing tests with iterators.</li><li>We created micro-benchmarks for adding transactions to the mempool.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released a new technical documentation site for consensus.</li><li>We factored out several packages to external repositories. Some of this work
+originated in the UTxO HD workstream.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/28</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/33" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/33</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/32" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/32</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/31" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/31</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Design Consensus side of hardfork-enactment in the Voltaire phase
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4180" target="_blank" rel="noopener noreferrer">#4180</a>).</li><li>Estimate the number of file descriptors Consensus needs
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/20" target="_blank" rel="noopener noreferrer">#20</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define
+for consensus. Pick one and implement benchmarks for it.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Onboard a new team member.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-04-25-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-Q3-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Q3 2023 Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-04-04-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Q1 2023 Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#consensus-quarterly-update" class="table-of-contents__link toc-highlight">Consensus Quarterly Update</a></li><li><a href="#2023-01---2023-03" class="table-of-contents__link toc-highlight">2023-01 - 2023-03</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Consensus Q2 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04----2023-06">2023-04 -- 2023-06<a class="hash-link" href="#2023-04----2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished a major prototype refactoring, which includes:<ul><li>A better and finer grained DB lock mechanism.</li><li>Elimination of race conditions.</li><li>Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.</li><li>Architectural simplifications and performance improvements.</li></ul></li><li>We implemented a new package to support db-sync integration with UTxO-HD.</li><li>We ran another set of ad-hoc benchmarks:<ul><li>We uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>.</li><li>The synchronization and replay speed are as expected.</li><li>However, we uncovered memory consumption issues (see figure below).<ul><li>The in-memory backend is consuming more memory than the baseline.</li><li>The LMDB backend shows an unexpected memory usage peak.</li><li>Investigation on these issues is ongoing.</li></ul></li></ul></li><li>We integrated the latest changes in <code>main</code> branch.<ul><li>This required a re-design of the mempool to include the mempool fairness
+improvement.</li></ul></li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks-74f9d76c2602f09652f584cc4d6a0962.png" width="2500" height="1700" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>The Genesis work for this PI focused on an high-priority issue from the IOG Researchers&#x27; feedback on the proposal.<ul><li>This particular question was not anticipated when the Q2 PI was planned.</li><li>As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.</li><li>That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.</li></ul></li><li>The IOG Researchers&#x27; feedback on the design was very valuable. It had two primary effects.</li><li>Outcome 1: We re-introduced distinct behaviors when the node is &quot;syncing&quot; versus when it is &quot;caught up&quot;.<ul><li>This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.</li><li>The additional design complexity is relatively small.</li></ul></li><li>Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.<ul><li>The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.</li><li>All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.</li><li>Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.</li><li>The primary invention was a model for bounding how much benefit the adversary&#x27;s long-range attack could possibly gain from Praos&#x27;s natural short forks.</li></ul></li><li>Relevant questions that the IOG Researchers are still assessing.<ul><li>These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.</li><li>Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?</li><li>Question 2: what is the upper bound on how much grinding can improve the adversary&#x27;s leader schedule within some Genesis window?</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We performed an analysis on number of file descriptors used by Consensus, this
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough, thus improving the user (eg node
+operator) experience.</li><li>We implemented a mempool fairness improvement, by which transactions are
+guaranteed to be processed irrespective of their size.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in followers logic, which was discovered by our <code>QuickCheck</code>
+property tests.</li><li>We created an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB
+server</a>. This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> tool, which can be used in disaster recovery and benchmarking scenarios.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/161" target="_blank" rel="noopener noreferrer">benchmarks comparison tool</a> that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance <em>improvements</em> introduced by the Ledger team in version <code>0.6.0.0</code> of Consensus wrt version <code>0.5.0.0</code>.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-beacon-graph-ded65e814bfe6d927faa1c5c66bbbfad.png" width="1840" height="1372" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released <code>fs-sim</code> as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.</li><li>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new repository</a>, splitting
+it from the <code>ouroboros-network</code> repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).</li><li>We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).</li><li>We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>We will <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">get UTxO-HD ready for handover</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-consensus.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-Q2-network"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Network Q2 2023 Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#2023-04----2023-06" class="table-of-contents__link toc-highlight">2023-04 -- 2023-06</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Network Q2 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised the design of eclipse evasion and implemented its mechanism which
+relays on connectivity to <em>big ledger peers</em>.  <em>Big ledger peers</em> are the
+largest ledger peers which accumulate 90% of stake (currently there are less
+than 1000 of them).  The outbound governor has new targets for <em>known</em>,
+<em>established</em> and <em>active</em> big ledger peers which work in a similar way that
+such targets work for ledger peers.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4662" target="_blank" rel="noopener noreferrer">ouroboros-network#4662</a> PR is
+currently in review.</p><p>As part of this work we also identified a bug which would prevent a node to
+connect to itself.  Such connections are not easily detectable and are expected
+to be dropped by the churn mechanism, nonetheless they should not be buggy.
+The failure was discovered thanks to our e2e simulation of diffusion using
+<code>io-sim</code> &amp; property based testing.</p><p>The PR also refactors the heart of the <code>ouroboros-network</code> interface reducing
+technical debt that would otherwise accumulate.</p><p>We also identified a possible improvement in the churn mechanism, which will be
+implemented in Q3.  Churn needs to await for peers to terminate, we can
+improve the synchronisation. <!-- -->[ouroboros-network#4617]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ecosystem-p2p-deployment-progress">Ecosystem P2P Deployment Progress<a class="hash-link" href="#ecosystem-p2p-deployment-progress" title="Direct link to heading">​</a></h4><p>We reached <strong>50% of stake in hands of SPOs who run at least on P2P relay</strong>.  Now
+also Emurgo and CF are running some P2P relays. Also 20% of IOG relays are
+running in P2P mode.</p><p><img loading="lazy" alt="P2P Progress" src="/cardano-updates/assets/images/2023-07-06-p2p-progress-194a909569eebb016b1f24fb8941e2cc.png" width="1024" height="768" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented <em>bootstrapping for peer sharing</em> (also known as light peer
+sharing).  New downstream (inbound) peers are now added to the <em>known peers</em> of
+the <em>outbound governor</em>.  Together with peer sharing this allows for non
+registered relays to propagate through the network. <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">ouroboros-network#3596</a></p><p><em>Please note that peer sharing is disabled by default and is not considered safe
+until Bootstrap Peers (see below) or Genesis is implemented.</em></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="diffusion-p2p">Diffusion (P2P)<a class="hash-link" href="#diffusion-p2p" title="Direct link to heading">​</a></h4><ul><li><p>We designed a feature which will reduce the load on IOG relays (in future
+also run by CF &amp; Emurgo).  The feature consists of two parts.  A new source
+of peers called <em>bootstrap peers</em> (obtained from via an https request), the
+ability to switch from bootstrap peers to ledger peers if the node is synced
+(we are collaborating with the consensus team on the interface <a href="https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md" target="_blank" rel="noopener noreferrer">Bootstrap
+Peers IER</a>).   This feature will be completed in Q3.
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">ouroboros-network#4530</a></p></li><li><p>We published a blog post about <a href="https://engineering.iog.io/2023-06-28-p2p" target="_blank" rel="noopener noreferrer">P2P design &amp; implementation</a>.</p></li><li><p>Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">ouroboros-network#4559</a>.</p></li><li><p>We merged changes which allow the consensus layer to start / stop block
+forging thread.  This will allow to deploy P2P block producing nodes which
+serve as a live backup node. <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a></p></li><li><p>We fixed a few bugs in local root peers DNS resolution service:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4583" target="_blank" rel="noopener noreferrer">ouroboros-network#4583</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4571" target="_blank" rel="noopener noreferrer">ouroboros-network#4571</a>.</p></li><li><p>We limited concurrency of DNS name resolutions: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">ouroboros-network#4596</a>.</p></li><li><p>Galois Inc implemented query option for Handshake: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</p></li><li><p>We fixed handshake query timeout: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">ouroboros-network#4608</a>.</p></li><li><p>We implemented warm valency for local root peers.  This can help when using
+DNS names in local root peers which resolve to many IP addresses. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a></p></li><li><p>We merged handshake changes which allow query protocol versions.  Thanks to
+James Parker from Galois Inc.: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a>.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-improvements--developments">Other Improvements &amp; Developments<a class="hash-link" href="#other-improvements--developments" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cddl">CDDL<a class="hash-link" href="#cddl" title="Direct link to heading">​</a></h4><ul><li><p>We added <code>node-to-node</code> and <code>node-to-client</code> CDDL specs / tests for encoding
+of <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>.  </p></li><li><p>We clarified an inconsistency between CDDL spec and implementation which is
+highly polymorphic.  We designed and implemented a fix for <code>tx-submission</code>
+and <code>local-tx-submission</code> mini-protocols.  Specs for other mini-protocols will
+be improved at a later stage. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">ouroboros-network#4580</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ping"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping" target="_blank" rel="noopener noreferrer">Cardano Ping</a><a class="hash-link" href="#cardano-ping" title="Direct link to heading">​</a></h4><ul><li><p><code>cardano-ping</code> command was deprecated in favour of <code>cardano-cli ping</code> (the
+transition was done by the <code>node</code> team).</p></li><li><p>Support for <code>node-to-client</code> protocol using Unix sockets.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">ouroboros-network#4601</a></p></li><li><p>Support for <code>NodeToNodeV_11</code> and <code>NodeToClientV_16</code>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4587" target="_blank" rel="noopener noreferrer">ouroboros-network#4587</a></p></li><li><p><code>cardano-cli ping</code> is now using <em>ISO8601</em> format for timestamps.  Formatting of
+messages was improved. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">ouroboros-network#4593</a></p></li><li><p><code>cardano-cli ping</code> has a new <code>--query-versions</code> flag which allows to query
+supported versions by the remote node.  This is supported by
+<code>cardano-node-8.1.0</code>. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">ouroboros-network#4589</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">cardano-node#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim"><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">IOSim</a><a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><ul><li><p>We fixed timeouts &amp; delays in <code>io-classes</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</p></li><li><p>We released <code>strict-stm-1.1.0.1</code> on Hackage which fixed a bug in package
+description file: <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">io-sim#101</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols"><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer">Typed Protocols</a><a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h4><ul><li>We published haddocks of <code>typed-protocols</code> at
+<a href="https://input-output-hk.github.io/typed-protocols" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/typed-protocols</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-client"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client" target="_blank" rel="noopener noreferrer">Cardano Client</a><a class="hash-link" href="#cardano-client" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in <code>cardano-client-0.1.0.2</code> release which results in clients
+(e.g. <code>db-sync</code>) negotiate an experimental protocol version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>After the split between consensus &amp; network, we made <code>cardano-client</code>
+independent of <code>ouroboros-consensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</p></li><li><p>We wrap all exceptions in <code>DiffusionError</code>: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">ouroboros-network#4537</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ci-improvements">CI improvements<a class="hash-link" href="#ci-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We switched to use GitHub merge queues in <code>ouroboros-network</code>, <code>io-sim</code> and
+<code>typed-protocols</code> repositories; <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4546" target="_blank" rel="noopener noreferrer">ouroboros-network#4546</a>.</p></li><li><p>We cleaned &amp; updated scripts which run on CI.</p></li><li><p>We implemented a script to verify &amp; release packages on CHaP; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">ouroboros-network#4542</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">ouroboros-network#4573</a>.</p></li><li><p>We implemented a new CI script and cleaned existing ones:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">ouroboros-network#4572</a>.</p></li><li><p>We don&#x27;t install cryptographic libraries on CI anymore as none of our
+packages requires them; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">ouroboros-network#4539</a>.</p></li><li><p>Improved caching of dependencies: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">ouroboros-network#4553</a>.</p></li><li><p>We made it possible to trigger building haddock manually:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">ouroboros-network#4549</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-94--96">GHC 9.4 &amp; 9.6<a class="hash-link" href="#ghc-94--96" title="Direct link to heading">​</a></h4><p>We made all repositories under our control compile with <code>ghc-9.4</code> and <code>ghc-9.6</code>
+which includes <code>ouroboros-network</code>, <code>io-sim</code>, <code>typed-protocols</code> and
+<code>Win32-network</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will continue towards our <a href="https://github.com/orgs/input-output-hk/projects/39/views/30" target="_blank" rel="noopener noreferrer">aspirational roadmap</a>.</p><ul><li>We will continue reviewing eclipse evasion.</li><li>As <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a> was merged, we are making progress towards
+releasing P2P on block production nodes.  We hope to analyse performance
+regression on such nodes observed on the benchmarking cluster. <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=6875505" target="_blank" rel="noopener noreferrer">roadmap-3887</a></li><li>We are also focused on <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=8920085" target="_blank" rel="noopener noreferrer">roadmap-3969</a>. Note that it was expanded in Q2.</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-network.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-Q2-consensus"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Consensus Q2 2023 Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-Q2-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Q2 2023 Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#2023-04---2023-06" class="table-of-contents__link toc-highlight">2023-04 - 2023-06</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#other-improvements--developments" class="table-of-contents__link toc-highlight">Other Improvements &amp; Developments</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Q2 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Expanding the darwin CI cluster and adding aarch64 builder support</li><li>Adding bare metal capability to bitte clusters</li><li>Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality</li><li>Creation of pool performance analysis queries and scripting</li><li>Migration of testnet metadata server to cardano-world</li><li>Cardano shelley qa migration to cardano-world</li><li>Cardano sanchonet environment spin up to test Conway era functionality</li><li>Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with the conversion of mainnet to using p2p topology</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q2-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-Q2-network"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Network Q2 2023 Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">Performance &amp; 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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">Performance &amp; Tracing Q3 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><ul><li>Release benchmarking</li><li>Developing and running UTxO-HD benchmarks - in-memory flavour</li><li>P2P benchmarks, facilitating rollout</li><li>Production-readiness of the new Nomad cluster has been reached</li><li>Optimization of and introspection capability for the new tracing system</li><li>GHC9 performance investigation (and possible remedy)</li><li>Conensus QTAs: first real-world application of prototype</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="release-benchmarking">Release benchmarking<a class="hash-link" href="#release-benchmarking" title="Direct link to heading">​</a></h4><p>Ongoing release benchmarking is a crucial safeguard to <code>cardano-node</code>&#x27;s release cycle from a performance perspective. We&#x27;ve performed and analyzed benchmarks for node versions <code>8.2.x</code> to <code>8.5</code> throughout Q3.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-benchmarks">UTxO-HD benchmarks<a class="hash-link" href="#utxo-hd-benchmarks" title="Direct link to heading">​</a></h4><p>Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-benchmarks">P2P benchmarks<a class="hash-link" href="#p2p-benchmarks" title="Direct link to heading">​</a></h4><p>In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-nomad-cluster">New nomad cluster<a class="hash-link" href="#new-nomad-cluster" title="Direct link to heading">​</a></h4><p>The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received
+various rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest
+of our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it
+ready for production use.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system">New tracing system<a class="hash-link" href="#new-tracing-system" title="Direct link to heading">​</a></h4><p>Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that
+it is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  </p><p>Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating
+end user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc9-performance">GHC9 performance<a class="hash-link" href="#ghc9-performance" title="Direct link to heading">​</a></h4><p>In Q3, a joint investigation with DevX into GHC9&#x27;s behaviour revealed where and how GHC9 misses opportunities for
+optimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable
+those optimizations - which is still being validated.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h4><p>In collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations&#x27;
+performance characteristics. It&#x27;s now applicable, and being applied, to a real-world task - namely
+gathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking:<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h4><p>In Q4, the focus will be on:</p><ul><li>facilitating the next mainnet release</li><li>benchmarking runs in the Conway era</li><li>developing benchmarks / workloads for Conway-exclusive actions</li><li>implementing a specialized benchmark setup for the UTxO-HD on-disk variant</li><li>developing new Plutus benchmarks to safeguard Plutus V3</li><li>benchmarks regarding the rollout of P2P</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h4><p>For certain blocking performance issues we&#x27;ve located the cause, or even found a solution in a cross-team effort. In Q4 we&#x27;ll advance that work to ensure the ongoing
+release cycle for mainnet, as well as make GHC9 become a viable release platform.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system-1">New tracing system<a class="hash-link" href="#new-tracing-system-1" title="Direct link to heading">​</a></h4><p>For the new tracing system, we&#x27;ll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-monitoring">UTxO-HD monitoring<a class="hash-link" href="#utxo-hd-monitoring" title="Direct link to heading">​</a></h4><p>We&#x27;ll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h4><p>From Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h4><p>We will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with <code>cardano-node</code>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-component-qtas-co-development">Consensus component QTAs (co-development)<a class="hash-link" href="#consensus-component-qtas-co-development" title="Direct link to heading">​</a></h4><p>In Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation.</p></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/performance-tracing">performance-tracing</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q3-performance-and-tracing.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-Q2-sre"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">SRE Q2 2023 Update</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/2023-Q3-sre"><div class="pagination-nav__sublabel">Older Post</div><div class="pagination-nav__label">SRE Q3 2023 Update</div></a></nav></main><div class="col col--2"><div class="tableOfContents_bqdL thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#2023-07---2023-09" class="table-of-contents__link toc-highlight">2023-07 - 2023-09</a><ul><li><a href="#main-achievements" class="table-of-contents__link toc-highlight">Main achievements</a></li><li><a href="#next-steps" class="table-of-contents__link toc-highlight">Next steps</a></li></ul></li></ul></div></div></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a aria-current="page" class="sidebarItemLink_mo7H sidebarItemLinkActive_I1ZP" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h1 class="title_f1Hy" itemprop="headline">SRE Q3 2023 Update</h1><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div id="post-content" class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Completion of mainnet relay networking conversion to p2p topology</li><li>Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality</li><li>Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines</li><li>Creation of a nix content addressed packages repository, <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a>:<ul><li>To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells</li></ul></li><li>Creation of a cardano performance benchmarking cluster, <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf</a>:<ul><li>To replace legacy cluster benchmark tooling</li></ul></li><li>Creation of a cardano cluster composition repository, <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a>:<ul><li>For enabling multi-cluster, multi-role cardano network deployments</li></ul></li><li>Creation of a cardano testnets repository, <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a>:<ul><li>Utilizing cardano-parts for testnet deployments</li></ul></li><li>Creation of a sanchonet demo repository, <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a>:<ul><li>Utilizing cardano-parts for fast sanchonet test environment and demo purposes</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with migration of cardano-world testnets to cardano-playground</li><li>Proceed with spinup of mainnet p2p bootstrap cluster</li><li>Scale down mainnet non-p2p legacy cluster at the appropriate time</li></ul></div><footer class="row docusaurus-mt-lg blogPostFooterDetailsFull_mRVl"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div><div class="col margin-top--sm"><a href="https://github.com/input-output-hk/cardano-updates/tree/main/quarterly/2023-Q3-sre.md" target="_blank" rel="noreferrer noopener" class="theme-edit-this-page"><svg fill="currentColor" height="20" width="20" viewBox="0 0 40 40" class="iconEdit_Z9Sw" aria-hidden="true"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></footer></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Blog post page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing"><div class="pagination-nav__sublabel">Newer Post</div><div class="pagination-nav__label">Performance &amp; 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CLI Team Update</a></li></ul></div><div class="col col--4 margin-vert--lg"><h3>2023</h3><ul><li><a href="/cardano-updates/quarterly/2023-Q2-consensus">December 7, 2023<!-- --> - <!-- -->Consensus Q2 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-Q2-network">December 7, 2023<!-- --> - <!-- -->Network Q2 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-Q2-sre">December 7, 2023<!-- --> - <!-- -->SRE Q2 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing">December 7, 2023<!-- --> - <!-- -->Performance &amp; Tracing Q3 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-Q3-sre">December 7, 2023<!-- --> - <!-- -->SRE Q3 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-04-25-consensus">April 25, 2023<!-- --> - <!-- -->Consensus Quarterly Update</a></li><li><a href="/cardano-updates/quarterly/2023-04-04-network">April 4, 2023<!-- --> - <!-- -->Network Q1 2023 Update</a></li><li><a href="/cardano-updates/quarterly/2023-04-03-ledger">April 3, 2023<!-- --> - <!-- -->Ledger Team Update</a></li><li><a href="/cardano-updates/quarterly/2023-01-18-consensus">January 18, 2023<!-- --> - <!-- -->Consensus Quarterly Update</a></li><li><a href="/cardano-updates/quarterly/2023-01-13-network">January 13, 2023<!-- --> - <!-- -->Network Quarterly Update</a></li><li><a href="/cardano-updates/quarterly/2023-01-13-open-source">January 13, 2023<!-- --> - <!-- -->Open-Source Update</a></li></ul></div></div></div></section></main></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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+<?xml version="1.0" encoding="utf-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+    <id>https://input-output-hk.github.io/cardano-updates/quarterly</id>
+    <title>Cardano Development Updates Blog</title>
+    <updated>2023-12-07T21:19:58.000Z</updated>
+    <generator>https://github.com/jpmonette/feed</generator>
+    <link rel="alternate" href="https://input-output-hk.github.io/cardano-updates/quarterly"/>
+    <subtitle>Cardano Development Updates Blog</subtitle>
+    <icon>https://input-output-hk.github.io/cardano-updates/img/favicon.ico</icon>
+    <entry>
+        <title type="html"><![CDATA[Consensus Q2 2023 Update]]></title>
+        <id>2023-Q2-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-consensus"/>
+        <updated>2023-12-07T21:19:58.000Z</updated>
+        <summary type="html"><![CDATA[2023-04 -- 2023-06]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04----2023-06">2023-04 -- 2023-06<a class="hash-link" href="#2023-04----2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished a major prototype refactoring, which includes:<ul><li>A better and finer grained DB lock mechanism.</li><li>Elimination of race conditions.</li><li>Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.</li><li>Architectural simplifications and performance improvements.</li></ul></li><li>We implemented a new package to support db-sync integration with UTxO-HD.</li><li>We ran another set of ad-hoc benchmarks:<ul><li>We uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>.</li><li>The synchronization and replay speed are as expected.</li><li>However, we uncovered memory consumption issues (see figure below).<ul><li>The in-memory backend is consuming more memory than the baseline.</li><li>The LMDB backend shows an unexpected memory usage peak.</li><li>Investigation on these issues is ongoing.</li></ul></li></ul></li><li>We integrated the latest changes in <code>main</code> branch.<ul><li>This required a re-design of the mempool to include the mempool fairness
+improvement.</li></ul></li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks-74f9d76c2602f09652f584cc4d6a0962.png" width="2500" height="1700" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>The Genesis work for this PI focused on an high-priority issue from the IOG Researchers' feedback on the proposal.<ul><li>This particular question was not anticipated when the Q2 PI was planned.</li><li>As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.</li><li>That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.</li></ul></li><li>The IOG Researchers' feedback on the design was very valuable. It had two primary effects.</li><li>Outcome 1: We re-introduced distinct behaviors when the node is "syncing" versus when it is "caught up".<ul><li>This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.</li><li>The additional design complexity is relatively small.</li></ul></li><li>Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.<ul><li>The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.</li><li>All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.</li><li>Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.</li><li>The primary invention was a model for bounding how much benefit the adversary's long-range attack could possibly gain from Praos's natural short forks.</li></ul></li><li>Relevant questions that the IOG Researchers are still assessing.<ul><li>These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.</li><li>Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?</li><li>Question 2: what is the upper bound on how much grinding can improve the adversary's leader schedule within some Genesis window?</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We performed an analysis on number of file descriptors used by Consensus, this
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough, thus improving the user (eg node
+operator) experience.</li><li>We implemented a mempool fairness improvement, by which transactions are
+guaranteed to be processed irrespective of their size.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in followers logic, which was discovered by our <code>QuickCheck</code>
+property tests.</li><li>We created an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB
+server</a>. This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> tool, which can be used in disaster recovery and benchmarking scenarios.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/161" target="_blank" rel="noopener noreferrer">benchmarks comparison tool</a> that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance <em>improvements</em> introduced by the Ledger team in version <code>0.6.0.0</code> of Consensus wrt version <code>0.5.0.0</code>.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-beacon-graph-ded65e814bfe6d927faa1c5c66bbbfad.png" width="1840" height="1372" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released <code>fs-sim</code> as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.</li><li>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new repository</a>, splitting
+it from the <code>ouroboros-network</code> repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).</li><li>We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).</li><li>We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>We will <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">get UTxO-HD ready for handover</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Q2 2023 Update]]></title>
+        <id>2023-Q2-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-network"/>
+        <updated>2023-12-07T21:19:58.000Z</updated>
+        <summary type="html"><![CDATA[2023-04 - 2023-06]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised the design of eclipse evasion and implemented its mechanism which
+relays on connectivity to <em>big ledger peers</em>.  <em>Big ledger peers</em> are the
+largest ledger peers which accumulate 90% of stake (currently there are less
+than 1000 of them).  The outbound governor has new targets for <em>known</em>,
+<em>established</em> and <em>active</em> big ledger peers which work in a similar way that
+such targets work for ledger peers.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4662" target="_blank" rel="noopener noreferrer">ouroboros-network#4662</a> PR is
+currently in review.</p><p>As part of this work we also identified a bug which would prevent a node to
+connect to itself.  Such connections are not easily detectable and are expected
+to be dropped by the churn mechanism, nonetheless they should not be buggy.
+The failure was discovered thanks to our e2e simulation of diffusion using
+<code>io-sim</code> &amp; property based testing.</p><p>The PR also refactors the heart of the <code>ouroboros-network</code> interface reducing
+technical debt that would otherwise accumulate.</p><p>We also identified a possible improvement in the churn mechanism, which will be
+implemented in Q3.  Churn needs to await for peers to terminate, we can
+improve the synchronisation. <!-- -->[ouroboros-network#4617]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ecosystem-p2p-deployment-progress">Ecosystem P2P Deployment Progress<a class="hash-link" href="#ecosystem-p2p-deployment-progress" title="Direct link to heading">​</a></h4><p>We reached <strong>50% of stake in hands of SPOs who run at least on P2P relay</strong>.  Now
+also Emurgo and CF are running some P2P relays. Also 20% of IOG relays are
+running in P2P mode.</p><p><img loading="lazy" alt="P2P Progress" src="/cardano-updates/assets/images/2023-07-06-p2p-progress-194a909569eebb016b1f24fb8941e2cc.png" width="1024" height="768" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented <em>bootstrapping for peer sharing</em> (also known as light peer
+sharing).  New downstream (inbound) peers are now added to the <em>known peers</em> of
+the <em>outbound governor</em>.  Together with peer sharing this allows for non
+registered relays to propagate through the network. <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">ouroboros-network#3596</a></p><p><em>Please note that peer sharing is disabled by default and is not considered safe
+until Bootstrap Peers (see below) or Genesis is implemented.</em></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="diffusion-p2p">Diffusion (P2P)<a class="hash-link" href="#diffusion-p2p" title="Direct link to heading">​</a></h4><ul><li><p>We designed a feature which will reduce the load on IOG relays (in future
+also run by CF &amp; Emurgo).  The feature consists of two parts.  A new source
+of peers called <em>bootstrap peers</em> (obtained from via an https request), the
+ability to switch from bootstrap peers to ledger peers if the node is synced
+(we are collaborating with the consensus team on the interface <a href="https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md" target="_blank" rel="noopener noreferrer">Bootstrap
+Peers IER</a>).   This feature will be completed in Q3.
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">ouroboros-network#4530</a></p></li><li><p>We published a blog post about <a href="https://engineering.iog.io/2023-06-28-p2p" target="_blank" rel="noopener noreferrer">P2P design &amp; implementation</a>.</p></li><li><p>Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">ouroboros-network#4559</a>.</p></li><li><p>We merged changes which allow the consensus layer to start / stop block
+forging thread.  This will allow to deploy P2P block producing nodes which
+serve as a live backup node. <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a></p></li><li><p>We fixed a few bugs in local root peers DNS resolution service:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4583" target="_blank" rel="noopener noreferrer">ouroboros-network#4583</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4571" target="_blank" rel="noopener noreferrer">ouroboros-network#4571</a>.</p></li><li><p>We limited concurrency of DNS name resolutions: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">ouroboros-network#4596</a>.</p></li><li><p>Galois Inc implemented query option for Handshake: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</p></li><li><p>We fixed handshake query timeout: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">ouroboros-network#4608</a>.</p></li><li><p>We implemented warm valency for local root peers.  This can help when using
+DNS names in local root peers which resolve to many IP addresses. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a></p></li><li><p>We merged handshake changes which allow query protocol versions.  Thanks to
+James Parker from Galois Inc.: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a>.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-improvements--developments">Other Improvements &amp; Developments<a class="hash-link" href="#other-improvements--developments" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cddl">CDDL<a class="hash-link" href="#cddl" title="Direct link to heading">​</a></h4><ul><li><p>We added <code>node-to-node</code> and <code>node-to-client</code> CDDL specs / tests for encoding
+of <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>.  </p></li><li><p>We clarified an inconsistency between CDDL spec and implementation which is
+highly polymorphic.  We designed and implemented a fix for <code>tx-submission</code>
+and <code>local-tx-submission</code> mini-protocols.  Specs for other mini-protocols will
+be improved at a later stage. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">ouroboros-network#4580</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ping"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping" target="_blank" rel="noopener noreferrer">Cardano Ping</a><a class="hash-link" href="#cardano-ping" title="Direct link to heading">​</a></h4><ul><li><p><code>cardano-ping</code> command was deprecated in favour of <code>cardano-cli ping</code> (the
+transition was done by the <code>node</code> team).</p></li><li><p>Support for <code>node-to-client</code> protocol using Unix sockets.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">ouroboros-network#4601</a></p></li><li><p>Support for <code>NodeToNodeV_11</code> and <code>NodeToClientV_16</code>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4587" target="_blank" rel="noopener noreferrer">ouroboros-network#4587</a></p></li><li><p><code>cardano-cli ping</code> is now using <em>ISO8601</em> format for timestamps.  Formatting of
+messages was improved. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">ouroboros-network#4593</a></p></li><li><p><code>cardano-cli ping</code> has a new <code>--query-versions</code> flag which allows to query
+supported versions by the remote node.  This is supported by
+<code>cardano-node-8.1.0</code>. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">ouroboros-network#4589</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">cardano-node#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim"><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">IOSim</a><a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><ul><li><p>We fixed timeouts &amp; delays in <code>io-classes</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</p></li><li><p>We released <code>strict-stm-1.1.0.1</code> on Hackage which fixed a bug in package
+description file: <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">io-sim#101</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols"><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer">Typed Protocols</a><a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h4><ul><li>We published haddocks of <code>typed-protocols</code> at
+<a href="https://input-output-hk.github.io/typed-protocols" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/typed-protocols</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-client"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client" target="_blank" rel="noopener noreferrer">Cardano Client</a><a class="hash-link" href="#cardano-client" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in <code>cardano-client-0.1.0.2</code> release which results in clients
+(e.g. <code>db-sync</code>) negotiate an experimental protocol version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>After the split between consensus &amp; network, we made <code>cardano-client</code>
+independent of <code>ouroboros-consensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</p></li><li><p>We wrap all exceptions in <code>DiffusionError</code>: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">ouroboros-network#4537</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ci-improvements">CI improvements<a class="hash-link" href="#ci-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We switched to use GitHub merge queues in <code>ouroboros-network</code>, <code>io-sim</code> and
+<code>typed-protocols</code> repositories; <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4546" target="_blank" rel="noopener noreferrer">ouroboros-network#4546</a>.</p></li><li><p>We cleaned &amp; updated scripts which run on CI.</p></li><li><p>We implemented a script to verify &amp; release packages on CHaP; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">ouroboros-network#4542</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">ouroboros-network#4573</a>.</p></li><li><p>We implemented a new CI script and cleaned existing ones:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">ouroboros-network#4572</a>.</p></li><li><p>We don't install cryptographic libraries on CI anymore as none of our
+packages requires them; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">ouroboros-network#4539</a>.</p></li><li><p>Improved caching of dependencies: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">ouroboros-network#4553</a>.</p></li><li><p>We made it possible to trigger building haddock manually:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">ouroboros-network#4549</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-94--96">GHC 9.4 &amp; 9.6<a class="hash-link" href="#ghc-94--96" title="Direct link to heading">​</a></h4><p>We made all repositories under our control compile with <code>ghc-9.4</code> and <code>ghc-9.6</code>
+which includes <code>ouroboros-network</code>, <code>io-sim</code>, <code>typed-protocols</code> and
+<code>Win32-network</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will continue towards our <a href="https://github.com/orgs/input-output-hk/projects/39/views/30" target="_blank" rel="noopener noreferrer">aspirational roadmap</a>.</p><ul><li>We will continue reviewing eclipse evasion.</li><li>As <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a> was merged, we are making progress towards
+releasing P2P on block production nodes.  We hope to analyse performance
+regression on such nodes observed on the benchmarking cluster. <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=6875505" target="_blank" rel="noopener noreferrer">roadmap-3887</a></li><li>We are also focused on <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=8920085" target="_blank" rel="noopener noreferrer">roadmap-3969</a>. Note that it was expanded in Q2.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Q2 2023 Update]]></title>
+        <id>2023-Q2-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-sre"/>
+        <updated>2023-12-07T21:19:58.000Z</updated>
+        <summary type="html"><![CDATA[2023-04 - 2023-06]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Expanding the darwin CI cluster and adding aarch64 builder support</li><li>Adding bare metal capability to bitte clusters</li><li>Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality</li><li>Creation of pool performance analysis queries and scripting</li><li>Migration of testnet metadata server to cardano-world</li><li>Cardano shelley qa migration to cardano-world</li><li>Cardano sanchonet environment spin up to test Conway era functionality</li><li>Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with the conversion of mainnet to using p2p topology</li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Performance & Tracing Q3 2023 Update]]></title>
+        <id>2023-Q3-performance-and-tracing</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q3-performance-and-tracing"/>
+        <updated>2023-12-07T21:19:58.000Z</updated>
+        <summary type="html"><![CDATA[2023-07 - 2023-09]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><ul><li>Release benchmarking</li><li>Developing and running UTxO-HD benchmarks - in-memory flavour</li><li>P2P benchmarks, facilitating rollout</li><li>Production-readiness of the new Nomad cluster has been reached</li><li>Optimization of and introspection capability for the new tracing system</li><li>GHC9 performance investigation (and possible remedy)</li><li>Conensus QTAs: first real-world application of prototype</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="release-benchmarking">Release benchmarking<a class="hash-link" href="#release-benchmarking" title="Direct link to heading">​</a></h4><p>Ongoing release benchmarking is a crucial safeguard to <code>cardano-node</code>'s release cycle from a performance perspective. We've performed and analyzed benchmarks for node versions <code>8.2.x</code> to <code>8.5</code> throughout Q3.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-benchmarks">UTxO-HD benchmarks<a class="hash-link" href="#utxo-hd-benchmarks" title="Direct link to heading">​</a></h4><p>Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-benchmarks">P2P benchmarks<a class="hash-link" href="#p2p-benchmarks" title="Direct link to heading">​</a></h4><p>In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-nomad-cluster">New nomad cluster<a class="hash-link" href="#new-nomad-cluster" title="Direct link to heading">​</a></h4><p>The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received
+various rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest
+of our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it
+ready for production use.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system">New tracing system<a class="hash-link" href="#new-tracing-system" title="Direct link to heading">​</a></h4><p>Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that
+it is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  </p><p>Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating
+end user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc9-performance">GHC9 performance<a class="hash-link" href="#ghc9-performance" title="Direct link to heading">​</a></h4><p>In Q3, a joint investigation with DevX into GHC9's behaviour revealed where and how GHC9 misses opportunities for
+optimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable
+those optimizations - which is still being validated.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h4><p>In collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations'
+performance characteristics. It's now applicable, and being applied, to a real-world task - namely
+gathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking:<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h4><p>In Q4, the focus will be on:</p><ul><li>facilitating the next mainnet release</li><li>benchmarking runs in the Conway era</li><li>developing benchmarks / workloads for Conway-exclusive actions</li><li>implementing a specialized benchmark setup for the UTxO-HD on-disk variant</li><li>developing new Plutus benchmarks to safeguard Plutus V3</li><li>benchmarks regarding the rollout of P2P</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h4><p>For certain blocking performance issues we've located the cause, or even found a solution in a cross-team effort. In Q4 we'll advance that work to ensure the ongoing
+release cycle for mainnet, as well as make GHC9 become a viable release platform.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system-1">New tracing system<a class="hash-link" href="#new-tracing-system-1" title="Direct link to heading">​</a></h4><p>For the new tracing system, we'll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-monitoring">UTxO-HD monitoring<a class="hash-link" href="#utxo-hd-monitoring" title="Direct link to heading">​</a></h4><p>We'll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h4><p>From Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h4><p>We will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with <code>cardano-node</code>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-component-qtas-co-development">Consensus component QTAs (co-development)<a class="hash-link" href="#consensus-component-qtas-co-development" title="Direct link to heading">​</a></h4><p>In Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation.</p>]]></content>
+        <author>
+            <name>Michael Karg</name>
+            <uri>https://github.com/mgmeier</uri>
+        </author>
+        <category label="performance-tracing" term="performance-tracing"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[SRE Q3 2023 Update]]></title>
+        <id>2023-Q3-sre</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q3-sre"/>
+        <updated>2023-12-07T21:19:58.000Z</updated>
+        <summary type="html"><![CDATA[2023-07 - 2023-09]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Completion of mainnet relay networking conversion to p2p topology</li><li>Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality</li><li>Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines</li><li>Creation of a nix content addressed packages repository, <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a>:<ul><li>To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells</li></ul></li><li>Creation of a cardano performance benchmarking cluster, <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf</a>:<ul><li>To replace legacy cluster benchmark tooling</li></ul></li><li>Creation of a cardano cluster composition repository, <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a>:<ul><li>For enabling multi-cluster, multi-role cardano network deployments</li></ul></li><li>Creation of a cardano testnets repository, <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a>:<ul><li>Utilizing cardano-parts for testnet deployments</li></ul></li><li>Creation of a sanchonet demo repository, <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a>:<ul><li>Utilizing cardano-parts for fast sanchonet test environment and demo purposes</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with migration of cardano-world testnets to cardano-playground</li><li>Proceed with spinup of mainnet p2p bootstrap cluster</li><li>Scale down mainnet non-p2p legacy cluster at the appropriate time</li></ul>]]></content>
+        <author>
+            <name>John Lotoski</name>
+            <uri>https://github.com/johnalotoski</uri>
+        </author>
+        <category label="sre" term="sre"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Quarterly Update]]></title>
+        <id>2023-04-25-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-25-consensus"/>
+        <updated>2023-04-25T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Consensus Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished the testing activities for the prototype, which involved adding
+new tests, and fixing and enabling temporarily disabled tests.</li><li>We spent a substantial amount of effort refactoring and cleaning the
+prototype.</li><li>We audited the UTxO HD prototype to make sure it can accommodate the migration
+of other tables (eg stake-keys registration) from memory to disk. The result
+of the audit was positive.</li><li>We ran ad-hoc benchmarks for reading keys and flushing values to disk. No
+unexpected costs found.</li><li>We ran the first system level benchmarks. The performance regressions reported
+were due to an unrealistic snapshotting rate. We need to re-run them again
+after we design a more fine grained locking mechanism.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We elaborated a roadmap of the remaining work for Genesis.</li><li>We presented the design to the IOG Researchers and PNSol on February 20. The
+design was well received. We updated the Genesis design with the researcher's
+feedback.<ul><li>We plugged the new DoS vector identified during the aforementioned
+presentation.</li></ul></li><li>We developed a generator for adversarial leader schedules that satisfy key
+Ouroboros properties, which will be used to test the Genesis design.<ul><li>The generator enables use of smaller Ouroboros parameters, which makes
+extrema more likely and counterxamples easier interpret.</li></ul></li><li>We wrote up the latest design iteration.</li><li>We continued benchmarking the Chain Sync Jumping prototype. In particular:<ul><li>We debugged the prototype's performance regression, and unmasked the
+actual cause by patching our initial theory (bad queuing behavior)</li><li>We identified and validated the actual cause (a pathological case in
+BlockFetch tiebreaker).</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother
+to serve a local immutable DB.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We integrated the Conway era into consensus.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug with followers, which was discovered by property tests.</li><li>We developed a DSL for specifying and running ChainDB test cases.</li><li>We fixed failing tests with iterators.</li><li>We created micro-benchmarks for adding transactions to the mempool.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released a new technical documentation site for consensus.</li><li>We factored out several packages to external repositories. Some of this work
+originated in the UTxO HD workstream.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/28</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/33" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/33</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/32" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/32</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/31" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/31</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Design Consensus side of hardfork-enactment in the Voltaire phase
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4180" target="_blank" rel="noopener noreferrer">#4180</a>).</li><li>Estimate the number of file descriptors Consensus needs
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/20" target="_blank" rel="noopener noreferrer">#20</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define
+for consensus. Pick one and implement benchmarks for it.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Onboard a new team member.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Q1 2023 Update]]></title>
+        <id>2023-04-04-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-04-network"/>
+        <updated>2023-04-04T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[2023-01 - 2023-03]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gradual-dynamic-p2p-release-on-mainnet">Gradual dynamic P2P release on mainnet<a class="hash-link" href="#gradual-dynamic-p2p-release-on-mainnet" title="Direct link to heading">​</a></h4><p>We released two version of <code>cardano-node</code> with dynamic P2P capabilities:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6" target="_blank" rel="noopener noreferrer"><code>1.35.6</code></a><ul><li>we found and fixed a bug in exception handling in <code>peer-state-actions</code><a href="https://github.com/input-output-hk/ouroboros-network/pull/4357" target="_blank" rel="noopener noreferrer">pull-4357</a></li><li>we found and fixed a busy loop when demoting a peer from hot to warm <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">pull-4385</a> </li></ul></li><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7" target="_blank" rel="noopener noreferrer"><code>1.35.7</code></a><ul><li>includes interoperability in the legacy non-p2p network stack <a href="https://github.com/input-output-hk/outoboros-network/pull/4467" target="_blank" rel="noopener noreferrer">pull-4467</a></li></ul></li><li>we fixed a busy loop of demotion &amp; promotions: <code>warm -&gt; hot -&gt; warm</code>[pull-4485]<!-- --> /it will be included in <code>cardano-node-8.0.0</code> release/.</li></ul><p>Currently there are more than 200 P2P relays on mainnet.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented /peer sharing/ <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull-4019</a> which will be available as an
+experimental feature in one of the future <code>cardano-node</code> releases.</p><p>We implemented /light peer sharing/, e.g. adding inbound connections to the set
+of known peers of the outbound governor, which allows to bootstrap relays not
+registered on chain.  This complements peer sharing.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4277" target="_blank" rel="noopener noreferrer">pull-4277</a> is in
+late review stages.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised design of eclipse evasion and we started implementing it.  We
+have an initial implementation (not merged). We are in the process of extending
+our test suite to cover new implementation details: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>, <a href="https://github.com/input-output-hk/outoboros-network/pull/4462" target="_blank" rel="noopener noreferrer">pull-4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h4><p>Galois has been making progress on <em>Cardano Network Service Assurance</em> project.</p><ul><li><p>In cardano-node, they have developed a <code>datapoint</code> abstraction that creates
+a queue of (existing) log events, they now have two such <code>datapoint</code>s (of log
+events) implemented.</p></li><li><p>They have developed a <code>datapoint</code> client executable that can connect to a node
+which serves the "new tracing".</p></li><li><p>They have been exploring approaches for the consolidation and analysis of
+<code>datapoint</code> data to extract actionable network health status.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li>We made it possible to configure accepted connections limit <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">pull-4902</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We fixed a bug in network simulation implementation of TCP simultaneous open <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">pull-4265</a>.</p></li><li><p>We introduced header-body split in the diffusion simulation <a href="https://github.com/input-output-hk/outoboros-network/pull/4419" target="_blank" rel="noopener noreferrer">pull-4419</a> (in review).</p></li><li><p>We introduced initiator only nodes in the diffusion simulation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4280" target="_blank" rel="noopener noreferrer">pull-4280</a>.</p></li><li><p>We fixed a connection-manager test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue-4370</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We refactored <code>Snocket</code> interface decoupling it from the multiplexer
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">pull-4260</a>. This simplified some aspects of the KES agent implementation.</p></li><li><p>We introduces a record for CBOR codecs which are used for various data
+structures by mini-protocol codecs <a href="https://github.com/input-output-hk/outoboros-network/pull/4430" target="_blank" rel="noopener noreferrer">pull-4430</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h4><ul><li>We explained some limitations of CDDL in our technical report <a href="https://github.com/input-output-hk/ouroboros-network/pull/4351" target="_blank" rel="noopener noreferrer">pull-4351</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h4><ul><li>We fixed implementation of <code>MVar</code>'s <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">pull-70</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nothunks">NoThunks<a class="hash-link" href="#nothunks" title="Direct link to heading">​</a></h4><ul><li>We published a new version of <a href="https://hackage.haskell.org/package/nothunks" target="_blank" rel="noopener noreferrer"><code>nothunks</code></a> library to Hackage.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Finish implementation &amp; testing of eclipse evasion <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>.</li><li>Optimise connectivity to peers behind firewall <a href="https://github.com/input-output-hk/ouroboros-network/issues/4381" target="_blank" rel="noopener noreferrer">issue-4381</a>.</li><li>Finish the work on enabling block production dynamically to allow using P2P
+on block producers <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">issue-3159</a>.</li><li>If time permits we would like also to reserve some time for finishing
+publication of <code>io-sim</code> to Hackage.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2023-04-03-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-03-ledger"/>
+        <updated>2023-04-03T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Ledger Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cips">CIPs<a class="hash-link" href="#cips" title="Direct link to heading">​</a></h4><ul><li><strong>Entering the Voltaire phase</strong> -
+CIP-1694 received a major update after participation in the design has expanded to
+more and more people, including those who attended the Colorado workshop.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>.</li><li><strong>Ledger CIP category</strong> -
+The ledger team continues to embrace the CIP process, and has begun the process of
+registering the ledger as an official CIP category.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP-84</a>.</li><li><strong>Ledger serialization</strong> -
+A CIP for the ledger serialization deprecation cycle has been accepted.
+See <a href="https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080" target="_blank" rel="noopener noreferrer">CIP-80</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="formal-ledger-model">Formal ledger model<a class="hash-link" href="#formal-ledger-model" title="Direct link to heading">​</a></h4><p>Our new formal specifications backed by Agda have seen a lot of progress.
+The majority of the ideas in CIP-1694 are now present, and we have made enough progress
+that we can now safely say that the PDF produced by the Agda model will be the
+official ledger specification for the Conway ledger era.
+See <a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">the repository</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h4><p>Progress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.
+The major component still missing is the DRep stake distribution, which still presents some
+technical challenges.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="drep-stake-distribution-computation">DRep stake distribution computation<a class="hash-link" href="#drep-stake-distribution-computation" title="Direct link to heading">​</a></h4><p>Adding another large stake distribution to the ledger state must proceed with caution.
+We do not want the memory used by the node to increase too much,
+and performance problems can lead to reduced block production.
+We have prototyped, tested, and benchmarked several approaches that could give us
+the current DRep stake distribution at each epoch boundary.
+This has very important implications, since we want every ADA holder to be able to at any
+time (such as during a contentious vote) register themselves as a DRep and still have time
+to vote themselves on the issue.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h4><p>The ledger has made some wonderful improvements over the past six months,
+but which entail a significant amount of integration efforts:</p><ul><li>Our new versioned CBOR schemes</li><li>Individual deposit tracking</li><li>An improved cross-era interface utilizing lenses</li><li>A new ledger API</li><li>Re-arranging the ledger stake in preparation for CIP-1694</li><li>Versioning our Haskell packages
+using <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaPs</a>.</li><li>Consistent conventions for variable names</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a>]
+[<a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/378" target="_blank" rel="noopener noreferrer">pull-378</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/376" target="_blank" rel="noopener noreferrer">pull-376</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/373" target="_blank" rel="noopener noreferrer">pull-373</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/370" target="_blank" rel="noopener noreferrer">pull-370</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/361" target="_blank" rel="noopener noreferrer">pull-361</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/4976" target="_blank" rel="noopener noreferrer">pull-4976</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">pull-5013</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h4><p>Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.
+Deposits were returned according to the current protocol parameters.
+When the values of these two protocol parameters change, the deposit pot
+is adjusted by adding to, or removing from, the reserves.</p><p>This has several problems:</p><ul><li>Most people expect a deposit to be paid back exactly.</li><li>We cannot increase the deposit amount once the reserves hits zero.</li><li>If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.</li><li>Because of the problems above, it is going to be incredibly hard to ever change the values.</li><li>There is a serious issue involving hard forks.
+The consensus layer makes the decision about whether or not to enact a hard fork based on
+the protocol parameter update state two stability windows before the end of the epoch.
+However, the ledger will reject a protocol parameter update on the epoch boundary
+if the deposit pot adjustments cannot be reconciled with the reseve pot.
+This means that if quorum is met regarding changing the major protocol version,
+but the update is rejected on the epoch boundary, consensus will change the era but the
+ledger will not change the major protocol version, leaving the ledger in a split-brain state.</li></ul><p>Because we never actually changed the values of the two deposits amounts in the protocol parameters
+on mainnet, we were able to retroactively change the behavior.
+We made the following changes:</p><ul><li>Individual deposits are tracked in the <code>DState</code>.</li><li>The amount deposited is always returned.</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-ledger-api">New ledger API<a class="hash-link" href="#new-ledger-api" title="Direct link to heading">​</a></h4><p>We have significantly built up the ledger API.
+We will eventually replace much of the <code>cardano-api</code> in the node repository with this ledger API.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h4><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We have a new declaritive infrastructure for building constraint-based generators,
+which instead generate a random ledger state representative of not just an initial state,
+but also those representative of the end result of a long sequence of valid blocks.
+Moreover, these generators are very fast and are much more random than our old generators.
+Before we can start using them for our existing property tests, however, we still need to
+expand them to generate a valid block for a given ledger state.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><p>We continued to address technical debt as much as we can.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3323" target="_blank" rel="noopener noreferrer">pull-3323</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3338</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a>]</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="critical-fixes">Critical fixes<a class="hash-link" href="#critical-fixes" title="Direct link to heading">​</a></h5><p>We fixed two critical issues:</p><ul><li>Growing block production delay on the epoch boundary: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a>]</li><li>Unexpected node shutdown from <code>balanceR</code>: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li><strong>Conway spec</strong> -
+Complete the first version of the conway formal specification.</li><li><strong>DRep stake distribution</strong> -
+Have the ledger compute the DRep stake distribution with acceptible performance.</li><li><strong>Devnet ready</strong> -
+Have the Haskell implementation of the conway era in sync with the formal specification,
+and integrate the changes with consensus and node.
+All the details might not be finalized, but the wire specification and the API should
+be stable so that conway can be placed on a devnet for tool builders to start integrating with.</li><li><strong>Plutus V3</strong> -
+Integrate Plutus V3 into the ledger, including a new script context which supports DReps.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h3><p>This quarterly report was based off of the following fortnightly ones:</p><ul><li><a href="/cardano-updates/quarterly/2023-01-05-ledger">2023-01-05</a></li><li><a href="/cardano-updates/quarterly/2023-01-19-ledger">2023-01-19</a></li><li><a href="/cardano-updates/quarterly/2023-02-02-ledger">2023-02-02</a></li><li><a href="/cardano-updates/quarterly/2023-02-17-ledger">2023-02-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-03-ledger">2023-03-03</a></li><li><a href="/cardano-updates/quarterly/2023-03-17-ledger">2023-03-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-31-ledger">2023-03-31</a></li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Quarterly Update]]></title>
+        <id>2023-01-18-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-18-consensus"/>
+        <updated>2023-01-18T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Consensus Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-12---2023-01">2022-12 - 2023-01<a class="hash-link" href="#2022-12---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><p>The prototype is feature complete and thoroughly tested at the consensus level.
+In particular, we invested a lot of time in writing property-test for the
+mempool, and other crucial new parts of the prototype. Now we are ready to run
+integration tests and system-level benchmarks.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><p>We identified and fixed a slowdown in cross-era forecasting that was inhibiting
+our efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%
+speedup in full sync times in the baseline.</p><p>We also started prototyping a self-contained implementation of the Genesis
+dynamics (in particular of the parts intentionally not part of the ChainSync
+Jumping prototype) that furthered our understanding of subtleties and edge
+cases.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We worked on designing integration of new VRF and KES crypto into consensus.<ul><li><code>Crypto</code> class was split into two parts: <code>Crypto</code> and <code>HeaderCrypto</code>.</li><li>With the Ledger team's help, we refactored <code>cardano-ledger</code> to use a proxy
+type for VRF.</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>PR went through its second review round. It is about to be merged, but it got
+delayed due to people's availability during Christmas break.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We improved the capabilities of our <code>io-sim</code> library, which is key for testing
+and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger, which is important
+for reducing memory consumption of the Cardano node.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We added a tutorial on how to instantiate the Consensus layer to run custom
+ledgers. This should be a valuable resource to people looking to roll their
+own custom blockchain (either for commercial or research purposes).</li><li>We added an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Evaluate the extensibility of the prototype. Moving the UTxO to disk is only
+the first step towards reducing the memory requirements of Cardano node, and
+ensuring its long term sustainability. In the future, we plan on moving other
+large maps, such as delegation maps. The prototype should be able to
+accommodate these changes without any major modifications.</li><li>Start the integration with other downstream components, such as the wallet and
+db-sync. The idea is to identify and address any potential pain points that
+might arise during this integration.</li><li>Run integration tests and system-level benchmarks.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Finish benchmarking and tuning the fast-path ChainSync Jumping prototype</li><li>Expand and optimize the self-contained implementation of the Disconnect Rule
+(including density comparisons and the LoE)</li><li>Develop documentation and smoke tests for these components.</li><li>Start modifying the ChainSync Client for the LoP and LoR.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Help the Network team with diagnosing performance regression in block
+production.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Fix property-test failures concerning iterators (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3999" target="_blank" rel="noopener noreferrer">#3999</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>).</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Finish <a href="https://github.com/input-output-hk/ouroboros-network/issues/4145" target="_blank" rel="noopener noreferrer">mapping consensus</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-2">UTxO HD<a class="hash-link" href="#utxo-hd-2" title="Direct link to heading">​</a></h4><ul><li>Moving other parts of the ledger state to disk might require a major redesign
+of the prototype. For instance, if it turns out that the epoch change rules
+require access to the <em>full</em> ledger state. If this is the case, we might
+accept this risk and do the redesign after the initial release of UTxO-HD.</li><li>Integration with downstream clients might require more work than we
+anticipate.</li><li>Access to the benchmarking's team time and resources.</li><li>Benchmarking results might show significant performance degradation, which
+will require additional work if such performance degradation is not accepted
+by other stakeholders.</li><li>The prototype's performance might not be accepted by other stakeholders. Here
+we need to clearly communicate that this is necessary to ensure that as the
+blockchain size grows, the node can operate within reasonable memory
+constraints.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Quarterly Update]]></title>
+        <id>2023-01-13-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-13-network"/>
+        <updated>2023-01-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>The primary goal of the networking team was to focus on the single relay
+release of P2P.  We fixed a number of small late bugs, and concluded QA
+&amp; performance testing.  Although it was discovered a regression in performance
+of  block production when P2P is enabled, relaying with P2P performs better
+comparing to a non p2p.  We concluded that this is not a blocker for the Single
+Relay Release which is planned shortly.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">Peer sharing</a> has gone through review and final review is
+just being done right now.  After merging it will still be disabled (hidden
+behind a flag) as it's not safe without eclipse evasion.  We started
+implementing light peer sharing (i.e. include inbound peers into known peer set
+of the outbound governor).</p><p>We started a detailed eclipse evasion design, it will continue in the next
+quarter.</p><p>We also made a major revision of package structure of the network packages.  We
+ended up with a very clean dependency graph (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">pr #4155</a>).</p><p>Armando Santos delivered a talk at the <a href="https://sites.uclouvain.be/OPODIS2022/armando-details.html" target="_blank" rel="noopener noreferrer">ODOPIS 2022</a> conference on principles
+of distributed systems in Brussels.  The slides are available <a href="https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Neil Davies gave an invited seminar on <code>DeltaQ</code> at Université Catholique de
+Louvain.</p><p>We also found and fixed a few of bugs:</p><ul><li><p>a bug in keep alive mini-protocol which resulted in warm to cold transitions
+to be always executed through a timeout path rather than do a clean demotion
+(<!-- -->[pr #4168]<!-- -->).</p></li><li><p>fixed an assetion failure in the outbound governor (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>) </p></li></ul><ul><li>we fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will work towards the next release of P2P for block producer nodes.  This includes:</p><ul><li>analysing performance regression for BP nodes when using P2P</li><li>finish the work on controlling the block forger through node kernel (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a>)</li><li>address <a href="https://github.com/input-output-hk/ouroboros-network/issues/3907" target="_blank" rel="noopener noreferrer">issue #3907</a> and write a script to analyse deployment of P2P relays</li></ul><p>We would like also to push forward eclipse evasion.   Although most of the work
+has be done already the release of <code>io-sim</code> on <code>Hackage</code> will happen in the
+next quarter.</p><p>We would also like to address <a href="https://github.com/input-output-hk/ouroboros-network/issues/4244" target="_blank" rel="noopener noreferrer">chain-sync timeout issue</a> recently
+diagnosed by Karl Knutsson.</p><p>If time permits we would also like to address some technical debt, especially:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3387" target="_blank" rel="noopener noreferrer">enable nothunk in diffusion tests</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4085" target="_blank" rel="noopener noreferrer">refactor diffusion testnet simulation</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><p>The performance regression for block producer with P2P needs to be investigated
+in the near future.  This is blocker for the release of P2P on BP nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-ouroboros-network">Contributions to Ouroboros-Network<a class="hash-link" href="#contributions-to-ouroboros-network" title="Direct link to heading">​</a></h4><ul><li>We added <code>TraceDemoteLocalAsynchronous</code>, which enables notification of critical issues for SPOs</li><li>We fixed <code>cardano-ping</code> compatibility with <code>NodeToNodeV_10</code> (P2P, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">pr #4165</a>)</li><li>We fixed a bug in demotion peers to cold which affected P2P nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334" target="_blank" rel="noopener noreferrer">commit-61058aa5c2</a>)</li><li>Karl Knutsson enhanced <code>SendFetchRequest</code> (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47" target="_blank" rel="noopener noreferrer">commit-bb1c3dddee</a>), open-source contribution)</li><li>We turned <code>SizeInBytes</code> into a newtype.</li><li>We extended <code>CONTRIBUTING.md</code>, <code>README.md</code>, added <code>CODE_OF_CONDUCT</code>.</li><li>We fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li><li>We fixed a simulation bug found in <a href="https://github.com/input-output-hk/ouroboros-network/issues/4258" target="_blank" rel="noopener noreferrer">issue #4258</a></li><li>[pr #4168]</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-cardano-node">Contributions to Cardano-Node<a class="hash-link" href="#contributions-to-cardano-node" title="Direct link to heading">​</a></h4><ul><li>We maintained the Single Relay Release <a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">pr #4612</a>, (e.g. fixing CI issues,
+Rebasing it when necessary, publishing packages to Cardano Haskell Packages);</li><li>We enhanced <code>JSON</code> serialisation / deserialisation of <code>NodeToNodeVersion</code> and <code>NodeToClientVersion</code>;</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-iosim">Contributions to IOSim<a class="hash-link" href="#contributions-to-iosim" title="Direct link to heading">​</a></h4><ul><li>We started to use Cardano Haskell Packages for <code>IOSim</code> (<a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pr #48</a>)</li><li>We updated change log files</li><li>We added support of <code>ghc-9.4</code> (<a href="https://github.com/input-output-hk/io-sim/pull/50" target="_blank" rel="noopener noreferrer">pr #50</a>)</li></ul><p>We also addressed the following issues in <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> in order to prepare the package for publication on Hackage:</p><ul><li>refactored <code>io-classes</code> timers API (<a href="https://github.com/input-output-hk/io-sim/issues/46" target="_blank" rel="noopener noreferrer">issue #46</a>);</li><li>created a new package <code>si-timers</code> which exposes an interface using SI units
+and is safe on 32-bit systems (<a href="https://github.com/input-output-hk/io-sim/issues/59" target="_blank" rel="noopener noreferrer">issue #59</a>);</li><li>added monad transformers instances for classes defined in <code>io-classes</code> (<a href="https://github.com/input-output-hk/io-sim/issues/58" target="_blank" rel="noopener noreferrer">issue #58</a>);</li><li>created <code>io-classes-mtl</code> package which includes (experimental) instances for monad transformers;</li><li>provide <code>MonadMonotonicTimeNSec</code> in <code>io-classes</code> and <code>MonadMonotonicTime</code> in <code>si-timers</code> (so that <code>io-classes</code> follow the <code>base</code> package);</li><li>added  <code>registerCancellableDelay</code> in <code>si-timers</code> (which allowed us to hide fancy timer api and clean <code>io-classes</code>)</li><li>added support for <code>js_HOST_ARCH</code> (the new GHC JS backend)</li></ul><p>Note the <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> contains almost 40 commits, and was a major step forward for
+<code>io-sim</code> ecosystem.  We also prepared a draft <a href="https://github.com/input-output-hk/cardano-node/pull/4281" target="_blank" rel="noopener noreferrer">pr #4281</a> which updates
+<code>ouroboros-network</code>.</p><p>Other changes for <code>1.0.0.0</code> release on Hackage:</p><ul><li>Refactored test suite (<a href="https://github.com/input-output-hk/io-sim/pull/47" target="_blank" rel="noopener noreferrer">pr #47</a>)</li><li>Updated documentation, cabal files, <code>CONTRIBUTING</code>, <code>SECURITY</code> documents, etc in <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">pr #60</a>, currently under review.</li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Open-Source Update]]></title>
+        <id>2023-01-13-open-source</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-13-open-source"/>
+        <updated>2023-01-13T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Open Source Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-quarterly-update">Open Source Quarterly Update<a class="hash-link" href="#open-source-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>In the last quarter the open-source initiative delivered a comprehensive report
+on the state of our repositories.  As part of this work stream we
+identified the key open-source repositories for the cardano project across all
+the projects  From a list of more than 500 repositories (some of which are
+forks) we identified key repositories which constitute the core of Cardano.
+20 of them were identified as to be transferred to the future MBO which will
+govern Cardano development.  Some where excluded (like <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> and
+<a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a>), to be govern by IOG, since they have a much broader
+application than Cardano itself, and thus we think their open-source future
+will be better outside of the Cardano umbrella.</p><p>Christian Taylor identified a number of ways we can improve our repositories to
+make them more attractive for open-source contributions by analysing each of
+them.  This includes adding or improving various documentation files, like
+<code>CONTRIBUTING</code> files, adding code of conduct, improving readme files, issue
+&amp; pull request templates etc.  Christian also computed various interesting
+metrics which gives a very good insight into the development practices: e.g.
+average merge ratio, average number of reviews, comments and many more!  The
+presentation is available <a href="https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ" target="_blank" rel="noopener noreferrer">here</a>.</p><p>We followed with work on the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  We included
+a standard code of conduct which is now used by most important projects in the
+Cardano space.  We included <code>cardano-node</code>'s security policy and added
+a responsible disclosure policy.  We also described how roles and
+responsibilities should be clarified.  This progress was made by
+a collaborative effort of the Cardano Core, Plutus and Architecture teams, and
+it wouldn't be possible without Michael Peyton Jones, Arnaud Bailly, Kevin
+Hammond, Jared Corduan and Marcin Szamotulski.</p><p>We also improved the documentation of key repositories, by adding description,
+improving their <code>README</code> file &amp; <code>CONTRIBUTING</code> files, adding code of conducts
+following the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  This includes improvements to:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network" target="_blank" rel="noopener noreferrer"><code>ouroboros-network</code></a> (both <code>network</code> &amp; <code>consensus</code>)</li><li><a href="https://github.com/input-output-hk/cardano-ledger" target="_blank" rel="noopener noreferrer"><code>cardano-ledger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-node" target="_blank" rel="noopener noreferrer"><code>cardano-node</code></a></li></ul><p>And also</p><ul><li><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a></li><li><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a></li><li><a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer"><code>cardano-prelude</code></a> (work in progress)</li></ul><p>The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. </p><p>In this quarter we also identified a number of projects which can be published to
+<code>Hackage</code> (Haskell's package repository) or <code>crate</code> (Rust package repository).
+The list contains 21 packages, 2 of which (<a href="https://hackage.haskell.org/package/hedgehog-extras" target="_blank" rel="noopener noreferrer"><code>hedgehog-extras</code></a> and
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>) are already published on Hackage and another 5 (from
+the <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> repository) are close to be published.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><p>The progress of the open-source project is tracked in <a href="https://github.com/orgs/input-output-hk/projects/60/views/1" target="_blank" rel="noopener noreferrer">this project</a>.</p>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="open-source" term="open-source"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Consensus Quarterly Update]]></title>
+        <id>2022-11-15-consensus</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-15-consensus"/>
+        <updated>2022-11-15T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Consensus Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li><p>As a consequence of the errors observed when running distributed mempool
+benchmarks, we re-designed the UTxO HD mempool integration, which fixed these
+errors and lead to a simpler and more maintainable design.</p></li><li><p>We focused on increasing test coverage for the UTxO-HD prototype. In
+particular, we added property tests for:</p><ul><li>Backing store (work ongoing)</li><li>Era transitions</li></ul></li><li><p>The property tests we added uncovered several bugs, which is a great result
+given the exponential increase in the cost of finding bugs as they are closer
+to deployment.</p></li><li><p>One of the errors found by our tests required us to work on improvements in
+the Haskell bindings for LMDB. This work is ongoing.</p></li><li><p>We started working on the mempool property tests that will exercise the new
+code paths that UTxO HD introduced.</p></li><li><p>We developed, benchmarked and tested an implementation of sequences of
+differences based on "anti-diffs". Performance results of diff sequence
+operations show that we achieved a speedup of about <code>4x</code> across several
+scenarios. Note: this speedup is taking into account diff sequence operations
+only, so the consensus-wide speedup is less than <code>4x</code>.</p></li><li><p>We integrated the "anti-diff" prototype into the UTxO HD feature branch.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We wrote a simulator that demonstrates soundness of an abstract implementation
+of the new chain selection rule.</li><li>We elaborated a draft specification for the Genesis implementation (currently
+awaiting feedback from other architects).</li><li>We elaborated a draft specification for the ChainSync Jumping optimization. In
+particular, this includes a proof sketch that the latter preserves liveness
+and safety in all cases.</li><li>With the Networking team, we co-designed the eclipse avoidance mechanism,
+specifically its coherence with the Genesis implementation plan's security
+and its dependence on the new ChainSync Jumping optimization.</li><li>We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a
+performance degradation wrt the baseline. Our optimization attempts so far
+have brought the performance closer to the baseline, but not yet to parity.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We did most of the heavy lifting required to integrate the Conway era into the
+Consensus layer.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We started working on enabling CI nightly tests, which revealed several test
+failures due to thunks being found it data structures used by the ledger and
+consensus. We made a lot of progress fixing those thunk errors, but some
+errors still remain.</p></li><li><p>We elaborated a <code>db-analyser</code> benchmark for the ledger operations. This led us
+to the identification of high processing time at epoch boundaries, and we
+could not observe any performance degradation that can be attributed to era
+changes.</p></li><li><p>We fixed a source of flakiness in the ChainDB QSM test.</p></li><li><p>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</p></li><li><p>We fixed a bug in the maximum-allowed ledger major protocol version.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We spent time making <code>cardano-updates</code> the central source of information for
+the core teams stakeholders.</li><li>We went through the Galois gap analysis and extracted actionable points to
+take on next.</li><li>Bart and Yogesh continued with their onboarding and stated making substantial
+contributions to consensus.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Finish the mempool property tests.</li><li>Benchmark the latest version of the prototype.</li><li>Elaborate a document that describes new integration test scenarios and pass it
+to the SDET team.</li><li>Bring query UTxO by address command performance on par with the baseline
+version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Receive and incorporate Duncan's feedback on the first draft specification for
+the Genesis implementation.</li><li>Begin prototyping the first genesis implementation, unless the first draft
+needs major changes.</li><li>Draft a second revision of the Genesis report.</li><li>Review the second revision with a wider audience, which includes at least
+Alexander Russell. That feedback will drive a third and hopefully final
+revision.</li><li>Investigate how to mitigate the ~30% slowdown we have observed so far in the
+ChainSync jumping prototype, and try to mitigate it. In particular, we might
+need to optimize the existing BlockFetch logic.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Enabling nightly CI tests.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Merge the tutorial document Galois wrote; requires CI integration.</li><li>Come up with our own documentation improvements, many of which were suggested
+in the Galois gap analysis.</li><li>Try to hire a new team member.</li></ul>]]></content>
+        <author>
+            <name>Damian Nadales</name>
+            <uri>https://github.com/dnadales</uri>
+        </author>
+        <category label="consensus" term="consensus"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Network Team Update]]></title>
+        <id>2022-11-09-network</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-09-network"/>
+        <updated>2022-11-09T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Network Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-most-important-improvements">Summary of most important improvements<a class="hash-link" href="#summary-of-most-important-improvements" title="Direct link to heading">​</a></h3><p>During this quarter the networking team delivered low level specification of
+peer sharing &amp; eclipse evasion.  We held a session with the consensus &amp; the
+scientists; we got a positive feedback on the design.</p><p>Further we focused on implementation of peer sharing.  We produced a <a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">detail
+design</a> and an <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">early implementation</a>.</p><p>We prepared the <em>P2P Single Relay Release</em> (<code>cardano-node-1.35.5</code>).  It
+includes over <a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">130 patches</a> of network stack improvements over the
+previous version <code>1.35.4</code>, which were accomplished over a longer period of
+time.  Among them are both bug fixes and UX improvements for stake pool
+operators like simplified format of the <a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">topology file</a>, or
+improvements in the logged messages:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">tracing of early consensus exceptions</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">tracing of demotion of local root peers</a> (traced with
+<code>Warning</code> severity), the trace is called <code>TraceDemoteLocalAsynchronous</code>, in
+<code>json</code> format it is encoded as <code>DemoteLocalAsynchronous</code>.  For an SPO
+tracking these demotion is vital (such demotion could indicate that a block
+producer is no longer connected to its relays or vice versa)</li></ul><p>We also provide better integration with <a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">systemd</a> (socket
+activation improvements) or improvements in the networking stack:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3785" target="_blank" rel="noopener noreferrer">exit policies</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3915" target="_blank" rel="noopener noreferrer">peer metrics improvements</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">DNS TTL</a> improvements (which make it harder to misconfigure the
+system, an issue discovered by the performance &amp; monitoring team),</li><li>do not trigger inbound idle timeout for <code>node-to-client</code> connections (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3844" target="_blank" rel="noopener noreferrer">pr
+#3844</a>), an issue reported to us by Matthias Benkort from
+Cardano Foundation.</li></ul><p>Duncan has been making progress with the input endorsers demo. His simulation
+provides a useful animated visualisation and live quantification of behaviour
+of the modeled design.</p><p>We also improved our e2e diffusion simulation by implementing header-body
+split, similar to what the real implementation does.</p><p>We also made some advances towards our future goals of P2P release for block
+producer nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a> - in review) &amp; for Daedalus users
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3968" target="_blank" rel="noopener noreferrer">pr #3690</a> - merged).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><ul><li><p>We expanded diffusion simulation with block-fetch protocol bringing it closer
+to the production system.</p></li><li><p>We addressed some additional technical depth in diffusion simulation</p></li><li><p>We slightly improved documentation &amp; CI of io-sim and typed-protocols
+repositories for open-source contributors.</p></li><li><p>We closed a number of issues towards publishing io-sim on Hackage (only two
+essential issues are left open).</p></li><li><p>We pushed a branch of typed-protocols which captures one of the developer UX
+problems in the API which we need to solve.</p></li><li><p>We identified and fixed an issue related to systemd sockets.</p></li><li><p>We identified and fixed an issue in consensus initialisation not giving
+feedback on early errors.</p></li><li><p>We deployed RT View, identified a number of issues which were communicated to
+the performance &amp; monitoring team.</p></li><li><p>We finished high level &amp; detailed design of peer sharing, very early
+implementation of peer sharing is done (note that peer sharing cannot be
+safely deployed without eclipse evasion &amp; genesis).</p></li><li><p>We finished high level design of eclipse evasion, and started working on
+a detailed design.</p></li><li><p>We were assigned the role of release engineer for 1.35.5 release (the P2P
+single relay release); we prepared a cardano-node for 1.35.5 release which
+contains more than 130 patches of just network stack improvements done over
+last few months.</p></li><li><p>We diagnosed and fixed an tricky bug in the peer state actions (a component
+which sits between outbound governor and connection manager). That bug was
+introduced earlier this year and never released. It was caught by the QA
+testing framework. We expanded our diffusion simulation to cover such case and
+also mitigated a chance for reintroducing such a bug in future.</p></li><li><p>We identified and quite likely mitigated a misconfiguration in the
+benchmarking cluster (next benchmarking run will confirm our hypothesis).</p></li><li><p>We simplified the format of p2p topology file, we got positive feedback from
+SPOs.</p></li><li><p>We raised severities of some of the logging messages, which is an important
+improvement for SPOs, exchanges and other users of the system.</p></li><li><p>We worked on input endorsers simulation which gives both animated and
+quantified live feedback on network operation, using a simplified model of
+a TCP/IP network. </p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-quarter">Next quarter<a class="hash-link" href="#next-quarter" title="Direct link to heading">​</a></h2><ul><li><p>Release the Single Relay P2P Release <code>1.35.5</code>.</p></li><li><p>Carry on with Peer Sharing (review, testing).</p></li><li><p>Deliver a talk at <a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">Conference on Principles of Distributed Systems 2022</a> in Brussels, Belgium.</p></li><li><p>Present Detailed Design of Eclipse Evasion and start implementation phase.</p></li><li><p>Work on P2P Block Producer release.</p></li><li><p>Carry on with publishing of <code>io-sim</code> on <code>Hackage</code>.</p></li></ul>]]></content>
+        <author>
+            <name>Marcin Szamotulski</name>
+            <uri>https://github.com/coot</uri>
+        </author>
+        <category label="network" term="network"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Ledger Team Update]]></title>
+        <id>2022-11-07-ledger</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-07-ledger"/>
+        <updated>2022-11-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Ledger Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>We finished a minimal ledger era capable of master key rotation.
+This will be re-purposed our upcoming work.</li><li>We have the humble beginnings of a proper ledger API.</li><li>We improved the problematic cost model serialization
+(recall the song and dance about updating the cost model one epoch after the hard fork).</li><li>We have added benchmarks for problematic areas.</li><li>Massive repository restructure and cleanup.<ul><li>Unified and consistent variable name schemes (not completely finished, but nearly there).</li><li>Massive reduction in type constraints, which causes a lot of developer friction,
+in our code and also downstream.</li><li>More organized module structures.</li><li>Improved generators for our property tests.</li><li>We removed our dependency on cardano-prelude.</li></ul></li><li>The formal ledger model has come a long way.<ul><li>We created a fork of Agda that provides some meta-programming support for the ledger rules.</li><li>We have a large amount of the basic UTxO support in the model.</li><li>We can generate a good looking PDF from the model.</li><li>We can produce Haskell from the model.</li><li>We have a nice finite set theory library that we can use for many of the ledger rules.</li><li>We have nix support for the model.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h2><ul><li>Individual tracking of deposits. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>]</li><li>Versioned CBOR encoders/decoders. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>]</li><li>New ledger era transaction body (and the surround work associated with it).</li><li>Designs for the next ledger era.</li></ul>]]></content>
+        <author>
+            <name>Jared Corduan</name>
+            <uri>https://github.com/JaredCorduan</uri>
+        </author>
+        <category label="ledger" term="ledger"/>
+    </entry>
+    <entry>
+        <title type="html"><![CDATA[Node API & CLI Team Update]]></title>
+        <id>2022-10-07-node-cli-api</id>
+        <link href="https://input-output-hk.github.io/cardano-updates/quarterly/2022-10-07-node-cli-api"/>
+        <updated>2022-11-07T00:00:00.000Z</updated>
+        <summary type="html"><![CDATA[Node-Api-Cli Quarterly Update]]></summary>
+        <content type="html"><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-quarterly-update">Node-Api-Cli Quarterly Update<a class="hash-link" href="#node-api-cli-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0</li><li>Major clean up of stale iusses + PRs.</li><li>Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs</li><li>cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.</li><li>cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.</li><li>General documentation updates and improvements</li><li>Addition of tx-mempool command which allows users to:<ul><li>Query the node about the current mempool's capacity and sizes</li><li>Request the next transaction from the mempool's current list</li><li>Query if a particular transaction exists in the mempool</li></ul></li><li>Initial refactoring of cardano-testnet</li></ul><p>Next quarter</p><ul><li>cardano-api<ul><li>Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.</li></ul></li><li>cardano-testnet<ul><li>Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - <a href="https://github.com/input-output-hk/cardano-node/issues/4598" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/issues/4598</a></li></ul></li><li>Serenity<ul><li>Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.</li></ul></li><li>General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new.</li></ul>]]></content>
+        <author>
+            <name>Jordan Millar</name>
+            <uri>https://github.com/Jimbo4350</uri>
+        </author>
+        <category label="cli-api-quarterly" term="cli-api-quarterly"/>
+    </entry>
+</feed>
\ No newline at end of file
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-consensus">Consensus Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04----2023-06">2023-04 -- 2023-06<a class="hash-link" href="#2023-04----2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished a major prototype refactoring, which includes:<ul><li>A better and finer grained DB lock mechanism.</li><li>Elimination of race conditions.</li><li>Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.</li><li>Architectural simplifications and performance improvements.</li></ul></li><li>We implemented a new package to support db-sync integration with UTxO-HD.</li><li>We ran another set of ad-hoc benchmarks:<ul><li>We uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>.</li><li>The synchronization and replay speed are as expected.</li><li>However, we uncovered memory consumption issues (see figure below).<ul><li>The in-memory backend is consuming more memory than the baseline.</li><li>The LMDB backend shows an unexpected memory usage peak.</li><li>Investigation on these issues is ongoing.</li></ul></li></ul></li><li>We integrated the latest changes in <code>main</code> branch.<ul><li>This required a re-design of the mempool to include the mempool fairness
+improvement.</li></ul></li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks-74f9d76c2602f09652f584cc4d6a0962.png" width="2500" height="1700" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>The Genesis work for this PI focused on an high-priority issue from the IOG Researchers&#x27; feedback on the proposal.<ul><li>This particular question was not anticipated when the Q2 PI was planned.</li><li>As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.</li><li>That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.</li></ul></li><li>The IOG Researchers&#x27; feedback on the design was very valuable. It had two primary effects.</li><li>Outcome 1: We re-introduced distinct behaviors when the node is &quot;syncing&quot; versus when it is &quot;caught up&quot;.<ul><li>This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.</li><li>The additional design complexity is relatively small.</li></ul></li><li>Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.<ul><li>The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.</li><li>All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.</li><li>Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.</li><li>The primary invention was a model for bounding how much benefit the adversary&#x27;s long-range attack could possibly gain from Praos&#x27;s natural short forks.</li></ul></li><li>Relevant questions that the IOG Researchers are still assessing.<ul><li>These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.</li><li>Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?</li><li>Question 2: what is the upper bound on how much grinding can improve the adversary&#x27;s leader schedule within some Genesis window?</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We performed an analysis on number of file descriptors used by Consensus, this
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough, thus improving the user (eg node
+operator) experience.</li><li>We implemented a mempool fairness improvement, by which transactions are
+guaranteed to be processed irrespective of their size.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in followers logic, which was discovered by our <code>QuickCheck</code>
+property tests.</li><li>We created an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB
+server</a>. This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> tool, which can be used in disaster recovery and benchmarking scenarios.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/161" target="_blank" rel="noopener noreferrer">benchmarks comparison tool</a> that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance <em>improvements</em> introduced by the Ledger team in version <code>0.6.0.0</code> of Consensus wrt version <code>0.5.0.0</code>.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-beacon-graph-ded65e814bfe6d927faa1c5c66bbbfad.png" width="1840" height="1372" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released <code>fs-sim</code> as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.</li><li>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new repository</a>, splitting
+it from the <code>ouroboros-network</code> repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).</li><li>We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).</li><li>We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>We will <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">get UTxO-HD ready for handover</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-network">Network Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised the design of eclipse evasion and implemented its mechanism which
+relays on connectivity to <em>big ledger peers</em>.  <em>Big ledger peers</em> are the
+largest ledger peers which accumulate 90% of stake (currently there are less
+than 1000 of them).  The outbound governor has new targets for <em>known</em>,
+<em>established</em> and <em>active</em> big ledger peers which work in a similar way that
+such targets work for ledger peers.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4662" target="_blank" rel="noopener noreferrer">ouroboros-network#4662</a> PR is
+currently in review.</p><p>As part of this work we also identified a bug which would prevent a node to
+connect to itself.  Such connections are not easily detectable and are expected
+to be dropped by the churn mechanism, nonetheless they should not be buggy.
+The failure was discovered thanks to our e2e simulation of diffusion using
+<code>io-sim</code> &amp; property based testing.</p><p>The PR also refactors the heart of the <code>ouroboros-network</code> interface reducing
+technical debt that would otherwise accumulate.</p><p>We also identified a possible improvement in the churn mechanism, which will be
+implemented in Q3.  Churn needs to await for peers to terminate, we can
+improve the synchronisation. <!-- -->[ouroboros-network#4617]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ecosystem-p2p-deployment-progress">Ecosystem P2P Deployment Progress<a class="hash-link" href="#ecosystem-p2p-deployment-progress" title="Direct link to heading">​</a></h4><p>We reached <strong>50% of stake in hands of SPOs who run at least on P2P relay</strong>.  Now
+also Emurgo and CF are running some P2P relays. Also 20% of IOG relays are
+running in P2P mode.</p><p><img loading="lazy" alt="P2P Progress" src="/cardano-updates/assets/images/2023-07-06-p2p-progress-194a909569eebb016b1f24fb8941e2cc.png" width="1024" height="768" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented <em>bootstrapping for peer sharing</em> (also known as light peer
+sharing).  New downstream (inbound) peers are now added to the <em>known peers</em> of
+the <em>outbound governor</em>.  Together with peer sharing this allows for non
+registered relays to propagate through the network. <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">ouroboros-network#3596</a></p><p><em>Please note that peer sharing is disabled by default and is not considered safe
+until Bootstrap Peers (see below) or Genesis is implemented.</em></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="diffusion-p2p">Diffusion (P2P)<a class="hash-link" href="#diffusion-p2p" title="Direct link to heading">​</a></h4><ul><li><p>We designed a feature which will reduce the load on IOG relays (in future
+also run by CF &amp; Emurgo).  The feature consists of two parts.  A new source
+of peers called <em>bootstrap peers</em> (obtained from via an https request), the
+ability to switch from bootstrap peers to ledger peers if the node is synced
+(we are collaborating with the consensus team on the interface <a href="https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md" target="_blank" rel="noopener noreferrer">Bootstrap
+Peers IER</a>).   This feature will be completed in Q3.
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">ouroboros-network#4530</a></p></li><li><p>We published a blog post about <a href="https://engineering.iog.io/2023-06-28-p2p" target="_blank" rel="noopener noreferrer">P2P design &amp; implementation</a>.</p></li><li><p>Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">ouroboros-network#4559</a>.</p></li><li><p>We merged changes which allow the consensus layer to start / stop block
+forging thread.  This will allow to deploy P2P block producing nodes which
+serve as a live backup node. <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a></p></li><li><p>We fixed a few bugs in local root peers DNS resolution service:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4583" target="_blank" rel="noopener noreferrer">ouroboros-network#4583</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4571" target="_blank" rel="noopener noreferrer">ouroboros-network#4571</a>.</p></li><li><p>We limited concurrency of DNS name resolutions: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">ouroboros-network#4596</a>.</p></li><li><p>Galois Inc implemented query option for Handshake: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</p></li><li><p>We fixed handshake query timeout: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">ouroboros-network#4608</a>.</p></li><li><p>We implemented warm valency for local root peers.  This can help when using
+DNS names in local root peers which resolve to many IP addresses. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a></p></li><li><p>We merged handshake changes which allow query protocol versions.  Thanks to
+James Parker from Galois Inc.: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a>.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-improvements--developments">Other Improvements &amp; Developments<a class="hash-link" href="#other-improvements--developments" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cddl">CDDL<a class="hash-link" href="#cddl" title="Direct link to heading">​</a></h4><ul><li><p>We added <code>node-to-node</code> and <code>node-to-client</code> CDDL specs / tests for encoding
+of <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>.  </p></li><li><p>We clarified an inconsistency between CDDL spec and implementation which is
+highly polymorphic.  We designed and implemented a fix for <code>tx-submission</code>
+and <code>local-tx-submission</code> mini-protocols.  Specs for other mini-protocols will
+be improved at a later stage. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">ouroboros-network#4580</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ping"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping" target="_blank" rel="noopener noreferrer">Cardano Ping</a><a class="hash-link" href="#cardano-ping" title="Direct link to heading">​</a></h4><ul><li><p><code>cardano-ping</code> command was deprecated in favour of <code>cardano-cli ping</code> (the
+transition was done by the <code>node</code> team).</p></li><li><p>Support for <code>node-to-client</code> protocol using Unix sockets.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">ouroboros-network#4601</a></p></li><li><p>Support for <code>NodeToNodeV_11</code> and <code>NodeToClientV_16</code>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4587" target="_blank" rel="noopener noreferrer">ouroboros-network#4587</a></p></li><li><p><code>cardano-cli ping</code> is now using <em>ISO8601</em> format for timestamps.  Formatting of
+messages was improved. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">ouroboros-network#4593</a></p></li><li><p><code>cardano-cli ping</code> has a new <code>--query-versions</code> flag which allows to query
+supported versions by the remote node.  This is supported by
+<code>cardano-node-8.1.0</code>. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">ouroboros-network#4589</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">cardano-node#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim"><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">IOSim</a><a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><ul><li><p>We fixed timeouts &amp; delays in <code>io-classes</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</p></li><li><p>We released <code>strict-stm-1.1.0.1</code> on Hackage which fixed a bug in package
+description file: <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">io-sim#101</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols"><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer">Typed Protocols</a><a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h4><ul><li>We published haddocks of <code>typed-protocols</code> at
+<a href="https://input-output-hk.github.io/typed-protocols" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/typed-protocols</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-client"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client" target="_blank" rel="noopener noreferrer">Cardano Client</a><a class="hash-link" href="#cardano-client" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in <code>cardano-client-0.1.0.2</code> release which results in clients
+(e.g. <code>db-sync</code>) negotiate an experimental protocol version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>After the split between consensus &amp; network, we made <code>cardano-client</code>
+independent of <code>ouroboros-consensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</p></li><li><p>We wrap all exceptions in <code>DiffusionError</code>: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">ouroboros-network#4537</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ci-improvements">CI improvements<a class="hash-link" href="#ci-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We switched to use GitHub merge queues in <code>ouroboros-network</code>, <code>io-sim</code> and
+<code>typed-protocols</code> repositories; <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4546" target="_blank" rel="noopener noreferrer">ouroboros-network#4546</a>.</p></li><li><p>We cleaned &amp; updated scripts which run on CI.</p></li><li><p>We implemented a script to verify &amp; release packages on CHaP; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">ouroboros-network#4542</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">ouroboros-network#4573</a>.</p></li><li><p>We implemented a new CI script and cleaned existing ones:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">ouroboros-network#4572</a>.</p></li><li><p>We don&#x27;t install cryptographic libraries on CI anymore as none of our
+packages requires them; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">ouroboros-network#4539</a>.</p></li><li><p>Improved caching of dependencies: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">ouroboros-network#4553</a>.</p></li><li><p>We made it possible to trigger building haddock manually:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">ouroboros-network#4549</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-94--96">GHC 9.4 &amp; 9.6<a class="hash-link" href="#ghc-94--96" title="Direct link to heading">​</a></h4><p>We made all repositories under our control compile with <code>ghc-9.4</code> and <code>ghc-9.6</code>
+which includes <code>ouroboros-network</code>, <code>io-sim</code>, <code>typed-protocols</code> and
+<code>Win32-network</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will continue towards our <a href="https://github.com/orgs/input-output-hk/projects/39/views/30" target="_blank" rel="noopener noreferrer">aspirational roadmap</a>.</p><ul><li>We will continue reviewing eclipse evasion.</li><li>As <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a> was merged, we are making progress towards
+releasing P2P on block production nodes.  We hope to analyse performance
+regression on such nodes observed on the benchmarking cluster. <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=6875505" target="_blank" rel="noopener noreferrer">roadmap-3887</a></li><li>We are also focused on <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=8920085" target="_blank" rel="noopener noreferrer">roadmap-3969</a>. Note that it was expanded in Q2.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-sre">SRE Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Expanding the darwin CI cluster and adding aarch64 builder support</li><li>Adding bare metal capability to bitte clusters</li><li>Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality</li><li>Creation of pool performance analysis queries and scripting</li><li>Migration of testnet metadata server to cardano-world</li><li>Cardano shelley qa migration to cardano-world</li><li>Cardano sanchonet environment spin up to test Conway era functionality</li><li>Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with the conversion of mainnet to using p2p topology</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing">Performance &amp; Tracing Q3 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><ul><li>Release benchmarking</li><li>Developing and running UTxO-HD benchmarks - in-memory flavour</li><li>P2P benchmarks, facilitating rollout</li><li>Production-readiness of the new Nomad cluster has been reached</li><li>Optimization of and introspection capability for the new tracing system</li><li>GHC9 performance investigation (and possible remedy)</li><li>Conensus QTAs: first real-world application of prototype</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="release-benchmarking">Release benchmarking<a class="hash-link" href="#release-benchmarking" title="Direct link to heading">​</a></h4><p>Ongoing release benchmarking is a crucial safeguard to <code>cardano-node</code>&#x27;s release cycle from a performance perspective. We&#x27;ve performed and analyzed benchmarks for node versions <code>8.2.x</code> to <code>8.5</code> throughout Q3.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-benchmarks">UTxO-HD benchmarks<a class="hash-link" href="#utxo-hd-benchmarks" title="Direct link to heading">​</a></h4><p>Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-benchmarks">P2P benchmarks<a class="hash-link" href="#p2p-benchmarks" title="Direct link to heading">​</a></h4><p>In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-nomad-cluster">New nomad cluster<a class="hash-link" href="#new-nomad-cluster" title="Direct link to heading">​</a></h4><p>The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received
+various rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest
+of our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it
+ready for production use.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system">New tracing system<a class="hash-link" href="#new-tracing-system" title="Direct link to heading">​</a></h4><p>Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that
+it is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  </p><p>Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating
+end user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc9-performance">GHC9 performance<a class="hash-link" href="#ghc9-performance" title="Direct link to heading">​</a></h4><p>In Q3, a joint investigation with DevX into GHC9&#x27;s behaviour revealed where and how GHC9 misses opportunities for
+optimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable
+those optimizations - which is still being validated.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h4><p>In collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations&#x27;
+performance characteristics. It&#x27;s now applicable, and being applied, to a real-world task - namely
+gathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking:<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h4><p>In Q4, the focus will be on:</p><ul><li>facilitating the next mainnet release</li><li>benchmarking runs in the Conway era</li><li>developing benchmarks / workloads for Conway-exclusive actions</li><li>implementing a specialized benchmark setup for the UTxO-HD on-disk variant</li><li>developing new Plutus benchmarks to safeguard Plutus V3</li><li>benchmarks regarding the rollout of P2P</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h4><p>For certain blocking performance issues we&#x27;ve located the cause, or even found a solution in a cross-team effort. In Q4 we&#x27;ll advance that work to ensure the ongoing
+release cycle for mainnet, as well as make GHC9 become a viable release platform.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system-1">New tracing system<a class="hash-link" href="#new-tracing-system-1" title="Direct link to heading">​</a></h4><p>For the new tracing system, we&#x27;ll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-monitoring">UTxO-HD monitoring<a class="hash-link" href="#utxo-hd-monitoring" title="Direct link to heading">​</a></h4><p>We&#x27;ll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h4><p>From Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h4><p>We will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with <code>cardano-node</code>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-component-qtas-co-development">Consensus component QTAs (co-development)<a class="hash-link" href="#consensus-component-qtas-co-development" title="Direct link to heading">​</a></h4><p>In Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Completion of mainnet relay networking conversion to p2p topology</li><li>Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality</li><li>Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines</li><li>Creation of a nix content addressed packages repository, <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a>:<ul><li>To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells</li></ul></li><li>Creation of a cardano performance benchmarking cluster, <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf</a>:<ul><li>To replace legacy cluster benchmark tooling</li></ul></li><li>Creation of a cardano cluster composition repository, <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a>:<ul><li>For enabling multi-cluster, multi-role cardano network deployments</li></ul></li><li>Creation of a cardano testnets repository, <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a>:<ul><li>Utilizing cardano-parts for testnet deployments</li></ul></li><li>Creation of a sanchonet demo repository, <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a>:<ul><li>Utilizing cardano-parts for fast sanchonet test environment and demo purposes</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with migration of cardano-world testnets to cardano-playground</li><li>Proceed with spinup of mainnet p2p bootstrap cluster</li><li>Scale down mainnet non-p2p legacy cluster at the appropriate time</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-25-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-25T00:00:00.000Z" itemprop="datePublished">April 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished the testing activities for the prototype, which involved adding
+new tests, and fixing and enabling temporarily disabled tests.</li><li>We spent a substantial amount of effort refactoring and cleaning the
+prototype.</li><li>We audited the UTxO HD prototype to make sure it can accommodate the migration
+of other tables (eg stake-keys registration) from memory to disk. The result
+of the audit was positive.</li><li>We ran ad-hoc benchmarks for reading keys and flushing values to disk. No
+unexpected costs found.</li><li>We ran the first system level benchmarks. The performance regressions reported
+were due to an unrealistic snapshotting rate. We need to re-run them again
+after we design a more fine grained locking mechanism.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We elaborated a roadmap of the remaining work for Genesis.</li><li>We presented the design to the IOG Researchers and PNSol on February 20. The
+design was well received. We updated the Genesis design with the researcher&#x27;s
+feedback.<ul><li>We plugged the new DoS vector identified during the aforementioned
+presentation.</li></ul></li><li>We developed a generator for adversarial leader schedules that satisfy key
+Ouroboros properties, which will be used to test the Genesis design.<ul><li>The generator enables use of smaller Ouroboros parameters, which makes
+extrema more likely and counterxamples easier interpret.</li></ul></li><li>We wrote up the latest design iteration.</li><li>We continued benchmarking the Chain Sync Jumping prototype. In particular:<ul><li>We debugged the prototype&#x27;s performance regression, and unmasked the
+actual cause by patching our initial theory (bad queuing behavior)</li><li>We identified and validated the actual cause (a pathological case in
+BlockFetch tiebreaker).</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother
+to serve a local immutable DB.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We integrated the Conway era into consensus.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug with followers, which was discovered by property tests.</li><li>We developed a DSL for specifying and running ChainDB test cases.</li><li>We fixed failing tests with iterators.</li><li>We created micro-benchmarks for adding transactions to the mempool.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released a new technical documentation site for consensus.</li><li>We factored out several packages to external repositories. Some of this work
+originated in the UTxO HD workstream.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/28</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/33" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/33</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/32" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/32</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/31" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/31</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Design Consensus side of hardfork-enactment in the Voltaire phase
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4180" target="_blank" rel="noopener noreferrer">#4180</a>).</li><li>Estimate the number of file descriptors Consensus needs
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/20" target="_blank" rel="noopener noreferrer">#20</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define
+for consensus. Pick one and implement benchmarks for it.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Onboard a new team member.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-04-network">Network Q1 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-04T00:00:00.000Z" itemprop="datePublished">April 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gradual-dynamic-p2p-release-on-mainnet">Gradual dynamic P2P release on mainnet<a class="hash-link" href="#gradual-dynamic-p2p-release-on-mainnet" title="Direct link to heading">​</a></h4><p>We released two version of <code>cardano-node</code> with dynamic P2P capabilities:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6" target="_blank" rel="noopener noreferrer"><code>1.35.6</code></a><ul><li>we found and fixed a bug in exception handling in <code>peer-state-actions</code><a href="https://github.com/input-output-hk/ouroboros-network/pull/4357" target="_blank" rel="noopener noreferrer">pull-4357</a></li><li>we found and fixed a busy loop when demoting a peer from hot to warm <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">pull-4385</a> </li></ul></li><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7" target="_blank" rel="noopener noreferrer"><code>1.35.7</code></a><ul><li>includes interoperability in the legacy non-p2p network stack <a href="https://github.com/input-output-hk/outoboros-network/pull/4467" target="_blank" rel="noopener noreferrer">pull-4467</a></li></ul></li><li>we fixed a busy loop of demotion &amp; promotions: <code>warm -&gt; hot -&gt; warm</code>[pull-4485]<!-- --> /it will be included in <code>cardano-node-8.0.0</code> release/.</li></ul><p>Currently there are more than 200 P2P relays on mainnet.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented /peer sharing/ <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull-4019</a> which will be available as an
+experimental feature in one of the future <code>cardano-node</code> releases.</p><p>We implemented /light peer sharing/, e.g. adding inbound connections to the set
+of known peers of the outbound governor, which allows to bootstrap relays not
+registered on chain.  This complements peer sharing.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4277" target="_blank" rel="noopener noreferrer">pull-4277</a> is in
+late review stages.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised design of eclipse evasion and we started implementing it.  We
+have an initial implementation (not merged). We are in the process of extending
+our test suite to cover new implementation details: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>, <a href="https://github.com/input-output-hk/outoboros-network/pull/4462" target="_blank" rel="noopener noreferrer">pull-4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h4><p>Galois has been making progress on <em>Cardano Network Service Assurance</em> project.</p><ul><li><p>In cardano-node, they have developed a <code>datapoint</code> abstraction that creates
+a queue of (existing) log events, they now have two such <code>datapoint</code>s (of log
+events) implemented.</p></li><li><p>They have developed a <code>datapoint</code> client executable that can connect to a node
+which serves the &quot;new tracing&quot;.</p></li><li><p>They have been exploring approaches for the consolidation and analysis of
+<code>datapoint</code> data to extract actionable network health status.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li>We made it possible to configure accepted connections limit <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">pull-4902</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We fixed a bug in network simulation implementation of TCP simultaneous open <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">pull-4265</a>.</p></li><li><p>We introduced header-body split in the diffusion simulation <a href="https://github.com/input-output-hk/outoboros-network/pull/4419" target="_blank" rel="noopener noreferrer">pull-4419</a> (in review).</p></li><li><p>We introduced initiator only nodes in the diffusion simulation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4280" target="_blank" rel="noopener noreferrer">pull-4280</a>.</p></li><li><p>We fixed a connection-manager test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue-4370</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We refactored <code>Snocket</code> interface decoupling it from the multiplexer
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">pull-4260</a>. This simplified some aspects of the KES agent implementation.</p></li><li><p>We introduces a record for CBOR codecs which are used for various data
+structures by mini-protocol codecs <a href="https://github.com/input-output-hk/outoboros-network/pull/4430" target="_blank" rel="noopener noreferrer">pull-4430</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h4><ul><li>We explained some limitations of CDDL in our technical report <a href="https://github.com/input-output-hk/ouroboros-network/pull/4351" target="_blank" rel="noopener noreferrer">pull-4351</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h4><ul><li>We fixed implementation of <code>MVar</code>&#x27;s <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">pull-70</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nothunks">NoThunks<a class="hash-link" href="#nothunks" title="Direct link to heading">​</a></h4><ul><li>We published a new version of <a href="https://hackage.haskell.org/package/nothunks" target="_blank" rel="noopener noreferrer"><code>nothunks</code></a> library to Hackage.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Finish implementation &amp; testing of eclipse evasion <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>.</li><li>Optimise connectivity to peers behind firewall <a href="https://github.com/input-output-hk/ouroboros-network/issues/4381" target="_blank" rel="noopener noreferrer">issue-4381</a>.</li><li>Finish the work on enabling block production dynamically to allow using P2P
+on block producers <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">issue-3159</a>.</li><li>If time permits we would like also to reserve some time for finishing
+publication of <code>io-sim</code> to Hackage.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-03-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-03T00:00:00.000Z" itemprop="datePublished">April 3, 2023</time> · <!-- -->7 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cips">CIPs<a class="hash-link" href="#cips" title="Direct link to heading">​</a></h4><ul><li><strong>Entering the Voltaire phase</strong> -
+CIP-1694 received a major update after participation in the design has expanded to
+more and more people, including those who attended the Colorado workshop.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>.</li><li><strong>Ledger CIP category</strong> -
+The ledger team continues to embrace the CIP process, and has begun the process of
+registering the ledger as an official CIP category.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP-84</a>.</li><li><strong>Ledger serialization</strong> -
+A CIP for the ledger serialization deprecation cycle has been accepted.
+See <a href="https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080" target="_blank" rel="noopener noreferrer">CIP-80</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="formal-ledger-model">Formal ledger model<a class="hash-link" href="#formal-ledger-model" title="Direct link to heading">​</a></h4><p>Our new formal specifications backed by Agda have seen a lot of progress.
+The majority of the ideas in CIP-1694 are now present, and we have made enough progress
+that we can now safely say that the PDF produced by the Agda model will be the
+official ledger specification for the Conway ledger era.
+See <a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">the repository</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h4><p>Progress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.
+The major component still missing is the DRep stake distribution, which still presents some
+technical challenges.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="drep-stake-distribution-computation">DRep stake distribution computation<a class="hash-link" href="#drep-stake-distribution-computation" title="Direct link to heading">​</a></h4><p>Adding another large stake distribution to the ledger state must proceed with caution.
+We do not want the memory used by the node to increase too much,
+and performance problems can lead to reduced block production.
+We have prototyped, tested, and benchmarked several approaches that could give us
+the current DRep stake distribution at each epoch boundary.
+This has very important implications, since we want every ADA holder to be able to at any
+time (such as during a contentious vote) register themselves as a DRep and still have time
+to vote themselves on the issue.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h4><p>The ledger has made some wonderful improvements over the past six months,
+but which entail a significant amount of integration efforts:</p><ul><li>Our new versioned CBOR schemes</li><li>Individual deposit tracking</li><li>An improved cross-era interface utilizing lenses</li><li>A new ledger API</li><li>Re-arranging the ledger stake in preparation for CIP-1694</li><li>Versioning our Haskell packages
+using <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaPs</a>.</li><li>Consistent conventions for variable names</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a>]
+[<a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/378" target="_blank" rel="noopener noreferrer">pull-378</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/376" target="_blank" rel="noopener noreferrer">pull-376</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/373" target="_blank" rel="noopener noreferrer">pull-373</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/370" target="_blank" rel="noopener noreferrer">pull-370</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/361" target="_blank" rel="noopener noreferrer">pull-361</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/4976" target="_blank" rel="noopener noreferrer">pull-4976</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">pull-5013</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h4><p>Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.
+Deposits were returned according to the current protocol parameters.
+When the values of these two protocol parameters change, the deposit pot
+is adjusted by adding to, or removing from, the reserves.</p><p>This has several problems:</p><ul><li>Most people expect a deposit to be paid back exactly.</li><li>We cannot increase the deposit amount once the reserves hits zero.</li><li>If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.</li><li>Because of the problems above, it is going to be incredibly hard to ever change the values.</li><li>There is a serious issue involving hard forks.
+The consensus layer makes the decision about whether or not to enact a hard fork based on
+the protocol parameter update state two stability windows before the end of the epoch.
+However, the ledger will reject a protocol parameter update on the epoch boundary
+if the deposit pot adjustments cannot be reconciled with the reseve pot.
+This means that if quorum is met regarding changing the major protocol version,
+but the update is rejected on the epoch boundary, consensus will change the era but the
+ledger will not change the major protocol version, leaving the ledger in a split-brain state.</li></ul><p>Because we never actually changed the values of the two deposits amounts in the protocol parameters
+on mainnet, we were able to retroactively change the behavior.
+We made the following changes:</p><ul><li>Individual deposits are tracked in the <code>DState</code>.</li><li>The amount deposited is always returned.</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-ledger-api">New ledger API<a class="hash-link" href="#new-ledger-api" title="Direct link to heading">​</a></h4><p>We have significantly built up the ledger API.
+We will eventually replace much of the <code>cardano-api</code> in the node repository with this ledger API.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h4><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We have a new declaritive infrastructure for building constraint-based generators,
+which instead generate a random ledger state representative of not just an initial state,
+but also those representative of the end result of a long sequence of valid blocks.
+Moreover, these generators are very fast and are much more random than our old generators.
+Before we can start using them for our existing property tests, however, we still need to
+expand them to generate a valid block for a given ledger state.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><p>We continued to address technical debt as much as we can.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3323" target="_blank" rel="noopener noreferrer">pull-3323</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3338</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a>]</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="critical-fixes">Critical fixes<a class="hash-link" href="#critical-fixes" title="Direct link to heading">​</a></h5><p>We fixed two critical issues:</p><ul><li>Growing block production delay on the epoch boundary: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a>]</li><li>Unexpected node shutdown from <code>balanceR</code>: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li><strong>Conway spec</strong> -
+Complete the first version of the conway formal specification.</li><li><strong>DRep stake distribution</strong> -
+Have the ledger compute the DRep stake distribution with acceptible performance.</li><li><strong>Devnet ready</strong> -
+Have the Haskell implementation of the conway era in sync with the formal specification,
+and integrate the changes with consensus and node.
+All the details might not be finalized, but the wire specification and the API should
+be stable so that conway can be placed on a devnet for tool builders to start integrating with.</li><li><strong>Plutus V3</strong> -
+Integrate Plutus V3 into the ledger, including a new script context which supports DReps.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h3><p>This quarterly report was based off of the following fortnightly ones:</p><ul><li><a href="/cardano-updates/2023-01-05-ledger">2023-01-05</a></li><li><a href="/cardano-updates/2023-01-19-ledger">2023-01-19</a></li><li><a href="/cardano-updates/2023-02-02-ledger">2023-02-02</a></li><li><a href="/cardano-updates/2023-02-17-ledger">2023-02-17</a></li><li><a href="/cardano-updates/2023-03-03-ledger">2023-03-03</a></li><li><a href="/cardano-updates/2023-03-17-ledger">2023-03-17</a></li><li><a href="/cardano-updates/2023-03-31-ledger">2023-03-31</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-18-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-18T00:00:00.000Z" itemprop="datePublished">January 18, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-12---2023-01">2022-12 - 2023-01<a class="hash-link" href="#2022-12---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><p>The prototype is feature complete and thoroughly tested at the consensus level.
+In particular, we invested a lot of time in writing property-test for the
+mempool, and other crucial new parts of the prototype. Now we are ready to run
+integration tests and system-level benchmarks.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><p>We identified and fixed a slowdown in cross-era forecasting that was inhibiting
+our efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%
+speedup in full sync times in the baseline.</p><p>We also started prototyping a self-contained implementation of the Genesis
+dynamics (in particular of the parts intentionally not part of the ChainSync
+Jumping prototype) that furthered our understanding of subtleties and edge
+cases.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We worked on designing integration of new VRF and KES crypto into consensus.<ul><li><code>Crypto</code> class was split into two parts: <code>Crypto</code> and <code>HeaderCrypto</code>.</li><li>With the Ledger team&#x27;s help, we refactored <code>cardano-ledger</code> to use a proxy
+type for VRF.</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>PR went through its second review round. It is about to be merged, but it got
+delayed due to people&#x27;s availability during Christmas break.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We improved the capabilities of our <code>io-sim</code> library, which is key for testing
+and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger, which is important
+for reducing memory consumption of the Cardano node.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We added a tutorial on how to instantiate the Consensus layer to run custom
+ledgers. This should be a valuable resource to people looking to roll their
+own custom blockchain (either for commercial or research purposes).</li><li>We added an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Evaluate the extensibility of the prototype. Moving the UTxO to disk is only
+the first step towards reducing the memory requirements of Cardano node, and
+ensuring its long term sustainability. In the future, we plan on moving other
+large maps, such as delegation maps. The prototype should be able to
+accommodate these changes without any major modifications.</li><li>Start the integration with other downstream components, such as the wallet and
+db-sync. The idea is to identify and address any potential pain points that
+might arise during this integration.</li><li>Run integration tests and system-level benchmarks.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Finish benchmarking and tuning the fast-path ChainSync Jumping prototype</li><li>Expand and optimize the self-contained implementation of the Disconnect Rule
+(including density comparisons and the LoE)</li><li>Develop documentation and smoke tests for these components.</li><li>Start modifying the ChainSync Client for the LoP and LoR.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Help the Network team with diagnosing performance regression in block
+production.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Fix property-test failures concerning iterators (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3999" target="_blank" rel="noopener noreferrer">#3999</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>).</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Finish <a href="https://github.com/input-output-hk/ouroboros-network/issues/4145" target="_blank" rel="noopener noreferrer">mapping consensus</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-2">UTxO HD<a class="hash-link" href="#utxo-hd-2" title="Direct link to heading">​</a></h4><ul><li>Moving other parts of the ledger state to disk might require a major redesign
+of the prototype. For instance, if it turns out that the epoch change rules
+require access to the <em>full</em> ledger state. If this is the case, we might
+accept this risk and do the redesign after the initial release of UTxO-HD.</li><li>Integration with downstream clients might require more work than we
+anticipate.</li><li>Access to the benchmarking&#x27;s team time and resources.</li><li>Benchmarking results might show significant performance degradation, which
+will require additional work if such performance degradation is not accepted
+by other stakeholders.</li><li>The prototype&#x27;s performance might not be accepted by other stakeholders. Here
+we need to clearly communicate that this is necessary to ensure that as the
+blockchain size grows, the node can operate within reasonable memory
+constraints.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-13-network">Network Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>The primary goal of the networking team was to focus on the single relay
+release of P2P.  We fixed a number of small late bugs, and concluded QA
+&amp; performance testing.  Although it was discovered a regression in performance
+of  block production when P2P is enabled, relaying with P2P performs better
+comparing to a non p2p.  We concluded that this is not a blocker for the Single
+Relay Release which is planned shortly.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">Peer sharing</a> has gone through review and final review is
+just being done right now.  After merging it will still be disabled (hidden
+behind a flag) as it&#x27;s not safe without eclipse evasion.  We started
+implementing light peer sharing (i.e. include inbound peers into known peer set
+of the outbound governor).</p><p>We started a detailed eclipse evasion design, it will continue in the next
+quarter.</p><p>We also made a major revision of package structure of the network packages.  We
+ended up with a very clean dependency graph (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">pr #4155</a>).</p><p>Armando Santos delivered a talk at the <a href="https://sites.uclouvain.be/OPODIS2022/armando-details.html" target="_blank" rel="noopener noreferrer">ODOPIS 2022</a> conference on principles
+of distributed systems in Brussels.  The slides are available <a href="https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Neil Davies gave an invited seminar on <code>DeltaQ</code> at Université Catholique de
+Louvain.</p><p>We also found and fixed a few of bugs:</p><ul><li><p>a bug in keep alive mini-protocol which resulted in warm to cold transitions
+to be always executed through a timeout path rather than do a clean demotion
+(<!-- -->[pr #4168]<!-- -->).</p></li><li><p>fixed an assetion failure in the outbound governor (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>) </p></li></ul><ul><li>we fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will work towards the next release of P2P for block producer nodes.  This includes:</p><ul><li>analysing performance regression for BP nodes when using P2P</li><li>finish the work on controlling the block forger through node kernel (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a>)</li><li>address <a href="https://github.com/input-output-hk/ouroboros-network/issues/3907" target="_blank" rel="noopener noreferrer">issue #3907</a> and write a script to analyse deployment of P2P relays</li></ul><p>We would like also to push forward eclipse evasion.   Although most of the work
+has be done already the release of <code>io-sim</code> on <code>Hackage</code> will happen in the
+next quarter.</p><p>We would also like to address <a href="https://github.com/input-output-hk/ouroboros-network/issues/4244" target="_blank" rel="noopener noreferrer">chain-sync timeout issue</a> recently
+diagnosed by Karl Knutsson.</p><p>If time permits we would also like to address some technical debt, especially:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3387" target="_blank" rel="noopener noreferrer">enable nothunk in diffusion tests</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4085" target="_blank" rel="noopener noreferrer">refactor diffusion testnet simulation</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><p>The performance regression for block producer with P2P needs to be investigated
+in the near future.  This is blocker for the release of P2P on BP nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-ouroboros-network">Contributions to Ouroboros-Network<a class="hash-link" href="#contributions-to-ouroboros-network" title="Direct link to heading">​</a></h4><ul><li>We added <code>TraceDemoteLocalAsynchronous</code>, which enables notification of critical issues for SPOs</li><li>We fixed <code>cardano-ping</code> compatibility with <code>NodeToNodeV_10</code> (P2P, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">pr #4165</a>)</li><li>We fixed a bug in demotion peers to cold which affected P2P nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334" target="_blank" rel="noopener noreferrer">commit-61058aa5c2</a>)</li><li>Karl Knutsson enhanced <code>SendFetchRequest</code> (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47" target="_blank" rel="noopener noreferrer">commit-bb1c3dddee</a>), open-source contribution)</li><li>We turned <code>SizeInBytes</code> into a newtype.</li><li>We extended <code>CONTRIBUTING.md</code>, <code>README.md</code>, added <code>CODE_OF_CONDUCT</code>.</li><li>We fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li><li>We fixed a simulation bug found in <a href="https://github.com/input-output-hk/ouroboros-network/issues/4258" target="_blank" rel="noopener noreferrer">issue #4258</a></li><li>[pr #4168]</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-cardano-node">Contributions to Cardano-Node<a class="hash-link" href="#contributions-to-cardano-node" title="Direct link to heading">​</a></h4><ul><li>We maintained the Single Relay Release <a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">pr #4612</a>, (e.g. fixing CI issues,
+Rebasing it when necessary, publishing packages to Cardano Haskell Packages);</li><li>We enhanced <code>JSON</code> serialisation / deserialisation of <code>NodeToNodeVersion</code> and <code>NodeToClientVersion</code>;</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-iosim">Contributions to IOSim<a class="hash-link" href="#contributions-to-iosim" title="Direct link to heading">​</a></h4><ul><li>We started to use Cardano Haskell Packages for <code>IOSim</code> (<a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pr #48</a>)</li><li>We updated change log files</li><li>We added support of <code>ghc-9.4</code> (<a href="https://github.com/input-output-hk/io-sim/pull/50" target="_blank" rel="noopener noreferrer">pr #50</a>)</li></ul><p>We also addressed the following issues in <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> in order to prepare the package for publication on Hackage:</p><ul><li>refactored <code>io-classes</code> timers API (<a href="https://github.com/input-output-hk/io-sim/issues/46" target="_blank" rel="noopener noreferrer">issue #46</a>);</li><li>created a new package <code>si-timers</code> which exposes an interface using SI units
+and is safe on 32-bit systems (<a href="https://github.com/input-output-hk/io-sim/issues/59" target="_blank" rel="noopener noreferrer">issue #59</a>);</li><li>added monad transformers instances for classes defined in <code>io-classes</code> (<a href="https://github.com/input-output-hk/io-sim/issues/58" target="_blank" rel="noopener noreferrer">issue #58</a>);</li><li>created <code>io-classes-mtl</code> package which includes (experimental) instances for monad transformers;</li><li>provide <code>MonadMonotonicTimeNSec</code> in <code>io-classes</code> and <code>MonadMonotonicTime</code> in <code>si-timers</code> (so that <code>io-classes</code> follow the <code>base</code> package);</li><li>added  <code>registerCancellableDelay</code> in <code>si-timers</code> (which allowed us to hide fancy timer api and clean <code>io-classes</code>)</li><li>added support for <code>js_HOST_ARCH</code> (the new GHC JS backend)</li></ul><p>Note the <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> contains almost 40 commits, and was a major step forward for
+<code>io-sim</code> ecosystem.  We also prepared a draft <a href="https://github.com/input-output-hk/cardano-node/pull/4281" target="_blank" rel="noopener noreferrer">pr #4281</a> which updates
+<code>ouroboros-network</code>.</p><p>Other changes for <code>1.0.0.0</code> release on Hackage:</p><ul><li>Refactored test suite (<a href="https://github.com/input-output-hk/io-sim/pull/47" target="_blank" rel="noopener noreferrer">pr #47</a>)</li><li>Updated documentation, cabal files, <code>CONTRIBUTING</code>, <code>SECURITY</code> documents, etc in <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">pr #60</a>, currently under review.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/quarterly/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-13-open-source">Open-Source Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-quarterly-update">Open Source Quarterly Update<a class="hash-link" href="#open-source-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>In the last quarter the open-source initiative delivered a comprehensive report
+on the state of our repositories.  As part of this work stream we
+identified the key open-source repositories for the cardano project across all
+the projects  From a list of more than 500 repositories (some of which are
+forks) we identified key repositories which constitute the core of Cardano.
+20 of them were identified as to be transferred to the future MBO which will
+govern Cardano development.  Some where excluded (like <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> and
+<a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a>), to be govern by IOG, since they have a much broader
+application than Cardano itself, and thus we think their open-source future
+will be better outside of the Cardano umbrella.</p><p>Christian Taylor identified a number of ways we can improve our repositories to
+make them more attractive for open-source contributions by analysing each of
+them.  This includes adding or improving various documentation files, like
+<code>CONTRIBUTING</code> files, adding code of conduct, improving readme files, issue
+&amp; pull request templates etc.  Christian also computed various interesting
+metrics which gives a very good insight into the development practices: e.g.
+average merge ratio, average number of reviews, comments and many more!  The
+presentation is available <a href="https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ" target="_blank" rel="noopener noreferrer">here</a>.</p><p>We followed with work on the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  We included
+a standard code of conduct which is now used by most important projects in the
+Cardano space.  We included <code>cardano-node</code>&#x27;s security policy and added
+a responsible disclosure policy.  We also described how roles and
+responsibilities should be clarified.  This progress was made by
+a collaborative effort of the Cardano Core, Plutus and Architecture teams, and
+it wouldn&#x27;t be possible without Michael Peyton Jones, Arnaud Bailly, Kevin
+Hammond, Jared Corduan and Marcin Szamotulski.</p><p>We also improved the documentation of key repositories, by adding description,
+improving their <code>README</code> file &amp; <code>CONTRIBUTING</code> files, adding code of conducts
+following the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  This includes improvements to:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network" target="_blank" rel="noopener noreferrer"><code>ouroboros-network</code></a> (both <code>network</code> &amp; <code>consensus</code>)</li><li><a href="https://github.com/input-output-hk/cardano-ledger" target="_blank" rel="noopener noreferrer"><code>cardano-ledger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-node" target="_blank" rel="noopener noreferrer"><code>cardano-node</code></a></li></ul><p>And also</p><ul><li><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a></li><li><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a></li><li><a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer"><code>cardano-prelude</code></a> (work in progress)</li></ul><p>The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. </p><p>In this quarter we also identified a number of projects which can be published to
+<code>Hackage</code> (Haskell&#x27;s package repository) or <code>crate</code> (Rust package repository).
+The list contains 21 packages, 2 of which (<a href="https://hackage.haskell.org/package/hedgehog-extras" target="_blank" rel="noopener noreferrer"><code>hedgehog-extras</code></a> and
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>) are already published on Hackage and another 5 (from
+the <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> repository) are close to be published.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><p>The progress of the open-source project is tracked in <a href="https://github.com/orgs/input-output-hk/projects/60/views/1" target="_blank" rel="noopener noreferrer">this project</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/open-source">open-source</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-15-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li><p>As a consequence of the errors observed when running distributed mempool
+benchmarks, we re-designed the UTxO HD mempool integration, which fixed these
+errors and lead to a simpler and more maintainable design.</p></li><li><p>We focused on increasing test coverage for the UTxO-HD prototype. In
+particular, we added property tests for:</p><ul><li>Backing store (work ongoing)</li><li>Era transitions</li></ul></li><li><p>The property tests we added uncovered several bugs, which is a great result
+given the exponential increase in the cost of finding bugs as they are closer
+to deployment.</p></li><li><p>One of the errors found by our tests required us to work on improvements in
+the Haskell bindings for LMDB. This work is ongoing.</p></li><li><p>We started working on the mempool property tests that will exercise the new
+code paths that UTxO HD introduced.</p></li><li><p>We developed, benchmarked and tested an implementation of sequences of
+differences based on &quot;anti-diffs&quot;. Performance results of diff sequence
+operations show that we achieved a speedup of about <code>4x</code> across several
+scenarios. Note: this speedup is taking into account diff sequence operations
+only, so the consensus-wide speedup is less than <code>4x</code>.</p></li><li><p>We integrated the &quot;anti-diff&quot; prototype into the UTxO HD feature branch.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We wrote a simulator that demonstrates soundness of an abstract implementation
+of the new chain selection rule.</li><li>We elaborated a draft specification for the Genesis implementation (currently
+awaiting feedback from other architects).</li><li>We elaborated a draft specification for the ChainSync Jumping optimization. In
+particular, this includes a proof sketch that the latter preserves liveness
+and safety in all cases.</li><li>With the Networking team, we co-designed the eclipse avoidance mechanism,
+specifically its coherence with the Genesis implementation plan&#x27;s security
+and its dependence on the new ChainSync Jumping optimization.</li><li>We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a
+performance degradation wrt the baseline. Our optimization attempts so far
+have brought the performance closer to the baseline, but not yet to parity.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We did most of the heavy lifting required to integrate the Conway era into the
+Consensus layer.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We started working on enabling CI nightly tests, which revealed several test
+failures due to thunks being found it data structures used by the ledger and
+consensus. We made a lot of progress fixing those thunk errors, but some
+errors still remain.</p></li><li><p>We elaborated a <code>db-analyser</code> benchmark for the ledger operations. This led us
+to the identification of high processing time at epoch boundaries, and we
+could not observe any performance degradation that can be attributed to era
+changes.</p></li><li><p>We fixed a source of flakiness in the ChainDB QSM test.</p></li><li><p>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</p></li><li><p>We fixed a bug in the maximum-allowed ledger major protocol version.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We spent time making <code>cardano-updates</code> the central source of information for
+the core teams stakeholders.</li><li>We went through the Galois gap analysis and extracted actionable points to
+take on next.</li><li>Bart and Yogesh continued with their onboarding and stated making substantial
+contributions to consensus.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Finish the mempool property tests.</li><li>Benchmark the latest version of the prototype.</li><li>Elaborate a document that describes new integration test scenarios and pass it
+to the SDET team.</li><li>Bring query UTxO by address command performance on par with the baseline
+version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Receive and incorporate Duncan&#x27;s feedback on the first draft specification for
+the Genesis implementation.</li><li>Begin prototyping the first genesis implementation, unless the first draft
+needs major changes.</li><li>Draft a second revision of the Genesis report.</li><li>Review the second revision with a wider audience, which includes at least
+Alexander Russell. That feedback will drive a third and hopefully final
+revision.</li><li>Investigate how to mitigate the ~30% slowdown we have observed so far in the
+ChainSync jumping prototype, and try to mitigate it. In particular, we might
+need to optimize the existing BlockFetch logic.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Enabling nightly CI tests.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Merge the tutorial document Galois wrote; requires CI integration.</li><li>Come up with our own documentation improvements, many of which were suggested
+in the Galois gap analysis.</li><li>Try to hire a new team member.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-09-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-most-important-improvements">Summary of most important improvements<a class="hash-link" href="#summary-of-most-important-improvements" title="Direct link to heading">​</a></h3><p>During this quarter the networking team delivered low level specification of
+peer sharing &amp; eclipse evasion.  We held a session with the consensus &amp; the
+scientists; we got a positive feedback on the design.</p><p>Further we focused on implementation of peer sharing.  We produced a <a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">detail
+design</a> and an <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">early implementation</a>.</p><p>We prepared the <em>P2P Single Relay Release</em> (<code>cardano-node-1.35.5</code>).  It
+includes over <a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">130 patches</a> of network stack improvements over the
+previous version <code>1.35.4</code>, which were accomplished over a longer period of
+time.  Among them are both bug fixes and UX improvements for stake pool
+operators like simplified format of the <a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">topology file</a>, or
+improvements in the logged messages:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">tracing of early consensus exceptions</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">tracing of demotion of local root peers</a> (traced with
+<code>Warning</code> severity), the trace is called <code>TraceDemoteLocalAsynchronous</code>, in
+<code>json</code> format it is encoded as <code>DemoteLocalAsynchronous</code>.  For an SPO
+tracking these demotion is vital (such demotion could indicate that a block
+producer is no longer connected to its relays or vice versa)</li></ul><p>We also provide better integration with <a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">systemd</a> (socket
+activation improvements) or improvements in the networking stack:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3785" target="_blank" rel="noopener noreferrer">exit policies</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3915" target="_blank" rel="noopener noreferrer">peer metrics improvements</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">DNS TTL</a> improvements (which make it harder to misconfigure the
+system, an issue discovered by the performance &amp; monitoring team),</li><li>do not trigger inbound idle timeout for <code>node-to-client</code> connections (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3844" target="_blank" rel="noopener noreferrer">pr
+#3844</a>), an issue reported to us by Matthias Benkort from
+Cardano Foundation.</li></ul><p>Duncan has been making progress with the input endorsers demo. His simulation
+provides a useful animated visualisation and live quantification of behaviour
+of the modeled design.</p><p>We also improved our e2e diffusion simulation by implementing header-body
+split, similar to what the real implementation does.</p><p>We also made some advances towards our future goals of P2P release for block
+producer nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a> - in review) &amp; for Daedalus users
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3968" target="_blank" rel="noopener noreferrer">pr #3690</a> - merged).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><ul><li><p>We expanded diffusion simulation with block-fetch protocol bringing it closer
+to the production system.</p></li><li><p>We addressed some additional technical depth in diffusion simulation</p></li><li><p>We slightly improved documentation &amp; CI of io-sim and typed-protocols
+repositories for open-source contributors.</p></li><li><p>We closed a number of issues towards publishing io-sim on Hackage (only two
+essential issues are left open).</p></li><li><p>We pushed a branch of typed-protocols which captures one of the developer UX
+problems in the API which we need to solve.</p></li><li><p>We identified and fixed an issue related to systemd sockets.</p></li><li><p>We identified and fixed an issue in consensus initialisation not giving
+feedback on early errors.</p></li><li><p>We deployed RT View, identified a number of issues which were communicated to
+the performance &amp; monitoring team.</p></li><li><p>We finished high level &amp; detailed design of peer sharing, very early
+implementation of peer sharing is done (note that peer sharing cannot be
+safely deployed without eclipse evasion &amp; genesis).</p></li><li><p>We finished high level design of eclipse evasion, and started working on
+a detailed design.</p></li><li><p>We were assigned the role of release engineer for 1.35.5 release (the P2P
+single relay release); we prepared a cardano-node for 1.35.5 release which
+contains more than 130 patches of just network stack improvements done over
+last few months.</p></li><li><p>We diagnosed and fixed an tricky bug in the peer state actions (a component
+which sits between outbound governor and connection manager). That bug was
+introduced earlier this year and never released. It was caught by the QA
+testing framework. We expanded our diffusion simulation to cover such case and
+also mitigated a chance for reintroducing such a bug in future.</p></li><li><p>We identified and quite likely mitigated a misconfiguration in the
+benchmarking cluster (next benchmarking run will confirm our hypothesis).</p></li><li><p>We simplified the format of p2p topology file, we got positive feedback from
+SPOs.</p></li><li><p>We raised severities of some of the logging messages, which is an important
+improvement for SPOs, exchanges and other users of the system.</p></li><li><p>We worked on input endorsers simulation which gives both animated and
+quantified live feedback on network operation, using a simplified model of
+a TCP/IP network. </p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-quarter">Next quarter<a class="hash-link" href="#next-quarter" title="Direct link to heading">​</a></h2><ul><li><p>Release the Single Relay P2P Release <code>1.35.5</code>.</p></li><li><p>Carry on with Peer Sharing (review, testing).</p></li><li><p>Deliver a talk at <a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">Conference on Principles of Distributed Systems 2022</a> in Brussels, Belgium.</p></li><li><p>Present Detailed Design of Eclipse Evasion and start implementation phase.</p></li><li><p>Work on P2P Block Producer release.</p></li><li><p>Carry on with publishing of <code>io-sim</code> on <code>Hackage</code>.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-07-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>We finished a minimal ledger era capable of master key rotation.
+This will be re-purposed our upcoming work.</li><li>We have the humble beginnings of a proper ledger API.</li><li>We improved the problematic cost model serialization
+(recall the song and dance about updating the cost model one epoch after the hard fork).</li><li>We have added benchmarks for problematic areas.</li><li>Massive repository restructure and cleanup.<ul><li>Unified and consistent variable name schemes (not completely finished, but nearly there).</li><li>Massive reduction in type constraints, which causes a lot of developer friction,
+in our code and also downstream.</li><li>More organized module structures.</li><li>Improved generators for our property tests.</li><li>We removed our dependency on cardano-prelude.</li></ul></li><li>The formal ledger model has come a long way.<ul><li>We created a fork of Agda that provides some meta-programming support for the ledger rules.</li><li>We have a large amount of the basic UTxO support in the model.</li><li>We can generate a good looking PDF from the model.</li><li>We can produce Haskell from the model.</li><li>We have a nice finite set theory library that we can use for many of the ledger rules.</li><li>We have nix support for the model.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h2><ul><li>Individual tracking of deposits. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>]</li><li>Versioned CBOR encoders/decoders. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>]</li><li>New ledger era transaction body (and the surround work associated with it).</li><li>Designs for the next ledger era.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-10-07-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-quarterly-update">Node-Api-Cli Quarterly Update<a class="hash-link" href="#node-api-cli-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0</li><li>Major clean up of stale iusses + PRs.</li><li>Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs</li><li>cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.</li><li>cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.</li><li>General documentation updates and improvements</li><li>Addition of tx-mempool command which allows users to:<ul><li>Query the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul></li><li>Initial refactoring of cardano-testnet</li></ul><p>Next quarter</p><ul><li>cardano-api<ul><li>Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.</li></ul></li><li>cardano-testnet<ul><li>Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - <a href="https://github.com/input-output-hk/cardano-node/issues/4598" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/issues/4598</a></li></ul></li><li>Serenity<ul><li>Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.</li></ul></li><li>General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/cli-api-quarterly">cli-api-quarterly</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/quarterly"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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+</body>
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+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+    <channel>
+        <title>Cardano Development Updates Blog</title>
+        <link>https://input-output-hk.github.io/cardano-updates/quarterly</link>
+        <description>Cardano Development Updates Blog</description>
+        <lastBuildDate>Thu, 07 Dec 2023 21:19:58 GMT</lastBuildDate>
+        <docs>https://validator.w3.org/feed/docs/rss2.html</docs>
+        <generator>https://github.com/jpmonette/feed</generator>
+        <language>en</language>
+        <item>
+            <title><![CDATA[Consensus Q2 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-consensus</link>
+            <guid>2023-Q2-consensus</guid>
+            <pubDate>Thu, 07 Dec 2023 21:19:58 GMT</pubDate>
+            <description><![CDATA[2023-04 -- 2023-06]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04----2023-06">2023-04 -- 2023-06<a class="hash-link" href="#2023-04----2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished a major prototype refactoring, which includes:<ul><li>A better and finer grained DB lock mechanism.</li><li>Elimination of race conditions.</li><li>Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.</li><li>Architectural simplifications and performance improvements.</li></ul></li><li>We implemented a new package to support db-sync integration with UTxO-HD.</li><li>We ran another set of ad-hoc benchmarks:<ul><li>We uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>.</li><li>The synchronization and replay speed are as expected.</li><li>However, we uncovered memory consumption issues (see figure below).<ul><li>The in-memory backend is consuming more memory than the baseline.</li><li>The LMDB backend shows an unexpected memory usage peak.</li><li>Investigation on these issues is ongoing.</li></ul></li></ul></li><li>We integrated the latest changes in <code>main</code> branch.<ul><li>This required a re-design of the mempool to include the mempool fairness
+improvement.</li></ul></li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks-74f9d76c2602f09652f584cc4d6a0962.png" width="2500" height="1700" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>The Genesis work for this PI focused on an high-priority issue from the IOG Researchers' feedback on the proposal.<ul><li>This particular question was not anticipated when the Q2 PI was planned.</li><li>As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.</li><li>That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.</li></ul></li><li>The IOG Researchers' feedback on the design was very valuable. It had two primary effects.</li><li>Outcome 1: We re-introduced distinct behaviors when the node is "syncing" versus when it is "caught up".<ul><li>This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.</li><li>The additional design complexity is relatively small.</li></ul></li><li>Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.<ul><li>The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.</li><li>All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.</li><li>Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.</li><li>The primary invention was a model for bounding how much benefit the adversary's long-range attack could possibly gain from Praos's natural short forks.</li></ul></li><li>Relevant questions that the IOG Researchers are still assessing.<ul><li>These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.</li><li>Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?</li><li>Question 2: what is the upper bound on how much grinding can improve the adversary's leader schedule within some Genesis window?</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We performed an analysis on number of file descriptors used by Consensus, this
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough, thus improving the user (eg node
+operator) experience.</li><li>We implemented a mempool fairness improvement, by which transactions are
+guaranteed to be processed irrespective of their size.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in followers logic, which was discovered by our <code>QuickCheck</code>
+property tests.</li><li>We created an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB
+server</a>. This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> tool, which can be used in disaster recovery and benchmarking scenarios.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/161" target="_blank" rel="noopener noreferrer">benchmarks comparison tool</a> that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance <em>improvements</em> introduced by the Ledger team in version <code>0.6.0.0</code> of Consensus wrt version <code>0.5.0.0</code>.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-beacon-graph-ded65e814bfe6d927faa1c5c66bbbfad.png" width="1840" height="1372" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released <code>fs-sim</code> as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.</li><li>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new repository</a>, splitting
+it from the <code>ouroboros-network</code> repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).</li><li>We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).</li><li>We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>We will <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">get UTxO-HD ready for handover</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Q2 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-network</link>
+            <guid>2023-Q2-network</guid>
+            <pubDate>Thu, 07 Dec 2023 21:19:58 GMT</pubDate>
+            <description><![CDATA[2023-04 - 2023-06]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised the design of eclipse evasion and implemented its mechanism which
+relays on connectivity to <em>big ledger peers</em>.  <em>Big ledger peers</em> are the
+largest ledger peers which accumulate 90% of stake (currently there are less
+than 1000 of them).  The outbound governor has new targets for <em>known</em>,
+<em>established</em> and <em>active</em> big ledger peers which work in a similar way that
+such targets work for ledger peers.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4662" target="_blank" rel="noopener noreferrer">ouroboros-network#4662</a> PR is
+currently in review.</p><p>As part of this work we also identified a bug which would prevent a node to
+connect to itself.  Such connections are not easily detectable and are expected
+to be dropped by the churn mechanism, nonetheless they should not be buggy.
+The failure was discovered thanks to our e2e simulation of diffusion using
+<code>io-sim</code> &amp; property based testing.</p><p>The PR also refactors the heart of the <code>ouroboros-network</code> interface reducing
+technical debt that would otherwise accumulate.</p><p>We also identified a possible improvement in the churn mechanism, which will be
+implemented in Q3.  Churn needs to await for peers to terminate, we can
+improve the synchronisation. <!-- -->[ouroboros-network#4617]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ecosystem-p2p-deployment-progress">Ecosystem P2P Deployment Progress<a class="hash-link" href="#ecosystem-p2p-deployment-progress" title="Direct link to heading">​</a></h4><p>We reached <strong>50% of stake in hands of SPOs who run at least on P2P relay</strong>.  Now
+also Emurgo and CF are running some P2P relays. Also 20% of IOG relays are
+running in P2P mode.</p><p><img loading="lazy" alt="P2P Progress" src="/cardano-updates/assets/images/2023-07-06-p2p-progress-194a909569eebb016b1f24fb8941e2cc.png" width="1024" height="768" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented <em>bootstrapping for peer sharing</em> (also known as light peer
+sharing).  New downstream (inbound) peers are now added to the <em>known peers</em> of
+the <em>outbound governor</em>.  Together with peer sharing this allows for non
+registered relays to propagate through the network. <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">ouroboros-network#3596</a></p><p><em>Please note that peer sharing is disabled by default and is not considered safe
+until Bootstrap Peers (see below) or Genesis is implemented.</em></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="diffusion-p2p">Diffusion (P2P)<a class="hash-link" href="#diffusion-p2p" title="Direct link to heading">​</a></h4><ul><li><p>We designed a feature which will reduce the load on IOG relays (in future
+also run by CF &amp; Emurgo).  The feature consists of two parts.  A new source
+of peers called <em>bootstrap peers</em> (obtained from via an https request), the
+ability to switch from bootstrap peers to ledger peers if the node is synced
+(we are collaborating with the consensus team on the interface <a href="https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md" target="_blank" rel="noopener noreferrer">Bootstrap
+Peers IER</a>).   This feature will be completed in Q3.
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">ouroboros-network#4530</a></p></li><li><p>We published a blog post about <a href="https://engineering.iog.io/2023-06-28-p2p" target="_blank" rel="noopener noreferrer">P2P design &amp; implementation</a>.</p></li><li><p>Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">ouroboros-network#4559</a>.</p></li><li><p>We merged changes which allow the consensus layer to start / stop block
+forging thread.  This will allow to deploy P2P block producing nodes which
+serve as a live backup node. <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a></p></li><li><p>We fixed a few bugs in local root peers DNS resolution service:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4583" target="_blank" rel="noopener noreferrer">ouroboros-network#4583</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4571" target="_blank" rel="noopener noreferrer">ouroboros-network#4571</a>.</p></li><li><p>We limited concurrency of DNS name resolutions: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">ouroboros-network#4596</a>.</p></li><li><p>Galois Inc implemented query option for Handshake: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</p></li><li><p>We fixed handshake query timeout: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">ouroboros-network#4608</a>.</p></li><li><p>We implemented warm valency for local root peers.  This can help when using
+DNS names in local root peers which resolve to many IP addresses. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a></p></li><li><p>We merged handshake changes which allow query protocol versions.  Thanks to
+James Parker from Galois Inc.: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a>.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-improvements--developments">Other Improvements &amp; Developments<a class="hash-link" href="#other-improvements--developments" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cddl">CDDL<a class="hash-link" href="#cddl" title="Direct link to heading">​</a></h4><ul><li><p>We added <code>node-to-node</code> and <code>node-to-client</code> CDDL specs / tests for encoding
+of <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>.  </p></li><li><p>We clarified an inconsistency between CDDL spec and implementation which is
+highly polymorphic.  We designed and implemented a fix for <code>tx-submission</code>
+and <code>local-tx-submission</code> mini-protocols.  Specs for other mini-protocols will
+be improved at a later stage. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">ouroboros-network#4580</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ping"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping" target="_blank" rel="noopener noreferrer">Cardano Ping</a><a class="hash-link" href="#cardano-ping" title="Direct link to heading">​</a></h4><ul><li><p><code>cardano-ping</code> command was deprecated in favour of <code>cardano-cli ping</code> (the
+transition was done by the <code>node</code> team).</p></li><li><p>Support for <code>node-to-client</code> protocol using Unix sockets.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">ouroboros-network#4601</a></p></li><li><p>Support for <code>NodeToNodeV_11</code> and <code>NodeToClientV_16</code>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4587" target="_blank" rel="noopener noreferrer">ouroboros-network#4587</a></p></li><li><p><code>cardano-cli ping</code> is now using <em>ISO8601</em> format for timestamps.  Formatting of
+messages was improved. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">ouroboros-network#4593</a></p></li><li><p><code>cardano-cli ping</code> has a new <code>--query-versions</code> flag which allows to query
+supported versions by the remote node.  This is supported by
+<code>cardano-node-8.1.0</code>. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">ouroboros-network#4589</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">cardano-node#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim"><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">IOSim</a><a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><ul><li><p>We fixed timeouts &amp; delays in <code>io-classes</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</p></li><li><p>We released <code>strict-stm-1.1.0.1</code> on Hackage which fixed a bug in package
+description file: <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">io-sim#101</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols"><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer">Typed Protocols</a><a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h4><ul><li>We published haddocks of <code>typed-protocols</code> at
+<a href="https://input-output-hk.github.io/typed-protocols" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/typed-protocols</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-client"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client" target="_blank" rel="noopener noreferrer">Cardano Client</a><a class="hash-link" href="#cardano-client" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in <code>cardano-client-0.1.0.2</code> release which results in clients
+(e.g. <code>db-sync</code>) negotiate an experimental protocol version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>After the split between consensus &amp; network, we made <code>cardano-client</code>
+independent of <code>ouroboros-consensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</p></li><li><p>We wrap all exceptions in <code>DiffusionError</code>: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">ouroboros-network#4537</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ci-improvements">CI improvements<a class="hash-link" href="#ci-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We switched to use GitHub merge queues in <code>ouroboros-network</code>, <code>io-sim</code> and
+<code>typed-protocols</code> repositories; <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4546" target="_blank" rel="noopener noreferrer">ouroboros-network#4546</a>.</p></li><li><p>We cleaned &amp; updated scripts which run on CI.</p></li><li><p>We implemented a script to verify &amp; release packages on CHaP; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">ouroboros-network#4542</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">ouroboros-network#4573</a>.</p></li><li><p>We implemented a new CI script and cleaned existing ones:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">ouroboros-network#4572</a>.</p></li><li><p>We don't install cryptographic libraries on CI anymore as none of our
+packages requires them; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">ouroboros-network#4539</a>.</p></li><li><p>Improved caching of dependencies: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">ouroboros-network#4553</a>.</p></li><li><p>We made it possible to trigger building haddock manually:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">ouroboros-network#4549</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-94--96">GHC 9.4 &amp; 9.6<a class="hash-link" href="#ghc-94--96" title="Direct link to heading">​</a></h4><p>We made all repositories under our control compile with <code>ghc-9.4</code> and <code>ghc-9.6</code>
+which includes <code>ouroboros-network</code>, <code>io-sim</code>, <code>typed-protocols</code> and
+<code>Win32-network</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will continue towards our <a href="https://github.com/orgs/input-output-hk/projects/39/views/30" target="_blank" rel="noopener noreferrer">aspirational roadmap</a>.</p><ul><li>We will continue reviewing eclipse evasion.</li><li>As <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a> was merged, we are making progress towards
+releasing P2P on block production nodes.  We hope to analyse performance
+regression on such nodes observed on the benchmarking cluster. <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=6875505" target="_blank" rel="noopener noreferrer">roadmap-3887</a></li><li>We are also focused on <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=8920085" target="_blank" rel="noopener noreferrer">roadmap-3969</a>. Note that it was expanded in Q2.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Q2 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q2-sre</link>
+            <guid>2023-Q2-sre</guid>
+            <pubDate>Thu, 07 Dec 2023 21:19:58 GMT</pubDate>
+            <description><![CDATA[2023-04 - 2023-06]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Expanding the darwin CI cluster and adding aarch64 builder support</li><li>Adding bare metal capability to bitte clusters</li><li>Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality</li><li>Creation of pool performance analysis queries and scripting</li><li>Migration of testnet metadata server to cardano-world</li><li>Cardano shelley qa migration to cardano-world</li><li>Cardano sanchonet environment spin up to test Conway era functionality</li><li>Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with the conversion of mainnet to using p2p topology</li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & Tracing Q3 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q3-performance-and-tracing</link>
+            <guid>2023-Q3-performance-and-tracing</guid>
+            <pubDate>Thu, 07 Dec 2023 21:19:58 GMT</pubDate>
+            <description><![CDATA[2023-07 - 2023-09]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><ul><li>Release benchmarking</li><li>Developing and running UTxO-HD benchmarks - in-memory flavour</li><li>P2P benchmarks, facilitating rollout</li><li>Production-readiness of the new Nomad cluster has been reached</li><li>Optimization of and introspection capability for the new tracing system</li><li>GHC9 performance investigation (and possible remedy)</li><li>Conensus QTAs: first real-world application of prototype</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="release-benchmarking">Release benchmarking<a class="hash-link" href="#release-benchmarking" title="Direct link to heading">​</a></h4><p>Ongoing release benchmarking is a crucial safeguard to <code>cardano-node</code>'s release cycle from a performance perspective. We've performed and analyzed benchmarks for node versions <code>8.2.x</code> to <code>8.5</code> throughout Q3.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-benchmarks">UTxO-HD benchmarks<a class="hash-link" href="#utxo-hd-benchmarks" title="Direct link to heading">​</a></h4><p>Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-benchmarks">P2P benchmarks<a class="hash-link" href="#p2p-benchmarks" title="Direct link to heading">​</a></h4><p>In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-nomad-cluster">New nomad cluster<a class="hash-link" href="#new-nomad-cluster" title="Direct link to heading">​</a></h4><p>The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received
+various rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest
+of our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it
+ready for production use.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system">New tracing system<a class="hash-link" href="#new-tracing-system" title="Direct link to heading">​</a></h4><p>Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that
+it is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  </p><p>Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating
+end user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc9-performance">GHC9 performance<a class="hash-link" href="#ghc9-performance" title="Direct link to heading">​</a></h4><p>In Q3, a joint investigation with DevX into GHC9's behaviour revealed where and how GHC9 misses opportunities for
+optimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable
+those optimizations - which is still being validated.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h4><p>In collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations'
+performance characteristics. It's now applicable, and being applied, to a real-world task - namely
+gathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking:<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h4><p>In Q4, the focus will be on:</p><ul><li>facilitating the next mainnet release</li><li>benchmarking runs in the Conway era</li><li>developing benchmarks / workloads for Conway-exclusive actions</li><li>implementing a specialized benchmark setup for the UTxO-HD on-disk variant</li><li>developing new Plutus benchmarks to safeguard Plutus V3</li><li>benchmarks regarding the rollout of P2P</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h4><p>For certain blocking performance issues we've located the cause, or even found a solution in a cross-team effort. In Q4 we'll advance that work to ensure the ongoing
+release cycle for mainnet, as well as make GHC9 become a viable release platform.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system-1">New tracing system<a class="hash-link" href="#new-tracing-system-1" title="Direct link to heading">​</a></h4><p>For the new tracing system, we'll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-monitoring">UTxO-HD monitoring<a class="hash-link" href="#utxo-hd-monitoring" title="Direct link to heading">​</a></h4><p>We'll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h4><p>From Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h4><p>We will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with <code>cardano-node</code>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-component-qtas-co-development">Consensus component QTAs (co-development)<a class="hash-link" href="#consensus-component-qtas-co-development" title="Direct link to heading">​</a></h4><p>In Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Q3 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-Q3-sre</link>
+            <guid>2023-Q3-sre</guid>
+            <pubDate>Thu, 07 Dec 2023 21:19:58 GMT</pubDate>
+            <description><![CDATA[2023-07 - 2023-09]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Completion of mainnet relay networking conversion to p2p topology</li><li>Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality</li><li>Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines</li><li>Creation of a nix content addressed packages repository, <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a>:<ul><li>To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells</li></ul></li><li>Creation of a cardano performance benchmarking cluster, <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf</a>:<ul><li>To replace legacy cluster benchmark tooling</li></ul></li><li>Creation of a cardano cluster composition repository, <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a>:<ul><li>For enabling multi-cluster, multi-role cardano network deployments</li></ul></li><li>Creation of a cardano testnets repository, <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a>:<ul><li>Utilizing cardano-parts for testnet deployments</li></ul></li><li>Creation of a sanchonet demo repository, <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a>:<ul><li>Utilizing cardano-parts for fast sanchonet test environment and demo purposes</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with migration of cardano-world testnets to cardano-playground</li><li>Proceed with spinup of mainnet p2p bootstrap cluster</li><li>Scale down mainnet non-p2p legacy cluster at the appropriate time</li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Quarterly Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-25-consensus</link>
+            <guid>2023-04-25-consensus</guid>
+            <pubDate>Tue, 25 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Consensus Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished the testing activities for the prototype, which involved adding
+new tests, and fixing and enabling temporarily disabled tests.</li><li>We spent a substantial amount of effort refactoring and cleaning the
+prototype.</li><li>We audited the UTxO HD prototype to make sure it can accommodate the migration
+of other tables (eg stake-keys registration) from memory to disk. The result
+of the audit was positive.</li><li>We ran ad-hoc benchmarks for reading keys and flushing values to disk. No
+unexpected costs found.</li><li>We ran the first system level benchmarks. The performance regressions reported
+were due to an unrealistic snapshotting rate. We need to re-run them again
+after we design a more fine grained locking mechanism.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We elaborated a roadmap of the remaining work for Genesis.</li><li>We presented the design to the IOG Researchers and PNSol on February 20. The
+design was well received. We updated the Genesis design with the researcher's
+feedback.<ul><li>We plugged the new DoS vector identified during the aforementioned
+presentation.</li></ul></li><li>We developed a generator for adversarial leader schedules that satisfy key
+Ouroboros properties, which will be used to test the Genesis design.<ul><li>The generator enables use of smaller Ouroboros parameters, which makes
+extrema more likely and counterxamples easier interpret.</li></ul></li><li>We wrote up the latest design iteration.</li><li>We continued benchmarking the Chain Sync Jumping prototype. In particular:<ul><li>We debugged the prototype's performance regression, and unmasked the
+actual cause by patching our initial theory (bad queuing behavior)</li><li>We identified and validated the actual cause (a pathological case in
+BlockFetch tiebreaker).</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother
+to serve a local immutable DB.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We integrated the Conway era into consensus.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug with followers, which was discovered by property tests.</li><li>We developed a DSL for specifying and running ChainDB test cases.</li><li>We fixed failing tests with iterators.</li><li>We created micro-benchmarks for adding transactions to the mempool.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released a new technical documentation site for consensus.</li><li>We factored out several packages to external repositories. Some of this work
+originated in the UTxO HD workstream.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/28</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/33" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/33</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/32" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/32</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/31" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/31</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Design Consensus side of hardfork-enactment in the Voltaire phase
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4180" target="_blank" rel="noopener noreferrer">#4180</a>).</li><li>Estimate the number of file descriptors Consensus needs
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/20" target="_blank" rel="noopener noreferrer">#20</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define
+for consensus. Pick one and implement benchmarks for it.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Onboard a new team member.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Q1 2023 Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-04-network</link>
+            <guid>2023-04-04-network</guid>
+            <pubDate>Tue, 04 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[2023-01 - 2023-03]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gradual-dynamic-p2p-release-on-mainnet">Gradual dynamic P2P release on mainnet<a class="hash-link" href="#gradual-dynamic-p2p-release-on-mainnet" title="Direct link to heading">​</a></h4><p>We released two version of <code>cardano-node</code> with dynamic P2P capabilities:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6" target="_blank" rel="noopener noreferrer"><code>1.35.6</code></a><ul><li>we found and fixed a bug in exception handling in <code>peer-state-actions</code><a href="https://github.com/input-output-hk/ouroboros-network/pull/4357" target="_blank" rel="noopener noreferrer">pull-4357</a></li><li>we found and fixed a busy loop when demoting a peer from hot to warm <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">pull-4385</a> </li></ul></li><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7" target="_blank" rel="noopener noreferrer"><code>1.35.7</code></a><ul><li>includes interoperability in the legacy non-p2p network stack <a href="https://github.com/input-output-hk/outoboros-network/pull/4467" target="_blank" rel="noopener noreferrer">pull-4467</a></li></ul></li><li>we fixed a busy loop of demotion &amp; promotions: <code>warm -&gt; hot -&gt; warm</code>[pull-4485]<!-- --> /it will be included in <code>cardano-node-8.0.0</code> release/.</li></ul><p>Currently there are more than 200 P2P relays on mainnet.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented /peer sharing/ <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull-4019</a> which will be available as an
+experimental feature in one of the future <code>cardano-node</code> releases.</p><p>We implemented /light peer sharing/, e.g. adding inbound connections to the set
+of known peers of the outbound governor, which allows to bootstrap relays not
+registered on chain.  This complements peer sharing.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4277" target="_blank" rel="noopener noreferrer">pull-4277</a> is in
+late review stages.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised design of eclipse evasion and we started implementing it.  We
+have an initial implementation (not merged). We are in the process of extending
+our test suite to cover new implementation details: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>, <a href="https://github.com/input-output-hk/outoboros-network/pull/4462" target="_blank" rel="noopener noreferrer">pull-4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h4><p>Galois has been making progress on <em>Cardano Network Service Assurance</em> project.</p><ul><li><p>In cardano-node, they have developed a <code>datapoint</code> abstraction that creates
+a queue of (existing) log events, they now have two such <code>datapoint</code>s (of log
+events) implemented.</p></li><li><p>They have developed a <code>datapoint</code> client executable that can connect to a node
+which serves the "new tracing".</p></li><li><p>They have been exploring approaches for the consolidation and analysis of
+<code>datapoint</code> data to extract actionable network health status.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li>We made it possible to configure accepted connections limit <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">pull-4902</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We fixed a bug in network simulation implementation of TCP simultaneous open <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">pull-4265</a>.</p></li><li><p>We introduced header-body split in the diffusion simulation <a href="https://github.com/input-output-hk/outoboros-network/pull/4419" target="_blank" rel="noopener noreferrer">pull-4419</a> (in review).</p></li><li><p>We introduced initiator only nodes in the diffusion simulation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4280" target="_blank" rel="noopener noreferrer">pull-4280</a>.</p></li><li><p>We fixed a connection-manager test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue-4370</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We refactored <code>Snocket</code> interface decoupling it from the multiplexer
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">pull-4260</a>. This simplified some aspects of the KES agent implementation.</p></li><li><p>We introduces a record for CBOR codecs which are used for various data
+structures by mini-protocol codecs <a href="https://github.com/input-output-hk/outoboros-network/pull/4430" target="_blank" rel="noopener noreferrer">pull-4430</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h4><ul><li>We explained some limitations of CDDL in our technical report <a href="https://github.com/input-output-hk/ouroboros-network/pull/4351" target="_blank" rel="noopener noreferrer">pull-4351</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h4><ul><li>We fixed implementation of <code>MVar</code>'s <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">pull-70</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nothunks">NoThunks<a class="hash-link" href="#nothunks" title="Direct link to heading">​</a></h4><ul><li>We published a new version of <a href="https://hackage.haskell.org/package/nothunks" target="_blank" rel="noopener noreferrer"><code>nothunks</code></a> library to Hackage.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Finish implementation &amp; testing of eclipse evasion <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>.</li><li>Optimise connectivity to peers behind firewall <a href="https://github.com/input-output-hk/ouroboros-network/issues/4381" target="_blank" rel="noopener noreferrer">issue-4381</a>.</li><li>Finish the work on enabling block production dynamically to allow using P2P
+on block producers <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">issue-3159</a>.</li><li>If time permits we would like also to reserve some time for finishing
+publication of <code>io-sim</code> to Hackage.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-04-03-ledger</link>
+            <guid>2023-04-03-ledger</guid>
+            <pubDate>Mon, 03 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Ledger Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cips">CIPs<a class="hash-link" href="#cips" title="Direct link to heading">​</a></h4><ul><li><strong>Entering the Voltaire phase</strong> -
+CIP-1694 received a major update after participation in the design has expanded to
+more and more people, including those who attended the Colorado workshop.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>.</li><li><strong>Ledger CIP category</strong> -
+The ledger team continues to embrace the CIP process, and has begun the process of
+registering the ledger as an official CIP category.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP-84</a>.</li><li><strong>Ledger serialization</strong> -
+A CIP for the ledger serialization deprecation cycle has been accepted.
+See <a href="https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080" target="_blank" rel="noopener noreferrer">CIP-80</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="formal-ledger-model">Formal ledger model<a class="hash-link" href="#formal-ledger-model" title="Direct link to heading">​</a></h4><p>Our new formal specifications backed by Agda have seen a lot of progress.
+The majority of the ideas in CIP-1694 are now present, and we have made enough progress
+that we can now safely say that the PDF produced by the Agda model will be the
+official ledger specification for the Conway ledger era.
+See <a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">the repository</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h4><p>Progress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.
+The major component still missing is the DRep stake distribution, which still presents some
+technical challenges.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="drep-stake-distribution-computation">DRep stake distribution computation<a class="hash-link" href="#drep-stake-distribution-computation" title="Direct link to heading">​</a></h4><p>Adding another large stake distribution to the ledger state must proceed with caution.
+We do not want the memory used by the node to increase too much,
+and performance problems can lead to reduced block production.
+We have prototyped, tested, and benchmarked several approaches that could give us
+the current DRep stake distribution at each epoch boundary.
+This has very important implications, since we want every ADA holder to be able to at any
+time (such as during a contentious vote) register themselves as a DRep and still have time
+to vote themselves on the issue.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h4><p>The ledger has made some wonderful improvements over the past six months,
+but which entail a significant amount of integration efforts:</p><ul><li>Our new versioned CBOR schemes</li><li>Individual deposit tracking</li><li>An improved cross-era interface utilizing lenses</li><li>A new ledger API</li><li>Re-arranging the ledger stake in preparation for CIP-1694</li><li>Versioning our Haskell packages
+using <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaPs</a>.</li><li>Consistent conventions for variable names</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a>]
+[<a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/378" target="_blank" rel="noopener noreferrer">pull-378</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/376" target="_blank" rel="noopener noreferrer">pull-376</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/373" target="_blank" rel="noopener noreferrer">pull-373</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/370" target="_blank" rel="noopener noreferrer">pull-370</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/361" target="_blank" rel="noopener noreferrer">pull-361</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/4976" target="_blank" rel="noopener noreferrer">pull-4976</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">pull-5013</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h4><p>Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.
+Deposits were returned according to the current protocol parameters.
+When the values of these two protocol parameters change, the deposit pot
+is adjusted by adding to, or removing from, the reserves.</p><p>This has several problems:</p><ul><li>Most people expect a deposit to be paid back exactly.</li><li>We cannot increase the deposit amount once the reserves hits zero.</li><li>If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.</li><li>Because of the problems above, it is going to be incredibly hard to ever change the values.</li><li>There is a serious issue involving hard forks.
+The consensus layer makes the decision about whether or not to enact a hard fork based on
+the protocol parameter update state two stability windows before the end of the epoch.
+However, the ledger will reject a protocol parameter update on the epoch boundary
+if the deposit pot adjustments cannot be reconciled with the reseve pot.
+This means that if quorum is met regarding changing the major protocol version,
+but the update is rejected on the epoch boundary, consensus will change the era but the
+ledger will not change the major protocol version, leaving the ledger in a split-brain state.</li></ul><p>Because we never actually changed the values of the two deposits amounts in the protocol parameters
+on mainnet, we were able to retroactively change the behavior.
+We made the following changes:</p><ul><li>Individual deposits are tracked in the <code>DState</code>.</li><li>The amount deposited is always returned.</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-ledger-api">New ledger API<a class="hash-link" href="#new-ledger-api" title="Direct link to heading">​</a></h4><p>We have significantly built up the ledger API.
+We will eventually replace much of the <code>cardano-api</code> in the node repository with this ledger API.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h4><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We have a new declaritive infrastructure for building constraint-based generators,
+which instead generate a random ledger state representative of not just an initial state,
+but also those representative of the end result of a long sequence of valid blocks.
+Moreover, these generators are very fast and are much more random than our old generators.
+Before we can start using them for our existing property tests, however, we still need to
+expand them to generate a valid block for a given ledger state.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><p>We continued to address technical debt as much as we can.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3323" target="_blank" rel="noopener noreferrer">pull-3323</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3338</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a>]</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="critical-fixes">Critical fixes<a class="hash-link" href="#critical-fixes" title="Direct link to heading">​</a></h5><p>We fixed two critical issues:</p><ul><li>Growing block production delay on the epoch boundary: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a>]</li><li>Unexpected node shutdown from <code>balanceR</code>: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li><strong>Conway spec</strong> -
+Complete the first version of the conway formal specification.</li><li><strong>DRep stake distribution</strong> -
+Have the ledger compute the DRep stake distribution with acceptible performance.</li><li><strong>Devnet ready</strong> -
+Have the Haskell implementation of the conway era in sync with the formal specification,
+and integrate the changes with consensus and node.
+All the details might not be finalized, but the wire specification and the API should
+be stable so that conway can be placed on a devnet for tool builders to start integrating with.</li><li><strong>Plutus V3</strong> -
+Integrate Plutus V3 into the ledger, including a new script context which supports DReps.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h3><p>This quarterly report was based off of the following fortnightly ones:</p><ul><li><a href="/cardano-updates/quarterly/2023-01-05-ledger">2023-01-05</a></li><li><a href="/cardano-updates/quarterly/2023-01-19-ledger">2023-01-19</a></li><li><a href="/cardano-updates/quarterly/2023-02-02-ledger">2023-02-02</a></li><li><a href="/cardano-updates/quarterly/2023-02-17-ledger">2023-02-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-03-ledger">2023-03-03</a></li><li><a href="/cardano-updates/quarterly/2023-03-17-ledger">2023-03-17</a></li><li><a href="/cardano-updates/quarterly/2023-03-31-ledger">2023-03-31</a></li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Quarterly Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-18-consensus</link>
+            <guid>2023-01-18-consensus</guid>
+            <pubDate>Wed, 18 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Consensus Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-12---2023-01">2022-12 - 2023-01<a class="hash-link" href="#2022-12---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><p>The prototype is feature complete and thoroughly tested at the consensus level.
+In particular, we invested a lot of time in writing property-test for the
+mempool, and other crucial new parts of the prototype. Now we are ready to run
+integration tests and system-level benchmarks.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><p>We identified and fixed a slowdown in cross-era forecasting that was inhibiting
+our efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%
+speedup in full sync times in the baseline.</p><p>We also started prototyping a self-contained implementation of the Genesis
+dynamics (in particular of the parts intentionally not part of the ChainSync
+Jumping prototype) that furthered our understanding of subtleties and edge
+cases.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We worked on designing integration of new VRF and KES crypto into consensus.<ul><li><code>Crypto</code> class was split into two parts: <code>Crypto</code> and <code>HeaderCrypto</code>.</li><li>With the Ledger team's help, we refactored <code>cardano-ledger</code> to use a proxy
+type for VRF.</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>PR went through its second review round. It is about to be merged, but it got
+delayed due to people's availability during Christmas break.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We improved the capabilities of our <code>io-sim</code> library, which is key for testing
+and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger, which is important
+for reducing memory consumption of the Cardano node.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We added a tutorial on how to instantiate the Consensus layer to run custom
+ledgers. This should be a valuable resource to people looking to roll their
+own custom blockchain (either for commercial or research purposes).</li><li>We added an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Evaluate the extensibility of the prototype. Moving the UTxO to disk is only
+the first step towards reducing the memory requirements of Cardano node, and
+ensuring its long term sustainability. In the future, we plan on moving other
+large maps, such as delegation maps. The prototype should be able to
+accommodate these changes without any major modifications.</li><li>Start the integration with other downstream components, such as the wallet and
+db-sync. The idea is to identify and address any potential pain points that
+might arise during this integration.</li><li>Run integration tests and system-level benchmarks.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Finish benchmarking and tuning the fast-path ChainSync Jumping prototype</li><li>Expand and optimize the self-contained implementation of the Disconnect Rule
+(including density comparisons and the LoE)</li><li>Develop documentation and smoke tests for these components.</li><li>Start modifying the ChainSync Client for the LoP and LoR.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Help the Network team with diagnosing performance regression in block
+production.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Fix property-test failures concerning iterators (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3999" target="_blank" rel="noopener noreferrer">#3999</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>).</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Finish <a href="https://github.com/input-output-hk/ouroboros-network/issues/4145" target="_blank" rel="noopener noreferrer">mapping consensus</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-2">UTxO HD<a class="hash-link" href="#utxo-hd-2" title="Direct link to heading">​</a></h4><ul><li>Moving other parts of the ledger state to disk might require a major redesign
+of the prototype. For instance, if it turns out that the epoch change rules
+require access to the <em>full</em> ledger state. If this is the case, we might
+accept this risk and do the redesign after the initial release of UTxO-HD.</li><li>Integration with downstream clients might require more work than we
+anticipate.</li><li>Access to the benchmarking's team time and resources.</li><li>Benchmarking results might show significant performance degradation, which
+will require additional work if such performance degradation is not accepted
+by other stakeholders.</li><li>The prototype's performance might not be accepted by other stakeholders. Here
+we need to clearly communicate that this is necessary to ensure that as the
+blockchain size grows, the node can operate within reasonable memory
+constraints.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Quarterly Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-13-network</link>
+            <guid>2023-01-13-network</guid>
+            <pubDate>Fri, 13 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>The primary goal of the networking team was to focus on the single relay
+release of P2P.  We fixed a number of small late bugs, and concluded QA
+&amp; performance testing.  Although it was discovered a regression in performance
+of  block production when P2P is enabled, relaying with P2P performs better
+comparing to a non p2p.  We concluded that this is not a blocker for the Single
+Relay Release which is planned shortly.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">Peer sharing</a> has gone through review and final review is
+just being done right now.  After merging it will still be disabled (hidden
+behind a flag) as it's not safe without eclipse evasion.  We started
+implementing light peer sharing (i.e. include inbound peers into known peer set
+of the outbound governor).</p><p>We started a detailed eclipse evasion design, it will continue in the next
+quarter.</p><p>We also made a major revision of package structure of the network packages.  We
+ended up with a very clean dependency graph (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">pr #4155</a>).</p><p>Armando Santos delivered a talk at the <a href="https://sites.uclouvain.be/OPODIS2022/armando-details.html" target="_blank" rel="noopener noreferrer">ODOPIS 2022</a> conference on principles
+of distributed systems in Brussels.  The slides are available <a href="https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Neil Davies gave an invited seminar on <code>DeltaQ</code> at Université Catholique de
+Louvain.</p><p>We also found and fixed a few of bugs:</p><ul><li><p>a bug in keep alive mini-protocol which resulted in warm to cold transitions
+to be always executed through a timeout path rather than do a clean demotion
+(<!-- -->[pr #4168]<!-- -->).</p></li><li><p>fixed an assetion failure in the outbound governor (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>) </p></li></ul><ul><li>we fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will work towards the next release of P2P for block producer nodes.  This includes:</p><ul><li>analysing performance regression for BP nodes when using P2P</li><li>finish the work on controlling the block forger through node kernel (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a>)</li><li>address <a href="https://github.com/input-output-hk/ouroboros-network/issues/3907" target="_blank" rel="noopener noreferrer">issue #3907</a> and write a script to analyse deployment of P2P relays</li></ul><p>We would like also to push forward eclipse evasion.   Although most of the work
+has be done already the release of <code>io-sim</code> on <code>Hackage</code> will happen in the
+next quarter.</p><p>We would also like to address <a href="https://github.com/input-output-hk/ouroboros-network/issues/4244" target="_blank" rel="noopener noreferrer">chain-sync timeout issue</a> recently
+diagnosed by Karl Knutsson.</p><p>If time permits we would also like to address some technical debt, especially:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3387" target="_blank" rel="noopener noreferrer">enable nothunk in diffusion tests</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4085" target="_blank" rel="noopener noreferrer">refactor diffusion testnet simulation</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><p>The performance regression for block producer with P2P needs to be investigated
+in the near future.  This is blocker for the release of P2P on BP nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-ouroboros-network">Contributions to Ouroboros-Network<a class="hash-link" href="#contributions-to-ouroboros-network" title="Direct link to heading">​</a></h4><ul><li>We added <code>TraceDemoteLocalAsynchronous</code>, which enables notification of critical issues for SPOs</li><li>We fixed <code>cardano-ping</code> compatibility with <code>NodeToNodeV_10</code> (P2P, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">pr #4165</a>)</li><li>We fixed a bug in demotion peers to cold which affected P2P nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334" target="_blank" rel="noopener noreferrer">commit-61058aa5c2</a>)</li><li>Karl Knutsson enhanced <code>SendFetchRequest</code> (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47" target="_blank" rel="noopener noreferrer">commit-bb1c3dddee</a>), open-source contribution)</li><li>We turned <code>SizeInBytes</code> into a newtype.</li><li>We extended <code>CONTRIBUTING.md</code>, <code>README.md</code>, added <code>CODE_OF_CONDUCT</code>.</li><li>We fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li><li>We fixed a simulation bug found in <a href="https://github.com/input-output-hk/ouroboros-network/issues/4258" target="_blank" rel="noopener noreferrer">issue #4258</a></li><li>[pr #4168]</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-cardano-node">Contributions to Cardano-Node<a class="hash-link" href="#contributions-to-cardano-node" title="Direct link to heading">​</a></h4><ul><li>We maintained the Single Relay Release <a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">pr #4612</a>, (e.g. fixing CI issues,
+Rebasing it when necessary, publishing packages to Cardano Haskell Packages);</li><li>We enhanced <code>JSON</code> serialisation / deserialisation of <code>NodeToNodeVersion</code> and <code>NodeToClientVersion</code>;</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-iosim">Contributions to IOSim<a class="hash-link" href="#contributions-to-iosim" title="Direct link to heading">​</a></h4><ul><li>We started to use Cardano Haskell Packages for <code>IOSim</code> (<a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pr #48</a>)</li><li>We updated change log files</li><li>We added support of <code>ghc-9.4</code> (<a href="https://github.com/input-output-hk/io-sim/pull/50" target="_blank" rel="noopener noreferrer">pr #50</a>)</li></ul><p>We also addressed the following issues in <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> in order to prepare the package for publication on Hackage:</p><ul><li>refactored <code>io-classes</code> timers API (<a href="https://github.com/input-output-hk/io-sim/issues/46" target="_blank" rel="noopener noreferrer">issue #46</a>);</li><li>created a new package <code>si-timers</code> which exposes an interface using SI units
+and is safe on 32-bit systems (<a href="https://github.com/input-output-hk/io-sim/issues/59" target="_blank" rel="noopener noreferrer">issue #59</a>);</li><li>added monad transformers instances for classes defined in <code>io-classes</code> (<a href="https://github.com/input-output-hk/io-sim/issues/58" target="_blank" rel="noopener noreferrer">issue #58</a>);</li><li>created <code>io-classes-mtl</code> package which includes (experimental) instances for monad transformers;</li><li>provide <code>MonadMonotonicTimeNSec</code> in <code>io-classes</code> and <code>MonadMonotonicTime</code> in <code>si-timers</code> (so that <code>io-classes</code> follow the <code>base</code> package);</li><li>added  <code>registerCancellableDelay</code> in <code>si-timers</code> (which allowed us to hide fancy timer api and clean <code>io-classes</code>)</li><li>added support for <code>js_HOST_ARCH</code> (the new GHC JS backend)</li></ul><p>Note the <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> contains almost 40 commits, and was a major step forward for
+<code>io-sim</code> ecosystem.  We also prepared a draft <a href="https://github.com/input-output-hk/cardano-node/pull/4281" target="_blank" rel="noopener noreferrer">pr #4281</a> which updates
+<code>ouroboros-network</code>.</p><p>Other changes for <code>1.0.0.0</code> release on Hackage:</p><ul><li>Refactored test suite (<a href="https://github.com/input-output-hk/io-sim/pull/47" target="_blank" rel="noopener noreferrer">pr #47</a>)</li><li>Updated documentation, cabal files, <code>CONTRIBUTING</code>, <code>SECURITY</code> documents, etc in <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">pr #60</a>, currently under review.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Open-Source Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2023-01-13-open-source</link>
+            <guid>2023-01-13-open-source</guid>
+            <pubDate>Fri, 13 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Open Source Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-quarterly-update">Open Source Quarterly Update<a class="hash-link" href="#open-source-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>In the last quarter the open-source initiative delivered a comprehensive report
+on the state of our repositories.  As part of this work stream we
+identified the key open-source repositories for the cardano project across all
+the projects  From a list of more than 500 repositories (some of which are
+forks) we identified key repositories which constitute the core of Cardano.
+20 of them were identified as to be transferred to the future MBO which will
+govern Cardano development.  Some where excluded (like <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> and
+<a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a>), to be govern by IOG, since they have a much broader
+application than Cardano itself, and thus we think their open-source future
+will be better outside of the Cardano umbrella.</p><p>Christian Taylor identified a number of ways we can improve our repositories to
+make them more attractive for open-source contributions by analysing each of
+them.  This includes adding or improving various documentation files, like
+<code>CONTRIBUTING</code> files, adding code of conduct, improving readme files, issue
+&amp; pull request templates etc.  Christian also computed various interesting
+metrics which gives a very good insight into the development practices: e.g.
+average merge ratio, average number of reviews, comments and many more!  The
+presentation is available <a href="https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ" target="_blank" rel="noopener noreferrer">here</a>.</p><p>We followed with work on the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  We included
+a standard code of conduct which is now used by most important projects in the
+Cardano space.  We included <code>cardano-node</code>'s security policy and added
+a responsible disclosure policy.  We also described how roles and
+responsibilities should be clarified.  This progress was made by
+a collaborative effort of the Cardano Core, Plutus and Architecture teams, and
+it wouldn't be possible without Michael Peyton Jones, Arnaud Bailly, Kevin
+Hammond, Jared Corduan and Marcin Szamotulski.</p><p>We also improved the documentation of key repositories, by adding description,
+improving their <code>README</code> file &amp; <code>CONTRIBUTING</code> files, adding code of conducts
+following the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  This includes improvements to:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network" target="_blank" rel="noopener noreferrer"><code>ouroboros-network</code></a> (both <code>network</code> &amp; <code>consensus</code>)</li><li><a href="https://github.com/input-output-hk/cardano-ledger" target="_blank" rel="noopener noreferrer"><code>cardano-ledger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-node" target="_blank" rel="noopener noreferrer"><code>cardano-node</code></a></li></ul><p>And also</p><ul><li><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a></li><li><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a></li><li><a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer"><code>cardano-prelude</code></a> (work in progress)</li></ul><p>The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. </p><p>In this quarter we also identified a number of projects which can be published to
+<code>Hackage</code> (Haskell's package repository) or <code>crate</code> (Rust package repository).
+The list contains 21 packages, 2 of which (<a href="https://hackage.haskell.org/package/hedgehog-extras" target="_blank" rel="noopener noreferrer"><code>hedgehog-extras</code></a> and
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>) are already published on Hackage and another 5 (from
+the <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> repository) are close to be published.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><p>The progress of the open-source project is tracked in <a href="https://github.com/orgs/input-output-hk/projects/60/views/1" target="_blank" rel="noopener noreferrer">this project</a>.</p>]]></content:encoded>
+            <category>open-source</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Quarterly Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-15-consensus</link>
+            <guid>2022-11-15-consensus</guid>
+            <pubDate>Tue, 15 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Consensus Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li><p>As a consequence of the errors observed when running distributed mempool
+benchmarks, we re-designed the UTxO HD mempool integration, which fixed these
+errors and lead to a simpler and more maintainable design.</p></li><li><p>We focused on increasing test coverage for the UTxO-HD prototype. In
+particular, we added property tests for:</p><ul><li>Backing store (work ongoing)</li><li>Era transitions</li></ul></li><li><p>The property tests we added uncovered several bugs, which is a great result
+given the exponential increase in the cost of finding bugs as they are closer
+to deployment.</p></li><li><p>One of the errors found by our tests required us to work on improvements in
+the Haskell bindings for LMDB. This work is ongoing.</p></li><li><p>We started working on the mempool property tests that will exercise the new
+code paths that UTxO HD introduced.</p></li><li><p>We developed, benchmarked and tested an implementation of sequences of
+differences based on "anti-diffs". Performance results of diff sequence
+operations show that we achieved a speedup of about <code>4x</code> across several
+scenarios. Note: this speedup is taking into account diff sequence operations
+only, so the consensus-wide speedup is less than <code>4x</code>.</p></li><li><p>We integrated the "anti-diff" prototype into the UTxO HD feature branch.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We wrote a simulator that demonstrates soundness of an abstract implementation
+of the new chain selection rule.</li><li>We elaborated a draft specification for the Genesis implementation (currently
+awaiting feedback from other architects).</li><li>We elaborated a draft specification for the ChainSync Jumping optimization. In
+particular, this includes a proof sketch that the latter preserves liveness
+and safety in all cases.</li><li>With the Networking team, we co-designed the eclipse avoidance mechanism,
+specifically its coherence with the Genesis implementation plan's security
+and its dependence on the new ChainSync Jumping optimization.</li><li>We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a
+performance degradation wrt the baseline. Our optimization attempts so far
+have brought the performance closer to the baseline, but not yet to parity.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We did most of the heavy lifting required to integrate the Conway era into the
+Consensus layer.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We started working on enabling CI nightly tests, which revealed several test
+failures due to thunks being found it data structures used by the ledger and
+consensus. We made a lot of progress fixing those thunk errors, but some
+errors still remain.</p></li><li><p>We elaborated a <code>db-analyser</code> benchmark for the ledger operations. This led us
+to the identification of high processing time at epoch boundaries, and we
+could not observe any performance degradation that can be attributed to era
+changes.</p></li><li><p>We fixed a source of flakiness in the ChainDB QSM test.</p></li><li><p>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</p></li><li><p>We fixed a bug in the maximum-allowed ledger major protocol version.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We spent time making <code>cardano-updates</code> the central source of information for
+the core teams stakeholders.</li><li>We went through the Galois gap analysis and extracted actionable points to
+take on next.</li><li>Bart and Yogesh continued with their onboarding and stated making substantial
+contributions to consensus.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Finish the mempool property tests.</li><li>Benchmark the latest version of the prototype.</li><li>Elaborate a document that describes new integration test scenarios and pass it
+to the SDET team.</li><li>Bring query UTxO by address command performance on par with the baseline
+version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Receive and incorporate Duncan's feedback on the first draft specification for
+the Genesis implementation.</li><li>Begin prototyping the first genesis implementation, unless the first draft
+needs major changes.</li><li>Draft a second revision of the Genesis report.</li><li>Review the second revision with a wider audience, which includes at least
+Alexander Russell. That feedback will drive a third and hopefully final
+revision.</li><li>Investigate how to mitigate the ~30% slowdown we have observed so far in the
+ChainSync jumping prototype, and try to mitigate it. In particular, we might
+need to optimize the existing BlockFetch logic.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Enabling nightly CI tests.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Merge the tutorial document Galois wrote; requires CI integration.</li><li>Come up with our own documentation improvements, many of which were suggested
+in the Galois gap analysis.</li><li>Try to hire a new team member.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-09-network</link>
+            <guid>2022-11-09-network</guid>
+            <pubDate>Wed, 09 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-most-important-improvements">Summary of most important improvements<a class="hash-link" href="#summary-of-most-important-improvements" title="Direct link to heading">​</a></h3><p>During this quarter the networking team delivered low level specification of
+peer sharing &amp; eclipse evasion.  We held a session with the consensus &amp; the
+scientists; we got a positive feedback on the design.</p><p>Further we focused on implementation of peer sharing.  We produced a <a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">detail
+design</a> and an <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">early implementation</a>.</p><p>We prepared the <em>P2P Single Relay Release</em> (<code>cardano-node-1.35.5</code>).  It
+includes over <a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">130 patches</a> of network stack improvements over the
+previous version <code>1.35.4</code>, which were accomplished over a longer period of
+time.  Among them are both bug fixes and UX improvements for stake pool
+operators like simplified format of the <a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">topology file</a>, or
+improvements in the logged messages:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">tracing of early consensus exceptions</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">tracing of demotion of local root peers</a> (traced with
+<code>Warning</code> severity), the trace is called <code>TraceDemoteLocalAsynchronous</code>, in
+<code>json</code> format it is encoded as <code>DemoteLocalAsynchronous</code>.  For an SPO
+tracking these demotion is vital (such demotion could indicate that a block
+producer is no longer connected to its relays or vice versa)</li></ul><p>We also provide better integration with <a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">systemd</a> (socket
+activation improvements) or improvements in the networking stack:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3785" target="_blank" rel="noopener noreferrer">exit policies</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3915" target="_blank" rel="noopener noreferrer">peer metrics improvements</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">DNS TTL</a> improvements (which make it harder to misconfigure the
+system, an issue discovered by the performance &amp; monitoring team),</li><li>do not trigger inbound idle timeout for <code>node-to-client</code> connections (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3844" target="_blank" rel="noopener noreferrer">pr
+#3844</a>), an issue reported to us by Matthias Benkort from
+Cardano Foundation.</li></ul><p>Duncan has been making progress with the input endorsers demo. His simulation
+provides a useful animated visualisation and live quantification of behaviour
+of the modeled design.</p><p>We also improved our e2e diffusion simulation by implementing header-body
+split, similar to what the real implementation does.</p><p>We also made some advances towards our future goals of P2P release for block
+producer nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a> - in review) &amp; for Daedalus users
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3968" target="_blank" rel="noopener noreferrer">pr #3690</a> - merged).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><ul><li><p>We expanded diffusion simulation with block-fetch protocol bringing it closer
+to the production system.</p></li><li><p>We addressed some additional technical depth in diffusion simulation</p></li><li><p>We slightly improved documentation &amp; CI of io-sim and typed-protocols
+repositories for open-source contributors.</p></li><li><p>We closed a number of issues towards publishing io-sim on Hackage (only two
+essential issues are left open).</p></li><li><p>We pushed a branch of typed-protocols which captures one of the developer UX
+problems in the API which we need to solve.</p></li><li><p>We identified and fixed an issue related to systemd sockets.</p></li><li><p>We identified and fixed an issue in consensus initialisation not giving
+feedback on early errors.</p></li><li><p>We deployed RT View, identified a number of issues which were communicated to
+the performance &amp; monitoring team.</p></li><li><p>We finished high level &amp; detailed design of peer sharing, very early
+implementation of peer sharing is done (note that peer sharing cannot be
+safely deployed without eclipse evasion &amp; genesis).</p></li><li><p>We finished high level design of eclipse evasion, and started working on
+a detailed design.</p></li><li><p>We were assigned the role of release engineer for 1.35.5 release (the P2P
+single relay release); we prepared a cardano-node for 1.35.5 release which
+contains more than 130 patches of just network stack improvements done over
+last few months.</p></li><li><p>We diagnosed and fixed an tricky bug in the peer state actions (a component
+which sits between outbound governor and connection manager). That bug was
+introduced earlier this year and never released. It was caught by the QA
+testing framework. We expanded our diffusion simulation to cover such case and
+also mitigated a chance for reintroducing such a bug in future.</p></li><li><p>We identified and quite likely mitigated a misconfiguration in the
+benchmarking cluster (next benchmarking run will confirm our hypothesis).</p></li><li><p>We simplified the format of p2p topology file, we got positive feedback from
+SPOs.</p></li><li><p>We raised severities of some of the logging messages, which is an important
+improvement for SPOs, exchanges and other users of the system.</p></li><li><p>We worked on input endorsers simulation which gives both animated and
+quantified live feedback on network operation, using a simplified model of
+a TCP/IP network. </p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-quarter">Next quarter<a class="hash-link" href="#next-quarter" title="Direct link to heading">​</a></h2><ul><li><p>Release the Single Relay P2P Release <code>1.35.5</code>.</p></li><li><p>Carry on with Peer Sharing (review, testing).</p></li><li><p>Deliver a talk at <a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">Conference on Principles of Distributed Systems 2022</a> in Brussels, Belgium.</p></li><li><p>Present Detailed Design of Eclipse Evasion and start implementation phase.</p></li><li><p>Work on P2P Block Producer release.</p></li><li><p>Carry on with publishing of <code>io-sim</code> on <code>Hackage</code>.</p></li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2022-11-07-ledger</link>
+            <guid>2022-11-07-ledger</guid>
+            <pubDate>Mon, 07 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Ledger Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>We finished a minimal ledger era capable of master key rotation.
+This will be re-purposed our upcoming work.</li><li>We have the humble beginnings of a proper ledger API.</li><li>We improved the problematic cost model serialization
+(recall the song and dance about updating the cost model one epoch after the hard fork).</li><li>We have added benchmarks for problematic areas.</li><li>Massive repository restructure and cleanup.<ul><li>Unified and consistent variable name schemes (not completely finished, but nearly there).</li><li>Massive reduction in type constraints, which causes a lot of developer friction,
+in our code and also downstream.</li><li>More organized module structures.</li><li>Improved generators for our property tests.</li><li>We removed our dependency on cardano-prelude.</li></ul></li><li>The formal ledger model has come a long way.<ul><li>We created a fork of Agda that provides some meta-programming support for the ledger rules.</li><li>We have a large amount of the basic UTxO support in the model.</li><li>We can generate a good looking PDF from the model.</li><li>We can produce Haskell from the model.</li><li>We have a nice finite set theory library that we can use for many of the ledger rules.</li><li>We have nix support for the model.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h2><ul><li>Individual tracking of deposits. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>]</li><li>Versioned CBOR encoders/decoders. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>]</li><li>New ledger era transaction body (and the surround work associated with it).</li><li>Designs for the next ledger era.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/quarterly/2022-10-07-node-cli-api</link>
+            <guid>2022-10-07-node-cli-api</guid>
+            <pubDate>Mon, 07 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Node-Api-Cli Quarterly Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-quarterly-update">Node-Api-Cli Quarterly Update<a class="hash-link" href="#node-api-cli-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0</li><li>Major clean up of stale iusses + PRs.</li><li>Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs</li><li>cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.</li><li>cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.</li><li>General documentation updates and improvements</li><li>Addition of tx-mempool command which allows users to:<ul><li>Query the node about the current mempool's capacity and sizes</li><li>Request the next transaction from the mempool's current list</li><li>Query if a particular transaction exists in the mempool</li></ul></li><li>Initial refactoring of cardano-testnet</li></ul><p>Next quarter</p><ul><li>cardano-api<ul><li>Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.</li></ul></li><li>cardano-testnet<ul><li>Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - <a href="https://github.com/input-output-hk/cardano-node/issues/4598" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/issues/4598</a></li></ul></li><li>Serenity<ul><li>Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.</li></ul></li><li>General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new.</li></ul>]]></content:encoded>
+            <category>cli-api-quarterly</category>
+        </item>
+    </channel>
+</rss>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;cli-api-quarterly&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-10-07-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-quarterly-update">Node-Api-Cli Quarterly Update<a class="hash-link" href="#node-api-cli-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>Various improvements to tests/CI/GHC 9.2.4 preparations/upgrade to cabal-3.8.1.0</li><li>Major clean up of stale iusses + PRs.</li><li>Implementation of stale-bot to mitigate against a proliferation of outdated issues and PRs</li><li>cardano-api refactoring with the aim of exposing more user friendly functions, particularly concerning transaction construction and querying the node.</li><li>cardano-cli refactoring with the aim of moving reusable functions to cardano-api. We have made strides here and have managed to improve the interface of transaction construction and validation.</li><li>General documentation updates and improvements</li><li>Addition of tx-mempool command which allows users to:<ul><li>Query the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul></li><li>Initial refactoring of cardano-testnet</li></ul><p>Next quarter</p><ul><li>cardano-api<ul><li>Working with Konstantinos and his team to make cardano-api better for dapp developers - we have a google doc for this, I can send it to you privately.</li></ul></li><li>cardano-testnet<ul><li>Working with Marc Fontaine to create an easy to use executable to deploy testnets locally - <a href="https://github.com/input-output-hk/cardano-node/issues/4598" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/issues/4598</a></li></ul></li><li>Serenity<ul><li>Continued refactoring of cardano-api and cardano-cli, with the particular focus on extracting re-usable components of cardano-cli and moving them to cardano-api. This is harder to define but will manifest in stuff moving from cardano-cli to cardano-api and is tied in to the cardano-api work specified above.</li></ul></li><li>General bug fixing and smaller feature requests for the api/cli that are always coming in. Robert is primarily handling this at the moment as he is relatively new.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/cli-api-quarterly">cli-api-quarterly</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>4 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-consensus">Consensus Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04----2023-06">2023-04 -- 2023-06<a class="hash-link" href="#2023-04----2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished a major prototype refactoring, which includes:<ul><li>A better and finer grained DB lock mechanism.</li><li>Elimination of race conditions.</li><li>Support for configuring batch query size and flushing rate. This is crucial to allow node users to tweak performance.</li><li>Architectural simplifications and performance improvements.</li></ul></li><li>We implemented a new package to support db-sync integration with UTxO-HD.</li><li>We ran another set of ad-hoc benchmarks:<ul><li>We uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>.</li><li>The synchronization and replay speed are as expected.</li><li>However, we uncovered memory consumption issues (see figure below).<ul><li>The in-memory backend is consuming more memory than the baseline.</li><li>The LMDB backend shows an unexpected memory usage peak.</li><li>Investigation on these issues is ongoing.</li></ul></li></ul></li><li>We integrated the latest changes in <code>main</code> branch.<ul><li>This required a re-design of the mempool to include the mempool fairness
+improvement.</li></ul></li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-utxo-hd-sync-ad-hoc-benchmarks-74f9d76c2602f09652f584cc4d6a0962.png" width="2500" height="1700" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>The Genesis work for this PI focused on an high-priority issue from the IOG Researchers&#x27; feedback on the proposal.<ul><li>This particular question was not anticipated when the Q2 PI was planned.</li><li>As a result, the chain generators work, the ChainSync Jumping performance work, and the Genesis node prototype work were deprioritized.</li><li>That work has accordingly been rolled over into the Statement of Work for the first Genesis vendor work package.</li></ul></li><li>The IOG Researchers&#x27; feedback on the design was very valuable. It had two primary effects.</li><li>Outcome 1: We re-introduced distinct behaviors when the node is &quot;syncing&quot; versus when it is &quot;caught up&quot;.<ul><li>This eliminated a DoS vector introduced by the proposal, instead of having to argue that it was well-mitigated.</li><li>The additional design complexity is relatively small.</li></ul></li><li>Outcome 2: The issue that was unanticipated is whether the Cardano chain is consistently dense enough to rely on Genesis without any checkpointing.<ul><li>The determination so far is that---assuming the adversary never controls more than four of the seven genesis keys---the most vulnerable segment is in the pure Praos era.</li><li>All the preceding windows are significantly more robust, including the entire Byron and Transitional Praos eras.</li><li>Thus checkpointing is not necessary for the initial Genesis release, though it still may be a reasonable addition later.</li><li>The primary invention was a model for bounding how much benefit the adversary&#x27;s long-range attack could possibly gain from Praos&#x27;s natural short forks.</li></ul></li><li>Relevant questions that the IOG Researchers are still assessing.<ul><li>These do not block the Genesis implementation, but do affect the ultimate values of specific parameters.</li><li>Question 1: what is the upper bound on the duration of an eclipse that a healthy Praos node will survive?</li><li>Question 2: what is the upper bound on how much grinding can improve the adversary&#x27;s leader schedule within some Genesis window?</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We performed an analysis on number of file descriptors used by Consensus, this
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough, thus improving the user (eg node
+operator) experience.</li><li>We implemented a mempool fairness improvement, by which transactions are
+guaranteed to be processed irrespective of their size.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in followers logic, which was discovered by our <code>QuickCheck</code>
+property tests.</li><li>We created an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB
+server</a>. This tool allows to serve blocks from the immutable DB to a node that connects to it. This has a remarkable value for testing and benchmarking purposes. For instance, by using this component, we can benchmark the performance of different aspects of Consensus, such as syncing from scratch, without adding Network interference in the performance results.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> tool, which can be used in disaster recovery and benchmarking scenarios.</li><li>We created a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/161" target="_blank" rel="noopener noreferrer">benchmarks comparison tool</a> that we plan on using for comparing the performance of two Consensus releases. This will allow us to catch performance regressions early on in the process, before they make it to the node (and show in the system level benchmark tests), thus greatly saving development costs. As an example, the graph below shows the performance <em>improvements</em> introduced by the Ledger team in version <code>0.6.0.0</code> of Consensus wrt version <code>0.5.0.0</code>.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/2023-Q2-beacon-graph-ded65e814bfe6d927faa1c5c66bbbfad.png" width="1840" height="1372" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released <code>fs-sim</code> as open-source repository. This lowers the barrier to entry for external contributors, which will indirectly benefit the Cardano project.</li><li>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new repository</a>, splitting
+it from the <code>ouroboros-network</code> repository. This will save development effort for both the Network and the Consensus teams, since there will be less interference (for instance when making releases).</li><li>We made several improvements to our release processes, which will translate in time savings. As an example, we went from 16 to 4 packages, which makes the release process simpler and smother. Our release process now makes it easier to align versions and make releases (both for us and for our downstream users).</li><li>We added an explanation of the hardfork-combinator forecast horizon, that will benefit not only our team, but future external contributors.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>We will <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">get UTxO-HD ready for handover</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>We will regularly liaise with the vendor(s) satisfying the Genesis Statement(s) of Work.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-25-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-25T00:00:00.000Z" itemprop="datePublished">April 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li>We finished the testing activities for the prototype, which involved adding
+new tests, and fixing and enabling temporarily disabled tests.</li><li>We spent a substantial amount of effort refactoring and cleaning the
+prototype.</li><li>We audited the UTxO HD prototype to make sure it can accommodate the migration
+of other tables (eg stake-keys registration) from memory to disk. The result
+of the audit was positive.</li><li>We ran ad-hoc benchmarks for reading keys and flushing values to disk. No
+unexpected costs found.</li><li>We ran the first system level benchmarks. The performance regressions reported
+were due to an unrealistic snapshotting rate. We need to re-run them again
+after we design a more fine grained locking mechanism.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We elaborated a roadmap of the remaining work for Genesis.</li><li>We presented the design to the IOG Researchers and PNSol on February 20. The
+design was well received. We updated the Genesis design with the researcher&#x27;s
+feedback.<ul><li>We plugged the new DoS vector identified during the aforementioned
+presentation.</li></ul></li><li>We developed a generator for adversarial leader schedules that satisfy key
+Ouroboros properties, which will be used to test the Genesis design.<ul><li>The generator enables use of smaller Ouroboros parameters, which makes
+extrema more likely and counterxamples easier interpret.</li></ul></li><li>We wrote up the latest design iteration.</li><li>We continued benchmarking the Chain Sync Jumping prototype. In particular:<ul><li>We debugged the prototype&#x27;s performance regression, and unmasked the
+actual cause by patching our initial theory (bad queuing behavior)</li><li>We identified and validated the actual cause (a pathological case in
+BlockFetch tiebreaker).</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We created two new tools. One for dumping CBOR encoded blocks to JSON. Ahother
+to serve a local immutable DB.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We integrated the Conway era into consensus.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug with followers, which was discovered by property tests.</li><li>We developed a DSL for specifying and running ChainDB test cases.</li><li>We fixed failing tests with iterators.</li><li>We created micro-benchmarks for adding transactions to the mempool.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We released a new technical documentation site for consensus.</li><li>We factored out several packages to external repositories. Some of this work
+originated in the UTxO HD workstream.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/28" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/28</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/33" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/33</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/32" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/32</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/issues/31" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-consensus/issues/31</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Design Consensus side of hardfork-enactment in the Voltaire phase
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4180" target="_blank" rel="noopener noreferrer">#4180</a>).</li><li>Estimate the number of file descriptors Consensus needs
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/20" target="_blank" rel="noopener noreferrer">#20</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Identify Quantitative Timeliness Agreements (QTAs) metrics that we can define
+for consensus. Pick one and implement benchmarks for it.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Onboard a new team member.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-18-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-18T00:00:00.000Z" itemprop="datePublished">January 18, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-12---2023-01">2022-12 - 2023-01<a class="hash-link" href="#2022-12---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><p>The prototype is feature complete and thoroughly tested at the consensus level.
+In particular, we invested a lot of time in writing property-test for the
+mempool, and other crucial new parts of the prototype. Now we are ready to run
+integration tests and system-level benchmarks.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><p>We identified and fixed a slowdown in cross-era forecasting that was inhibiting
+our efforts to benchmark the ChainSync Jumping prototype. This resulted in a 7%
+speedup in full sync times in the baseline.</p><p>We also started prototyping a self-contained implementation of the Genesis
+dynamics (in particular of the parts intentionally not part of the ChainSync
+Jumping prototype) that furthered our understanding of subtleties and edge
+cases.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h4><ul><li>We worked on designing integration of new VRF and KES crypto into consensus.<ul><li><code>Crypto</code> class was split into two parts: <code>Crypto</code> and <code>HeaderCrypto</code>.</li><li>With the Ledger team&#x27;s help, we refactored <code>cardano-ledger</code> to use a proxy
+type for VRF.</li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>PR went through its second review round. It is about to be merged, but it got
+delayed due to people&#x27;s availability during Christmas break.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li>We improved the capabilities of our <code>io-sim</code> library, which is key for testing
+and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger, which is important
+for reducing memory consumption of the Cardano node.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We added a tutorial on how to instantiate the Consensus layer to run custom
+ledgers. This should be a valuable resource to people looking to roll their
+own custom blockchain (either for commercial or research purposes).</li><li>We added an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Evaluate the extensibility of the prototype. Moving the UTxO to disk is only
+the first step towards reducing the memory requirements of Cardano node, and
+ensuring its long term sustainability. In the future, we plan on moving other
+large maps, such as delegation maps. The prototype should be able to
+accommodate these changes without any major modifications.</li><li>Start the integration with other downstream components, such as the wallet and
+db-sync. The idea is to identify and address any potential pain points that
+might arise during this integration.</li><li>Run integration tests and system-level benchmarks.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Finish benchmarking and tuning the fast-path ChainSync Jumping prototype</li><li>Expand and optimize the self-contained implementation of the Disconnect Rule
+(including density comparisons and the LoE)</li><li>Develop documentation and smoke tests for these components.</li><li>Start modifying the ChainSync Client for the LoP and LoR.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="support-1">Support<a class="hash-link" href="#support-1" title="Direct link to heading">​</a></h4><ul><li>Help the Network team with diagnosing performance regression in block
+production.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Fix property-test failures concerning iterators (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3999" target="_blank" rel="noopener noreferrer">#3999</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>).</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Finish <a href="https://github.com/input-output-hk/ouroboros-network/issues/4145" target="_blank" rel="noopener noreferrer">mapping consensus</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-2">UTxO HD<a class="hash-link" href="#utxo-hd-2" title="Direct link to heading">​</a></h4><ul><li>Moving other parts of the ledger state to disk might require a major redesign
+of the prototype. For instance, if it turns out that the epoch change rules
+require access to the <em>full</em> ledger state. If this is the case, we might
+accept this risk and do the redesign after the initial release of UTxO-HD.</li><li>Integration with downstream clients might require more work than we
+anticipate.</li><li>Access to the benchmarking&#x27;s team time and resources.</li><li>Benchmarking results might show significant performance degradation, which
+will require additional work if such performance degradation is not accepted
+by other stakeholders.</li><li>The prototype&#x27;s performance might not be accepted by other stakeholders. Here
+we need to clearly communicate that this is necessary to ensure that as the
+blockchain size grows, the node can operate within reasonable memory
+constraints.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-15-consensus">Consensus Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-quarterly-update">Consensus Quarterly Update<a class="hash-link" href="#consensus-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h4><ul><li><p>As a consequence of the errors observed when running distributed mempool
+benchmarks, we re-designed the UTxO HD mempool integration, which fixed these
+errors and lead to a simpler and more maintainable design.</p></li><li><p>We focused on increasing test coverage for the UTxO-HD prototype. In
+particular, we added property tests for:</p><ul><li>Backing store (work ongoing)</li><li>Era transitions</li></ul></li><li><p>The property tests we added uncovered several bugs, which is a great result
+given the exponential increase in the cost of finding bugs as they are closer
+to deployment.</p></li><li><p>One of the errors found by our tests required us to work on improvements in
+the Haskell bindings for LMDB. This work is ongoing.</p></li><li><p>We started working on the mempool property tests that will exercise the new
+code paths that UTxO HD introduced.</p></li><li><p>We developed, benchmarked and tested an implementation of sequences of
+differences based on &quot;anti-diffs&quot;. Performance results of diff sequence
+operations show that we achieved a speedup of about <code>4x</code> across several
+scenarios. Note: this speedup is taking into account diff sequence operations
+only, so the consensus-wide speedup is less than <code>4x</code>.</p></li><li><p>We integrated the &quot;anti-diff&quot; prototype into the UTxO HD feature branch.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h4><ul><li>We wrote a simulator that demonstrates soundness of an abstract implementation
+of the new chain selection rule.</li><li>We elaborated a draft specification for the Genesis implementation (currently
+awaiting feedback from other architects).</li><li>We elaborated a draft specification for the ChainSync Jumping optimization. In
+particular, this includes a proof sketch that the latter preserves liveness
+and safety in all cases.</li><li>With the Networking team, we co-designed the eclipse avoidance mechanism,
+specifically its coherence with the Genesis implementation plan&#x27;s security
+and its dependence on the new ChainSync Jumping optimization.</li><li>We implemented a prototype for ChainSync Jumping. Initial benchmarks showed a
+performance degradation wrt the baseline. Our optimization attempts so far
+have brought the performance closer to the baseline, but not yet to parity.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h4><ul><li>We did most of the heavy lifting required to integrate the Conway era into the
+Consensus layer.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We started working on enabling CI nightly tests, which revealed several test
+failures due to thunks being found it data structures used by the ledger and
+consensus. We made a lot of progress fixing those thunk errors, but some
+errors still remain.</p></li><li><p>We elaborated a <code>db-analyser</code> benchmark for the ledger operations. This led us
+to the identification of high processing time at epoch boundaries, and we
+could not observe any performance degradation that can be attributed to era
+changes.</p></li><li><p>We fixed a source of flakiness in the ChainDB QSM test.</p></li><li><p>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</p></li><li><p>We fixed a bug in the maximum-allowed ledger major protocol version.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h4><ul><li>We spent time making <code>cardano-updates</code> the central source of information for
+the core teams stakeholders.</li><li>We went through the Galois gap analysis and extracted actionable points to
+take on next.</li><li>Bart and Yogesh continued with their onboarding and stated making substantial
+contributions to consensus.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-1">UTxO HD<a class="hash-link" href="#utxo-hd-1" title="Direct link to heading">​</a></h4><ul><li>Finish the mempool property tests.</li><li>Benchmark the latest version of the prototype.</li><li>Elaborate a document that describes new integration test scenarios and pass it
+to the SDET team.</li><li>Bring query UTxO by address command performance on par with the baseline
+version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-1">Genesis<a class="hash-link" href="#genesis-1" title="Direct link to heading">​</a></h4><ul><li>Receive and incorporate Duncan&#x27;s feedback on the first draft specification for
+the Genesis implementation.</li><li>Begin prototyping the first genesis implementation, unless the first draft
+needs major changes.</li><li>Draft a second revision of the Genesis report.</li><li>Review the second revision with a wider audience, which includes at least
+Alexander Russell. That feedback will drive a third and hopefully final
+revision.</li><li>Investigate how to mitigate the ~30% slowdown we have observed so far in the
+ChainSync jumping prototype, and try to mitigate it. In particular, we might
+need to optimize the existing BlockFetch logic.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h4><ul><li>Enabling nightly CI tests.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration-1">Fostering collaboration<a class="hash-link" href="#fostering-collaboration-1" title="Direct link to heading">​</a></h4><ul><li>Merge the tutorial document Galois wrote; requires CI integration.</li><li>Come up with our own documentation improvements, many of which were suggested
+in the Galois gap analysis.</li><li>Try to hire a new team member.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>2 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-03-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-03T00:00:00.000Z" itemprop="datePublished">April 3, 2023</time> · <!-- -->7 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cips">CIPs<a class="hash-link" href="#cips" title="Direct link to heading">​</a></h4><ul><li><strong>Entering the Voltaire phase</strong> -
+CIP-1694 received a major update after participation in the design has expanded to
+more and more people, including those who attended the Colorado workshop.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>.</li><li><strong>Ledger CIP category</strong> -
+The ledger team continues to embrace the CIP process, and has begun the process of
+registering the ledger as an official CIP category.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP-84</a>.</li><li><strong>Ledger serialization</strong> -
+A CIP for the ledger serialization deprecation cycle has been accepted.
+See <a href="https://github.com/cardano-foundation/CIPs/tree/master/CIP-0080" target="_blank" rel="noopener noreferrer">CIP-80</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="formal-ledger-model">Formal ledger model<a class="hash-link" href="#formal-ledger-model" title="Direct link to heading">​</a></h4><p>Our new formal specifications backed by Agda have seen a lot of progress.
+The majority of the ideas in CIP-1694 are now present, and we have made enough progress
+that we can now safely say that the PDF produced by the Agda model will be the
+official ledger specification for the Conway ledger era.
+See <a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">the repository</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h4><p>Progress on the Haskell implementation of CIP-1694 has gone hand in hand with the formal model.
+The major component still missing is the DRep stake distribution, which still presents some
+technical challenges.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="drep-stake-distribution-computation">DRep stake distribution computation<a class="hash-link" href="#drep-stake-distribution-computation" title="Direct link to heading">​</a></h4><p>Adding another large stake distribution to the ledger state must proceed with caution.
+We do not want the memory used by the node to increase too much,
+and performance problems can lead to reduced block production.
+We have prototyped, tested, and benchmarked several approaches that could give us
+the current DRep stake distribution at each epoch boundary.
+This has very important implications, since we want every ADA holder to be able to at any
+time (such as during a contentious vote) register themselves as a DRep and still have time
+to vote themselves on the issue.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h4><p>The ledger has made some wonderful improvements over the past six months,
+but which entail a significant amount of integration efforts:</p><ul><li>Our new versioned CBOR schemes</li><li>Individual deposit tracking</li><li>An improved cross-era interface utilizing lenses</li><li>A new ledger API</li><li>Re-arranging the ledger stake in preparation for CIP-1694</li><li>Versioning our Haskell packages
+using <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaPs</a>.</li><li>Consistent conventions for variable names</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a>]
+[<a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/378" target="_blank" rel="noopener noreferrer">pull-378</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/376" target="_blank" rel="noopener noreferrer">pull-376</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/373" target="_blank" rel="noopener noreferrer">pull-373</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/370" target="_blank" rel="noopener noreferrer">pull-370</a>]
+[<a href="https://github.com/input-output-hk/cardano-base/pull/361" target="_blank" rel="noopener noreferrer">pull-361</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/4976" target="_blank" rel="noopener noreferrer">pull-4976</a>]
+[<a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">pull-5013</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h4><p>Individual deposits (for stake credential and stake pool registrations) were not tracked by the ledger.
+Deposits were returned according to the current protocol parameters.
+When the values of these two protocol parameters change, the deposit pot
+is adjusted by adding to, or removing from, the reserves.</p><p>This has several problems:</p><ul><li>Most people expect a deposit to be paid back exactly.</li><li>We cannot increase the deposit amount once the reserves hits zero.</li><li>If it becomes known that the deposit amount is going to be increased, free Lovelace can be earned by registering credentials.</li><li>Because of the problems above, it is going to be incredibly hard to ever change the values.</li><li>There is a serious issue involving hard forks.
+The consensus layer makes the decision about whether or not to enact a hard fork based on
+the protocol parameter update state two stability windows before the end of the epoch.
+However, the ledger will reject a protocol parameter update on the epoch boundary
+if the deposit pot adjustments cannot be reconciled with the reseve pot.
+This means that if quorum is met regarding changing the major protocol version,
+but the update is rejected on the epoch boundary, consensus will change the era but the
+ledger will not change the major protocol version, leaving the ledger in a split-brain state.</li></ul><p>Because we never actually changed the values of the two deposits amounts in the protocol parameters
+on mainnet, we were able to retroactively change the behavior.
+We made the following changes:</p><ul><li>Individual deposits are tracked in the <code>DState</code>.</li><li>The amount deposited is always returned.</li></ul><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-ledger-api">New ledger API<a class="hash-link" href="#new-ledger-api" title="Direct link to heading">​</a></h4><p>We have significantly built up the ledger API.
+We will eventually replace much of the <code>cardano-api</code> in the node repository with this ledger API.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h4><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We have a new declaritive infrastructure for building constraint-based generators,
+which instead generate a random ledger state representative of not just an initial state,
+but also those representative of the end result of a long sequence of valid blocks.
+Moreover, these generators are very fast and are much more random than our old generators.
+Before we can start using them for our existing property tests, however, we still need to
+expand them to generate a valid block for a given ledger state.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><p>We continued to address technical debt as much as we can.</p><p>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3323" target="_blank" rel="noopener noreferrer">pull-3323</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3338</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a>]
+[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a>]</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="critical-fixes">Critical fixes<a class="hash-link" href="#critical-fixes" title="Direct link to heading">​</a></h5><p>We fixed two critical issues:</p><ul><li>Growing block production delay on the epoch boundary: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a>]</li><li>Unexpected node shutdown from <code>balanceR</code>: [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li><strong>Conway spec</strong> -
+Complete the first version of the conway formal specification.</li><li><strong>DRep stake distribution</strong> -
+Have the ledger compute the DRep stake distribution with acceptible performance.</li><li><strong>Devnet ready</strong> -
+Have the Haskell implementation of the conway era in sync with the formal specification,
+and integrate the changes with consensus and node.
+All the details might not be finalized, but the wire specification and the API should
+be stable so that conway can be placed on a devnet for tool builders to start integrating with.</li><li><strong>Plutus V3</strong> -
+Integrate Plutus V3 into the ledger, including a new script context which supports DReps.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h3><p>This quarterly report was based off of the following fortnightly ones:</p><ul><li><a href="/cardano-updates/quarterly/tags/2023-01-05-ledger">2023-01-05</a></li><li><a href="/cardano-updates/quarterly/tags/2023-01-19-ledger">2023-01-19</a></li><li><a href="/cardano-updates/quarterly/tags/2023-02-02-ledger">2023-02-02</a></li><li><a href="/cardano-updates/quarterly/tags/2023-02-17-ledger">2023-02-17</a></li><li><a href="/cardano-updates/quarterly/tags/2023-03-03-ledger">2023-03-03</a></li><li><a href="/cardano-updates/quarterly/tags/2023-03-17-ledger">2023-03-17</a></li><li><a href="/cardano-updates/quarterly/tags/2023-03-31-ledger">2023-03-31</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-07-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-07T00:00:00.000Z" itemprop="datePublished">November 7, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-quarterly-update">Ledger Quarterly Update<a class="hash-link" href="#ledger-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11-04">2022-09 - 2022-11-04<a class="hash-link" href="#2022-09---2022-11-04" title="Direct link to heading">​</a></h2><ul><li>We finished a minimal ledger era capable of master key rotation.
+This will be re-purposed our upcoming work.</li><li>We have the humble beginnings of a proper ledger API.</li><li>We improved the problematic cost model serialization
+(recall the song and dance about updating the cost model one epoch after the hard fork).</li><li>We have added benchmarks for problematic areas.</li><li>Massive repository restructure and cleanup.<ul><li>Unified and consistent variable name schemes (not completely finished, but nearly there).</li><li>Massive reduction in type constraints, which causes a lot of developer friction,
+in our code and also downstream.</li><li>More organized module structures.</li><li>Improved generators for our property tests.</li><li>We removed our dependency on cardano-prelude.</li></ul></li><li>The formal ledger model has come a long way.<ul><li>We created a fork of Agda that provides some meta-programming support for the ledger rules.</li><li>We have a large amount of the basic UTxO support in the model.</li><li>We can generate a good looking PDF from the model.</li><li>We can produce Haskell from the model.</li><li>We have a nice finite set theory library that we can use for many of the ledger rules.</li><li>We have nix support for the model.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h2><ul><li>Individual tracking of deposits. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>]</li><li>Versioned CBOR encoders/decoders. [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>]</li><li>New ledger era transaction body (and the surround work associated with it).</li><li>Designs for the next ledger era.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>4 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-network">Network Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised the design of eclipse evasion and implemented its mechanism which
+relays on connectivity to <em>big ledger peers</em>.  <em>Big ledger peers</em> are the
+largest ledger peers which accumulate 90% of stake (currently there are less
+than 1000 of them).  The outbound governor has new targets for <em>known</em>,
+<em>established</em> and <em>active</em> big ledger peers which work in a similar way that
+such targets work for ledger peers.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4662" target="_blank" rel="noopener noreferrer">ouroboros-network#4662</a> PR is
+currently in review.</p><p>As part of this work we also identified a bug which would prevent a node to
+connect to itself.  Such connections are not easily detectable and are expected
+to be dropped by the churn mechanism, nonetheless they should not be buggy.
+The failure was discovered thanks to our e2e simulation of diffusion using
+<code>io-sim</code> &amp; property based testing.</p><p>The PR also refactors the heart of the <code>ouroboros-network</code> interface reducing
+technical debt that would otherwise accumulate.</p><p>We also identified a possible improvement in the churn mechanism, which will be
+implemented in Q3.  Churn needs to await for peers to terminate, we can
+improve the synchronisation. <!-- -->[ouroboros-network#4617]</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ecosystem-p2p-deployment-progress">Ecosystem P2P Deployment Progress<a class="hash-link" href="#ecosystem-p2p-deployment-progress" title="Direct link to heading">​</a></h4><p>We reached <strong>50% of stake in hands of SPOs who run at least on P2P relay</strong>.  Now
+also Emurgo and CF are running some P2P relays. Also 20% of IOG relays are
+running in P2P mode.</p><p><img loading="lazy" alt="P2P Progress" src="/cardano-updates/assets/images/2023-07-06-p2p-progress-194a909569eebb016b1f24fb8941e2cc.png" width="1024" height="768" class="img_ev3q"></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented <em>bootstrapping for peer sharing</em> (also known as light peer
+sharing).  New downstream (inbound) peers are now added to the <em>known peers</em> of
+the <em>outbound governor</em>.  Together with peer sharing this allows for non
+registered relays to propagate through the network. <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">ouroboros-network#3596</a></p><p><em>Please note that peer sharing is disabled by default and is not considered safe
+until Bootstrap Peers (see below) or Genesis is implemented.</em></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="diffusion-p2p">Diffusion (P2P)<a class="hash-link" href="#diffusion-p2p" title="Direct link to heading">​</a></h4><ul><li><p>We designed a feature which will reduce the load on IOG relays (in future
+also run by CF &amp; Emurgo).  The feature consists of two parts.  A new source
+of peers called <em>bootstrap peers</em> (obtained from via an https request), the
+ability to switch from bootstrap peers to ledger peers if the node is synced
+(we are collaborating with the consensus team on the interface <a href="https://github.com/input-output-hk/ouroboros-consensus/blob/fbb8c8ee97517809dec0d0c8ae3fae9b8d272caf/docs/website/docs/bootstrap-peers-IER.md" target="_blank" rel="noopener noreferrer">Bootstrap
+Peers IER</a>).   This feature will be completed in Q3.
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">ouroboros-network#4530</a></p></li><li><p>We published a blog post about <a href="https://engineering.iog.io/2023-06-28-p2p" target="_blank" rel="noopener noreferrer">P2P design &amp; implementation</a>.</p></li><li><p>Karl Knutsson (CF) fixed an issue observed on a relay with a lot of outbound connections:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">ouroboros-network#4559</a>.</p></li><li><p>We merged changes which allow the consensus layer to start / stop block
+forging thread.  This will allow to deploy P2P block producing nodes which
+serve as a live backup node. <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a></p></li><li><p>We fixed a few bugs in local root peers DNS resolution service:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4583" target="_blank" rel="noopener noreferrer">ouroboros-network#4583</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4571" target="_blank" rel="noopener noreferrer">ouroboros-network#4571</a>.</p></li><li><p>We limited concurrency of DNS name resolutions: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">ouroboros-network#4596</a>.</p></li><li><p>Galois Inc implemented query option for Handshake: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</p></li><li><p>We fixed handshake query timeout: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">ouroboros-network#4608</a>.</p></li><li><p>We implemented warm valency for local root peers.  This can help when using
+DNS names in local root peers which resolve to many IP addresses. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a></p></li><li><p>We merged handshake changes which allow query protocol versions.  Thanks to
+James Parker from Galois Inc.: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a>.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-improvements--developments">Other Improvements &amp; Developments<a class="hash-link" href="#other-improvements--developments" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cddl">CDDL<a class="hash-link" href="#cddl" title="Direct link to heading">​</a></h4><ul><li><p>We added <code>node-to-node</code> and <code>node-to-client</code> CDDL specs / tests for encoding
+of <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>.  </p></li><li><p>We clarified an inconsistency between CDDL spec and implementation which is
+highly polymorphic.  We designed and implemented a fix for <code>tx-submission</code>
+and <code>local-tx-submission</code> mini-protocols.  Specs for other mini-protocols will
+be improved at a later stage. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">ouroboros-network#4580</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ping"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-ping" target="_blank" rel="noopener noreferrer">Cardano Ping</a><a class="hash-link" href="#cardano-ping" title="Direct link to heading">​</a></h4><ul><li><p><code>cardano-ping</code> command was deprecated in favour of <code>cardano-cli ping</code> (the
+transition was done by the <code>node</code> team).</p></li><li><p>Support for <code>node-to-client</code> protocol using Unix sockets.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">ouroboros-network#4601</a></p></li><li><p>Support for <code>NodeToNodeV_11</code> and <code>NodeToClientV_16</code>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4587" target="_blank" rel="noopener noreferrer">ouroboros-network#4587</a></p></li><li><p><code>cardano-cli ping</code> is now using <em>ISO8601</em> format for timestamps.  Formatting of
+messages was improved. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">ouroboros-network#4593</a></p></li><li><p><code>cardano-cli ping</code> has a new <code>--query-versions</code> flag which allows to query
+supported versions by the remote node.  This is supported by
+<code>cardano-node-8.1.0</code>. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">ouroboros-network#4589</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">cardano-node#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30/" target="_blank" rel="noopener noreferrer">cardano-cli#30</a></p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim"><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">IOSim</a><a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><ul><li><p>We fixed timeouts &amp; delays in <code>io-classes</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</p></li><li><p>We released <code>strict-stm-1.1.0.1</code> on Hackage which fixed a bug in package
+description file: <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">io-sim#101</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols"><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer">Typed Protocols</a><a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h4><ul><li>We published haddocks of <code>typed-protocols</code> at
+<a href="https://input-output-hk.github.io/typed-protocols" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/typed-protocols</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-client"><a href="https://github.com/input-output-hk/ouroboros-network/blob/master/cardano-client" target="_blank" rel="noopener noreferrer">Cardano Client</a><a class="hash-link" href="#cardano-client" title="Direct link to heading">​</a></h4><ul><li>We fixed a bug in <code>cardano-client-0.1.0.2</code> release which results in clients
+(e.g. <code>db-sync</code>) negotiate an experimental protocol version.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>After the split between consensus &amp; network, we made <code>cardano-client</code>
+independent of <code>ouroboros-consensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</p></li><li><p>We wrap all exceptions in <code>DiffusionError</code>: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">ouroboros-network#4537</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ci-improvements">CI improvements<a class="hash-link" href="#ci-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We switched to use GitHub merge queues in <code>ouroboros-network</code>, <code>io-sim</code> and
+<code>typed-protocols</code> repositories; <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4546" target="_blank" rel="noopener noreferrer">ouroboros-network#4546</a>.</p></li><li><p>We cleaned &amp; updated scripts which run on CI.</p></li><li><p>We implemented a script to verify &amp; release packages on CHaP; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">ouroboros-network#4542</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">ouroboros-network#4573</a>.</p></li><li><p>We implemented a new CI script and cleaned existing ones:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">ouroboros-network#4572</a>.</p></li><li><p>We don&#x27;t install cryptographic libraries on CI anymore as none of our
+packages requires them; <a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">ouroboros-network#4539</a>.</p></li><li><p>Improved caching of dependencies: <a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">ouroboros-network#4553</a>.</p></li><li><p>We made it possible to trigger building haddock manually:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">ouroboros-network#4549</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-94--96">GHC 9.4 &amp; 9.6<a class="hash-link" href="#ghc-94--96" title="Direct link to heading">​</a></h4><p>We made all repositories under our control compile with <code>ghc-9.4</code> and <code>ghc-9.6</code>
+which includes <code>ouroboros-network</code>, <code>io-sim</code>, <code>typed-protocols</code> and
+<code>Win32-network</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will continue towards our <a href="https://github.com/orgs/input-output-hk/projects/39/views/30" target="_blank" rel="noopener noreferrer">aspirational roadmap</a>.</p><ul><li>We will continue reviewing eclipse evasion.</li><li>As <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">ouroboros-consensus#140</a> was merged, we are making progress towards
+releasing P2P on block production nodes.  We hope to analyse performance
+regression on such nodes observed on the benchmarking cluster. <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=6875505" target="_blank" rel="noopener noreferrer">roadmap-3887</a></li><li>We are also focused on <a href="https://github.com/orgs/input-output-hk/projects/39/views/30?pane=issue&amp;itemId=8920085" target="_blank" rel="noopener noreferrer">roadmap-3969</a>. Note that it was expanded in Q2.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-04-04-network">Network Q1 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-04T00:00:00.000Z" itemprop="datePublished">April 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-01---2023-03">2023-01 - 2023-03<a class="hash-link" href="#2023-01---2023-03" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="gradual-dynamic-p2p-release-on-mainnet">Gradual dynamic P2P release on mainnet<a class="hash-link" href="#gradual-dynamic-p2p-release-on-mainnet" title="Direct link to heading">​</a></h4><p>We released two version of <code>cardano-node</code> with dynamic P2P capabilities:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.6" target="_blank" rel="noopener noreferrer"><code>1.35.6</code></a><ul><li>we found and fixed a bug in exception handling in <code>peer-state-actions</code><a href="https://github.com/input-output-hk/ouroboros-network/pull/4357" target="_blank" rel="noopener noreferrer">pull-4357</a></li><li>we found and fixed a busy loop when demoting a peer from hot to warm <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">pull-4385</a> </li></ul></li><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.7" target="_blank" rel="noopener noreferrer"><code>1.35.7</code></a><ul><li>includes interoperability in the legacy non-p2p network stack <a href="https://github.com/input-output-hk/outoboros-network/pull/4467" target="_blank" rel="noopener noreferrer">pull-4467</a></li></ul></li><li>we fixed a busy loop of demotion &amp; promotions: <code>warm -&gt; hot -&gt; warm</code>[pull-4485]<!-- --> /it will be included in <code>cardano-node-8.0.0</code> release/.</li></ul><p>Currently there are more than 200 P2P relays on mainnet.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h4><p>We implemented /peer sharing/ <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull-4019</a> which will be available as an
+experimental feature in one of the future <code>cardano-node</code> releases.</p><p>We implemented /light peer sharing/, e.g. adding inbound connections to the set
+of known peers of the outbound governor, which allows to bootstrap relays not
+registered on chain.  This complements peer sharing.  The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4277" target="_blank" rel="noopener noreferrer">pull-4277</a> is in
+late review stages.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h4><p>We finalised design of eclipse evasion and we started implementing it.  We
+have an initial implementation (not merged). We are in the process of extending
+our test suite to cover new implementation details: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>, <a href="https://github.com/input-output-hk/outoboros-network/pull/4462" target="_blank" rel="noopener noreferrer">pull-4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h4><p>Galois has been making progress on <em>Cardano Network Service Assurance</em> project.</p><ul><li><p>In cardano-node, they have developed a <code>datapoint</code> abstraction that creates
+a queue of (existing) log events, they now have two such <code>datapoint</code>s (of log
+events) implemented.</p></li><li><p>They have developed a <code>datapoint</code> client executable that can connect to a node
+which serves the &quot;new tracing&quot;.</p></li><li><p>They have been exploring approaches for the consolidation and analysis of
+<code>datapoint</code> data to extract actionable network health status.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li>We made it possible to configure accepted connections limit <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">pull-4902</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h4><ul><li><p>We fixed a bug in network simulation implementation of TCP simultaneous open <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">pull-4265</a>.</p></li><li><p>We introduced header-body split in the diffusion simulation <a href="https://github.com/input-output-hk/outoboros-network/pull/4419" target="_blank" rel="noopener noreferrer">pull-4419</a> (in review).</p></li><li><p>We introduced initiator only nodes in the diffusion simulation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4280" target="_blank" rel="noopener noreferrer">pull-4280</a>.</p></li><li><p>We fixed a connection-manager test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue-4370</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><p>We refactored <code>Snocket</code> interface decoupling it from the multiplexer
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">pull-4260</a>. This simplified some aspects of the KES agent implementation.</p></li><li><p>We introduces a record for CBOR codecs which are used for various data
+structures by mini-protocol codecs <a href="https://github.com/input-output-hk/outoboros-network/pull/4430" target="_blank" rel="noopener noreferrer">pull-4430</a>.</p></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h4><ul><li>We explained some limitations of CDDL in our technical report <a href="https://github.com/input-output-hk/ouroboros-network/pull/4351" target="_blank" rel="noopener noreferrer">pull-4351</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h4><ul><li>We fixed implementation of <code>MVar</code>&#x27;s <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">pull-70</a>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nothunks">NoThunks<a class="hash-link" href="#nothunks" title="Direct link to heading">​</a></h4><ul><li>We published a new version of <a href="https://hackage.haskell.org/package/nothunks" target="_blank" rel="noopener noreferrer"><code>nothunks</code></a> library to Hackage.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Finish implementation &amp; testing of eclipse evasion <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">issue-3886</a>.</li><li>Optimise connectivity to peers behind firewall <a href="https://github.com/input-output-hk/ouroboros-network/issues/4381" target="_blank" rel="noopener noreferrer">issue-4381</a>.</li><li>Finish the work on enabling block production dynamically to allow using P2P
+on block producers <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">issue-3159</a>.</li><li>If time permits we would like also to reserve some time for finishing
+publication of <code>io-sim</code> to Hackage.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-13-network">Network Quarterly Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>The primary goal of the networking team was to focus on the single relay
+release of P2P.  We fixed a number of small late bugs, and concluded QA
+&amp; performance testing.  Although it was discovered a regression in performance
+of  block production when P2P is enabled, relaying with P2P performs better
+comparing to a non p2p.  We concluded that this is not a blocker for the Single
+Relay Release which is planned shortly.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">Peer sharing</a> has gone through review and final review is
+just being done right now.  After merging it will still be disabled (hidden
+behind a flag) as it&#x27;s not safe without eclipse evasion.  We started
+implementing light peer sharing (i.e. include inbound peers into known peer set
+of the outbound governor).</p><p>We started a detailed eclipse evasion design, it will continue in the next
+quarter.</p><p>We also made a major revision of package structure of the network packages.  We
+ended up with a very clean dependency graph (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">pr #4155</a>).</p><p>Armando Santos delivered a talk at the <a href="https://sites.uclouvain.be/OPODIS2022/armando-details.html" target="_blank" rel="noopener noreferrer">ODOPIS 2022</a> conference on principles
+of distributed systems in Brussels.  The slides are available <a href="https://sites.uclouvain.be/OPODIS2022/slides/OPODIS2022-slides-Santos.pdf" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Neil Davies gave an invited seminar on <code>DeltaQ</code> at Université Catholique de
+Louvain.</p><p>We also found and fixed a few of bugs:</p><ul><li><p>a bug in keep alive mini-protocol which resulted in warm to cold transitions
+to be always executed through a timeout path rather than do a clean demotion
+(<!-- -->[pr #4168]<!-- -->).</p></li><li><p>fixed an assetion failure in the outbound governor (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>) </p></li></ul><ul><li>we fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><p>We will work towards the next release of P2P for block producer nodes.  This includes:</p><ul><li>analysing performance regression for BP nodes when using P2P</li><li>finish the work on controlling the block forger through node kernel (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a>)</li><li>address <a href="https://github.com/input-output-hk/ouroboros-network/issues/3907" target="_blank" rel="noopener noreferrer">issue #3907</a> and write a script to analyse deployment of P2P relays</li></ul><p>We would like also to push forward eclipse evasion.   Although most of the work
+has be done already the release of <code>io-sim</code> on <code>Hackage</code> will happen in the
+next quarter.</p><p>We would also like to address <a href="https://github.com/input-output-hk/ouroboros-network/issues/4244" target="_blank" rel="noopener noreferrer">chain-sync timeout issue</a> recently
+diagnosed by Karl Knutsson.</p><p>If time permits we would also like to address some technical debt, especially:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3387" target="_blank" rel="noopener noreferrer">enable nothunk in diffusion tests</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4085" target="_blank" rel="noopener noreferrer">refactor diffusion testnet simulation</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="risks">Risks<a class="hash-link" href="#risks" title="Direct link to heading">​</a></h3><p>The performance regression for block producer with P2P needs to be investigated
+in the near future.  This is blocker for the release of P2P on BP nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-ouroboros-network">Contributions to Ouroboros-Network<a class="hash-link" href="#contributions-to-ouroboros-network" title="Direct link to heading">​</a></h4><ul><li>We added <code>TraceDemoteLocalAsynchronous</code>, which enables notification of critical issues for SPOs</li><li>We fixed <code>cardano-ping</code> compatibility with <code>NodeToNodeV_10</code> (P2P, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">pr #4165</a>)</li><li>We fixed a bug in demotion peers to cold which affected P2P nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/61058aa5c28a144d723aae183d1745552d757334" target="_blank" rel="noopener noreferrer">commit-61058aa5c2</a>)</li><li>Karl Knutsson enhanced <code>SendFetchRequest</code> (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4170/commits/bb1c3dddeea78949f531c144bb4f2669eddf7f47" target="_blank" rel="noopener noreferrer">commit-bb1c3dddee</a>), open-source contribution)</li><li>We turned <code>SizeInBytes</code> into a newtype.</li><li>We extended <code>CONTRIBUTING.md</code>, <code>README.md</code>, added <code>CODE_OF_CONDUCT</code>.</li><li>We fixed DNS test failure <a href="https://github.com/input-output-hk/ouroboros-network/issues/4191" target="_blank" rel="noopener noreferrer">issue #4191</a></li><li>We fixed a simulation bug found in <a href="https://github.com/input-output-hk/ouroboros-network/issues/4258" target="_blank" rel="noopener noreferrer">issue #4258</a></li><li>[pr #4168]</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-cardano-node">Contributions to Cardano-Node<a class="hash-link" href="#contributions-to-cardano-node" title="Direct link to heading">​</a></h4><ul><li>We maintained the Single Relay Release <a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">pr #4612</a>, (e.g. fixing CI issues,
+Rebasing it when necessary, publishing packages to Cardano Haskell Packages);</li><li>We enhanced <code>JSON</code> serialisation / deserialisation of <code>NodeToNodeVersion</code> and <code>NodeToClientVersion</code>;</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="contributions-to-iosim">Contributions to IOSim<a class="hash-link" href="#contributions-to-iosim" title="Direct link to heading">​</a></h4><ul><li>We started to use Cardano Haskell Packages for <code>IOSim</code> (<a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pr #48</a>)</li><li>We updated change log files</li><li>We added support of <code>ghc-9.4</code> (<a href="https://github.com/input-output-hk/io-sim/pull/50" target="_blank" rel="noopener noreferrer">pr #50</a>)</li></ul><p>We also addressed the following issues in <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> in order to prepare the package for publication on Hackage:</p><ul><li>refactored <code>io-classes</code> timers API (<a href="https://github.com/input-output-hk/io-sim/issues/46" target="_blank" rel="noopener noreferrer">issue #46</a>);</li><li>created a new package <code>si-timers</code> which exposes an interface using SI units
+and is safe on 32-bit systems (<a href="https://github.com/input-output-hk/io-sim/issues/59" target="_blank" rel="noopener noreferrer">issue #59</a>);</li><li>added monad transformers instances for classes defined in <code>io-classes</code> (<a href="https://github.com/input-output-hk/io-sim/issues/58" target="_blank" rel="noopener noreferrer">issue #58</a>);</li><li>created <code>io-classes-mtl</code> package which includes (experimental) instances for monad transformers;</li><li>provide <code>MonadMonotonicTimeNSec</code> in <code>io-classes</code> and <code>MonadMonotonicTime</code> in <code>si-timers</code> (so that <code>io-classes</code> follow the <code>base</code> package);</li><li>added  <code>registerCancellableDelay</code> in <code>si-timers</code> (which allowed us to hide fancy timer api and clean <code>io-classes</code>)</li><li>added support for <code>js_HOST_ARCH</code> (the new GHC JS backend)</li></ul><p>Note the <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">pr #57</a> contains almost 40 commits, and was a major step forward for
+<code>io-sim</code> ecosystem.  We also prepared a draft <a href="https://github.com/input-output-hk/cardano-node/pull/4281" target="_blank" rel="noopener noreferrer">pr #4281</a> which updates
+<code>ouroboros-network</code>.</p><p>Other changes for <code>1.0.0.0</code> release on Hackage:</p><ul><li>Refactored test suite (<a href="https://github.com/input-output-hk/io-sim/pull/47" target="_blank" rel="noopener noreferrer">pr #47</a>)</li><li>Updated documentation, cabal files, <code>CONTRIBUTING</code>, <code>SECURITY</code> documents, etc in <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">pr #60</a>, currently under review.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2022-11-09-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-quarterly-update">Network Quarterly Update<a class="hash-link" href="#network-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-09---2022-11">2022-09 - 2022-11<a class="hash-link" href="#2022-09---2022-11" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-most-important-improvements">Summary of most important improvements<a class="hash-link" href="#summary-of-most-important-improvements" title="Direct link to heading">​</a></h3><p>During this quarter the networking team delivered low level specification of
+peer sharing &amp; eclipse evasion.  We held a session with the consensus &amp; the
+scientists; we got a positive feedback on the design.</p><p>Further we focused on implementation of peer sharing.  We produced a <a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">detail
+design</a> and an <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">early implementation</a>.</p><p>We prepared the <em>P2P Single Relay Release</em> (<code>cardano-node-1.35.5</code>).  It
+includes over <a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">130 patches</a> of network stack improvements over the
+previous version <code>1.35.4</code>, which were accomplished over a longer period of
+time.  Among them are both bug fixes and UX improvements for stake pool
+operators like simplified format of the <a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">topology file</a>, or
+improvements in the logged messages:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">tracing of early consensus exceptions</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">tracing of demotion of local root peers</a> (traced with
+<code>Warning</code> severity), the trace is called <code>TraceDemoteLocalAsynchronous</code>, in
+<code>json</code> format it is encoded as <code>DemoteLocalAsynchronous</code>.  For an SPO
+tracking these demotion is vital (such demotion could indicate that a block
+producer is no longer connected to its relays or vice versa)</li></ul><p>We also provide better integration with <a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">systemd</a> (socket
+activation improvements) or improvements in the networking stack:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3785" target="_blank" rel="noopener noreferrer">exit policies</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/3915" target="_blank" rel="noopener noreferrer">peer metrics improvements</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">DNS TTL</a> improvements (which make it harder to misconfigure the
+system, an issue discovered by the performance &amp; monitoring team),</li><li>do not trigger inbound idle timeout for <code>node-to-client</code> connections (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3844" target="_blank" rel="noopener noreferrer">pr
+#3844</a>), an issue reported to us by Matthias Benkort from
+Cardano Foundation.</li></ul><p>Duncan has been making progress with the input endorsers demo. His simulation
+provides a useful animated visualisation and live quantification of behaviour
+of the modeled design.</p><p>We also improved our e2e diffusion simulation by implementing header-body
+split, similar to what the real implementation does.</p><p>We also made some advances towards our future goals of P2P release for block
+producer nodes (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">pr #3800</a> - in review) &amp; for Daedalus users
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3968" target="_blank" rel="noopener noreferrer">pr #3690</a> - merged).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><ul><li><p>We expanded diffusion simulation with block-fetch protocol bringing it closer
+to the production system.</p></li><li><p>We addressed some additional technical depth in diffusion simulation</p></li><li><p>We slightly improved documentation &amp; CI of io-sim and typed-protocols
+repositories for open-source contributors.</p></li><li><p>We closed a number of issues towards publishing io-sim on Hackage (only two
+essential issues are left open).</p></li><li><p>We pushed a branch of typed-protocols which captures one of the developer UX
+problems in the API which we need to solve.</p></li><li><p>We identified and fixed an issue related to systemd sockets.</p></li><li><p>We identified and fixed an issue in consensus initialisation not giving
+feedback on early errors.</p></li><li><p>We deployed RT View, identified a number of issues which were communicated to
+the performance &amp; monitoring team.</p></li><li><p>We finished high level &amp; detailed design of peer sharing, very early
+implementation of peer sharing is done (note that peer sharing cannot be
+safely deployed without eclipse evasion &amp; genesis).</p></li><li><p>We finished high level design of eclipse evasion, and started working on
+a detailed design.</p></li><li><p>We were assigned the role of release engineer for 1.35.5 release (the P2P
+single relay release); we prepared a cardano-node for 1.35.5 release which
+contains more than 130 patches of just network stack improvements done over
+last few months.</p></li><li><p>We diagnosed and fixed an tricky bug in the peer state actions (a component
+which sits between outbound governor and connection manager). That bug was
+introduced earlier this year and never released. It was caught by the QA
+testing framework. We expanded our diffusion simulation to cover such case and
+also mitigated a chance for reintroducing such a bug in future.</p></li><li><p>We identified and quite likely mitigated a misconfiguration in the
+benchmarking cluster (next benchmarking run will confirm our hypothesis).</p></li><li><p>We simplified the format of p2p topology file, we got positive feedback from
+SPOs.</p></li><li><p>We raised severities of some of the logging messages, which is an important
+improvement for SPOs, exchanges and other users of the system.</p></li><li><p>We worked on input endorsers simulation which gives both animated and
+quantified live feedback on network operation, using a simplified model of
+a TCP/IP network. </p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="next-quarter">Next quarter<a class="hash-link" href="#next-quarter" title="Direct link to heading">​</a></h2><ul><li><p>Release the Single Relay P2P Release <code>1.35.5</code>.</p></li><li><p>Carry on with Peer Sharing (review, testing).</p></li><li><p>Deliver a talk at <a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">Conference on Principles of Distributed Systems 2022</a> in Brussels, Belgium.</p></li><li><p>Present Detailed Design of Eclipse Evasion and start implementation phase.</p></li><li><p>Work on P2P Block Producer release.</p></li><li><p>Carry on with publishing of <code>io-sim</code> on <code>Hackage</code>.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;open-source&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-01-13-open-source">Open-Source Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-quarterly-update">Open Source Quarterly Update<a class="hash-link" href="#open-source-quarterly-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11---2023-01">2022-11 - 2023-01<a class="hash-link" href="#2022-11---2023-01" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary">Summary<a class="hash-link" href="#summary" title="Direct link to heading">​</a></h3><p>In the last quarter the open-source initiative delivered a comprehensive report
+on the state of our repositories.  As part of this work stream we
+identified the key open-source repositories for the cardano project across all
+the projects  From a list of more than 500 repositories (some of which are
+forks) we identified key repositories which constitute the core of Cardano.
+20 of them were identified as to be transferred to the future MBO which will
+govern Cardano development.  Some where excluded (like <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> and
+<a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a>), to be govern by IOG, since they have a much broader
+application than Cardano itself, and thus we think their open-source future
+will be better outside of the Cardano umbrella.</p><p>Christian Taylor identified a number of ways we can improve our repositories to
+make them more attractive for open-source contributions by analysing each of
+them.  This includes adding or improving various documentation files, like
+<code>CONTRIBUTING</code> files, adding code of conduct, improving readme files, issue
+&amp; pull request templates etc.  Christian also computed various interesting
+metrics which gives a very good insight into the development practices: e.g.
+average merge ratio, average number of reviews, comments and many more!  The
+presentation is available <a href="https://docs.google.com/presentation/d/127IFEavlrZeeoFrVXFYWzSt0ugOkSL7isxjyM1vmMzQ" target="_blank" rel="noopener noreferrer">here</a>.</p><p>We followed with work on the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  We included
+a standard code of conduct which is now used by most important projects in the
+Cardano space.  We included <code>cardano-node</code>&#x27;s security policy and added
+a responsible disclosure policy.  We also described how roles and
+responsibilities should be clarified.  This progress was made by
+a collaborative effort of the Cardano Core, Plutus and Architecture teams, and
+it wouldn&#x27;t be possible without Michael Peyton Jones, Arnaud Bailly, Kevin
+Hammond, Jared Corduan and Marcin Szamotulski.</p><p>We also improved the documentation of key repositories, by adding description,
+improving their <code>README</code> file &amp; <code>CONTRIBUTING</code> files, adding code of conducts
+following the <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>.  This includes improvements to:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network" target="_blank" rel="noopener noreferrer"><code>ouroboros-network</code></a> (both <code>network</code> &amp; <code>consensus</code>)</li><li><a href="https://github.com/input-output-hk/cardano-ledger" target="_blank" rel="noopener noreferrer"><code>cardano-ledger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-node" target="_blank" rel="noopener noreferrer"><code>cardano-node</code></a></li></ul><p>And also</p><ul><li><a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a></li><li><a href="https://github.com/input-output-hk/typed-protocols" target="_blank" rel="noopener noreferrer"><code>typed-protocols</code></a></li><li><a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer"><code>cardano-prelude</code></a> (work in progress)</li></ul><p>The work was carried by Marcin Szamotulski, Addie Girouard and  Jared Corduan. </p><p>In this quarter we also identified a number of projects which can be published to
+<code>Hackage</code> (Haskell&#x27;s package repository) or <code>crate</code> (Rust package repository).
+The list contains 21 packages, 2 of which (<a href="https://hackage.haskell.org/package/hedgehog-extras" target="_blank" rel="noopener noreferrer"><code>hedgehog-extras</code></a> and
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>) are already published on Hackage and another 5 (from
+the <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a> repository) are close to be published.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h3><p>The progress of the open-source project is tracked in <a href="https://github.com/orgs/input-output-hk/projects/60/views/1" target="_blank" rel="noopener noreferrer">this project</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/open-source">open-source</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing">Performance &amp; Tracing Q3 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><ul><li>Release benchmarking</li><li>Developing and running UTxO-HD benchmarks - in-memory flavour</li><li>P2P benchmarks, facilitating rollout</li><li>Production-readiness of the new Nomad cluster has been reached</li><li>Optimization of and introspection capability for the new tracing system</li><li>GHC9 performance investigation (and possible remedy)</li><li>Conensus QTAs: first real-world application of prototype</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="release-benchmarking">Release benchmarking<a class="hash-link" href="#release-benchmarking" title="Direct link to heading">​</a></h4><p>Ongoing release benchmarking is a crucial safeguard to <code>cardano-node</code>&#x27;s release cycle from a performance perspective. We&#x27;ve performed and analyzed benchmarks for node versions <code>8.2.x</code> to <code>8.5</code> throughout Q3.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-benchmarks">UTxO-HD benchmarks<a class="hash-link" href="#utxo-hd-benchmarks" title="Direct link to heading">​</a></h4><p>Targeting a specific new feature in benchmarks requires development effort and fine-tuning the machinery. In Q3, we achieved that for the in-memory flavour of UTxO-HD, enabling benchmark delivery.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-benchmarks">P2P benchmarks<a class="hash-link" href="#p2p-benchmarks" title="Direct link to heading">​</a></h4><p>In Q3, we performed additional P2P benchmarks to facilitate the comprehensive rollout of that feature.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-nomad-cluster">New nomad cluster<a class="hash-link" href="#new-nomad-cluster" title="Direct link to heading">​</a></h4><p>The new hardware cluster for benchmarks, which is controlled through the new nomad backend, has received
+various rounds of validation and adjustments in Q3 - in addition to finalizing integration with the rest
+of our pipeline. The confidence in metrics gathered on the cluster is now sufficient for us to consider it
+ready for production use.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system">New tracing system<a class="hash-link" href="#new-tracing-system" title="Direct link to heading">​</a></h4><p>Our new tracing system has received various rounds of optimization in Q3. We could verify in our benchmarks that
+it is roughly on par with the legacy system while offering a richer feature set and greater flexibility.  </p><p>Additionally, in Q3 we equipped the system with an introspection capability. This is now used for generating
+end user documentation that stays in-sync with definitions in code, and for automated consistency checking of the entire system.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ghc9-performance">GHC9 performance<a class="hash-link" href="#ghc9-performance" title="Direct link to heading">​</a></h4><p>In Q3, a joint investigation with DevX into GHC9&#x27;s behaviour revealed where and how GHC9 misses opportunities for
+optimization of generated code. This led to an approach to annotate our codebase accordingly to re-enable
+those optimizations - which is still being validated.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h4><p>In collaboration with Consensus and DevX, we advanced the Consensus QTAs prototype capturing ledger operations&#x27;
+performance characteristics. It&#x27;s now applicable, and being applied, to a real-world task - namely
+gathering evidence of the effect of aforementioned changes allowing for performant GHC9 builds.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking:<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h4><p>In Q4, the focus will be on:</p><ul><li>facilitating the next mainnet release</li><li>benchmarking runs in the Conway era</li><li>developing benchmarks / workloads for Conway-exclusive actions</li><li>implementing a specialized benchmark setup for the UTxO-HD on-disk variant</li><li>developing new Plutus benchmarks to safeguard Plutus V3</li><li>benchmarks regarding the rollout of P2P</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h4><p>For certain blocking performance issues we&#x27;ve located the cause, or even found a solution in a cross-team effort. In Q4 we&#x27;ll advance that work to ensure the ongoing
+release cycle for mainnet, as well as make GHC9 become a viable release platform.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing-system-1">New tracing system<a class="hash-link" href="#new-tracing-system-1" title="Direct link to heading">​</a></h4><p>For the new tracing system, we&#x27;ll finalize optimization - current results are already on par with the legacy system. Furthermore, we will finish up comprehensive documentation, as well as description of a recommended setup, for which we can provide initial support.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-monitoring">UTxO-HD monitoring<a class="hash-link" href="#utxo-hd-monitoring" title="Direct link to heading">​</a></h4><p>We&#x27;ll augment our analysis pipeline so it can process monitoring data from UTxO-HD nodes connected to mainnet in a meaningful way.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h4><p>From Q4 on, this backend will be in production use. We plan on adding various UX and flexibility improvements, and further fine-tuning some profiles for nomad.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h4><p>We will prepare for a future move of our performance workbench into a separate project. This entails restructuring, refactoring and reimplementation of certain few components that currently assume to always be in sync with <code>cardano-node</code>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-component-qtas-co-development">Consensus component QTAs (co-development)<a class="hash-link" href="#consensus-component-qtas-co-development" title="Direct link to heading">​</a></h4><p>In Q4 there will be ongoing work with and support for the existing prototype. We plan to identify a fixed set of input data that yields results of high informative value, and to formalize the process to a point that enables future automation.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q2-consensus">Consensus Q2 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q2-network">Network Q2 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q2-sre">SRE Q2 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-performance-and-tracing">Performance &amp; Tracing Q3 2023 Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>2 posts tagged with &quot;sre&quot;</h1><a href="/cardano-updates/quarterly/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q2-sre">SRE Q2 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-04---2023-06">2023-04 - 2023-06<a class="hash-link" href="#2023-04---2023-06" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Expanding the darwin CI cluster and adding aarch64 builder support</li><li>Adding bare metal capability to bitte clusters</li><li>Creating a devx-ci cluster containing a Hydra build server and Linux build farm which is intended to replace Cicero functionality</li><li>Creation of pool performance analysis queries and scripting</li><li>Migration of testnet metadata server to cardano-world</li><li>Cardano shelley qa migration to cardano-world</li><li>Cardano sanchonet environment spin up to test Conway era functionality</li><li>Mainnet relay conversion to p2p topology usage is progressing with 50% of mainnet relays now using p2p topology and networking feature</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with the conversion of mainnet to using p2p topology</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/quarterly/2023-Q3-sre">SRE Q3 2023 Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-07T21:19:58.000Z" itemprop="datePublished">December 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2023-07---2023-09">2023-07 - 2023-09<a class="hash-link" href="#2023-07---2023-09" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="main-achievements">Main achievements<a class="hash-link" href="#main-achievements" title="Direct link to heading">​</a></h3><p>In addition to ongoing general maintenance and support of cardano environments, main SRE achievements for this quarter include:</p><ul><li>Completion of mainnet relay networking conversion to p2p topology</li><li>Cardano sanchonet environment respins for testing new cardano-node pre-release Conway era functionality</li><li>Stabilization of cardano-explorer in cardano-world using high IOPS bare metal machines</li><li>Creation of a nix content addressed packages repository, <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a>:<ul><li>To provide lightweight release binaries thereby avoiding sluggish nix flakes and devShells</li></ul></li><li>Creation of a cardano performance benchmarking cluster, <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf</a>:<ul><li>To replace legacy cluster benchmark tooling</li></ul></li><li>Creation of a cardano cluster composition repository, <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a>:<ul><li>For enabling multi-cluster, multi-role cardano network deployments</li></ul></li><li>Creation of a cardano testnets repository, <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a>:<ul><li>Utilizing cardano-parts for testnet deployments</li></ul></li><li>Creation of a sanchonet demo repository, <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a>:<ul><li>Utilizing cardano-parts for fast sanchonet test environment and demo purposes</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="next-steps">Next steps<a class="hash-link" href="#next-steps" title="Direct link to heading">​</a></h3><ul><li>Continue with migration of cardano-world testnets to cardano-playground</li><li>Proceed with spinup of mainnet p2p bootstrap cluster</li><li>Scale down mainnet non-p2p legacy cluster at the appropriate time</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/quarterly/tags/sre">sre</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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+<script src="/cardano-updates/assets/js/runtime~main.0180faa2.js"></script>
+<script src="/cardano-updates/assets/js/main.bc51b93f.js"></script>
+</body>
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+<?xml version="1.0" encoding="utf-8"?>
+<rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+    <channel>
+        <title>Cardano Updates Feed</title>
+        <link>https://input-output-hk.github.io/cardano-updates/</link>
+        <description>Regular updates from Cardano Development Teams</description>
+        <lastBuildDate>Wed, 06 Dec 2023 00:00:00 GMT</lastBuildDate>
+        <docs>https://validator.w3.org/feed/docs/rss2.html</docs>
+        <generator>https://github.com/jpmonette/feed</generator>
+        <language>en</language>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-12-06-ledger</link>
+            <guid>2023-12-06-ledger</guid>
+            <pubDate>Wed, 06 Dec 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway
+conformance testing working. We are now able to generate random valid data with the help
+of constraint based testing framework, apply that data to Conway Ledger rules and verify
+that the output matches to the one produced by the executable version of the Formal Ledger
+Specification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get
+Constitutional Committee query is complete and tested. Various improvements to the
+testing tools. Addition of more test cases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3888" target="_blank" rel="noopener noreferrer">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3902" target="_blank" rel="noopener noreferrer">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3855" target="_blank" rel="noopener noreferrer">pull-3855</a> - Remove unreachable proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3903" target="_blank" rel="noopener noreferrer">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3878" target="_blank" rel="noopener noreferrer">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3896" target="_blank" rel="noopener noreferrer">pull-3896</a> - Fix Brute force failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3904" target="_blank" rel="noopener noreferrer">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3907" target="_blank" rel="noopener noreferrer">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3883" target="_blank" rel="noopener noreferrer">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3909" target="_blank" rel="noopener noreferrer">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3908" target="_blank" rel="noopener noreferrer">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3912" target="_blank" rel="noopener noreferrer">pull-3912</a> - Removed call to tail, and the <!-- -->'<!-- -->watchPulser<!-- -->'<!-- --> test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3852" target="_blank" rel="noopener noreferrer">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3891" target="_blank" rel="noopener noreferrer">pull-3891</a> - Bump plutus to 1.17</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-12-06-mithril</link>
+            <guid>2023-12-06-mithril</guid>
+            <pubDate>Wed, 06 Dec 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator's performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1173" target="_blank" rel="noopener noreferrer">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1357" target="_blank" rel="noopener noreferrer">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1385" target="_blank" rel="noopener noreferrer">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href="https://github.com/input-output-hk/mithril/issues/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href="https://github.com/input-output-hk/mithril/issues/1390" target="_blank" rel="noopener noreferrer">#1390</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & Tracing Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-12-04-performance-and-tracing</link>
+            <guid>2023-12-04-performance-and-tracing</guid>
+            <pubDate>Mon, 04 Dec 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We've measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we've run system integration level benchmarks in the Conway era for the first time, on the same node version.
+Only Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.
+Currently, we're looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we're interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we've
+improved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The new tracing system is currently receiving usability improvements as we're reworking the output of several trace messages.
+Additionally, we're setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We've been working on adapting various benchmarking workloads, which are defined by our workbench's profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we're implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-12-01-hydra</link>
+            <guid>2023-12-01-hydra</guid>
+            <pubDate>Fri, 01 Dec 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,
+featuring demonstrations and the preparation of the monthly report. They
+addressed flakiness in tests and enhanced the logs json schema,
+improving overall test reliability. Additionally, the team successfully
+built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform
+support. They further improved the network configuration by detecting
+incompatible persisted states, contributing to overall system
+robustness. Finally, the team released version 0.14.0, highlighting
+their commitment to delivering regular updates and improvements.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Monthly Review
+<a href="https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM" target="_blank" rel="noopener noreferrer">meeting</a>
+packed with demonstrations and prepared monthly report
+<a href="https://github.com/input-output-hk/hydra/pull/1189" target="_blank" rel="noopener noreferrer">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema
+<a href="https://github.com/input-output-hk/hydra/pull/1188" target="_blank" rel="noopener noreferrer">#<!-- -->1188</a><a href="https://github.com/input-output-hk/hydra/issues/1190" target="_blank" rel="noopener noreferrer">#<!-- -->1190</a><a href="https://github.com/input-output-hk/hydra/pull/1192" target="_blank" rel="noopener noreferrer">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI
+<a href="https://github.com/input-output-hk/hydra/pull/1182" target="_blank" rel="noopener noreferrer">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted
+states <a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-29-consensus</link>
+            <guid>2023-11-29-consensus</guid>
+            <pubDate>Wed, 29 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team implemented and tested a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/525" target="_blank" rel="noopener noreferrer">patch</a> that does not propagate future headers.
+It is under review, and we expect it can be released in the next Cardano node version.
+On the UTxO-HD front, we <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/510" target="_blank" rel="noopener noreferrer">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.
+With this prototype finished we can start integrating the rest of the code.
+We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/513" target="_blank" rel="noopener noreferrer">investigated</a> the unexpected performance degradation observed when acquiring the block context.
+We also <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre" target="_blank" rel="noopener noreferrer">released Cardano node 8.7.0</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-29-mithril</link>
+            <guid>2023-11-29-mithril</guid>
+            <pubDate>Wed, 29 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released the initial version of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer">Mithril client library</a>, enabling developers to integrate core Mithril features into their applications. They also released a new distribution, <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Release of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released" target="_blank" rel="noopener noreferrer">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href="https://github.com/input-output-hk/mithril/issues/1325" target="_blank" rel="noopener noreferrer">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1375" target="_blank" rel="noopener noreferrer">#1375</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-24-hydra</link>
+            <guid>2023-11-24-hydra</guid>
+            <pubDate>Fri, 24 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team spent significant time opening a head among
+themselves on <code>mainnet</code> using the release candidate, revealing and
+addressing lurking bugs such as
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a>. Also
+required was this change to dynamically calculate the min utxo value
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, a
+necessary adjustment following the switch to inline datums. The team
+engaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent
+changes and collaborated on drafting feature ideas, including providing
+<a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway support</a>
+for the Hydra roadmap. As part of ongoing improvements, they
+experimented with writing the specification in markdown instead of
+LaTex.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a> in the
+release candidate</li><li>Calculate the min utxo value instead of hard-coding it
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, which is
+needed since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss
+recent changes and way forward</li><li>Drafted features ideas to provide <a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway
+support</a> on the
+Hydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this
+scope</a></li><li>Complete tidying up chain layer via stateless observation changes in
+hydra-node
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway
+<a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#<!-- -->1114</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-24-sre</link>
+            <guid>2023-11-24-sre</guid>
+            <pubDate>Fri, 24 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href="https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href="https://github.com/input-output-hk/cardano-node/pull/5537" target="_blank" rel="noopener noreferrer">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn't desired</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/20" target="_blank" rel="noopener noreferrer">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster's static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/6" target="_blank" rel="noopener noreferrer">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster's static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offchain-metadata-tools">Offchain-metadata-tools<a class="hash-link" href="#offchain-metadata-tools" title="Direct link to heading">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href="https://github.com/input-output-hk/offchain-metadata-tools/pull/61" target="_blank" rel="noopener noreferrer">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-22-ledger</link>
+            <guid>2023-11-22-ledger</guid>
+            <pubDate>Wed, 22 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of
+CDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not
+previously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no
+longer allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting
+with Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3858" target="_blank" rel="noopener noreferrer">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3860" target="_blank" rel="noopener noreferrer">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3864" target="_blank" rel="noopener noreferrer">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3859" target="_blank" rel="noopener noreferrer">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3867" target="_blank" rel="noopener noreferrer">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3869" target="_blank" rel="noopener noreferrer">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3863" target="_blank" rel="noopener noreferrer">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3861" target="_blank" rel="noopener noreferrer">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3875" target="_blank" rel="noopener noreferrer">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3876" target="_blank" rel="noopener noreferrer">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3884" target="_blank" rel="noopener noreferrer">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3868" target="_blank" rel="noopener noreferrer">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3792" target="_blank" rel="noopener noreferrer">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3885" target="_blank" rel="noopener noreferrer">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3886" target="_blank" rel="noopener noreferrer">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3854" target="_blank" rel="noopener noreferrer">pull-3854</a> - Integration work for node 8.7.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3872" target="_blank" rel="noopener noreferrer">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3871" target="_blank" rel="noopener noreferrer">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3874" target="_blank" rel="noopener noreferrer">pull-3874</a> - Post release changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3880" target="_blank" rel="noopener noreferrer">pull-3880</a> - Remove generic-monoid dependency</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3887" target="_blank" rel="noopener noreferrer">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-22-mithril</link>
+            <guid>2023-11-22-mithril</guid>
+            <pubDate>Wed, 22 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1326" target="_blank" rel="noopener noreferrer">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href="https://github.com/input-output-hk/mithril/issues/1352" target="_blank" rel="noopener noreferrer">#1352</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Initial CIP 1694 Security Analysis and Responses]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-20-cip1694</link>
+            <guid>2023-11-20-cip1694</guid>
+            <pubDate>Mon, 20 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule "The Cardano network must always be able to produce new blocks" - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a 'guardrails document' in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p>]]></content:encoded>
+            <category>ledger</category>
+            <category>cip1694</category>
+            <category>security</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-17-hydra</link>
+            <guid>2023-11-17-hydra</guid>
+            <pubDate>Fri, 17 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed
+misleading errors regarding collect com transactions, resolved a security
+advisory (CVE-2023-42806), and simplified the Hydra Head protocol by using
+inline datums. The team also tackled minor inconsistencies in specifications and
+implementation, documented reasons for potentially dropped close transactions by
+the cardano-node, and collaborated with SundaeLabs on an offline mode for
+<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about
+incremental de-/commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href="https://github.com/input-output-hk/hydra/issues/839" target="_blank" rel="noopener noreferrer">#839</a></li><li>Addressed security advisory <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a> in PR <a href="https://github.com/input-output-hk/hydra/pull/1161" target="_blank" rel="noopener noreferrer">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href="https://github.com/input-output-hk/hydra/pull/1162" target="_blank" rel="noopener noreferrer">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href="https://github.com/input-output-hk/hydra/issues/1104" target="_blank" rel="noopener noreferrer">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href="https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A" target="_blank" rel="noopener noreferrer">open bugs</a></li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this scope</a></li><li>Update dependencies to prepare for Conway <a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & Tracing Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-17-performance-and-tracing</link>
+            <guid>2023-11-17-performance-and-tracing</guid>
+            <pubDate>Fri, 17 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags
+and mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial
+we can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we've been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we've observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we've seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that
+there is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>
+service on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>For future benchmarks to be built around PlutusV3, we've equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes
+to the execution budgets by developing specialized workloads.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure
+performance for a long service run time, we're currently equipping the service binary with the same capability to
+emit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,
+more detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables
+our team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.
+When alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-16-network</link>
+            <guid>2023-11-16-network</guid>
+            <pubDate>Thu, 16 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 48]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-48">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22" target="_blank" rel="noopener noreferrer">sprint 48</a><a class="hash-link" href="#high-level-overview-of-sprint-48" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing bootstrap peers, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ioclasses--iosim">IOClasses / IOSim<a class="hash-link" href="#ioclasses--iosim" title="Direct link to heading">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.
+The recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href="https://github.com/input-output-hk/io-sim/pull/117" target="_blank" rel="noopener noreferrer">io-sim#117</a>.
+We released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href="https://github.com/input-output-hk/io-sim/pull/119" target="_blank" rel="noopener noreferrer">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href="https://github.com/input-output-hk/io-sim/pull/123" target="_blank" rel="noopener noreferrer">io-sim#123</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4707" target="_blank" rel="noopener noreferrer">ouroboros-network#4707</a>.
+We continued reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4625" target="_blank" rel="noopener noreferrer">ouroboros-network#4625</a> PR, which refactors
+<code>RootPeersDNS</code> module.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-15-consensus</link>
+            <guid>2023-11-15-consensus</guid>
+            <pubDate>Wed, 15 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).
+This <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.
+However, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.
+On the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.
+Therefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/434" target="_blank" rel="noopener noreferrer">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href="https://github.com/jasagredo" target="_blank" rel="noopener noreferrer">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-15-mithril</link>
+            <guid>2023-11-15-mithril</guid>
+            <pubDate>Wed, 15 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the 'release-mainnet' aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1343" target="_blank" rel="noopener noreferrer">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href="https://github.com/input-output-hk/mithril/issues/1235" target="_blank" rel="noopener noreferrer">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-14-node-cli-api</link>
+            <guid>2023-11-14-node-cli-api</guid>
+            <pubDate>Tue, 14 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-11-01 - 2023-11-14</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/451" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (6/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/448" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (5/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/444" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/443" target="_blank" rel="noopener noreferrer">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/441" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/436" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/435" target="_blank" rel="noopener noreferrer">Update to <code>cardano-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/434" target="_blank" rel="noopener noreferrer">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/432" target="_blank" rel="noopener noreferrer">Release 8.14.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/430" target="_blank" rel="noopener noreferrer">Upgrade cardano-api to 8.30</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/428" target="_blank" rel="noopener noreferrer">Command types for <code>node</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/427" target="_blank" rel="noopener noreferrer">Split governance <code>MIRTransferConstructor</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/426" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/425" target="_blank" rel="noopener noreferrer">Command argument types for <code>drep</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/421" target="_blank" rel="noopener noreferrer">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/419" target="_blank" rel="noopener noreferrer">Command arguments types for stake-pool commands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/364" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/360" target="_blank" rel="noopener noreferrer">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/358" target="_blank" rel="noopener noreferrer">Protocol version change is not common to all versions anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/355" target="_blank" rel="noopener noreferrer">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/354" target="_blank" rel="noopener noreferrer">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/353" target="_blank" rel="noopener noreferrer">Modify foldBlocks to recurse on ledger events </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/352" target="_blank" rel="noopener noreferrer">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/351" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5525" target="_blank" rel="noopener noreferrer">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-10-hydra</link>
+            <guid>2023-11-10-hydra</guid>
+            <pubDate>Fri, 10 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published
+the monthly report for October, providing updates on project developments. The
+team delivered a presentation and workshop at the Cardano Summit, contributing
+to community engagement. They implemented a \"dirt road\" solution for the
+\"Ignored init tx\" notification and moved the <code>hydra-poll</code> example project to a
+dedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool
+for Hydra Heads, updated the toolchain to GHC 9.6.3, and made various
+improvements to tooling and code formatting. They addressed specific issues,
+such as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the
+rewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test
+suite by fetching network configurations dynamically. Lastly, they actively
+reviewed pull requests and architectural decision records from the community,
+including contributions from SundaeSwap. An experiment, the Hydra tally, was
+completed and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Published the monthly <a href="https://hydra.family/head-protocol/monthly/2023-10" target="_blank" rel="noopener noreferrer">report for
+october</a></li><li>Given a presentation / workshop at the Cardano summit
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Dirt road implementation for \"Ignored init tx\" notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a> (without
+stateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a
+dedicated
+<a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling
+and code formatting
+<a href="https://github.com/input-output-hk/hydra/pull/1135" target="_blank" rel="noopener noreferrer">#1135</a><a href="https://github.com/input-output-hk/hydra/pull/1152" target="_blank" rel="noopener noreferrer">#1152</a><a href="https://github.com/input-output-hk/hydra/pull/1151" target="_blank" rel="noopener noreferrer">#1151</a><a href="https://github.com/input-output-hk/hydra/pull/1154" target="_blank" rel="noopener noreferrer">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing
+keys <a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Fetch network configurations instead of packaging them into
+hydra-cluster (smoke) test suite
+<a href="https://github.com/input-output-hk/hydra/pull/1156" target="_blank" rel="noopener noreferrer">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)
+<a href="https://github.com/input-output-hk/hydra/pull/1118" target="_blank" rel="noopener noreferrer">#1118</a><a href="https://github.com/input-output-hk/hydra/pull/1157" target="_blank" rel="noopener noreferrer">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor
+existing code towards more stateless observation</li><li>Start work on incremental decommits</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-10-sre</link>
+            <guid>2023-11-10-sre</guid>
+            <pubDate>Fri, 10 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href="https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href="https://github.com/input-output-hk/cardano-parts/pull/18" target="_blank" rel="noopener noreferrer">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href="https://github.com/input-output-hk/cardano-parts/pull/19" target="_blank" rel="noopener noreferrer">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href="https://github.com/input-output-hk/cardano-parts/pull/21" target="_blank" rel="noopener noreferrer">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/5" target="_blank" rel="noopener noreferrer">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migration to play: <a href="https://github.com/input-output-hk/iohk-nix/pull/561" target="_blank" rel="noopener noreferrer">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-09-db-sync</link>
+            <guid>2023-11-09-db-sync</guid>
+            <pubDate>Thu, 09 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix
+tags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.
+We have completed the initial implementation for the bootstrap instance objective.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1558" target="_blank" rel="noopener noreferrer">#1558</a></li><li>Fix of the committee key size
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1544" target="_blank" rel="noopener noreferrer">#1544</a></li><li>Workaround a ledger issue with unregistered pools
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1542" target="_blank" rel="noopener noreferrer">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1539" target="_blank" rel="noopener noreferrer">#1539</a></li><li>Rename offline to offchain
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1533" target="_blank" rel="noopener noreferrer">#1533</a></li><li>Transfer existing tests to Conway era
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1529" target="_blank" rel="noopener noreferrer">#1529</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1547" target="_blank" rel="noopener noreferrer">#1547</a></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-08-ledger</link>
+            <guid>2023-11-08-ledger</guid>
+            <pubDate>Wed, 08 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and
+tooling that we use for testing Ledger. Major Conway bugs that were discovered and
+squashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an
+ordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate
+certificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a
+serious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on
+expired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized "Imp" test library that allows us
+writing concise stateful unit tests for verifying the Ledger logic. Serious progress has
+been made on the conformance testing, where we can now interface with Haskell generated
+code from the Agda specification. Serialization testing has been extended to increase
+binary conformance coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3808" target="_blank" rel="noopener noreferrer">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3801" target="_blank" rel="noopener noreferrer">pull-3801</a> - Fix epoch rule and tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3803" target="_blank" rel="noopener noreferrer">pull-3803</a> - Fix delegation validation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3759" target="_blank" rel="noopener noreferrer">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3779" target="_blank" rel="noopener noreferrer">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3794" target="_blank" rel="noopener noreferrer">pull-3794</a> - Added anchor to resign certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3797" target="_blank" rel="noopener noreferrer">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3848" target="_blank" rel="noopener noreferrer">pull-3848</a> - Plutus modules restructure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3840" target="_blank" rel="noopener noreferrer">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3856" target="_blank" rel="noopener noreferrer">pull-3856</a> - Add governance related ledger events</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3825" target="_blank" rel="noopener noreferrer">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3831" target="_blank" rel="noopener noreferrer">pull-3831</a> - Treasury withdrawal fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3791" target="_blank" rel="noopener noreferrer">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3836" target="_blank" rel="noopener noreferrer">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3846" target="_blank" rel="noopener noreferrer">pull-3846</a> - Revert argument order swap.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3782" target="_blank" rel="noopener noreferrer">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3842" target="_blank" rel="noopener noreferrer">pull-3842</a> - Imp improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3844" target="_blank" rel="noopener noreferrer">pull-3844</a> - Add mappings to Agda types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3853" target="_blank" rel="noopener noreferrer">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3809" target="_blank" rel="noopener noreferrer">pull-3809</a> - CDDL roundtrip testing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3832" target="_blank" rel="noopener noreferrer">pull-3832</a> - Treasury withdrawals tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3839" target="_blank" rel="noopener noreferrer">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3841" target="_blank" rel="noopener noreferrer">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3843" target="_blank" rel="noopener noreferrer">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3795" target="_blank" rel="noopener noreferrer">pull-3795</a> - Bump plutus to 1.15</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3798" target="_blank" rel="noopener noreferrer">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3799" target="_blank" rel="noopener noreferrer">pull-3799</a> - Changes needed for 8.6 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3807" target="_blank" rel="noopener noreferrer">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3819" target="_blank" rel="noopener noreferrer">pull-3819</a> - Fixups needed for a release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3829" target="_blank" rel="noopener noreferrer">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3830" target="_blank" rel="noopener noreferrer">pull-3830</a> - Bump aeson to 2.2</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3833" target="_blank" rel="noopener noreferrer">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3828" target="_blank" rel="noopener noreferrer">pull-3828</a> - Add changelog for node release 8.6</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-08-mithril</link>
+            <guid>2023-11-08-mithril</guid>
+            <pubDate>Wed, 08 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the 'release-mainnet' aggregator.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href="https://github.com/input-output-hk/mithril/issues/1322" target="_blank" rel="noopener noreferrer">#1322</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-01-consensus</link>
+            <guid>2023-11-01-consensus</guid>
+            <pubDate>Wed, 01 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">survivable eclipse duration</a>, which is part of our work <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/427" target="_blank" rel="noopener noreferrer">supporting Genesis delivery</a>, and how to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">improve the handling of blocks from the future</a>.
+Regarding the UTxO-HD branch, we managed to run a node with <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.
+We also <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122" target="_blank" rel="noopener noreferrer">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-11-01-mithril</link>
+            <guid>2023-11-01-mithril</guid>
+            <pubDate>Wed, 01 Nov 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the 'devnet' faster and fixed some regressions in the Mithril client CLI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1321" target="_blank" rel="noopener noreferrer">#1321</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-27-hydra</link>
+            <guid>2023-10-27-hydra</guid>
+            <pubDate>Fri, 27 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid
+overwriting existing keys, and resolved issues related to the rewritten
+<code>hydra-tui</code>. They also worked on a \"dirt road\" implementation for the
+\"Ignored init tx\" notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including
+implementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check
+out our Masterclass about \"Developing Hydra + Mithril for Scaling Cardano\" on
+Friday, November 3 at 14:00-15:30 local time in the \"Al Dar\" room!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys
+<a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Finalized cardano summit preparation
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">link to
+repository</a></li><li>Dirt road implementation for \"Ignored init tx\" notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-27-network</link>
+            <guid>2023-10-27-network</guid>
+            <pubDate>Fri, 27 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 47]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-47">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22" target="_blank" rel="noopener noreferrer">sprint 47</a><a class="hash-link" href="#high-level-overview-of-sprint-47" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests">CI / Tests<a class="hash-link" href="#ci--tests" title="Direct link to heading">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>
+function used for testing codecs which triggered out of memory manager (OOM) on
+some platforms (<a href="https://github.com/input-output-hk/typed-protocols/pull/43" target="_blank" rel="noopener noreferrer">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI
+<code>timeouts</code> (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680" target="_blank" rel="noopener noreferrer">connection-manager-fix</a>).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="keepalive-client">KeepAlive client<a class="hash-link" href="#keepalive-client" title="Direct link to heading">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed
+by Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>), <a href="https://github.com/input-output-hk/ouroboros-network/issues/4689" target="_blank" rel="noopener noreferrer">ouroboros-network#4689</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois">Galois<a class="hash-link" href="#galois" title="Direct link to heading">​</a></h3><p>We merged two large PRs prepared by <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4660" target="_blank" rel="noopener noreferrer">inspect <code>error</code> call sites</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4663" target="_blank" rel="noopener noreferrer">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance-cnsa">Cardano Network Service Assurance (CNSA)<a class="hash-link" href="#cardano-network-service-assurance-cnsa" title="Direct link to heading">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new "CSNA analysis" that provides, for each sampler node, the
+block download throughput in bytes over time.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-chap-release">New CHaP Release<a class="hash-link" href="#new-chap-release" title="Direct link to heading">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/547" target="_blank" rel="noopener noreferrer">chap#547</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests-1">CI / Tests<a class="hash-link" href="#ci--tests-1" title="Direct link to heading">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of
+<code>IOSim</code> traces without retaining them, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696" target="_blank" rel="noopener noreferrer">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test
+artefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for
+<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to
+run concurrently, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/4623" target="_blank" rel="noopener noreferrer">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4694" target="_blank" rel="noopener noreferrer">inbound-governor: connection leak</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4607" target="_blank" rel="noopener noreferrer">connection-manager: assertion failure</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4605" target="_blank" rel="noopener noreferrer">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production
+code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release-process">Release Process<a class="hash-link" href="#release-process" title="Direct link to heading">​</a></h3><p>We updated our release process &amp; associated scripts, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4705" target="_blank" rel="noopener noreferrer">ouroboros-network#4705</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-27-sre</link>
+            <guid>2023-10-27-sre</guid>
+            <pubDate>Fri, 27 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href="https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href="https://github.com/input-output-hk/cardano-parts/pull/17" target="_blank" rel="noopener noreferrer">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href="https://github.com/input-output-hk/cardano-playground/pull/4" target="_blank" rel="noopener noreferrer">cardano-playground-pull-4</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-25-mithril</link>
+            <guid>2023-10-25-mithril</guid>
+            <pubDate>Wed, 25 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2342.0" target="_blank" rel="noopener noreferrer"><code>2342.0</code></a>. This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1133" target="_blank" rel="noopener noreferrer">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1184" target="_blank" rel="noopener noreferrer">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href="https://github.com/input-output-hk/mithril/issues/1306" target="_blank" rel="noopener noreferrer">#1306</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-24-node-cli-api</link>
+            <guid>2023-10-24-node-cli-api</guid>
+            <pubDate>Tue, 24 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-10-11 - 2023-10-24</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/394" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/393" target="_blank" rel="noopener noreferrer">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/390" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/389" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/380" target="_blank" rel="noopener noreferrer">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/379" target="_blank" rel="noopener noreferrer">drep registration-certificate: add a golden test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/378" target="_blank" rel="noopener noreferrer">Disambiguate treasury withdrawal flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/375" target="_blank" rel="noopener noreferrer">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/374" target="_blank" rel="noopener noreferrer">Add <code>conway governance action view</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/372" target="_blank" rel="noopener noreferrer">Ch/clearer anchor flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/371" target="_blank" rel="noopener noreferrer">Command argument types for <code>transaction</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/370" target="_blank" rel="noopener noreferrer">Remove eras' constitution-hash</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/368" target="_blank" rel="noopener noreferrer">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/367" target="_blank" rel="noopener noreferrer">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/366" target="_blank" rel="noopener noreferrer">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/365" target="_blank" rel="noopener noreferrer"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/364" target="_blank" rel="noopener noreferrer">Command argument types for governance key commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/363" target="_blank" rel="noopener noreferrer">Add test of voting using a cc hot key</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/338" target="_blank" rel="noopener noreferrer">Add Show instance for FoldBlocksError</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/336" target="_blank" rel="noopener noreferrer">Upgrade typed-protocols to 1.1.1</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/332" target="_blank" rel="noopener noreferrer">Improved validity range handling</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/330" target="_blank" rel="noopener noreferrer">Delete <code>AlonzoEraOnly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/329" target="_blank" rel="noopener noreferrer">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/327" target="_blank" rel="noopener noreferrer">DRep extended key: add CastVerificationKeyRole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/326" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/325" target="_blank" rel="noopener noreferrer">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/324" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/323" target="_blank" rel="noopener noreferrer">Support Plutus V1 in Conway</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/322" target="_blank" rel="noopener noreferrer">Parameterize GovernanceAction on era </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/320" target="_blank" rel="noopener noreferrer">Support DRep extended keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/317" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/314" target="_blank" rel="noopener noreferrer">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/313" target="_blank" rel="noopener noreferrer">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/312" target="_blank" rel="noopener noreferrer">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5515" target="_blank" rel="noopener noreferrer">Factor out file creation for SPO</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5504" target="_blank" rel="noopener noreferrer">Tracer documentation generation enhacements </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-20-hydra</link>
+            <guid>2023-10-20-hydra</guid>
+            <pubDate>Fri, 20 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API's submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.
+This improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.
+This effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href="https://github.com/input-output-hk/hydra/pull/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li><a href="https://github.com/input-output-hk/hydra/issues/1120" target="_blank" rel="noopener noreferrer">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href="https://github.com/input-output-hk/hydra/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href="https://github.com/input-output-hk/hydra/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href="https://github.com/input-output-hk/hydra/pull/1121" target="_blank" rel="noopener noreferrer">#1121</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-18-consensus</link>
+            <guid>2023-10-18-consensus</guid>
+            <pubDate>Wed, 18 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330" target="_blank" rel="noopener noreferrer">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href="https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069" target="_blank" rel="noopener noreferrer">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">422</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> finished his cycle as release engineer. Node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">4251</a>).</li><li>We prepared the integration of <a href="https://github.com/input-output-hk/cardano-node/pull/5502" target="_blank" rel="noopener noreferrer">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">issue</a>).</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-18-mithril</link>
+            <guid>2023-10-18-mithril</guid>
+            <pubDate>Wed, 18 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href="https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq" target="_blank" rel="noopener noreferrer">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1298" target="_blank" rel="noopener noreferrer">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href="https://github.com/input-output-hk/mithril/issues/1292" target="_blank" rel="noopener noreferrer">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-15-network</link>
+            <guid>2023-10-15-network</guid>
+            <pubDate>Sun, 15 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 46]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-46">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22" target="_blank" rel="noopener noreferrer">sprint 46</a><a class="hash-link" href="#high-level-overview-of-sprint-46" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We diagnosed the performance regression of the new design. The work on
+<code>typed-protocols</code> will be postponed.  For more details see the
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4691" target="_blank" rel="noopener noreferrer">PR</a> which updates the <code>demo-ping-pong</code> and
+<code>demo-chain-sync</code> applications.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We made progress in review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4644" target="_blank" rel="noopener noreferrer">ouroboros-network#4644</a>, which simplifies the
+peer sharing and fixes the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4642" target="_blank" rel="noopener noreferrer">ouroboros-network#4642</a> issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We reviewed the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a> PR which inspects all the uses of
+<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-13-hydra</link>
+            <guid>2023-10-13-hydra</guid>
+            <pubDate>Fri, 13 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team's primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project's structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-13-ledger</link>
+            <guid>2023-10-13-ledger</guid>
+            <pubDate>Fri, 13 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to
+testing. For this reason there is a very little amount features that are reported this
+time aorund. Notable Conway related changes are a specialized ledger query for getting
+Constitutional Committee state and prevention of submitting proposal procedures that have
+no valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip
+serialization. As a result of this extra testing a bug in Conway Genesis serialization
+was eliminated.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3768" target="_blank" rel="noopener noreferrer">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3781" target="_blank" rel="noopener noreferrer">pull-3781</a> - CommitteeState query</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-and-releasing">Integration and releasing<a class="hash-link" href="#integration-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3774" target="_blank" rel="noopener noreferrer">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3770" target="_blank" rel="noopener noreferrer">pull-3770</a> - cabal.project: Bump index states</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3778" target="_blank" rel="noopener noreferrer">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3769" target="_blank" rel="noopener noreferrer">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3783" target="_blank" rel="noopener noreferrer">pull-3783</a> - Update TranslationInstance.hs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3775" target="_blank" rel="noopener noreferrer">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3793" target="_blank" rel="noopener noreferrer">pull-3793</a> - Fix sums with negative RHS.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-13-sre</link>
+            <guid>2023-10-13-sre</guid>
+            <pubDate>Fri, 13 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href="https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href="https://github.com/input-output-hk/cardano-parts/pull/16" target="_blank" rel="noopener noreferrer">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-parts/pull/15" target="_blank" rel="noopener noreferrer">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-playground/pull/3" target="_blank" rel="noopener noreferrer">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href="https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-11-mithril</link>
+            <guid>2023-10-11-mithril</guid>
+            <pubDate>Wed, 11 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a>, the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href="https://github.com/input-output-hk/mithril/issues/1282" target="_blank" rel="noopener noreferrer">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-10-node-cli-api</link>
+            <guid>2023-10-10-node-cli-api</guid>
+            <pubDate>Tue, 10 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-09-27 - 2023-10-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/347" target="_blank" rel="noopener noreferrer">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/344" target="_blank" rel="noopener noreferrer">Rename create-new-committee into update-committee</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/341" target="_blank" rel="noopener noreferrer">New version cardano-cli-8.12.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/338" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/337" target="_blank" rel="noopener noreferrer">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/330" target="_blank" rel="noopener noreferrer">Drep certification registration: add parameters for anchor</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/329" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/327" target="_blank" rel="noopener noreferrer">Move files that are not golden files into <code>input</code> directory</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/324" target="_blank" rel="noopener noreferrer">Update to cardano-api-8.24</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/323" target="_blank" rel="noopener noreferrer">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/322" target="_blank" rel="noopener noreferrer">create-poll, answer-poll, verify-poll: move to 'babbage governance' block</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/320" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/319" target="_blank" rel="noopener noreferrer">Make <code>transaction view</code> emit JSON</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/318" target="_blank" rel="noopener noreferrer">Tidy up query command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/317" target="_blank" rel="noopener noreferrer">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/316" target="_blank" rel="noopener noreferrer">Add DRep Retirement Certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/310" target="_blank" rel="noopener noreferrer">Update to cardano api 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/309" target="_blank" rel="noopener noreferrer">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/307" target="_blank" rel="noopener noreferrer">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/306" target="_blank" rel="noopener noreferrer">Add certs to txbody of Conway transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/305" target="_blank" rel="noopener noreferrer">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/304" target="_blank" rel="noopener noreferrer">Add BabbageEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/303" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.2.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/300" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/299" target="_blank" rel="noopener noreferrer">Reduce constraint usage with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/297" target="_blank" rel="noopener noreferrer">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/296" target="_blank" rel="noopener noreferrer">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/294" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/293" target="_blank" rel="noopener noreferrer">Require conway onwards for voting</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/292" target="_blank" rel="noopener noreferrer">Add witness committee cold key</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/291" target="_blank" rel="noopener noreferrer">Fix CHaP failure due to haddock issue</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/290" target="_blank" rel="noopener noreferrer">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/289" target="_blank" rel="noopener noreferrer">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/288" target="_blank" rel="noopener noreferrer">Release 8.24.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/287" target="_blank" rel="noopener noreferrer">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/286" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/284" target="_blank" rel="noopener noreferrer">conway drep registration: expose ledger anchor parameter</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/282" target="_blank" rel="noopener noreferrer">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/281" target="_blank" rel="noopener noreferrer">Rename eon functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/280" target="_blank" rel="noopener noreferrer">New <code>AnyEraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/279" target="_blank" rel="noopener noreferrer">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/278" target="_blank" rel="noopener noreferrer">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/277" target="_blank" rel="noopener noreferrer">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/276" target="_blank" rel="noopener noreferrer">Release 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/275" target="_blank" rel="noopener noreferrer">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5497" target="_blank" rel="noopener noreferrer">bump cardano-api to 8.25.2</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5491" target="_blank" rel="noopener noreferrer">Remove unused code in cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-06-hydra</link>
+            <guid>2023-10-06-hydra</guid>
+            <pubDate>Fri, 06 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Release <a href="https://github.com/input-output-hk/hydra/releases/tag/0.13.0" target="_blank" rel="noopener noreferrer">0.13.0</a></li><li>Published vulnerability reports <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Merged network resilience work part I <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href="https://github.com/input-output-hk/hydra/pull/1095" target="_blank" rel="noopener noreferrer">#1095</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete Aiken commit validator script <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete Kupo integration <a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Brick upgrade on TUI <a href="https://github.com/input-output-hk/hydra/pull/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-06-performance-and-tracing</link>
+            <guid>2023-10-06-performance-and-tracing</guid>
+            <pubDate>Fri, 06 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We've developed strategies for future benchmarks of PlutusV3 and UTxO-HD's on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the
+performance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results
+show all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The
+feedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Benchmarking UTxO-HD's on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,
+we'd like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service
+receiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is
+more performance critical, the receiving service must still minimize its resource footprint. Moreover, it can
+generate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster's topology. We repeated
+the same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-04-consensus</link>
+            <guid>2023-10-04-consensus</guid>
+            <pubDate>Wed, 04 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.
+We also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/392" target="_blank" rel="noopener noreferrer">392</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/366" target="_blank" rel="noopener noreferrer">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/384" target="_blank" rel="noopener noreferrer">384</a>).</li><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/369" target="_blank" rel="noopener noreferrer">369</a>).</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-04-mithril</link>
+            <guid>2023-10-04-mithril</guid>
+            <pubDate>Wed, 04 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1185" target="_blank" rel="noopener noreferrer">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href="https://github.com/input-output-hk/mithril/issues/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href="https://github.com/input-output-hk/mithril/issues/1265" target="_blank" rel="noopener noreferrer">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href="https://github.com/input-output-hk/mithril/issues/1277" target="_blank" rel="noopener noreferrer">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1274" target="_blank" rel="noopener noreferrer">#1274</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-10-02-network</link>
+            <guid>2023-10-02-network</guid>
+            <pubDate>Mon, 02 Oct 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 45]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-45">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22" target="_blank" rel="noopener noreferrer">sprint 45</a><a class="hash-link" href="#high-level-overview-of-sprint-45" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we
+started investigating where it comes from.  Currently, we see that
+<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running
+in isolation with a simple <code>ping-pong</code> protocol, so the regression might be in
+the new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>
+See <a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosimpor">IOSimPOR<a class="hash-link" href="#iosimpor" title="Direct link to heading">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We'd like to thank Prof. John Hughes
+(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the
+debugging similar problems in the future easier.</p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Technical Details on IOSim refactoring</summary><div><div class="collapsibleContent_i85q">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we'd need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim">IOSim<a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of
+the public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is
+a work in progress, <a href="https://github.com/input-output-hk/io-sim/issues/114" target="_blank" rel="noopener noreferrer">io-sim#114</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-newtork-service-assurance">Cardano Newtork Service Assurance<a class="hash-link" href="#cardano-newtork-service-assurance" title="Direct link to heading">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation
+was updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were
+made.</li><li>Galois has started the design for adding a CNSA analysis for "fetched bytes
+over time while node is syncing".</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, we've seen increase in P2P adoption.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png" width="2668" height="1576" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png" width="2674" height="1580" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the
+PR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4676" target="_blank" rel="noopener noreferrer">ouroboros-network#4676</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-29-goedel</link>
+            <guid>2023-09-29-goedel</guid>
+            <pubDate>Fri, 29 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and testing the
+performance analysis tool</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of
+programs with local environments via synchronous channels</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-29-hydra</link>
+            <guid>2023-09-29-hydra</guid>
+            <pubDate>Fri, 29 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability
+network layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on
+how to handle security vulnerability within Hydra, and in particular how to
+handle so-called "Silent fixes".</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Adr/network reliability <a href="https://github.com/input-output-hk/hydra/pull/1082" target="_blank" rel="noopener noreferrer">#1082</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-29-ledger</link>
+            <guid>2023-09-29-ledger</guid>
+            <pubDate>Fri, 29 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been
+fully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep's expiry is prevented by delaying the expiry for all DReps whenever there are no
+proposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to
+allow for individual Plutus language version updates, rather than requiring a complete
+replacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some
+optimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for
+ledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul
+of functionality for initial funds and staking injection whenever node starts up in
+Conway, while bypassing all previous eras.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3729" target="_blank" rel="noopener noreferrer">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3739" target="_blank" rel="noopener noreferrer">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3743" target="_blank" rel="noopener noreferrer">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3746" target="_blank" rel="noopener noreferrer">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3737" target="_blank" rel="noopener noreferrer">pull-3737</a> - Implement EraTransition</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3749" target="_blank" rel="noopener noreferrer">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3748" target="_blank" rel="noopener noreferrer">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3745" target="_blank" rel="noopener noreferrer">pull-3745</a> - Constitutional Committee Ratification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3763" target="_blank" rel="noopener noreferrer">pull-3763</a> - Plutus interface improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3771" target="_blank" rel="noopener noreferrer">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3766" target="_blank" rel="noopener noreferrer">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3765" target="_blank" rel="noopener noreferrer">pull-3765</a> - Improve native script handling</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3747" target="_blank" rel="noopener noreferrer">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3758" target="_blank" rel="noopener noreferrer">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3754" target="_blank" rel="noopener noreferrer">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="releasing">Releasing<a class="hash-link" href="#releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3742" target="_blank" rel="noopener noreferrer">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3744" target="_blank" rel="noopener noreferrer">pull-3744</a> - Changelog 8.4</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3752" target="_blank" rel="noopener noreferrer">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3753" target="_blank" rel="noopener noreferrer">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3760" target="_blank" rel="noopener noreferrer">pull-3760</a> - Fixup issues for release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3764" target="_blank" rel="noopener noreferrer">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3734" target="_blank" rel="noopener noreferrer">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3735" target="_blank" rel="noopener noreferrer">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3728" target="_blank" rel="noopener noreferrer">pull-3728</a> - STS tests based on constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3714" target="_blank" rel="noopener noreferrer">pull-3714</a> - Implement the remaining upgradable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3733" target="_blank" rel="noopener noreferrer">pull-3733</a> - Add some unit tests for Conway features</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3762" target="_blank" rel="noopener noreferrer">pull-3762</a> - Update CDDL for praos headers.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-29-sre</link>
+            <guid>2023-09-29-sre</guid>
+            <pubDate>Fri, 29 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">8.4.0-pre</a>.</li><li>The use of cardano-node <a href="https://hub.docker.com/r/inputoutput/cardano-node" target="_blank" rel="noopener noreferrer">docker hub</a> will be deprecated in preference of <a href="https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node" target="_blank" rel="noopener noreferrer">GHCR</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href="https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href="https://github.com/input-output-hk/cardano-parts/pull/14" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/2" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href="https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href="https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-27-mithril</link>
+            <guid>2023-09-27-mithril</guid>
+            <pubDate>Wed, 27 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2337.0" target="_blank" rel="noopener noreferrer"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href="https://mithril.network/doc/adr/6" target="_blank" rel="noopener noreferrer">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1207" target="_blank" rel="noopener noreferrer">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-26-node-cli-api</link>
+            <guid>2023-09-26-node-cli-api</guid>
+            <pubDate>Tue, 26 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-09-13 - 2023-09-26</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/302" target="_blank" rel="noopener noreferrer">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/298" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/295" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/292" target="_blank" rel="noopener noreferrer">cardano-cli: add governance create-info command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/287" target="_blank" rel="noopener noreferrer">Release 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/286" target="_blank" rel="noopener noreferrer">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/284" target="_blank" rel="noopener noreferrer">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/283" target="_blank" rel="noopener noreferrer">Update cardano-api to 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/282" target="_blank" rel="noopener noreferrer">Remove unused governance-related code</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/281" target="_blank" rel="noopener noreferrer">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/280" target="_blank" rel="noopener noreferrer">Remove redundant conversions in JSON friendly instances </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/279" target="_blank" rel="noopener noreferrer">Regularise era based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/277" target="_blank" rel="noopener noreferrer">Simplify era handling</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/276" target="_blank" rel="noopener noreferrer">Remove <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/275" target="_blank" rel="noopener noreferrer">Era-based <code>stake-pool</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/274" target="_blank" rel="noopener noreferrer">Fix git revision in <code>version</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/273" target="_blank" rel="noopener noreferrer">cardano-cli-8.8.0.0</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/265" target="_blank" rel="noopener noreferrer">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/264" target="_blank" rel="noopener noreferrer">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/262" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/256" target="_blank" rel="noopener noreferrer">Delete unused eon constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/255" target="_blank" rel="noopener noreferrer">Export ByronEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/254" target="_blank" rel="noopener noreferrer">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/250" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/249" target="_blank" rel="noopener noreferrer">Add JSON instance for Hash GenesisKey </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/248" target="_blank" rel="noopener noreferrer">Support more ledger constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/247" target="_blank" rel="noopener noreferrer">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/246" target="_blank" rel="noopener noreferrer">Release 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/245" target="_blank" rel="noopener noreferrer">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/244" target="_blank" rel="noopener noreferrer">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/243" target="_blank" rel="noopener noreferrer">Fix typos in some deserialization error messages</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/240" target="_blank" rel="noopener noreferrer">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5480" target="_blank" rel="noopener noreferrer">Trace Configuration Trace Message Enhancement</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5466" target="_blank" rel="noopener noreferrer">cardano-node: reduce orphan instances</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5471" target="_blank" rel="noopener noreferrer">Update to cardano-cli 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-22-hydra</link>
+            <guid>2023-09-22-hydra</guid>
+            <pubDate>Fri, 22 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in
+collaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability
+and identified concrete steps to enhance network resiliency in feature
+items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a>, and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a>.
+Additionally, they contributed the aiken-mode editor integration to the
+aiken-lang organization, updated dependencies to utilize cardano-api
+8.20, and published the Hydra security advisory CVE-2023-42806 with a
+workaround available for users.</p><p>These efforts demonstrate the team\'s commitment to project improvement,
+security, and open-source community collaboration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command
+<a href="https://github.com/input-output-hk/hydra/pull/1077" target="_blank" rel="noopener noreferrer">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested
+feature items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a></li><li>Moved <a href="https://github.com/aiken-lang/aiken-mode" target="_blank" rel="noopener noreferrer">aiken-mode</a> (created by SN)
+to aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20
+<a href="https://github.com/input-output-hk/hydra/pull/1075" target="_blank" rel="noopener noreferrer">#1075</a></li><li>Published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(workaround available)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish "network resilience to disconnects"
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Finish kupo integration with hydra
+<a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-22-performance-and-tracing</link>
+            <guid>2023-09-22-performance-and-tracing</guid>
+            <pubDate>Fri, 22 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We've been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We're currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we've been equipping both that and the existing benchmarking
+backend with means to measure and document network latency for each run. Furthermore we've implemented means to
+capture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences
+in the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we're running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We've concluded that baseline profile runs aren't directly comparable between the two, so we decided
+to compare standard deviations instead to validate the measurements from nomad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline
+have been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we've looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document
+which runtime configuration the node arrived eventually. We're working on providing a machine-readable JSON/YAML
+trace message for that purpose.  </p><p>This will facilitate hot-reloading a node's tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it
+produces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an
+impact on our measurements, as we'd be basically using two different instruments to take them.  </p><p>Along the way we've already been successful in eliminating some possible confounders that had been introduced by the nomad service
+or the slightly different system architecture of the new cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-team-member">New team member<a class="hash-link" href="#new-team-member" title="Direct link to heading">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he's an excellent fit for our existing team.
+So I'm very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-20-consensus</link>
+            <guid>2023-09-20-consensus</guid>
+            <pubDate>Wed, 20 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.
+We are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.
+On the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.
+We also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/349" target="_blank" rel="noopener noreferrer">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node's baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.
+We are now drafting the final self-contained argument. (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4157" target="_blank" rel="noopener noreferrer">4157</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/339" target="_blank" rel="noopener noreferrer">339</a>).
+A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/340" target="_blank" rel="noopener noreferrer">340</a>, <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/354" target="_blank" rel="noopener noreferrer">354</a>, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/355" target="_blank" rel="noopener noreferrer">355</a>)
+However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/345" target="_blank" rel="noopener noreferrer">345</a> and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/346" target="_blank" rel="noopener noreferrer">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-20-mithril</link>
+            <guid>2023-09-20-mithril</guid>
+            <pubDate>Wed, 20 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href="https://github.com/input-output-hk/mithril/issues/1200" target="_blank" rel="noopener noreferrer">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1238" target="_blank" rel="noopener noreferrer">#1238</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-15-goedel</link>
+            <guid>2023-09-15-goedel</guid>
+            <pubDate>Fri, 15 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-15-hydra</link>
+            <guid>2023-09-15-hydra</guid>
+            <pubDate>Fri, 15 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in
+Nantes, France. They used this oportunity to meet fellow mithril team and spend
+some time together to hack on some code and, as always, reflect on the past work
+and find optimal path forward for both projects. They also fixed a bug that
+caused hydra-node to crash when querying L1, worked on a new network resillience
+proof-of-concept and accepted a new ADR related to stateless transaction
+observation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href="https://github.com/input-output-hk/hydra/pull/1048" target="_blank" rel="noopener noreferrer">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href="https://github.com/input-output-hk/hydra/pull/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Collected experimental CI findings <a href="https://github.com/input-output-hk/hydra/pull/1070" target="_blank" rel="noopener noreferrer">#1070</a></li><li>Propose first POC for the network resilience <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete hydra-support in kupo <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">kupo#117</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-15-ledger</link>
+            <guid>2023-09-15-ledger</guid>
+            <pubDate>Fri, 15 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team's focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial
+version of Constitution. Priority in which Governance Action are now enacted matches the
+specification. DRep's deposits are now properly accounted for. Governance actions that are
+not allowed to be voted on by Stake Pool operators and Constitutional Committee members
+are prevented by transaction submission failure, rather than simply being ignored. There
+was a few important CDDL fixes as well as a lot of new round trip serialization
+tests. Constraint based testing framework has also received a lot of improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3681" target="_blank" rel="noopener noreferrer">pull-3681</a> - Conway Genesis additions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3690" target="_blank" rel="noopener noreferrer">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3705" target="_blank" rel="noopener noreferrer">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3700" target="_blank" rel="noopener noreferrer">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3704" target="_blank" rel="noopener noreferrer">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3698" target="_blank" rel="noopener noreferrer">pull-3698</a> - Reordering of governance actions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3712" target="_blank" rel="noopener noreferrer">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3716" target="_blank" rel="noopener noreferrer">pull-3716</a> - Abstract threshold calculation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3725" target="_blank" rel="noopener noreferrer">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3718" target="_blank" rel="noopener noreferrer">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3721" target="_blank" rel="noopener noreferrer">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3629" target="_blank" rel="noopener noreferrer">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3680" target="_blank" rel="noopener noreferrer">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3708" target="_blank" rel="noopener noreferrer">pull-3708</a> - Post release changes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3730" target="_blank" rel="noopener noreferrer">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3697" target="_blank" rel="noopener noreferrer">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3709" target="_blank" rel="noopener noreferrer">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3726" target="_blank" rel="noopener noreferrer">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3713" target="_blank" rel="noopener noreferrer">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-15-network</link>
+            <guid>2023-09-15-network</guid>
+            <pubDate>Fri, 15 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 44]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-44">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22" target="_blank" rel="noopener noreferrer">sprint 44</a><a class="hash-link" href="#high-level-overview-of-sprint-44" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we
+identified a possible improvement to bootstrap peers. A more detailed
+description is available <a href="https://github.com/input-output-hk/ouroboros-network/issues/4675" target="_blank" rel="noopener noreferrer">here</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-840-release">Cardano-Node-8.4.0 Release<a class="hash-link" href="#cardano-node-840-release" title="Direct link to heading">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final
+integration <a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">PR</a> is currently being merged. We published
+new versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with
+<code>cardano-node</code>.  This is towards our goal which we planned for the next
+quarter.  The identified tasks are to fix breaking tests, and then measure and
+address possible performance regressions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4663" target="_blank" rel="noopener noreferrer">ouroboros-network-#4663</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4664" target="_blank" rel="noopener noreferrer">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4660" target="_blank" rel="noopener noreferrer">ouroboros-network-#4660</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning
+the number of SPOs or stakes, although the number of overall P2P relays has
+increased.  Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>) is investigating
+this issue.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png" width="2014" height="1586" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png" width="2016" height="1576" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a> and their mainnet
+monitoring infrastructure.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-15-sre</link>
+            <guid>2023-09-15-sre</guid>
+            <pubDate>Fri, 15 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href="https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108" target="_blank" rel="noopener noreferrer">here</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href="https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href="https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710" target="_blank" rel="noopener noreferrer">cardano-ops-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href="https://github.com/input-output-hk/cardano-parts/pull/10" target="_blank" rel="noopener noreferrer">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href="https://github.com/input-output-hk/cardano-parts/pull/11" target="_blank" rel="noopener noreferrer">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href="https://github.com/input-output-hk/cardano-parts/pull/12" target="_blank" rel="noopener noreferrer">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href="https://github.com/input-output-hk/cardano-parts/pull/13" target="_blank" rel="noopener noreferrer">cardano-parts-pull-13</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href="https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/1" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href="https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href="https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-14-db-sync</link>
+            <guid>2023-09-14-db-sync</guid>
+            <pubDate>Thu, 14 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also
+the team has ran a number of benchmarks and tests for the new options/flavours of DBSync
+and prepared a blogpost which summorises them, for downstream components.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1498" target="_blank" rel="noopener noreferrer">#1498</a></li><li>Simplifications of new feautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1496" target="_blank" rel="noopener noreferrer">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds
+tests for them
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>CI fixes
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1494" target="_blank" rel="noopener noreferrer">#1494</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1491" target="_blank" rel="noopener noreferrer">#1491</a></li><li>Prepared a blogpost about different DBSync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf" target="_blank" rel="noopener noreferrer">blog</a></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-12-node-cli-api</link>
+            <guid>2023-09-12-node-cli-api</guid>
+            <pubDate>Tue, 12 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-08-30 - 2023-09-12</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Release of <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.
+This release completes <a href="https://sancho.network/get-started#sanchonet-feature-rollout" target="_blank" rel="noopener noreferrer">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming
+<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top
+of that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.
+Removing <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/261" target="_blank" rel="noopener noreferrer">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/257" target="_blank" rel="noopener noreferrer">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/260" target="_blank" rel="noopener noreferrer">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/256" target="_blank" rel="noopener noreferrer">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/254" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/250" target="_blank" rel="noopener noreferrer">#221 Update description fields on delegation certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/249" target="_blank" rel="noopener noreferrer">Update error message for eras mismatch between node and cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/248" target="_blank" rel="noopener noreferrer">Era based <code>address</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/246" target="_blank" rel="noopener noreferrer">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/245" target="_blank" rel="noopener noreferrer">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/244" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/243" target="_blank" rel="noopener noreferrer">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/242" target="_blank" rel="noopener noreferrer">Move <code>node</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/241" target="_blank" rel="noopener noreferrer">Era-based <code>stake-address</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/240" target="_blank" rel="noopener noreferrer">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/239" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from errors</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/238" target="_blank" rel="noopener noreferrer">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/237" target="_blank" rel="noopener noreferrer">Move <code>key</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/236" target="_blank" rel="noopener noreferrer">Move <code>query</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/235" target="_blank" rel="noopener noreferrer">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/234" target="_blank" rel="noopener noreferrer">Move <code>pool</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/233" target="_blank" rel="noopener noreferrer">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/232" target="_blank" rel="noopener noreferrer">Move <code>address</code> run command implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/231" target="_blank" rel="noopener noreferrer">Delete legacy <code>conway governance</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/230" target="_blank" rel="noopener noreferrer">Era sensitive transaction run commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/229" target="_blank" rel="noopener noreferrer">Move transaction command code into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/228" target="_blank" rel="noopener noreferrer">Fix query <code>key-period-info</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/227" target="_blank" rel="noopener noreferrer">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/225" target="_blank" rel="noopener noreferrer">Prefix complex delegation certificate option</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/233" target="_blank" rel="noopener noreferrer">Fix test constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/231" target="_blank" rel="noopener noreferrer">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/230" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/228" target="_blank" rel="noopener noreferrer">Release 8.19.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/226" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/225" target="_blank" rel="noopener noreferrer">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/224" target="_blank" rel="noopener noreferrer">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/222" target="_blank" rel="noopener noreferrer">Release 8.18.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/221" target="_blank" rel="noopener noreferrer">Fix exception when executing drep queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5460" target="_blank" rel="noopener noreferrer">Fix deadlock issue with stdout tracer in tx-generator</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5453" target="_blank" rel="noopener noreferrer">nix: workbench tracing configuration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-08-hydra</link>
+            <guid>2023-09-08-hydra</guid>
+            <pubDate>Fri, 08 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline
+datums. They simplified the chain layer by refactoring how the chain state is
+persisted. Updates to the Hydra tutorial were completed, including CI workflows
+to keep it up-to-date. The team engaged in discussions with researchers about
+incremental commits &amp; decommits, and drafted an architectural decision record
+for a resource-based API. They also explored simpler solutions for the upcoming
+network resilience feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Support InlineScriptDatum in commit
+<a href="https://github.com/input-output-hk/hydra/issues/1043" target="_blank" rel="noopener noreferrer">#1043</a></li><li>Refactored chain state persistency
+<a href="https://github.com/input-output-hk/hydra/pull/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)
+<a href="https://github.com/input-output-hk/hydra/issues/997" target="_blank" rel="noopener noreferrer">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \"Network
+resilience problem\" to find a KISS solution for
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Drafted and discussed incremental de-/commit features within team
+and with researchers
+<a href="https://github.com/input-output-hk/hydra/issues/199" target="_blank" rel="noopener noreferrer">#199</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Created ADR for a resource based overhaul of the API
+<a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already
+understood)</li><li>An ADR for improving tx construction &amp; observation to not need chain
+state</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-07-mithril</link>
+            <guid>2023-09-07-mithril</guid>
+            <pubDate>Thu, 07 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2335.0" target="_blank" rel="noopener noreferrer"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href="https://github.com/input-output-hk/mithril/issues/1155" target="_blank" rel="noopener noreferrer">#1155</a></li><li>Completed the issue <code>Provide progress information with '--json' option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/948" target="_blank" rel="noopener noreferrer">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href="https://github.com/input-output-hk/mithril/issues/947" target="_blank" rel="noopener noreferrer">#947</a></li><li>Completed the issue <code>Post deployment 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href="https://github.com/input-output-hk/mithril/issues/1160" target="_blank" rel="noopener noreferrer">#1160</a></li><li>Completed the issue <code>Update 'ed25519-dalek' to '2.0.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/1188" target="_blank" rel="noopener noreferrer">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href="https://github.com/input-output-hk/mithril/issues/1151" target="_blank" rel="noopener noreferrer">#1151</a></li><li>Completed the issue <code>Fix end to end 'wait_for_the_expected_time' test</code> <a href="https://github.com/input-output-hk/mithril/issues/1191" target="_blank" rel="noopener noreferrer">#1191</a></li><li>Completed the issue <code>Fix docs 'git checkout' command</code> <a href="https://github.com/input-output-hk/mithril/issues/1174" target="_blank" rel="noopener noreferrer">#1174</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-07-performance-and-tracing</link>
+            <guid>2023-09-07-performance-and-tracing</guid>
+            <pubDate>Thu, 07 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We're productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node's traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation
+operation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point
+in time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.
+This feature enables feedback on when tracer implementation details in some component might have changed. It's also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we've created a fine-grained configuration of the new system that caters to benchmarking's need of very many
+detailed trace messages. It's aimed at mirroring the same amount of trace messages, and information, we're seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we're using it in production mode to comparatively benchmark both tracing systems after merging past month's optimizations - which is the
+first real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-06-consensus</link>
+            <guid>2023-09-06-consensus</guid>
+            <pubDate>Wed, 06 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.
+On the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.
+The Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203" target="_blank" rel="noopener noreferrer">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418" target="_blank" rel="noopener noreferrer">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3099" target="_blank" rel="noopener noreferrer">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/323" target="_blank" rel="noopener noreferrer">#323</a>).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3491" target="_blank" rel="noopener noreferrer">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/91" target="_blank" rel="noopener noreferrer">#91</a>.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-01-goedel</link>
+            <guid>2023-09-01-goedel</guid>
+            <pubDate>Fri, 01 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the
+formal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-01-hydra</link>
+            <guid>2023-09-01-hydra</guid>
+            <pubDate>Fri, 01 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network
+layer and have the first draft document related to needed design. They also
+improved the user experience by allowing a commit using inline datums.
+Discussed the off-chain governance with researchers and improved internal model
+tests. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a clear understanding of the changes we need for the "Improve network resiliency" feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-01-ledger</link>
+            <guid>2023-09-01-ledger</guid>
+            <pubDate>Fri, 01 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3659" target="_blank" rel="noopener noreferrer">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3637" target="_blank" rel="noopener noreferrer">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3651" target="_blank" rel="noopener noreferrer">pull-3651</a> - Inactive DReps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3664" target="_blank" rel="noopener noreferrer">pull-3664</a> - Track proposal expiry</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3668" target="_blank" rel="noopener noreferrer">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3669" target="_blank" rel="noopener noreferrer">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3676" target="_blank" rel="noopener noreferrer">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3635" target="_blank" rel="noopener noreferrer">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3670" target="_blank" rel="noopener noreferrer">pull-3670</a> - Validate previously enacted govAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3694" target="_blank" rel="noopener noreferrer">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3674" target="_blank" rel="noopener noreferrer">pull-3674</a> - Added RATIFY thresholds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3684" target="_blank" rel="noopener noreferrer">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3688" target="_blank" rel="noopener noreferrer">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3677" target="_blank" rel="noopener noreferrer">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3686" target="_blank" rel="noopener noreferrer">pull-3686</a> - Post patch release fixup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3695" target="_blank" rel="noopener noreferrer">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3683" target="_blank" rel="noopener noreferrer">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3662" target="_blank" rel="noopener noreferrer">pull-3662</a> - Equality on raw types</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-01-network</link>
+            <guid>2023-09-01-network</guid>
+            <pubDate>Fri, 01 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 43]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-43">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22" target="_blank" rel="noopener noreferrer">sprint 43</a><a class="hash-link" href="#high-level-overview-of-sprint-43" title="Direct link to heading">​</a></h2><p>In this sprint, we received contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> &amp; <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>.  Karl Knutsson
+(<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts
+and our <code>WireShark</code> dissector.  While the <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> developers focused on
+addressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to
+be run natively on all platforms (these tests mostly contain tests that
+require <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We
+run <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,
+<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.
+The <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on
+GitHub Actions runners. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4653" target="_blank" rel="noopener noreferrer">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>
+version.  So far he integrated <code>cardano-ledger-conway-1.8</code> and
+<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and
+<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,
+<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released
+to <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered
+by Karl from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>). More details are included below.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-p2p-addoption">Progress on P2P addoption<a class="hash-link" href="#progress-on-p2p-addoption" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="spo-relays">SPO relays<a class="hash-link" href="#spo-relays" title="Direct link to heading">​</a></h4><p>There are currently ~2000 relays running P2P
+enabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On
+16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil
+Ada.</p><p><img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png" width="2034" height="1588" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png" width="2038" height="1594" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> and their mainnet monitoring
+infrastructure.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iog-relays">IOG relays<a class="hash-link" href="#iog-relays" title="Direct link to heading">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all
+IOG relays will be running P2P.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>In this sprint, we got a few contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>
+miniprotocols.  These timeouts help a node remove idle connections from the
+responder (server) side <a href="https://github.com/input-output-hk/ouroboros-network/pull/4648" target="_blank" rel="noopener noreferrer">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>.</li></ul><p><a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been working on refactoring the main entry function of P2P <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4652" target="_blank" rel="noopener noreferrer">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It's supposed to relay the
+remote value, but instead, it returns the local value. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4642" target="_blank" rel="noopener noreferrer">ouroboros-network-#4642</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="async-demotion-test-fix">Async Demotion Test Fix<a class="hash-link" href="#async-demotion-test-fix" title="Direct link to heading">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of
+the test itself rather than a bug in the connection manager. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4655" target="_blank" rel="noopener noreferrer">ouroboros-network-#4655</a></li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-09-01-sre</link>
+            <guid>2023-09-01-sre</guid>
+            <pubDate>Fri, 01 Sep 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a> repository started -- "Content Addressed Packages"<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don't have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Content addressed packages -- new repo: <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Flake devShell module improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/4" target="_blank" rel="noopener noreferrer">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/5" target="_blank" rel="noopener noreferrer">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/6" target="_blank" rel="noopener noreferrer">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href="https://github.com/input-output-hk/cardano-parts/pull/7" target="_blank" rel="noopener noreferrer">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href="https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module" target="_blank" rel="noopener noreferrer">cardano-parts-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href="https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href="https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Sanchonet demonstration repository: <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-29-node-cli-api</link>
+            <guid>2023-08-29-node-cli-api</guid>
+            <pubDate>Tue, 29 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-08-16 - 2023-08-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger's PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">- GetGovState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepStakeDistr</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetCommitteeState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetConstitution</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/179" target="_blank" rel="noopener noreferrer">Add goverance info action creation to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/176" target="_blank" rel="noopener noreferrer">Add create-no-confidence command to era based cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/175" target="_blank" rel="noopener noreferrer">Add create-new-committee command to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/204" target="_blank" rel="noopener noreferrer">Enable <code>--drep-script-hash</code> option</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/211" target="_blank" rel="noopener noreferrer">Remove <code>experimental</code> subcommand</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/210" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/194" target="_blank" rel="noopener noreferrer">New <code>governance drep id</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/189" target="_blank" rel="noopener noreferrer">Add <code>governance query</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/187" target="_blank" rel="noopener noreferrer">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/203" target="_blank" rel="noopener noreferrer">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/201" target="_blank" rel="noopener noreferrer">Release 8.6.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/195" target="_blank" rel="noopener noreferrer">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/193" target="_blank" rel="noopener noreferrer">Add test for conway governance action create-constitution</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/192" target="_blank" rel="noopener noreferrer">Move legacy errors out of legacy command structure modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/191" target="_blank" rel="noopener noreferrer">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/188" target="_blank" rel="noopener noreferrer">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/186" target="_blank" rel="noopener noreferrer">Move some error types</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/185" target="_blank" rel="noopener noreferrer">Delete unused module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/183" target="_blank" rel="noopener noreferrer">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/182" target="_blank" rel="noopener noreferrer">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/180" target="_blank" rel="noopener noreferrer">Remove example era-based parsers we don't need anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/174" target="_blank" rel="noopener noreferrer">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/216" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/214" target="_blank" rel="noopener noreferrer">Replace ProtocolParameters usage with ledger's PParams</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/210" target="_blank" rel="noopener noreferrer">Use injective type families to improve type inference</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/209" target="_blank" rel="noopener noreferrer">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/208" target="_blank" rel="noopener noreferrer">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/207" target="_blank" rel="noopener noreferrer">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/206" target="_blank" rel="noopener noreferrer">Expose ledger lenses for governance types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/205" target="_blank" rel="noopener noreferrer">New version cardano-api-8.16.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/204" target="_blank" rel="noopener noreferrer">Add <code>VotingProcedures</code> type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/202" target="_blank" rel="noopener noreferrer">Release 8.16.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/200" target="_blank" rel="noopener noreferrer">Update createAnchor to use hashAnchorData</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/197" target="_blank" rel="noopener noreferrer">Release 8.15.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/196" target="_blank" rel="noopener noreferrer">Add consensus governance queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-28-mithril</link>
+            <guid>2023-08-28-mithril</guid>
+            <pubDate>Mon, 28 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1106" target="_blank" rel="noopener noreferrer">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href="https://github.com/input-output-hk/mithril/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Completed the issue <code>Use the '/signers/registered' route to verify if a signer is registered</code> <a href="https://github.com/input-output-hk/mithril/issues/1152" target="_blank" rel="noopener noreferrer">#1152</a></li><li>Worked on the issue <code>Provide progress information with '--json' option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Worked on the issue <code>Use 'zstandard' compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-25-hydra</link>
+            <guid>2023-08-25-hydra</guid>
+            <pubDate>Fri, 25 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which
+continously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at
+RareEvo workshop as an educational initiative for the community.
+Additionally, the team updated the Hydra demo and tutorial to include Mithril
+and latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve
+<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a
+bad user experience.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>New ADR for “Resourced based API” <a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a poc on network resilience working <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/931" target="_blank" rel="noopener noreferrer">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a>: "Close transaction dropped from cardano-node"</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-24-performance-and-tracing</link>
+            <guid>2023-08-24-performance-and-tracing</guid>
+            <pubDate>Thu, 24 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we're developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We're performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We've performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we're working on respective integrations on both those paths.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held
+in memory, which wouldn't fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell's native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We're splitting out everything that's verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We're able to perform full runs on the new hardware cluster
+and porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-23-consensus</link>
+            <guid>2023-08-23-consensus</guid>
+            <pubDate>Wed, 23 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.
+On the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/314" target="_blank" rel="noopener noreferrer">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/305" target="_blank" rel="noopener noreferrer">#305</a>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href="https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href="https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/275" target="_blank" rel="noopener noreferrer">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/284" target="_blank" rel="noopener noreferrer">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/283" target="_blank" rel="noopener noreferrer">#283</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/301" target="_blank" rel="noopener noreferrer">#301</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/304" target="_blank" rel="noopener noreferrer">#304</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/308" target="_blank" rel="noopener noreferrer">#308</a></li></ul></li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-18-goedel</link>
+            <guid>2023-08-18-goedel</guid>
+            <pubDate>Fri, 18 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of
+programs to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)
+mini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part
+of 4th year masters course on distributed systemsby colleagues at UC
+Louvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part
+of a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and
+wrote property tests for its algebraic laws</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-18-hydra</link>
+            <guid>2023-08-18-hydra</guid>
+            <pubDate>Fri, 18 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that
+brings support for cardano-node 8.1.2, along with performance enhancements and
+various API improvements. Additionally, the team successfully onboarded a new
+contributor who is now actively participating in operating a Hydra Head. They
+took part in a meeting of the Intersect open source committee and prepared the
+Hydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href="https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true" target="_blank" rel="noopener noreferrer">using this
+form</a>.
+We hope to make it possible to follow along on-line as well and will announce
+details on the Hydra announcements channel on the <a href="https://discord.gg/Qq5vNTg9PT" target="_blank" rel="noopener noreferrer">IOG discord
+server</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance
+and several API improvements. <a href="https://github.com/input-output-hk/hydra/releases/tag/0.12.0" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-18-ledger</link>
+            <guid>2023-08-18-ledger</guid>
+            <pubDate>Fri, 18 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting
+for DRep and Stake Pool Operators is now at the state that can be used by downstream
+components. Addition of new ledger state queries makes it possible to verify changes to
+the governance state, such as placement of votes, submission of governance proposals,
+inspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the
+ability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3577" target="_blank" rel="noopener noreferrer">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3609" target="_blank" rel="noopener noreferrer">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3604" target="_blank" rel="noopener noreferrer">pull-3604</a> - README: update CIP-1694 link</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3616" target="_blank" rel="noopener noreferrer">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3599" target="_blank" rel="noopener noreferrer">pull-3599</a> - Add governance action well-formedness check</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3607" target="_blank" rel="noopener noreferrer">pull-3607</a> - Rename governance to gov</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3601" target="_blank" rel="noopener noreferrer">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3615" target="_blank" rel="noopener noreferrer">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3596" target="_blank" rel="noopener noreferrer">pull-3596</a> - Upgradeable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3625" target="_blank" rel="noopener noreferrer">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3592" target="_blank" rel="noopener noreferrer">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a> - Treasury donations</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3633" target="_blank" rel="noopener noreferrer">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3634" target="_blank" rel="noopener noreferrer">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3630" target="_blank" rel="noopener noreferrer">pull-3630</a> - Implemented DRep refreshing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3640" target="_blank" rel="noopener noreferrer">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3636" target="_blank" rel="noopener noreferrer">pull-3636</a> - Implement DRep ratification with an "always passing"; threshold</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3648" target="_blank" rel="noopener noreferrer">pull-3648</a> - Governance queries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3650" target="_blank" rel="noopener noreferrer">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3658" target="_blank" rel="noopener noreferrer">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3628" target="_blank" rel="noopener noreferrer">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3619" target="_blank" rel="noopener noreferrer">pull-3619</a> - Disabled a broken test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3660" target="_blank" rel="noopener noreferrer">pull-3660</a> - Fix bounds and versions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3661" target="_blank" rel="noopener noreferrer">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-18-network</link>
+            <guid>2023-08-18-network</guid>
+            <pubDate>Fri, 18 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 42]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-42">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22" target="_blank" rel="noopener noreferrer">sprint 42</a><a class="hash-link" href="#high-level-overview-of-sprint-42" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version
+<code>0.9.0.0</code>) which includes <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">big ledger peers feature</a>.
+This is the primary peer selection mechanism to defend against eclipses.   We
+also prepared a PR to updated <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/165" target="_blank" rel="noopener noreferrer"><code>ouroboros-cosnensus</code></a>
+and <a href="https://github.com/input-output-hk/ekg-forward/pull/30" target="_blank" rel="noopener noreferrer"><code>ekg-forward</code></a> packages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cddl-specs-for-protocol-codecs">CDDL specs for protocol codecs<a class="hash-link" href="#cddl-specs-for-protocol-codecs" title="Direct link to heading">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation
+which is highly polymorphic.  <code>cddl</code> doesn't have the notion of polymorphism,
+but has <code>any</code> which can generate any valid cbor term.  We matched it with an
+<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.
+This simplified the specifications and made it easier to understand which parts
+are defined in the spec, and which parts are left unspecified.  See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4595" target="_blank" rel="noopener noreferrer">ouroboros-network#4595</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network-framework-api-changes">Ouroboros-Network-Framework API changes<a class="hash-link" href="#ouroboros-network-framework-api-changes" title="Direct link to heading">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.
+The <code>ouroboros-network-framework</code> package contains a redesign of API exposed to
+<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to
+extend in the future if there will be new arguments that need to be passed to
+mini-protocol initiator and responders which comes from the low-level network
+layer.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nix-setup-ci">Nix setup (CI)<a class="hash-link" href="#nix-setup-ci" title="Direct link to heading">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team
+we ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,
+<code>hls</code>, <code>cddl</code>, and more.  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4640" target="_blank" rel="noopener noreferrer">ouroboros-network#4640</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4643" target="_blank" rel="noopener noreferrer">ouroboros-network#4643</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first
+contract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted
+code &amp; design review.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois-review">Galois Review<a class="hash-link" href="#galois-review" title="Direct link to heading">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3835" target="_blank" rel="noopener noreferrer">ouroboros-network#3835</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci">CI<a class="hash-link" href="#ci" title="Direct link to heading">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be
+executed with extra concurrency <a href="https://github.com/input-output-hk/ouroboros-network/pull/4637" target="_blank" rel="noopener noreferrer">ouroboros-network#4637</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4649" target="_blank" rel="noopener noreferrer">ouroboros-network#4649</a>.</p><p>We also added GitHub's dependabot <a href="https://github.com/input-output-hk/ouroboros-network/pull/4650" target="_blank" rel="noopener noreferrer">ouroboros-network#4650</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We settled on implementation design of bootstrap peers which is being
+implemented, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-18-sre</link>
+            <guid>2023-08-18-sre</guid>
+            <pubDate>Fri, 18 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href="https://flake.parts" target="_blank" rel="noopener noreferrer">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href="https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href="https://github.com/input-output-hk/cardano-world/pull/109" target="_blank" rel="noopener noreferrer">cardano-world-pull-109</a></li><li>Update p2p configs: <a href="https://github.com/input-output-hk/cardano-world/pull/110" target="_blank" rel="noopener noreferrer">cardano-world-pull-110</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inputs-check">Inputs-check<a class="hash-link" href="#inputs-check" title="Direct link to heading">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href="https://github.com/input-output-hk/inputs-check" target="_blank" rel="noopener noreferrer">inputs-check</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-17-crypto</link>
+            <guid>2023-08-17-crypto</guid>
+            <pubDate>Thu, 17 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Full Node Verifier merged <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href="https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta" target="_blank" rel="noopener noreferrer">this</a> fork.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href="https://github.com/input-output-hk/kes-agent/issues/19" target="_blank" rel="noopener noreferrer">#19</a></li><li>Receipt confirmation message <a href="https://github.com/input-output-hk/kes-agent/issues/20" target="_blank" rel="noopener noreferrer">#20</a></li><li>KES agent binary ready <a href="https://github.com/input-output-hk/kes-agent/issues/21" target="_blank" rel="noopener noreferrer">#21</a></li><li>Control client implemented <a href="https://github.com/input-output-hk/kes-agent/issues/11" target="_blank" rel="noopener noreferrer">#11</a></li></ul></li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-17-db-sync</link>
+            <guid>2023-08-17-db-sync</guid>
+            <pubDate>Thu, 17 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.
+We also continued testing and improving the new db-sync options.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Conway integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Support for Sanchonet
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1476" target="_blank" rel="noopener noreferrer">#1476</a></li><li>Stake distribution is computed earlier
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Testing new db-sync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>Added support for ghc-9.6
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1479" target="_blank" rel="noopener noreferrer">#1479</a></li><li>Tech debt: improve exceptions
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1471" target="_blank" rel="noopener noreferrer">#1471</a></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[SECP bindings Security Issue Report]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-17-secp-issue</link>
+            <guid>2023-08-17-secp-issue</guid>
+            <pubDate>Thu, 17 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Security Issue Report: SECP256k1 bug]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="security-issue-report-secp256k1-bug">Security Issue Report: SECP256k1 bug<a class="hash-link" href="#security-issue-report-secp256k1-bug" title="Direct link to heading">​</a></h2><p>Date Occurred: July 15, 2022
+Severity:  Potentially Very High if exploited on Mainnet
+Authors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-issue">Summary of Issue<a class="hash-link" href="#summary-of-issue" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="criticality-level">Criticality Level<a class="hash-link" href="#criticality-level" title="Direct link to heading">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet
+Context</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.
+How was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="what-action-was-taken">What Action was Taken<a class="hash-link" href="#what-action-was-taken" title="Direct link to heading">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).
+Fixes were applied to prevent the use of the primitives.
+A full security audit was carried out on the bindings.
+The rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="potential-effect">Potential Effect<a class="hash-link" href="#potential-effect" title="Direct link to heading">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="actual-effect">Actual Effect<a class="hash-link" href="#actual-effect" title="Direct link to heading">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ongoing-mitigations-needed-if-any">Ongoing Mitigations Needed, if any<a class="hash-link" href="#ongoing-mitigations-needed-if-any" title="Direct link to heading">​</a></h4><p>None</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="responsibility-for-mitigations">Responsibility for Mitigations<a class="hash-link" href="#responsibility-for-mitigations" title="Direct link to heading">​</a></h4><p>Core team</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description-of-incident">Detailed description of Incident<a class="hash-link" href="#detailed-description-of-incident" title="Direct link to heading">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin's library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518" target="_blank" rel="noopener noreferrer">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61" target="_blank" rel="noopener noreferrer">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170" target="_blank" rel="noopener noreferrer">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10" target="_blank" rel="noopener noreferrer">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/289" target="_blank" rel="noopener noreferrer">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="recommendations">Recommendations<a class="hash-link" href="#recommendations" title="Direct link to heading">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are "safe". Treat all external calls circumspectly.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-15-node-cli-api</link>
+            <guid>2023-08-15-node-cli-api</guid>
+            <pubDate>Tue, 15 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-08-02 - 2023-08-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/169" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/164" target="_blank" rel="noopener noreferrer">Reenable golden tests</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/163" target="_blank" rel="noopener noreferrer">#128 DRep key generation</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/160" target="_blank" rel="noopener noreferrer">Bump index states</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/159" target="_blank" rel="noopener noreferrer">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/158" target="_blank" rel="noopener noreferrer">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/151" target="_blank" rel="noopener noreferrer">Plural for command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/144" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/142" target="_blank" rel="noopener noreferrer">Wire up constitution creation in the new era based cli commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/140" target="_blank" rel="noopener noreferrer">cardano-cli 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/137" target="_blank" rel="noopener noreferrer">Wire up remaining DReps</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/136" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/189" target="_blank" rel="noopener noreferrer">Release cardano-api 8.13.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/187" target="_blank" rel="noopener noreferrer">Fix build</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/185" target="_blank" rel="noopener noreferrer">cardano-api 8.13.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/181" target="_blank" rel="noopener noreferrer">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/180" target="_blank" rel="noopener noreferrer">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/173" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/171" target="_blank" rel="noopener noreferrer">Simplify code with new constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/170" target="_blank" rel="noopener noreferrer">Fix <code>EraCast Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/168" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/167" target="_blank" rel="noopener noreferrer">Fix committee hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/164" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/163" target="_blank" rel="noopener noreferrer">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5430" target="_blank" rel="noopener noreferrer">cardano-git-rev: New version for CHaP</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-11-hydra</link>
+            <guid>2023-08-11-hydra</guid>
+            <pubDate>Fri, 11 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version
+8.1.2, ensuring compatibility with the latest mainnet release. The team also
+participated in discussions about a "cardanonical" JSON schema and added it as a
+submodule to the project, contributing to improved data modeling and
+interoperability.</p><p>In terms of community engagement, the team successfully onboarded a new
+contributor, also participated in a RareEvo Twitter space, and continued
+preparations for the Hydra master-class.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href="https://github.com/input-output-hk/hydra/issues/1007" target="_blank" rel="noopener noreferrer">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and
+add it as submodule to the project
+<a href="https://github.com/input-output-hk/hydra/pull/1013" target="_blank" rel="noopener noreferrer">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Release 0.12.0</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-11-performance-and-tracing</link>
+            <guid>2023-08-11-performance-and-tracing</guid>
+            <pubDate>Fri, 11 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we're currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of our release benchmarking cycle, we've completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,
+we're working on having a trace message self-document the final tracing configuration of a running node. Apart from adding
+insight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we're setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent
+and reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were
+able to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-10-mithril</link>
+            <guid>2023-08-10-mithril</guid>
+            <pubDate>Thu, 10 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the <strong>Mithril protocol’s mainnet beta</strong> launch: the <code>release-mainnet</code> network is now consistently producing new certificates and snapshots! The team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a></li><li>Completed the epic <code>Release 'mainnet' Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href="https://github.com/input-output-hk/mithril/issues/1085" target="_blank" rel="noopener noreferrer">#1085</a></li><li>Completed the issue <code>Ingest 'mainnet' metrics/logs in Grafana</code> <a href="https://github.com/input-output-hk/mithril/issues/1122" target="_blank" rel="noopener noreferrer">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a 'clean' file to extracted database in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1131" target="_blank" rel="noopener noreferrer">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href="https://github.com/input-output-hk/mithril/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Completed the issue <code>The 'release-preprod' network stopped producing certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Completed the issue <code>The 'release-mainnet' network does not show up in the explorer</code> <a href="https://github.com/input-output-hk/mithril/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.2'</code> <a href="https://github.com/input-output-hk/mithril/issues/1090" target="_blank" rel="noopener noreferrer">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can't sign with 'Invalid signature for party' error</code> <a href="https://github.com/input-output-hk/mithril/issues/1125" target="_blank" rel="noopener noreferrer">#1125</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-09-consensus</link>
+            <guid>2023-08-09-consensus</guid>
+            <pubDate>Wed, 09 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/256" target="_blank" rel="noopener noreferrer">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/261" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href="https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd" target="_blank" rel="noopener noreferrer">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> and <a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn't happened yet.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-crypto</link>
+            <guid>2023-08-04-crypto</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Work on a mithril flaky test <a href="https://github.com/input-output-hk/mithril/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Keep working on Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Should be merged in the coming week.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Finalised the fuzz tests <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">#43</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-goedel</link>
+            <guid>2023-08-04-goedel</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is formalising mini protocols and also further developing the
+performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Developing new framework for specification and verification of
+mini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that
+allows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-hydra</link>
+            <guid>2023-08-04-hydra</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the
+project. The team updated the use case section for auctions on the <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a>
+branch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced
+persistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves
+off-chain transaction processing performance. They also added a
+<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community
+reviews for several catalyst proposals related to Hydra and Mithril,
+contributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a> branch)</li><li>Completed event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href="https://github.com/input-output-hk/hydra/pull/1006" target="_blank" rel="noopener noreferrer">#1006</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-ledger</link>
+            <guid>2023-08-04-ledger</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In
+particular, the main focus was directed towards solidifying transaction related types and
+their binary representation. We also directed some effort into unblocking Plutus team with
+respect to PlutusV3 integration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3581" target="_blank" rel="noopener noreferrer">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3571" target="_blank" rel="noopener noreferrer">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a> - Add Script to Constitution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3576" target="_blank" rel="noopener noreferrer">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3579" target="_blank" rel="noopener noreferrer">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3585" target="_blank" rel="noopener noreferrer">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3587" target="_blank" rel="noopener noreferrer">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3586" target="_blank" rel="noopener noreferrer">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3588" target="_blank" rel="noopener noreferrer">pull-3588</a> - Rename key roles</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3595" target="_blank" rel="noopener noreferrer">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3600" target="_blank" rel="noopener noreferrer">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3597" target="_blank" rel="noopener noreferrer">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a> - New features for generation subject to constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3519" target="_blank" rel="noopener noreferrer">pull-3519</a> - Basic Conway features test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugfixes">Bugfixes<a class="hash-link" href="#bugfixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3566" target="_blank" rel="noopener noreferrer">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-integration">Plutus integration<a class="hash-link" href="#plutus-integration" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3538" target="_blank" rel="noopener noreferrer">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3593" target="_blank" rel="noopener noreferrer">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3574" target="_blank" rel="noopener noreferrer">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3573" target="_blank" rel="noopener noreferrer">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3555" target="_blank" rel="noopener noreferrer">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3575" target="_blank" rel="noopener noreferrer">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3567" target="_blank" rel="noopener noreferrer">pull-3567</a> - Backport mint field translation bugfix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3568" target="_blank" rel="noopener noreferrer">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3572" target="_blank" rel="noopener noreferrer">pull-3572</a> - Release/backport tickf bugfix</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-network</link>
+            <guid>2023-08-04-network</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level overview of sprint 41]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-41">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22" target="_blank" rel="noopener noreferrer">sprint 41</a><a class="hash-link" href="#high-level-overview-of-sprint-41" title="Direct link to heading">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed
+to provide a safety guarantee for nodes joining the network while still taking
+advantage of the distributed network for nodes that are synced.  This will be
+an intermediate step before Genesis which will allow for further distribute the
+system.  The bootstrap peers will be run by some trusted partners like CF,
+Emurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node
+wallets), which often end up syncing and require access to the honest chain. See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated
+thunks which can lead to memory leaks <a href="https://github.com/input-output-hk/ouroboros-network/issues/4633" target="_blank" rel="noopener noreferrer">ouroboros-network#4633</a>.  We found
+a small one in the peer metric component of the P2P networking stack.  Fixing
+it put us on a small detour of fixing the API of the <a href="https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars" target="_blank" rel="noopener noreferrer"><code>strict-checked-vars</code></a>
+package: <a href="https://github.com/input-output-hk/cardano-base/pulls/431" target="_blank" rel="noopener noreferrer">cardano-base#431</a>, <a href="https://github.com/input-output-hk/cardano-base/pulls/432" target="_blank" rel="noopener noreferrer">cardano-base#432</a>, as well as adding <code>NFData</code>
+instance to <a href="https://github.com/input-output-hk/io-sim/pull/110" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>.  We also improved <code>nothunks</code>
+library to make debugging easier and we provided a <code>NoThunks</code> instance for
+<code>ThreadId</code> which we will need in the future (see <a href="https://github.com/input-output-hk/nothunks/pull/33" target="_blank" rel="noopener noreferrer">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related
+packages to <a href="https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0" target="_blank" rel="noopener noreferrer">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big
+ledger peers, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it's not possible to
+shutdown a node which was starting while trying to update network topology,
+see <a href="https://github.com/input-output-hk/cardano-node/pull/5421" target="_blank" rel="noopener noreferrer">cardano-node#5421</a>.</p><p>I didn't mention that in the previous update, so here it goes: in the previous
+sprint we released <a href="https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-0.8.2.0</code></a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-performance-and-tracing</link>
+            <guid>2023-08-04-performance-and-tracing</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We're adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We've finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We've been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we've successfully performed various benchmarking runs on it.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking
+cluster automation. We've pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint
+when using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any
+inconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.
+This feature adds another layer of robustness to the whole system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler
+versions. We've future-proofed our benchmarking code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend
+accordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we've observed with the
+nomad backend - which will be a big step towards production use.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-04-sre</link>
+            <guid>2023-08-04-sre</guid>
+            <pubDate>Fri, 04 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href="https://github.com/input-output-hk/cardano-ops/pull/416" target="_blank" rel="noopener noreferrer">cardano-ops-pull-416</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href="https://github.com/input-output-hk/cardano-world/pull/104" target="_blank" rel="noopener noreferrer">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/105" target="_blank" rel="noopener noreferrer">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/106" target="_blank" rel="noopener noreferrer">cardano-world-pull-106</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-08-01-node-cli-api</link>
+            <guid>2023-08-01-node-cli-api</guid>
+            <pubDate>Tue, 01 Aug 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-07-19 - 2023-08-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/116" target="_blank" rel="noopener noreferrer">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/115" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/113" target="_blank" rel="noopener noreferrer">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/111" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/110" target="_blank" rel="noopener noreferrer">Add DRep registration certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/109" target="_blank" rel="noopener noreferrer">Add options to delegate voting stake </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/107" target="_blank" rel="noopener noreferrer">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/106" target="_blank" rel="noopener noreferrer">Release cardano-cli 8.4.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/103" target="_blank" rel="noopener noreferrer">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/100" target="_blank" rel="noopener noreferrer">Change directory structure from Options/.. to EraBased/..</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/98" target="_blank" rel="noopener noreferrer">Era-sensitive command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/90" target="_blank" rel="noopener noreferrer">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/155" target="_blank" rel="noopener noreferrer">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/154" target="_blank" rel="noopener noreferrer">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/152" target="_blank" rel="noopener noreferrer">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/151" target="_blank" rel="noopener noreferrer">Deprecate some constraint functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/150" target="_blank" rel="noopener noreferrer">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/149" target="_blank" rel="noopener noreferrer">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/148" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/147" target="_blank" rel="noopener noreferrer">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/146" target="_blank" rel="noopener noreferrer">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/143" target="_blank" rel="noopener noreferrer">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/142" target="_blank" rel="noopener noreferrer">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/141" target="_blank" rel="noopener noreferrer">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/138" target="_blank" rel="noopener noreferrer">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/137" target="_blank" rel="noopener noreferrer">Support more constraints for Conway witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/135" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/134" target="_blank" rel="noopener noreferrer">Expose toShelleyPoolParams for conway integration</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/131" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/130" target="_blank" rel="noopener noreferrer">Expose more functionality from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/128" target="_blank" rel="noopener noreferrer">Improved feature ergonomics</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/127" target="_blank" rel="noopener noreferrer">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5412" target="_blank" rel="noopener noreferrer">Fix stubbed LogFormatting instances</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5401" target="_blank" rel="noopener noreferrer">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5400" target="_blank" rel="noopener noreferrer">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a><ul><li><a href="https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42" target="_blank" rel="noopener noreferrer">WarmValency</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-31-network</link>
+            <guid>2023-07-31-network</guid>
+            <pubDate>Mon, 31 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Update (Sprints 39 & 40)]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update-sprints-39--40">Network Update (Sprints 39 &amp; 40)<a class="hash-link" href="#network-update-sprints-39--40" title="Direct link to heading">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.
+It was great to see and talk to so many of the community members.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-39-jun-26---jul-09">Sprint 39 (Jun 26 - Jul 09)<a class="hash-link" href="#sprint-39-jun-26---jul-09" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes">Major changes<a class="hash-link" href="#major-changes" title="Direct link to heading">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-client-protocol"><code>node-to-client</code> protocol<a class="hash-link" href="#node-to-client-protocol" title="Direct link to heading">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-node-protocol"><code>node-to-node</code> protocol<a class="hash-link" href="#node-to-node-protocol" title="Direct link to heading">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.
+The <code>cardano-client-0.2.0.0</code> was not affected.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4612" target="_blank" rel="noopener noreferrer">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).
+Dynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.
+See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">ouroboros-network#4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="minor-changes">Minor changes<a class="hash-link" href="#minor-changes" title="Direct link to heading">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-40-jul-09---jul-23">Sprint 40 (Jul 09 - Jul 23)<a class="hash-link" href="#sprint-40-jul-09---jul-23" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes-1">Major changes<a class="hash-link" href="#major-changes-1" title="Direct link to heading">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).
+This includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.
+This feature is documented in the <a href="https://github.com/input-output-hk/cardano-node/pull/5399" target="_blank" rel="noopener noreferrer">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre" target="_blank" rel="noopener noreferrer">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.
+Peer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">ouroboros-network#4620</a>.
+The improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.
+Previously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.
+The hot valency (previously known simply as valency) hasn't changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.
+Warm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">cardano-node#5409</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-28-hydra</link>
+            <guid>2023-07-28-hydra</guid>
+            <pubDate>Fri, 28 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.
+They conducted the monthly review meeting for July, which continously ensures
+transparent communication and project evaluation. The team migrated the core
+logic of the node to an event-sourced architecture and incremental writes of
+events to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.
+Furthermore, the team added the ability to read protocol parameters via the API
+and fixed the CI workflows to support pull requests from forks of external
+contributors, streamlining the development process for community involvement.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting for July (<a href="https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/" target="_blank" rel="noopener noreferrer">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href="https://github.com/input-output-hk/hydra/pull/999" target="_blank" rel="noopener noreferrer">#999</a></li><li>Updated persistence to faster incremental writes of events <a href="https://github.com/input-output-hk/hydra/pull/1000" target="_blank" rel="noopener noreferrer">#1000</a></li><li>Added ability to read protocol parameters via API <a href="https://github.com/input-output-hk/hydra/issues/735" target="_blank" rel="noopener noreferrer">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href="https://github.com/input-output-hk/hydra/pull/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Updated to GHC 9.2.8 <a href="https://github.com/input-output-hk/hydra/pull/1005" target="_blank" rel="noopener noreferrer">#1005</a></li><li>Prepared an updated use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a> (published with next release)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-27-mithril</link>
+            <guid>2023-07-27-mithril</guid>
+            <pubDate>Thu, 27 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team launched <strong>Mithril protocol’s mainnet beta</strong>: the <code>release-mainnet</code> network is now open for signer registrations, and its genesis certificate has been created. The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href="https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide" target="_blank" rel="noopener noreferrer">onboarding SPOs</a> and setting up a <a href="https://mithril.network/doc/manual/getting-started/run-signer-node" target="_blank" rel="noopener noreferrer">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the dev blog post <a href="https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch" target="_blank" rel="noopener noreferrer">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Deploy 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Release 'mainnet' Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Completed the issue <code>Add a 'sign' sub-command to 'genesis' command in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1081" target="_blank" rel="noopener noreferrer">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance 'Run a Mithril Signer node (SPO)' guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1055" target="_blank" rel="noopener noreferrer">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href="https://github.com/input-output-hk/mithril/issues/1073" target="_blank" rel="noopener noreferrer">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href="https://github.com/input-output-hk/mithril/issues/834" target="_blank" rel="noopener noreferrer">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of 'ProtocolVerificationKey'</code> <a href="https://github.com/input-output-hk/mithril/issues/1083" target="_blank" rel="noopener noreferrer">#1083</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-26-consensus</link>
+            <guid>2023-07-26-consensus</guid>
+            <pubDate>Wed, 26 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.
+We also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.
+Currently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-liaising">Genesis liaising<a class="hash-link" href="#genesis-liaising" title="Direct link to heading">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/222" target="_blank" rel="noopener noreferrer">#222</a>.</li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/233" target="_blank" rel="noopener noreferrer">#233</a>.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-21-hydra</link>
+            <guid>2023-07-21-hydra</guid>
+            <pubDate>Fri, 21 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated the specification to align with recent
+off-chain protocol changes, completed refactoring the snapshot emission
+in preparation for event-sourced protocol logic, and updated to GHC
+9.2.7, resulting in improved compile times and slightly smaller Plutus
+scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol
+changes to complete
+<a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Refactored the snapshot emission logic in preparation for event
+sourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and
+slightly smaller plutus scripts.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence
+<a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Update the use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a></li><li>Remove deprecated internal commit
+<a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-21-ledger</link>
+            <guid>2023-07-21-ledger</guid>
+            <pubDate>Fri, 21 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.
+All members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.
+We also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).
+Additionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.
+We also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-we-achieved">What we achieved<a class="hash-link" href="#what-we-achieved" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3521" target="_blank" rel="noopener noreferrer">pull-3521</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3554" target="_blank" rel="noopener noreferrer">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3520" target="_blank" rel="noopener noreferrer">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3531" target="_blank" rel="noopener noreferrer">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3558" target="_blank" rel="noopener noreferrer">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3550" target="_blank" rel="noopener noreferrer">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3551" target="_blank" rel="noopener noreferrer">pull-3551</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3546" target="_blank" rel="noopener noreferrer">pull-3546</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3472" target="_blank" rel="noopener noreferrer">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3146" target="_blank" rel="noopener noreferrer">issue-3146</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3498" target="_blank" rel="noopener noreferrer">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2948" target="_blank" rel="noopener noreferrer">issue-2948</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3499" target="_blank" rel="noopener noreferrer">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-currently-in-progress">What is currently in progress<a class="hash-link" href="#what-is-currently-in-progress" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3494" target="_blank" rel="noopener noreferrer">issue-3494</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3436" target="_blank" rel="noopener noreferrer">issue-3436</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3509" target="_blank" rel="noopener noreferrer">issue-3509</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3532" target="_blank" rel="noopener noreferrer">issue-3532</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a>] Add script-support for the constitution</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3543" target="_blank" rel="noopener noreferrer">issue-3543</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a>] Improve the 'new committee' governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-21-sre</link>
+            <guid>2023-07-21-sre</guid>
+            <pubDate>Fri, 21 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href="https://github.com/input-output-hk/cardano-node/pull/5406" target="_blank" rel="noopener noreferrer">cardano-node-pull-5406</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href="https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href="https://github.com/input-output-hk/cardano-world/pull/102" target="_blank" rel="noopener noreferrer">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/103" target="_blank" rel="noopener noreferrer">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href="https://github.com/input-output-hk/cardano-world/pull/91" target="_blank" rel="noopener noreferrer">cardano-world-pull-91</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/iohk-nix/pull/549" target="_blank" rel="noopener noreferrer">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href="https://github.com/input-output-hk/iohk-nix/pull/550" target="_blank" rel="noopener noreferrer">iohk-nix-pull-550</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-20-goedel</link>
+            <guid>2023-07-20-goedel</guid>
+            <pubDate>Thu, 20 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on formalising mini protocols, the performance
+modelling prototype and also finishing off their ICE papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the
+thorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of
+mini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete
+backend based on piecewise-polynomials</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-18-node-cli-api</link>
+            <guid>2023-07-18-node-cli-api</guid>
+            <pubDate>Tue, 18 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-07-05 - 2023-07-18</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/74" target="_blank" rel="noopener noreferrer">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/72" target="_blank" rel="noopener noreferrer">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/68" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/67" target="_blank" rel="noopener noreferrer">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/66" target="_blank" rel="noopener noreferrer">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/65" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/123" target="_blank" rel="noopener noreferrer">Fix ghc version CPP</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/122" target="_blank" rel="noopener noreferrer">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/119" target="_blank" rel="noopener noreferrer">Incorporate remaining ledger certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/117" target="_blank" rel="noopener noreferrer">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/115" target="_blank" rel="noopener noreferrer">Fix Eq, Show for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/112" target="_blank" rel="noopener noreferrer">Wire up remaining governance actions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/108" target="_blank" rel="noopener noreferrer">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/106" target="_blank" rel="noopener noreferrer">Remove unnecessary constraint</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/104" target="_blank" rel="noopener noreferrer">Make it build with ghc-9.6</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/103" target="_blank" rel="noopener noreferrer">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/102" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/101" target="_blank" rel="noopener noreferrer">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/99" target="_blank" rel="noopener noreferrer">Update ledger and consensus</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/98" target="_blank" rel="noopener noreferrer">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5391" target="_blank" rel="noopener noreferrer">Fix Shutdown test for new exit codes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5387" target="_blank" rel="noopener noreferrer">Fix markdown links</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/69" target="_blank" rel="noopener noreferrer">Apply <code>stylish-haskell</code> to project</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-14-hydra</link>
+            <guid>2023-07-14-hydra</guid>
+            <pubDate>Fri, 14 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order
+to improve <code>hydra-node</code> performance. Because of this work the team noticed we
+need to refactor the emit snapshot emission logic and update the spec in the
+light of new changes. They also took the time to revisit their goals and product
+plans for the next quarter as well as doing some security fixes related to
+multisignatures.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/963" target="_blank" rel="noopener noreferrer">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4" target="_blank" rel="noopener noreferrer">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href="https://github.com/input-output-hk/hydra/pull/962" target="_blank" rel="noopener noreferrer">#962</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement Event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Remove deprecated internal commit <a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a> and close <a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-13-mithril</link>
+            <guid>2023-07-13-mithril</guid>
+            <pubDate>Thu, 13 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a> distribution. They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li><li>Worked on the issue <code>Deploy 'mainnet' infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/932" target="_blank" rel="noopener noreferrer">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1037" target="_blank" rel="noopener noreferrer">#1037</a></li><li>Completed the issue <code>Add 'created_at' in Mithril Stake Distribution messages</code> <a href="https://github.com/input-output-hk/mithril/issues/1030" target="_blank" rel="noopener noreferrer">#1030</a></li><li>Completed the issue <code>Add a 'run-only' option in end to end test</code> <a href="https://github.com/input-output-hk/mithril/issues/1048" target="_blank" rel="noopener noreferrer">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href="https://github.com/input-output-hk/mithril/issues/1058" target="_blank" rel="noopener noreferrer">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/874" target="_blank" rel="noopener noreferrer">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href="https://github.com/input-output-hk/mithril/issues/1040" target="_blank" rel="noopener noreferrer">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href="https://github.com/input-output-hk/mithril/issues/1041" target="_blank" rel="noopener noreferrer">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href="https://github.com/input-output-hk/mithril/issues/952" target="_blank" rel="noopener noreferrer">#952</a></li><li>Completed the issue <code>'testing-preview' network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/837" target="_blank" rel="noopener noreferrer">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href="https://github.com/input-output-hk/mithril/issues/1035" target="_blank" rel="noopener noreferrer">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1023" target="_blank" rel="noopener noreferrer">#1023</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-12-consensus</link>
+            <guid>2023-07-12-consensus</guid>
+            <pubDate>Wed, 12 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/200" target="_blank" rel="noopener noreferrer">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-12-performance-and-tracing</link>
+            <guid>2023-07-12-performance-and-tracing</guid>
+            <pubDate>Wed, 12 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-07-crypto</link>
+            <guid>2023-07-07-crypto</guid>
+            <pubDate>Fri, 07 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes_agent">kes_agent<a class="hash-link" href="#kes_agent" title="Direct link to heading">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href="https://github.com/input-output-hk/kes-agent/issues/14" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Included benchmarks and further tests.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cips-and-community">CIPs and community<a class="hash-link" href="#cips-and-community" title="Direct link to heading">​</a></h3><ul><li>Addressed some review comments in <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#PR506</a></li><li>Worked with the communityt on <a href="https://github.com/cardano-foundation/CIPs/pull/524" target="_blank" rel="noopener noreferrer">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-07-goedel</link>
+            <guid>2023-07-07-goedel</guid>
+            <pubDate>Fri, 07 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers
+for publication in EPTCS, formalising concensus, and investigating chain
+sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-07-hydra</link>
+            <guid>2023-07-07-hydra</guid>
+            <pubDate>Fri, 07 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the
+network layer further by implementing authentication of the messages between the
+peers in the Head protocol. In the process they also managed to separate
+HeartBeat messages from the protocol ones which somewhat improved the quality of
+code in Hydra. The team also finished work related to sending only transaction
+ids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark
+publishing on the website.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">Implemented</a> authenticated messages</li><li><a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href="https://github.com/input-output-hk/hydra/pull/969" target="_blank" rel="noopener noreferrer">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href="https://github.com/input-output-hk/hydra/pull/947" target="_blank" rel="noopener noreferrer">benchmarks</a></li><li><a href="https://github.com/input-output-hk/hydra/pull/967" target="_blank" rel="noopener noreferrer">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href="https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1" target="_blank" rel="noopener noreferrer">off-chain signature
+verification</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-07-sre</link>
+            <guid>2023-07-07-sre</guid>
+            <pubDate>Fri, 07 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href="https://github.com/input-output-hk/cardano-node/pull/5360" target="_blank" rel="noopener noreferrer">cardano-node-pull-5360</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ogmios">Cardano-ogmios<a class="hash-link" href="#cardano-ogmios" title="Direct link to heading">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href="https://github.com/input-output-hk/cardano-ogmios/pull/6" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-6</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href="https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-rosetta">Cardano-rosetta<a class="hash-link" href="#cardano-rosetta" title="Direct link to heading">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href="https://github.com/cardano-foundation/cardano-rosetta/pull/532" target="_blank" rel="noopener noreferrer">cardano-rosetta-pull-532</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href="https://github.com/input-output-hk/cardano-world/pull/99" target="_blank" rel="noopener noreferrer">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href="https://github.com/input-output-hk/cardano-world/pull/100" target="_blank" rel="noopener noreferrer">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href="https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href="https://github.com/input-output-hk/cardano-world/pull/101" target="_blank" rel="noopener noreferrer">cardano-world-pull-101</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href="https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911" target="_blank" rel="noopener noreferrer">spongix-simple-branch</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Developer Experience Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-06-developer-experience</link>
+            <guid>2023-07-06-developer-experience</guid>
+            <pubDate>Thu, 06 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We've also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="hydra-tools">Hydra Tools<a class="hash-link" href="#hydra-tools" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/hydra-tools" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>]]></content:encoded>
+            <category>devx</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-04-db-sync</link>
+            <guid>2023-07-04-db-sync</guid>
+            <pubDate>Tue, 04 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1455" target="_blank" rel="noopener noreferrer">#1455</a>.</li><li>This also fixes a bug
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1451" target="_blank" rel="noopener noreferrer">#1451</a></li><li>Added new tests to the new tx_out options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency
+This fixes many other issues and simplifies the logic in db-sync
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1447" target="_blank" rel="noopener noreferrer">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1436" target="_blank" rel="noopener noreferrer">#1436</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1442" target="_blank" rel="noopener noreferrer">#1442</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1448" target="_blank" rel="noopener noreferrer">#1448</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1452" target="_blank" rel="noopener noreferrer">#1452</a></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-07-04-node-cli-api</link>
+            <guid>2023-07-04-node-cli-api</guid>
+            <pubDate>Tue, 04 Jul 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-06-21 - 2023-07-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance "Update constitution" governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/60" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/44" target="_blank" rel="noopener noreferrer">Release 8.2.1</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/39" target="_blank" rel="noopener noreferrer">Use new function-based API instead of using query data types directly</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/94" target="_blank" rel="noopener noreferrer">Release cardano-api 8.7</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/92" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/90" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/88" target="_blank" rel="noopener noreferrer">Backport: Add era phantom type parameter to Certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/86" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/85" target="_blank" rel="noopener noreferrer">Voting procedure and proposal procedure updates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/84" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/83" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/77" target="_blank" rel="noopener noreferrer">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/70" target="_blank" rel="noopener noreferrer">Update CHaP index</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/41" target="_blank" rel="noopener noreferrer">CIP-1694 API - Part 1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node top level error handler</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5364" target="_blank" rel="noopener noreferrer">Report payment address and UTxOs in testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5362" target="_blank" rel="noopener noreferrer">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/33" target="_blank" rel="noopener noreferrer">Release workflow description</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/75" target="_blank" rel="noopener noreferrer">Add PR changelog check</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/71" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/62" target="_blank" rel="noopener noreferrer">Enable CI on PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/53" target="_blank" rel="noopener noreferrer">Remove merge_group trigger from changelog check CI</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/46" target="_blank" rel="noopener noreferrer">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/41" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/40" target="_blank" rel="noopener noreferrer">Enable CI in PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/48" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-30-hydra</link>
+            <guid>2023-06-30-hydra</guid>
+            <pubDate>Fri, 30 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,
+implemented the end-to-end functionality for external commits, and tested it on
+the preview environment. They also listed Hydra as a tool on the Cardano
+developer portal, providing more visibility for the project. The team clarified
+the path forward for L2 protocol improvements and explored an alternative CI
+approach using cabal instead of nix. Additionally, they released version 0.11.0,
+marking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Written and published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-06" target="_blank" rel="noopener noreferrer">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li><li>Listed Hydra as a tool on cardano <a href="https://developers.cardano.org/tools/" target="_blank" rel="noopener noreferrer">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Established an alternative CI using more cabal tools <a href="https://github.com/input-output-hk/hydra/pull/923" target="_blank" rel="noopener noreferrer">#923</a></li><li>Release version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.11.0</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Complete ReqSn only sends transaction ids <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-29-mithril</link>
+            <guid>2023-06-29-mithril</guid>
+            <pubDate>Thu, 29 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano <code>mainnet</code> infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on 'mainnet' and 'preview'/'preprod'</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1018" target="_blank" rel="noopener noreferrer">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href="https://github.com/input-output-hk/mithril/issues/1017" target="_blank" rel="noopener noreferrer">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href="https://github.com/input-output-hk/mithril/issues/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href="https://github.com/input-output-hk/mithril/issues/1006" target="_blank" rel="noopener noreferrer">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>'testing-preview' network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Completed the issue <code>Add 'recompute-certificates-hash' command to aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1001" target="_blank" rel="noopener noreferrer">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/984" target="_blank" rel="noopener noreferrer">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/944" target="_blank" rel="noopener noreferrer">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/978" target="_blank" rel="noopener noreferrer">#978</a></li><li>Completed the issue <code>Clean 'pending_snapshot' directory of aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/983" target="_blank" rel="noopener noreferrer">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href="https://github.com/input-output-hk/mithril/issues/1000" target="_blank" rel="noopener noreferrer">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/982" target="_blank" rel="noopener noreferrer">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1010" target="_blank" rel="noopener noreferrer">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.1.1'</code> <a href="https://github.com/input-output-hk/mithril/issues/973" target="_blank" rel="noopener noreferrer">#973</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-28-consensus</link>
+            <guid>2023-06-28-consensus</guid>
+            <pubDate>Wed, 28 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722" target="_blank" rel="noopener noreferrer">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/149" target="_blank" rel="noopener noreferrer">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/87" target="_blank" rel="noopener noreferrer">added</a> a new "legacy" cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don't involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-28-performance-and-tracing</link>
+            <guid>2023-06-28-performance-and-tracing</guid>
+            <pubDate>Wed, 28 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We've looked into an issue where the tracing system's concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9's significantly different inlining behaviour may produce those effects. We're currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The tracing system's concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we've been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we're continuing the new backend's validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-23-goedel</link>
+            <guid>2023-06-23-goedel</guid>
+            <pubDate>Fri, 23 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-23-hydra</link>
+            <guid>2023-06-23-hydra</guid>
+            <pubDate>Fri, 23 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review
+meeting (monthly report and video recording available soon) and started
+experimenting on preview network with the new commit from external wallet
+feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">commit from external
+wallet</a></li><li>Published regular <a href="https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks" target="_blank" rel="noopener noreferrer">benchmarks for
+Hydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs
+<a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full
+transactions <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a> -&gt; this
+is now evolved into fully addressing <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet
+<a href="https://github.com/input-output-hk/hydra/pull/924" target="_blank" rel="noopener noreferrer">#924</a></li><li>Add flag option to display node version on tui
+<a href="https://github.com/input-output-hk/hydra/pull/934" target="_blank" rel="noopener noreferrer">#934</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-23-network</link>
+            <guid>2023-06-23-network</guid>
+            <pubDate>Fri, 23 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions">Key contributions<a class="hash-link" href="#key-contributions" title="Direct link to heading">​</a></h3><p>We held a series of session to review the implementation of big ledger peers
+(eclipse evasion). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec
+and protocol implementation.  We worked out a nice solution which takes
+advantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we
+provide <code>Any</code> type which gen generate almost any CBOR term (some are excluded
+only because they are not decoded back to the same form, and we relay on that
+property).  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has
+a limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is
+ignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that
+the format of messages has changed, timestamps are printed in ISO8601 format.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">#4601</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">#5326</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers
+when the chain is close to the tip, we continued to work on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.  This is
+currently in review, the consensus team will need to provide us with the new
+api.  This feature is useful for two reasons: makes it easier to maintain
+a topology file, it will also limit the traffic on public roots generated by
+for example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design
+&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-changes">Other smaller changes<a class="hash-link" href="#other-smaller-changes" title="Direct link to heading">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger
+peers DNS names are resolved concurrently, and at most 2 local root peer DNS
+names. See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">#4596</a>.</p><p>We fixed handshake query timeout in <a href="https://github.com/input-output-hk/ouroboros-network/pull/4603" target="_blank" rel="noopener noreferrer">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the
+consensus team, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">#4608</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-23-sre</link>
+            <guid>2023-06-23-sre</guid>
+            <pubDate>Fri, 23 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href="https://github.com/input-output-hk/cardano-node/pull/5318" target="_blank" rel="noopener noreferrer">cardano-node-pull-5318</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href="https://github.com/input-output-hk/cardano-ops/pull/414" target="_blank" rel="noopener noreferrer">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/tree/ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-ops-local</a>, <a href="https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p" target="_blank" rel="noopener noreferrer">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/cardano-world/pull/96" target="_blank" rel="noopener noreferrer">cardano-world-pull-96</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href="https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9" target="_blank" rel="noopener noreferrer">ci-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href="https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250" target="_blank" rel="noopener noreferrer">ci-world-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx-ci">Devx-ci<a class="hash-link" href="#devx-ci" title="Direct link to heading">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href="https://github.com/input-output-hk/devx-ci" target="_blank" rel="noopener noreferrer">devx-ci-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/iohk-nix/pull/545" target="_blank" rel="noopener noreferrer">iohk-nix-pull-545</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-16-hydra</link>
+            <guid>2023-06-16-hydra</guid>
+            <pubDate>Fri, 16 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and
+experiment operating a head on mainnet. They collected several bugs and issues
+and worked on fixing them. Now the team is soon to release a new version,
+0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li><li>Solved one user issue <a href="https://github.com/input-output-hk/hydra/issues/914" target="_blank" rel="noopener noreferrer">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href="https://github.com/input-output-hk/hydra/pull/928" target="_blank" rel="noopener noreferrer">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-15-mithril</link>
+            <guid>2023-06-15-mithril</guid>
+            <pubDate>Thu, 15 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for 'Mithril Stake Distribution' in client</code> <a href="https://github.com/input-output-hk/mithril/issues/896" target="_blank" rel="noopener noreferrer">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/960" target="_blank" rel="noopener noreferrer">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the 'mainnet'</code> <a href="https://github.com/input-output-hk/mithril/issues/962" target="_blank" rel="noopener noreferrer">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on 'mainnet' and  'preview'/'preprod'</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href="https://github.com/input-output-hk/mithril/issues/953" target="_blank" rel="noopener noreferrer">#953</a></li><li>Completed the issue <code>CI tests fail with Rust '1.70.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/958" target="_blank" rel="noopener noreferrer">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Worked on the issue <code>Refactor 'MithrilStakeDistribution' entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Fix 'Mithril Client multi-platform test' with new client interface</code> <a href="https://github.com/input-output-hk/mithril/issues/956" target="_blank" rel="noopener noreferrer">#956</a></li><li>Completed the issue <code>Enhance 'ImmutableDigesterError::NotEnoughImmutable' error</code> <a href="https://github.com/input-output-hk/mithril/issues/969" target="_blank" rel="noopener noreferrer">#969</a></li><li>Completed the issue <code>Client 'snapshot download' command fails with option '--download-dir'</code> <a href="https://github.com/input-output-hk/mithril/issues/979" target="_blank" rel="noopener noreferrer">#979</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-14-consensus</link>
+            <guid>2023-06-14-consensus</guid>
+            <pubDate>Wed, 14 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.
+There is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated "Limit on Patience" timeout sufficiently bounds how long the adversary can inflate a victim's overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.
+We managed to run a node again with UTxO-HD enabled.
+We also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-14-performance-and-tracing</link>
+            <guid>2023-06-14-performance-and-tracing</guid>
+            <pubDate>Wed, 14 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We've performed the first full runs on the new backend.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we've measured
+performance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts
+done on several system components.  </p><p>In the meantime, we've finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for
+benchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be
+meaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific
+trace messages are closely aligned. We've found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we've had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As the new backend's healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we've performed our first 52-node cluster runs on nomad cloud. We're currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new
+infrastructure to the existing ones, including determining reproducibility and variance.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-12-network</link>
+            <guid>2023-06-12-network</guid>
+            <pubDate>Mon, 12 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions-and-advances">Key contributions and advances<a class="hash-link" href="#key-contributions-and-advances" title="Direct link to heading">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers
+into outbound governor known peers.  This is the primary way for new
+unregistered nodes to enter the network, which then can be shared using peer
+sharing.  Note that peer sharing is an experimental feature which is disabled
+until genesis &amp; eclipse evasion as fully implemented. See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots
+where ignored until the first domain name was resolved, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4583" target="_blank" rel="noopener noreferrer">#4583</a>.  The bug
+fix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">#140</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-cardano-ping--cardano-cli-ping-release">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class="hash-link" href="#new-cardano-ping--cardano-cli-ping-release" title="Direct link to heading">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new
+query feature (query supported versions). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">#4589</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">#4593</a> and <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>.
+The new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted
+timestamps; also the formatting of ping results is slightly improved, and it
+will introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site
+supports the query parameter, the command will print:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.064</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.045</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which
+allows us to detect whether the remote side is an <code>InitiatorOnly</code> or
+<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce
+itself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-contributions">Other smaller contributions<a class="hash-link" href="#other-smaller-contributions" title="Direct link to heading">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,
+which are now available <a href="https://input-output-hk.github.io/typed-protocols/" target="_blank" rel="noopener noreferrer">here</a> (<a href="https://github.com/input-output-hk/typed-protocols/pull/40" target="_blank" rel="noopener noreferrer">#40</a>, <a href="https://github.com/input-output-hk/typed-protocols/pull/41" target="_blank" rel="noopener noreferrer">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in
+package description file, <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new
+<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.
+The PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4580" target="_blank" rel="noopener noreferrer">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-09-crypto</link>
+            <guid>2023-06-09-crypto</guid>
+            <pubDate>Fri, 09 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows' localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc" target="_blank" rel="noopener noreferrer">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue" target="_blank" rel="noopener noreferrer">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Developer Experience Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-09-developer-experience</link>
+            <guid>2023-06-09-developer-experience</guid>
+            <pubDate>Fri, 09 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We've also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href="https://github.com/input-output-hk/cardano-base" target="_blank" rel="noopener noreferrer">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we're prioritizing compaining even stronger for better backwards compatibility.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="chap-cardano-haskell-packages">CHaP (cardano-haskell-packages)<a class="hash-link" href="#chap-cardano-haskell-packages" title="Direct link to heading">​</a></h3><p>We relocated the underlying tooling, (<a href="https://github.com/input-output-hk/foliage" target="_blank" rel="noopener noreferrer">foliage</a>), for <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/260" target="_blank" rel="noopener noreferrer">improved tooling to quickly add constraints to packages</a>, <a href="https://github.com/input-output-hk/cardano-haskell-packages/issues/285" target="_blank" rel="noopener noreferrer">better error reporting for add-revision</a> and <a href="https://github.com/input-output-hk/foliage/pull/63" target="_blank" rel="noopener noreferrer">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="github-actions">GitHub Actions<a class="hash-link" href="#github-actions" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/iohk-nix" target="_blank" rel="noopener noreferrer">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The relatively new <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository's readme has been updated to reflect its purpose and usage guidelines.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p>]]></content:encoded>
+            <category>devx</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-09-hydra</link>
+            <guid>2023-06-09-hydra</guid>
+            <pubDate>Fri, 09 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the
+investigation about the broken head on mainnet and re-opened their persistent
+head instance. The team also fixed the monthly report publication on their
+website and started sketching ideas and further improvements. Also, they are on
+the last mile to deliver a new feature which will allow parties to commit funds
+from extern wallets. Finally the team started to work on optimizing the
+performance on their benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a></li><li>Fix monthly report publication on docs website and published the <a href="https://hydra.family/head-protocol/monthly/2023-05" target="_blank" rel="noopener noreferrer">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href="https://github.com/input-output-hk/hydra/issues/908" target="_blank" rel="noopener noreferrer">#908</a></li><li>Open issue to docusaurus <a href="https://github.com/facebook/docusaurus/issues/9036" target="_blank" rel="noopener noreferrer">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href="https://github.com/input-output-hk/hydra/pull/910" target="_blank" rel="noopener noreferrer">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a
+bottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide
+regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li><li>Add hydra as tool to developer platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-08-db-sync</link>
+            <guid>2023-06-08-db-sync</guid>
+            <pubDate>Thu, 08 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We've made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that
+the consensus team is working on
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/88" target="_blank" rel="noopener noreferrer">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1416" target="_blank" rel="noopener noreferrer">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1419" target="_blank" rel="noopener noreferrer">#1419</a></li><li>Fixed issue with ada_pots being wrong
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href="https://github.com/input-output-hk/cardano-db-sync/releases" target="_blank" rel="noopener noreferrer"><code>13.1.1.2</code></a>
+which is tested and ready to release. It contains many of the above.</li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-08-goedel</link>
+            <guid>2023-06-08-goedel</guid>
+            <pubDate>Thu, 08 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on giving and preparing public
+talks, also on preparing final versions of their ICE 2023 papers, and
+on analysing chain selection.</p><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:
+<a href="https://www.lambdadays.org/lambdadays2023" target="_blank" rel="noopener noreferrer">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:
+<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-08-sre</link>
+            <guid>2023-06-08-sre</guid>
+            <pubDate>Thu, 08 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href="https://github.com/input-output-hk/bitte/pull/194" target="_blank" rel="noopener noreferrer">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href="https://github.com/input-output-hk/bitte/pull/201" target="_blank" rel="noopener noreferrer">bitte-pull-201</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-cells">Bitte-cells<a class="hash-link" href="#bitte-cells" title="Direct link to heading">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href="https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex" target="_blank" rel="noopener noreferrer">bitte-cells-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-graphql">Cardano-graphql<a class="hash-link" href="#cardano-graphql" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href="https://github.com/input-output-hk/cardano-graphql/pull/815" target="_blank" rel="noopener noreferrer">cardano-graphql-pull-815</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href="https://github.com/input-output-hk/cardano-node/pull/5241" target="_blank" rel="noopener noreferrer">cardano-node-pull-5241</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href="https://github.com/input-output-hk/cardano-ops/pull/411" target="_blank" rel="noopener noreferrer">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/compare/master...ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href="https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href="https://github.com/input-output-hk/cardano-world/pull/68" target="_blank" rel="noopener noreferrer">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href="https://github.com/input-output-hk/cardano-world/pull/69" target="_blank" rel="noopener noreferrer">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/75" target="_blank" rel="noopener noreferrer">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href="https://github.com/input-output-hk/cardano-world/pull/77" target="_blank" rel="noopener noreferrer">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href="https://github.com/input-output-hk/cardano-world/pull/79" target="_blank" rel="noopener noreferrer">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/84" target="_blank" rel="noopener noreferrer">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href="https://github.com/input-output-hk/cardano-world/pull/87" target="_blank" rel="noopener noreferrer">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href="https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href="https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href="https://github.com/input-output-hk/cardano-world/pull/92" target="_blank" rel="noopener noreferrer">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/cardano-world/pull/93" target="_blank" rel="noopener noreferrer">cardano-world-pr-93</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href="https://github.com/input-output-hk/ci-ops/pull/108" target="_blank" rel="noopener noreferrer">ci-ops-pull-108</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href="https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f" target="_blank" rel="noopener noreferrer">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/22" target="_blank" rel="noopener noreferrer">ci-world-pull-22</a></li><li>Migrate patroni HA db to it's own namespace in ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/24" target="_blank" rel="noopener noreferrer">ci-world-pull-24</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href="https://github.com/input-output-hk/cicero/pull/79" target="_blank" rel="noopener noreferrer">cicero-pull-79</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href="https://github.com/input-output-hk/iohk-nix/pull/534" target="_blank" rel="noopener noreferrer">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/iohk-nix/pull/544" target="_blank" rel="noopener noreferrer">iohk-nix-pull-544</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">Openziti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href="https://github.com/johnalotoski/openziti-bins/pull/1" target="_blank" rel="noopener noreferrer">openziti-bins-pull-1</a></li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[System Test Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-08-system-test</link>
+            <guid>2023-06-08-system-test</guid>
+            <pubDate>Thu, 08 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html" target="_blank" rel="noopener noreferrer">1.35.7</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html" target="_blank" rel="noopener noreferrer">8.0.0</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>]]></content:encoded>
+            <category>system-test</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-07-node-cli-api</link>
+            <guid>2023-06-07-node-cli-api</guid>
+            <pubDate>Wed, 07 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-06-07 - 2023-06-20</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5316" target="_blank" rel="noopener noreferrer">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">Updated cardano-cli ping command</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/28" target="_blank" rel="noopener noreferrer">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/25" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/24" target="_blank" rel="noopener noreferrer">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/20" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/59" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/58" target="_blank" rel="noopener noreferrer">New <code>requireShelleyBasedEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/57" target="_blank" rel="noopener noreferrer">New version cardano-api-8.5.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/56" target="_blank" rel="noopener noreferrer">New <code>queryEpoch</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/55" target="_blank" rel="noopener noreferrer">New version 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/54" target="_blank" rel="noopener noreferrer">Error on <code>hlint</code> warnings in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/53" target="_blank" rel="noopener noreferrer">Additional query expression functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/52" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/49" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/48" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/47" target="_blank" rel="noopener noreferrer">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/46" target="_blank" rel="noopener noreferrer">Revert to use <code>testProperty</code> now that it isn't deprecated anymore</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1" target="_blank" rel="noopener noreferrer">cardano-node 8.1.1 release</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5340" target="_blank" rel="noopener noreferrer">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5339" target="_blank" rel="noopener noreferrer">Move golden files to proper location</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5336" target="_blank" rel="noopener noreferrer">Conway testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5335" target="_blank" rel="noopener noreferrer">Don't retry testnet when failed</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5321" target="_blank" rel="noopener noreferrer">Remove YAML filepath record from data Conf</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5309" target="_blank" rel="noopener noreferrer">Remove duplicate --testnet-magic flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5307" target="_blank" rel="noopener noreferrer">Restructure cardano testnet </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/18" target="_blank" rel="noopener noreferrer">Fix Windows CI issues</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-02-hydra</link>
+            <guid>2023-06-02-hydra</guid>
+            <pubDate>Fri, 02 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many
+different problems, such as our broken head on mainnet
+<a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>, our fragile monthly
+report publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for
+external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.
+Although most of these items are still open, huge progress has been made. To
+accelerate the investigation, they improved their logging to give more precise
+errors when a transition requirement fails, and to reduce duplication on effets
+logged content. Last but not least, the team is exploring formal methods and
+attended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href="https://github.com/input-output-hk/hydra/pull/895" target="_blank" rel="noopener noreferrer">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href="https://github.com/input-output-hk/hydra/pull/896" target="_blank" rel="noopener noreferrer">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href="https://github.com/input-output-hk/hydra/pull/893" target="_blank" rel="noopener noreferrer">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-06-01-mithril</link>
+            <guid>2023-06-01-mithril</guid>
+            <pubDate>Thu, 01 Jun 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a> distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href="https://github.com/input-output-hk/mithril/issues/925" target="_blank" rel="noopener noreferrer">#925</a></li><li>Completed the issue <code>Create the sub-command for 'Cardano Immutable Files Full' in client</code> <a href="https://github.com/input-output-hk/mithril/issues/895" target="_blank" rel="noopener noreferrer">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/933" target="_blank" rel="noopener noreferrer">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/892" target="_blank" rel="noopener noreferrer">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to '8.0.0'</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href="https://github.com/input-output-hk/mithril/issues/512" target="_blank" rel="noopener noreferrer">#512</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-31-consensus</link>
+            <guid>2023-05-31-consensus</guid>
+            <pubDate>Wed, 31 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network's ledger-peer selection (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101" target="_blank" rel="noopener noreferrer">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-31-performance-and-tracing</link>
+            <guid>2023-05-31-performance-and-tracing</guid>
+            <pubDate>Wed, 31 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We've performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We've discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build
+configuration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive
+to benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile
+we'd expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way
+shorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great
+support when evaluating different compiler versions or RTS flags incrementally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various
+logging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to
+directly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We're currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with
+job definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing
+benchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible
+and offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate
+very specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-26-goedel</link>
+            <guid>2023-05-26-goedel</guid>
+            <pubDate>Fri, 26 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-26-hydra</link>
+            <guid>2023-05-26-hydra</guid>
+            <pubDate>Fri, 26 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their
+monthly review meeting and drafted the report for May. They made progress on
+implementing the first end-to-end journey for external commits using "Option A"
+for normal UTxOs, while still considering "Option B". The team also integrated a
+Spanish translation contributed by the community, created micro-benchmarks for
+transaction validation and deserialization, and made improvements to
+hydra-node's version reporting. Last but not least, they implemented the ability
+to commit multiple UTxOs to a head at once.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting (<a href="https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view" target="_blank" rel="noopener noreferrer">recording</a> + <a href="https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA" target="_blank" rel="noopener noreferrer">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->
+for normal UTxOs <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href="https://github.com/input-output-hk/hydra/pull/884" target="_blank" rel="noopener noreferrer">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href="https://github.com/input-output-hk/hydra/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete external commits with script UTxOs <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-26-ledger</link>
+            <guid>2023-05-26-ledger</guid>
+            <pubDate>Fri, 26 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation
+of the new certificates is near complete, we refactored some of our data structures
+to be able to support DReps, we cleaned up the serialization format, and renamed things to make
+clearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.
+And, as always, we continue to address technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3408" target="_blank" rel="noopener noreferrer">pull-3408</a> - Improve conway delegation certificates</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3428" target="_blank" rel="noopener noreferrer">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3426" target="_blank" rel="noopener noreferrer">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3425" target="_blank" rel="noopener noreferrer">pull-3425</a> - Improve witness logic needed for conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3423" target="_blank" rel="noopener noreferrer">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3421" target="_blank" rel="noopener noreferrer">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3454" target="_blank" rel="noopener noreferrer">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improve-testing">Improve testing<a class="hash-link" href="#improve-testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3403" target="_blank" rel="noopener noreferrer">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3410" target="_blank" rel="noopener noreferrer">pull-3410</a> - Update chaps index</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3416" target="_blank" rel="noopener noreferrer">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3414" target="_blank" rel="noopener noreferrer">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3420" target="_blank" rel="noopener noreferrer">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3441" target="_blank" rel="noopener noreferrer">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3409" target="_blank" rel="noopener noreferrer">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3407" target="_blank" rel="noopener noreferrer">pull-3407</a> -  Fixup release process documentation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3404" target="_blank" rel="noopener noreferrer">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3402" target="_blank" rel="noopener noreferrer">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3424" target="_blank" rel="noopener noreferrer">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3432" target="_blank" rel="noopener noreferrer">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3440" target="_blank" rel="noopener noreferrer">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-26-network</link>
+            <guid>2023-05-26-network</guid>
+            <pubDate>Fri, 26 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug
+when using DNS names in local root peers.  We continued working on engineering
+blog post about P2P. We released a new version of packages for
+<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks
+if <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><ul><li>Eclipse evasion: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a></li><li>Local root peers bug fix: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">#4559</a></li><li>Release to CHaP: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li><li>CI improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">#4572</a></li><li>Release script improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-24-node-cli-api</link>
+            <guid>2023-05-24-node-cli-api</guid>
+            <pubDate>Wed, 24 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-05-24 - 2023-06-06</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href="https://github.com/input-output-hk/fusion-flamingo" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5290" target="_blank" rel="noopener noreferrer">Update <code>cardano-cli</code> changelog</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5197" target="_blank" rel="noopener noreferrer">Propagate protocol parameters conversion errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5149" target="_blank" rel="noopener noreferrer">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/31" target="_blank" rel="noopener noreferrer">Switch to <code>tasty-discover</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/30" target="_blank" rel="noopener noreferrer">Move tests to standard locations</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/26" target="_blank" rel="noopener noreferrer">Make cardano-api:internal component public</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/24" target="_blank" rel="noopener noreferrer">update chaps index</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/18" target="_blank" rel="noopener noreferrer">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/17" target="_blank" rel="noopener noreferrer">Expose toAlonzoCostModels</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/9" target="_blank" rel="noopener noreferrer">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/32" target="_blank" rel="noopener noreferrer">Check changelog in tag script</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/34" target="_blank" rel="noopener noreferrer">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/38" target="_blank" rel="noopener noreferrer">Use .x suffix for release branches</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5291" target="_blank" rel="noopener noreferrer">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5284" target="_blank" rel="noopener noreferrer">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5243" target="_blank" rel="noopener noreferrer">update chaps &amp; integration</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5240" target="_blank" rel="noopener noreferrer">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-19-hydra</link>
+            <guid>2023-05-19-hydra</guid>
+            <pubDate>Fri, 19 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the "Coding Standards" for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href="https://github.com/input-output-hk/hydra/pull/863" target="_blank" rel="noopener noreferrer">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href="https://github.com/input-output-hk/hydra/pull/877" target="_blank" rel="noopener noreferrer">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href="https://github.com/input-output-hk/hydra/pull/867" target="_blank" rel="noopener noreferrer">#867</a>.</li><li>Updated our <a href="https://github.com/input-output-hk/hydra/wiki/Coding-Standards" target="_blank" rel="noopener noreferrer">Coding Standards</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing "Option A" <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Integrate spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-17-consensus</link>
+            <guid>2023-05-17-consensus</guid>
+            <pubDate>Wed, 17 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/89" target="_blank" rel="noopener noreferrer">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it's similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we've re-introduced the Genesis State Machine.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-17-mithril</link>
+            <guid>2023-05-17-mithril</guid>
+            <pubDate>Wed, 17 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2318.0" target="_blank" rel="noopener noreferrer"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href="https://github.com/input-output-hk/mithril/issues/907" target="_blank" rel="noopener noreferrer">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href="https://github.com/input-output-hk/mithril/issues/869" target="_blank" rel="noopener noreferrer">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href="https://github.com/input-output-hk/mithril/issues/888" target="_blank" rel="noopener noreferrer">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href="https://github.com/input-output-hk/mithril/issues/893" target="_blank" rel="noopener noreferrer">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href="https://github.com/input-output-hk/mithril/issues/919" target="_blank" rel="noopener noreferrer">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-17-performance-and-tracing</link>
+            <guid>2023-05-17-performance-and-tracing</guid>
+            <pubDate>Wed, 17 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We're preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we're porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we're busy with the handover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>'s default build environment is around the corner, we're setting up our benchmarking cluster to
+handle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This
+also involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we've been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,
+we strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to
+be balanced against resource demand for all our cluster's nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>For our new tracing system, we're currently validating the behaviour of the system after optimizations have been applied. Furthermore, some
+quality-of-life details that have changed required us to revision the system documentation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis">Analysis<a class="hash-link" href="#analysis" title="Direct link to heading">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been
+normally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a
+huge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking
+copmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we've been adjusting
+those profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality
+of the nomad cloud backend.  </p><p>Additionally, we're porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance--tracing-meetup">Performance &amp; Tracing Meetup<a class="hash-link" href="#performance--tracing-meetup" title="Direct link to heading">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive
+days together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.
+Also, it was a great opportunity to finally meet in person.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offboarding">Offboarding<a class="hash-link" href="#offboarding" title="Direct link to heading">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he's handing over all his obligations, which requires reorganisation
+of team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-12-crypto</link>
+            <guid>2023-05-12-crypto</guid>
+            <pubDate>Fri, 12 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream's macros to merge these curves in halo2curves.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href="https://github.com/input-output-hk/cardano-base/pull/408" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href="https://github.com/input-output-hk/cardano-base/pull/405" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href="https://github.com/privacy-scaling-explorations/halo2curves/pull/38" target="_blank" rel="noopener noreferrer">#38</a></li><li>Addition constraint over JubJub merged <a href="https://github.com/input-output-hk/sidechains-zk/pull/10" target="_blank" rel="noopener noreferrer">#10</a></li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-12-goedel</link>
+            <guid>2023-05-12-goedel</guid>
+            <pubDate>Fri, 12 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023
+(<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon
+on 19th June 2023. The papers will be published in EPTCS.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-12-hydra</link>
+            <guid>2023-05-12-hydra</guid>
+            <pubDate>Fri, 12 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release
+of the first mainnet compatible version. Besides this they also addressed
+inconsistencies in rollback handling, added an architecture page to the website,
+reducing the size of logs using event IDs. They also had productive discussions
+with researchers on plans for incremental commits/decommits and had a whiteboard
+session on DeFi and lending protocols. The goals for next week include
+completing the validation of the timed transactions feature, exploring stateless
+observation, refining the Hydra explorer ticket, writing ops instructions and
+troubleshooting, and implementing the first end-to-end journey for external
+commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released first mainnnet compatible version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Added <a href="https://hydra.family/head-protocol/core-concepts/architecture/" target="_blank" rel="noopener noreferrer">architecture page</a> and fixed haddock links on our website <a href="https://github.com/input-output-hk/hydra/pull/838" target="_blank" rel="noopener noreferrer">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href="https://github.com/input-output-hk/hydra/pull/859" target="_blank" rel="noopener noreferrer">#859</a></li><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-04" target="_blank" rel="noopener noreferrer">monthly report for April</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-12-network</link>
+            <guid>2023-05-12-network</guid>
+            <pubDate>Fri, 12 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see
+below).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to
+Handshake contributed by Galois Inc.  We made improvements to our tests (fixed
+a flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and
+<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of
+releasing new package version to <code>CHaP</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers
+(currently operated by IOG, in future also CF and Emurgo).  We designed
+a switch to use ledger peers if the node tip is close enough to the current
+time.  For more details see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query
+server's <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to
+Galois Inc. for implementing it, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4256" target="_blank" rel="noopener noreferrer">#4256</a> and <a href="https://github.com/input-output-hk/ouroboros-network/issues/4538" target="_blank" rel="noopener noreferrer">#4538</a>.  We published new version
+of packages to CHaP <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/253" target="_blank" rel="noopener noreferrer">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will
+not duplicate diffusion errors messages in the log, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4515" target="_blank" rel="noopener noreferrer">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4540" target="_blank" rel="noopener noreferrer">#4540</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4544" target="_blank" rel="noopener noreferrer">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we
+released all the package necessary to build the newest set of packages,
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn't log
+<code>ExitSuccess</code> exceptions, <a href="https://github.com/input-output-hk/ouroboros-consensus/pulls/71" target="_blank" rel="noopener noreferrer">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4395" target="_blank" rel="noopener noreferrer">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">#4539</a>: we don't need to install cryptographic libraries in CI;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4545" target="_blank" rel="noopener noreferrer">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved
+to a new repo;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4546" target="_blank" rel="noopener noreferrer">#4546</a>: we switched to use <a href="https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue" target="_blank" rel="noopener noreferrer">GitHub merge queues</a>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-05-ledger</link>
+            <guid>2023-05-05-ledger</guid>
+            <pubDate>Fri, 05 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.
+For conway, we completed a large structural change that now allows
+for delegation certificates to be parameterized by era, and introducing
+new certificates for the first time since Shelley.
+We also continue to build out our contraint based generators that we will
+use to property test the conway era.
+In particular, we can now generate an entire ledger state and a
+transaction which is balanced with respect to the ledger state.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="conway-certificates">Conway certificates<a class="hash-link" href="#conway-certificates" title="Direct link to heading">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.
+Moreover, there are new certificates in the Conway era to support CIP-1694,
+and MIR certificates have been removed.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3387" target="_blank" rel="noopener noreferrer">pull-3387</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,
+but instead generate ledger states and transactions based on constraints.
+We hit a milestone this week, namely the ability to generate a balanced transaction in the context
+of a ledger state, all based on our ever growing constaint language.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3386" target="_blank" rel="noopener noreferrer">pull-3386</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3393" target="_blank" rel="noopener noreferrer">pull-3393</a> - Performance improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3395" target="_blank" rel="noopener noreferrer">pull-3395</a> - Conway instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3398" target="_blank" rel="noopener noreferrer">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3389" target="_blank" rel="noopener noreferrer">pull-3389</a> - Reduce github pages size</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3390" target="_blank" rel="noopener noreferrer">pull-3390</a> - Reinstate the tickf optimizations</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-05-node-cli-api</link>
+            <guid>2023-05-05-node-cli-api</guid>
+            <pubDate>Fri, 05 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-05-05 - 2023-05-23</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5181" target="_blank" rel="noopener noreferrer">Update libsodium installation instructions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5264" target="_blank" rel="noopener noreferrer">Delete deprecated <code>shelley</code> command group</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5206" target="_blank" rel="noopener noreferrer">Add golden tests for CLI help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5201" target="_blank" rel="noopener noreferrer">Avoid bare IO in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5200" target="_blank" rel="noopener noreferrer">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5198" target="_blank" rel="noopener noreferrer">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5189" target="_blank" rel="noopener noreferrer">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5184" target="_blank" rel="noopener noreferrer">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5120" target="_blank" rel="noopener noreferrer">Simplify socket path code</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5221" target="_blank" rel="noopener noreferrer">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5218" target="_blank" rel="noopener noreferrer">Implement deposit handling when balancing transactions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5217" target="_blank" rel="noopener noreferrer">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5215" target="_blank" rel="noopener noreferrer">Cleanup socket file path code</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5207" target="_blank" rel="noopener noreferrer">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5194" target="_blank" rel="noopener noreferrer">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5191" target="_blank" rel="noopener noreferrer">Expose config reader</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5188" target="_blank" rel="noopener noreferrer">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5175" target="_blank" rel="noopener noreferrer">Fix <code>toEraInMode</code> for conway</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5168" target="_blank" rel="noopener noreferrer">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5096" target="_blank" rel="noopener noreferrer">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5047" target="_blank" rel="noopener noreferrer">Use cardano-api from separate repository</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4684" target="_blank" rel="noopener noreferrer">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5022" target="_blank" rel="noopener noreferrer">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5254" target="_blank" rel="noopener noreferrer">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5242" target="_blank" rel="noopener noreferrer">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5234" target="_blank" rel="noopener noreferrer">Fix cardano-testnet help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5211" target="_blank" rel="noopener noreferrer">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5165" target="_blank" rel="noopener noreferrer">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5128" target="_blank" rel="noopener noreferrer">Create defaultYamlValue for cardano-testnet</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-04-mithril</link>
+            <guid>2023-05-04-mithril</guid>
+            <pubDate>Thu, 04 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/870" target="_blank" rel="noopener noreferrer">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/852" target="_blank" rel="noopener noreferrer">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/871" target="_blank" rel="noopener noreferrer">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/853" target="_blank" rel="noopener noreferrer">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href="https://github.com/input-output-hk/mithril/issues/868" target="_blank" rel="noopener noreferrer">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href="https://github.com/input-output-hk/mithril/issues/878" target="_blank" rel="noopener noreferrer">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/643" target="_blank" rel="noopener noreferrer">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href="https://github.com/input-output-hk/mithril/issues/881" target="_blank" rel="noopener noreferrer">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href="https://github.com/input-output-hk/mithril/issues/873" target="_blank" rel="noopener noreferrer">#873</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-03-consensus</link>
+            <guid>2023-05-03-consensus</guid>
+            <pubDate>Wed, 03 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.
+It seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this
+needs to be confirmed. We started a DoS mitigation handbook and updated our
+conceptual component diagram to guide the Genesis design. We engaged with the
+IOG researchers to work on the Limit on Patience attack vector, work in this
+area is still ongoing. We sketched a design to decouple the CPU load of the node
+from its responsiveness to the socket. Finally, we discussed with Networking our
+approach to lower the performance impact of the BlockFetch decision logic, and
+got green light from them.</p><p>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new
+repository</a>, splitting
+it from the <code>ouroboros-network</code> repository, and released version 0.6 of
+Consensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an
+explanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code
+comments that emphasize certain properties of the decisions the <code>BlockFetch</code>
+logic makes that are helping us confirm that Genesis does not require any
+changes to <code>BlockFetch</code>. We are waiting on input from our former system
+architect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>
+repository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a
+way to address the concern that the Limit on Patiente (LoP) attack vector duty
+cycle is indeed low, but it's still non-trivial to ultimately conclude it's
+sufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its
+responsiveness to the socket, since the LoP is a relatively tight timeout, and
+node performance bugs inducing seconds-worth of latency are unfortunately
+familiar phenomena.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/62" target="_blank" rel="noopener noreferrer">added an
+explanation</a> of
+a question that we had to explain many times about the exact behavior of the
+hardfork combinator forecast horizon.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-03-performance-and-tracing</link>
+            <guid>2023-05-03-performance-and-tracing</guid>
+            <pubDate>Wed, 03 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* Benchmarking: The benchmarks and performance investigations for the new 8.0 release branch are ongoing.]]></description>
+            <content:encoded><![CDATA[<ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,
+we created yet another local reproduction with the workbench's <code>forge-stress</code> benchmark.  </p><p>Currently we're working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and
+subsequent releases.  </p><p>Additionally, we've refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally
+intended to run on a performance-critical codepath. We've worked on improving those, as well as eliminating cases of redundant
+conversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dataflow-documentation">Dataflow documentation<a class="hash-link" href="#dataflow-documentation" title="Direct link to heading">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate
+further development, we're creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="remove-redundant-plutus-flake-input">Remove redundant Plutus flake input<a class="hash-link" href="#remove-redundant-plutus-flake-input" title="Direct link to heading">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,
+we simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.
+This capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along
+with various quality-of-life improvements, has been merged to <code>master</code>.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-05-01-db-sync</link>
+            <guid>2023-05-01-db-sync</guid>
+            <pubDate>Mon, 01 May 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1389" target="_blank" rel="noopener noreferrer">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1382" target="_blank" rel="noopener noreferrer">#1382</a></li><li>Using the cache in more places to reduce recourses usage
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1396" target="_blank" rel="noopener noreferrer">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1398" target="_blank" rel="noopener noreferrer">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-28-crypto</link>
+            <guid>2023-04-28-crypto</guid>
+            <pubDate>Fri, 28 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto's library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href="https://github.com/input-output-hk/cardano-base/pull/384" target="_blank" rel="noopener noreferrer">#384</a></li><li>Open PR for including test vectors created with <a href="https://github.com/zkcrypto/bls12_381" target="_blank" rel="noopener noreferrer">zkscrypto</a>'s library, <a href="https://github.com/input-output-hk/cardano-base/pull/397" target="_blank" rel="noopener noreferrer">PR#397</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href="https://github.com/input-output-hk/cardano-base/pull/388" target="_blank" rel="noopener noreferrer">PR#388</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE's repo</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-28-goedel</link>
+            <guid>2023-04-28-goedel</guid>
+            <pubDate>Fri, 28 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros
+Praos to a newer foundation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-28-network</link>
+            <guid>2023-04-28-network</guid>
+            <pubDate>Fri, 28 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href="https://hackage.haskell.org/package/io-classes" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>,</li><li><a href="https://hackage.haskell.org/package/io-classes-mtl" target="_blank" rel="noopener noreferrer"><code>io-classes-mtl</code></a></li><li><a href="https://hackage.haskell.org/package/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-stm" target="_blank" rel="noopener noreferrer"><code>strict-stm</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-mvar" target="_blank" rel="noopener noreferrer"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href="https://engineering.iog.io/2023-04-14-io-sim-annoucement" target="_blank" rel="noopener noreferrer">blog post</a>.  We made progress
+also on another blog post which will describes the design of the P2P networking
+layer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made
+<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of
+<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros-Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4281" target="_blank" rel="noopener noreferrer">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4527" target="_blank" rel="noopener noreferrer">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4532" target="_blank" rel="noopener noreferrer">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>
+support), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</li><li>Renamed a module: <a href="https://github.com/input-output-hk/io-sim/pull/88" target="_blank" rel="noopener noreferrer">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/io-sim/pull/83" target="_blank" rel="noopener noreferrer">io-sim#83</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:
+<a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/227" target="_blank" rel="noopener noreferrer">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/29" target="_blank" rel="noopener noreferrer">typed-protocols#29</a>.</li></ul>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-27-hydra</link>
+            <guid>2023-04-27-hydra</guid>
+            <pubDate>Thu, 27 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the
+report which likely is published next week. They put the spec into the
+repository and website, addressed a user issue and fixed the TUI peer list.
+Furthermore, they updated dependencies, conducted a Twitter space on Auctions
+use cases, covered the rollback bug with tests and implemented a solution.
+Looking ahead, their goals for next week include releasing 0.10.0, implementing
+timed transactions support, writing a Query API ADR, and grooming work items
+like off-chain benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository
+<a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and published on
+<a href="https://hydra.family/head-protocol/unstable/core-concepts/specification" target="_blank" rel="noopener noreferrer">the
+website</a></li><li>Groom and addressed user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href="https://github.com/input-output-hk/hydra/issues/832" target="_blank" rel="noopener noreferrer">#832</a></li><li>Groom off-chain benchmarks idea <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-21-hydra</link>
+            <guid>2023-04-21-hydra</guid>
+            <pubDate>Fri, 21 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state
+machine continuity on-chain, discussing voting project solutions, exploring
+adding Hydra support to kupo, and improving API navigation with a sidebar. The
+team also updated dependencies and fixed issues in their test suites. Moving
+forward, the team plans to hold the next monthly review meeting, address a user
+issue, prepare for the 0.10.0 release, and work on a dirt road fix for the
+rollbacks issue with proper test coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href="https://github.com/input-output-hk/hydra/pull/777" target="_blank" rel="noopener noreferrer">#777</a>.</li><li>Took part in a twitter space on <a href="https://twitter.com/thepizzaknight_/status/1647833904282320896" target="_blank" rel="noopener noreferrer">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href="https://hydra.family/head-protocol/unstable/api-reference/" target="_blank" rel="noopener noreferrer">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting (join via <a href="https://discord.gg/inputoutput?event=1097863746216538194" target="_blank" rel="noopener noreferrer">Discord</a> or <a href="https://www.addevent.com/event/ck16794110" target="_blank" rel="noopener noreferrer">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a>.</li><li>Put the spec into the repo <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and prepare release 0.10.0.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-21-ledger</link>
+            <guid>2023-04-21-ledger</guid>
+            <pubDate>Fri, 21 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.
+In particular, the conway era now supports Plutus V3.
+Finally, we made small improvements to the ledger API and now host
+our Haskell code documentation (haddocks) on github pages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3365" target="_blank" rel="noopener noreferrer">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3368" target="_blank" rel="noopener noreferrer">pull-3368</a>] - Conway genesis fix.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3369" target="_blank" rel="noopener noreferrer">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3372" target="_blank" rel="noopener noreferrer">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3384" target="_blank" rel="noopener noreferrer">pull-3384</a>] - Rename.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haddocks-hosted-on-github-pages">Haddocks hosted on github pages<a class="hash-link" href="#haddocks-hosted-on-github-pages" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3385" target="_blank" rel="noopener noreferrer">pull-3385</a>] </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-improvements-to-the-api">Small improvements to the API<a class="hash-link" href="#small-improvements-to-the-api" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3366" target="_blank" rel="noopener noreferrer">pull-3366</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3367" target="_blank" rel="noopener noreferrer">pull-3367</a>] Fix cost model json instances.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3371" target="_blank" rel="noopener noreferrer">pull-3371</a>] UMap cleanup.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3373" target="_blank" rel="noopener noreferrer">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3375" target="_blank" rel="noopener noreferrer">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3377" target="_blank" rel="noopener noreferrer">pull-3377</a>] Fix cabal warnings.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3383" target="_blank" rel="noopener noreferrer">pull-3383</a>] Fix multi-asset test.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-20-mithril</link>
+            <guid>2023-04-20-mithril</guid>
+            <pubDate>Thu, 20 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href="https://github.com/input-output-hk/mithril/issues/816" target="_blank" rel="noopener noreferrer">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href="https://github.com/input-output-hk/mithril/issues/814" target="_blank" rel="noopener noreferrer">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href="https://github.com/input-output-hk/mithril/issues/829" target="_blank" rel="noopener noreferrer">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href="https://github.com/input-output-hk/mithril/issues/847" target="_blank" rel="noopener noreferrer">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href="https://github.com/input-output-hk/mithril/issues/848" target="_blank" rel="noopener noreferrer">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-20-node-cli-api</link>
+            <guid>2023-04-20-node-cli-api</guid>
+            <pubDate>Thu, 20 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-04-20 - 2023-05-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5136" target="_blank" rel="noopener noreferrer">Modify golden test functions to automatically create parent directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5132" target="_blank" rel="noopener noreferrer">SPO on-chain poll commands adjustments</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5119" target="_blank" rel="noopener noreferrer">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5172" target="_blank" rel="noopener noreferrer"><code>--out-file</code> option for governance commands</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5130" target="_blank" rel="noopener noreferrer">UTC Time to slots conversion function</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5157" target="_blank" rel="noopener noreferrer">Update CHaP to get latest ledger with performance fix</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4854" target="_blank" rel="noopener noreferrer">Integration with Peer Sharing</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-19-consensus</link>
+            <guid>2023-04-19-consensus</guid>
+            <pubDate>Wed, 19 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism
+for UTxO-HD, and modifications to the mempool benchmarks that this prototype
+requires.</p><p>On the Genesis front we validated that the fragment size calculation in
+<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it
+we will get performance that is acceptably close to that of the baseline. We
+also started investigating a performance fix that does not alter the existing
+baseline behavior too much. In addition we reviewed our Genesis attack vector
+calculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving
+our release process, to support the Cardano-wide efforts in this area. We also
+performed an analysis on the number of file descriptors that consensus use. This
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-19-performance-and-tracing</link>
+            <guid>2023-04-19-performance-and-tracing</guid>
+            <pubDate>Wed, 19 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* Benchmarking: We performed a series of benchmarks aimed at the new 8.0 release branch and built a timeline from the 1.35 releases to that branch.]]></description>
+            <content:encoded><![CDATA[<ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We're working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we've laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the
+<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial
+in locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of
+benchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still
+ongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we're working with the implementation
+of data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational
+burden inside the node needs to be kept to an absolute minimum. We're currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer
+feature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-manifest">Detailed manifest<a class="hash-link" href="#detailed-manifest" title="Direct link to heading">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.
+These dependencies come from different package sources, have different versioning policies, and an identical package version might provide different
+performance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated
+by making all component bumps visible and accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-profiling-inside-workbench">GHC profiling inside workbench<a class="hash-link" href="#ghc-profiling-inside-workbench" title="Direct link to heading">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of
+profiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already
+been merged to <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.
+This results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Incident Report]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-17-ledger</link>
+            <guid>2023-04-17-ledger</guid>
+            <pubDate>Mon, 17 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Incident reporting: Cardano block production temporary outage]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="incident-reporting-cardano-block-production-temporary-outage">Incident reporting: Cardano block production temporary outage<a class="hash-link" href="#incident-reporting-cardano-block-production-temporary-outage" title="Direct link to heading">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.
+The investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.
+Following successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.
+With the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="further-details">Further Details<a class="hash-link" href="#further-details" title="Direct link to heading">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href="https://www.314pool.com/post/cardano-post-mortem-1" target="_blank" rel="noopener noreferrer">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-14-goedel</link>
+            <guid>2023-04-14-goedel</guid>
+            <pubDate>Fri, 14 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has submitted two papers for publication, carried
+out consultancy with other teams and has an opening for an intern.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-14-hydra</link>
+            <guid>2023-04-14-hydra</guid>
+            <pubDate>Fri, 14 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer
+tooling, and improving the API for voting use cases. They reviewed progress on
+auction, payments, and voting projects and made worked on reproducing a bug with
+handling rollbacks. Moving forward, the team plans to update dependencies,
+implement a dirt road fix for the rollbacks bug, and explore adding Hydra
+support to kupo.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node
+used in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href="https://github.com/input-output-hk/hydra/pull/808" target="_blank" rel="noopener noreferrer">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href="https://github.com/input-output-hk/hydra/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-07-hydra</link>
+            <guid>2023-04-07-hydra</guid>
+            <pubDate>Fri, 07 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published the monthly report for March, created
+separate links for different versions of documentation, and clarified potential
+solutions for the Rollbacks bug. The team also discussed Query API requests for
+the Hydra Voting project and met with community members to answer questions
+about Hydra. Moving forward, the team plans to integrate the specification into
+the repository, implement a short-term fix for the Rollbacks issue, and draft a
+Query API ADR.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published monthly reports on <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href="https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">released</a> vs. <a href="https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-06-mithril</link>
+            <guid>2023-04-06-mithril</guid>
+            <pubDate>Thu, 06 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href="https://github.com/input-output-hk/mithril/issues/817" target="_blank" rel="noopener noreferrer">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href="https://github.com/input-output-hk/mithril/issues/827" target="_blank" rel="noopener noreferrer">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href="https://github.com/input-output-hk/mithril/issues/828" target="_blank" rel="noopener noreferrer">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/824" target="_blank" rel="noopener noreferrer">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href="https://github.com/input-output-hk/mithril/issues/843" target="_blank" rel="noopener noreferrer">#843</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-05-consensus</link>
+            <guid>2023-04-05-consensus</guid>
+            <pubDate>Wed, 05 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are
+now working on improving the DB lock mechanism to improve performance. We also
+introduced several improvements to the file system abstraction and simulation
+layer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and
+<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,
+soliciting feedback from Networking Team and IOG Researchers. We also opened up
+a PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being
+reviewed.</p><p>On the support front, we got a new Consensus version that can use different
+fundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was
+discovered by our <code>QuickCheck</code> property tests.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-05-node-cli-api</link>
+            <guid>2023-04-05-node-cli-api</guid>
+            <pubDate>Wed, 05 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-04-05 - 2023-04-19</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5112" target="_blank" rel="noopener noreferrer">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5061" target="_blank" rel="noopener noreferrer">Remove --stake-address option from stake-address build</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5059" target="_blank" rel="noopener noreferrer">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5053" target="_blank" rel="noopener noreferrer">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5046" target="_blank" rel="noopener noreferrer">Move parsers to reusable location</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --socket-path cli option</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5108" target="_blank" rel="noopener noreferrer">CIP-1694 make space for DRep certificates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5105" target="_blank" rel="noopener noreferrer">File type to track the content and direction of files</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5087" target="_blank" rel="noopener noreferrer">Fix import warning</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5086" target="_blank" rel="noopener noreferrer">Expose UsingRawBytes et al types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5085" target="_blank" rel="noopener noreferrer">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5072" target="_blank" rel="noopener noreferrer">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5071" target="_blank" rel="noopener noreferrer">New genCardanoKeyWitness function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5069" target="_blank" rel="noopener noreferrer">Replace roundtripCBOR with trippingCbor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5064" target="_blank" rel="noopener noreferrer">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5063" target="_blank" rel="noopener noreferrer">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5057" target="_blank" rel="noopener noreferrer">Define Functor instance for FileError</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5049" target="_blank" rel="noopener noreferrer">Split serialisation from IO</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5115" target="_blank" rel="noopener noreferrer">Master build failure fixes</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5106" target="_blank" rel="noopener noreferrer">Allow renamed fields to exist if values the same</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5091" target="_blank" rel="noopener noreferrer">workbench: updates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5084" target="_blank" rel="noopener noreferrer">Delete duplicate packages sort packages and imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5110" target="_blank" rel="noopener noreferrer">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5099" target="_blank" rel="noopener noreferrer">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5083" target="_blank" rel="noopener noreferrer">Ergonomic directory creation code in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5036" target="_blank" rel="noopener noreferrer">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">Integrate latest ledger dependencies</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-04-05-performance-and-tracing</link>
+            <guid>2023-04-05-performance-and-tracing</guid>
+            <pubDate>Wed, 05 Apr 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* Benchmarking: We worked on adjusting our infrastructure to the new 8.0 release branch and performed a (very) early run.]]></description>
+            <content:encoded><![CDATA[<ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We're profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>
+helped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very
+detailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing
+the highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we've worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions
+for tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance
+analysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we've created a profile family for the workbench that's specifically aimed at measuring and comparing tracing system configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-library">Plutus library<a class="hash-link" href="#plutus-library" title="Direct link to heading">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.
+This will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.
+It is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is
+being improved to minimize any friction for the backend user.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-31-crypto</link>
+            <guid>2023-03-31-crypto</guid>
+            <pubDate>Fri, 31 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381's PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch merged <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a" target="_blank" rel="noopener noreferrer">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f" target="_blank" rel="noopener noreferrer">JubJub</a> to our branch of halo2curves </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Minor reorg <a href="https://github.com/input-output-hk/musig2/pull/42" target="_blank" rel="noopener noreferrer">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">PR#</a></li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-31-goedel</link>
+            <guid>2023-03-31-goedel</guid>
+            <pubDate>Fri, 31 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final drafts of two papers
+for internal review and planning next steps of analysis of consensus
+design refiniments.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for
+distributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-31-hydra</link>
+            <guid>2023-03-31-hydra</guid>
+            <pubDate>Fri, 31 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The
+semi-automated smoke tests and some missing documentation is still preventing
+from calling that fully done. They fixed smaller issues and made a step in the
+Head protocol more robust. Besides development, they met with interested people
+from the community who want to get started collaborating on communication and
+marketing materials.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href="https://github.com/input-output-hk/hydra/issues/560" target="_blank" rel="noopener noreferrer">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Completed configurable API feature <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-31-ledger</link>
+            <guid>2023-03-31-ledger</guid>
+            <pubDate>Fri, 31 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We are still heavily involved in work related to preparing the next release.
+The other main thing we have worked on is experimentation about how we will
+handle the DRep stake distribution for CIP-1694 in the conway ledger era.
+Lastly, we merged a fix for
+<a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>
+into our main branch (there will be a post-mortem shortly).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support-for-the-next-release">Support for the next release<a class="hash-link" href="#support-for-the-next-release" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a> - Added helper functions for the CLI.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="experiments-for-drep-stake-distribution">Experiments for DRep stake distribution<a class="hash-link" href="#experiments-for-drep-stake-distribution" title="Direct link to heading">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.
+We would like to be able to use the current stake distribution at the epoch boundary
+for DRep voting so that people can always vote themselves in time for any proposal.
+To this end, we have a prototype of an incremental computation based on the incremental
+lambda calculus, together with tests and benchmarks (which are very promising).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate
+the new incremental computations.
+We have two draft PRs up for possibles solution.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-and-bug-fixes">Technical debt and bug fixes<a class="hash-link" href="#technical-debt-and-bug-fixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a> - A fix <a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a> - Removal of code duplication.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="documentation-changes">Documentation changes<a class="hash-link" href="#documentation-changes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a> - Rename "optional datums" with "supplemental datums" in the alonzo spec.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[System Test Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-27-system-test</link>
+            <guid>2023-03-27-system-test</guid>
+            <pubDate>Mon, 27 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html" target="_blank" rel="noopener noreferrer">1.35.5</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html" target="_blank" rel="noopener noreferrer">1.35.6</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul>]]></content:encoded>
+            <category>system-test</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-24-hydra</link>
+            <guid>2023-03-24-hydra</guid>
+            <pubDate>Fri, 24 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review
+meeting for March. They demonstrated a Hydra Head on mainnet, which was running
+the hydraw demo application. While this marks an important milestone, they also
+emphasized that more features are still to be added as needed for applications
+to run on Hydra. Besides this, the roadmap is getting cleaned up to encourage
+discussions and provide more space for user requests.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting <a href="https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392" target="_blank" rel="noopener noreferrer">slides</a>/<a href="https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c" target="_blank" rel="noopener noreferrer">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a> and investigated a potential bug in rollback handling <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-23-db-sync</link>
+            <guid>2023-03-23-db-sync</guid>
+            <pubDate>Thu, 23 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on
+technical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an
+epoch, but also the first epoch of the last epoch.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1367" target="_blank" rel="noopener noreferrer">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn't rollback and caused wrong values
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1370" target="_blank" rel="noopener noreferrer">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even
+though it was never used. Also refactored the no ledger part of the codebase.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1378" target="_blank" rel="noopener noreferrer">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or
+disables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync
+mainnet in hours.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1379" target="_blank" rel="noopener noreferrer">#1379</a></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-23-mithril</link>
+            <guid>2023-03-23-mithril</guid>
+            <pubDate>Thu, 23 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2310.0" target="_blank" rel="noopener noreferrer"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the creation of a stake distribution service <a href="https://github.com/input-output-hk/mithril/issues/799" target="_blank" rel="noopener noreferrer">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href="https://github.com/input-output-hk/mithril/issues/810" target="_blank" rel="noopener noreferrer">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href="https://github.com/input-output-hk/mithril/issues/804" target="_blank" rel="noopener noreferrer">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href="https://github.com/input-output-hk/mithril/issues/807" target="_blank" rel="noopener noreferrer">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href="https://github.com/input-output-hk/mithril/issues/820" target="_blank" rel="noopener noreferrer">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href="https://github.com/input-output-hk/mithril/issues/801" target="_blank" rel="noopener noreferrer">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/803" target="_blank" rel="noopener noreferrer">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/818" target="_blank" rel="noopener noreferrer">#818</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-22-consensus</link>
+            <guid>2023-03-22-consensus</guid>
+            <pubDate>Wed, 22 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD
+prototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>
+package, which provides a file-system abstraction layer that can be used for
+testing and simulation. This makes the Consensus code base smaller, while
+providing a package that the community can reuse and contribute to. We also
+fixed a failing property test related to iterators. We are also working on
+mempool and VRF improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-details">Low-level details<a class="hash-link" href="#low-level-details" title="Direct link to heading">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4425" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/1" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/2" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4460" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href="https://github.com/input-output-hk/fs-sim/pull/5" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/6" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/7" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/8" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/20" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/150" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-22-node-cli-api</link>
+            <guid>2023-03-22-node-cli-api</guid>
+            <pubDate>Wed, 22 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-03-22 - 2023-04-05</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5041" target="_blank" rel="noopener noreferrer">Remove unused error constructors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5040" target="_blank" rel="noopener noreferrer">Remove use of AcquireFailure type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5038" target="_blank" rel="noopener noreferrer">Simplify implementation of executeQueryAnyMode</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5002" target="_blank" rel="noopener noreferrer">Script data serialisation</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4956" target="_blank" rel="noopener noreferrer">Guard against overflows in Shelley TxIns</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyContent and related types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5011" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test.</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-22-performance-and-tracing</link>
+            <guid>2023-03-22-performance-and-tracing</guid>
+            <pubDate>Wed, 22 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.]]></description>
+            <content:encoded><![CDATA[<ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we're currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We're working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we're laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing">New tracing<a class="hash-link" href="#new-tracing" title="Direct link to heading">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe
+a slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-rts-parametrization">GHC RTS parametrization<a class="hash-link" href="#ghc-rts-parametrization" title="Direct link to heading">​</a></h3><p>We're currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies
+on different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we're refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we're currently undertaking an effort to multi-layered documentation: a condensed version, as well
+as a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points
+for users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we're laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will
+increase confidence in specific metrics.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis
+is patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We're confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-21-network</link>
+            <guid>2023-03-21-network</guid>
+            <pubDate>Tue, 21 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P
+functionality.</p><p>We received reports from some SPOs who encountered problems with their non
+P2P block producing nodes not being able to connect to their P2P relay.  Karl
+Knutsson (from Cardano Foundation) reproduced this issue between two nodes (a
+non P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed
+it and found a bug in the legacy non p2p code.  The bug is only possible to
+trigger with a P2P node which is binding its outbound connection port to
+a fixed IP address and port (default in p2p).  A possible solution was found.
+For more information see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4465" target="_blank" rel="noopener noreferrer">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no
+longer available as a standalone binary, but instead it will become part of
+<code>cardano-cli</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger
+peers to the outbound governor, implemented tests and fixed found issues
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>).  We also made the information if a given peer plays the role of
+a big ledger peer to the mini-protocols.  This will allow to modify
+mini-protocol applications for such peers.   As part of this functionality we
+refactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see
+<a href="https://github.com/input-output-hk/io-sim/pull/73" target="_blank" rel="noopener noreferrer">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in
+<code>cardano-node</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">#4902</a>).</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-17-crypto</link>
+            <guid>2023-03-17-crypto</guid>
+            <pubDate>Fri, 17 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381's PR approved, only blocker is Windows' CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Merged <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch approved <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. Blocker is Windown's CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href="https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md" target="_blank" rel="noopener noreferrer">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can't use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it's C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-17-hydra</link>
+            <guid>2023-03-17-hydra</guid>
+            <pubDate>Fri, 17 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the
+hydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added
+some detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA
+per commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra
+Head on the Cardano mainnet, ideally just in time for the monthly review
+meeting. See the hydra channels on the IOG Technical Community discord server
+for details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node
+<a href="https://github.com/input-output-hk/hydra/pull/763" target="_blank" rel="noopener noreferrer">#763</a></li><li>Pay back funds to faucet after smoke-test run
+<a href="https://github.com/input-output-hk/hydra/pull/773" target="_blank" rel="noopener noreferrer">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet
+<a href="https://github.com/input-output-hk/hydra/pull/775" target="_blank" rel="noopener noreferrer">#775</a></li><li>Created golden tests to assure the script hash stays the same between
+changes <a href="https://github.com/input-output-hk/hydra/pull/772" target="_blank" rel="noopener noreferrer">#772</a></li><li>Removed hardcoded error codes in plutus scripts
+<a href="https://github.com/input-output-hk/hydra/pull/768" target="_blank" rel="noopener noreferrer">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state
+<a href="https://github.com/input-output-hk/hydra/pull/767" target="_blank" rel="noopener noreferrer">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-17-ledger</link>
+            <guid>2023-03-17-ledger</guid>
+            <pubDate>Fri, 17 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made further progress on the conway ledger era.
+In particular, we expanded the ledger API significantly, including lots of governance features.
+We also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed
+technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-ledger-api">Expanded ledger API<a class="hash-link" href="#expanded-ledger-api" title="Direct link to heading">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-rules">Conway ledger rules<a class="hash-link" href="#conway-ledger-rules" title="Direct link to heading">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.
+Moreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="incremental-spodrep-stake-distribution-computation">Incremental SPO/DRep stake distribution computation<a class="hash-link" href="#incremental-spodrep-stake-distribution-computation" title="Direct link to heading">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus
+to maintain several of the stake distributions incrementally.
+For the per-SPO distribution, this is a performance improvement.
+For the (conway) per-DRep distribution, this is will allow those who have delegated their votes
+to a DRep to have time to react to any votes that they disapprove of.
+(Sorry, no code to share just yet, more to come.)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>Improved CBOR testing facilities <a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a></li><li>GitHub actions improvement <a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3323</a></li><li>Minor OCert improvements <a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a></li><li>Remove duplication <a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a> </li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-16-goedel</link>
+            <guid>2023-03-16-goedel</guid>
+            <pubDate>Thu, 16 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers
+improving the deltaQ tutorial, consulting on performance design, and
+the final version of the Djed paper.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial
+improvement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation
+proofs for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-10-hydra</link>
+            <guid>2023-03-10-hydra</guid>
+            <pubDate>Fri, 10 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a
+Hydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved
+the test suite of the <code>hydra-plutus</code> scripts. The specification is constantly
+getting improved upon reviewer feedback on overleaf - this week the graphical
+notation was refined to be more transaction-focused.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href="https://github.com/input-output-hk/hydra/issues/737" target="_blank" rel="noopener noreferrer">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href="https://github.com/input-output-hk/hydra/pull/715" target="_blank" rel="noopener noreferrer">#715</a></li><li>Improved our mutation test suite to all expected errors <a href="https://github.com/input-output-hk/hydra/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-09-mithril</link>
+            <guid>2023-03-09-mithril</guid>
+            <pubDate>Thu, 09 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href="https://github.com/input-output-hk/mithril/issues/752" target="_blank" rel="noopener noreferrer">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href="https://github.com/input-output-hk/mithril/issues/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Worked on handling the API version with an era switch <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href="https://github.com/input-output-hk/mithril/issues/665" target="_blank" rel="noopener noreferrer">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href="https://github.com/input-output-hk/mithril/issues/769" target="_blank" rel="noopener noreferrer">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href="https://github.com/input-output-hk/mithril/issues/791" target="_blank" rel="noopener noreferrer">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-08-consensus</link>
+            <guid>2023-03-08-consensus</guid>
+            <pubDate>Wed, 08 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD
+prototype, and introducing improvements to the <code>lmdb</code> related packages. In
+particular we identified an opportunity to gain performance by handling locks in
+a more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and
+Researchers caught. We also came op with a road map for not only testing the
+Genesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created
+component-level micro-benchmarks for adding transactions to the mempool. The
+results of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href="https://input-output-hk.github.io/ouroboros-consensus/" target="_blank" rel="noopener noreferrer">web
+page</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>
+repository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time
+GitHub actions take in <code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a
+result of the first round of sytem-level benchmarks, we identified an
+opportunity to optimise the way we handle locks to improve performance
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4393" target="_blank" rel="noopener noreferrer">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/19" target="_blank" rel="noopener noreferrer">New tests</a> for read-only transaction handles.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/18" target="_blank" rel="noopener noreferrer">New functions</a> and <a href="https://github.com/input-output-hk/lmdb-simple/pull/13" target="_blank" rel="noopener noreferrer">data types</a>.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/11" target="_blank" rel="noopener noreferrer">Updates</a> to support improved type safety and smaller constraints in
+the UTxO HD prototype.</li><li>Windows and MacOS <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">CI support</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in
+the Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early
+milestones that are applicable to today's master branch, ie tests that are
+useful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for
+the Honest leader schedule and one as-aggressive-as-possible Adversarial
+leader schedule that together satisfy the Praos properties that the Consensus
+design takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves
+differently in the baseline compared to the prototype, and we are close to
+having a full picture of how the Consensus components interact during bulk sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4400" target="_blank" rel="noopener noreferrer">created</a> component-level micro-benchmarks for adding transactions
+to the mempool. We plan on extending this to more mempool actions and different
+types of blocks. We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4422" target="_blank" rel="noopener noreferrer">store</a> the benchmark data to make it available
+to the GitHub action that <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/12" target="_blank" rel="noopener noreferrer">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4429" target="_blank" rel="noopener noreferrer">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4423" target="_blank" rel="noopener noreferrer">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus
+packages.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We finished moving the Consensus documentation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4374" target="_blank" rel="noopener noreferrer">from</a>
+<code>ouroboros-network</code> <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">to</a> <code>ouroboros-consensus</code>, in preparation for
+migrating the code to the latter repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4412" target="_blank" rel="noopener noreferrer">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4421" target="_blank" rel="noopener noreferrer">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,
+thereby reducing the time CI jobs take.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-08-node-cli-api</link>
+            <guid>2023-03-08-node-cli-api</guid>
+            <pubDate>Wed, 08 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-03-08 - 2023-03-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes and some refactoring </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4958" target="_blank" rel="noopener noreferrer">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5003" target="_blank" rel="noopener noreferrer">Add missing imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5001" target="_blank" rel="noopener noreferrer">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4967" target="_blank" rel="noopener noreferrer">Remove unnecessary functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4953" target="_blank" rel="noopener noreferrer">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4686" target="_blank" rel="noopener noreferrer">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4683" target="_blank" rel="noopener noreferrer">Derive Eq instance for AcquiringFailure</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4682" target="_blank" rel="noopener noreferrer">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4344" target="_blank" rel="noopener noreferrer">Remove unnecessary validation of Data</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3775" target="_blank" rel="noopener noreferrer">Remove hint of "string" support for ScriptData</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4988" target="_blank" rel="noopener noreferrer">Conway hard forks on prot-ver 9</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4968" target="_blank" rel="noopener noreferrer">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4921" target="_blank" rel="noopener noreferrer">Take all dependencies from Hackage or CHaP</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4729" target="_blank" rel="noopener noreferrer">fix cardano-testnet Babbage genesis.json</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-08-performance-and-tracing</link>
+            <guid>2023-03-08-performance-and-tracing</guid>
+            <pubDate>Wed, 08 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.]]></description>
+            <content:encoded><![CDATA[<ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis-pipeline">Analysis pipeline<a class="hash-link" href="#analysis-pipeline" title="Direct link to heading">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better
+differentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.
+Additionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking
+data more easily accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we're currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we've begun working on a small visualization demo and interactive API documentation. Those will enable
+third parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make
+the switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-03-crypto</link>
+            <guid>2023-03-03-crypto</guid>
+            <pubDate>Fri, 03 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Bumped to version <a href="https://crates.io/crates/kes-summed-ed25519/0.2.0" target="_blank" rel="noopener noreferrer">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href="https://github.com/input-output-hk/mithril/pull/773" target="_blank" rel="noopener noreferrer">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href="https://github.com/input-output-hk/mithril/pull/774" target="_blank" rel="noopener noreferrer">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. 	</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-03-goedel</link>
+            <guid>2023-03-03-goedel</guid>
+            <pubDate>Fri, 03 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, improving the deltaQ tutorial, consulting on
+performance design, and the Djed paper has been accepted for
+publication.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ
+tutorial based on experience with systems that manage risk at
+multiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency
+laws for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>"Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin
+Protocol" has been accepted for publication at IEEE ICBC 2023</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-03-hydra</link>
+            <guid>2023-03-03-hydra</guid>
+            <pubDate>Fri, 03 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version
+<a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a> - a version
+of the <code>hydra-node</code> with fully specified behavior of on-chain scripts and
+off-chain head-logic, decreased costs for opening/closing a Head and scalable
+contestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">monthly
+report</a> of the Hydra project
+and conducted a review meeting with an increasingly wider audience. The team
+plans to extend invitations through the new Hydra
+<a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> discord channel for the next
+months, stay tuned!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with report published <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">on website</a></li><li>Fixed smoke tests <a href="https://github.com/input-output-hk/hydra/pull/726" target="_blank" rel="noopener noreferrer">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href="https://github.com/input-output-hk/hydra/pull/748" target="_blank" rel="noopener noreferrer">#748</a> + head reference script <a href="https://github.com/input-output-hk/hydra/pull/701" target="_blank" rel="noopener noreferrer">#701</a>)</li><li>Released version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li><li>New discord category with <a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href="https://github.com/orgs/input-output-hk/projects/21/views/26" target="_blank" rel="noopener noreferrer">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-03-ledger</link>
+            <guid>2023-03-03-ledger</guid>
+            <pubDate>Fri, 03 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger
+work into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-rules">Conway rules<a class="hash-link" href="#conway-rules" title="Direct link to heading">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec
+with respect to the ratification and enactment logic.</p><p>See the notes in <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a> for more details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing
+support for the main ledger properties.
+The new constraint based generators can now generate full ledger states with what is probably
+very close to the real constraints (if anything, it is under constrained).
+Next we will work on generating a transaction in the context of a ledger state, which would allow
+us to actually start using these generators for real tests.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="preparing-a-release-now-with-proper-versioning">Preparing a release, now with proper versioning<a class="hash-link" href="#preparing-a-release-now-with-proper-versioning" title="Direct link to heading">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new
+version of consensus, using CHaPs.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are
+lexicographically ordered in the Plutus script context. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation
+(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>.</li><li>We improved our nightly tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-03-02-network</link>
+            <guid>2023-03-02-network</guid>
+            <pubDate>Thu, 02 Mar 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing
+forward implementation of eclipse evasion.  We also found a bug in our
+simulation testing setup (in integration of test node).  We also overviewed the
+work on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and
+<code>ouroboros-network-protocols-0.3.0.0</code> to <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/147" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to
+configure inbound connection limits, see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it's
+validation of DNS names, IP address &amp; ports when registering a stake pool
+should be more strict to protect against common mistakes which we identified on
+the chain.  See <a href="https://github.com/input-output-hk/cardano-node/issues/4929" target="_blank" rel="noopener noreferrer">issue #4929</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-work-log">Detailed work log<a class="hash-link" href="#detailed-work-log" title="Direct link to heading">​</a></h2><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> we fixed two bugs in peer state actions.  First one results in
+a busy loop if demotion from hot to warm times outs.  This busy loop is
+eventually exited when mux exits (we reported this in our previous report).
+This fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm
+-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixed a bug in a node only used in simulation which
+resulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the
+review process, we realised that the header-body split in the simulated node
+requires further work (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a>, which is under review).</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also extend our generators, which together with the above fix,
+cover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays
+similar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across
+simulated restarts) store of blocks which does chain selection.  This ensures
+that the simulated node is using <code>block-fetch</code> to download blocks announced by
+<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">PR #4019</a> - peer sharing.</p><p>We also fixed <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue #4370</a> - a connection manager test failure, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4384" target="_blank" rel="noopener noreferrer">PR #4384</a>.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-24-hydra</link>
+            <guid>2023-02-24-hydra</guid>
+            <pubDate>Fri, 24 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the
+implementation with the specification. More over, they have groomed a plan to
+make Hydra Mainnet compatible. Also, they continue moving forward with the
+internal auditing and have published some auditing guidelines to receive
+contributions from the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> (what is
+remaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec
+<a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> and drafted a
+0.10.0 version</li><li>Added a tutorial by <a href="https://github.com/perturbing/" target="_blank" rel="noopener noreferrer">@perturbing</a> to the
+website <a href="https://hydra.family/head-protocol/docs/tutorial/" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Published auditing guidelines
+<a href="https://hydra.family/head-protocol/audit-guidelines" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Made hydra-node work for macos
+<a href="https://github.com/input-output-hk/hydra/issues/746" target="_blank" rel="noopener noreferrer">#746</a> and added support
+for building on aarch64
+<a href="https://github.com/input-output-hk/hydra/issues/673" target="_blank" rel="noopener noreferrer">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-23-mithril</link>
+            <guid>2023-02-23-mithril</guid>
+            <pubDate>Thu, 23 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href="https://github.com/input-output-hk/mithril/issues/718" target="_blank" rel="noopener noreferrer">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href="https://github.com/input-output-hk/mithril/issues/738" target="_blank" rel="noopener noreferrer">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href="https://github.com/input-output-hk/mithril/issues/740" target="_blank" rel="noopener noreferrer">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href="https://github.com/input-output-hk/mithril/issues/741" target="_blank" rel="noopener noreferrer">#741</a></li><li>Completed the creation of the signer registration event <a href="https://github.com/input-output-hk/mithril/issues/742" target="_blank" rel="noopener noreferrer">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href="https://github.com/input-output-hk/mithril/issues/743" target="_blank" rel="noopener noreferrer">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href="https://github.com/input-output-hk/mithril/issues/732" target="_blank" rel="noopener noreferrer">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/755" target="_blank" rel="noopener noreferrer">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href="https://github.com/input-output-hk/mithril/issues/760" target="_blank" rel="noopener noreferrer">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href="https://github.com/input-output-hk/mithril/issues/757" target="_blank" rel="noopener noreferrer">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/730" target="_blank" rel="noopener noreferrer">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href="https://github.com/input-output-hk/mithril/issues/765" target="_blank" rel="noopener noreferrer">#765</a></li></ul></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-23-performance-and-tracing</link>
+            <guid>2023-02-23-performance-and-tracing</guid>
+            <pubDate>Thu, 23 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[* SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.]]></description>
+            <content:encoded><![CDATA[<ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp">SECP<a class="hash-link" href="#secp" title="Direct link to heading">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We're currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system's introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We're currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nixops-backend">NixOps backend<a class="hash-link" href="#nixops-backend" title="Direct link to heading">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-22-consensus</link>
+            <guid>2023-02-22-consensus</guid>
+            <pubDate>Wed, 22 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks
+for UTxO HD. They showed a substantial performance regression, so we spent some
+time analyzing the results. We found out the frequency at which ledger snapshots
+were taken was too high, so we requested the benchmarking team a new run with a
+more realistic snapshotting policy. We continued refactoring and improving the
+prototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis
+design, which was well received. We continued working on testing and
+benchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work
+derived in several improvements such as better documentation, a framework for
+writing unit (and regression) tests, and the possibility of debugging
+<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and
+<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed
+to indicate a significant regression in performance. After looking into the
+benchmark logs we found that the benchmark runs took ledger state snapshots too
+often, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so
+small in the benchmark runs. Therefore, the next step is to re-run the
+benchmarks with a snapshotting policy that more closely resembles the one from
+mainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,
+<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and
+<code>cardano-lmdb-simple</code>) to <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from
+NSol. It was well received. They pointed out one blindspot, but we think it'll
+be relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis
+prototypes. I particular we tested and implemented a potential fix for
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022" target="_blank" rel="noopener noreferrer">increased ChainDB dequeue timings</a>, which partly
+behaved as we expected, but still needs further investigation. Also we obtained
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031" target="_blank" rel="noopener noreferrer">new benchmarking data</a> for the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Related to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>, we developed a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4379" target="_blank" rel="noopener noreferrer">DSL</a> for specifying
+<code>ChainDB</code> unit tests. This will allow us to better understand the
+counter-examples returned by QuickCheck tests, and to write <a href="https://github.com/input-output-hk/ouroboros-network/pull/4383" target="_blank" rel="noopener noreferrer">regression
+tests</a> for them. Also, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4358" target="_blank" rel="noopener noreferrer">added a module</a> to enable
+QuickCheck counter-examples to be run on the REPL, allowing for faster debugging
+feedback. Also, we improved the documentation related to followers
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4372" target="_blank" rel="noopener noreferrer">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the
+future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>
+0.3.0.0 to CHaP. Remember that we decided to split the packages related to
+Consensus into two bundles, one with the core functionality, Cardano-agnostic
+code, and another bundle with instantiations specific to Cardano.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-22-node-cli-api</link>
+            <guid>2023-02-22-node-cli-api</guid>
+            <pubDate>Wed, 22 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-02-22 - 2023-03-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4882" target="_blank" rel="noopener noreferrer">Fix some markdown links</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4881" target="_blank" rel="noopener noreferrer">Update changelog with PR4788 changes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4901" target="_blank" rel="noopener noreferrer">Remove pattern Tx</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4949" target="_blank" rel="noopener noreferrer">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4932" target="_blank" rel="noopener noreferrer">New build complete job</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4764" target="_blank" rel="noopener noreferrer">Update ouroboros-network</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --node-socket-path cli option</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4823" target="_blank" rel="noopener noreferrer">Straight line code for tx commands</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4655" target="_blank" rel="noopener noreferrer">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyConŻtent and related types</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4825" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops 2</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3783" target="_blank" rel="noopener noreferrer">Transaction debug script command</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-21-db-sync</link>
+            <guid>2023-02-21-db-sync</guid>
+            <pubDate>Tue, 21 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.
+We also investigated and had the first working UTxO-HD integration which is one
+of the potential future risks for db-sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn't
+use the full on disk storage but keeps things in memory and the plan is to keep
+it this way for the first iteration. The integration still has some performance
+issues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1353" target="_blank" rel="noopener noreferrer">#1353</a></li><li>Continued with ghc-9.2 integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1339" target="_blank" rel="noopener noreferrer">#1339</a></li><li>Worked on an new fixing procedure for
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1348" target="_blank" rel="noopener noreferrer">#1348</a>.
+We try to make these procedures work also on older schema version, without the
+need to migrate to newer schema, which can be very useful for fixing existing
+snapshots.</li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-17-crypto</link>
+            <guid>2023-02-17-crypto</guid>
+            <pubDate>Fri, 17 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril's core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-17-goedel</link>
+            <guid>2023-02-17-goedel</guid>
+            <pubDate>Fri, 17 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, distributivity properties of deltaQ, and consulting
+on performance design with the Marlowe team.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning
+paper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for
+draft paper about verifying design refinements for distributed
+system design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-17-hydra</link>
+            <guid>2023-02-17-hydra</guid>
+            <pubDate>Fri, 17 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests
+during the contestation period. These will now always push out the deadline and
+hence contestation periods are easier to pick (depending on the network a Head
+runs on). Furthermore, they added an important acceptance test and completed
+internal refactoring of the protocol logic making future changes easier.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Push contestation deadline on each contest <a href="https://github.com/input-output-hk/hydra/pull/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> into dedicated features</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete full minting policy <a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-17-ledger</link>
+            <guid>2023-02-17-ledger</guid>
+            <pubDate>Fri, 17 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>
+and <code>ouroboros-network</code> repositories.
+The vast majority of the effort involved all the changes to the ledger serialization libraries
+(and the interplay with <code>cardano-base</code>) which now support proper versioning.
+Supporting the conway ledger era, and in particular allowing the ledger state to transition
+to a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the
+documentation, make our testing infrastructure better (such as experimenting with better
+nightly tests), and formally specifying more parts of CIP-1694.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from
+the current ledger master. Many thanks to
+<a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer">Alexey</a> for this colossal undertaking!</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted
+in the CBOR specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by
+<code>cabal format</code> in our CI. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running
+property based tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-documentation-improvements">Small documentation improvements<a class="hash-link" href="#small-documentation-improvements" title="Direct link to heading">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the
+Shelley ledger specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="specifying-cip-1694">Specifying CIP-1694<a class="hash-link" href="#specifying-cip-1694" title="Direct link to heading">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!
+Upgrading to Agda 2.6.3 fixed our main build infrastructure problems,
+and we no longer have to rely on our custom fork. See <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/50" target="_blank" rel="noopener noreferrer">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/40" target="_blank" rel="noopener noreferrer">pull-40</a></li><li>the corresponding Haskell: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h3><p>We are still actively working on our new constraint based property testing framework.
+We have nearly all of the constraints for an entire ledger state
+hooked into generators, and tests that the generators do indeed obey the constraints.
+The variable count in the constraints is over 100!
+There is still much work to do on shrinking, making the generators faster,
+and writing actual property tests for the ledger, but the approach still seems viable and
+we are hopeful that it could replace our trace generators.
+The WIP can be followed here: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-17-network</link>
+            <guid>2023-02-17-network</guid>
+            <pubDate>Fri, 17 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one
+fix to <code>1.35.6</code> release, another one will likely be part of next release.  The
+first one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These
+bugs could only affect nodes which are out of sync and thus should not impose
+risk on well maintained nodes on mainnet.  We also advertise to deploy at most
+one of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started
+implementing it (see <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205" target="_blank" rel="noopener noreferrer">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query
+network protocol versions (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with
+<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">* monoidal-synchronisation-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* cardano-client-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* network-mux-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-api-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-testing-0.2.0.1</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-mock-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-framework-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-0.4.0.0 (it doesn't not yet include the fix we included</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  in `0.3.0.1`)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-10-hydra</link>
+            <guid>2023-02-10-hydra</guid>
+            <pubDate>Fri, 10 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts
+implementation further with the specification. This also resulted in a slight
+improvement on Hydra script size and costs. They consequently analysed the
+asymptotic complexity of collect and fanout and how they relate. Also plutus-tx
+profiling toolchain was evaluated and set up for future improvements on Hydra
+on-chain performance. In discussions with researchers and internal auditors,
+they also uncovered next steps on further securing the Head protocl using a
+"full" minting policy.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a><ul><li>Allow contest only once <a href="https://github.com/input-output-hk/hydra/pull/680" target="_blank" rel="noopener noreferrer">#680</a></li><li>Optimization through head output at index 0 <a href="https://github.com/input-output-hk/hydra/pull/700" target="_blank" rel="noopener noreferrer">#700</a></li><li>Value is preserved <a href="https://github.com/input-output-hk/hydra/pull/702" target="_blank" rel="noopener noreferrer">#702</a> + optimized exact value equality <a href="https://github.com/input-output-hk/hydra/pull/709" target="_blank" rel="noopener noreferrer">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href="https://github.com/input-output-hk/hydra/pull/721" target="_blank" rel="noopener noreferrer">#721</a><img loading="lazy" src="https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png" class="img_ev3q"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">this</a> idea ticket and <a href="https://github.com/input-output-hk/hydra/milestone/8" target="_blank" rel="noopener noreferrer">milestone</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-09-mithril</link>
+            <guid>2023-02-09-mithril</guid>
+            <pubDate>Thu, 09 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-08-consensus</link>
+            <guid>2023-02-08-consensus</guid>
+            <pubDate>Wed, 08 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level
+benchmarks. We have created a new repository that contains the <code>anti-diff</code>
+packages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to
+audit the implementation design, and we continued working on basic tests and
+simplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR
+encoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for
+the system level benchmarks to confirm if the performance of the prototype is
+satisfactory.</p><p>We also set up a repository for the <a href="https://github.com/input-output-hk/anti-diffs" target="_blank" rel="noopener noreferrer"><code>anti-diff</code></a> package, which
+required us to refactor the code, write documentation, and prepare a release to
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4347" target="_blank" rel="noopener noreferrer">basic tests</a> for the <em>Limit on Eagerness</em> property of
+Genesis. We also introduced further robustness and simplifications in the
+Genesis Density governor. Finally, we developed a presentation to engage again
+with the researchers on our Genesis implementation design.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We are in the process of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/6" target="_blank" rel="noopener noreferrer">polishing</a> the <code>ouroboros-consensus</code>
+documentation site, which we will use a the entry point for Consensus related
+documentation. The first version will not be complete, but we plan on
+systematically improving it.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4335" target="_blank" rel="noopener noreferrer">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows
+to dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href="https://github.com/input-output-hk/ouroboros-network/pull/4339" target="_blank" rel="noopener noreferrer">another tool</a> that serves an existing immutable DB via
+BlockFetch and ChainSync. This tool can help in assisting our local benchmarking
+efforts (for instance Genesis' ChainSync jumping prototype).</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-08-node-cli-api</link>
+            <guid>2023-02-08-node-cli-api</guid>
+            <pubDate>Wed, 08 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-02-08 - 2023-02-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4889" target="_blank" rel="noopener noreferrer">Remove use of multiline literals</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4775" target="_blank" rel="noopener noreferrer">Markdown links CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Date ranges for copyright</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4894" target="_blank" rel="noopener noreferrer">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4885" target="_blank" rel="noopener noreferrer">Disallow empty cost model for create update proposal</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4815" target="_blank" rel="noopener noreferrer">Refactor code using onLeft and onNothing</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4876" target="_blank" rel="noopener noreferrer">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-08-performance-and-tracing</link>
+            <guid>2023-02-08-performance-and-tracing</guid>
+            <pubDate>Wed, 08 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we're currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we've performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we're performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we're redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>A rework of the new tracing system's internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we'll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-03-crypto</link>
+            <guid>2023-02-03-crypto</guid>
+            <pubDate>Fri, 03 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril's core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used 'as-a-service'. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it's trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a> is finally merged, and we are ready to merge <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><p>The GitHub Action <a href="https://github.com/fernandrone/linelint" target="_blank" rel="noopener noreferrer">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Goedel Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-03-goedel</link>
+            <guid>2023-02-03-goedel</guid>
+            <pubDate>Fri, 03 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[The team works on applied research and consulting in formal methods]]></description>
+            <content:encoded><![CDATA[<p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been preparing several papers for peer review
+and knowledge sharing and consulting within IO and the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC
+2023 conference</li><li>Finished preparing and submitted a paper on performance engineering
+to an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design
+refinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul>]]></content:encoded>
+            <category>goedel</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-03-hydra</link>
+            <guid>2023-02-03-hydra</guid>
+            <pubDate>Fri, 03 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about
+rollbacks and updated graphs
+(<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>). In a next step,
+the specification will be made more approachable and an open standard. They
+improved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox
+environment and continued aligning the <code>hydra-plutus</code> scripts with the
+specification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs
+<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href="https://github.com/input-output-hk/hydra/pull/677" target="_blank" rel="noopener noreferrer">#677</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-02-02-ledger</link>
+            <guid>2023-02-02-ledger</guid>
+            <pubDate>Thu, 02 Feb 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Much of the work the past two weeks involved integration efforts,
+cleaning up and debugging some serialization issues,
+adding tests, and work on large projects that are still ongoing.
+We also released a CIP this week that aims to make the ledger
+a registered CIP category.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-evolution-cip">Ledger evolution CIP<a class="hash-link" href="#ledger-evolution-cip" title="Direct link to heading">​</a></h3><p>We published a
+<a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP</a>
+that will make the Cardano ledger a registered category of the CIP process.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="serialization-issues">Serialization issues<a class="hash-link" href="#serialization-issues" title="Direct link to heading">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,
+but it turned out to just be particularly confusing code.
+We have now clarified the issue for the future.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tests">New tests<a class="hash-link" href="#new-tests" title="Direct link to heading">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-a-better-cost-model-serialization-situation">Progress on a better cost model serialization situation.<a class="hash-link" href="#progress-on-a-better-cost-model-serialization-situation" title="Direct link to heading">​</a></h3><p>We are still working our way through <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+Towards this end, we are now properly gating the new flexible encoders
+until version 9.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nightly-tests">Nightly tests<a class="hash-link" href="#nightly-tests" title="Direct link to heading">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.
+See the previous ledger update for more information about this project.</p>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-27-hydra</link>
+            <guid>2023-01-27-hydra</guid>
+            <pubDate>Fri, 27 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,
+contributors and interested people from the community. The monthly repot for
+<a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a> is a digest
+of the things presented and also includes a summary of the meeting. The Hydra
+specification was getting discussed and the team is incorporating suggested
+changes of reviewers. Last but not least, they compute and publish script
+information on every PR and also on the
+<a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a>
+now.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-26-mithril</link>
+            <guid>2023-01-26-mithril</guid>
+            <pubDate>Thu, 26 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href="https://github.com/input-output-hk/mithril/issues/688" target="_blank" rel="noopener noreferrer">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href="https://github.com/input-output-hk/mithril/issues/689" target="_blank" rel="noopener noreferrer">#689</a></li><li>Implement the mechanism for the signature registration <a href="https://github.com/input-output-hk/mithril/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Implement the mechanism for epoch settings <a href="https://github.com/input-output-hk/mithril/issues/695" target="_blank" rel="noopener noreferrer">#695</a></li><li>Implement the mechanism for certificate pending <a href="https://github.com/input-output-hk/mithril/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Implement the mechanism for certificate <a href="https://github.com/input-output-hk/mithril/issues/697" target="_blank" rel="noopener noreferrer">#697</a></li><li>Implement the mechanism for snapshots list <a href="https://github.com/input-output-hk/mithril/issues/698" target="_blank" rel="noopener noreferrer">#698</a></li><li>Implement the mechanism for snapshot <a href="https://github.com/input-output-hk/mithril/issues/699" target="_blank" rel="noopener noreferrer">#699</a></li><li>Update enforcement of API version with Semver <a href="https://github.com/input-output-hk/mithril/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-25-consensus</link>
+            <guid>2023-01-25-consensus</guid>
+            <pubDate>Wed, 25 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities
+around the UTxO-HD prototype. This is a very important milestone which will
+enable us to run system-level tests and benchmarks, as well as start refactoring
+and cleaning the prototype. Regarding our Genesis workstream, we elaborated a
+roadmap that gives an indication of the remaining work. We also continued our
+work on benchmarking chain-sync-jumping. We also continued working on improving
+the way we handle blocks from the future, and advancing the integration of the
+new VRF and KES crypto.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough
+confidence that we will be able to move additional parts of the ledger state
+onto disk. We worked together with the Ledger team to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4296" target="_blank" rel="noopener noreferrer">elaborate a
+sketch</a> on how the UTxO-HD design would accommodate the migration of
+additional data from memory to disk. This gave us enough confidence that the
+current architecture will be extensible in the future.</p><p>On the testing front, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4274" target="_blank" rel="noopener noreferrer">added</a> property-based tests for the UTxO-HD
+type classes. </p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/issues/4289" target="_blank" rel="noopener noreferrer">enabled disabled components</a>, and addressed several
+technical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4269" target="_blank" rel="noopener noreferrer">#4269</a>), and integrate it
+into consensus (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4273" target="_blank" rel="noopener noreferrer">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/7" target="_blank" rel="noopener noreferrer">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We
+found a race condition in the LMDB backing store, which <a href="https://github.com/input-output-hk/ouroboros-network/pull/4283" target="_blank" rel="noopener noreferrer">we fixed</a>.
+After the fix we were able to successfully run these benchmarks. The results
+were published by <a href="https://github.com/input-output-hk/ouroboros-network/pull/4295" target="_blank" rel="noopener noreferrer">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and
+flushing values to disk. The following plot shows the duration of these disk
+operation in relation to the main ledger operations, where we can see that the
+cost of the former are comparatively low. The spike at the beginning of the
+graph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed
+to disk.</p><p><img loading="lazy" alt="UTxO-HD read and flush benchmarks" src="/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png" width="1600" height="800" class="img_ev3q"></p><p>After months of hard work adding tests for the prototype, we are ready to run
+end-to-end tests on the node, and system level benchmarks. This signals a very
+important milestone for the UTxO-HD workstream 🎉.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We elaborated a <a href="https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md" target="_blank" rel="noopener noreferrer">high-level decomposition</a> of the remaining
+work for Genesis. We also continued benchmarking the chain-sync-jumping
+happy-path.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.
+<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href="https://github.com/input-output-hk/cardano-ledger/pull/3262" target="_blank" rel="noopener noreferrer">pull
+request</a> to facilitate compiling consensus.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-25-node-cli-api</link>
+            <guid>2023-01-25-node-cli-api</guid>
+            <pubDate>Wed, 25 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2023-01-25 - 2023-02-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4853" target="_blank" rel="noopener noreferrer">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4848" target="_blank" rel="noopener noreferrer">Remove hlint from nix required CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4838" target="_blank" rel="noopener noreferrer">Remove reconfigure-hlint.sh script</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4837" target="_blank" rel="noopener noreferrer">Fix hlint warnings</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4833" target="_blank" rel="noopener noreferrer">Implement ADR-2: Restructure modules for generators</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4803" target="_blank" rel="noopener noreferrer">Stylish Haskell in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4802" target="_blank" rel="noopener noreferrer">Revert skip doc in ci</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4800" target="_blank" rel="noopener noreferrer">Skip CI on doc only changes</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4792" target="_blank" rel="noopener noreferrer">Skip CI if only changes are documentation</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4776" target="_blank" rel="noopener noreferrer">Build all of cardano-node in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4766" target="_blank" rel="noopener noreferrer">Check cabal files in CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4785" target="_blank" rel="noopener noreferrer">Straight line error handling</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4787" target="_blank" rel="noopener noreferrer">New NodeToClientVersionOf typeclass</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4832" target="_blank" rel="noopener noreferrer">Remove NoImplicitPrelude from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4809" target="_blank" rel="noopener noreferrer">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4808" target="_blank" rel="noopener noreferrer">Use hoistMaybe</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4788" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4805" target="_blank" rel="noopener noreferrer">New query stake-snapshot integration test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4671" target="_blank" rel="noopener noreferrer">Make leadership-schedule test less flaky</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-20-crypto</link>
+            <guid>2023-01-20-crypto</guid>
+            <pubDate>Fri, 20 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href="https://github.com/input-output-hk/mithril/pull/675" target="_blank" rel="noopener noreferrer">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>Plutus team ran <a href="https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs" target="_blank" rel="noopener noreferrer">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we'll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There's been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href="https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">doing the change</a>, but still the CI is not happy.</li><li>The <a href="https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">same</a> was needed for the KES agents prerequisites <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">PR#317</a>.</li><li>We've started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-20-hydra</link>
+            <guid>2023-01-20-hydra</guid>
+            <pubDate>Fri, 20 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1
+specification. Of which a first version has been aggregated and is currently
+under review. They aligned the on-chain scripts of reimbursing funds on abort
+like defined in the specification, improved the mutation test framework to have
+more control when testing plutus scripts. The added HeadId in the API and the
+TUI example client make <code>hydra-node</code> easier to use and a first experiment of a
+Hydra Head explorer was showing the utility of this - see what Heads exist on
+the <code>preview</code> network <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>HeadId to API and display in the TUI <a href="https://github.com/input-output-hk/hydra/pull/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href="https://github.com/input-output-hk/hydra/pull/679" target="_blank" rel="noopener noreferrer">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href="https://github.com/input-output-hk/hydra/pull/670" target="_blank" rel="noopener noreferrer">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href="https://www.overleaf.com/read/bbqzmptcxryj" target="_blank" rel="noopener noreferrer">Read it on overleaf</a> (<a href="https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md" target="_blank" rel="noopener noreferrer">Communication channels</a> for feedback)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-20-network</link>
+            <guid>2023-01-20-network</guid>
+            <pubDate>Fri, 20 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p>]]></content:encoded>
+            <category>network</category>
+            <category>release</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-20-sre</link>
+            <guid>2023-01-20-sre</guid>
+            <pubDate>Fri, 20 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing
+support for cardano-world.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tullia">Tullia<a class="hash-link" href="#tullia" title="Direct link to heading">​</a></h3><ul><li>Made it easier to support cloning from a PR's fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href="https://github.com/hashicorp/nomad/issues/12877" target="_blank" rel="noopener noreferrer">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href="https://colmena.cli.rs" target="_blank" rel="noopener noreferrer">Colmena</a> for deploys instead of <a href="https://github.com/serokell/deploy-rs" target="_blank" rel="noopener noreferrer">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href="https://github.com/yaxitech/ragenix" target="_blank" rel="noopener noreferrer">ragenix</a> instead of <a href="https://github.com/Mic92/sops-nix" target="_blank" rel="noopener noreferrer">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-world">bitte-world<a class="hash-link" href="#bitte-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-19-ledger</link>
+            <guid>2023-01-19-ledger</guid>
+            <pubDate>Thu, 19 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694
+(restructuring the ledger state),
+fixed the PDF hosting problem (mostly the formal specs),
+built out more of the new user-friendly ledger API,
+finished a proof of concept for constraint-based generators for property tests
+(with the hopes of being able to replace our trace generators one day),
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="restructuring-the-ledger-state">Restructuring the ledger state<a class="hash-link" href="#restructuring-the-ledger-state" title="Direct link to heading">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,
+as described in CIP-1694.
+In particular, the ledger rules will be restructured as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">   BBODY</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |-------------------------------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v                               v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   TICK                            LEDGERS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |                               |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |---------|                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v         v                     v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |----------|          |--------|-------------------|-----------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v          v                   v                   v           v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                              |                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |---------|------------|       v                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v         v            v      DELPL                v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             |--------|          |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             v        v          v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">-..- Removed</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">+..+ Added</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">~..~ Modified</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.
+In the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.
+We have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pdf-hosting">PDF hosting<a class="hash-link" href="#pdf-hosting" title="Direct link to heading">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag
+with a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.
+The action creates a GitHub release containing the PDFs.
+The links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="powering-the-new-ledger-api">Powering the new ledger API<a class="hash-link" href="#powering-the-new-ledger-api" title="Direct link to heading">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,
+and replaced them with lenses.
+This is probably the last major restructuring that the ledger team will do on the code base
+for the API for a while
+(the Plutus tools team will be working on it next, see <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">here</a>).
+We also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative
+of not just an initial state, generate a single random valid block, and then test our properties.
+The hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a> massive CI speedup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a> better types for fees in the protocol parameters</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-14-db-sync</link>
+            <guid>2023-01-14-db-sync</guid>
+            <pubDate>Sat, 14 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused
+the last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the
+new leger core and ghc-9.2.4</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate CHaP
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1331" target="_blank" rel="noopener noreferrer">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1332" target="_blank" rel="noopener noreferrer">#1332</a></li><li>Technical debt: Add code formatter fourmolu
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1334" target="_blank" rel="noopener noreferrer">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-13-hydra</link>
+            <guid>2023-01-13-hydra</guid>
+            <pubDate>Fri, 13 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the
+technical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique
+<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to
+explicitly synchronize from genesis (if configured), and fixed smaller log and
+build issues reported by new users.</p><p>Besides this, a retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+was published by Matthias Benkort (CF) on Hydra, summarizing our progress made
+in 2022 also an outlook where Hydra is headed for in 2023. Also, the team had
+some first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href="https://hydra.family/head-protocol/monthly/2022-12" target="_blank" rel="noopener noreferrer">hydra
+website</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also
+an outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href="https://github.com/ch1bo/hydra-spec" target="_blank" rel="noopener noreferrer">latest
+version in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href="https://hydra.family/head-protocol/adr/21/" target="_blank" rel="noopener noreferrer">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Node Release Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-13-release</link>
+            <guid>2023-01-13-release</guid>
+            <pubDate>Fri, 13 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[Node Reelease Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11-02---2023-01-13">2022-11-02 - 2023-01-13<a class="hash-link" href="#2022-11-02---2023-01-13" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on
+<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.
+This work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.5</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li></ul>]]></content:encoded>
+            <category>release</category>
+        </item>
+        <item>
+            <title><![CDATA[System Test Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-13-system-test</link>
+            <guid>2023-01-13-system-test</guid>
+            <pubDate>Fri, 13 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single
+Relay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href="https://input-output-hk.github.io/cardano-node-tests/readme.html" target="_blank" rel="noopener noreferrer">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html" target="_blank" rel="noopener noreferrer">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===
+  to
+  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">details here</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul>]]></content:encoded>
+            <category>system-test</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-12-mithril</link>
+            <guid>2023-01-12-mithril</guid>
+            <pubDate>Thu, 12 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href="https://mithril.network/doc/adr/4" target="_blank" rel="noopener noreferrer">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href="https://github.com/input-output-hk/mithril/issues/671" target="_blank" rel="noopener noreferrer">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease" target="_blank" rel="noopener noreferrer">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href="https://github.com/input-output-hk/mithril/issues/681" target="_blank" rel="noopener noreferrer">#681</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-11-consensus</link>
+            <guid>2023-01-11-consensus</guid>
+            <pubDate>Wed, 11 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During
+these weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and
+discussing with the Ledger team the changes that might be required for the next
+iterations. The pull request that adds the Conway era is waiting for a second
+review round and we hope to merge it soon. On the technical debt side we are
+looking into a property-test failure found in the iterators. We are
+investigating if this is an error in the model or in the implementation. We also
+improved the documentation of our testing code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.
+The Ledger team is concerned that for the remaining maps we might need the full
+ledger state on epoch boundaries. Since the main consumer of the ledger rules is
+Consensus, the code that requires access to a full state could be moved from the
+ledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take
+place in such bridge, instead of querying the ledger for the values that are
+required in the epoch-transition computations.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4234" target="_blank" rel="noopener noreferrer">relocated</a> some UTxO-HD definitions, in preparation for merging
+the prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory
+consumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely
+reaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The
+in-memory backend is about 30 minutes faster, but still slower than the baseline
+version. We are aware of this phenomenon and it is inherent to the problem of
+maintaining sequences of differences of the last <code>k</code> ledger states that allows
+us to perform rollback and roll-forward. We are in the process of measuring
+syncing from scratch times.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png" width="2500" height="1700" class="img_ev3q"></p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/pull/4263" target="_blank" rel="noopener noreferrer">added <code>StaticEither</code> accessors</a> that helped us to simplify
+the UTxO-HD prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era">New Conway era<a class="hash-link" href="#new-conway-era" title="Direct link to heading">​</a></h3><p>We incorporated the feedback of the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">pull request</a>, and rebased this
+branch on top of <code>master</code>. The PR is pending a second review round and we hope
+to merge this soon.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We are investigating a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">property-testing failure</a> involving
+iterators. Solving this requires understanding the expected behavior of
+iterators in the counterexample found by <code>QuickCheck</code> to determine if the error
+is in the model or in the implementation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4248" target="_blank" rel="noopener noreferrer">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the
+explanations about the tests are easier to find in the relevant modules, and the
+documentation is easier to keep up to date.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-11-performance-and-tracing</link>
+            <guid>2023-01-11-performance-and-tracing</guid>
+            <pubDate>Wed, 11 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we're now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we've made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we've started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>The improved tracing internals were implemented, and we're now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.
+We now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.
+Once this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-06-crypto</link>
+            <guid>2023-01-06-crypto</guid>
+            <pubDate>Fri, 06 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: The API features (error handling) has been merged. </li><li>Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href="https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d" target="_blank" rel="noopener noreferrer">Version 0.1.1</a>, which was published in <a href="https://crates.io/crates/kes-summed-ed25519" target="_blank" rel="noopener noreferrer">crates.io</a>. </li><li>Updated new KES format to mithril library <a href="https://github.com/input-output-hk/mithril/pull/674" target="_blank" rel="noopener noreferrer">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href="https://github.com/input-output-hk/mithril/pull/531" target="_blank" rel="noopener noreferrer">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href="https://github.com/input-output-hk/iohk-nix/pull/520" target="_blank" rel="noopener noreferrer">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href="https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518" target="_blank" rel="noopener noreferrer">PR#255</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cryptography-handbook">Cryptography handbook<a class="hash-link" href="#cryptography-handbook" title="Direct link to heading">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href="https://input-output-hk.github.io/cryptography_spec/" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2023-01-05-ledger</link>
+            <guid>2023-01-05-ledger</guid>
+            <pubDate>Thu, 05 Jan 2023 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,
+built out the new Conway era transaction body (in line with CIP-1694),
+greatly reduce some problematically large calculations on the epoch boundary,
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finishing-the-deposit-tracking">Finishing the deposit tracking<a class="hash-link" href="#finishing-the-deposit-tracking" title="Direct link to heading">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.
+As this is a large data structure
+(since its size is linear with respect to the number of registered stake credentials),
+it is very important that we also reduce the memory overhead as much as possible.
+Fortunately, we were able to add very little overhead for the deposits by using existing
+efficient data structures. The extra tracking now only incurs one word (8 bytes)
+per registered stake credential.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era-transaction">New Conway era transaction<a class="hash-link" href="#new-conway-era-transaction" title="Direct link to heading">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.
+Note that the Conway era implements, losing speaking, the parts of CIP-1694 that are not
+related to the liquid democracy (the "DReps").
+The new transaction body adds the new governance actions and votes,
+while also deprecating the old governance structures
+(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.
+The wire specification is still subject to change while we work on the Conway era,
+but it is now usable and has proper testing support
+(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="optimizing-the-tickf-transition">Optimizing the <code>TICKF</code> transition<a class="hash-link" href="#optimizing-the-tickf-transition" title="Direct link to heading">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load
+placed on the node by the ledger at the epoch boundary.
+While still not perfect, we believe that we have removed one of the final problematically long
+epoch boundary computations that exacerbate situations like
+<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">this</a>.
+In particular, the problem involved the way in which the consensus layer obtains a view of the
+ledger for the purposes of checking the leadership schedule in a new epoch.
+We implemented a stopgap measure which now only incurs a single multi-second cost once per epoch
+instead of potentially several multi-second costs while the networks waits for the first block
+of a new epoch to be minted.</p><p>See:</p><ul><li>An <a href="https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md" target="_blank" rel="noopener noreferrer">ADR</a> about the decision.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-ledger-event">Improved ledger event<a class="hash-link" href="#improved-ledger-event" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.
+For this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now
+includes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-type-saftey">Improved type saftey<a class="hash-link" href="#improved-type-saftey" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR
+encoders and decoders were using the wrong level of precision, having to due with with
+the Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types
+for <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="codemodule-organization">Code/Module organization<a class="hash-link" href="#codemodule-organization" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,
+due to the uncertainly of release dates while we were implementing them.
+In particular, they were coupled in way that is different from the rest of the code base.
+With hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two
+separate ledger era packages, which is now consistent with the rest of the repository
+and module structure.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test
+generator code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,
+the ledger does not need to deal with signing keys, and since this is a topic that
+deserves the utmost care, it is best to make it clear that our use of signing keys
+is only for testing.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest
+of the codebase.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="revert-pointer-address-deprecation">Revert pointer address deprecation<a class="hash-link" href="#revert-pointer-address-deprecation" title="Direct link to heading">​</a></h4><p>Thanks to one of our excellent internal auditors,
+<a href="https://github.com/jmhrpr" target="_blank" rel="noopener noreferrer">@jmhrpr</a>,
+we now have a better plan for deprecating pointer addresses.
+This meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3161" target="_blank" rel="noopener noreferrer">issue-3161</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3215" target="_blank" rel="noopener noreferrer">pull-3215</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="miscellaneous">Miscellaneous<a class="hash-link" href="#miscellaneous" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,
+reducing many constraints.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a> - We switch from <a href="https://hackage.haskell.org/package/ormolu" target="_blank" rel="noopener noreferrer">ormolu</a> to
+<a href="https://hackage.haskell.org/package/fourmolu" target="_blank" rel="noopener noreferrer">fourmolu</a>.
+The reason was to be able to finally have more diff friendly code!</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-28-node-cli-api</link>
+            <guid>2022-12-28-node-cli-api</guid>
+            <pubDate>Wed, 28 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-12-28 - 2023-01-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4762" target="_blank" rel="noopener noreferrer">Fix hedgehog-extras sha hash</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4759" target="_blank" rel="noopener noreferrer">Update hegehog-extras bounds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4751" target="_blank" rel="noopener noreferrer">GitHub token fix</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4743" target="_blank" rel="noopener noreferrer">Use setup-haskell action</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4738" target="_blank" rel="noopener noreferrer">Use Github Action to install libsecp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4714" target="_blank" rel="noopener noreferrer">Update index state and hedgehog-extras.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4710" target="_blank" rel="noopener noreferrer">Cleaned cabal files</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4737" target="_blank" rel="noopener noreferrer">Add cache versioning</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4742" target="_blank" rel="noopener noreferrer">Delete obsolete scripts</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4746" target="_blank" rel="noopener noreferrer">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4749" target="_blank" rel="noopener noreferrer">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4754" target="_blank" rel="noopener noreferrer">Optimise query stake-snapshot command</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-16-hydra</link>
+            <guid>2022-12-16-hydra</guid>
+            <pubDate>Fri, 16 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/" target="_blank" rel="noopener noreferrer">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a>.</li><li>Recorded decision to use model-based testing (<a href="https://hydra.family/head-protocol/adr/22/" target="_blank" rel="noopener noreferrer">ADR22</a>) and improved Model <a href="https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html" target="_blank" rel="noopener noreferrer">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href="https://github.com/input-output-hk/hydra/issues/656" target="_blank" rel="noopener noreferrer">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href="https://github.com/input-output-hk/hydra/pull/646" target="_blank" rel="noopener noreferrer">#646</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Push <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-15-mithril</link>
+            <guid>2022-12-15-mithril</guid>
+            <pubDate>Thu, 15 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2248.1" target="_blank" rel="noopener noreferrer"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href="https://crates.io/crates/mithril-stm" target="_blank" rel="noopener noreferrer"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node's multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href="https://github.com/input-output-hk/mithril/issues/619" target="_blank" rel="noopener noreferrer">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/638" target="_blank" rel="noopener noreferrer">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Fixed the protocol parameters transition <a href="https://github.com/input-output-hk/mithril/issues/627" target="_blank" rel="noopener noreferrer">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href="https://github.com/input-output-hk/mithril/issues/510" target="_blank" rel="noopener noreferrer">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href="https://github.com/input-output-hk/mithril/issues/633" target="_blank" rel="noopener noreferrer">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href="https://github.com/input-output-hk/mithril/issues/621" target="_blank" rel="noopener noreferrer">#621</a></li><li>Worked on the re-genesis of the test networks <a href="https://github.com/input-output-hk/mithril/issues/651" target="_blank" rel="noopener noreferrer">#651</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-14-consensus</link>
+            <guid>2022-12-14-consensus</guid>
+            <pubDate>Wed, 14 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the
+backing store and Mempool on the UTxO-HD branch with important discoveries
+regarding parallel QSM testing. We also worked with the Ledger team to envisage
+the modifications that are required in Ledger and Consensus to accommodate the
+changes in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking
+the ledger operations, which will allow us to identify, debug, and profile
+potential performance problems. We drafted a document that defines how to manage
+the versions of Consensus-related packages. The top level documentation of
+<code>ouroboros-network</code> now features a description of the consensus components and
+provides a hyperlinked map to the modules documentation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the
+parallel case proved to be more challenging than we thought. The operation of
+adding a list of transactions to the mempool is not atomic and, as a result,
+when adding a list of transactions, transactions from other processes can be
+added in between. The mempool implementation handles this correctly, however
+this required us to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">redesign</a> the parallel model we had to take
+the lack of atomicity into account.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We finished refactoring the backing store property tests. The second review
+round is ongoing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)
+fetching/looking up data from disk.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis
+design related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely
+delineates a fundamental component. We almost have a full Haskell prototype of
+it. It will be very nicely self-contained, perhaps even usable in the ultimate
+implementation!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto
+types to avoid huge allocation on the epoch boundary when changing aspects of
+the crypto that will only manifest in headers, not in the ledger states.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pull-request</a> that adds a support to <code>db-analyser</code> for
+benchmarking ledger operations. This will allow us to identify, debug, and
+profile potential performance problems. The benchmark focus on the main 5 ledger
+operations that are involved in chain syncing, block forging, and block
+validation, namely:</p><ol start="0"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65
+million blocks (approximately) of the Cardano chain. The thin yellow lines under
+the x-axis show the epoch boundaries, whereas the thick yellow lines correspond
+to the era transitions.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png" width="1600" height="800" class="img_ev3q"></p><p>As we can see in this figure, era and epoch boundaries require more computation
+time. The ledger team are aware of this problem, and we are working to improve
+this situation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4207" target="_blank" rel="noopener noreferrer">drafted a document</a> motivating and defining how Consensus (and
+possibly other core teams) will/should manage our package versions. This
+pull-request garnered many great discussions from our team members and other
+teams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et
+al. We want to thank you all for your input, and we found this discussion very
+enlightening!</p><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">pull request</a> that adds an overview of consensus to
+the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[DB-sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-14-db-sync</link>
+            <guid>2022-12-14-db-sync</guid>
+            <pubDate>Wed, 14 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have
+been found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses
+reverse indexes, same as the release
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1320" target="_blank" rel="noopener noreferrer">#1320</a>
+This also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1324" target="_blank" rel="noopener noreferrer">#1324</a></li><li>AdaPots fix <a href="https://github.com/input-output-hk/cardano-db-sync/pull/1323" target="_blank" rel="noopener noreferrer">#1323</a>. This
+fixes an issue where the per epoch AdaPots didn't match the epoch boundary, but
+they also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">#3212</a>. This pr
+adjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the
+number of queries that db-sync does during syncing an make syncing faster.</li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-14-node-cli-api</link>
+            <guid>2022-12-14-node-cli-api</guid>
+            <pubDate>Wed, 14 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-12-14 - 2022-12-27</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4703" target="_blank" rel="noopener noreferrer">Move style guide to wiki</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4734" target="_blank" rel="noopener noreferrer">Cache secp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4717" target="_blank" rel="noopener noreferrer">Use cabal-cache</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4699" target="_blank" rel="noopener noreferrer">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4724" target="_blank" rel="noopener noreferrer">Update cabal.project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4125" target="_blank" rel="noopener noreferrer">Add aarch64-darwin to nix-shell</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4626" target="_blank" rel="noopener noreferrer">Improved error message for failed asset name decode</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4700" target="_blank" rel="noopener noreferrer">Remove cardano-cli address build-script</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4698" target="_blank" rel="noopener noreferrer">Move signing key reading to cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4712" target="_blank" rel="noopener noreferrer">Only run chairman test on latest era</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4679" target="_blank" rel="noopener noreferrer">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-14-performance-and-tracing</link>
+            <guid>2022-12-14-performance-and-tracing</guid>
+            <pubDate>Wed, 14 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we've planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we're continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we'll be running the model cluster workload.</p><p>We've also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we've done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that's also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it's the fair benchmark, because that's the way we expect SPO's to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we've established the performance of the new system to be adequate for the release, we won't be delaying it much further.</p><p>In addition, we're still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we've also improved provenance of the raw data, by collecting more identification information and statistics about it.
+This means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.
+This will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.
+Previously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)
+Naturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-12-network</link>
+            <guid>2022-12-12-network</guid>
+            <pubDate>Mon, 12 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p>]]></content:encoded>
+            <category>network</category>
+            <category>release</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-09-crypto</link>
+            <guid>2022-12-09-crypto</guid>
+            <pubDate>Fri, 09 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We merged the API redesig <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We'll probably circle back to this in the future <a href="https://github.com/input-output-hk/musig2/pull/36" target="_blank" rel="noopener noreferrer">PR#36</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We merged the individual signature <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href="https://github.com/input-output-hk/kes/commits/master" target="_blank" rel="noopener noreferrer">kes repo</a>) </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href="https://gitlab.haskell.org/ghc/ghc/-/issues/22564" target="_blank" rel="noopener noreferrer">bug in GHC</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Fixed a 'use-after-free' bug in the KES agent.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-09-hydra</link>
+            <guid>2022-12-09-hydra</guid>
+            <pubDate>Fri, 09 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on completing to "Validate coordinated head protocol against formal model", this is a huge step to verify the implementation is secure. They also worked on implementing <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> related to bounded tx validity which is now under review. <a href="https://github.com/obsidiansystems/hydra-pay" target="_blank" rel="noopener noreferrer">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href="https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue" target="_blank" rel="noopener noreferrer">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Document model based testing <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a> &amp; <a href="https://github.com/input-output-hk/hydra/issues/641" target="_blank" rel="noopener noreferrer">#641</a></li><li>Got <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href="https://github.com/input-output-hk/hydra/issues/634" target="_blank" rel="noopener noreferrer">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock "the RFP prepared for the external audit" <a href="https://github.com/input-output-hk/hydra/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href="https://github.com/input-output-hk/hydra/issues/630" target="_blank" rel="noopener noreferrer">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href="https://github.com/input-output-hk/hydra/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-09-ledger</link>
+            <guid>2022-12-09-ledger</guid>
+            <pubDate>Fri, 09 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly
+<code>cardano-ledger-api</code> package!
+A <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>
+will be filled out in the days ahead,
+people interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using
+<a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">architectural decision records</a>
+to leave a record of important decisions that the team makes.
+We will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.
+We are prioritizing correctness with our first pull request, and will follow up with
+performance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a>
+for more context.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ledger-api">Cardano ledger API<a class="hash-link" href="#cardano-ledger-api" title="Direct link to heading">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it
+out and adding much needed documentation.
+They have also added doctests!
+In the days to come, the Plutus tools team will map out a lot more work for the API and record
+it in this
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3182" target="_blank" rel="noopener noreferrer">pull-3182</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3188" target="_blank" rel="noopener noreferrer">pull-3188</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="architectural-decision-records-adrs">Architectural Decision Records (ADRs)<a class="hash-link" href="#architectural-decision-records-adrs" title="Direct link to heading">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made
+in the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3177" target="_blank" rel="noopener noreferrer">pull-3177</a> (rendered <a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">here</a>)</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tracking-individual-deposits">Tracking individual deposits<a class="hash-link" href="#tracking-individual-deposits" title="Direct link to heading">​</a></h4><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3190/files" target="_blank" rel="noopener noreferrer">ADR-3</a>
+for background.
+We now have the logic in place to track individual deposits, and a host of property tests
+to make sure that the logic is correct.
+The current implementation uses more memory than it needs to, and we will address that next,
+with our hope being to only use one word (8 bytes) per registered stake credential.
+There is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="removing-pointer-addresses">Removing pointer addresses<a class="hash-link" href="#removing-pointer-addresses" title="Direct link to heading">​</a></h4><p>Pointer addresses, which have never seen any real use
+(there are something like eleven on mainnet), are being deprecated starting at Cardano major
+version 9.
+<a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a> gives the context.
+We are disabling them by first preventing transaction outputs containing them
+from being serialized by the node at the moment we switch to version 9.
+At the hard fork after that, we will translate the existing few pointer addresses
+to enterprise addresses.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3174" target="_blank" rel="noopener noreferrer">pull-3174</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never
+be exercised. After we have passed the given hardfork, we are able to clean up the code
+and simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3165" target="_blank" rel="noopener noreferrer">pull-3165</a> - We improved the type safety of our code while also discovering and fixing
+a serialization bug.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed dead code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to
+dislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We organized our property testing code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3200" target="_blank" rel="noopener noreferrer">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the
+ledger state to the Plutus script context.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-02-hydra</link>
+            <guid>2022-12-02-hydra</guid>
+            <pubDate>Fri, 02 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress
+after last week's summit. They have extended their model-based testing (MBT)
+approach with transaction creation &amp; observation
+<a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a>, solved
+<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet
+initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a>.
+Also, the Hydra researchers updated the security proofs of the Coordinated Hydra
+Head, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href="https://github.com/input-output-hk/hydra/pull/644" target="_blank" rel="noopener noreferrer">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[DB sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-01-db-sync</link>
+            <guid>2022-12-01-db-sync</guid>
+            <pubDate>Thu, 01 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,
+it makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces
+migrations. This release finalises the objectives that were set for db-sync for the previous
+3 months period and part of the syncing speed objective set for the next period
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100" target="_blank" rel="noopener noreferrer">Changelog</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li><p>Branch <a href="https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b" target="_blank" rel="noopener noreferrer">release/13.1.0.x</a>
+includes all the improvements related to the release. The release is passing through the testing
+phase and a number of bugs and issues have been fixed, like
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a>
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a>.
+Also many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new
+release and development process, so that it takes into account migrations
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1305" target="_blank" rel="noopener noreferrer">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for
+docker.</p></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-01-mithril</link>
+            <guid>2022-12-01-mithril</guid>
+            <pubDate>Thu, 01 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href="https://github.com/input-output-hk/mithril/issues/585" target="_blank" rel="noopener noreferrer">#585</a></li><li>Completed the second stage of the store automatic migration process <a href="https://github.com/input-output-hk/mithril/issues/600" target="_blank" rel="noopener noreferrer">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href="https://github.com/input-output-hk/mithril/issues/599" target="_blank" rel="noopener noreferrer">#599</a></li><li>Completed CI/CD handling of PR from forks <a href="https://github.com/input-output-hk/mithril/issues/597" target="_blank" rel="noopener noreferrer">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/586" target="_blank" rel="noopener noreferrer">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Worked on multi-platforms end to end test <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[System Test Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-12-01-system-test</link>
+            <guid>2022-12-01-system-test</guid>
+            <pubDate>Thu, 01 Dec 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single
+Relay</em> functionality, and also tested some DB-Sync tags.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href="https://github.com/mkoura/report-aggregator" target="_blank" rel="noopener noreferrer">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul>]]></content:encoded>
+            <category>system-test</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-30-consensus</link>
+            <guid>2022-11-30-consensus</guid>
+            <pubDate>Wed, 30 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic
+cursor API that was needed to implement LMDB range reads, which is in turn
+required for the implementation of the UTxO HD feature. We added tables to
+several tests in for the UTxO HD feature, which increases our confidence in the
+correctness of the prototype. The mempool property tests are close to being
+completed. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with
+CSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a
+high-level overview of consensus to the top level documentation of
+<code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>)) which was
+needed to solve a bug with LMDB range-reads. After this PR was merged, we focused on
+bridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating
+using <code>lmdb-simple</code>'s cursor API without <code>Serialise</code> constraints (<a href="https://github.com/input-output-hk/lmdb-simple/pull/3" target="_blank" rel="noopener noreferrer">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4184" target="_blank" rel="noopener noreferrer">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses
+tables. This will enable us to exercise the UTxO HD mempool integration by
+leveraging the existing mempool property-tests. The new state-machine
+property-tests are still needed for testing the parallel behaviour of the
+mempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements
+in the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the
+state machine did not have access to mutable references. However, the mempool
+tests require the use of such mutable references for mocking the ledger
+interface. As a result, our parallel tests were failing with rather obscure
+messages. @Jasagredo submitted a pull request (<a href="https://github.com/stevana/quickcheck-state-machine/pull/12" target="_blank" rel="noopener noreferrer">#12</a>) that allows for
+new mutable references to be created at each run of the state machine.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code
+and gathering results (i.e., plots and their interpretation).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="csj-prototype">CSJ prototype<a class="hash-link" href="#csj-prototype" title="Direct link to heading">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact
+KES and batched VRF (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4151" target="_blank" rel="noopener noreferrer">#4151</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We
+are now working on the "Implementation" section (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4020" target="_blank" rel="noopener noreferrer">#4020</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4146" target="_blank" rel="noopener noreferrer">#4146</a> and <a href="https://github.com/input-output-hk/ouroboros-network/pull/4174" target="_blank" rel="noopener noreferrer">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">#4197</a>). This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-30-node-cli-api</link>
+            <guid>2022-11-30-node-cli-api</guid>
+            <pubDate>Wed, 30 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-11-30 - 2022-12-13</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Append tx output in cli transaction build command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4592" target="_blank" rel="noopener noreferrer">Update Error messages in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Replace Data.Map with Data.Map.Strict</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4708" target="_blank" rel="noopener noreferrer">Update Github actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-30-performance-and-tracing</link>
+            <guid>2022-11-30-performance-and-tracing</guid>
+            <pubDate>Wed, 30 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don't see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.
+The idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.
+We are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-28-network</link>
+            <guid>2022-11-28-network</guid>
+            <pubDate>Mon, 28 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Stake-Driven Data Diffusion Release for Relays]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG's benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We've seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don't expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"kind"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"PeerStatusChangeFailure"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"peerStatusChangeType"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">"reason"</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">"TimeoutError"</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don't try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There's a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p>]]></content:encoded>
+            <category>network</category>
+            <category>release</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-25-crypto</link>
+            <guid>2022-11-25-crypto</guid>
+            <pubDate>Fri, 25 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don't need to be aware of the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/31" target="_blank" rel="noopener noreferrer">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library's README <a href="https://github.com/input-output-hk/mithril/pull/616" target="_blank" rel="noopener noreferrer">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>We've been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-25-hydra</link>
+            <guid>2022-11-25-hydra</guid>
+            <pubDate>Fri, 25 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-23-ledger</link>
+            <guid>2022-11-23-ledger</guid>
+            <pubDate>Wed, 23 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We released <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>,
+our proposal for entering the <a href="https://roadmap.cardano.org/en/voltaire/" target="_blank" rel="noopener noreferrer">Voltaire phase</a>.
+<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for
+Cardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.
+The draft pull request was polished, reviewed, and merged this week.
+This solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,
+and the ledger team in particular dedicated one engineer to help with these efforts
+for the next release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-conway-ledger-era">The Conway ledger era<a class="hash-link" href="#the-conway-ledger-era" title="Direct link to heading">​</a></h3><p>The current proposal in <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a> encompasses two new ledger eras.
+The first era will be called Conway, after the English mathematician John Horton Conway.
+The community facing aspects of the Conway ledger era will be very minimal,
+but it will pave the way for introducing liquid democracy.
+The details can be viewed <a href="https://github.com/input-output-hk/cardano-ledger/projects/4" target="_blank" rel="noopener noreferrer">here</a>.
+We do not yet have a formal specification for the Conway era.
+Our plan is to debut the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>.
+Briefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href="https://github.com/cardano-foundation/CIPs/pull/318" target="_blank" rel="noopener noreferrer">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="versioned-cbor">Versioned CBOR<a class="hash-link" href="#versioned-cbor" title="Direct link to heading">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano
+major protocol version.
+We still aim to preserve backwards compatibility as much as possible, but we now have a principled
+plan for resolving problems (see <a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">CIP-ledger-cbor</a>).
+In particular, we can now address several long standing issues, such as
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>, <a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits
+is much closer now to being ready to take out of draft (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>).
+For background on the issue, see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>.
+This is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>As always, we keep working on technical debt.
+We have deduplicated a some things: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3129" target="_blank" rel="noopener noreferrer">pull-3129</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a>.
+We have memoized a problematic computation (though more due diligence is needed before we can
+merge): <a href="https://github.com/input-output-hk/cardano-ledger/pull/3141" target="_blank" rel="noopener noreferrer">pull-3141</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node-release">Node release<a class="hash-link" href="#node-release" title="Direct link to heading">​</a></h3><p>We have been helping with the node release efforts. See <a href="https://github.com/input-output-hk/cardano-node/pull/4608" target="_blank" rel="noopener noreferrer">pull-4608</a>.</p>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-18-hydra</link>
+            <guid>2022-11-18-hydra</guid>
+            <pubDate>Fri, 18 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href="https://github.com/input-output-hk/hydra" target="_blank" rel="noopener noreferrer"><code>hydra</code></a>!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href="https://github.com/input-output-hk/hydra/releases/tag/0.8.1" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href="https://github.com/input-output-hk/hydra/pull/615" target="_blank" rel="noopener noreferrer">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>"Developing Hydra" on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-18-mithril</link>
+            <guid>2022-11-18-mithril</guid>
+            <pubDate>Fri, 18 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released a new Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2246.1" target="_blank" rel="noopener noreferrer">2246.1</a></li><li>Completed the first stage of the store migrations process <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href="https://github.com/input-output-hk/mithril/issues/576" target="_blank" rel="noopener noreferrer">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href="https://github.com/input-output-hk/mithril/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href="https://github.com/input-output-hk/mithril/issues/594" target="_blank" rel="noopener noreferrer">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-16-consensus</link>
+            <guid>2022-11-16-consensus</guid>
+            <pubDate>Wed, 16 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team started documenting the
+implementation of the UTxO HD feature and continued developing tests for it. As
+part of our work on UTxO HD, we improved the Haskell support for LMDB. We also
+spent time working on the LSM tree prototype, and designed a parameter tuning
+algorithm for it. Regarding our work on Genesis, our investigation of the
+"plateaus" pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This
+led us to developing a caching strategy that will not only remove the
+aforementioned "plateaus", but can help alleviating the growing block production
+delay on epoch switch. We also helped reviewing the block forge credential
+hotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In
+particular, we improved the <code>io-sim</code> framework, which is crucial for testing and
+simulating Cardano components. We also removed thunks that appeared on era
+translations, and improved our diffusion pipelining feature. We are working on a
+presentation for explaining Praos and Genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the
+anti-diff implementation of sequences of differences. Speedups are now in the
+range of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a "parameter tuning algorithm" for the LSM tree
+prototype. This enables us to run experiments to check the correctness of
+the algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the "plateaus" in the <code>ChainSync</code> jumping prototype
+pointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for
+testing and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ "plateaus" led us to developing a caching strategy for
+<code>TICKF</code> that will not only remove these "plateaus", but can help alleviating
+the growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended
+for use in the adoption of P2P.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4060" target="_blank" rel="noopener noreferrer">#4060</a>, which adds a report documenting the UTxO HD
+feature, and puts emphasis in explaining how the mempool works in combination
+with UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the
+mempool (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4143" target="_blank" rel="noopener noreferrer">#4143</a>). The problem was that we were testing with mostly small
+values, which artificially boosted the performance gains we saw on benhcmarks.
+Speedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different
+configurations.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>).
+This required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new
+API. We also updated the backing store property tests to use the new version of
+the monadic cursor API.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a
+"parameter tuning algorithm" that adapts the LSM tree design based on factors
+like:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with
+existing experimental results from the LSM tree paper to see if the algorithm is
+working correctly.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>We focused on investigating the "plateaus" in the <code>ChainSync</code> tip, which turned
+out to be due to the <code>TICKF</code> bug which we previously were only aware of in the
+context of the long forging times near epoch boundaries. For the most drastic
+patch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the
+<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png" width="765" height="445" class="img_ev3q"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the
+baseline.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png" width="773" height="445" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>After addressing the PR comments, we merged PR <a href="https://github.com/input-output-hk/io-sim/pull/16" target="_blank" rel="noopener noreferrer">#16</a>, which implements
+the <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>
+library, which is crucial for testing and simulating Cardano components PR #16
+closed <a href="https://github.com/input-output-hk/ouroboros-network/issues/1461" target="_blank" rel="noopener noreferrer">#1461</a>. This new feature was published as version <code>0.4.0.0</code>
+of <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling
+nightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and
+<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of
+thunks that appeared in era translations (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3143" target="_blank" rel="noopener noreferrer">#3143</a>). The fixes will be
+integrated back into consensus when <code>cardano-ledger</code> approves and publish the
+changes introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/2" target="_blank" rel="noopener noreferrer">#2</a>). We currently test the build on
+a Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3857" target="_blank" rel="noopener noreferrer">#3857</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3860" target="_blank" rel="noopener noreferrer">#3860</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3856" target="_blank" rel="noopener noreferrer">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and
+Genesis explanation presentations. The idea is to produce a video that gives an
+overview of these protocols.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4054" target="_blank" rel="noopener noreferrer">#4054</a>), since this was blocking our benchmarking work for
+Genesis. In addition, this issue has the Cardano community <a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">quite
+concerned</a>, so we are hoping the work done in caching the
+computation of the <code>TICKF</code> rule can help alleviating the growing block
+production delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">#3800</a> from the
+networking team, which is intended for use in the adoption of P2P.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-16-node-cli-api</link>
+            <guid>2022-11-16-node-cli-api</guid>
+            <pubDate>Wed, 16 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-11-16 - 2022-11-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4562" target="_blank" rel="noopener noreferrer">Add a native tokens tutorial and exercises</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4674" target="_blank" rel="noopener noreferrer">Update cardano-cli's help</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4644" target="_blank" rel="noopener noreferrer">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4639" target="_blank" rel="noopener noreferrer">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4650" target="_blank" rel="noopener noreferrer">Fix windows CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & tracing update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-16-performance-and-tracing</link>
+            <guid>2022-11-16-performance-and-tracing</guid>
+            <pubDate>Wed, 16 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-11-crypto</link>
+            <guid>2022-11-11-crypto</guid>
+            <pubDate>Fri, 11 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href="https://github.com/input-output-hk/cardano-base/pull/336" target="_blank" rel="noopener noreferrer">PR</a> has been merged, and we've adapted the KES secure <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#</a>). Finally, we've 'cleaned' our libsodium fork, and we directly fork upstream, rather than forking Algorand's fork. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href="https://github.com/input-output-hk/kes-agent" target="_blank" rel="noopener noreferrer">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-11-hydra</link>
+            <guid>2022-11-11-hydra</guid>
+            <pubDate>Fri, 11 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper
+on our "Hydra for Payments" project (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href="https://github.com/input-output-hk/hydra-poc/issues/599" target="_blank" rel="noopener noreferrer">#599</a>)</li><li>Minor improvements to logging for better observability (<a href="https://github.com/input-output-hk/hydra-poc/issues/598" target="_blank" rel="noopener noreferrer">#598</a>, <a href="https://github.com/input-output-hk/hydra-poc/issues/600" target="_blank" rel="noopener noreferrer">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href="https://github.com/input-output-hk/hydra-poc/issues/590" target="_blank" rel="noopener noreferrer">#590</a>)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Close more gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>"Developing Hydra" on Day 2, Nov 21st, 13:50 CET</strong></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-11-ledger</link>
+            <guid>2022-11-11-ledger</guid>
+            <pubDate>Fri, 11 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned
+CBOR serialization. This was an enormous effort, but it will solve a host of problems that we have
+had since the Shelley phase. It will take time to properly review it, and we will
+need to put in a lot of effort to integrate it with the downstream components, but this is  a huge
+milestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction
+serialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will
+not notice any difference, but it is a necessary change needed to prepare the way for
+decentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on
+bringing coherency and consistency to the code base with a common naming convention, and
+improving some error messages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.
+When we encounter a problem with our deserializers, it can be very difficult to implement a fix.
+It is difficult because we can only fix such issues during a hard fork, and leading up to the
+hard fork we must maintain two serializations for the same type in order to not cause unintended
+network splitting (the problematic version must be used before the hard fork,
+and the fixed version is used afterwards).
+This can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to
+search for where all the problematic uses are located.
+The new versioned CBOR serialization allows us to gracefully handle this transition.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.
+See [<a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">pull-372</a>].</li><li>We have draft for the new deposit tracking.
+This draft is not as memory efficient as the final version will be,
+but it is a sufficient proof of concept that we can write property tests against, ensuring
+that we have not changed the semantics.
+We will optimize after we are sure of the correctness.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper
+function, named <code>evaluateTransactionExecutionUnits</code>.
+In particular, it now returns all the information needed to rerun the script with exactly the
+same arguments. This feature will end up appearing in the CLI and other tools from the Plutus
+tools team.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3135" target="_blank" rel="noopener noreferrer">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3126" target="_blank" rel="noopener noreferrer">pull-3126</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3120" target="_blank" rel="noopener noreferrer">pull-3120</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3118" target="_blank" rel="noopener noreferrer">pull-3118</a>], and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3116" target="_blank" rel="noopener noreferrer">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the
+<a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3139" target="_blank" rel="noopener noreferrer">pull-3139</a>].</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-11-network</link>
+            <guid>2022-11-11-network</guid>
+            <pubDate>Fri, 11 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster
+(which consists of 50 nodes).  There is a performance regression in the header
+notification metric.  The P2P cluster is constructed with the same
+topology as the non-p2p reference one this indicates some regression which
+needs to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P
+release for BP nodes: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with
+<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detail-description">Detail description<a class="hash-link" href="#detail-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance-regression">Performance regression<a class="hash-link" href="#performance-regression" title="Direct link to heading">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png" class="img_ev3q"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of
+the slot to when a header was received. The <code>y</code> axis is the percentile of nodes
+that received a header.  We are currently investigating possible causes of the
+regression. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-p2p-topology-form">New P2P topology form<a class="hash-link" href="#new-p2p-topology-form" title="Direct link to heading">​</a></h3><p>The new topology file format is described in this <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing-improvements">Tracing improvements<a class="hash-link" href="#tracing-improvements" title="Direct link to heading">​</a></h3><ul><li>We improved a handshake error reporting, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4136" target="_blank" rel="noopener noreferrer">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>
+in <code>json</code> format, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">pull #4127</a>.  Such demotions should be investigated by the
+pool operator.  They can indicate a problem in the deployed system, but also
+they could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-improvements">Open Source Improvements<a class="hash-link" href="#open-source-improvements" title="Direct link to heading">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source
+contributors and/or maintenance tasks: <a href="https://github.com/input-output-hk/typed-protocols/pull/22" target="_blank" rel="noopener noreferrer">pull #22</a>, <a href="https://github.com/input-output-hk/io-sim/pull/45" target="_blank" rel="noopener noreferrer">pull #45</a>, <a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pull #48</a>. </p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-04-hydra</link>
+            <guid>2022-11-04-hydra</guid>
+            <pubDate>Fri, 04 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a>. They also completed implementation of <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a> and alignment of the specification document with auditors.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete and merge ADR18 <a href="https://github.com/input-output-hk/hydra-poc/pull/579" target="_blank" rel="noopener noreferrer">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/595" target="_blank" rel="noopener noreferrer">#595</a></li><li>Have first gap of <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Mithril Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-04-mithril</link>
+            <guid>2022-11-04-mithril</guid>
+            <pubDate>Fri, 04 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.]]></description>
+            <content:encoded><![CDATA[<p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we've implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href="https://github.com/input-output-hk/mithril/issues/500" target="_blank" rel="noopener noreferrer">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href="https://github.com/input-output-hk/mithril/issues/542" target="_blank" rel="noopener noreferrer">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href="https://github.com/input-output-hk/mithril/issues/543" target="_blank" rel="noopener noreferrer">#543</a></li><li>Publication of an <a href="https://mithril.network/doc/adr/3" target="_blank" rel="noopener noreferrer">ADR3</a></li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2022/10/28/updated-environments" target="_blank" rel="noopener noreferrer">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2244.0" target="_blank" rel="noopener noreferrer">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href="https://github.com/input-output-hk/mithril/issues/526" target="_blank" rel="noopener noreferrer">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href="https://github.com/input-output-hk/mithril/pull/484" target="_blank" rel="noopener noreferrer">#484</a></li></ul>]]></content:encoded>
+            <category>mithril</category>
+        </item>
+        <item>
+            <title><![CDATA[Open-Source Team]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-31-open-source</link>
+            <guid>2022-10-31-open-source</guid>
+            <pubDate>Fri, 04 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High Level Summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High Level Summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>We've been working toward publishing <em>Cardano Backlog</em>, currently its in
+review by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">cardano-updates</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for
+cardano project.  In last few weeks we were making steps towards publishing our
+backlog.  It's currently under review by the communication team, although most
+of the issues are already visible across various repositories.</p><p>The open-source initiatives have their own
+<a href="https://github.com/orgs/input-output-hk/projects/60" target="_blank" rel="noopener noreferrer">project</a>.  It is set up
+to help us track our major open-source activities.  Right now there are two
+work streams:</p><ul><li>the work on <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href="https://hackage.haskell.org/" target="_blank" rel="noopener noreferrer">Hackage</a> or <a href="https://crates.io" target="_blank" rel="noopener noreferrer">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to
+<em>Cardano</em> which we would like publish to publish, see the following
+<a href="https://github.com/orgs/input-output-hk/projects/60/views/3" target="_blank" rel="noopener noreferrer">link</a>.  Arnauld Bailly recently published
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+library on Hackage.  The networking team is slowly progressing towards
+publishing <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">io-sim</a> and related packages, checkout the progress
+<a href="https://github.com/orgs/input-output-hk/projects/19/views/24" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Thanks to Arnaud Bailly our <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">Cardano Updates</a> website has
+a new look &amp; feel!  It's using <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source
+repositories.  He collected many interesting metrics, which allows us to see
+where we need to improve as an open-source project to make the Cardano project
+and many smaller related libraries which we maintain be more open and available
+for open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano
+repositories are missing the most:
+<img loading="lazy" alt="Documentation Adoption" src="/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png" width="1493" height="716" class="img_ev3q">
+You can expect we will improve in these metrics in the coming weeks.</p>]]></content:encoded>
+            <category>open-source</category>
+        </item>
+        <item>
+            <title><![CDATA[Embedding Quality Workstream]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-03-embedding-quality</link>
+            <guid>2022-11-03-embedding-quality</guid>
+            <pubDate>Thu, 03 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)
+See <a href="https://input-output-hk.github.io/cardano-node-tests" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>We defined an <a href="https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md" target="_blank" rel="noopener noreferrer">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href="https://github.com/input-output-hk/cardano-node/issues" target="_blank" rel="noopener noreferrer">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul>]]></content:encoded>
+            <category>embedding-quality</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-02-consensus</link>
+            <guid>2022-10-02-consensus</guid>
+            <pubDate>Wed, 02 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the
+UTxO HD prototype. We completed the era-transition and backing store tests, and
+the mempool tests are advancing at a steady pace. Regarding our work in the
+Genesis design, we continued our collaboration with the research and networking
+teams, and we continue investigating strategies for making the chain-sync
+jumping prototype faster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs
+in the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to
+incorporate the improvements to the LMDB cursor API that these tests
+made possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and
+the networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping
+prototype. We gained additional insight on which parameters to tweak next.
+In spite of the baseline still being faster, the current prototype already
+achieves a significant speedup when compared to the naive approach of simply
+running full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular
+we merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4073" target="_blank" rel="noopener noreferrer">era-transition tests
+PR</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">backing store property tests
+PR</a> has been
+reviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting
+test cases.</li></ul><p>The <a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">monadic cursor API</a>
+went through its first review round. The API is in a relatively stable state.
+This PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB
+operations. The next steps are:</p><ul><li>Write
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+state-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property
+tests. This will involve adding boilerplate code in consensus to make up for
+the removal of the <code>cborg</code>-based interface.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h2><p>We worked on the <a href="https://github.com/input-output-hk/ouroboros-network/issues/4121" target="_blank" rel="noopener noreferrer">LSM tree
+prototype</a>. In
+particular, we focused on tuning the LSM tree design to the different workloads
+that consensus has (eg syncing, normal node operation, etc).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular
+we compared the performance of different jump intervals, which, somewhat
+surprisingly, do not make a significant difference. In particular, we are seeing
+periodic "plateaus" where the chain-sync tip does not progress, but they are
+much longer for the prototype. Our hypothesis is that this seem to be due to a
+combination of the garbage collector (GC) pauses, and the actual time it takes
+the non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo
+fragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of
+tweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype
+using different jumping intervals. It compares the syncing progress by plotting
+the slots of adopted blocks against time. The baseline is still faster, however
+it is worth noting that the current prototype already achieves a significant
+speedup when compared to the naive approach of simply running full chain-sync
+with all peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg" width="998" height="445" class="img_ev3q"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,
+and includes, in addition to the slots of adopted blocks, the slots of the tip
+of the ChainSync fragment. This allows us to see how far ahead of the selected
+tip the CS dynamo is, i.e. how much room we have for BlockFetch not to get
+stalled. It shows periodic behaviour (due to the forecasting limit), and shows
+that the CS fragment tip is not progressing for significant periods
+("plateaus").</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg" width="998" height="445" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4098" target="_blank" rel="noopener noreferrer">clarified</a> a
+common source of confusion around VRF tie-breaking and cross-era chain
+selection. This PR involved correcting potentially misleading names of
+VRF-related functions, and providing context for a particular VRF value is
+used for tie-breaking.</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-02-ledger</link>
+            <guid>2022-11-02-ledger</guid>
+            <pubDate>Wed, 02 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have made the decision to use the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+in place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure
+to the model. In particular, we now have a lot of support for axiomatic set theory.
+While the next ledger era is still in the design phase, most of the team remains working
+on technical debt.
+In particular, we have moved a lot more code out of the Shelley specific modules and into
+a ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>
+ledger transition (while improving the performance), made conveniences to the development
+environment, cleaned up all the recent changes to the cost model, added a lot of documentation,
+fixed some flaky tests, and deleted some dead code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="axiomatic-set-theory">Axiomatic Set Theory<a class="hash-link" href="#axiomatic-set-theory" title="Direct link to heading">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in
+the formal ledger specifications. See [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>].</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">pull-3039</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3093" target="_blank" rel="noopener noreferrer">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which
+makes our CBOR serialization round-trip tests much more robust, and will also hopefully
+help enforce the mandate for downstream libraries to never re-serialize data that needs
+to be hashed. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3095" target="_blank" rel="noopener noreferrer">pull-3095</a>]
+(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.
+We now have a lot of benchmarks surrounding this code, and have added performance improvements.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>].</li><li>We have restored support for
+<a href="https://hackage.haskell.org/package/ghcid" target="_blank" rel="noopener noreferrer">ghcid</a>
+in our repository. This is a tool for developing with Haskell that many of us find greatly
+improves our productivity by providing us with constant feedback from the type checker.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3112" target="_blank" rel="noopener noreferrer">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3075" target="_blank" rel="noopener noreferrer">pull-3075</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3101" target="_blank" rel="noopener noreferrer">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the
+ledger repository, and cleaned it up
+(most of the heavy lifting was done by our amazing technical writers).
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3091" target="_blank" rel="noopener noreferrer">pull-3091</a>].</li><li>We removed dead code. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3089" target="_blank" rel="noopener noreferrer">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3109" target="_blank" rel="noopener noreferrer">pull-3109</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3110" target="_blank" rel="noopener noreferrer">pull-3110</a>].</li><li>We've removed more of the awkward legacy template Haskell names.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3108" target="_blank" rel="noopener noreferrer">pull-3108</a>].</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-02-node-cli-api</link>
+            <guid>2022-11-02-node-cli-api</guid>
+            <pubDate>Wed, 02 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-11-02 - 2022-11-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4567" target="_blank" rel="noopener noreferrer">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4587" target="_blank" rel="noopener noreferrer">Add Ord instance for AddressInEra</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4496" target="_blank" rel="noopener noreferrer">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4635" target="_blank" rel="noopener noreferrer">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4628" target="_blank" rel="noopener noreferrer">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4599" target="_blank" rel="noopener noreferrer">export RawBytesHexError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/2883" target="_blank" rel="noopener noreferrer">Add Plutus minting script doc</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575/files" target="_blank" rel="noopener noreferrer">Improve test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4586" target="_blank" rel="noopener noreferrer">Enable stale bot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4557" target="_blank" rel="noopener noreferrer">Add link to troubleshooting page in the wiki</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4550" target="_blank" rel="noopener noreferrer">Use environment files in Github Actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4544" target="_blank" rel="noopener noreferrer">Add single entrypoint for starting testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575" target="_blank" rel="noopener noreferrer">Improve cardano-testnet test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4595" target="_blank" rel="noopener noreferrer">Reorder module hierarchy</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Node Release Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-02-release</link>
+            <guid>2022-11-02-release</guid>
+            <pubDate>Wed, 02 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Node Reelease Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-19---2022-11-02">2022-10-19 - 2022-11-02<a class="hash-link" href="#2022-10-19---2022-11-02" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,
+a temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc1 tag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href="https://github.com/input-output-hk/cardano-node/pull/4540" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li><li><p><a href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre" target="_blank" rel="noopener noreferrer">Cicero CI Migration</a></p></li></ul>]]></content:encoded>
+            <category>release</category>
+        </item>
+        <item>
+            <title><![CDATA[System Test Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-02-system-test</link>
+            <guid>2022-11-02-system-test</guid>
+            <pubDate>Wed, 02 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href="https://input-output-hk.github.io/cardano-node-tests/" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests" target="_blank" rel="noopener noreferrer">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul>]]></content:encoded>
+            <category>system-test</category>
+        </item>
+        <item>
+            <title><![CDATA[DB Sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-11-01-db-sync</link>
+            <guid>2022-11-01-db-sync</guid>
+            <pubDate>Tue, 01 Nov 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,
+unique and foreign keys. It also provides a way to fix older values and migrates without the need to
+resync from genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="schema-simplifications">Schema simplifications<a class="hash-link" href="#schema-simplifications" title="Direct link to heading">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1295" target="_blank" rel="noopener noreferrer">#1295</a>
+The same pr also introduces a different way to rollback, which doesn't rely on foreign keys and
+indexes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A
+conservative number of these will be included in the next release and the rest can be found in
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/7" target="_blank" rel="noopener noreferrer">performance view</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="migrations-and-resyncing">Migrations and resyncing<a class="hash-link" href="#migrations-and-resyncing" title="Direct link to heading">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also
+introduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release">Release<a class="hash-link" href="#release" title="Direct link to heading">​</a></h3><p>The release has been mostly cherry-picked from master
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a> and its scope can be seen
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/6" target="_blank" rel="noopener noreferrer">release view</a></p>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-28-hydra</link>
+            <guid>2022-10-28-hydra</guid>
+            <pubDate>Fri, 28 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team completed several user experience improvements to the
+<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head
+states by publishing release version
+<a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>.
+Besides this, they met with researchers on topic of the HeadV1 specification and
+kicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Have a first plutus script gap closed <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-28-network</link>
+            <guid>2022-10-28-network</guid>
+            <pubDate>Fri, 28 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which
+fortunately hasn't been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with
+the scientists on eclipse evasion.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-network-stack">P2P Network Stack<a class="hash-link" href="#p2p-network-stack" title="Direct link to heading">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer
+sharing.  We found and fixed an important bug recently introduced in one of the
+components of p2p networking stack (fortunately never released).  Together with
+a fix, we designed a unit test diffusion simulation as well as quickcheck
+property test (both could reproduce it). We also changed the code in a way that
+if such a bug is reintroduced in the future, it will be obvious to diagnose.
+For more see:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4067" target="_blank" rel="noopener noreferrer">ouroboros-network#4067</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4086" target="_blank" rel="noopener noreferrer">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where
+unlike what we see on the mainnet.  We found a possible misconfiguration of the
+cluster (caused by 0 TTL on domain names), which could be the direct cause of
+it.  We wrote a PR which rules out such misconfiguration.  We are awaiting on
+the next benchmarking results.  See more at:</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">ouroboros-network#4120</a>
+includes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started
+working toward integration these changes against the release branch of
+<code>cardano-node</code>.  Early next week we ought to be able to have an early version
+of <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">P2P - Single
+Relay</a>
+issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus">Consensus<a class="hash-link" href="#consensus" title="Direct link to heading">​</a></h3><p>We identified and fixed missing error reporting in consensus
+initialisation phase.  See more at
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">ouroboros-network#4015</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for
+node operators.  This includes updating severities of some of the traces as
+well as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">cardano-node#4563</a>.</li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4561" target="_blank" rel="noopener noreferrer">cardano-node#4561</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early
+implementation which will be reviewed and analysed in next weeks.  We started
+working on <code>cardano-node</code> integration.  We need
+<a href="https://github.com/input-output-hk/cardano-node/pull/4392" target="_blank" rel="noopener noreferrer">PR #4392</a> to be merged
+before such integration will be able to land in <code>cardano-node</code>, although this
+is <em>not blocking</em> us currently.  See more at:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">ouroboros-network#4019</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and
+Nick Frisby from the consensus team.  We discussed high lever design of the
+eclipse evasion scheme, which is important for the design and implementation of
+<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.
+A single <a href="https://github.com/input-output-hk/io-sim/pull/32" target="_blank" rel="noopener noreferrer">PR</a> which added
+a few missing instances of the <code>STM</code> monad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to
+accept contributions from 3rd parties).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril-cardano-integration">Mithril Cardano Integration<a class="hash-link" href="#mithril-cardano-integration" title="Direct link to heading">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate
+mithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>
+diffusion layer.</p>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Performance & Tracing Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-28-performance-and-tracing</link>
+            <guid>2022-10-28-performance-and-tracing</guid>
+            <pubDate>Fri, 28 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>The new tracing system public release is getting closer, as we're resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul>]]></content:encoded>
+            <category>performance-tracing</category>
+        </item>
+        <item>
+            <title><![CDATA[SRE Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-08-12-sre</link>
+            <guid>2022-08-12-sre</guid>
+            <pubDate>Fri, 28 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra
+with Cicero, and a new version of Spongix.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">OpenZiti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href="https://github.com/input-output-hk/bitte/compare/zt" target="_blank" rel="noopener noreferrer">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href="https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994" target="_blank" rel="noopener noreferrer">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,
+we're making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte
+clusters utilizing a Ziti ZTNA network overlay to bridge the networking of
+the two environments and get IAM extension to Equinix machine for Nomad
+client onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,
+Controller, Edge Tunnel, and Router is now at [<a href="https://github.com/johnalotoski/openziti-bins" target="_blank" rel="noopener noreferrer">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with
+no issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and
+controller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul
+services</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-integrations">Cicero &amp; Tullia Integrations<a class="hash-link" href="#cicero--tullia-integrations" title="Direct link to heading">​</a></h3><ul><li>Added webhook for [<a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href="https://github.com/input-output-hk/cardano-addresses/pull/205" target="_blank" rel="noopener noreferrer">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href="https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946" target="_blank" rel="noopener noreferrer">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href="https://github.com/input-output-hk/abcirdc/pull/104" target="_blank" rel="noopener noreferrer">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href="https://github.com/input-output-hk/cicero/pull/66" target="_blank" rel="noopener noreferrer">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href="https://github.com/input-output-hk/plutus" target="_blank" rel="noopener noreferrer">plutus</a>]
+[<a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer">cardano-prelude</a>], and [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>].</li><li>Merged [<a href="https://github.com/input-output-hk/cardano-base/pull/323" target="_blank" rel="noopener noreferrer">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href="https://github.com/input-output-hk/cardano-ogmios/pull/5" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-explorer-app/pull/427" target="_blank" rel="noopener noreferrer">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3097" target="_blank" rel="noopener noreferrer">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-node/pull/4489" target="_blank" rel="noopener noreferrer">cardano-node-pull-4489</a>] to add Tullia and Cicero, including
+OS-agnostic jobs.</li><li>Opened [<a href="https://github.com/input-output-hk/ouroboros-network/pull/4108" target="_blank" rel="noopener noreferrer">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href="https://github.com/input-output-hk/plutus/pull/4918" target="_blank" rel="noopener noreferrer">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href="https://github.com/input-output-hk/abcirdc/pull/97" target="_blank" rel="noopener noreferrer">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-features">Cicero &amp; Tullia Features<a class="hash-link" href="#cicero--tullia-features" title="Direct link to heading">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>] build
+correctly.</li><li>Better tullia CUE lib default for tags [<a href="https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245" target="_blank" rel="noopener noreferrer">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>'s upstreams. This is now
+considered a public cache again, and without it some Cicero evaluations had
+to build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in
+JSON files.</li><li>Fixed running into kernel arg limit by reading tullia's DAG from a file</li><li>Merged [<a href="https://github.com/input-output-hk/tullia/pull/9" target="_blank" rel="noopener noreferrer">tullia-pull-9</a>] that fixes several issues related to error reporting.
+and escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports
+the full HTTP binary cache protocol but still lacks comprehensive testing and
+some tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so
+Spongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugs">Bugs<a class="hash-link" href="#bugs" title="Direct link to heading">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status
+to get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for
+codependent actions.</li><li>Fixed tullia task order bug in [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href="https://github.com/input-output-hk/tullia/pull/7" target="_blank" rel="noopener noreferrer">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href="https://github.com/input-output-hk/bitte-cells/pull/40" target="_blank" rel="noopener noreferrer">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related
+to token rotation.</li></ul>]]></content:encoded>
+            <category>sre</category>
+        </item>
+        <item>
+            <title><![CDATA[Crypto Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-27-crypto</link>
+            <guid>2022-10-27-crypto</guid>
+            <pubDate>Thu, 27 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level overview]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to
+meeting the <a href="https://github.com/input-output-hk/cardano-base/issues/315" target="_blank" rel="noopener noreferrer">acceptance criteria</a> in cardano-base,
+which lacks some editorial comments on the style of dQuandrant's PR, the inclusion of one additional test, and
+we are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,
+but also progressing on the implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp-built-ins">SECP built-ins<a class="hash-link" href="#secp-built-ins" title="Direct link to heading">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/313" target="_blank" rel="noopener noreferrer">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href="https://github.com/cardano-foundation/CIPs/pull/250" target="_blank" rel="noopener noreferrer">PR 250</a> was merged</li><li>The unit-tests <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul>]]></content:encoded>
+            <category>crypto</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-21-hydra</link>
+            <guid>2022-10-21-hydra</guid>
+            <pubDate>Fri, 21 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the
+new HeadV1 specification, completing a list the of identified gaps between
+specification and implementation while doing so. In the wake of the recent
+demonstration of SundaeSwap running their DEX in a Hydra Head, they met with
+them to capture feature ideas &amp; incorporate their feedback on the roadmap, as
+well as potential research avenues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href="https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022" target="_blank" rel="noopener noreferrer">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href="https://github.com/input-output-hk/hydra-poc/issues/538" target="_blank" rel="noopener noreferrer">#538</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-19-node-cli-api</link>
+            <guid>2022-10-19-node-cli-api</guid>
+            <pubDate>Wed, 19 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h1>2022-10-19 - 2022-11-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node's mempool for the following information:</p><ul><li>Ask the node about the current mempool's capacity and sizes</li><li>Request the next transaction from the mempool's current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4554" target="_blank" rel="noopener noreferrer">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4568" target="_blank" rel="noopener noreferrer">Add ToJSON and FromJSON instances for Address</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4565" target="_blank" rel="noopener noreferrer">Export TxIns type alias from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4534" target="_blank" rel="noopener noreferrer">Export more generators from cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-submit-api">cardano-submit-api<a class="hash-link" href="#cardano-submit-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4566" target="_blank" rel="noopener noreferrer">Add tx_submit_fail_count metric</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4549" target="_blank" rel="noopener noreferrer">Upgrade to cabal-3.8.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4613" target="_blank" rel="noopener noreferrer">Update building-the-node-using-nix.md</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li>None</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-18-consensus</link>
+            <guid>2022-10-18-consensus</guid>
+            <pubDate>Tue, 18 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High-level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for
+different aspects of the UTxO HD prototype: era transitions, mempool, and
+backing store. Thanks to these tests we were able to uncover a bug in the
+prototype. On the Genesis front, we benchmarked a different version of the
+ChainSync jumping prototype to try to improve its performance, but this did not
+result in any noticeable speedup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This
+uncovered a bug in the range-read implementation of the LMDB backing
+store.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that
+spreads out the ChainSync updates over a longer period of time. This did not
+result in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no
+conclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged
+the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">mempool
+rewrite</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="era-transition-property-tests">Era transition property tests<a class="hash-link" href="#era-transition-property-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4043" target="_blank" rel="noopener noreferrer">Cardano era transition property
+tests</a>,
+which are needed for making sure that the ledger tables get updated in the
+right way when we move from one era to the next. There are at the moment two
+important transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron
+state (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding
+the remaining ones.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="mempool-state-machine-tests">Mempool state-machine tests<a class="hash-link" href="#mempool-state-machine-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4044" target="_blank" rel="noopener noreferrer">state-machine property tests for the
+mempool</a>.
+The mempool is currently tested via pure property tests, and use a ledger
+state without tables. With the introduction of UTxO HD, testing the concurrent
+behavior of the mempool became of crucial importance (eg now we have to
+acquire locks to flush the backing store). In addition, we need to test a
+ledger state with tables. These needs led to the creation of a new set of
+property tests. In particular we aim to run parallel state-machine tests that
+exercise the mempool in a way similar to how the node would make use of it.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We started working on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">state-machine tests for the backing
+store</a> that UTxO
+HD uses. The property tests uncovered errors in the range-reads implementation
+of the LMDB backing store. To facilitate fixing this bug, we made
+<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">changes</a> to the Haskell
+LMDB bindings.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by
+using more capabilities, we implemented a way to spread out the ChainSync
+updates over a larger period instead of firing them all at the same time. This
+didn't result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo
+peer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule
+out/confirm overhead by non-ChainSync (mainly BlockFetch) related components.
+This results in era-specific behavior (speed is like the prototype in Byron, but
+like the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg" width="654" height="459" class="img_ev3q"></p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Hydra Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-14-hydra</link>
+            <guid>2022-10-14-hydra</guid>
+            <pubDate>Fri, 14 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks "past the opening of a Head". We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Last week we thought we were done with <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> in response.</li><li>Enhanced CI to publish test results <a href="https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results" target="_blank" rel="noopener noreferrer">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href="https://github.com/input-output-hk/hydra-poc/issues/200" target="_blank" rel="noopener noreferrer">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Have the CI build macos artifacts</li></ul>]]></content:encoded>
+            <category>hydra</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-14-ledger</link>
+            <guid>2022-10-14-ledger</guid>
+            <pubDate>Fri, 14 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team is still primarily focused on addressing
+<a href="https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22" target="_blank" rel="noopener noreferrer">technical</a>
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/3" target="_blank" rel="noopener noreferrer">debt</a>.
+We now have the infrastructure for versioning our serialization schemes,
+which we continue to put into action.
+We have made first steps towards getting proper support for the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+(in particular, we've added nix builds and
+continuous integration support).
+We are wrapping up an investigation of the performance of a critical
+function used by the consensus layer for leader checks.
+Finally, we are improving the packaging and versioning of our code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of
+our code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that
+much of it should live in <code>cardano-ledger-core</code>.
+We continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3059" target="_blank" rel="noopener noreferrer">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.
+The inability to do this has caused us a lot difficulties,
+such as [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>].
+We are still in the process of switching to the versioned serialization scheme
+(such as [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3078" target="_blank" rel="noopener noreferrer">pull-3078</a>]),
+but the infrastructure was completed in [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3063" target="_blank" rel="noopener noreferrer">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/19" target="_blank" rel="noopener noreferrer">pull-19</a>]</li><li>A separate team is helping bring support for
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>
+to all the cardano-node repositories.
+We have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4.
+We have been helping out with this effort.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress-technical-debt">In-progress Technical Debt<a class="hash-link" href="#in-progress-technical-debt" title="Direct link to heading">​</a></h3><p>We also have several fairly large pull-requests in review
+that we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,
+we continue to remove <code>HasField</code> instances in place of using micro-lenses.
+The protocol parameters, in particular, are being worked on. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3045" target="_blank" rel="noopener noreferrer">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3062" target="_blank" rel="noopener noreferrer">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance
+of the TICKF transition. We have some improvements to the computatation
+as well. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>]</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-05-consensus</link>
+            <guid>2022-10-05-consensus</guid>
+            <pubDate>Wed, 05 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[High level summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on improving the
+performance of the ChainSync jumping logic, which is needed for Genesis. We also
+rewrote the implementation of the mempool in the UTxO HD prototype which solved
+the issues that prevented us from running system level benchmarks. Also on the
+UTxO HD front, we have an improved implementation of the sequence-of-differences
+(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for
+the UTxO HD feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the
+baseline performance. In particular, the prototype seems to benefit from the
+extra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This
+rewrite was required due to performance problems we observed when running the
+<a href="https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51" target="_blank" rel="noopener noreferrer">workbench</a>.
+These performance problems prevented us from running system level benchmarks.
+The rewrite solved these issues. After the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">UTxO-HD: mempool
+rewrite</a> PR is
+merged, we will contact the Benchmarking team so that they run the system
+level benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was
+integrated into the UTxO HD prototype. It is pending
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4036" target="_blank" rel="noopener noreferrer">review</a> and
+we also need to run replay and syncing benchmarks to confirm that this will
+deliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3944" target="_blank" rel="noopener noreferrer">The UTxO HD prototype
+inspection</a>
+resulted in a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4045" target="_blank" rel="noopener noreferrer">list of
+tests</a>
+needed for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="additional-information">Additional information<a class="hash-link" href="#additional-information" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,
+we tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg" width="654" height="459" class="img_ev3q"></p><p>Further work includes whether we can tune the prototype to better handle few
+capabilities, or to adapt the default number of capabilities (potentially just
+while syncing).</p>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[DB Sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-04-db-sync</link>
+            <guid>2022-10-04-db-sync</guid>
+            <pubDate>Tue, 04 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[DBSync Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fast-restarts">Fast restarts<a class="hash-link" href="#fast-restarts" title="Direct link to heading">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>. This has been
+one of db-sync main objectives for this period. Restarts are now very fast,
+because db-sync deletes almost nothing from the db, it just replays the ledger rules until it
+reaches the tip of the db. The fix also improves reconnection speed, in cases where the node
+restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a
+deployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="property-based-testing">Property based testing<a class="hash-link" href="#property-based-testing" title="Direct link to heading">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1269" target="_blank" rel="noopener noreferrer">1269</a>. These tests use empty or
+almost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">RollForward Int</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RollBack BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StopDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StartDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RestartNode</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AssertBlockNo BlockNo</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block
+that fits on the current chain. These real commands are executed against db-sync using the mock
+chain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync
+which looks like this:</p><div class="language-haskell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-haskell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">  Model</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    { serverTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSyncTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsIsOn :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsHasSynced :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    }</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We handled a number of tech debt in
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1275" target="_blank" rel="noopener noreferrer">1275</a>
+This improves the code format of db-sync, deletes many queries that were never used and groups the
+others. This tech debt resolution not only improves the experience of working in db-sync, but can
+facilitate some of our other objectives, as it makes it very explicit which queries are used
+during syncing and which indexes are necessary.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="smash">Smash<a class="hash-link" href="#smash" title="Direct link to heading">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1276" target="_blank" rel="noopener noreferrer">1276</a>.
+The issue which is described in
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1270" target="_blank" rel="noopener noreferrer">1270</a></p>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Node API & CLI Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-10-04-node-cli-api</link>
+            <guid>2022-10-04-node-cli-api</guid>
+            <pubDate>Tue, 04 Oct 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Node-Api-Cli Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-update">Node-Api-Cli Update<a class="hash-link" href="#node-api-cli-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-04---2022-10-18">2022-10-04 - 2022-10-18<a class="hash-link" href="#2022-10-04---2022-10-18" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The majority of the team's time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4504" target="_blank" rel="noopener noreferrer">GHC 9.2.4 preparations</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h4><ul><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4491" target="_blank" rel="noopener noreferrer">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4501" target="_blank" rel="noopener noreferrer">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4526" target="_blank" rel="noopener noreferrer">Fix MacOS GHA CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.34.4</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul>]]></content:encoded>
+            <category>cli-api</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-30-ledger</link>
+            <guid>2022-09-30-ledger</guid>
+            <pubDate>Fri, 30 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Ledger Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have continued focusing nearly entirely on addressing technical debt.
+A lot of design work has begun for the next ledger era,
+but we do not yet have anything concrete to share.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-issues-completed">Technical debt issues completed<a class="hash-link" href="#technical-debt-issues-completed" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/1676" target="_blank" rel="noopener noreferrer">issue-1676</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>] We have finally removed the ledger dependency on the
+<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency
+that we did not want to maintain. It was a bit difficult to remove, and we had
+to coordinate removing it from cardano-base.
+A lot ended up going into <a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>, due to the coordination effort, and we ended
+up updating Plutus as well.
+This means that we've now also made a lot of progress on the problematic cost model serialization
+issues described in <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+In particular, after we resolve <a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>, we will not have to wait an epoch before
+releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3046" target="_blank" rel="noopener noreferrer">issue-3046</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3055" target="_blank" rel="noopener noreferrer">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3047" target="_blank" rel="noopener noreferrer">issue-3047</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3054" target="_blank" rel="noopener noreferrer">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3044" target="_blank" rel="noopener noreferrer">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates
+were adding approximately 20 minutes to our compile time!</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2932" target="_blank" rel="noopener noreferrer">issue-2932</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3036" target="_blank" rel="noopener noreferrer">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we
+have added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.
+Most classes defined in the era should go in this new module.
+We also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>
+modules from each era.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-in-progress">Technical debt in progress<a class="hash-link" href="#technical-debt-in-progress" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3034" target="_blank" rel="noopener noreferrer">issue-3034</a>][<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>][<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where
+all the time is being spent on executing the <code>TICKF</code> transition.
+The consolidation of the per-stake-credential stake distribution to the per-stake-pool
+distribution does seem to account for a large amount of time (near a second as written, which we
+have down to about half a second with some optimizations),
+but this does not account for everything.
+Applying the reward update may also be a big contributing factor.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3033" target="_blank" rel="noopener noreferrer">pull-3033</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3038" target="_blank" rel="noopener noreferrer">pull-3038</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3041" target="_blank" rel="noopener noreferrer">pull-3041</a>] A separate team is working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>
+do not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger
+serializers.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-27-network</link>
+            <guid>2022-09-27-network</guid>
+            <pubDate>Tue, 27 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Network Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See
+<a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in
+progress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3980" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3905" target="_blank" rel="noopener noreferrer">issue input-output-hk/cardano-node#3905</a> in
+the simulation testing of diffusion
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4004" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.
+When deploying we found an issue in the
+<a href="https://github.com/input-output-hk/cardano-node/issues/3752" target="_blank" rel="noopener noreferrer"><code>RTView</code></a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-consensus">Ouroboros Consensus<a class="hash-link" href="#ouroboros-consensus" title="Direct link to heading">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during
+intiialisation.  This was fixed in
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#4015</a>
+As part of this pull request we also changed that all exceptions rethrown by
+the connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="some-older-items-which-were-not-announced">Some older items, which were not announced<a class="hash-link" href="#some-older-items-which-were-not-announced" title="Direct link to heading">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options
+where not set for sockets passed through socket activation).
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#3979</a>
+This fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,
+<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,
+<code>traceSocketPathConnect</code> and <code>stateDir</code> options.
+<a href="https://github.com/input-output-hk/cardano-node/pull/4196" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2797" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2797</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2650" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2650</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3436" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#3436</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2588" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2588</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2587" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2587</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2586" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href="https://github.com/input-output-hk/io-sim/pull/24" target="_blank" rel="noopener noreferrer">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href="https://github.com/input-output-hk/io-sim/pull/25" target="_blank" rel="noopener noreferrer">PR input-output-hk/io-sim#25</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:
+<a href="https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem" target="_blank" rel="noopener noreferrer">coot/typed-protocols-rewrite-StateToken-problem</a>.
+That's too be resolved in order to push forward review of the redesign in
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:
+<a href="https://github.com/input-output-hk/typed-protocols/pull/11" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="input-endorsers-simulation">Input Endorsers Simulation<a class="hash-link" href="#input-endorsers-simulation" title="Direct link to heading">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU
+(block validation). This is interesting to check that we're not overloading
+the CPU block validation capacity, or network link capacity. Or alternatively
+to observe the behaviour in an overload situation if we set the block
+generation rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of
+links are being used at any one time, and shows that once the system "warms
+up" and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple
+charts, titles etc on screen at once and scale them to whatever screen or
+video resolution we like without having to tweak numbers (this example is
+scaled to fit 1080HD video resolution).</p></li></ul><div style="width:640px;height:360px"></div>]]></content:encoded>
+            <category>network</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-20-consensus</link>
+            <guid>2022-09-20-consensus</guid>
+            <pubDate>Tue, 20 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[- We proposed a fix for the performance degradation observed when running]]></description>
+            <content:encoded><![CDATA[<ul><li>We proposed a fix for the performance degradation observed when running
+distributed multi-node benchmarks in the UTxO HD feature branch. While this
+fixed the problems observed when running local benchmarks, it broke the
+<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to
+start redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of
+diff-sequences required by the UTxO HD feature based on the idea of
+anti-diffs. This alternative implementation is close to being merged, and the
+next step is to integrate this to the UTxO HD branch, so that we can run
+ad-hoc replaying and syncing from scratch benchmarks and compare these with
+the baseline. The micro-benchmarks we elaborated for the alternative
+implementation show speedups of up to 4x, so we are optimistic about the
+performance of replaying and syncing from scratch benchmarks, however it is
+important to notice that <em>due to the nature of UTxO HD</em> we will still be
+slower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for
+review.</li><li>We implemented a prototype for the happy path of Genesis' ChainSync Jumping
+(CSJ). The prototype is slower than the baseline, however it is not the latest
+version of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031" target="_blank" rel="noopener noreferrer">stopped</a> since
+priorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pr-4014</a>. To this end, we made use of a modified version of our
+<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano
+mainnet chain, and we can see that block tick and application take
+substantially longer at epoch boundaries, although there are a couple of slots
+during an epoch in which these computations take more than normal. We notified
+the ledger team about these findings. We will use this modified version of
+<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in
+performance observed in the benchmarks. We run the <code>make forge-stress</code>
+benchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn't make a notable difference in the outcome
+(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction
+validation which is a violation of the <code>LocalTxSubmission</code> protocol
+contract and therefore if we continued on that route, the impact would
+have been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal
+state was buggy and under certain circumstances it seemed to lock.
+Reverting the mempool internal state to be stored in a <code>TVar</code> seems to
+solve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones
+from the baseline.</p></li></ul></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/3997" target="_blank" rel="noopener noreferrer">The anti-diff prototype (PR
+#3997)</a> has
+been reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4010" target="_blank" rel="noopener noreferrer">issue
+#4010</a>)
+to integrate the anti-diff prototype in the various <code>consensus</code> packages
+was created. A first version of the integration exists, and all tests
+pass. A next step is to get some indication of the "real" performance gain
+by profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync
+Jumping (CSJ) prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3987" target="_blank" rel="noopener noreferrer">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)
+number of servers periodically while syncing. These servers are offered
+jump requests via the ChainSync protocol (hence the name), which they can
+accept or decline. If a peer declines, the Genesis rule allows us to
+determine whether a node actually has a better chain.</p></li><li><p>The "happy path" is when no peer declines a jump. We want this to have
+close to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to
+test in various configurations (number of peers, latency, bandwidth) to
+tune the performance of ChainSync jumping, i.e. how complicated our logic
+of choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to
+<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg" width="654" height="459" class="img_ev3q"></p><p>It is slower by about ~30%, but it is not the latest version of the
+prototype, and the jump interval is very small, making CSJ more of a
+bottleneck.</p></li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3990" target="_blank" rel="noopener noreferrer">PR 3990</a>).</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[DB Sync Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-19-db-sync</link>
+            <guid>2022-09-19-db-sync</guid>
+            <pubDate>Mon, 19 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[DBSync Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tag">New Tag<a class="hash-link" href="#new-tag" title="Direct link to heading">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last
+release 13.0.4. It is currently under testing.
+The Changelog is
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305" target="_blank" rel="noopener noreferrer">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn't include a total collateral field.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1248" target="_blank" rel="noopener noreferrer">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1247" target="_blank" rel="noopener noreferrer">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but
+could result in the wrong CBOR encoding being inserted.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1217" target="_blank" rel="noopener noreferrer">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs
+for different networks, these are directly fetched from the cardano world.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1254" target="_blank" rel="noopener noreferrer">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1260" target="_blank" rel="noopener noreferrer">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made the db-sync <a href="https://github.com/orgs/input-output-hk/projects/52/views/1" target="_blank" rel="noopener noreferrer">board public</a>, so
+everyone can have access on the issues we prioritise.
+We also added new tasks to the board, some of them could be approachable to newcomers or people who
+want to contribute.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-tech-debt-and-new-features">Progress on tech debt and new features<a class="hash-link" href="#progress-on-tech-debt-and-new-features" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1223" target="_blank" rel="noopener noreferrer">1223</a> was merged, which removes the
+foreign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1250" target="_blank" rel="noopener noreferrer">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>.
+This allows db-sync to restart much faster, without the need to delete data and reinsert them. In
+the future it can also facilitate migrations in cases where the ledger snapshots have a breaking
+change, without the need to resync everything from genesis.</p></li></ul>]]></content:encoded>
+            <category>db-sync</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-16-ledger</link>
+            <guid>2022-09-16-ledger</guid>
+            <pubDate>Fri, 16 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Ledger Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3032" target="_blank" rel="noopener noreferrer">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of
+confusion), and added some related support to the fledgling ledger API.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3016" target="_blank" rel="noopener noreferrer">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3017" target="_blank" rel="noopener noreferrer">3017</a>.</li><li>We removed code duplication related to the input data hashes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3018" target="_blank" rel="noopener noreferrer">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our
+CI to time out.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3020" target="_blank" rel="noopener noreferrer">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3023" target="_blank" rel="noopener noreferrer">3023</a>,
+<a href="https://github.com/input-output-hk/cardano-ledger/pull/3031" target="_blank" rel="noopener noreferrer">3031</a>,
+and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3028" target="_blank" rel="noopener noreferrer">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3024" target="_blank" rel="noopener noreferrer">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific
+choice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3027" target="_blank" rel="noopener noreferrer">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric
+types that will compose better in the future and which simplifies the constraints.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3029" target="_blank" rel="noopener noreferrer">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a
+given transaction. This is a much needed cleanup to prevent future mistakes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3019" target="_blank" rel="noopener noreferrer">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to
+fail in CI.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major
+protocol version, and also address a
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">problem</a>
+that we current have evolving the cost models.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3030" target="_blank" rel="noopener noreferrer">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely
+the lack of some serialization instances.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3022" target="_blank" rel="noopener noreferrer">3022</a>.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Ledger Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-09-01-ledger</link>
+            <guid>2022-09-01-ledger</guid>
+            <pubDate>Thu, 01 Sep 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Ledger Update]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been
+focused on two main things: a new ledger era and technical debt.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-minimal-ledger-era">New minimal ledger era<a class="hash-link" href="#new-minimal-ledger-era" title="Direct link to heading">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical
+to the <code>babbage</code> era. This has been the first time that we have been able to see
+what a minimal ledger era looks like. We have finished this task, modulo any
+integration issues that might come up. The only thing that the <code>conway</code> era
+does differently from the <code>babbage</code> era is provide support for rotating
+the master keys using the hardfork combinator's state translation.
+We may end up adding features to the <code>conway</code> era, but it is a nice exercise
+seeing what it looks like to get a minimal ledger era supported in all the
+downstream components.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="addressing-technical-debt">Addressing technical debt<a class="hash-link" href="#addressing-technical-debt" title="Direct link to heading">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the
+repository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.
+With hindsight on our side, we now have something much more organized and
+easier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more
+uniform, avoid certain confusions that plagued us, and are clearer in where
+they are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you
+do not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of
+values that can be minted in a transaction no longer allow for Lovelace
+in the type, and some functions which used to handle both timelock scripts
+and plutus script now correctly enoforce at the type level that only one of
+them can be used.</li><li>We made our generators so that they now produce a much richer set of
+valid serializations. There is room within CBOR to serialize the same
+data structure in multiple ways, and it is helpful to have the generators
+use a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul>]]></content:encoded>
+            <category>ledger</category>
+        </item>
+        <item>
+            <title><![CDATA[Consensus Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-08-31-consensus</link>
+            <guid>2022-08-31-consensus</guid>
+            <pubDate>Wed, 31 Aug 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[Executive summary]]></description>
+            <content:encoded><![CDATA[<h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A
+possible bug was identified. Work is ongoing to make sure the property-tests
+cover all the relevant cases.</li><li>We implemented and benchmarked the "anti-diff" prototype to speed up the UTxO
+HD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across
+several scenarios. Note that: <a href="https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html" target="_blank" rel="noopener noreferrer">"Data reported by <code>tasty-bench</code> is only of
+indicative and comparative significance."</a>.
+We are investigating additional performance improvements. The "anti-diff"
+prototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and
+<code>ChainSync</code> jumping optimization.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3962" target="_blank" rel="noopener noreferrer">Issue #3963</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">PR
+#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which
+data should be changed in the Conway era. As a result, a new technical debt
+issue was raised, which does not block the integration of the Conway era
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3976" target="_blank" rel="noopener noreferrer">Issue #3976</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3954" target="_blank" rel="noopener noreferrer">Issue #3954</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests" target="_blank" rel="noopener noreferrer">branch</a>: The functionality of a
+backing store, which is the interface to the on-disk part of ledger state in
+UTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some
+functionalities remain untested, e.g., reads of ranges of keys. As such, we
+have implemented <code>quickcheck-state-machine</code> tests that exercise backing stores
+directly. The tests are reusable for different backing store implementations
+because the tests are implementation-agnostic: Any backing store that conforms
+to the backing store interface can be plugged into the tests. Work is still
+ongoing to label/monitor the tests, such that we can verify that interesting
+cases are being tested. Furthermore, a possible bug has been identified in the
+LMDB backing store with respect to range reads, though the bug has not been
+resolved yet.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3946" target="_blank" rel="noopener noreferrer">Issue #3946</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs" target="_blank" rel="noopener noreferrer">branch</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3882" target="_blank" rel="noopener noreferrer">PR #3882</a>: The
+"anti-diff" prototype proposes an alternative approach to keeping track of
+sequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences
+are a component of the in-memory parts of the ledger state in UTxO-HD. Since
+the consensus code often requires the cumulative diff of a sequence of diffs,
+the current implementation "caches" cumulative diffs of each subtree in the
+diff sequence. This caching allows relatively fast reconstruction of the total
+cumulative diff, but this caching proved to incur a non-negligible cost: when
+we manipulate diff sequences through splits and appends, we force re-computing
+a logarithmic number of caches. This is problematic, since we often split and
+append in consensus: we split when we flush diffs to a backing store or when
+we roll back blocks, and we append when pushing blocks. The new approach
+should reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the "anti-diff" prototype: we
+first generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or
+<code>Rollback</code>) through a simulation, after which we measure the performance of
+applying the commands to a diff sequence. In this context, <code>Forward</code> means
+forwarding of values through a diff, whereas <code>Rollback</code> means switching to
+a different fork by rolling back diffs/blocks and pushing new ones.
+Moreover, we compare the performance for the two implementations: the
+"legacy" approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the
+benchmark's configuration to obtain more definitive results. After a
+discussion with @dcoutts and the consensus team about this configuration
+(e.g., number of commands generated, choice of the security parameter <code>k</code>),
+the benchmarks should now be closer to the realistic setting. The following
+configuration specifies the default configuration that is used in the
+benchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-read-results">How to read results<a class="hash-link" href="#how-to-read-results" title="Direct link to heading">​</a></h3><p>Note: this section uses documentation from the
+<a href="https://hackage.haskell.org/package/tasty-bench" target="_blank" rel="noopener noreferrer">tasty-bench</a> package to
+explain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AntiDiff:                               OK (18.27s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">LegacyDiff:                             OK (32.73s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff
+prototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),
+its predicted mean CPU time was <code>2.527</code> seconds and means of individual
+samples do not often diverge from it further than <code>± 47</code> milliseconds
+(double standard deviation). We also configure the RTS to collect GC
+statistics, which enables <code>tasty-bench</code> to estimate and report memory usage.
+This data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,
+<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first
+benchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a
+total of <code>544 MB</code> of memory were copied, and that the peak memory in usage
+was <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for
+both the anti-diff and legacy approaches: In this case, the mean CPU time
+for the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy
+approach. Conversely, the mean CPU time for the legacy approach is
+<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will
+call <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to
+noise, randomness, the specific configuration parameters, and the whims
+of statistics. Data reported by <code>tasty-bench</code> is only of indicative and
+comparative significance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="results">Results<a class="hash-link" href="#results" title="Direct link to heading">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and
+legacy approaches 5 times. We run the benchmarks 5 times to get an indication
+of whether the results are similar across multiple runs. Furthermore, we
+calculate the accompanying <em>ranges</em> (if applicable) of improvement factors and
+speedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for
+the anti-diff approach compared to the legacy approach.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="default-configuration">Default configuration<a class="hash-link" href="#default-configuration" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks">No rollbacks<a class="hash-link" href="#no-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="only-small-rollbacks">Only small rollbacks<a class="hash-link" href="#only-small-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks-larger-flushes-every-100-pushes">No rollbacks, larger flushes (every 100 pushes)<a class="hash-link" href="#no-rollbacks-larger-flushes-every-100-pushes" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and
+the ChainSync Jumping optimization. In particular, this includes a proof
+sketch that the latter preserves liveness and safety in all cases (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3964" target="_blank" rel="noopener noreferrer">Issue
+3964</a>).<ul><li>@nfrisby's main realization during this sprint was that he had been
+focusing so far on the case where the selected chain is an extension of
+the intersection of our peers' ChainSync candidates.</li><li>This is the main case, ie an "absorbing" state, but it's not the only
+case.</li><li>The new proof sketch begins by case splitting on that predicate, and
+that made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the "happy path" <code>ChainSync</code> Jumping prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3960" target="_blank" rel="noopener noreferrer">Issue
+3960</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..
+Nightly CI runs have far more lax time constraints, which gives the option to
+run significantly more property tests than in our regular CI. To this end, we
+merged a PR to easily adapt the number of tests globally (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3947" target="_blank" rel="noopener noreferrer">PR
+#3947</a>).</li></ul>]]></content:encoded>
+            <category>consensus</category>
+        </item>
+        <item>
+            <title><![CDATA[Network Team Update]]></title>
+            <link>https://input-output-hk.github.io/cardano-updates/2022-08-12-network</link>
+            <guid>2022-08-12-network</guid>
+            <pubDate>Fri, 12 Aug 2022 00:00:00 GMT</pubDate>
+            <description><![CDATA[The networking team took an active part in the project iteration (PI) planning]]></description>
+            <content:encoded><![CDATA[<p>The networking team took an active part in the project iteration (PI) planning
+session, see cardano-node <a href="https://github.com/orgs/input-output-hk/projects/39" target="_blank" rel="noopener noreferrer">backlog</a> for detailed
+outcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/3859" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3859</a> which
+sets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3852" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3852</a>.
+The above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and
+identified some deployment hiccups.  We identified some bugs in the RT view
+which were registered by the maintainers.
+<a href="https://github.com/input-output-hk/ouroboros-network-ops/pull/4" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3921" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3922" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to
+identify and fix a bug in the simulator.  The simulation contains 50 nodes.
+Dashed lines indicate and established connection, while solid lines indicate
+a TCP connection with fully open TCP window.</p></li></ul><div style="width:640px;height:360px"></div>]]></content:encoded>
+            <category>network</category>
+        </item>
+    </channel>
+</rss>
\ No newline at end of file
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+++ b/sitemap.xml
@@ -0,0 +1 @@
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;cip1694&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-20-cip1694">Initial CIP 1694 Security Analysis and Responses</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-20T00:00:00.000Z" itemprop="datePublished">November 20, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule &quot;The Cardano network must always be able to produce new blocks&quot; - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a &#x27;guardrails document&#x27; in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cip-1694">cip1694</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/security">security</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-14-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-14T00:00:00.000Z" itemprop="datePublished">November 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-11-01 - 2023-11-14</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Improve golden tests</li><li>Clean-up of conway era commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/451" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (6/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/448" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences (5/6)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/444" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by usage of new functions ✨ (4/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/443" target="_blank" rel="noopener noreferrer">put n shelley/byron key witnesses arguments in correct order</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/441" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (3/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/436" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (2/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/435" target="_blank" rel="noopener noreferrer">Update to <code>cardano-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/434" target="_blank" rel="noopener noreferrer">Remove remaining uses of <code>IsCardanoEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/432" target="_blank" rel="noopener noreferrer">Release 8.14.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/430" target="_blank" rel="noopener noreferrer">Upgrade cardano-api to 8.30</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/428" target="_blank" rel="noopener noreferrer">Command types for <code>node</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/427" target="_blank" rel="noopener noreferrer">Split governance <code>MIRTransferConstructor</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/426" target="_blank" rel="noopener noreferrer">Replace usages of assertFileOccurences by comparisons with golden files (1/n)</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/425" target="_blank" rel="noopener noreferrer">Command argument types for <code>drep</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/421" target="_blank" rel="noopener noreferrer">Add golden test for <code>governance action create-no-confidence</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/419" target="_blank" rel="noopener noreferrer">Command arguments types for stake-pool commands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/364" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.31.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/360" target="_blank" rel="noopener noreferrer">Use ledger presentation of multi-asset values directly.  Lens to make this uniform over <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/358" target="_blank" rel="noopener noreferrer">Protocol version change is not common to all versions anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/355" target="_blank" rel="noopener noreferrer">Delete <code>ByronAndAllegraEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/354" target="_blank" rel="noopener noreferrer">Replace <code>IsCardanoEra</code> and <code>IsShelleyBasedEra</code> contraints in GADT constructors with <code>Typeable</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/353" target="_blank" rel="noopener noreferrer">Modify foldBlocks to recurse on ledger events </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/352" target="_blank" rel="noopener noreferrer">Add generators for <code>EraBasedProtocolParametersUpdate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/351" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.30.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.6.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of Cardano Node 8.6.0-pre</a></li><li><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5525" target="_blank" rel="noopener noreferrer">cardano-node: use ouroboros-network-protocols-0.5.2</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-24-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-24T00:00:00.000Z" itemprop="datePublished">October 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-10-11 - 2023-10-24</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-CLI</p><ul><li>Disambiguate cardano-cli stake credential related flags on treasury withdrawal governance actions making it easy to identify which is used for the deposit refund and which for the destination of the funds from the treasury if the action is ratified.</li><li><code>stake-address-info</code> now shows deposits balance.</li><li>Added <code>conway governance action view</code> to allow to inspect governance action files before submitting them on a transaction.</li><li><code>build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></li></ul><p>CARDANO-API</p><ul><li>Support DRep extended keys</li><li>Support Plutus V1 in Conway</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/394" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/393" target="_blank" rel="noopener noreferrer">Simplify <code>toTxOutInAnyEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/390" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/389" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/380" target="_blank" rel="noopener noreferrer">Check that poll answer index is not negative, to avoid a Prelude.!! error</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/379" target="_blank" rel="noopener noreferrer">drep registration-certificate: add a golden test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/378" target="_blank" rel="noopener noreferrer">Disambiguate treasury withdrawal flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/375" target="_blank" rel="noopener noreferrer">Make <code>stake-address-info</code> query also return deposit</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/374" target="_blank" rel="noopener noreferrer">Add <code>conway governance action view</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/372" target="_blank" rel="noopener noreferrer">Ch/clearer anchor flags</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/371" target="_blank" rel="noopener noreferrer">Command argument types for <code>transaction</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/370" target="_blank" rel="noopener noreferrer">Remove eras&#x27; constitution-hash</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/368" target="_blank" rel="noopener noreferrer">Shelley to Alonzo: add create-genesis-key-delegation-certificate to governance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/367" target="_blank" rel="noopener noreferrer">Enable reading of Conway <code>TxWitness</code>es</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/366" target="_blank" rel="noopener noreferrer">Make <code>governance action create-protocol-parameters-update</code> Conway onwards only</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/365" target="_blank" rel="noopener noreferrer"><code>transaction build-raw</code> support for <code>--vote-file</code> and <code>--proposal-file</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/364" target="_blank" rel="noopener noreferrer">Command argument types for governance key commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/363" target="_blank" rel="noopener noreferrer">Add test of voting using a cc hot key</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/338" target="_blank" rel="noopener noreferrer">Add Show instance for FoldBlocksError</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/336" target="_blank" rel="noopener noreferrer">Upgrade typed-protocols to 1.1.1</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/332" target="_blank" rel="noopener noreferrer">Improved validity range handling</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.28.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/330" target="_blank" rel="noopener noreferrer">Delete <code>AlonzoEraOnly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/329" target="_blank" rel="noopener noreferrer">New <code>shelleyToAlonzoEraToShelleyToBabbageEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/327" target="_blank" rel="noopener noreferrer">DRep extended key: add CastVerificationKeyRole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/326" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/325" target="_blank" rel="noopener noreferrer">Delete unnecessary calls to <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/324" target="_blank" rel="noopener noreferrer">New version <code>cardadno-api-8.27.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/323" target="_blank" rel="noopener noreferrer">Support Plutus V1 in Conway</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/322" target="_blank" rel="noopener noreferrer">Parameterize GovernanceAction on era </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/320" target="_blank" rel="noopener noreferrer">Support DRep extended keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/317" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.26.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/314" target="_blank" rel="noopener noreferrer">Haddock document the case functions, so that their behavior is easier to understand when calling them</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/313" target="_blank" rel="noopener noreferrer">Avoid <code>IsShelleyBasedEra</code> and <code>IsCardanoEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/312" target="_blank" rel="noopener noreferrer">New <code>MaryEraOnly</code> eon. Disjoint functions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5515" target="_blank" rel="noopener noreferrer">Factor out file creation for SPO</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5504" target="_blank" rel="noopener noreferrer">Tracer documentation generation enhacements </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-10-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-10T00:00:00.000Z" itemprop="datePublished">October 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-09-27 - 2023-10-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CARDANO-NODE</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">Pre-release of cardano-node 8.5.0-pre</a></li></ul><p>CARDANO-CLI</p><ul><li>Depracated governance query commands and moved all governance related queries to <code>cardano-cli &lt;era&gt; query</code></li><li>Drep registration certificates now allow to include an anchor</li><li>Integrated Drep retirement ceriticates</li><li>clean up of Drep registration certificates.</li></ul><p>CARDANO-API</p><ul><li>Add support for committee hot key witnesses</li><li>Require conway onwards for voting</li><li>Conway drep registration: expose ledger anchor parameter</li><li>Add certs to txbody of Conway transactions</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/347" target="_blank" rel="noopener noreferrer">Move <code>governance query</code> commands to <code>query</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/344" target="_blank" rel="noopener noreferrer">Rename create-new-committee into update-committee</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/341" target="_blank" rel="noopener noreferrer">New version cardano-cli-8.12.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/338" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/337" target="_blank" rel="noopener noreferrer">conway governance vote create: make it possible to use cc hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/331" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.11.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/330" target="_blank" rel="noopener noreferrer">Drep certification registration: add parameters for anchor</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/329" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.25.0.1</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/327" target="_blank" rel="noopener noreferrer">Move files that are not golden files into <code>input</code> directory</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/324" target="_blank" rel="noopener noreferrer">Update to cardano-api-8.24</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/323" target="_blank" rel="noopener noreferrer">Fix #311 - Add Cold Committee Key text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/322" target="_blank" rel="noopener noreferrer">create-poll, answer-poll, verify-poll: move to &#x27;babbage governance&#x27; block</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/320" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.23.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/319" target="_blank" rel="noopener noreferrer">Make <code>transaction view</code> emit JSON</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/318" target="_blank" rel="noopener noreferrer">Tidy up query command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/317" target="_blank" rel="noopener noreferrer">Use <code>caseShelleyToBabbageOrConwayEraOnwards</code> from <code>cardano-api</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/316" target="_blank" rel="noopener noreferrer">Add DRep Retirement Certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/310" target="_blank" rel="noopener noreferrer">Update to cardano api 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/309" target="_blank" rel="noopener noreferrer">drep registration-certificate: remove mix with SPO registration</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/307" target="_blank" rel="noopener noreferrer">Delete <code>EraCast</code> instance for <code>Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/306" target="_blank" rel="noopener noreferrer">Add certs to txbody of Conway transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/305" target="_blank" rel="noopener noreferrer">Move DRep reg certificate anchor types from cardano-cli to cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/304" target="_blank" rel="noopener noreferrer">Add BabbageEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/303" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.2.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/300" target="_blank" rel="noopener noreferrer">Add support for committee hot key witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/299" target="_blank" rel="noopener noreferrer">Reduce constraint usage with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/297" target="_blank" rel="noopener noreferrer">Delete <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/296" target="_blank" rel="noopener noreferrer">Simplify <code>DebugLedgerState</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/294" target="_blank" rel="noopener noreferrer">New version cardano-api-8.25.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/293" target="_blank" rel="noopener noreferrer">Require conway onwards for voting</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/292" target="_blank" rel="noopener noreferrer">Add witness committee cold key</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/291" target="_blank" rel="noopener noreferrer">Fix CHaP failure due to haddock issue</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/290" target="_blank" rel="noopener noreferrer">Amend cardano-api/pull/284 to use ReexposeLedger</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/289" target="_blank" rel="noopener noreferrer">Rename <code>AnyEraInEon</code> to <code>EraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/288" target="_blank" rel="noopener noreferrer">Release 8.24.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/287" target="_blank" rel="noopener noreferrer">Parameterize <code>AnyEraInEon</code>.  Add <code>AnyEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/286" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.23.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/284" target="_blank" rel="noopener noreferrer">conway drep registration: expose ledger anchor parameter</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/282" target="_blank" rel="noopener noreferrer">New <code>caseAlonzoOnlyOrBabbageEraOnwards</code> and <code>alonzoEraOnlyToAlonzoEraOnwards</code> functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/281" target="_blank" rel="noopener noreferrer">Rename eon functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/280" target="_blank" rel="noopener noreferrer">New <code>AnyEraInEon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/279" target="_blank" rel="noopener noreferrer">Replace <code>ValidityLowerBoundSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/278" target="_blank" rel="noopener noreferrer">Replace <code>TxExtraKeyWitnessesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/277" target="_blank" rel="noopener noreferrer">Explicit pattern match on all ledger certificates constructors. Remove redundant module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/276" target="_blank" rel="noopener noreferrer">Release 8.22.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/275" target="_blank" rel="noopener noreferrer">Replace <code>TxTotalAndReturnCollateralSupportedInEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5497" target="_blank" rel="noopener noreferrer">bump cardano-api to 8.25.2</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5491" target="_blank" rel="noopener noreferrer">Remove unused code in cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5490" target="_blank" rel="noopener noreferrer">Integrate upstream libraries for 8.5</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-26-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-26T00:00:00.000Z" itemprop="datePublished">September 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-09-13 - 2023-09-26</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">cardano-node 8.4.0-pre</a> release suitable for SanchoNet.</li><li>CLI continues making progress integrating governance features. During this sprint we integrated the <strong>info</strong> and <strong>new-committee</strong> governance actions.</li><li>The team continued moving to the ERA top-level commands structure. Removed <code>--conway-era</code> flag from the legacy commands making conway era commands only accessible via <code>cardano-cli conway</code>.</li><li><code>stake-pool</code> command is now under the ERA top level structure.</li><li>API continues integration with governance features, it is worth to higlight that now <em>ProposeNewCommitee</em> uses the right key type (cc-cold)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/302" target="_blank" rel="noopener noreferrer">Disambiguate 2-n flags in governance new-committee action</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/298" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/295" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.20.2</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/292" target="_blank" rel="noopener noreferrer">cardano-cli: add governance create-info command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/287" target="_blank" rel="noopener noreferrer">Release 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/286" target="_blank" rel="noopener noreferrer">Export <code>Cardano.CLI.Legacy.Options.pLegacyCardanoEra</code> for cardano-testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/284" target="_blank" rel="noopener noreferrer">Rename <code>SomeWitness</code> to <code>SomeSigningWitness</code>.  Rename constructors to avoid name conflicts.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/283" target="_blank" rel="noopener noreferrer">Update cardano-api to 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/282" target="_blank" rel="noopener noreferrer">Remove unused governance-related code</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/281" target="_blank" rel="noopener noreferrer">Fix typo in stake-pool help text and clarify drep queries arguments</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/280" target="_blank" rel="noopener noreferrer">Remove redundant conversions in JSON friendly instances </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/279" target="_blank" rel="noopener noreferrer">Regularise era based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/277" target="_blank" rel="noopener noreferrer">Simplify era handling</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/276" target="_blank" rel="noopener noreferrer">Remove <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/275" target="_blank" rel="noopener noreferrer">Era-based <code>stake-pool</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/274" target="_blank" rel="noopener noreferrer">Fix git revision in <code>version</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/273" target="_blank" rel="noopener noreferrer">cardano-cli-8.8.0.0</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/265" target="_blank" rel="noopener noreferrer">Organise eon re-exports. Export <code>MaryEraOnwards</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/264" target="_blank" rel="noopener noreferrer">cardano-api-internal: ProposeNewCommittee: StakeKey -&gt; CommitteeColdKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/262" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.21.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/256" target="_blank" rel="noopener noreferrer">Delete unused eon constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/255" target="_blank" rel="noopener noreferrer">Export ByronEraOnly</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/254" target="_blank" rel="noopener noreferrer">Replace only <code>AdaSupportedInEra</code> and <code>MultiAssetSupportedInEra</code> with eons</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/250" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.20.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/249" target="_blank" rel="noopener noreferrer">Add JSON instance for Hash GenesisKey </a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/248" target="_blank" rel="noopener noreferrer">Support more ledger constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/247" target="_blank" rel="noopener noreferrer">Rename <code>FeatureInEra</code> to <code>Eon</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/246" target="_blank" rel="noopener noreferrer">Release 8.20.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/245" target="_blank" rel="noopener noreferrer">Fix DRep Stake and DRep Stake queries for empty lists</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/244" target="_blank" rel="noopener noreferrer">Delete <code>TxFeesExplicitInEra</code> and <code>TxFeesImplicitInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/243" target="_blank" rel="noopener noreferrer">Fix typos in some deserialization error messages</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/240" target="_blank" rel="noopener noreferrer">Fix querying for dreps in <code>transaction build</code> in eras before conway</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5480" target="_blank" rel="noopener noreferrer">Trace Configuration Trace Message Enhancement</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5466" target="_blank" rel="noopener noreferrer">cardano-node: reduce orphan instances</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5474" target="_blank" rel="noopener noreferrer">Bump versions for cardano-node-8.4.0-pre</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5471" target="_blank" rel="noopener noreferrer">Update to cardano-cli 8.9.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">Updated dependencies for cardano-node-8.4.0-pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-12-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-12T00:00:00.000Z" itemprop="datePublished">September 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-30 - 2023-09-12</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Release of <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" target="_blank" rel="noopener noreferrer">Cardano-node 8.3.0-pre</a> for SanchoNet. Adds DReps to the Conway governance rules. Allows registration of DReps, delegation to DReps and voting on constitution action with DReps and SPOs.
+This release completes <a href="https://sancho.network/get-started#sanchonet-feature-rollout" target="_blank" rel="noopener noreferrer">phase 2 of SanchoNet feature roll out plan</a></p><p>CLI continues on its migration to a era-based top-level commands. This sprint we moved <code>text-view</code>, <code>key</code>, <code>query</code>, <code>genesis</code>, <code>node</code>, <code>stake-address</code>, <code>transaction</code> and <code>address</code> into this new command structure. This is the initial migration, there is still some clean-up to do on future sprints.</p><p>We are moving the <code>drep delegation-certificate</code> to the stake-address command so delegating to a drep is done via  <code>stake-addres vote-delegation-certificate</code>. Along the same lines, we are renaming
+<code>stake-address delegation-certificate</code> (delagating to a stake pool) to <code>stake-address stake-delegation-certificate</code> to distinguish between stake delegation to a pool and votes delegation to a drep. On top
+of that, there is a new type of delegation certificate to delegate (stake) to a stake pool and (votes) to a drep simultaneosuly <code>stake-address stake-and-vote-delegation-certificate</code>. Note that change is not included on  8.3 but will come on 8.4.
+Removing <code>--conway-era</code> flag from all the <code>transaction</code> sub-commands.</p><p>Update description fields in delegation certificates from <code>Stake Address Delegation Certificate</code> to respectively (Conway onwards):</p><ul><li><code>Stake Delegation Certificate</code></li><li><code>Vote Delegation Certificate</code></li><li><code>Stake and Vote Delegation Certificate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/261" target="_blank" rel="noopener noreferrer">New <code>stake-address vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/257" target="_blank" rel="noopener noreferrer">New <code>stake-address stake-and-vote-delegation-certificate</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/260" target="_blank" rel="noopener noreferrer">Change <code>TreasuryWithdrawalCmd</code> to a record</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/256" target="_blank" rel="noopener noreferrer">Simplify <code>stake-address stake-delegation-certificate</code> command across eras</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/254" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix and add <code>Cmd</code> suffix</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/250" target="_blank" rel="noopener noreferrer">#221 Update description fields on delegation certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/249" target="_blank" rel="noopener noreferrer">Update error message for eras mismatch between node and cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/248" target="_blank" rel="noopener noreferrer">Era based <code>address</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/246" target="_blank" rel="noopener noreferrer">Consistent naming for <code>stake-pool</code> command related types, functions and modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/245" target="_blank" rel="noopener noreferrer">Disable <code>redundant-constraints</code> warning only on <code>ghc-8.10.7</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/244" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from era-based commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/243" target="_blank" rel="noopener noreferrer">Rename <code>delegation-certificate</code> to <code>stake-delegation-certificate</code> only in era-based command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/242" target="_blank" rel="noopener noreferrer">Move <code>node</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/241" target="_blank" rel="noopener noreferrer">Era-based <code>stake-address</code> command group</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/240" target="_blank" rel="noopener noreferrer">Remove duplicate instances and add new <code>FeatureInEra ShelleyBasedEra</code> instance</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/239" target="_blank" rel="noopener noreferrer">Remove <code>EraBased</code> prefix from errors</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/238" target="_blank" rel="noopener noreferrer">Move <code>text-view</code> run commands implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/237" target="_blank" rel="noopener noreferrer">Move <code>key</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/236" target="_blank" rel="noopener noreferrer">Move <code>query</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/235" target="_blank" rel="noopener noreferrer">Move <code>genesis</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/234" target="_blank" rel="noopener noreferrer">Move <code>pool</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/233" target="_blank" rel="noopener noreferrer">Move <code>stake-address</code> run commands implementation into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/232" target="_blank" rel="noopener noreferrer">Move <code>address</code> run command implementation into era-based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/231" target="_blank" rel="noopener noreferrer">Delete legacy <code>conway governance</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/230" target="_blank" rel="noopener noreferrer">Era sensitive transaction run commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/229" target="_blank" rel="noopener noreferrer">Move transaction command code into era based</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/228" target="_blank" rel="noopener noreferrer">Fix query <code>key-period-info</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/227" target="_blank" rel="noopener noreferrer">New <code>hprop_golden_shelleyStakeAddressRegistrationCertificateWithBuildRaw</code> test</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/225" target="_blank" rel="noopener noreferrer">Prefix complex delegation certificate option</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/233" target="_blank" rel="noopener noreferrer">Fix test constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/231" target="_blank" rel="noopener noreferrer">New <code>caseShelleyToBabbageAndConwayEraOnwards</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/230" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/228" target="_blank" rel="noopener noreferrer">Release 8.19.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/226" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instances for <code>CardanoEra</code> and <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/225" target="_blank" rel="noopener noreferrer">New <code>mapSomeAddressVerification</code> key function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/224" target="_blank" rel="noopener noreferrer">Fix type signature of <code>queryGenesisParameters</code> so that it can be queried in any era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/222" target="_blank" rel="noopener noreferrer">Release 8.18.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/221" target="_blank" rel="noopener noreferrer">Fix exception when executing drep queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.3.0-pre" 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recent posts navigation"><div class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-29-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-29T00:00:00.000Z" itemprop="datePublished">August 29, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-16 - 2023-08-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>CLI is making progress towards phases 3 and 4 of SanchoNet.</p><ul><li><p>Ability to create info, no-confidence and new committee governance actions.</p></li><li><p>Voting as DREP is possible now on the CLI</p></li><li><p>API is now using Ledger&#x27;s PParams and VotingProcedures</p></li><li><p>Expose following queries from consensus:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">- GetGovState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetDRepStakeDistr</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetCommitteeState</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">- GetConstitution</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/179" target="_blank" rel="noopener noreferrer">Add goverance info action creation to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/176" target="_blank" rel="noopener noreferrer">Add create-no-confidence command to era based cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/175" target="_blank" rel="noopener noreferrer">Add create-new-committee command to era based cli</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/204" target="_blank" rel="noopener noreferrer">Enable <code>--drep-script-hash</code> option</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/211" target="_blank" rel="noopener noreferrer">Remove <code>experimental</code> subcommand</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/210" target="_blank" rel="noopener noreferrer">Upgrade to <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/194" target="_blank" rel="noopener noreferrer">New <code>governance drep id</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/189" target="_blank" rel="noopener noreferrer">Add <code>governance query</code> commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/187" target="_blank" rel="noopener noreferrer">Add <code>--verification-key</code> option to <code>committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/203" target="_blank" rel="noopener noreferrer">Read and write <code>VotingProcedures</code> files instead of <code>VotingEntry</code> files</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/201" target="_blank" rel="noopener noreferrer">Release 8.6.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/195" target="_blank" rel="noopener noreferrer">Merge <code>LegacyClientCmdError</code> into <code>CmdError</code> </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/193" target="_blank" rel="noopener noreferrer">Add test for conway governance action create-constitution</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/192" target="_blank" rel="noopener noreferrer">Move legacy errors out of legacy command structure modules</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/191" target="_blank" rel="noopener noreferrer">Governance <code>drep</code> and <code>vote</code> command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/188" target="_blank" rel="noopener noreferrer">Move command errors from era-based to <code>CmdError</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/186" target="_blank" rel="noopener noreferrer">Move some error types</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/185" target="_blank" rel="noopener noreferrer">Delete unused module</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/183" target="_blank" rel="noopener noreferrer">Refactor: Use <code>maybeFeatureInEra</code> instead of <code>featureInEra</code> where possible</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/182" target="_blank" rel="noopener noreferrer">Remove all uses of <code>toS</code>, <code>purer</code>, <code>cborError</code> and <code>intercalate</code> from <code>Cardano.Prelude</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/180" target="_blank" rel="noopener noreferrer">Remove example era-based parsers we don&#x27;t need anymore</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/174" target="_blank" rel="noopener noreferrer">Bump CHaP index in preparation for  8.3.0 pre</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/216" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.17.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/214" target="_blank" rel="noopener noreferrer">Replace ProtocolParameters usage with ledger&#x27;s PParams</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/210" target="_blank" rel="noopener noreferrer">Use injective type families to improve type inference</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/209" target="_blank" rel="noopener noreferrer">Delete <code>TxVotes</code> and <code>VotingEntry</code> and use <code>VotingProcedures</code> instead</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/208" target="_blank" rel="noopener noreferrer">New functions <code>emptyVotingProcedures</code>, <code>singletonVotingProcedures</code> and <code>mergeVotingProcedures</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/207" target="_blank" rel="noopener noreferrer">New <code>makeStakeAddressAndDRepDelegationCertificate</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/206" target="_blank" rel="noopener noreferrer">Expose ledger lenses for governance types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/205" target="_blank" rel="noopener noreferrer">New version cardano-api-8.16.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/204" target="_blank" rel="noopener noreferrer">Add <code>VotingProcedures</code> type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/202" target="_blank" rel="noopener noreferrer">Release 8.16.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/200" target="_blank" rel="noopener noreferrer">Update createAnchor to use hashAnchorData</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/197" target="_blank" rel="noopener noreferrer">Release 8.15.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/196" target="_blank" rel="noopener noreferrer">Add consensus governance queries</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-15-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-15T00:00:00.000Z" itemprop="datePublished">August 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-08-02 - 2023-08-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>cardano-node 8.2.1 (pre-release) to SanchoNet</li><li>Continue moving CLI into era-based top level command structure</li><li>Wire-up DREP key generation,</li><li>Fix DREP deregistration certificates</li><li>Implement Constitutional Committee Key generation on the CLI</li><li>Introducing era-based protocol parameters on the API</li><li>Removing depracated functions and types on the API</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/169" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.13.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/164" target="_blank" rel="noopener noreferrer">Reenable golden tests</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/163" target="_blank" rel="noopener noreferrer">#128 DRep key generation</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/160" target="_blank" rel="noopener noreferrer">Bump index states</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/159" target="_blank" rel="noopener noreferrer">Fix deregistration-certificate: generate deregistration instead of registration certs</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/158" target="_blank" rel="noopener noreferrer">Structuring legacy code so that era-based code does not depend on it</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/151" target="_blank" rel="noopener noreferrer">Plural for command groups</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/144" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee key-hash</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/142" target="_blank" rel="noopener noreferrer">Wire up constitution creation in the new era based cli commands</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/140" target="_blank" rel="noopener noreferrer">cardano-cli 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/137" target="_blank" rel="noopener noreferrer">Wire up remaining DReps</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/136" target="_blank" rel="noopener noreferrer">Implement <code>conway governance committee hot-key-gen</code> command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/189" target="_blank" rel="noopener noreferrer">Release cardano-api 8.13.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/187" target="_blank" rel="noopener noreferrer">Fix build</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/185" target="_blank" rel="noopener noreferrer">cardano-api 8.13.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/181" target="_blank" rel="noopener noreferrer">Modify <code>queryGenesisParameters</code> so that its type advertises it only returns genesis parameters for the Shelley era</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/180" target="_blank" rel="noopener noreferrer">Introduce EraBasedProtocolParametersUpdate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/173" target="_blank" rel="noopener noreferrer">Delete deprecated functions and types</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/171" target="_blank" rel="noopener noreferrer">Simplify code with new constraints functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/170" target="_blank" rel="noopener noreferrer">Fix <code>EraCast Certificate</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/168" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.12.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/167" target="_blank" rel="noopener noreferrer">Fix committee hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/164" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.11.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/163" target="_blank" rel="noopener noreferrer">Fix typo Constitional -&gt; Constitutional</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5430" target="_blank" rel="noopener noreferrer">cardano-git-rev: New version for CHaP</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5423" target="_blank" rel="noopener noreferrer">cardano-node 8.2.1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/cardano-node/pull/5427" target="_blank" rel="noopener noreferrer">Fix broken links in docs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/127" target="_blank" rel="noopener noreferrer">Convert to use <code>tasty-discover</code></a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-01-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-01T00:00:00.000Z" itemprop="datePublished">August 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-07-19 - 2023-08-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release of Node 8.2.0<ul><li>Updates to the ledger packages extend progress on the Conway ledger era to support new governance features via CIP-1694.</li><li>This release is phase 1 of the SanchoNet roll out</li><li>Allows SPOs to vote on changes to the on-chain constitution.</li><li>Ability to start the node in block production mode with no secrets loaded using the --non-producing-node flag.</li><li>Updates to the networking packages prepare the road for peer sharing.</li></ul></li><li>cardano-cli and cardano-api continue to integrate Conway era features</li><li>Continue refactoring of cardano-testnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/116" target="_blank" rel="noopener noreferrer">Use AnyShelleyToBabbageEra from cardano-api instead</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/115" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/113" target="_blank" rel="noopener noreferrer">Add rendering for <code>ConwayCertificate</code> in <code>Cardano.Cli.Json.Friendly</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/111" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/110" target="_blank" rel="noopener noreferrer">Add DRep registration certificate command</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/109" target="_blank" rel="noopener noreferrer">Add options to delegate voting stake </a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/107" target="_blank" rel="noopener noreferrer">Share MIR certificates code between era-based and legacy CLI parsers</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/106" target="_blank" rel="noopener noreferrer">Release cardano-cli 8.4.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/103" target="_blank" rel="noopener noreferrer">Update to<code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/100" target="_blank" rel="noopener noreferrer">Change directory structure from Options/.. to EraBased/..</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/98" target="_blank" rel="noopener noreferrer">Era-sensitive command structure</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/90" target="_blank" rel="noopener noreferrer">#86 Set default era to Babbage in stake-address, stake-pool and governance commmands</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/155" target="_blank" rel="noopener noreferrer">Deprecate <code>shelleyCertificateConstraints</code> and <code>conwayCertificateConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/154" target="_blank" rel="noopener noreferrer">Deprecate <code>TxVotesSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/152" target="_blank" rel="noopener noreferrer">Add SerialiseAsBech32 instances for committee cold and hot keys</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/151" target="_blank" rel="noopener noreferrer">Deprecate some constraint functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/150" target="_blank" rel="noopener noreferrer">Deprecate <code>TxGovernanceActionSupportedInEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/149" target="_blank" rel="noopener noreferrer">More <code>shelleyBasedEraConstraint</code> constraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/148" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/147" target="_blank" rel="noopener noreferrer">Expose shelleyCertificateConstraints and conwayCertificateConstraints</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/146" target="_blank" rel="noopener noreferrer">Remove unnecessary function <code>getShelleyEraTxBodyConstraint</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/143" target="_blank" rel="noopener noreferrer">Provide additional constraints in <code>shelleyBasedEraConstraints</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/142" target="_blank" rel="noopener noreferrer">Update changelogs for <code>cardano-api-8.10.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/141" target="_blank" rel="noopener noreferrer">handleFileForWritingWithOwnerPermissionImpl: Fix permisions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/138" target="_blank" rel="noopener noreferrer">Update DRepKey with correct <code>Voting</code> keyrole</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/137" target="_blank" rel="noopener noreferrer">Support more constraints for Conway witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/135" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.10.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/134" target="_blank" rel="noopener noreferrer">Expose toShelleyPoolParams for conway integration</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/131" target="_blank" rel="noopener noreferrer"><code>FeatureInEra</code> instance for <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/130" target="_blank" rel="noopener noreferrer">Expose more functionality from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/128" target="_blank" rel="noopener noreferrer">Improved feature ergonomics</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/127" target="_blank" rel="noopener noreferrer">Rename <code>AtMostBabbageEra</code> to <code>ShelleyToBabbageEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5412" target="_blank" rel="noopener noreferrer">Fix stubbed LogFormatting instances</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5401" target="_blank" rel="noopener noreferrer">input-output-hk/cardano-cli#85 Fix node crashing in babbage</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5411" target="_blank" rel="noopener noreferrer">8.2.0 version bumps</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5404" target="_blank" rel="noopener noreferrer">Fix missing <code>ToObject</code> tracing instances.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5400" target="_blank" rel="noopener noreferrer">Fix plutus script costing in cardano-testnet</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">Bump network packages version</a><ul><li><a href="https://github.com/input-output-hk/cardano-node/blob/05c0392b4722d7fe2f82db1854b28de4f28a917b/doc/getting-started/understanding-config-files.md?plain=1#L84C1-L97C42" target="_blank" rel="noopener noreferrer">WarmValency</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-18-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-18T00:00:00.000Z" itemprop="datePublished">July 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-07-05 - 2023-07-18</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate Conway certificates in cardano-api</li><li>Prepare cardano-cli and cardano-api for cardano-node 8.1.2</li><li>Tagged cardano-cli 8.3.0.0<ul><li>Query for the hash of the constitution (Conway)</li><li>Ability to create votes and governance actions</li></ul></li><li>Tagged cardano-cli 8.3.1.0<ul><li>Make it build with ghc-9.6</li></ul></li><li>Upgrade to optparse-applicative-fork-0.18.1.0 for parsing command line options</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/74" target="_blank" rel="noopener noreferrer">Upgrade to <code>optparse-applicative-fork-0.18.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/72" target="_blank" rel="noopener noreferrer">Integrate cardano-api changes for fixed Show and Eq instances for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/68" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.1.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/67" target="_blank" rel="noopener noreferrer">Add alonzo era to <code>Parser AnyShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/66" target="_blank" rel="noopener noreferrer">Use <code>sbe</code> variable name for the type is <code>ShelleyBasedEra</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/65" target="_blank" rel="noopener noreferrer">New version <code>cardano-cli-8.3.0.0</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/123" target="_blank" rel="noopener noreferrer">Fix ghc version CPP</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/122" target="_blank" rel="noopener noreferrer">Add a HasTypeProxy constraint to getVerificationKey</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/119" target="_blank" rel="noopener noreferrer">Incorporate remaining ledger certificates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/117" target="_blank" rel="noopener noreferrer">Release cardano-api 8.8.1.0, cardano-api-gen 8.1.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/115" target="_blank" rel="noopener noreferrer">Fix Eq, Show for Proposal type</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/112" target="_blank" rel="noopener noreferrer">Wire up remaining governance actions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/108" target="_blank" rel="noopener noreferrer">Export <code>withShelleyBasedEraConstraintsForLedger</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/106" target="_blank" rel="noopener noreferrer">Remove unnecessary constraint</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/104" target="_blank" rel="noopener noreferrer">Make it build with ghc-9.6</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/103" target="_blank" rel="noopener noreferrer">New <code>shelleyBasedEraConstraints</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/102" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.8.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/101" target="_blank" rel="noopener noreferrer">Add CastVerificationKeyRole StakePoolKey StakeKey instance</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/99" target="_blank" rel="noopener noreferrer">Update ledger and consensus</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/98" target="_blank" rel="noopener noreferrer">Rename <code>era</code> to <code>sbe</code> when type is <code>ShelleyBasedEra</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5391" target="_blank" rel="noopener noreferrer">Fix Shutdown test for new exit codes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5387" target="_blank" rel="noopener noreferrer">Fix markdown links</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/69" target="_blank" rel="noopener noreferrer">Apply <code>stylish-haskell</code> to project</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-04-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-06-21 - 2023-07-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Started integration of conway era into the cardano-api,</li><li>Pre-release of cardano-cli 8.2.1 which enables creating goveranance &quot;Update constitution&quot; governance actionsas well as voting. Both only as SPO. DREP and CC will come in future releases.</li><li>Cardano-cli is moving to a top-level era command structure (i.e. cardano-cli conway, cardano-cli babbage, etc to accomodate for different fucntionalities available in diferent eras. In particular between Babbage and Conway governance-related functionalities.</li><li>Continue refactoring cardano-testnet</li><li>CI and docs house keeping on the new cardnao-cli and cardano-api repositories</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/60" target="_blank" rel="noopener noreferrer">Update to <code>cardano-api-8.7.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/44" target="_blank" rel="noopener noreferrer">Release 8.2.1</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/39" target="_blank" rel="noopener noreferrer">Use new function-based API instead of using query data types directly</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/94" target="_blank" rel="noopener noreferrer">Release cardano-api 8.7</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/92" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.6.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/90" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.2.0.0.1.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/88" target="_blank" rel="noopener noreferrer">Backport: Add era phantom type parameter to Certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/86" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/85" target="_blank" rel="noopener noreferrer">Voting procedure and proposal procedure updates</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/84" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> with <code>era</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/83" target="_blank" rel="noopener noreferrer">Parameterise <code>Certificate</code> type with phantom <code>era</code> type argument</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/77" target="_blank" rel="noopener noreferrer">Unified <code>ShelleyBasedEra</code> constraint summoning</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/70" target="_blank" rel="noopener noreferrer">Update CHaP index</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/41" target="_blank" rel="noopener noreferrer">CIP-1694 API - Part 1</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node top level error handler</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5364" target="_blank" rel="noopener noreferrer">Report payment address and UTxOs in testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5362" target="_blank" rel="noopener noreferrer">New Conway <code>stake-snapshot</code> tests</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/79" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/33" target="_blank" rel="noopener noreferrer">Release workflow description</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">Turn on some traces by default</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/75" target="_blank" rel="noopener noreferrer">Add PR changelog check</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/71" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/62" target="_blank" rel="noopener noreferrer">Enable CI on PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/53" target="_blank" rel="noopener noreferrer">Remove merge_group trigger from changelog check CI</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/46" target="_blank" rel="noopener noreferrer">Add PR changelog check. Add core-tech group to GHA description codeowners.</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/41" target="_blank" rel="noopener noreferrer">Fix stylish haskell in github action workflow</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/40" target="_blank" rel="noopener noreferrer">Enable CI in PRs from forks</a></li><li><a href="https://github.com/input-output-hk/cardano-cli/pull/48" target="_blank" rel="noopener noreferrer">Add contributing guide</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/cli-api"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/cli-api/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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recent posts navigation"><div class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-07-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-07T00:00:00.000Z" itemprop="datePublished">June 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/CarlosLopezDeLara.png" alt="Carlos LopezDeLara"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/CarlosLopezDeLara" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Carlos LopezDeLara</span></a></div><small class="avatar__subtitle" itemprop="description">Node Product Owner</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-06-07 - 2023-06-20</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Completed cardano-cli migration to input-output-hk/cardano-cli</li><li>cardano-cli ping now uses cardano-ping-0.2.0.5</li><li>New queries on API:<ul><li><code>queryCurrentEpochState</code></li><li><code>queryDebugLedgerState</code></li><li><code>queryGenesisParameters</code></li><li><code>queryPoolDistribution</code></li><li><code>queryPoolState</code></li><li><code>queryProtocolParameters</code></li><li><code>queryProtocolParametersUpdate</code></li><li><code>queryProtocolState</code></li><li><code>queryStakeAddresses</code></li><li><code>queryStakeDistribution</code></li><li><code>queryStakePoolParameters</code></li><li><code>queryStakeSnapshot</code></li></ul></li><li>Deprecate:<ul><li><code>queryPparams</code></li></ul></li><li>Export query API as functions<ul><li><code>genFeatureValueInEra</code></li><li><code>featureInShelleyBasedEra</code></li><li><code>isFeatureValue</code></li><li><code>valueOrDefault</code></li><li><code>asFeatureValue</code></li><li><code>asFeatureValueInShelleyBasedEra</code></li><li><code>queryEpoch</code></li><li><code>requireShelleyBasedEra</code></li></ul></li><li>Restructure cardano-testnet (WIP)</li></ul><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">Updated cardano-cli to use <code>cardano-ping-0.2.0.5</code>.</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5316" target="_blank" rel="noopener noreferrer">Use <code>cardano-cli</code> from CHaP</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">Updated cardano-cli ping command</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">Use cardano-ping-0.2.0.5</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/28" target="_blank" rel="noopener noreferrer">Deprecate <code>--protocol-params-file</code> option of the <code>transaction build</code> command more thoroughly</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/25" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/24" target="_blank" rel="noopener noreferrer">Use simplified <code>queryStateForBalancedTx</code></a></p></li><li><p><a href="https://github.com/input-output-hk/cardano-cli/pull/20" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/59" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.5.2.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/58" target="_blank" rel="noopener noreferrer">New <code>requireShelleyBasedEra</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/57" target="_blank" rel="noopener noreferrer">New version cardano-api-8.5.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/56" target="_blank" rel="noopener noreferrer">New <code>queryEpoch</code> function</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/55" target="_blank" rel="noopener noreferrer">New version 8.5.0.0</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/54" target="_blank" rel="noopener noreferrer">Error on <code>hlint</code> warnings in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/53" target="_blank" rel="noopener noreferrer">Additional query expression functions</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/52" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.4.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/49" target="_blank" rel="noopener noreferrer">New version <code>cardano-api-8.3.0.0</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/48" target="_blank" rel="noopener noreferrer">New <code>Cardano.Api.Query.Expr</code> module</a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/47" target="_blank" rel="noopener noreferrer">Simplify <code>queryStateForBalancedTx</code></a></li><li><a href="https://github.com/input-output-hk/cardano-api/pull/46" target="_blank" rel="noopener noreferrer">Revert to use <code>testProperty</code> now that it isn&#x27;t deprecated anymore</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.1.1" target="_blank" rel="noopener noreferrer">cardano-node 8.1.1 release</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5328" target="_blank" rel="noopener noreferrer">update network dependency and versions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5340" target="_blank" rel="noopener noreferrer">Add ability to retry tests with DISABLE_RETRIES=1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5339" target="_blank" rel="noopener noreferrer">Move golden files to proper location</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5336" target="_blank" rel="noopener noreferrer">Conway testnet</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5335" target="_blank" rel="noopener noreferrer">Don&#x27;t retry testnet when failed</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5321" target="_blank" rel="noopener noreferrer">Remove YAML filepath record from data Conf</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5315" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5311" target="_blank" rel="noopener noreferrer">Add <code>--conway-era</code> flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5309" target="_blank" rel="noopener noreferrer">Remove duplicate --testnet-magic flag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5307" target="_blank" rel="noopener noreferrer">Restructure cardano testnet </a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-cli/pull/18" target="_blank" rel="noopener noreferrer">Fix Windows CI issues</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-24-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-24T00:00:00.000Z" itemprop="datePublished">May 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-05-24 - 2023-06-06</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>The last sprint focused on removing cardano-cli and cardano-api from the cardano-node repository. We have successfully moved cardano-api to its own repository and will do the same for cardano-cli after the 8.1 node is released. </li><li>We provided assitance where needed in the release</li><li>An integration repository <a href="https://github.com/input-output-hk/fusion-flamingo" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fusion-flamingo</a> was created to enable my team to more easily work on cardano-cli and cardano-api</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5290" target="_blank" rel="noopener noreferrer">Update <code>cardano-cli</code> changelog</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5197" target="_blank" rel="noopener noreferrer">Propagate protocol parameters conversion errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5149" target="_blank" rel="noopener noreferrer">Command line option for parsing UTC time to slot number</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-api/pull/31" target="_blank" rel="noopener noreferrer">Switch to <code>tasty-discover</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/30" target="_blank" rel="noopener noreferrer">Move tests to standard locations</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/26" target="_blank" rel="noopener noreferrer">Make cardano-api:internal component public</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/24" target="_blank" rel="noopener noreferrer">update chaps index</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/18" target="_blank" rel="noopener noreferrer">Make <code>ErrorSpec</code> check for all constructors, move golden tests together</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/17" target="_blank" rel="noopener noreferrer">Expose toAlonzoCostModels</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/9" target="_blank" rel="noopener noreferrer">Make <code>ErrorsSpec</code>  use generated types and constructors names</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/32" target="_blank" rel="noopener noreferrer">Check changelog in tag script</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/34" target="_blank" rel="noopener noreferrer">Use tag script from <code>cardano-dev</code> repository instead</a> </li><li><a href="https://github.com/input-output-hk/cardano-api/pull/38" target="_blank" rel="noopener noreferrer">Use .x suffix for release branches</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5291" target="_blank" rel="noopener noreferrer">Use <code>cryptoInit</code> instead of <code>sodiumInit</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5284" target="_blank" rel="noopener noreferrer">Move configuration tests to <code>cardano-node</code> tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5243" target="_blank" rel="noopener noreferrer">update chaps &amp; integration</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5240" target="_blank" rel="noopener noreferrer">#5222 Remove <code>ApplicationName</code> and <code>ApplicationVersion</code> config parameters</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-05-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-05-05 - 2023-05-23</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Golden tests for cardano-cli command help output were added.</li><li>Documentation was updated with new libsodium installation instructions.</li><li>There were several updates for the cardano-cli:<ul><li>Deletion of the deprecated shelley command group.</li><li>Addition of golden tests for CLI help.</li><li>An improvement to avoid bare IO in tests, allowing better error reporting in failed tests.</li><li>Generation of UTCTime test values without leap seconds (avoids erroneous test failures)</li><li>Support for signing transactions with GenesisDelegateSigningKey_ed25519_bip32.</li></ul></li><li>The cardano-api underwent multiple refinements:<ul><li>Implementing deposit handling when balancing transactions (necessary for Conway)</li><li>Cleaning up socket file path code.</li></ul></li><li>Several changes were made to the cardano-testnet:<ul><li>Adding golden tests for cardano-testnet help.</li><li>Removing all hardcoded yaml files in cardano-testnet</li><li>Improving cardano-testnet help output.</li><li>Parameterizing default yaml configuration value, allowing for easier hardforking to the era of choice.</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5181" target="_blank" rel="noopener noreferrer">Update libsodium installation instructions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5264" target="_blank" rel="noopener noreferrer">Delete deprecated <code>shelley</code> command group</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5206" target="_blank" rel="noopener noreferrer">Add golden tests for CLI help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5201" target="_blank" rel="noopener noreferrer">Avoid bare IO in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5200" target="_blank" rel="noopener noreferrer">Split <code>cardano-cli</code> test files into separate directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5198" target="_blank" rel="noopener noreferrer">Make UTCTime test generator generate values without leap seconds</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5189" target="_blank" rel="noopener noreferrer">Add support with signing transactions with <code>GenesisDelegateSigningKey_ed25519_bip32</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5184" target="_blank" rel="noopener noreferrer">Rename --signed-tx-file argument to --tx-file argument in verify-poll command</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5120" target="_blank" rel="noopener noreferrer">Simplify socket path code</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5221" target="_blank" rel="noopener noreferrer">refactor: make renderScriptWitnessIndex output more explicit</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5218" target="_blank" rel="noopener noreferrer">Implement deposit handling when balancing transactions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5217" target="_blank" rel="noopener noreferrer">Replace remaining <code>FilePath</code> use in <code>cardano-api</code></a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5215" target="_blank" rel="noopener noreferrer">Cleanup socket file path code</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5207" target="_blank" rel="noopener noreferrer">Delete <code>readEnvSocketPath</code> function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5194" target="_blank" rel="noopener noreferrer">IO functions for reading. Remove PoolMetadataFile type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5191" target="_blank" rel="noopener noreferrer">Expose config reader</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5188" target="_blank" rel="noopener noreferrer">Golden tests for <code>cardano-api</code> errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5175" target="_blank" rel="noopener noreferrer">Fix <code>toEraInMode</code> for conway</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5168" target="_blank" rel="noopener noreferrer">Use machine readable output for ToJSON ScriptWitnessIndex</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5096" target="_blank" rel="noopener noreferrer">Expose LocalTxSubmissionClient data constructor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5047" target="_blank" rel="noopener noreferrer">Use cardano-api from separate repository</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4684" target="_blank" rel="noopener noreferrer">[cardano-api] Export fromConsensusPointHF</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5022" target="_blank" rel="noopener noreferrer">Provide orphan <code>ToJSON</code> instances for <code>HardForkNodeToClientVersion</code> and <code>HardForkNodeToNodeVersion</code></a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5254" target="_blank" rel="noopener noreferrer">Add golden test for <code>cardano-testnet</code> help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5242" target="_blank" rel="noopener noreferrer">Remove all hardcoded yaml files from cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5234" target="_blank" rel="noopener noreferrer">Fix cardano-testnet help</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5211" target="_blank" rel="noopener noreferrer">Parameterize default yaml configuration value in cardano-testnet</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5165" target="_blank" rel="noopener noreferrer">Freeze callstack in integration and integrationRetryWorkspace functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5128" target="_blank" rel="noopener noreferrer">Create defaultYamlValue for cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-20-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-04-20 - 2023-05-04</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Various fixes and improvements</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5136" target="_blank" rel="noopener noreferrer">Modify golden test functions to automatically create parent directories</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5132" target="_blank" rel="noopener noreferrer">SPO on-chain poll commands adjustments</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5119" target="_blank" rel="noopener noreferrer">New environment variable CARDANO_NODE_NETWORK_ID</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5172" target="_blank" rel="noopener noreferrer"><code>--out-file</code> option for governance commands</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5130" target="_blank" rel="noopener noreferrer">UTC Time to slots conversion function</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5157" target="_blank" rel="noopener noreferrer">Update CHaP to get latest ledger with performance fix</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4854" target="_blank" rel="noopener noreferrer">Integration with Peer Sharing</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-04-05 - 2023-04-19</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Introduce new governance commands create, answer and verify. This allows us to have onchain polls.</li><li>Begin making changes in cardano-api to accomodate for CIP-1694</li><li>Rename <code>TestEnableDevelopmentHardForkEras</code> to <code>ExperimentalHardForksEnabled</code> and <code>TestEnableDevelopmentNetworkProtocols</code> to <code>ExperimentalProtocolsEnabled</code></li><li>Various bug fixes and improvements </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5112" target="_blank" rel="noopener noreferrer">Add new interim governance commands: {create, answer, verify}-poll</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5061" target="_blank" rel="noopener noreferrer">Remove --stake-address option from stake-address build</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5059" target="_blank" rel="noopener noreferrer">Frozen callstack for checkTextEnvelopeFormat function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5053" target="_blank" rel="noopener noreferrer">#5052 Remove reading protocol parameters from Shelley genesis file</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5046" target="_blank" rel="noopener noreferrer">Move parsers to reusable location</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --socket-path cli option</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5108" target="_blank" rel="noopener noreferrer">CIP-1694 make space for DRep certificates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5105" target="_blank" rel="noopener noreferrer">File type to track the content and direction of files</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5087" target="_blank" rel="noopener noreferrer">Fix import warning</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5086" target="_blank" rel="noopener noreferrer">Expose UsingRawBytes et al types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5085" target="_blank" rel="noopener noreferrer">Expose SerialiseAsRawBytesError in Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5072" target="_blank" rel="noopener noreferrer">Introduce new AnyShelleyBasedEra type and simplify CDDL tests.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5071" target="_blank" rel="noopener noreferrer">New genCardanoKeyWitness function</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5069" target="_blank" rel="noopener noreferrer">Replace roundtripCBOR with trippingCbor</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5064" target="_blank" rel="noopener noreferrer">Remove non-round-trippable value TxInsReferenceNone for babbage onwards in generator</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5063" target="_blank" rel="noopener noreferrer">Improve roundtrip functions to report annotations on callsite</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5057" target="_blank" rel="noopener noreferrer">Define Functor instance for FileError</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5049" target="_blank" rel="noopener noreferrer">Split serialisation from IO</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5115" target="_blank" rel="noopener noreferrer">Master build failure fixes</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5106" target="_blank" rel="noopener noreferrer">Allow renamed fields to exist if values the same</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5091" target="_blank" rel="noopener noreferrer">workbench: updates</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5084" target="_blank" rel="noopener noreferrer">Delete duplicate packages sort packages and imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras and TestEnableDevelopmentNetworkProtocols</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5110" target="_blank" rel="noopener noreferrer">Additional check for not-leader slots in LeadershipSchedule tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5099" target="_blank" rel="noopener noreferrer">Fix epochLength and securityParam to conform to the formula 10 * k / f</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5083" target="_blank" rel="noopener noreferrer">Ergonomic directory creation code in tests</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5036" target="_blank" rel="noopener noreferrer">Default Cardano.Testnet to NodeLoggingFormatAsJson</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5013" target="_blank" rel="noopener noreferrer">Integrate latest ledger dependencies</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/cli-api/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-03-22 - 2023-04-05</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Added new cardano-cli ping command which allows users to ping remote cardano-nodes.</li><li>The <code>transaction build</code> command now can automatically balance multiassets</li><li>New combinators for constructing transaction bodies. This allows us to construct transaction bodies in a composable manner.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5041" target="_blank" rel="noopener noreferrer">Remove unused error constructors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5040" target="_blank" rel="noopener noreferrer">Remove use of AcquireFailure type</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5038" target="_blank" rel="noopener noreferrer">Simplify implementation of executeQueryAnyMode</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5002" target="_blank" rel="noopener noreferrer">Script data serialisation</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4956" target="_blank" rel="noopener noreferrer">Guard against overflows in Shelley TxIns</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyContent and related types</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5011" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values.</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test.</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-03-08 - 2023-03-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes and some refactoring </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4958" target="_blank" rel="noopener noreferrer">Remove error calls in Cardano.CLI.Shelley.Run.Transaction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/5003" target="_blank" rel="noopener noreferrer">Add missing imports</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/5001" target="_blank" rel="noopener noreferrer">Add LedgerStateBabbage and LedgerStateConway pattern synonyms</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4967" target="_blank" rel="noopener noreferrer">Remove unnecessary functions</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4953" target="_blank" rel="noopener noreferrer">Remove duplicate scripts when building transaction body for Mary, Alonzo and Babbage</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4686" target="_blank" rel="noopener noreferrer">Add ToJSON/FromJSON instances for ChainPoint</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4683" target="_blank" rel="noopener noreferrer">Derive Eq instance for AcquiringFailure</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4682" target="_blank" rel="noopener noreferrer">Export <code>fromShelleyBasedScript</code> from Cardano.Api</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4344" target="_blank" rel="noopener noreferrer">Remove unnecessary validation of Data</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3775" target="_blank" rel="noopener noreferrer">Remove hint of &quot;string&quot; support for ScriptData</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4988" target="_blank" rel="noopener noreferrer">Conway hard forks on prot-ver 9</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4968" target="_blank" rel="noopener noreferrer">Reinstate -Werror for cardano-node and fix errors</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4921" target="_blank" rel="noopener noreferrer">Take all dependencies from Hackage or CHaP</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a> </li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">Get AcceptedConnectionsLimit from the configuration</a> </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4729" target="_blank" rel="noopener noreferrer">fix cardano-testnet Babbage genesis.json</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-22-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-02-22 - 2023-03-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General bug fixes </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4882" target="_blank" rel="noopener noreferrer">Fix some markdown links</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4881" target="_blank" rel="noopener noreferrer">Update changelog with PR4788 changes</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4901" target="_blank" rel="noopener noreferrer">Remove pattern Tx</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="documentation">Documentation<a class="hash-link" href="#documentation" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4949" target="_blank" rel="noopener noreferrer">Fix path to mkfiles.sh script in documentation</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4932" target="_blank" rel="noopener noreferrer">New build complete job</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4764" target="_blank" rel="noopener noreferrer">Update ouroboros-network</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4910" target="_blank" rel="noopener noreferrer">New --node-socket-path cli option</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4909" target="_blank" rel="noopener noreferrer">Fix qKesKesKeyExpiry to not always be null</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4880" target="_blank" rel="noopener noreferrer">Detect invalid counter and certificate</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4823" target="_blank" rel="noopener noreferrer">Straight line code for tx commands</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">New cardano-cli ping command.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4655" target="_blank" rel="noopener noreferrer">Move cardano-ping from ouroboros-network to cardano-node project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4941" target="_blank" rel="noopener noreferrer">Combinators for TxBodyConŻtent and related types</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4903" target="_blank" rel="noopener noreferrer">Reduce number of calls to toLedgerPParams</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4825" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops 2</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4911" target="_blank" rel="noopener noreferrer">Less verbose node-to-client and node-to-node version logging</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4879" target="_blank" rel="noopener noreferrer">Re-enable kes-period-info test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3783" target="_blank" rel="noopener noreferrer">Transaction debug script command</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-02-08 - 2023-02-21</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>More maintenance and resolving raised issues.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4889" target="_blank" rel="noopener noreferrer">Remove use of multiline literals</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4775" target="_blank" rel="noopener noreferrer">Markdown links CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Date ranges for copyright</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4894" target="_blank" rel="noopener noreferrer">Re-add support for decoding GenesisExtendedKey text envelope</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4885" target="_blank" rel="noopener noreferrer">Disallow empty cost model for create update proposal</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4815" target="_blank" rel="noopener noreferrer">Refactor code using onLeft and onNothing</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4876" target="_blank" rel="noopener noreferrer">Simplify SerialiseAsRawBytes type class</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-25-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2023-01-25 - 2023-02-07</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>General clean up (error message improvement) and focus on CI maintenance. Multiple pools now supported in the <code>cardano-cli query stake-snapshot</code> command. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4853" target="_blank" rel="noopener noreferrer">Fix how changed files are selected in stylish-haskell CI check</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4848" target="_blank" rel="noopener noreferrer">Remove hlint from nix required CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4838" target="_blank" rel="noopener noreferrer">Remove reconfigure-hlint.sh script</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4837" target="_blank" rel="noopener noreferrer">Fix hlint warnings</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4833" target="_blank" rel="noopener noreferrer">Implement ADR-2: Restructure modules for generators</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4803" target="_blank" rel="noopener noreferrer">Stylish Haskell in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4802" target="_blank" rel="noopener noreferrer">Revert skip doc in ci</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4800" target="_blank" rel="noopener noreferrer">Skip CI on doc only changes</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4792" target="_blank" rel="noopener noreferrer">Skip CI if only changes are documentation</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4776" target="_blank" rel="noopener noreferrer">Build all of cardano-node in CI</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4766" target="_blank" rel="noopener noreferrer">Check cabal files in CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4785" target="_blank" rel="noopener noreferrer">Straight line error handling</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4787" target="_blank" rel="noopener noreferrer">New NodeToClientVersionOf typeclass</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4832" target="_blank" rel="noopener noreferrer">Remove NoImplicitPrelude from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4809" target="_blank" rel="noopener noreferrer">Add ReaderT of NodeToClientVersion to LocalStateQueryExpr</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4808" target="_blank" rel="noopener noreferrer">Use hoistMaybe</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4788" target="_blank" rel="noopener noreferrer">Better error message for query utxo without oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4805" target="_blank" rel="noopener noreferrer">New query stake-snapshot integration test</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4671" target="_blank" rel="noopener noreferrer">Make leadership-schedule test less flaky</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-28-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-28T00:00:00.000Z" itemprop="datePublished">December 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-12-28 - 2023-01-10</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4762" target="_blank" rel="noopener noreferrer">Fix hedgehog-extras sha hash</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4759" target="_blank" rel="noopener noreferrer">Update hegehog-extras bounds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4751" target="_blank" rel="noopener noreferrer">GitHub token fix</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4743" target="_blank" rel="noopener noreferrer">Use setup-haskell action</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4738" target="_blank" rel="noopener noreferrer">Use Github Action to install libsecp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4714" target="_blank" rel="noopener noreferrer">Update index state and hedgehog-extras.</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4710" target="_blank" rel="noopener noreferrer">Cleaned cabal files</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4737" target="_blank" rel="noopener noreferrer">Add cache versioning</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4742" target="_blank" rel="noopener noreferrer">Delete obsolete scripts</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4746" target="_blank" rel="noopener noreferrer">Use SECURITY.md published in Cardano Engineering Handbook</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4749" target="_blank" rel="noopener noreferrer">Filter out duplicate collateral inputs in tx build cmds</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4754" target="_blank" rel="noopener noreferrer">Optimise query stake-snapshot command</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4761" target="_blank" rel="noopener noreferrer">Fix bug in hash computation in cardano-cli genesis create-cardano</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4777" target="_blank" rel="noopener noreferrer">Better error message for query utxo on oops</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4763" target="_blank" rel="noopener noreferrer">Remove simple script distinction</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4753" target="_blank" rel="noopener noreferrer">Export SubmitResult from Cardano.Api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4845" target="_blank" rel="noopener noreferrer">Use Haskell variables for passing values</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-12-14 - 2022-12-27</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4703" target="_blank" rel="noopener noreferrer">Move style guide to wiki</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-maintenance">CI &amp; project maintenance<a class="hash-link" href="#ci--project-maintenance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4734" target="_blank" rel="noopener noreferrer">Cache secp256k1</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4717" target="_blank" rel="noopener noreferrer">Use cabal-cache</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4699" target="_blank" rel="noopener noreferrer">build(deps): bump certifi from 2020.4.5.2 to 2022.12.7 in /doc/.sphinx</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4724" target="_blank" rel="noopener noreferrer">Update cabal.project</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="developer-experience">Developer experience<a class="hash-link" href="#developer-experience" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4125" target="_blank" rel="noopener noreferrer">Add aarch64-darwin to nix-shell</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4626" target="_blank" rel="noopener noreferrer">Improved error message for failed asset name decode</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4700" target="_blank" rel="noopener noreferrer">Remove cardano-cli address build-script</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4698" target="_blank" rel="noopener noreferrer">Move signing key reading to cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4712" target="_blank" rel="noopener noreferrer">Only run chairman test on latest era</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4679" target="_blank" rel="noopener noreferrer">Add fix and test for <code>foldBlocks</code></a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ci--project-mainteance">CI &amp; project mainteance<a class="hash-link" href="#ci--project-mainteance" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4755" target="_blank" rel="noopener noreferrer">Copyright updates</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4666" target="_blank" rel="noopener noreferrer">Read network ID from environment</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4647" target="_blank" rel="noopener noreferrer">CLI option to append additional signatures to a transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">Cardano ping</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet-1">cardano-testnet<a class="hash-link" href="#cardano-testnet-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4636" target="_blank" rel="noopener noreferrer">Cleanup exports of cardano-testnet</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-30 - 2022-12-13</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>PRs merged in this sprint focused on clean up and resolving existing issues. The majority of the time during this sprint was spent on the In Progress PRs which have dependencies on consensus. This has been since rectified i.e cardano-node dependencies have been bumped. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Append tx output in cli transaction build command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4592" target="_blank" rel="noopener noreferrer">Update Error messages in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4675" target="_blank" rel="noopener noreferrer">Replace Data.Map with Data.Map.Strict</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4708" target="_blank" rel="noopener noreferrer">Update Github actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4659" target="_blank" rel="noopener noreferrer">Render consistent plutus script failure output</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4713" target="_blank" rel="noopener noreferrer">Fully remove the cli intermediate TxBody format</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-16 - 2022-11-29</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="docs">docs<a class="hash-link" href="#docs" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4562" target="_blank" rel="noopener noreferrer">Add a native tokens tutorial and exercises</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4674" target="_blank" rel="noopener noreferrer">Update cardano-cli&#x27;s help</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4644" target="_blank" rel="noopener noreferrer">Remove error calls in renderShelleyTxCmdError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4639" target="_blank" rel="noopener noreferrer">Implement Cardano.Api.DeserialiseAnyOf</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4650" target="_blank" rel="noopener noreferrer">Fix windows CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4625" target="_blank" rel="noopener noreferrer">Handle pipes in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-11-02 - 2022-11-15</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Documentation improvments</li><li>Merged community contributions</li><li>Exposing types from cardano-api requested by the community/other teamss</li><li>Test output has been improved so diagnosing failures is now easier</li><li>Enabling stale bot to close stale issues and PRs (reduces clutter on the node repo)</li><li>Refactoring of cardano-testnet making it more useable as a library (ongoing)</li><li>Release 1.35.4 was merged &amp; released</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4567" target="_blank" rel="noopener noreferrer">Community contributions - doc fixes and spelling errors</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4587" target="_blank" rel="noopener noreferrer">Add Ord instance for AddressInEra</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4496" target="_blank" rel="noopener noreferrer">Export TxTotalAndReturnCollateralSupportedInEra from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4635" target="_blank" rel="noopener noreferrer">Expose TextEnvelopeCddl from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4628" target="_blank" rel="noopener noreferrer">Expose txScriptValidityToScriptValidity in Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4599" target="_blank" rel="noopener noreferrer">export RawBytesHexError</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/2883" target="_blank" rel="noopener noreferrer">Add Plutus minting script doc</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575/files" target="_blank" rel="noopener noreferrer">Improve test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4586" target="_blank" rel="noopener noreferrer">Enable stale bot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4557" target="_blank" rel="noopener noreferrer">Add link to troubleshooting page in the wiki</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4550" target="_blank" rel="noopener noreferrer">Use environment files in Github Actions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4544" target="_blank" rel="noopener noreferrer">Add single entrypoint for starting testnets</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4575" target="_blank" rel="noopener noreferrer">Improve cardano-testnet test output</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4595" target="_blank" rel="noopener noreferrer">Reorder module hierarchy</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>27 posts tagged with &quot;cli-api&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-19-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-19T00:00:00.000Z" itemprop="datePublished">October 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h1>2022-10-19 - 2022-11-01</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint saw the addition of the long awaited tx-mempool command that allows user to query the local node&#x27;s mempool for the following information:</p><ul><li>Ask the node about the current mempool&#x27;s capacity and sizes</li><li>Request the next transaction from the mempool&#x27;s current list</li><li>Query if a particular transaction exists in the mempool</li></ul><p>Outside of this feature the team has been focused on responding to user requests (e.g exposing functions, types and implementing instances they need) and refactoring cardano-cli/cardano-api. The metric <code>tx_submit_fail_count</code> has been added to the submit api so users can track how many transactions have failed. Other improvements have been made:</p><ul><li>Documentation improvments</li><li>Release 1.35.4 was merged &amp; released</li><li>Exported various types from cardano-api that were requested by community members</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4554" target="_blank" rel="noopener noreferrer">Export IsPlutusScriptLanguage from cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4546" target="_blank" rel="noopener noreferrer">Reduce exposed modules in cardano-api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4568" target="_blank" rel="noopener noreferrer">Add ToJSON and FromJSON instances for Address</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4565" target="_blank" rel="noopener noreferrer">Export TxIns type alias from Cardano.Api</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4534" target="_blank" rel="noopener noreferrer">Export more generators from cardano-api</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-submit-api">cardano-submit-api<a class="hash-link" href="#cardano-submit-api" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4566" target="_blank" rel="noopener noreferrer">Add tx_submit_fail_count metric</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4549" target="_blank" rel="noopener noreferrer">Upgrade to cabal-3.8.1.0</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4613" target="_blank" rel="noopener noreferrer">Update building-the-node-using-nix.md</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-testnet">cardano-testnet<a class="hash-link" href="#cardano-testnet" title="Direct link to heading">​</a></h3><ul><li>None</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h3><ul><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4279" target="_blank" rel="noopener noreferrer">Multiple pools support in query stake snapshot</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4250" target="_blank" rel="noopener noreferrer">Optimise query leadership schedule command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4179" target="_blank" rel="noopener noreferrer">Optimise query stake snapshot command</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/3819" target="_blank" rel="noopener noreferrer">Debug output for transaction submit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-04-node-cli-api">Node API &amp; CLI Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/Jimbo4350.png" alt="Jordan Millar"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/Jimbo4350" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jordan Millar</span></a></div><small class="avatar__subtitle" itemprop="description">Node Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-api-cli-update">Node-Api-Cli Update<a class="hash-link" href="#node-api-cli-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-04---2022-10-18">2022-10-04 - 2022-10-18<a class="hash-link" href="#2022-10-04---2022-10-18" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The majority of the team&#x27;s time was spent between getting <code>1.34.4</code> ready, addressing various feature requests/issues/bugs that have arisen and refactoring components in the api and cli. The current refactoring is aimed at the long term goal of empowering users to be able to easily build applications similar to <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4504" target="_blank" rel="noopener noreferrer">GHC 9.2.4 preparations</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli">cardano-cli<a class="hash-link" href="#cardano-cli" title="Direct link to heading">​</a></h4><ul><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4491" target="_blank" rel="noopener noreferrer">Separate IO from txBuild and txBuildRaw functions</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api">cardano-api<a class="hash-link" href="#cardano-api" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4501" target="_blank" rel="noopener noreferrer">TxWitness text envelope format does not roundtrip in Shelley era</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4526" target="_blank" rel="noopener noreferrer">Fix MacOS GHA CI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4508" target="_blank" rel="noopener noreferrer">Release 1.34.4</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-cli-1">cardano-cli<a class="hash-link" href="#cardano-cli-1" title="Direct link to heading">​</a></h4><ul><li>[BUGFIX]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4538" target="_blank" rel="noopener noreferrer">Fix query era mismatch bug in transaction build command</a></li><li>[Serenity]<!-- --> - <a href="https://github.com/input-output-hk/cardano-node/pull/4516" target="_blank" rel="noopener noreferrer">Condense Read and Validation modules in cardano-cli</a></li><li>[BUGFIX]<!-- -->- <a href="https://github.com/input-output-hk/cardano-node/pull/4537" target="_blank" rel="noopener noreferrer">Stop the cli from changing the bytes in user-supplied data</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4431" target="_blank" rel="noopener noreferrer">Infer protocol params in transaction build</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4408" target="_blank" rel="noopener noreferrer">Allow assembling transactions with no witnesses</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4276" target="_blank" rel="noopener noreferrer">Add tx-mempool command to CLI</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-api-1">cardano-api<a class="hash-link" href="#cardano-api-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4482" target="_blank" rel="noopener noreferrer">Return Lovelace for calculateMinimumUTxO</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4458" target="_blank" rel="noopener noreferrer">Make TxBodyContent an instance of Monoid</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4450" target="_blank" rel="noopener noreferrer">Auto-balance multiasset transactions</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-1">cardano-node<a class="hash-link" href="#cardano-node-1" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4263" target="_blank" rel="noopener noreferrer">Stop running CI when the only changes are to docs</a></li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4341" target="_blank" rel="noopener noreferrer">Rename TestEnableDevelopmentHardForkEras</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cli-api">cli-api</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/cli-api/page/5"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-29T00:00:00.000Z" itemprop="datePublished">November 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team implemented and tested a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/525" target="_blank" rel="noopener noreferrer">patch</a> that does not propagate future headers.
+It is under review, and we expect it can be released in the next Cardano node version.
+On the UTxO-HD front, we <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/510" target="_blank" rel="noopener noreferrer">finished</a> prototyping the <code>LedgerDB</code> and <code>BackingStore</code> redesign, which is required for the LSM-tree integration and might help us implement a more resource efficient in-memory backend.
+With this prototype finished we can start integrating the rest of the code.
+We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/513" target="_blank" rel="noopener noreferrer">investigated</a> the unexpected performance degradation observed when acquiring the block context.
+We also <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.7.0-pre" target="_blank" rel="noopener noreferrer">released Cardano node 8.7.0</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">moved</a> <code>tree-diff</code> outside <code>cardano-ledger</code> libraries.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-15-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Over the last two weeks, we managed to run a UTxO-HD capable node in <em>legacy mode</em>, which maintains the baseline memory usage while keeping all the ledger state in memory (as the current node does).
+This <em>legacy mode</em> could provide an alternative for releasing a UTxO-HD capable node where people can choose whether to store the large part of the UTxO set on disk or not.
+However, legacy mode involves code duplication, requires several weeks of work before it is production ready (more integration and testing). Moreover, we will not release UTxO-HD before Conway to avoid the risk of delaying the latter.
+On the other hand, to integrate the LSM-tree backend for UTxO-HD we need to redesign the Consensus storage layer, and this new design might enable us to implement an alternative in-memory backing store that will have a very similar performance and resource requirements as the current Cardano node.
+Therefore, during the coming months we will focus our efforts on the redesign of the storage layer and the LSM-tree backend.</p><p>On the Genesis front, we reviewed the <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/434" target="_blank" rel="noopener noreferrer">peer simulator</a> for Genesis tests, which was implemented by Tweag and was signed-off by the Consensus team.</p><p>We also continued our work on improving the handling of blocks from the future. We presented possible approaches to handling blocks from the future in the Chief Scientist Meeting at IOG, which was very well-received. The discussion with the IOG scientists touched upon the relationship of this approach to Ouroboros Chronos.</p><p><a href="https://github.com/jasagredo" target="_blank" rel="noopener noreferrer">Javier Sagredo</a> continues his cycle as release engineer, and he is working on version 8.7 of Cardano node.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-01-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team made progress on two fronts: the question of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">survivable eclipse duration</a>, which is part of our work <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/427" target="_blank" rel="noopener noreferrer">supporting Genesis delivery</a>, and how to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">improve the handling of blocks from the future</a>.
+Regarding the UTxO-HD branch, we managed to run a node with <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">legacy blocks</a>, which is syncing with mainnet, up to including Alonzo.
+We also <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/465#issuecomment-1788685122" target="_blank" rel="noopener noreferrer">investigated</a> a regression in mempool snapshotting, which was ultimately solved by a Ledger update, and will be fixed in the upcoming Node 8.6 release.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-18-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the Consensus team received additional benchmark results for the UTxO-HD feature that show the resource usage for the in-memory backend is not satisfactory for a mainnet release, and we need to wait on the implementation of a new infrastructure to benchmark the LMDB backend (not likely to happen before next year). While we wait on this, we are evaluating the feasibility of making the UTxO-HD feature switchable, which will enable us to release it as an experimental feature. On the Genesis front we produced the first draft for a Survivable Eclipse Duration Model. We released version 8.5.0 of Cardano node, resumed work on subpar handling of blocks from the future, and improved our tracing system to assist problem troubleshooting in the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>The Plutus workload benchmark for the in-memory backend <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203#issuecomment-1768560330" target="_blank" rel="noopener noreferrer">showed no regressions</a> for the metrics of interest, but it does show an increase in resource usage.</li><li>We got additional ad-hoc <a href="https://github.com/input-output-hk/cardano-node/issues/5495#issuecomment-1768593069" target="_blank" rel="noopener noreferrer">measurements</a> on memory UTxO-HD consumption. The memory usage of the in-memory backend is not satisfactory for a release. The memory usage of the LMDB backend is considerably lower, but we need to see how much lower we can bring it by running a node whose memory is constrained to 8GB.</li><li>We resumed work on an alternative solution that will make the UTxO-HD switchable. This will enable us to keep the baseline performance by totally disabling UTxO-HD, while allowing users to experiment with the feature if they wish to do so.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We produced the first draft for a Survivable Eclipse Duration Model (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/422" target="_blank" rel="noopener noreferrer">422</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> finished his cycle as release engineer. Node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.5.0-pre" target="_blank" rel="noopener noreferrer">8.5.0</a> has been released.</li><li>We resumed work on the subpar handling of block from the future (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">4251</a>).</li><li>We prepared the integration of <a href="https://github.com/input-output-hk/cardano-node/pull/5502" target="_blank" rel="noopener noreferrer">new tracing events</a> for the next node release. These tracing events will help debugging potential issues in the node (such as the previously mentioned <a href="https://github.com/input-output-hk/ouroboros-network/issues/4251" target="_blank" rel="noopener noreferrer">issue</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-04-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The value-only workload benchmarks showed that the mempool forging regression observed in the UTxO-HD branch was fixed by the latest patch. In spite of the higher resource demands, for the metrics of interest (forging, peer-propagation, end-to-end propagation) we see no regression when using the UTxO-HD version of Cardano node, with the <em>in-memory</em> backend.</p><p>On the Genesis front the Researchers continue reviewing different aspects of the design, in particular the argument that the Genesis rule will select the Cardano historical chain.
+We also merged a fix for the Babbage to Conway transition, and released a new version of Consensus.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elicited review from the Researchers on a final draft of the argument that the Genesis rule will select the Cardano historical chain (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/392" target="_blank" rel="noopener noreferrer">392</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We merged a minimal patch that fixes parameter update bug during the Babbage to Conway transition (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/366" target="_blank" rel="noopener noreferrer">366</a>).</li><li>We enabled richer tracers in <code>cardano-node</code> that can be useful in future debugging (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/384" target="_blank" rel="noopener noreferrer">384</a>).</li><li><a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continues with his release engineer activities, and created a new Consensus release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><ul><li>We merged a new section into our documentation that explains the existing hard-fork combinator (HFC) interface and its complexities, which are relate do why the Babagge to Conway transition surprised us in this way. This explanation is step one towards improving the HFC interface (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/369" target="_blank" rel="noopener noreferrer">369</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-20-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have a proposed fix for the mempool forging regression observed in the UTxO-HD branch. We need to confirm this by running system level benchmarks.
+We are still working on a fall back mechanism for keeping the baseline performance of Cardano node, if the performance of the UTxO-HD is not enough.
+On the Genesis front, we confirmed with the researchers that the proposed Genesis design is satisfactory for the historical Cardano chain.
+We also have a proposed fix for the wrong protocol version bug, found in the Sanchonet, after transitioning to Conway.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We optimized the mempool revalidation process, which in turn ought to solve the regression observed during system-level benchmarks in the in-memory version (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/349" target="_blank" rel="noopener noreferrer">349</a>). System level benchmark results are pending.</li><li>Regarding the workaround to keep the node&#x27;s baseline performance if that of the in-memory backend turns out not to be enough for our stakeholders (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">344</a>), we are still expanding the legacy block package such that we could at some point run the node with a legacy Cardano block. There are some loose ends to wrap up before we can begin the first test run.</li><li>We also brought the <code>UTxO-HD</code> branch up to date with node version <code>8.4.0</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We finished the discussion with the Researchers on how to argue that the proposed Genesis design is satisfactory for the existing historical Cardano chain.
+We are now drafting the final self-contained argument. (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4157" target="_blank" rel="noopener noreferrer">4157</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><ul><li>We debugged a bad parameter update on the <code>Babbage</code> to <code>Conway</code> transition in the SanchoNet testnet (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/339" target="_blank" rel="noopener noreferrer">339</a>).
+A superficial patch is within reach and we are in the process of reviewing the PRs related to this fix (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/340" target="_blank" rel="noopener noreferrer">340</a>, <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/354" target="_blank" rel="noopener noreferrer">354</a>, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/355" target="_blank" rel="noopener noreferrer">355</a>)
+However we are investigating a more principled redesign of the epoch transition logic, which required us to revisit the existing interfaces of the <code>ConsensusProtocol</code> type class and the <code>HardForkBlock</code> combinator (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/345" target="_blank" rel="noopener noreferrer">345</a> and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/346" target="_blank" rel="noopener noreferrer">346</a>). This is important to prevent these kind of errors in the future. This is an overdue step in the process of taking full ownership of the HFC: reconsidering original HFC design decisions for which we now have much more context, a few years later.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-06-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-06T00:00:00.000Z" itemprop="datePublished">September 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We were able to successfully run the system-level benchmarks for the UTxO-HD implementation, for the first time. There was an important regression in block forging performance that will have to be addressed before UTxO-HD is released. We also revisited the implementation of our query processing logic, which was needed to address the performance regression found in the query-by-address command. The preliminary performance results show that now the performance of this query is on-par with the Cardano baseline version, but we need further confirmation.
+On the Genesis front, we presented the grinding-aware safety argument for the proposed historical Cardano Genesis windows to the IOG Researchers.
+The Consensus release engineer finished his rotation: version <code>8.3.0-pre</code> of <code>cardano-node</code> is releasing 2023 September 5.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We ran the first successful system-level benchmarks for UTxO-HD (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/203" target="_blank" rel="noopener noreferrer">#203</a>) using the <em>in-memory</em> backend.<ul><li>We observed a factor 12 regression in the forging performance, which we will have to address. There are strong indications that the regression is due to the backing store accesses that take place when taking a mempool snapshot.</li><li>After the mempool regression is fixed the benchmarks need to be ran again.</li><li>System-level UTxO-HD benchmarks with the LMDB are still pending.</li></ul></li><li>UTxO-HD will eventually be necessary due to the growth of the UTxO set and other ledger state structures that live in memory at the moment. However, we are trying a strategy by which we could preserve the baseline performance of the node, in case SPOs and other node users are not ready to migrate yet (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>).</li><li>We implemented a new way of processing queries at the hard-fork block level, which resolves the performance regression observed in <code>GetUTxOByAddress</code> (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/205#issuecomment-1706878418" target="_blank" rel="noopener noreferrer">this comment</a>). Preliminary results are promising.</li><li>Regarding the roll out plan, UTxO-HD requires a significant change in the Consensus codebase. Even though we might be able to hide any potential performance impact in the node by keeping all data in memory (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/344" target="_blank" rel="noopener noreferrer">#344</a>), the Consensus component was significantly changed, so we might have to postpone releasing this feature to mitigate any risks of conflicting with the implementation of CIP-1694 and release of Conway.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We added tests that Consensus emits valid CBOR (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3099" target="_blank" rel="noopener noreferrer">#3099</a>). This helped us detect a couple of serialization bugs. The tests still need to be merged into the <code>main</code> branch (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/323" target="_blank" rel="noopener noreferrer">#323</a>).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> finished his release engineer rotation; <code>cardano-node 8.3.0-pre</code> is releasing 2023 September 5.</li><li>We helped to investigate a protocol version bug in Sanchonet (see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3491" target="_blank" rel="noopener noreferrer">#3491</a>).</li><li>We started to implement the Network interface for bootstrap peer functionality, from which Genesis will benefit as well (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/91" target="_blank" rel="noopener noreferrer">#91</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-23-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-23T00:00:00.000Z" itemprop="datePublished">August 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the UTxO-HD front we reached another important milestone, where we handed over the implementation for benchmarking and testing. We are working on addressing the first issues that were found during the integration tests.
+On the Genesis front we are finalizing the argument that a checkpoint is not necessary for the initial release, including supporting to support said argument. We are also working on the new node release, and several improvements to our code-base.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We addressed the issues that came from the benchmarking and testing phase (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/314" target="_blank" rel="noopener noreferrer">#314</a>).<ul><li>We fixed the operational-certificate update exception (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/305" target="_blank" rel="noopener noreferrer">#305</a>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h2><ul><li>We elaborated an inventory of the symbols used by downstream clients in an effort to clearly define the Consensus API, which will help managing changes and their impact to the downstream clients (see <a href="https://github.com/input-output-hk/cardano-api/tree/jasagredo/consensus-api" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We extracted the SOP modules to a separate package as part of our effort to reduce the Consensus API surface area (see <a href="https://github.com/input-output-hk/ouroboros-consensus/tree/jasagredo/test-sop" target="_blank" rel="noopener noreferrer">this branch</a>).</li><li>We took the first step towards improving how the Cardano hard-fork block is instantiated when running a node (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/275" target="_blank" rel="noopener noreferrer">#275</a>).</li><li>We decreased the flakiness for our test suite (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/284" target="_blank" rel="noopener noreferrer">#284</a>).</li><li>We incorporated and merged the pull-request on query versioning (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>).</li><li>We started working on new performance-based regression tests for mempool operations.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Nick Frisby</a> continues with his engineer responsibilities. Notably getting the Consensus release out for node <code>pre-release 8.3</code>. Nick also began integrating it into downstream branches (<code>cardano{-api,-cli,-node}</code>). The Node team has now taken over, since Nick had progressed up to the point where they needed to start making new design decisions. Related PRs:<ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/283" target="_blank" rel="noopener noreferrer">#283</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/301" target="_blank" rel="noopener noreferrer">#301</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/304" target="_blank" rel="noopener noreferrer">#304</a></li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/308" target="_blank" rel="noopener noreferrer">#308</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-09-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-09T00:00:00.000Z" itemprop="datePublished">August 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Consensus team worked on integrating the latest node release into the UTxO HD branch. Our ad-hoc benchmarks in which we sync a node from scratch showed that the LMDB backend uses around 8GB of memory.  We also released new versions of <code>fs-sim</code> and <code>fs-api</code>, and released <code>strict-checked-vars</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>Rebased UTxO-HD on top of node 8.2 (<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/256" target="_blank" rel="noopener noreferrer">issue</a>)</li><li>Address new <code>Maybe</code> translations for UTxOs in Conway 1.6. (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/261" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Performed ad-hoc benchmarking syncs with both implementations. The LMDB backend uses around 8GB of memory.</li><li><a href="https://github.com/input-output-hk/cardano-node/compare/96e92351ad35cfce1b0c2c47c4ed05792bf81fad..90d4c93af0846c9b027d530c042180c51aeee4fd" target="_blank" rel="noopener noreferrer">Fixed</a> an infinite loop on the mempool tracing code that was preventing the node from shutting down gracefully.</li><li>Fixed an infinite loop on the ledger state query for traversing queries that prevented the node from running <code>QueryUTxOByAddress</code> (<a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">PR</a>).</li><li>Measured the speed of <code>QueryUTxOByAddress</code> under different <code>queryBatchSize</code> values. There is a significant performance degradation for these queries when using the UTxO-HD version. Using the mainnet UTxO set at slot 90 million, querying an address took 40 seconds using the in-memory backend and 90 seconds using the LMDB backend, whereas the baseline took 7 seconds. We need to investigate if we can improve this situation or whether an external service that runs alongside the node is a better solution.</li><li>Refactored and implemented ledgertable-related classes for the general <code>HardforkBlock</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> and <a href="https://github.com/amesgen" target="_blank" rel="noopener noreferrer">Esgen</a> continue to engage with the Researchers on grinding against the Genesis design.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><ul><li>Drafted a document explaining versioning of local state queries <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/273" target="_blank" rel="noopener noreferrer">#273</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/nfrisby" target="_blank" rel="noopener noreferrer">Frisby</a> is the release engineer this cycle.</li><li>Successfully created work-in-progress <code>ouroboros-consensus</code> and <code>cardano-api</code> commits that integrate the 2023 Aug 7 tip of <code>cardano-ledger</code>. This will require a release of <code>ouroboros-consensus</code>, which hasn&#x27;t happened yet.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-26-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-26T00:00:00.000Z" itemprop="datePublished">July 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The <code>db-sync</code> team confirmed that the adaptor module the Consensus team provided for UTxO-HD integration, shows no performance degradation. Other clients who wish to integrate with UTxO-HD without using a on-disk storage could use that same approach for now.
+We also focused on completing tracing support for UTxO-HD in <code>cardano-node</code>.
+Currently we are working on UTxO-HD documentation, both for downstream consumers and for the general public; and generalizing the implementation further. </p><p>The team working on Genesis decided on a Genesis-motivated change of the epoch structure with the researchers, wrote a self-contained description of the statistical model for historical Genesis windows and eclipse durations, and merged two small improvements to the <code>ChainSync</code> client as part of the onboarding efforts for the team that will implement Genesis.</p><p>The Consensus team also investigated an issue on sanchonet (the Conway testnet) manifesting in long syncing pauses; identified a ledger bug which was promptly fixed by the Ledger team.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis-liaising">Genesis liaising<a class="hash-link" href="#genesis-liaising" title="Direct link to heading">​</a></h3><p>Improvements to the <code>ChainSync</code> client:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/222" target="_blank" rel="noopener noreferrer">#222</a>.</li><li><a href="https://github.com/input-output-hk/ouroboros-consensus/pull/233" target="_blank" rel="noopener noreferrer">#233</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-12-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team working on UTxO-HD discovered a space leak in the peer metrics code. This was communicated to the Networking team who has a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">proposed fix</a>. The ad-hoc benchmarks that the team ran using a local immutable DB server showed good memory and time performance. We still have to check the performance on a memory constrained machine.</p><p>The team working on the Genesis design started onboarding the team of engineers that will implement the new Genesis protocol. This team is also finalizing the statistical model for historical Genesis feasibility.</p><p>On the support front, the team <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/200" target="_blank" rel="noopener noreferrer">drafted</a> an information exchange requirement (IER) for the Networking team to safely and efficiently control peer load.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-28-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks the team working on the Genesis implementation continued to engage with the researchers, which resulted in various simplifications of the correctness argument for the historical Genesis window. They also decided on an approach for a syncing node to decide that it is (no longer) caught up. This functionality was requested by the networking team. </p><p>The team working on the UTxO-HD implementation ran ad-hoc benchmarks that showed performance issues, which are being investigated. They also merged several improvements required for the first UTxO-HD release, and added a package for easing integration with other downstream components.</p><p>Regarding our support activities, we integrated the latest Ledger changes into Consensus in preparation for release 8.2 of node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li><p>We continued to engage with the researchers on our probabilistic model for historical Genesis window, resulting in various simplifications that make the correctness argument more clear while not being excessively conservative.</p></li><li><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101#issuecomment-1607767722" target="_blank" rel="noopener noreferrer">decided on an approach</a> of how to implement functionality requested by the Networking team; namely, how a syncing node can safely conclude that it is (no longer) caught up. Certain parameters are still subject to discussion with the researchers, and we have still have to agree on a concrete API for this functionality with the Networking team.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li>We merged the last of the PRs that were part of UTxO-HD improvements for version <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/149" target="_blank" rel="noopener noreferrer">0.1</a>: expose UTxO-HD configuration options in the node, refactor ledger tables, and expose a method of computing the UTxO set size.</li><li>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/87" target="_blank" rel="noopener noreferrer">added</a> a new &quot;legacy&quot; cardano block in a new <code>ouroboros-consensus-cardano-legacy-block</code> package that should ease the transition for some downstream packages to UTxO-HD, like <code>db-sync</code>. This is really only useful for downstream packages that use the parts of consensus that don&#x27;t involve the storage components, in which case we can largely ignore ledger tables. Ignoring ledger tables could also make functionality like block (re-)application more performant for the legacy Cardano block as compared to the actual (UTxO-HD compatible) Cardano block.</li><li>We performed ad-hoc benchmarks of the UTxO-HD implementation, observing a regression in sync speed in the LMDB implementation as well as a regression in memory usage on the in-memory implementation. We are investigating this.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-14-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team had a very productive meeting with IOG Researchers. We now seem to be in alignment in regards to a strong argument that the <code>Byron</code> and <code>TPraos</code> eras do not need to be checkpointed for an MVP.
+There is one remaining question (which applies also to the <code>Praos</code> era): how to assess the threat that short forks pose against historical windows that underperformed? We are currently collaborating on that. We also drafted an argument that the updated &quot;Limit on Patience&quot; timeout sufficiently bounds how long the adversary can inflate a victim&#x27;s overall sync time.</p><p>On the UTxO-HD front, the prototype branch was rebased on top of the latest <code>ouroboros-consensus</code> <code>main</code> branch and integrated on top of <code>cardano-node 8.1.1-pre</code>. As a result, the mempool fairness fix that was released recently is now integrated into UTxO-HD.
+We managed to run a node again with UTxO-HD enabled.
+We also identified a race condition in the UTxO-HD prototype and fixed it. In addition, we started performing UTxO-HD ad-hoc benchmarks for <code>cardano-node</code>, which uncovered a performance regression on the Network component when using <code>GHC-9.2/9.4</code>. This is being addressed.</p><p>Regarding our support activities, we Released <code>fs-sim-0.2.0.0</code> and are in the process of preparing the 8.2 release of <code>cardano-node</code>. We also identified and started fixing incorrectly-unevaluated thunks in preparation for enabling CI NoThunks tests.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-31-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the Past two weeks we drafted an implementation path for concluding that a node is caught up, which will also be used to back Network&#x27;s ledger-peer selection (see <a href="https://github.com/input-output-hk/ouroboros-consensus/issues/101" target="_blank" rel="noopener noreferrer">this issue</a>). We also carried a thorough investigation into the exact feasibility of applying the Genesis rule to certain historical parts of the chain.</p><p>On the UTxO-HD front, we are working on improving the ledger tables design and wrapping up the improved DB locking mechanism. We also released packages that are required not only by UTxO-HD but are already used in cardano.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li>We have a plan for making the ledger tables in UTxO-HD more ergonomic by mimicking <code>SOP</code> classes like <code>HPure</code> and <code>HAp</code> . In short, we implement generalised versions of important classes like <code>Applicative</code> and <code>Traversable</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h2><ul><li><code>fs-sim-0.1.0.2</code> and <code>fs-api-0.1.0.2</code> were released, which makes them now compatible with GHC up to <code>9.6</code>.</li><li><code>ouroboros-consensus-0.7.0.0</code> was released for <code>cardano-node</code> <code>8.1</code>, including query serialization fixes for backwards compatibility.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we brought further improvements into the Genesis design in collaboration with the IO Research and Networking teams. These improvements concern the Genesis selection rule, candidate rule, and root peers usage. See the <!-- -->[Genesis][#genesis]<!-- --> section for more details.</p><p>Regarding our UTxO-HD prototype, during the past two weeks we put together a pull-request that improves the DB locking mechanism, started porting the mempool fairness improvements from our <code>main</code> branch, and integrated a new open source library (that implements cancellative monoids) that allowed us to simplify our code and get a small performance gain.</p><p>We improved our tooling by releasing an <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/68" target="_blank" rel="noopener noreferrer">immutable DB server</a>, which can be used for testing and benchmarking purposes, and a <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/70" target="_blank" rel="noopener noreferrer"><code>db-truncater</code></a> program, which can be used in disaster recovery and benchmarking scenarios.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>The consensus team working on Genesis:</p><ul><li>Improved the genesis selection rule as a result of our interaction with IO Research.</li><li>Studied how the hard-fork combinator handles forecasting at era transitions, and <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/89" target="_blank" rel="noopener noreferrer">improved our documentation</a>.</li><li>Determined that the simplest candidate rule we had considered will work for the Genesis window at era transitions, at least for the MVP.</li><li>Elaborated concrete proposal for the Genesis State Machine.</li><li>Met with the Networking Team and advised/co-designed how to implement the stop gap usage of public trusted root peers before Genesis is released (it&#x27;s similar to the Genesis State Machine).</li></ul><p>The team is currently re-analyzing the Limit on Patience, which can be less aggressive now that we&#x27;ve re-introduced the Genesis State Machine.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-03-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we made some important progress in the Genesis design.
+It seems the <code>BlockFetch</code> logic need not be modified for Genesis, although this
+needs to be confirmed. We started a DoS mitigation handbook and updated our
+conceptual component diagram to guide the Genesis design. We engaged with the
+IOG researchers to work on the Limit on Patience attack vector, work in this
+area is still ongoing. We sketched a design to decouple the CPU load of the node
+from its responsiveness to the socket. Finally, we discussed with Networking our
+approach to lower the performance impact of the BlockFetch decision logic, and
+got green light from them.</p><p>We migrated the consensus code to a <a href="https://github.com/input-output-hk/ouroboros-consensus" target="_blank" rel="noopener noreferrer">new
+repository</a>, splitting
+it from the <code>ouroboros-network</code> repository, and released version 0.6 of
+Consensus.</p><p>We also merged the mempool fairness improvement to main branch.</p><p>Another significant enhancement to our documentation was the addition of an
+explanation of the hardfork combinator forecast horizon.</p><p>See the sections below for more details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><p>We reviewed the <code>BlockFetch</code> design documentation, and added some source-code
+comments that emphasize certain properties of the decisions the <code>BlockFetch</code>
+logic makes that are helping us confirm that Genesis does not require any
+changes to <code>BlockFetch</code>. We are waiting on input from our former system
+architect to verify this.</p><p>We migrated and updated the conceptual component diagram in the <code>ouroboros-consensus</code>
+repository which helps us situate the Genesis design and argument.</p><p>We engaged with the IOG researchers about the Genesis design. We sketched out a
+way to address the concern that the Limit on Patiente (LoP) attack vector duty
+cycle is indeed low, but it&#x27;s still non-trivial to ultimately conclude it&#x27;s
+sufficiently low.</p><p>We also sketched a design to decouple the CPU load of the node from its
+responsiveness to the socket, since the LoP is a relatively tight timeout, and
+node performance bugs inducing seconds-worth of latency are unfortunately
+familiar phenomena.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/62" target="_blank" rel="noopener noreferrer">added an
+explanation</a> of
+a question that we had to explain many times about the exact behavior of the
+hardfork combinator forecast horizon.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-19-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the improved DB lock mechanism
+for UTxO-HD, and modifications to the mempool benchmarks that this prototype
+requires.</p><p>On the Genesis front we validated that the fragment size calculation in
+<code>BlockFetch</code> is a major performance sink for ChainSync Jumping. By removing it
+we will get performance that is acceptably close to that of the baseline. We
+also started investigating a performance fix that does not alter the existing
+baseline behavior too much. In addition we reviewed our Genesis attack vector
+calculations.</p><p>On the support front we released Consensus 0.4, and we are working on improving
+our release process, to support the Cardano-wide efforts in this area. We also
+performed an analysis on the number of file descriptors that consensus use. This
+information can be used by the node operators to check if the number of file
+descriptors they want to support are enough.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team finished the UTxO-HD prototype refactoring. We are
+now working on improving the DB lock mechanism to improve performance. We also
+introduced several improvements to the file system abstraction and simulation
+layer (<code>fs-sim</code>), which culminated in the release of <code>fs-sim-0.1.0.0</code> and
+<code>fs-api-0.1.0.0</code> to <code>CHaP</code>.</p><p>On the Genesis front we distributed the updated Genesis design document,
+soliciting feedback from Networking Team and IOG Researchers. We also opened up
+a PR for the adversarial leader schedule <code>QuickCheck</code> generator, which is being
+reviewed.</p><p>On the support front, we got a new Consensus version that can use different
+fundamental VRF crypto primitives for Babbage and Conway eras.</p><p>On the tech debt front we fixed an bug in the followers logic, which was
+discovered by our <code>QuickCheck</code> property tests.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the consensus team continued working on the refactoring of the UTxO HD
+prototype, and design and testing of Genesis. We also extracted the <code>fs-sim</code>
+package, which provides a file-system abstraction layer that can be used for
+testing and simulation. This makes the Consensus code base smaller, while
+providing a package that the community can reuse and contribute to. We also
+fixed a failing property test related to iterators. We are also working on
+mempool and VRF improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-details">Low-level details<a class="hash-link" href="#low-level-details" title="Direct link to heading">​</a></h2><ul><li>Extraction of <code>fs-sim</code> code from <code>ouroboros-network</code>:<ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4425" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4425</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/1" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/1</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/2" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/2</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4460" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4460</a></li></ul></li><li>Smaller changes in <code>fs-sim</code> code (some required by <code>UTxO-HD</code>):<ul><li><a href="https://github.com/input-output-hk/fs-sim/pull/5" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/5</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/6" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/6</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/7" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/7</a></li><li><a href="https://github.com/input-output-hk/fs-sim/pull/8" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/fs-sim/pull/8</a></li></ul></li><li>Released cardano-lmdb-simple-0.6.0.0<ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/20" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/lmdb-simple/pull/20</a></li><li><a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/150" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-haskell-packages/pull/150</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Consensus team continued working on refactoring and improving the UTxO-HD
+prototype, and introducing improvements to the <code>lmdb</code> related packages. In
+particular we identified an opportunity to gain performance by handling locks in
+a more optimal way.</p><p>On the Genesis front, we sketched a mitigation for an issue that <code>PNSol</code> and
+Researchers caught. We also came op with a road map for not only testing the
+Genesis prototypes, but also for enriching the tests we already have.</p><p>Regarding technical debt, next to some minor improvements, we created
+component-level micro-benchmarks for adding transactions to the mempool. The
+results of these benchmarks will be published in the <code>ouroboros-consensus</code> <a href="https://input-output-hk.github.io/ouroboros-consensus/" target="_blank" rel="noopener noreferrer">web
+page</a>.</p><p>We also finished moving the Consensus documentation to the <code>ouroboros-consensus</code>
+repository, released <code>ouroboros-consensus</code> <code>0.3.0.0</code>, and reduced the time
+GitHub actions take in <code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on refactoring and improving the UTxO-HD prototype. As a
+result of the first round of sytem-level benchmarks, we identified an
+opportunity to optimise the way we handle locks to improve performance
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4393" target="_blank" rel="noopener noreferrer">#4393</a>).</p><p>Also, we introduced several improvements to the <code>lmdb</code> related packages:</p><ul><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/19" target="_blank" rel="noopener noreferrer">New tests</a> for read-only transaction handles.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/18" target="_blank" rel="noopener noreferrer">New functions</a> and <a href="https://github.com/input-output-hk/lmdb-simple/pull/13" target="_blank" rel="noopener noreferrer">data types</a>.</li><li><a href="https://github.com/input-output-hk/lmdb-simple/pull/11" target="_blank" rel="noopener noreferrer">Updates</a> to support improved type safety and smaller constraints in
+the UTxO HD prototype.</li><li>Windows and MacOS <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">CI support</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We sketched out a mitigation of the issue that <code>PNSol</code> and Researchers caught in
+the Genesis design.</p><p>We came up with a road map for testing the Genesis prototypes, including early
+milestones that are applicable to today&#x27;s master branch, ie tests that are
+useful before Genesis, and that will be nicely enriched when we do add Genesis.</p><p>We developed the aforementioned tests, specifically a <code>QuickCheck</code> generator for
+the Honest leader schedule and one as-aggressive-as-possible Adversarial
+leader schedule that together satisfy the Praos properties that the Consensus
+design takes as invariants.</p><p>We investigated why the improved <code>ChainDB</code> queueing implementation behaves
+differently in the baseline compared to the prototype, and we are close to
+having a full picture of how the Consensus components interact during bulk sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4400" target="_blank" rel="noopener noreferrer">created</a> component-level micro-benchmarks for adding transactions
+to the mempool. We plan on extending this to more mempool actions and different
+types of blocks. We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4422" target="_blank" rel="noopener noreferrer">store</a> the benchmark data to make it available
+to the GitHub action that <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/12" target="_blank" rel="noopener noreferrer">publishes</a> the benchmarks results.</p><p>Other minor improvements include:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4429" target="_blank" rel="noopener noreferrer">Removal</a> of <code>Test.Util.Classify</code> in favour of <code>Test.StateMachine.Labelling</code>.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4423" target="_blank" rel="noopener noreferrer">Addition</a> of <code>-Wunused-packages</code> to the default <code>ghc-options</code> for Consensus
+packages.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We finished moving the Consensus documentation <a href="https://github.com/input-output-hk/ouroboros-network/pull/4374" target="_blank" rel="noopener noreferrer">from</a>
+<code>ouroboros-network</code> <a href="https://github.com/input-output-hk/haskell-lmdb/pull/8" target="_blank" rel="noopener noreferrer">to</a> <code>ouroboros-consensus</code>, in preparation for
+migrating the code to the latter repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4412" target="_blank" rel="noopener noreferrer">released</a> ouroboros-consensus 0.3.0.0.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4421" target="_blank" rel="noopener noreferrer">reduced</a> the load in the <code>ouroboros-network</code> GitHub actions,
+thereby reducing the time CI jobs take.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-22-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-22T00:00:00.000Z" itemprop="datePublished">February 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks we got the results from the system level benchmarks
+for UTxO HD. They showed a substantial performance regression, so we spent some
+time analyzing the results. We found out the frequency at which ledger snapshots
+were taken was too high, so we requested the benchmarking team a new run with a
+more realistic snapshotting policy. We continued refactoring and improving the
+prototype, and we released UTxO-HD related packages to CHaP.</p><p>We met with IOG researchers and networking specialists to discuss the Genesis
+design, which was well received. We continued working on testing and
+benchmarking different Genesis prototypes.</p><p>We are also working on solving a test failure related to iterators. This work
+derived in several improvements such as better documentation, a framework for
+writing unit (and regression) tests, and the possibility of debugging
+<code>QuickCheck</code> counter examples in the REPL.</p><p>Finally, we released <code>ouroboros-consensus</code> 0.2.0.0 and
+<code>ouroboros-consensus-cardano</code> 0.3.0.0 to CHaP</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We got the results of the first system level benchmarks for UTxO HD. They seemed
+to indicate a significant regression in performance. After looking into the
+benchmark logs we found that the benchmark runs took ledger state snapshots too
+often, due to the default snapshotting policy depending on <code>k</code>, and <code>k</code> being so
+small in the benchmark runs. Therefore, the next step is to re-run the
+benchmarks with a snapshotting policy that more closely resembles the one from
+mainnet.</p><p>At the same time, we continued refactoring and cleaning up the prototype. </p><p>Also, we prepared the <code>anti-diff</code> packages (<code>fingertree-rm</code>, <code>diff-containers</code>,
+<code>simple-semigroupoids</code>) and the <code>lmdb</code> related packages (<code>cardano-lmdb</code> and
+<code>cardano-lmdb-simple</code>) to <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>The Genesis design was presented to the IOG researchers and Peter Thompson from
+NSol. It was well received. They pointed out one blindspot, but we think it&#x27;ll
+be relatively simple to mitigate.</p><p>In parallel, we continued developing test and benchmarks for the Genesis
+prototypes. I particular we tested and implemented a potential fix for
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1439708022" target="_blank" rel="noopener noreferrer">increased ChainDB dequeue timings</a>, which partly
+behaved as we expected, but still needs further investigation. Also we obtained
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4037#issuecomment-1434745031" target="_blank" rel="noopener noreferrer">new benchmarking data</a> for the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Related to <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">#4183</a>, we developed a <a href="https://github.com/input-output-hk/ouroboros-network/pull/4379" target="_blank" rel="noopener noreferrer">DSL</a> for specifying
+<code>ChainDB</code> unit tests. This will allow us to better understand the
+counter-examples returned by QuickCheck tests, and to write <a href="https://github.com/input-output-hk/ouroboros-network/pull/4383" target="_blank" rel="noopener noreferrer">regression
+tests</a> for them. Also, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4358" target="_blank" rel="noopener noreferrer">added a module</a> to enable
+QuickCheck counter-examples to be run on the REPL, allowing for faster debugging
+feedback. Also, we improved the documentation related to followers
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4372" target="_blank" rel="noopener noreferrer">#4372</a>).</p><p>We are also working on a design for optimizing the way we handle blocks from the
+future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We released <code>ouroboros-consensus</code> 0.2.0.0 and <code>ouroboros-consensus-cardano</code>
+0.3.0.0 to CHaP. Remember that we decided to split the packages related to
+Consensus into two bundles, one with the core functionality, Cardano-agnostic
+code, and another bundle with instantiations specific to Cardano.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continue refactoring the UTxO HD prototype while we wait for the system level
+benchmarks. We have created a new repository that contains the <code>anti-diff</code>
+packages used in this prototype.</p><p>On the Genesis front, we are preparing another meeting with the researchers to
+audit the implementation design, and we continued working on basic tests and
+simplifications.</p><p>During the past two weeks we also introduced two new tools. One for dumping CBOR
+encoded blocks to JSON, and another to serve a local immutable DB.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We are in the process of refactoring the UTxO HD prototype, while we wait for
+the system level benchmarks to confirm if the performance of the prototype is
+satisfactory.</p><p>We also set up a repository for the <a href="https://github.com/input-output-hk/anti-diffs" target="_blank" rel="noopener noreferrer"><code>anti-diff</code></a> package, which
+required us to refactor the code, write documentation, and prepare a release to
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4347" target="_blank" rel="noopener noreferrer">basic tests</a> for the <em>Limit on Eagerness</em> property of
+Genesis. We also introduced further robustness and simplifications in the
+Genesis Density governor. Finally, we developed a presentation to engage again
+with the researchers on our Genesis implementation design.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We are in the process of <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/6" target="_blank" rel="noopener noreferrer">polishing</a> the <code>ouroboros-consensus</code>
+documentation site, which we will use a the entry point for Consensus related
+documentation. The first version will not be complete, but we plan on
+systematically improving it.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4335" target="_blank" rel="noopener noreferrer">added a tool</a> to <code>ouroboros-consensus-cardano-tools</code> which allows
+to dump the Chain DB blocks or any given CBOR encoded blocks as JSON.</p><p>We also added <a href="https://github.com/input-output-hk/ouroboros-network/pull/4339" target="_blank" rel="noopener noreferrer">another tool</a> that serves an existing immutable DB via
+BlockFetch and ChainSync. This tool can help in assisting our local benchmarking
+efforts (for instance Genesis&#x27; ChainSync jumping prototype).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-25-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-25T00:00:00.000Z" itemprop="datePublished">January 25, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team finished the testing activities
+around the UTxO-HD prototype. This is a very important milestone which will
+enable us to run system-level tests and benchmarks, as well as start refactoring
+and cleaning the prototype. Regarding our Genesis workstream, we elaborated a
+roadmap that gives an indication of the remaining work. We also continued our
+work on benchmarking chain-sync-jumping. We also continued working on improving
+the way we handle blocks from the future, and advancing the integration of the
+new VRF and KES crypto.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>As the prototype is nearing its completion, it was important to have enough
+confidence that we will be able to move additional parts of the ledger state
+onto disk. We worked together with the Ledger team to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4296" target="_blank" rel="noopener noreferrer">elaborate a
+sketch</a> on how the UTxO-HD design would accommodate the migration of
+additional data from memory to disk. This gave us enough confidence that the
+current architecture will be extensible in the future.</p><p>On the testing front, we <a href="https://github.com/input-output-hk/ouroboros-network/pull/4274" target="_blank" rel="noopener noreferrer">added</a> property-based tests for the UTxO-HD
+type classes. </p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/issues/4289" target="_blank" rel="noopener noreferrer">enabled disabled components</a>, and addressed several
+technical debt issues:</p><ul><li>Implement <code>splitSized</code> anti-diff split (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4269" target="_blank" rel="noopener noreferrer">#4269</a>), and integrate it
+into consensus (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4273" target="_blank" rel="noopener noreferrer">#4273</a>).</li><li>Renaming of <code>peekVal</code> to <code>peekMDBVal</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/7" target="_blank" rel="noopener noreferrer">#7</a>).</li></ul><p>We ran ad-hoc benchmarks for syncing a chain from scratch and replaying. We
+found a race condition in the LMDB backing store, which <a href="https://github.com/input-output-hk/ouroboros-network/pull/4283" target="_blank" rel="noopener noreferrer">we fixed</a>.
+After the fix we were able to successfully run these benchmarks. The results
+were published by <a href="https://github.com/input-output-hk/ouroboros-network/pull/4295" target="_blank" rel="noopener noreferrer">this pull request</a>.</p><p>We used our <code>db-analyser</code> tool to benchmark the cost of reading keys and
+flushing values to disk. The following plot shows the duration of these disk
+operation in relation to the main ledger operations, where we can see that the
+cost of the former are comparatively low. The spike at the beginning of the
+graph is when, at the start of the Shelley era, the <em>entire</em> UTxO set is flushed
+to disk.</p><p><img loading="lazy" alt="UTxO-HD read and flush benchmarks" src="/cardano-updates/assets/images/2023-01-25-consensus-utxo-hd-read-and-flush-benchmarks-6b129a1acaa4bb48443ee81add51fd39.png" width="1600" height="800" class="img_ev3q"></p><p>After months of hard work adding tests for the prototype, we are ready to run
+end-to-end tests on the node, and system level benchmarks. This signals a very
+important milestone for the UTxO-HD workstream 🎉.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We elaborated a <a href="https://github.com/input-output-hk/ouroboros-network/blob/a626c84f6df585dd27d735eb7eec73904a1f570e/ouroboros-consensus/docs/2023-Jan-Genesis-roadmap.md" target="_blank" rel="noopener noreferrer">high-level decomposition</a> of the remaining
+work for Genesis. We also continued benchmarking the chain-sync-jumping
+happy-path.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We continued working on improving the way we handle blocks from the future.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We completed the mapping of <code>Crypto</code> to <code>HeaderCrypto</code> and body <code>Crypto</code>.
+<code>HeaderCrypto</code> is moved to <code>cardano-protocol-tpraos</code>. We created a draft <a href="https://github.com/input-output-hk/cardano-ledger/pull/3262" target="_blank" rel="noopener noreferrer">pull
+request</a> to facilitate compiling consensus.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-11-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The consensus team is resuming its activities after the Christmas break. During
+these weeks we focused on cleaning and benchmarking the UTxO-HD prototype, and
+discussing with the Ledger team the changes that might be required for the next
+iterations. The pull request that adds the Conway era is waiting for a second
+review round and we hope to merge it soon. On the technical debt side we are
+looking into a property-test failure found in the iterators. We are
+investigating if this is an error in the model or in the implementation. We also
+improved the documentation of our testing code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD Prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We worked with the Ledger team to start preparing the next versions of UTxO-HD.
+The Ledger team is concerned that for the remaining maps we might need the full
+ledger state on epoch boundaries. Since the main consumer of the ledger rules is
+Consensus, the code that requires access to a full state could be moved from the
+ledger to some Ledger-Consensus bridge. Eg. the traversal of rewards could take
+place in such bridge, instead of querying the ledger for the values that are
+required in the epoch-transition computations.</p><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4234" target="_blank" rel="noopener noreferrer">relocated</a> some UTxO-HD definitions, in preparation for merging
+the prototype into <code>master</code>.</p><p>We also completed updated local benchmarks comparing the replay time and memory
+consumption of:</p><ul><li>the baseline node (<code>f2fc76ef45647275c98634da1718290b976ff364</code>) </li><li>the UTxO-HD node with the in-memory backend </li><li>the UTxO-HD node with the LMDB backend</li></ul><p>The following plot shows the results: we can see that the LMDB node barely
+reaches 8GB of memory, but it takes 1.78 times longer to replay the chain. The
+in-memory backend is about 30 minutes faster, but still slower than the baseline
+version. We are aware of this phenomenon and it is inherent to the problem of
+maintaining sequences of differences of the last <code>k</code> ledger states that allows
+us to perform rollback and roll-forward. We are in the process of measuring
+syncing from scratch times.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2023-01-11-utxo-hd-replay-benchmarks-dcf6daaf5460de7591a60db1457d2e58.png" width="2500" height="1700" class="img_ev3q"></p><p>We also <a href="https://github.com/input-output-hk/ouroboros-network/pull/4263" target="_blank" rel="noopener noreferrer">added <code>StaticEither</code> accessors</a> that helped us to simplify
+the UTxO-HD prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era">New Conway era<a class="hash-link" href="#new-conway-era" title="Direct link to heading">​</a></h3><p>We incorporated the feedback of the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">pull request</a>, and rebased this
+branch on top of <code>master</code>. The PR is pending a second review round and we hope
+to merge this soon.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We are investigating a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4183" target="_blank" rel="noopener noreferrer">property-testing failure</a> involving
+iterators. Solving this requires understanding the expected behavior of
+iterators in the counterexample found by <code>QuickCheck</code> to determine if the error
+is in the model or in the implementation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4248" target="_blank" rel="noopener noreferrer">moved</a> the contents of <code>docs/Testing.md</code> closer to the code, so that the
+explanations about the tests are easier to find in the relevant modules, and the
+documentation is easier to keep up to date.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the Consensus team finalized the QSM tests for the
+backing store and Mempool on the UTxO-HD branch with important discoveries
+regarding parallel QSM testing. We also worked with the Ledger team to envisage
+the modifications that are required in Ledger and Consensus to accommodate the
+changes in the crypto VRF and KES. The <code>db-analyser</code> now supports bechmarking
+the ledger operations, which will allow us to identify, debug, and profile
+potential performance problems. We drafted a document that defines how to manage
+the versions of Consensus-related packages. The top level documentation of
+<code>ouroboros-network</code> now features a description of the consensus components and
+provides a hyperlinked map to the modules documentation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>Whereas we had passing sequential state-machine tests for the mempool, the
+parallel case proved to be more challenging than we thought. The operation of
+adding a list of transactions to the mempool is not atomic and, as a result,
+when adding a list of transactions, transactions from other processes can be
+added in between. The mempool implementation handles this correctly, however
+this required us to <a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">redesign</a> the parallel model we had to take
+the lack of atomicity into account.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We finished refactoring the backing store property tests. The second review
+round is ongoing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We are working on benchmarking (in terms of time and number of IO operations)
+fetching/looking up data from disk.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>We worked on the design of a mechanism to prevent a DoS attack on our Genesis
+design related to rollbacks. This was arguably the biggest outstanding question.</p><p>During the discussions around Genesis, we noticed a design boundary that nicely
+delineates a fundamental component. We almost have a full Haskell prototype of
+it. It will be very nicely self-contained, perhaps even usable in the ultimate
+implementation!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>We collaborated with the Ledger team on preparing the ledger state and crypto
+types to avoid huge allocation on the epoch boundary when changing aspects of
+the crypto that will only manifest in headers, not in the ledger states.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pull-request</a> that adds a support to <code>db-analyser</code> for
+benchmarking ledger operations. This will allow us to identify, debug, and
+profile potential performance problems. The benchmark focus on the main 5 ledger
+operations that are involved in chain syncing, block forging, and block
+validation, namely:</p><ol start="0"><li>Forecast.</li><li>Header tick.</li><li>Header application.</li><li>Block tick.</li><li>Block application.</li></ol><p>The following figure shows a plot of the benchmarking results for the first 65
+million blocks (approximately) of the Cardano chain. The thin yellow lines under
+the x-axis show the epoch boundaries, whereas the thick yellow lines correspond
+to the era transitions.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-12-14-ledger-ops-benchmark-c46be3db45ff5480ed104e0d520711a6.png" width="1600" height="800" class="img_ev3q"></p><p>As we can see in this figure, era and epoch boundaries require more computation
+time. The ledger team are aware of this problem, and we are working to improve
+this situation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4207" target="_blank" rel="noopener noreferrer">drafted a document</a> motivating and defining how Consensus (and
+possibly other core teams) will/should manage our package versions. This
+pull-request garnered many great discussions from our team members and other
+teams too: Sebastian Nagel, Arnaud Bailly, Michael Peyton-Jones, Ziyang Liu, et
+al. We want to thank you all for your input, and we found this discussion very
+enlightening!</p><p>We merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">pull request</a> that adds an overview of consensus to
+the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network. This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus/page/4"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/6"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>32 posts tagged with &quot;consensus&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team merged improvements to the monadic
+cursor API that was needed to implement LMDB range reads, which is in turn
+required for the implementation of the UTxO HD feature. We added tables to
+several tests in for the UTxO HD feature, which increases our confidence in the
+correctness of the prototype. The mempool property tests are close to being
+completed. Also, we finished the LSM tree tuning algorithm.</p><p>On the Genesis front we started simplifying the BlockFetch logic with
+CSJ-specific workloads in mind. </p><p>We are also documenting the Block Diffusion Pipelining feature, and added a
+high-level overview of consensus to the top level documentation of
+<code>ouroboros-network</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd-prototype">UTxO HD prototype<a class="hash-link" href="#utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged the implementation of a monadic cursor API (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>)) which was
+needed to solve a bug with LMDB range-reads. After this PR was merged, we focused on
+bridging the gap between the <code>lmdb-simple</code> interface and consensus by facilitating
+using <code>lmdb-simple</code>&#x27;s cursor API without <code>Serialise</code> constraints (<a href="https://github.com/input-output-hk/lmdb-simple/pull/3" target="_blank" rel="noopener noreferrer">#3</a>).</p><p>We refactored the backing store property tests to use <code>quickcheck-lockstep</code>
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">#4081</a>).</p><p>We added tables to the mock ledger in the UTxO-HD feature branch
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4184" target="_blank" rel="noopener noreferrer">#4184</a>). Every test that used to run with <code>SimpleBlocks</code> now uses
+tables. This will enable us to exercise the UTxO HD mempool integration by
+leveraging the existing mempool property-tests. The new state-machine
+property-tests are still needed for testing the parallel behaviour of the
+mempool.</p><p>Our work on the mempool state-machine tests revealed the need for improvements
+in the <code>quickcheck-state-machine</code> library. Parallel testing assumed that the
+state machine did not have access to mutable references. However, the mempool
+tests require the use of such mutable references for mocking the ledger
+interface. As a result, our parallel tests were failing with rather obscure
+messages. @Jasagredo submitted a pull request (<a href="https://github.com/stevana/quickcheck-state-machine/pull/12" target="_blank" rel="noopener noreferrer">#12</a>) that allows for
+new mutable references to be created at each run of the state machine.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We finished the LSM Tree tuning algorithm. We are currently tidying up the code
+and gathering results (i.e., plots and their interpretation).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="csj-prototype">CSJ prototype<a class="hash-link" href="#csj-prototype" title="Direct link to heading">​</a></h3><p>We started simplifying the BlockFetch logic with CSJ-specific workloads in mind.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-vrf-and-kes-crypto-integration">New VRF and KES crypto integration<a class="hash-link" href="#new-vrf-and-kes-crypto-integration" title="Direct link to heading">​</a></h3><p>Started working on supporting new version of <code>StandardCrypto</code> which uses compact
+KES and batched VRF (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4151" target="_blank" rel="noopener noreferrer">#4151</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We reviewed the existing state of the Block Diffusion Pipelining document. We
+are now working on the &quot;Implementation&quot; section (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4020" target="_blank" rel="noopener noreferrer">#4020</a>).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>We cleared up our understanding of the error dynamics of forecasting
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4146" target="_blank" rel="noopener noreferrer">#4146</a> and <a href="https://github.com/input-output-hk/ouroboros-network/pull/4174" target="_blank" rel="noopener noreferrer">#4174</a>).</p><p>We submitted a pull request that adds an overview of consensus to the <a href="https://input-output-hk.github.io/ouroboros-network/" target="_blank" rel="noopener noreferrer">top level
+documentation</a> of
+ouroboros-network (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">#4197</a>). This overview describes the consensus components and adds a
+hyperlinked map to the modules documentation.</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4197" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4197</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team started documenting the
+implementation of the UTxO HD feature and continued developing tests for it. As
+part of our work on UTxO HD, we improved the Haskell support for LMDB. We also
+spent time working on the LSM tree prototype, and designed a parameter tuning
+algorithm for it. Regarding our work on Genesis, our investigation of the
+&quot;plateaus&quot; pointed at the <code>TICKF</code> slowdown on era boundaries as culprit. This
+led us to developing a caching strategy that will not only remove the
+aforementioned &quot;plateaus&quot;, but can help alleviating the growing block production
+delay on epoch switch. We also helped reviewing the block forge credential
+hotswap feature, which is intended for use in the adoption of P2P.</p><p>We also worked on paying technical debt and fostering collaboration. In
+particular, we improved the <code>io-sim</code> framework, which is crucial for testing and
+simulating Cardano components. We also removed thunks that appeared on era
+translations, and improved our diffusion pipelining feature. We are working on a
+presentation for explaining Praos and Genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: in progress.<ul><li>We added documentation for this feature.</li><li>We developed the second version of the mempool tests.</li><li>We fixed benchmarks that were inflating the speedup we observed in the
+anti-diff implementation of sequences of differences. Speedups are now in the
+range of <!-- -->[3.33, 4.75]<!-- -->, which remain significant.</li><li>We continued improving Haskell LMDB support.</li><li>We finished implementing a &quot;parameter tuning algorithm&quot; for the LSM tree
+prototype. This enables us to run experiments to check the correctness of
+the algorithm.</li></ul></li><li>Genesis: in progress.<ul><li>Work investigating the &quot;plateaus&quot; in the <code>ChainSync</code> jumping prototype
+pointed to the <code>TICKF</code> slowdown on era boundaries as culprit.</li></ul></li><li>Tech debt:<ul><li>We improved the capabilities of our <code>io-sim</code> library, which is crucial for
+testing and simulating Cardano components.</li><li>We removed thunks from epoch translations in the ledger.</li><li>We added Linux CI support for <code>lmdb-simple</code>.</li><li>We got pending diffusion pipelining improvements merged.</li></ul></li><li>Fostering collaboration:<ul><li>We are working on a explanation of Praos and Genesis protocols.</li></ul></li><li>Support:<ul><li>Investigation of CSJ &quot;plateaus&quot; led us to developing a caching strategy for
+<code>TICKF</code> that will not only remove these &quot;plateaus&quot;, but can help alleviating
+the growing block production delay on epoch switch.</li><li>We reviewed the block forge credential hotswapping feature which is intended
+for use in the adoption of P2P.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We merged PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4060" target="_blank" rel="noopener noreferrer">#4060</a>, which adds a report documenting the UTxO HD
+feature, and puts emphasis in explaining how the mempool works in combination
+with UTxO HD.</p><p>We opened a draft PR with the second iteration of the property tests for the
+mempool (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4076" target="_blank" rel="noopener noreferrer">#4076</a>).</p><p>We fixed the <code>Arbitrary</code> instances for keys and values in <code>DiffSeq</code> benchmarks
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4143" target="_blank" rel="noopener noreferrer">#4143</a>). The problem was that we were testing with mostly small
+values, which artificially boosted the performance gains we saw on benhcmarks.
+Speedups are now in the range of <!-- -->[3.33, 4.75]<!-- --> across the different
+configurations.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We focused on incorporating feedback on the monadic cursor API PR (<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">#1</a>).
+This required us to make small tweaks to <code>quickcheck-lockstep</code> to test the new
+API. We also updated the backing store property tests to use the new version of
+the monadic cursor API.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h3><p>We worked on the LSM tree prototype. In particular: finished implementing a
+&quot;parameter tuning algorithm&quot; that adapts the LSM tree design based on factors
+like:</p><ul><li>workload</li><li>machine specs, </li><li>and characteristics of the data being stored. </li></ul><p>We are now running experiments to gather results and cross-reference them with
+existing experimental results from the LSM tree paper to see if the algorithm is
+working correctly.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>We focused on investigating the &quot;plateaus&quot; in the <code>ChainSync</code> tip, which turned
+out to be due to the <code>TICKF</code> bug which we previously were only aware of in the
+context of the long forging times near epoch boundaries. For the most drastic
+patch by @nfrisby to speed up <code>TICKF</code>, full sync is speeding up by 7%.</p><p>The following plot shows that by caching the <code>TICKF</code> the <code>ChainSync</code> tip and the
+<code>VolatileDB</code> tip progress at the same rate.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-removed-stuttering-e49aa27a0e549f0195373203da971ba7.png" width="765" height="445" class="img_ev3q"></p><p>The plot below shows the speedup observed by caching the <code>TICKF</code> rule wrt the
+baseline.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-16-comparing-TICKF-batch-c6570a71c4a5d53b10cb7309d2cc742c.png" width="773" height="445" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>After addressing the PR comments, we merged PR <a href="https://github.com/input-output-hk/io-sim/pull/16" target="_blank" rel="noopener noreferrer">#16</a>, which implements
+the <code>MonadCatch</code> instance for <code>STM</code>. This extends the capability of our <code>io-sim</code>
+library, which is crucial for testing and simulating Cardano components PR #16
+closed <a href="https://github.com/input-output-hk/ouroboros-network/issues/1461" target="_blank" rel="noopener noreferrer">#1461</a>. This new feature was published as version <code>0.4.0.0</code>
+of <code>io-sim</code>.</p><p>We continued with our work fixing the <code>NoThunk</code> errors required for enabling
+nightly tests, with the help of <code>TVarInvariant</code> checks in <code>strict-stm</code> and
+<code>nothunks</code> libraries. We proposed fixes in <code>cardano-ledger</code> that took care of
+thunks that appeared in era translations (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3143" target="_blank" rel="noopener noreferrer">#3143</a>). The fixes will be
+integrated back into consensus when <code>cardano-ledger</code> approves and publish the
+changes introduced in <code>#3143</code>.</p><p>We added CI support for <code>lmdb-simple</code> (<a href="https://github.com/input-output-hk/lmdb-simple/pull/2" target="_blank" rel="noopener noreferrer">#2</a>). We currently test the build on
+a Linux environment only.</p><p>We got pending diffusion pipelining PRs (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3857" target="_blank" rel="noopener noreferrer">#3857</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3860" target="_blank" rel="noopener noreferrer">#3860</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3856" target="_blank" rel="noopener noreferrer">#3856</a>) merged, after rebasing and addressing feedback.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fostering-collaboration">Fostering collaboration<a class="hash-link" href="#fostering-collaboration" title="Direct link to heading">​</a></h3><p>@nfrisby finished a visualisation tool and outlined scripts for the Praos and
+Genesis explanation presentations. The idea is to produce a video that gives an
+overview of these protocols.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support">Support<a class="hash-link" href="#support" title="Direct link to heading">​</a></h3><p>We started working on caching the computation of the <code>TICKF</code> rule
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/4054" target="_blank" rel="noopener noreferrer">#4054</a>), since this was blocking our benchmarking work for
+Genesis. In addition, this issue has the Cardano community <a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">quite
+concerned</a>, so we are hoping the work done in caching the
+computation of the <code>TICKF</code> rule can help alleviating the growing block
+production delay on epoch switch.</p><p>We reviewed the block forge credential hotswapping PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/3800" target="_blank" rel="noopener noreferrer">#3800</a> from the
+networking team, which is intended for use in the adoption of P2P.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-02-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team continued its work on testing the
+UTxO HD prototype. We completed the era-transition and backing store tests, and
+the mempool tests are advancing at a steady pace. Regarding our work in the
+Genesis design, we continued our collaboration with the research and networking
+teams, and we continue investigating strategies for making the chain-sync
+jumping prototype faster.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We worked on state-machine tests for the mempool, and spotted potential bugs
+in the implementation. Investigation is ongoing.</li><li>We have a set of property tests for the backing store. We still need to
+incorporate the improvements to the LMDB cursor API that these tests
+made possible.</li><li>We merged the era-transition tests PR.</li></ul></li><li>Genesis: on track.<ul><li>Design work around Genesis continues in collaboration with researchers and
+the networking team.</li><li>We continued trying to improve the performance of the chain-sync jumping
+prototype. We gained additional insight on which parameters to tweak next.
+In spite of the baseline still being faster, the current prototype already
+achieves a significant speedup when compared to the naive approach of simply
+running full chain-sync with all peers.</li></ul></li><li>Tech debt: on track.<ul><li>We clarified a common source of confusion around VRF tie-breaking and
+cross-era chain selection.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We continued working on property-tests for the UTxO HD prototype. In particular
+we merged the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4073" target="_blank" rel="noopener noreferrer">era-transition tests
+PR</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">backing store property tests
+PR</a> has been
+reviewed. The next steps are:</p><ul><li>Improve error handling and command generation.</li><li>Add coverage testing to check that we are not failing to cover interesting
+test cases.</li></ul><p>The <a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">monadic cursor API</a>
+went through its first review round. The API is in a relatively stable state.
+This PR also unifies the <code>cborg</code> and <code>serialise</code>-based interfaces to LMDB
+operations. The next steps are:</p><ul><li>Write
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+state-machine tests for this API.</li><li>Adapt the changes in the serialisation interface in the backing store property
+tests. This will involve adding boilerplate code in consensus to make up for
+the removal of the <code>cborg</code>-based interface.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lsm-tree-implementation">LSM tree implementation<a class="hash-link" href="#lsm-tree-implementation" title="Direct link to heading">​</a></h2><p>We worked on the <a href="https://github.com/input-output-hk/ouroboros-network/issues/4121" target="_blank" rel="noopener noreferrer">LSM tree
+prototype</a>. In
+particular, we focused on tuning the LSM tree design to the different workloads
+that consensus has (eg syncing, normal node operation, etc).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Work on improving the chain-sync jumping performance is ongoing. In particular
+we compared the performance of different jump intervals, which, somewhat
+surprisingly, do not make a significant difference. In particular, we are seeing
+periodic &quot;plateaus&quot; where the chain-sync tip does not progress, but they are
+much longer for the prototype. Our hypothesis is that this seem to be due to a
+combination of the garbage collector (GC) pauses, and the actual time it takes
+the non-dynamo chain-sync peers to jump to the tip of the slot of the dynamo
+fragment.</p><p>In the coming weeks we will try to shorten these plateaus via a combination of
+tweaking GC options and less synchronisation in the CSJ governor.</p><p>The following plot shows the performance of the chain-sync jumping prototype
+using different jumping intervals. It compares the syncing progress by plotting
+the slots of adopted blocks against time. The baseline is still faster, however
+it is worth noting that the current prototype already achieves a significant
+speedup when compared to the naive approach of simply running full chain-sync
+with all peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-9fd0e0e080975cc6cfbe035731b4f38d.svg" width="998" height="445" class="img_ev3q"></p><p>The second plot shows the syncing progress sliced to a chosen ~5min interval,
+and includes, in addition to the slots of adopted blocks, the slots of the tip
+of the ChainSync fragment. This allows us to see how far ahead of the selected
+tip the CS dynamo is, i.e. how much room we have for BlockFetch not to get
+stalled. It shows periodic behaviour (due to the forecasting limit), and shows
+that the CS fragment tip is not progressing for significant periods
+(&quot;plateaus&quot;).</p><p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-02-csj-vs-baseline-sliced-77ff018af70191b4122b1e7cf56c79b8.svg" width="998" height="445" class="img_ev3q"></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><p>We <a href="https://github.com/input-output-hk/ouroboros-network/pull/4098" target="_blank" rel="noopener noreferrer">clarified</a> a
+common source of confusion around VRF tie-breaking and cross-era chain
+selection. This PR involved correcting potentially misleading names of
+VRF-related functions, and providing context for a particular VRF value is
+used for tie-breaking.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-18-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on adding property test for
+different aspects of the UTxO HD prototype: era transitions, mempool, and
+backing store. Thanks to these tests we were able to uncover a bug in the
+prototype. On the Genesis front, we benchmarked a different version of the
+ChainSync jumping prototype to try to improve its performance, but this did not
+result in any noticeable speedup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-status-report">High-level status report<a class="hash-link" href="#high-level-status-report" title="Direct link to heading">​</a></h2><ul><li>Finish the UTxO HD prototype: on track.<ul><li>We focused on increasing test coverage for the UTxO-HD prototype:<ul><li>We started implementing Cadano-eras transition property-tests.</li><li>We started implementing state-machine property-tests for the mempool.</li><li>We merged the mempool rewrite.</li><li>We started working on state-machine tests for the backing store. This
+uncovered a bug in the range-read implementation of the LMDB backing
+store.</li></ul></li></ul></li><li>Genesis: on track.<ul><li>We benchmarked a version of the Genesis ChainSync Jumping prototype that
+spreads out the ChainSync updates over a longer period of time. This did not
+result in any noticeable speedup.</li><li>We investigated the overhead introduced by non-ChainSync components, but no
+conclusions could be drawn from the benchmarks we ran.</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finish-the-utxo-hd-prototype">Finish the UTxO HD prototype<a class="hash-link" href="#finish-the-utxo-hd-prototype" title="Direct link to heading">​</a></h3><p>We focused on increasing test coverage for the UTxO HD prototype. We also merged
+the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">mempool
+rewrite</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="era-transition-property-tests">Era transition property tests<a class="hash-link" href="#era-transition-property-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4043" target="_blank" rel="noopener noreferrer">Cardano era transition property
+tests</a>,
+which are needed for making sure that the ledger tables get updated in the
+right way when we move from one era to the next. There are at the moment two
+important transitions.</p><ul><li>Byron to Shelley: where all the UTxO is transferred from in-memory Byron
+state (which has no tables) to the ledger tables of the Shelley state.</li><li>Shelley to Allegra: where the AVVM addresses must be deleted.</li></ul><p>We have tests for the Byron to Shelley transitions. We are working on adding
+the remaining ones.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="mempool-state-machine-tests">Mempool state-machine tests<a class="hash-link" href="#mempool-state-machine-tests" title="Direct link to heading">​</a></h4><p>We started implementing <a href="https://github.com/input-output-hk/ouroboros-network/issues/4044" target="_blank" rel="noopener noreferrer">state-machine property tests for the
+mempool</a>.
+The mempool is currently tested via pure property tests, and use a ledger
+state without tables. With the introduction of UTxO HD, testing the concurrent
+behavior of the mempool became of crucial importance (eg now we have to
+acquire locks to flush the backing store). In addition, we need to test a
+ledger state with tables. These needs led to the creation of a new set of
+property tests. In particular we aim to run parallel state-machine tests that
+exercise the mempool in a way similar to how the node would make use of it.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="backing-store-property-tests">Backing store property tests<a class="hash-link" href="#backing-store-property-tests" title="Direct link to heading">​</a></h4><p>We started working on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4081" target="_blank" rel="noopener noreferrer">state-machine tests for the backing
+store</a> that UTxO
+HD uses. The property tests uncovered errors in the range-reads implementation
+of the LMDB backing store. To facilitate fixing this bug, we made
+<a href="https://github.com/input-output-hk/lmdb-simple/pull/1" target="_blank" rel="noopener noreferrer">changes</a> to the Haskell
+LMDB bindings.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking-the-csj-prototype">Benchmarking the CSJ prototype<a class="hash-link" href="#benchmarking-the-csj-prototype" title="Direct link to heading">​</a></h3><p>Prompted by previous benchmarks showing significant improvements in sync time by
+using more capabilities, we implemented a way to spread out the ChainSync
+updates over a larger period instead of firing them all at the same time. This
+didn&#x27;t result in a noticeable speedup.</p><p>We also benchmarked the prototype with CSJ disabled (such that just the dynamo
+peer is running ChainSync, but e.g. BlockFetch still sees all peers) to rule
+out/confirm overhead by non-ChainSync (mainly BlockFetch) related components.
+This results in era-specific behavior (speed is like the prototype in Byron, but
+like the baseline in Shelley). This deserves a closer look in the future.</p><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><ul><li>Red: baseline</li><li>Green: CSJ prototype, 10 peers, jumps every 3000/f slots, jumps in clumps.</li><li>Blue: like Green, jumps are spread out.</li><li>Orange: variant with no jumping, to measure unrelated overhead.</li></ul><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-2-e23d2986ddef0a187df9ce336b2db116.svg" width="654" height="459" class="img_ev3q"></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-05-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-05T00:00:00.000Z" itemprop="datePublished">October 5, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the past two weeks, the consensus team worked on improving the
+performance of the ChainSync jumping logic, which is needed for Genesis. We also
+rewrote the implementation of the mempool in the UTxO HD prototype which solved
+the issues that prevented us from running system level benchmarks. Also on the
+UTxO HD front, we have an improved implementation of the sequence-of-differences
+(a crucial piece of UTxO HD), and we also elaborated a test sign-off list for
+the UTxO HD feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>With the latest implementation of ChainSync jumping we are closer to the
+baseline performance. In particular, the prototype seems to benefit from the
+extra concurrency provided by additional capabilities.</li><li>We rewrote the implementation of the mempool in the UTxO HD prototype. This
+rewrite was required due to performance problems we observed when running the
+<a href="https://github.com/input-output-hk/cardano-node/blob/master/Makefile#L51" target="_blank" rel="noopener noreferrer">workbench</a>.
+These performance problems prevented us from running system level benchmarks.
+The rewrite solved these issues. After the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4049" target="_blank" rel="noopener noreferrer">UTxO-HD: mempool
+rewrite</a> PR is
+merged, we will contact the Benchmarking team so that they run the system
+level benchmarks.</li><li>The implementation of sequences of differences based on anti-diffs was
+integrated into the UTxO HD prototype. It is pending
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4036" target="_blank" rel="noopener noreferrer">review</a> and
+we also need to run replay and syncing benchmarks to confirm that this will
+deliver a performance improvement, as observed in our micro-benchmarks.</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3944" target="_blank" rel="noopener noreferrer">The UTxO HD prototype
+inspection</a>
+resulted in a <a href="https://github.com/input-output-hk/ouroboros-network/issues/4045" target="_blank" rel="noopener noreferrer">list of
+tests</a>
+needed for consensus to consider the UTxO HD prototype as fully tested.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="additional-information">Additional information<a class="hash-link" href="#additional-information" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><p>Benchmarking setup: 50MBit/s, 50ms latency</p><ul><li>Red: baseline</li><li>Green: Current CSJ prototype, 10 peers, jumps every 3000/f slots.</li></ul><p>As ChainSync Jumping involves many concurrent network operations at every jump,
+we tried to run the node with 6 instead of the default 2 capabilties.</p><ul><li>Orange: baseline with 6 capabilities</li><li>Blue: CSJ prototype with 6 capabilities</li></ul><p>This diagram shows the respective syncing progress, starting at Genesis and
+continuing a good part into Shelley (with the dashed line indicating the
+Byron-to-Shelley transition).</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-bench-1-2c33ba45f44a086415e703fe8f0f7ad1.svg" width="654" height="459" class="img_ev3q"></p><p>Further work includes whether we can tune the prototype to better handle few
+capabilities, or to adapt the default number of capabilities (potentially just
+while syncing).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus/page/5"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/consensus/page/7"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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+distributed multi-node benchmarks in the UTxO HD feature branch. While this
+fixed the problems observed when running local benchmarks, it broke the
+<code>ThreadNet</code> tests due to concurrency issues. Therefore, we think it is wise to
+start redesigning the UTxO HD mempool integration.</li><li>We did several rounds of code review on the alternative implementation of
+diff-sequences required by the UTxO HD feature based on the idea of
+anti-diffs. This alternative implementation is close to being merged, and the
+next step is to integrate this to the UTxO HD branch, so that we can run
+ad-hoc replaying and syncing from scratch benchmarks and compare these with
+the baseline. The micro-benchmarks we elaborated for the alternative
+implementation show speedups of up to 4x, so we are optimistic about the
+performance of replaying and syncing from scratch benchmarks, however it is
+important to notice that <em>due to the nature of UTxO HD</em> we will still be
+slower than the baseline.</li><li>The final draft of the Genesis implementation specification is ready for
+review.</li><li>We implemented a prototype for the happy path of Genesis&#x27; ChainSync Jumping
+(CSJ). The prototype is slower than the baseline, however it is not the latest
+version of the prototype and the jump interval is very small.</li><li>Work on integrating Conway has <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971#issuecomment-1252524031" target="_blank" rel="noopener noreferrer">stopped</a> since
+priorities have changed.</li><li>We started work on benchmarking epoch-boundaries and epoch overhead
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4014" target="_blank" rel="noopener noreferrer">pr-4014</a>. To this end, we made use of a modified version of our
+<code>db-analyser</code> tool. We ran the new benchmarking setup using the Cardano
+mainnet chain, and we can see that block tick and application take
+substantially longer at epoch boundaries, although there are a couple of slots
+during an epoch in which these computations take more than normal. We notified
+the ledger team about these findings. We will use this modified version of
+<code>db-analyser</code> to investigate the epoch overhead.</li></ul><h1>Workstreams</h1><h2 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h2><ul><li><p>Spent quite some time investigating the root cause of the degradation in
+performance observed in the benchmarks. We run the <code>make forge-stress</code>
+benchmarks locally in order to debug this behavior.</p><ul><li><p>Transaction batching doesn&#x27;t make a notable difference in the outcome
+(considering we are using the in-memory backend).</p></li><li><p>The mempool batching implementation required asynchronous transaction
+validation which is a violation of the <code>LocalTxSubmission</code> protocol
+contract and therefore if we continued on that route, the impact would
+have been quite big.</p></li><li><p>The STM logic we implemented by using a <code>TMVar</code> for the mempool internal
+state was buggy and under certain circumstances it seemed to lock.
+Reverting the mempool internal state to be stored in a <code>TVar</code> seems to
+solve this problem.</p></li><li><p>The results we get after this change look almost identical to the ones
+from the baseline.</p></li></ul></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/3997" target="_blank" rel="noopener noreferrer">The anti-diff prototype (PR
+#3997)</a> has
+been reviewed and is close to being merged.</p><ul><li>A follow-up issue (<a href="https://github.com/input-output-hk/ouroboros-network/issues/4010" target="_blank" rel="noopener noreferrer">issue
+#4010</a>)
+to integrate the anti-diff prototype in the various <code>consensus</code> packages
+was created. A first version of the integration exists, and all tests
+pass. A next step is to get some indication of the &quot;real&quot; performance gain
+by profiling <code>db-analyser</code> (or <code>cardano-node</code>).</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h2><ul><li><p>Final draft of the Genesis implementation specification, now up for review.</p></li><li><p>Local benchmark setup for parameter tuning via the happy path ChainSync
+Jumping (CSJ) prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3987" target="_blank" rel="noopener noreferrer">Issue 3987</a>).</p><ul><li><p>Context: Our Genesis design requires us to check in with a large (~20)
+number of servers periodically while syncing. These servers are offered
+jump requests via the ChainSync protocol (hence the name), which they can
+accept or decline. If a peer declines, the Genesis rule allows us to
+determine whether a node actually has a better chain.</p></li><li><p>The &quot;happy path&quot; is when no peer declines a jump. We want this to have
+close to no overhead compared to status quo, i.e. syncing without Genesis.</p></li><li><p>We implemented a prototype for this happy path, and are now starting to
+test in various configurations (number of peers, latency, bandwidth) to
+tune the performance of ChainSync jumping, i.e. how complicated our logic
+of choosing when to jump needs to be.</p><p><strong>Example:</strong></p></li><li><p>Simulated connection: 50 MBit/s, 50ms latency</p></li><li><p>Jump interval: 3000 slots (on the low end, could be increased to up to
+<code>3k/f</code>)</p></li><li><p>Red: baseline (1.35.3), one peer in topology file</p></li><li><p>Blue: Preliminary version of our prototype, with 10 peers.</p><p><img loading="lazy" src="/cardano-updates/assets/images/happy-path-csj-prototype-prelim-5bbe2e2a20a2740e6238a7c73e618168.svg" width="654" height="459" class="img_ev3q"></p><p>It is slower by about ~30%, but it is not the latest version of the
+prototype, and the jump interval is very small, making CSJ more of a
+bottleneck.</p></li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li>Fix flakiness in ChainDB QSM tests (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3990" target="_blank" rel="noopener noreferrer">PR 3990</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-31-consensus">Consensus Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-08-31T00:00:00.000Z" itemprop="datePublished">August 31, 2022</time> · <!-- -->9 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dnadales.png" alt="Damian Nadales"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dnadales" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Damian Nadales</span></a></div><small class="avatar__subtitle" itemprop="description">Consensus Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>We did most of the heavy lifting required to integrate the Conway era.</li><li>We have property tests for the UTxO HD backing store API implementations. A
+possible bug was identified. Work is ongoing to make sure the property-tests
+cover all the relevant cases.</li><li>We implemented and benchmarked the &quot;anti-diff&quot; prototype to speed up the UTxO
+HD functionality. Results show a rough speedup of <code>4x</code> to <code>5.5x</code> across
+several scenarios. Note that: <a href="https://hackage.haskell.org/package/tasty-bench-0.3.2/docs/Test-Tasty-Bench.html" target="_blank" rel="noopener noreferrer">&quot;Data reported by <code>tasty-bench</code> is only of
+indicative and comparative significance.&quot;</a>.
+We are investigating additional performance improvements. The &quot;anti-diff&quot;
+prototype and benchmarks are still pending code review.</li><li>We elaborated a draft specification for the Genesis implementation and
+<code>ChainSync</code> jumping optimization.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li>Integration PR of the minimal Conway era (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3962" target="_blank" rel="noopener noreferrer">Issue #3963</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3971" target="_blank" rel="noopener noreferrer">PR
+#3971</a>).</li><li>Discussions with Ledger revealed possible sources of confusion about which
+data should be changed in the Conway era. As a result, a new technical debt
+issue was raised, which does not block the integration of the Conway era
+(<a href="https://github.com/input-output-hk/ouroboros-network/issues/3976" target="_blank" rel="noopener noreferrer">Issue #3976</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3954" target="_blank" rel="noopener noreferrer">Issue #3954</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/3954-backingstore-property-tests" target="_blank" rel="noopener noreferrer">branch</a>: The functionality of a
+backing store, which is the interface to the on-disk part of ledger state in
+UTxO-HD, is tested at a high level through the <code>OnDisk</code> tests. However, some
+functionalities remain untested, e.g., reads of ranges of keys. As such, we
+have implemented <code>quickcheck-state-machine</code> tests that exercise backing stores
+directly. The tests are reusable for different backing store implementations
+because the tests are implementation-agnostic: Any backing store that conforms
+to the backing store interface can be plugged into the tests. Work is still
+ongoing to label/monitor the tests, such that we can verify that interesting
+cases are being tested. Furthermore, a possible bug has been identified in the
+LMDB backing store with respect to range reads, though the bug has not been
+resolved yet.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/3946" target="_blank" rel="noopener noreferrer">Issue #3946</a>, <a href="https://github.com/input-output-hk/ouroboros-network/tree/jdral/CAD-4199-prototype-anti-diffs" target="_blank" rel="noopener noreferrer">branch</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/3882" target="_blank" rel="noopener noreferrer">PR #3882</a>: The
+&quot;anti-diff&quot; prototype proposes an alternative approach to keeping track of
+sequences (more specifically, <code>FingerTree</code>s) of diffs. These diff sequences
+are a component of the in-memory parts of the ledger state in UTxO-HD. Since
+the consensus code often requires the cumulative diff of a sequence of diffs,
+the current implementation &quot;caches&quot; cumulative diffs of each subtree in the
+diff sequence. This caching allows relatively fast reconstruction of the total
+cumulative diff, but this caching proved to incur a non-negligible cost: when
+we manipulate diff sequences through splits and appends, we force re-computing
+a logarithmic number of caches. This is problematic, since we often split and
+append in consensus: we split when we flush diffs to a backing store or when
+we roll back blocks, and we append when pushing blocks. The new approach
+should reduce the overhead of this caching.</p><p>We implemented micro-benchmarks for the &quot;anti-diff&quot; prototype: we
+first generate a sequence of commands (<code>Forward</code>, <code>Push</code>, <code>Flush</code>, or
+<code>Rollback</code>) through a simulation, after which we measure the performance of
+applying the commands to a diff sequence. In this context, <code>Forward</code> means
+forwarding of values through a diff, whereas <code>Rollback</code> means switching to
+a different fork by rolling back diffs/blocks and pushing new ones.
+Moreover, we compare the performance for the two implementations: the
+&quot;legacy&quot; approach, and the anti-diff approach.</p><p>Some preliminary results were positive, but we needed to revisit the
+benchmark&#x27;s configuration to obtain more definitive results. After a
+discussion with @dcoutts and the consensus team about this configuration
+(e.g., number of commands generated, choice of the security parameter <code>k</code>),
+the benchmarks should now be closer to the realistic setting. The following
+configuration specifies the default configuration that is used in the
+benchmarking code:</p><ul><li>Number of commands generated: <code>10_000</code></li><li>Security parameter <code>k</code>: <code>2160</code></li><li>Number of initial backing values: <code>100</code></li><li>Number of key-value pairs deleted by a push: <code>50</code></li><li>Number of key-value pairs inserted by a push: <code>50</code></li><li>Number of key-value pairs forwarded by a forward: <code>50</code></li><li>Probability of a large (in the range <code>[1000, 2000]</code>) rollback: <code>0.05</code></li><li>Probability of a small (in the range <code>[1, 10]</code>) rollback: <code>0.95</code></li><li>Order of commands:<ul><li>An equal number of forward and pushes.</li><li><code>1</code> flush every <code>10</code> pushes.</li><li><code>1</code> rollback every <code>100</code> pushes</li></ul></li></ul><p>Moreover, we run four benchmark scenarios:</p><ul><li>Default configuration</li><li>Without rollbacks</li><li>With only small rollbacks</li><li>Without rollbacks, larger flushes (<code>1</code> flush every <code>100</code> pushes)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="how-to-read-results">How to read results<a class="hash-link" href="#how-to-read-results" title="Direct link to heading">​</a></h3><p>Note: this section uses documentation from the
+<a href="https://hackage.haskell.org/package/tasty-bench" target="_blank" rel="noopener noreferrer">tasty-bench</a> package to
+explain how to read the results of running our benchmarks.</p><p>Running a benchmark scenario gives us the following (curated) output:</p><div class="language-text codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AntiDiff:                               OK (18.27s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  2.527 s ±  47 ms, 2.1 GB allocated, 544 MB copied, 2.2 GB peak memory, 0.23x</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">LegacyDiff:                             OK (32.73s)</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  10.829 s ± 148 ms, 6.8 GB allocated, 2.3 GB copied, 2.2 GB peak memory</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">...</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The output says that the first benchmark, which exercises the anti-diff
+prototype, was repeatedly executed for <code>18.27</code> seconds (wall-clock time),
+its predicted mean CPU time was <code>2.527</code> seconds and means of individual
+samples do not often diverge from it further than <code>± 47</code> milliseconds
+(double standard deviation). We also configure the RTS to collect GC
+statistics, which enables <code>tasty-bench</code> to estimate and report memory usage.
+This data is reported as per <code>RTSStats</code> fields: <code>allocated_bytes</code>,
+<code>copied_bytes</code> and <code>max_mem_in_use_bytes</code>. So, the output of the first
+benchmark says that a total of <code>2.1 GB</code> of memory was allocated, that a
+total of <code>544 MB</code> of memory were copied, and that the peak memory in usage
+was <code>2.2 GB</code>. We read the output for the second benchmark in the same way.</p><p>Furthermore, the benchmark compares the mean CPU times for
+both the anti-diff and legacy approaches: In this case, the mean CPU time
+for the anti-diff approach is <code>~0.23x</code> the mean CPU time for the legacy
+approach. Conversely, the mean CPU time for the legacy approach is
+<code>1 / 0.23 ~= 4.35x</code> the mean CPU time for the anti-diff approach. We will
+call <code>0.23x</code> the <em>improvement factor</em>. We will call <code>4.35x</code> the <em>speedup</em>.</p><p>Note that these improvement factors (and reported results) are subject to
+noise, randomness, the specific configuration parameters, and the whims
+of statistics. Data reported by <code>tasty-bench</code> is only of indicative and
+comparative significance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="results">Results<a class="hash-link" href="#results" title="Direct link to heading">​</a></h3><p>For each of the 4 scenarios, we list the results of running the anti-diff and
+legacy approaches 5 times. We run the benchmarks 5 times to get an indication
+of whether the results are similar across multiple runs. Furthermore, we
+calculate the accompanying <em>ranges</em> (if applicable) of improvement factors and
+speedups.</p><p>Note also the decrease in total bytes allocated and total bytes copied for
+the anti-diff approach compared to the legacy approach.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="default-configuration">Default configuration<a class="hash-link" href="#default-configuration" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>2.533 s (0.23x)</td><td>4.7 ms</td><td>2.1 GB</td><td>557 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.792 s</td><td>162 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>2.508 s (0.23x)</td><td>245 ms</td><td>2.1 GB</td><td>515 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>10.850 s</td><td>30 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>2.562 s (0.23x)</td><td>5.0 ms</td><td>2.1 GB</td><td>552 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>10.993 s</td><td>149 ms</td><td>6.9 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>2.168 s (0.22x)</td><td>5.3 ms</td><td>1.8 GB</td><td>434 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>9.976 s</td><td>39 ms</td><td>6.3 GB</td><td>2.0 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>2.527 s (0.23x)</td><td>47 ms</td><td>2.1 GB</td><td>544 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>10.829 s</td><td>148 ms</td><td>6.8 GB</td><td>2.3 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>[0.22, 0.23]</code></li><li>Speedup : <code>[1 / 0.23 ~= 4.35, 1 / 0.22 ~= 4.55]</code></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks">No rollbacks<a class="hash-link" href="#no-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.638 s (0.19x)</td><td>36 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>8.656 s</td><td>207 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.638 s (0.19x)</td><td>75 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.654 s</td><td>322 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.663 s (0.19x)</td><td>74 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.799 s</td><td>216 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.645 s (0.19x)</td><td>51 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.732 s</td><td>261 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.639 s (0.19x)</td><td>19 ms</td><td>1.4 GB</td><td>181 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.653 s</td><td>234 ms</td><td>5.7 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li>Improvement factor: <code>0.19</code></li><li>Speedup : <code>1 / 0.19 ~= 5.25</code></li></ul></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="only-small-rollbacks">Only small rollbacks<a class="hash-link" href="#only-small-rollbacks" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.833 s (0.18x)</td><td>36 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>10.362 s</td><td>867 ms</td><td>5.8 GB</td><td>1.6 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.696 s (0.19x)</td><td>30 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>8.822 s</td><td>106 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.702 s (0.19x)</td><td>44 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>8.906 s</td><td>147 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.701 s (0.19x)</td><td>47 ms</td><td>1.5 GB</td><td>185 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>8.949 s</td><td>197 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.677 s (0.19x)</td><td>55 ms</td><td>1.5 GB</td><td>186 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>8.856 s</td><td>177 ms</td><td>5.8 GB</td><td>1.5 GB</td><td>2.2 GB</td></tr></tbody></table><ul><li><p>Improvement factor: <code>[0.18, 0.19]</code></p></li><li><p>Speedup : <code>[1 / 0.19 ~= 5.25, 1 / 0.18 ~= 5.55]</code></p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="no-rollbacks-larger-flushes-every-100-pushes">No rollbacks, larger flushes (every 100 pushes)<a class="hash-link" href="#no-rollbacks-larger-flushes-every-100-pushes" title="Direct link to heading">​</a></h4><table><thead><tr><th>Name</th><th>Mean CPU time</th><th>2*Stdev (CPU time)</th><th>Total bytes allocated</th><th>Total bytes copied</th><th>Peak memory</th></tr></thead><tbody><tr><td>Run 1: AntiDiff</td><td>1.643 s (0.25x)</td><td>21 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.4 GB</td></tr><tr><td>Run 1: LegacyDiff</td><td>6.591 s</td><td>351 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.4 GB</td></tr><tr><td>Run 2: AntiDiff</td><td>1.616 s (0.25x)</td><td>47 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 2: LegacyDiff</td><td>6.520 s</td><td>232 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 3: AntiDiff</td><td>1.640 s (0.25x)</td><td>34 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 3: LegacyDiff</td><td>6.540 s</td><td>150 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr><tr><td>Run 4: AntiDiff</td><td>1.635 s (0.25x)</td><td>76 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.0 GB</td></tr><tr><td>Run 4: LegacyDiff</td><td>6.589 s</td><td>131 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.0 GB</td></tr><tr><td>Run 5: AntiDiff</td><td>1.628 s (0.25x)</td><td>19 ms</td><td>1.5 GB</td><td>196 MB</td><td>2.2 GB</td></tr><tr><td>Run 5: LegacyDiff</td><td>6.490 s</td><td>5.9 ms</td><td>4.0 GB</td><td>1.4 GB</td><td>2.2 GB</td></tr></tbody></table></li><li><p>Improvement factor: <code>0.25</code></p></li><li><p>Speedup : <code>1 / 0.25 ~= 4</code></p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="genesis">Genesis<a class="hash-link" href="#genesis" title="Direct link to heading">​</a></h3><ul><li>We elaborated a draft of the specification of the Genesis implementation and
+the ChainSync Jumping optimization. In particular, this includes a proof
+sketch that the latter preserves liveness and safety in all cases (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3964" target="_blank" rel="noopener noreferrer">Issue
+3964</a>).<ul><li>@nfrisby&#x27;s main realization during this sprint was that he had been
+focusing so far on the case where the selected chain is an extension of
+the intersection of our peers&#x27; ChainSync candidates.</li><li>This is the main case, ie an &quot;absorbing&quot; state, but it&#x27;s not the only
+case.</li><li>The new proof sketch begins by case splitting on that predicate, and
+that made the sketch quite a bit easier to follow.</li></ul></li><li>We continued working on the &quot;happy path&quot; <code>ChainSync</code> Jumping prototype (<a href="https://github.com/input-output-hk/ouroboros-network/issues/3960" target="_blank" rel="noopener noreferrer">Issue
+3960</a>).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We started working on the issues required to re-enable nightly CI runs..
+Nightly CI runs have far more lax time constraints, which gives the option to
+run significantly more property tests than in our regular CI. To this end, we
+merged a PR to easily adapt the number of tests globally (<a href="https://github.com/input-output-hk/ouroboros-network/pull/3947" target="_blank" rel="noopener noreferrer">PR
+#3947</a>).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/consensus">consensus</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/consensus/page/6"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;crypto&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Include MuSig2 description in cryptography handbook</li><li>kes_agent: Finilising test and CI. Working on KES binary</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Full Node Verifier merged <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started describing MuSig2 to include it as part of the cryptography handbook </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier with the goal of implementing SNARK verifier in Plutus. Implemented ad-hoc IPA verifier. Work progress in <a href="https://github.com/alexandroszacharakis8/halo2/tree/iquerejeta" target="_blank" rel="noopener noreferrer">this</a> fork.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>KES agent is ready:<ul><li>CI ready <a href="https://github.com/input-output-hk/kes-agent/issues/19" target="_blank" rel="noopener noreferrer">#19</a></li><li>Receipt confirmation message <a href="https://github.com/input-output-hk/kes-agent/issues/20" target="_blank" rel="noopener noreferrer">#20</a></li><li>KES agent binary ready <a href="https://github.com/input-output-hk/kes-agent/issues/21" target="_blank" rel="noopener noreferrer">#21</a></li><li>Control client implemented <a href="https://github.com/input-output-hk/kes-agent/issues/11" target="_blank" rel="noopener noreferrer">#11</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-secp-issue">SECP bindings Security Issue Report</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="security-issue-report-secp256k1-bug">Security Issue Report: SECP256k1 bug<a class="hash-link" href="#security-issue-report-secp256k1-bug" title="Direct link to heading">​</a></h2><p>Date Occurred: July 15, 2022
+Severity:  Potentially Very High if exploited on Mainnet
+Authors: Iñigo Querejeta Azurmendi</p><p>Date of Report: August 17, 2023</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="summary-of-issue">Summary of Issue<a class="hash-link" href="#summary-of-issue" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="criticality-level">Criticality Level<a class="hash-link" href="#criticality-level" title="Direct link to heading">​</a></h4><p>Actually low (since the issue was detected prior to deployment) but potentially very high if it had been deployed to mainnet
+Context</p><p>New SECP256k1 Plutus bindings were being introduced in order to support interoperability with other major chains, such as Bitcoin and Ethereum.  The intention was to deploy these as part of the Vasil hard-fork. The bindings were considered to be a low-security risk since the underlying library functions were well tested and had been deployed on other blockchains.
+How was the Issue Detected</p><p>The issue was detected via specific End-to-End tests that had been commissioned.  It was (accidentally) triggered on the Cardano Testnet before a fix could be deployed there.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="what-action-was-taken">What Action was Taken<a class="hash-link" href="#what-action-was-taken" title="Direct link to heading">​</a></h4><p>The Cardano Testnet was permanently halted, and new test environments were deployed (Preview and Pre-Prod).
+Fixes were applied to prevent the use of the primitives.
+A full security audit was carried out on the bindings.
+The rollout of the primitives was postponed to a new hard fork (Valentine)</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="potential-effect">Potential Effect<a class="hash-link" href="#potential-effect" title="Direct link to heading">​</a></h4><p>The potential effect was that an adversary might be able to craft invalid Plutus transactions to crash any node, requiring execution of the Cardano disaster recovery plan to revert to a safe state and bypass the transaction.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="actual-effect">Actual Effect<a class="hash-link" href="#actual-effect" title="Direct link to heading">​</a></h4><ul><li>Delay to the Vasil hard-fork</li><li>Temporary removal of SECP256k1 primitives</li><li>Additional hard-fork to introduce SECP256k1 primitives</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="ongoing-mitigations-needed-if-any">Ongoing Mitigations Needed, if any<a class="hash-link" href="#ongoing-mitigations-needed-if-any" title="Direct link to heading">​</a></h4><p>None</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="responsibility-for-mitigations">Responsibility for Mitigations<a class="hash-link" href="#responsibility-for-mitigations" title="Direct link to heading">​</a></h4><p>Core team</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description-of-incident">Detailed description of Incident<a class="hash-link" href="#detailed-description-of-incident" title="Direct link to heading">​</a></h3><p>New Plutus <strong>secp256k1</strong> cryptographic primitives for Plutus v2 failed to apply the necessary validity checks on the input data, meaning that the primitives could theoretically be used in an unsafe environment.  The vulnerability was present in recent node versions (1.35.0 onwards), including ones deployed to Cardano Testnet.</p><p>The problem was not in the deserialization functions of the underlying library (Bitcoin&#x27;s library) but rather that the Haskell functions that implemented the Plutus builtins were not calling them correctly.  In particular, the library functions were designed to take structured data as input. However, the Haskell FFI implementation that was produced for the Plutus builtins allowed a caller to pass in (possibly) unstructured data. There were no checks that these data were structured in the correct way.  This issue was detected during End-to-End testing.</p><ul><li><a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L518" target="_blank" rel="noopener noreferrer">This</a> is the ECDSA signature verification algorithm that was used. It takes a SECP256k1_pubkey as input. That type is an opaque type with an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1.h#L61" target="_blank" rel="noopener noreferrer">expected</a> structure: a parsed and valid public key.  It was not immediately obvious that structured data needed to be passed to allow the function to be used safely.</li><li>The same happened with the Schnorr <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_schnorrsig.h#L170" target="_blank" rel="noopener noreferrer">verification function</a>. It takes as input a SECP256k1_xonly_pubkey, which is again an <a href="https://github.com/bitcoin-core/secp256k1/blob/master/include/secp256k1_extrakeys.h#L10" target="_blank" rel="noopener noreferrer">opaque structure</a> that holds a parsed and valid public key.</li></ul><p>The FFI skipped checks over these structured keys and directly passed the raw bytes that were given as arguments. If an adversary were to pass in data that was not properly structured, then it could result in unexpected behavior of the library. This could perhaps translate into an adversary being able to crash the nodes that ran these functions.  All nodes in the network could be crashed by a single transaction that would then be executed repeatedly, so stalling the network until the disaster recovery process was initiated.</p><p>The fix was addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/289" target="_blank" rel="noopener noreferrer">this</a> PR. It consisted of using the external representation that the deserialization function expects and running the deserialization prior to signature verification.  This was audited by security experts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="recommendations">Recommendations<a class="hash-link" href="#recommendations" title="Direct link to heading">​</a></h3><ul><li>Check all new Plutus bindings for correct use.</li><li>Audit all new Plutus built-in bindings.</li><li>Continue to develop specific End-to-End tests for all new Plutus features.</li><li>Do not assume that any existing library functions are &quot;safe&quot;. Treat all external calls circumspectly.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: Analysis of Halo2 SNARK verifier to plan a plutus implementation</li><li>mithril: Full node verifier</li><li>musig2: Finalised the missing fuzz tests</li><li>kes_agent: engineer on PTO. Work halted </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Work on a mithril flaky test <a href="https://github.com/input-output-hk/mithril/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Keep working on Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Should be merged in the coming week.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Finalised the fuzz tests <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">#43</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Analysis of Halo2 verifier. Necessary for a future implementation of a plutus verifier.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Sidechains: First version of snark-based ATMS</li><li>mithril: Full node verifier</li><li>kes_agent: Keep progress, and prepare CIP and CPS</li><li>CIPs and community: Finishing BLS12-381 CIP and working on a KECCAK CIP</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes_agent">kes_agent<a class="hash-link" href="#kes_agent" title="Direct link to heading">​</a></h3><ul><li>KES Agent CIP/CSP. Preparing documents. Will become public in the future.</li><li>KES Agent testsuite (<a href="https://github.com/input-output-hk/kes-agent/issues/14" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/kes-agent/issues/14</a>)</li><li>RawBearer abstraction in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395</a>)</li><li>Maintaining required changes to cardano-base for KES Agent (<a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/317</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Final review of the implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a>.
+Included benchmarks and further tests.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Schnorr signature implemented</li><li>ATMS signature implemented</li><li>First benchmarks show that for the committe size we expect, we need 2^21 constraints. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cips-and-community">CIPs and community<a class="hash-link" href="#cips-and-community" title="Direct link to heading">​</a></h3><ul><li>Addressed some review comments in <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#PR506</a></li><li>Worked with the communityt on <a href="https://github.com/cardano-foundation/CIPs/pull/524" target="_blank" rel="noopener noreferrer">#PR524</a> to include Keccak as part of the next Plutus release.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: E2E tests for BLS bindings and KES agent </li><li>Sidechains: Implement ECC chip and Rescue hash primitives for ATMS</li><li>mithril: Full node verifier</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; blocked due to issue with windows&#x27; localSnocket. Trying to resolve.</li><li>Adapting cardano-base for direct memory transfers between mlocked RAM and file descriptors <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Above, blocked by the simplification of typeclasses <a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">#404</a>.</li><li>Provided e2e test cases to the testing team with aggregated signatures and schnorr signatures for the BLS bindings</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Implementation of Full Node Verifier <a href="https://github.com/input-output-hk/mithril/pull/939" target="_blank" rel="noopener noreferrer">#939</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/ecc" target="_blank" rel="noopener noreferrer">ECC chip</a> implemented for JubJub over BLS12-381</li><li><a href="https://github.com/input-output-hk/sidechains-zk/tree/master/prover/src/rescue" target="_blank" rel="noopener noreferrer">Rescue chip</a> implemented for hashing.</li><li>Currently working on Schnorr signature (which uses the above constraints)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/crypto/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;crypto&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: Include final tests for BLS signature. Further adaptations for KES agent. </li><li>Sidechains: Implement BLS and JubJub using upstream&#x27;s macros to merge these curves in halo2curves.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>RawBearer API in ouroboros-network-framework (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4395)" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/ouroboros-network/pull/4395)</a>; this is needed for KES Agent. Review ongoing.</li><li>Facilitate BLS test vectors in Haskell test suite (<a href="https://github.com/input-output-hk/cardano-base/pull/408" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/408</a>)</li><li>Add the SignKeyWithKES type to cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/389</a>)</li><li>Restructuring and simplifying the MLocking code in cardano-base (<a href="https://github.com/input-output-hk/cardano-base/pull/404" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/404</a>, <a href="https://github.com/input-output-hk/cardano-base/pull/405" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/405</a>), getting rid of the purpose-built MonadMLock etc. typeclasses in the process</li><li>Merging the DSIGN and DSIGNM APIs such that the same phantom type can be used to select both the pure and mlocked versions of the same DSIGN algorithm (<a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>)</li><li>Simplifying the KES API into a single KESAlgorithm typeclass, merging the KESSignAlgorithm class into it (this is possible due to the simplifications from #404). (Same PR as above: <a href="https://github.com/input-output-hk/cardano-base/pull/411" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-base/pull/411</a>).</li><li>Update CIP-0381 with new plutus built-in functions, <a href="https://github.com/cardano-foundation/CIPs/pull/506" target="_blank" rel="noopener noreferrer">#506</a>. In particular hash_to_curve now takes as input a secon input for the Domain Separation Tag (DST), and we limit to have a maximu size of 255 bytes. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Opened PR in halo2curves to include BLS12-381 and JubJub, <a href="https://github.com/privacy-scaling-explorations/halo2curves/pull/38" target="_blank" rel="noopener noreferrer">#38</a></li><li>Addition constraint over JubJub merged <a href="https://github.com/input-output-hk/sidechains-zk/pull/10" target="_blank" rel="noopener noreferrer">#10</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>cardano-base: New KES structure finally merged. Included additional tests to BLS, and including test vectors created with zkcrypto&#x27;s library.</li><li>KES agent: Reaching state of MVP. Rewriting KES agent networking code to use the Snockets abstraction.</li><li>Sidechains: Started implementing ECC chip of JubJub over BLS12-381.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">#255</a> finally merged 🎉</li><li>Additional tests for BLS bindings <a href="https://github.com/input-output-hk/cardano-base/pull/384" target="_blank" rel="noopener noreferrer">#384</a></li><li>Open PR for including test vectors created with <a href="https://github.com/zkcrypto/bls12_381" target="_blank" rel="noopener noreferrer">zkscrypto</a>&#x27;s library, <a href="https://github.com/input-output-hk/cardano-base/pull/397" target="_blank" rel="noopener noreferrer">PR#397</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Introducing the SignKeyWithPeriodKES wrapper type, which bundles a KES key with its corresponding KES period <a href="https://github.com/input-output-hk/cardano-base/pull/389" target="_blank" rel="noopener noreferrer">PR#389</a>.</li><li>Introducing the DirectSerialise API into cardano-base, which allows us to write mlocked memory directly to a file descriptor, without going through intermediate encodings stored on the GHC heap (which is a no-no due to secure forgetting requirements) <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">#317</a>.</li><li>Figuring out how to generalize the KES, DSIGN, and mlocking code in cardano-base such that it can run in IOSim</li><li>Rewriting KES agent networking code to use the Snockets abstraction, which gives us a platform-independent sockets layer (i.e., it will also work on Windows), and also allows us to run networked code in IOSim for testing purposes</li><li>Refactor MonadSodium into MonadMLock <a href="https://github.com/input-output-hk/cardano-base/pull/388" target="_blank" rel="noopener noreferrer">PR#388</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Started working on ECC chip for JubJub over BLS (problems still with the multiplication constraint)</li><li>Use macros used by PSE library to try and merge our fork of halo2curves into PSE&#x27;s repo</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Started looking into full-node verifier</li><li>cardano-base: BLS12-381&#x27;s PR merged. Creating test-vectors for verifying basic pairing properties.</li><li>KES agent: Blockers overcome. Reaching a first MVP level of the KES-agent.  </li><li>Sidechains: Included BLS12-381 &amp; JubJub to halo2curves</li><li>MuSig2: Final modifs to C version.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Started designing how a full-node verifier would work. Issue comming in the next couple of weeks. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch merged <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. </li><li>Testing strategy for BLS bindings:<ul><li>Test-vectors for Groth16, and simple BLS signatures ready.</li><li>Test-vectors with different library, and created by different engineer. </li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Resolved issues of circular dependency</li><li>Got rid of separate DSIGN and DSIGNM, we now have DSIGN over mlocked keys, but the phantom type is the same.  </li><li>Opened a PR for raw bearer branch in ouroboros network <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">PR4395</a></li><li>Resolved a bug where the agent node did not properly closed connections</li><li>Updated version of <a href="https://github.com/input-output-hk/io-sim/pull/70" target="_blank" rel="noopener noreferrer">IOSim</a> allowed us to finish a first version of KES agent.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/1ccf987b772dcfaa3c1e3439a4a28f23fcf07c7a" target="_blank" rel="noopener noreferrer">BLS12-381</a> curve to our branch of halo2curves</li><li>Included <a href="https://github.com/iquerejeta/halo2curves/commit/3f20edb2ed112733a0a0986b0a0386c1b9bc439f" target="_blank" rel="noopener noreferrer">JubJub</a> to our branch of halo2curves </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Minor reorg <a href="https://github.com/input-output-hk/musig2/pull/42" target="_blank" rel="noopener noreferrer">PR#42</a></li><li>Started including fuzz testing for deserialisation <a href="https://github.com/input-output-hk/musig2/pull/43" target="_blank" rel="noopener noreferrer">PR#</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: RFP finished. Code ready for audit.</li><li>cardano-base: BLS12-381&#x27;s PR approved, only blocker is Windows&#x27; CI. Preparing extensive testing strategy together with Plutus and Testing teams.</li><li>KES agent: Working on a desing on how to use IO sim in order to allow for proper network simulation testing.</li><li>Sidechains: Preparing proving system to use the curves needed for main-net PoC.  </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Merged <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a></li><li>RFP for crypto audit ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch approved <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a>. Blocker is Windown&#x27;s CI. Working on it</li><li>Testing strategy for BLS bindings:<ul><li>Preparing test-vectors for Groth16, and simple BLS signatures</li><li>Finding community projects to help write their use cases</li><li>Designing AC, and expected tests for higher levels of development (Plutus team, E2E tests, etc)</li></ul></li><li>Wrote <a href="https://github.com/input-output-hk/blogpost_breaking_ed25519_vrf/blob/main/blog.md" target="_blank" rel="noopener noreferrer">blogpost</a> on how using the same key for ed25519 and VRF completely breaks the security of both systems </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Started integration of sockets interface used in consensus</li><li>Use that for de/ser</li><li>Resolving problems with block memory in IOSim. Can&#x27;t use withForeignPtr in IOSim</li><li>Results in having to parametrise for IOSim in KES and DSIGN for testing</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><ul><li>Prepared an API for proof generation in sidechains, with it&#x27;s C API for integration with JVM languages.</li><li>Design document and start interacting with researchers for concrete instantiation of SNARK-based ATMS.</li><li>EdDSA over JubJub ready</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Updated KES crate to force user to allocate buffer of bytes for the key. Include proper testing for batch mtree opening and STM batch verify. Progressed with RFP for audit.</li><li>cardano-base: BLS branch is now ready for review. We are workign forward its merge. </li><li>KES agent: time off of part of the team, but in general continuing with the adaptation of the KES agent with consensus codebase.</li><li>Sidechains: We are exploring and starting discussion on how sidechains could leverage BLS12-381 bindings for SNARKs</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Bumped to version <a href="https://crates.io/crates/kes-summed-ed25519/0.2.0" target="_blank" rel="noopener noreferrer">0.2.0</a> the implementation of KES. Redesigned the representation of the secret key to allow user to allocate a buffer using <code>mlock</code>.</li><li>Opened <a href="https://github.com/input-output-hk/mithril/pull/783" target="_blank" rel="noopener noreferrer">PR#783</a> to update dependency</li><li>Improved testing for batch opening of mtree, <a href="https://github.com/input-output-hk/mithril/pull/773" target="_blank" rel="noopener noreferrer">PR#773</a></li><li>Improved testing for batch verification of STM sigs <a href="https://github.com/input-output-hk/mithril/pull/774" target="_blank" rel="noopener noreferrer">PR#774</a></li><li>RFP for crypto audit almost ready.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>BLS12-381 branch finally ready for review <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><p>Team off for one week. Other progress:</p><ul><li>Learning about raw direct-bearer abstraction. An interface for sockets in consensus.</li><li>use that for direct ser/deser</li><li>written those syntaxes for ouroboros (coming PR)</li><li>the kes agent will depend on that. 	</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sidechains">Sidechains<a class="hash-link" href="#sidechains" title="Direct link to heading">​</a></h3><p>Progress with familiarisation of Halo2 library to write circuits.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/crypto"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/crypto/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;crypto&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: Helper functions finished. Continue preparing a RFP for an audit of mithril&#x27;s core library (decided to add audit of KES). Design proposal for viable registration.</li><li>cardano-base: Praos to PraosBatchCompat ready. KES secure forgetting finished, but holding merge for delivery strategy (breaking changes). Tested real world SNARK verification on plutus.</li><li>KES agent: using snockets and making things testable in IOSim</li><li>MuSig2: started implementation in rust.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Transmute helpers merged <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. Progressing with description of octopus algorithm. Included KES in scope. </li><li>We are working in a modification of KES to require caller to allocate the secret key buffer.</li><li>Proposed a solution for signer registration of <a href="https://github.com/input-output-hk/mithril/wiki/Mithril-registration-procedure#cost" target="_blank" rel="noopener noreferrer">Mithril</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Progressing with BLS12-381. Worked with plutus team to have a plutus script verifying a Groth16 <a href="https://github.com/input-output-hk/plutus/tree/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks" target="_blank" rel="noopener noreferrer">proof</a>.<ul><li>Results are promising, with using only 23% of the execution budget to verify a realistic proof. </li><li>Next step is to build a real world use case (and not use a dummy proof). Projects being considered are Sidechains, Hydra or Mithril.</li></ul></li><li>KES secure forgetting merge is being held off, due to breaking changes. We are considering handling several branches in cardano-base for this.</li><li>Conversion finally merged <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Figuring out how to use sockets to write directly into the file descriptor. Digging into the sockets implementation</li><li>Figuring out how to go from fake file descriptor to write the raw bytes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Started implementing MuSig2 in Rust using the Ristretto prime order group. Still experimental.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We are creating helper functions to single out the usage of unsafe to facilitate auditing. We are also preparing a RFP for an audit of mithril&#x27;s core library. Exploring future paths of mithril. </li><li>cardano-base: Decision of whether to continue with BLS12-381 or switch curves. Conversion Praos to PraosBatchCompat ready, as well as KES secure forgetting.  </li><li>KES agent: using snockets and making things testable in IOSim </li><li>MuSig2: GH actions updated for checking the files whether they end with an empty line. Also, we reorganized the library.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Given that removing the usage of transmute really affects the benchmarks, we decided to group all unsafe functions to facilitate auditing <a href="https://github.com/input-output-hk/mithril/pull/722" target="_blank" rel="noopener noreferrer">PR#722</a></li><li>We have progressed with the RFP document for the mithril-stm library. We are documenting the differences with respect with the original paper.</li><li>We are exploring possible paths of how mithril could be used &#x27;as-a-service&#x27;. Other projects such as sidechains or Catalyst would benefit of such a service. We are at a very early stage of brainstorming how it could work.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>There has been a very thorough discussion with potential users of the BLS12-381 bindings if that is the best curve. We have considered alternatives such as Pasta curves, Pluto-Eris or BLS12-377, and considering it&#x27;s trade-offs. Seems that the most interesting curve to have on main-net is still 381. </li><li>The team is gaining expertise in SNARKs to be able to experiment with them, and conclude whether the bindings will allow for SNARK verification on main-net in a timely manner.</li><li>The update VRF <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a> is finally merged, and we are ready to merge <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a>, which implements conversion functions from the compatible types between Praos and PraosBatchCompat.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>Use of snockets to send the data directly from the socket to secure memory. </li><li>We realized that in order for the DirectSerialise / DirectDeserialise classes to work against IOSim, we have to generalize a bunch of additional primitives</li><li>Our plans are to: (1) Split up MonadSodium into separate typeclasses, each capturing a more sensible concern; (2) Rename those typeclasses to something that reflects their nature better.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><p>The GitHub Action <a href="https://github.com/fernandrone/linelint" target="_blank" rel="noopener noreferrer">linelint</a> is used to check the files.</p><ul><li>A new job for linting is added to the file <code>/.github/workflows/ci.yml</code>. The rules are configured in the file <code>/.github/workflows/.linelint.yml</code>. Some files from the configuration of <code>libsecp</code> were failing, so in the rules in <code>.linelint.yml</code> the failing files are denoted to be ignored by the linter.</li><li>Folders are reorganized. We created a folder to handle the example. This folder includes the <code>examplemusig2.c</code>, a distinct <code>config.h</code>, and <code>helper.c</code>. The example is enhanced by implementing the functions in the helper for the configuration given in <code>config.h</code>.  The number of messages is different than the tests. The example is made more generic to run with a loop.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The open fronts that the crypto team is working on are:</p><ul><li>Mithril: We explored whether some uses of <code>transmute</code> could be removed, but it resulted in considerable regression.  </li><li>cardano-base: Some issues with Nix are blocking merge of VRF update. BLS12-381 benchmarks where quite satisfactory. Next steps will be defined by cryptography strategic decision. </li><li>KES agent: An inconsistency between <code>contra-tracer</code> available in hackage and the one in cardano-haskell delayed our progress. Now we are adapting PRs to the <code>contra-tracer</code> used by consensus. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We removed the usage of transmute in mithril-core (and exchanged it with ser/deser, as unfortunately there is no other way with the library we currently use). However, the benchmarks showed an important regression - ~30% worse on average <a href="https://github.com/input-output-hk/mithril/pull/675" target="_blank" rel="noopener noreferrer">PR#675</a>. We decided to keep transmute, but instead group all its usage in helper functions, to facilitate auditing. </li><li>We are writing a RFP for the audit of the core library. </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>A problem with Nix is blocking merge of <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>Plutus team ran <a href="https://github.com/input-output-hk/plutus/blob/kwxm/BLS12_381/prototype/plutus-benchmark/bls-benchmarks/Main.hs" target="_blank" rel="noopener noreferrer">benchmarks</a> of BLS12-381 built-ins. The results are satisfactory, and while we have yet not implemented SNARK verification in plutus, it all seems to point that we&#x27;ll be able to verify some proofs in a single script execution.</li><li>Team is fully digesting the Plonk paper. </li><li>There&#x27;s been a lot of discussions (with internal and external projects) regarding pairings in plutus, and what elliptic curve should be used.  </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>A little unforseen delay has been caused by a mismatch in the use of <code>contra-tracer</code>. The one in hackage and that in cardano-haskell are not compatible. Unfortunately, for secure forgetting we use that of hackage, and now realised. We are <a href="https://github.com/input-output-hk/cardano-base/pull/255/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">doing the change</a>, but still the CI is not happy.</li><li>The <a href="https://github.com/input-output-hk/cardano-base/pull/317/commits/39b2d9473aa296976825248360a73cf066065431" target="_blank" rel="noopener noreferrer">same</a> was needed for the KES agents prerequisites <a href="https://github.com/input-output-hk/cardano-base/pull/317" target="_blank" rel="noopener noreferrer">PR#317</a>.</li><li>We&#x27;ve started working with the agent itself again, upgrading the cardano-base dependency and adding ouroboros-network-framework dependency</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-06-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-06T00:00:00.000Z" itemprop="datePublished">January 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: The API features (error handling) has been merged. </li><li>Mithril: We update the KES library and published it in crates.io. Similarly, we merged batch verification of STM signatures.</li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. </li><li>KES agent: We keep progressing with KES secure forgetting implementation.</li></ul><p>We also started working in the cryptography engineering handbook, which will be a cross team effort.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>Merged the more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>Adapted KES library so that sk contains its corresponding period, making key handling easier. Avoid making unnecessary copies of the KES key. Expose function to get associated period. All included in <a href="https://github.com/input-output-hk/kes/commit/9de00835ed354cbb8d37838f6cee57930ea9fd3d" target="_blank" rel="noopener noreferrer">Version 0.1.1</a>, which was published in <a href="https://crates.io/crates/kes-summed-ed25519" target="_blank" rel="noopener noreferrer">crates.io</a>. </li><li>Updated new KES format to mithril library <a href="https://github.com/input-output-hk/mithril/pull/674" target="_blank" rel="noopener noreferrer">PR 674</a></li><li>We implemeneted batch verification of stm signatures, which improves the benchmarks for mithril chain-sync <a href="https://github.com/input-output-hk/mithril/pull/531" target="_blank" rel="noopener noreferrer">PR 531</a></li><li>We keep progressing on reducing the use of <code>transmute</code> in <code>mithril-stm</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. We are only missing nix merge of <a href="https://github.com/input-output-hk/iohk-nix/pull/520" target="_blank" rel="noopener noreferrer">PR#520</a> and the updates on VRF will be merged.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We keep progressing in the secure forgetting PR. Added NoThunks tests, error hasndling to detect when mlocking fails, resolved bugs due to incorrect usage of mlocked memory and wrote more efficient tests <a href="https://github.com/input-output-hk/cardano-base/pull/255#issuecomment-1362601518" target="_blank" rel="noopener noreferrer">PR#255</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cryptography-handbook">Cryptography handbook<a class="hash-link" href="#cryptography-handbook" title="Direct link to heading">​</a></h3><p>We have made available the (temporary) cryptography handbook <a href="https://input-output-hk.github.io/cryptography_spec/" target="_blank" rel="noopener noreferrer">https://input-output-hk.github.io/cryptography_spec/</a>, and included the description of some primitives (Ed25519, KES and VRF). This is an ongoing effort, and we plan on further expanding the list of available primitives.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We were blocked with a CI issue, that we finally resolved. Similarly, we merged the redesig of the API to mantain consistency. </li><li>Mithril: Merged the reformat of the signle signature. Similarly, we started working in ensuring KES implementation in rust is safe. </li><li>cardano-base: VRF and BLS are still waiting to be merged, as we have some problems with the CI. Moreover, we started experimenting how rust can be included in the cardano-base code-stack. </li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>[Still in progress]<!-- --> We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We merged the API redesig <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li><li>We were blocked for a while with a CI issue, for which we are currently simply using a simpler version of Ubuntu. We&#x27;ll probably circle back to this in the future <a href="https://github.com/input-output-hk/musig2/pull/36" target="_blank" rel="noopener noreferrer">PR#36</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>We merged the individual signature <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li><li>We are modifying important parts of the KES mplementation to guarantee there are no unnecessary copies during Ser/Deser (<a href="https://github.com/input-output-hk/kes/commits/master" target="_blank" rel="noopener noreferrer">kes repo</a>) </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>Nothing new to report. Still working in merging these PRs. </li><li>We started experimenting on how we can use cabal-pack to create haskell libraries out of rust libraries, and how this would affect the cardano-base fork. We encountered what seems to be a <a href="https://gitlab.haskell.org/ghc/ghc/-/issues/22564" target="_blank" rel="noopener noreferrer">bug in GHC</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Fixed a &#x27;use-after-free&#x27; bug in the KES agent.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/crypto/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/crypto/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;crypto&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-25-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The four open fronts that the crypto team is working on are:</p><ul><li>MuSig2: We are almost ready to reach a point where the MuSig2 library is ready for usage by the Hydra team. </li><li>Mithril: We started to think how Mithril-core can be designed such that it can be leverage by contexts where the verifiers run full nodes</li><li>cardano-base: The VRF and BLS branchs are still open and in progress</li><li>KES agent: We keep progressing with KES secure forgetting implementation as well as the KES agent. </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="musig2">MuSig2<a class="hash-link" href="#musig2" title="Direct link to heading">​</a></h3><ul><li>We redesigned the library so that MuSig2 lib users don&#x27;t need to be aware of the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/31" target="_blank" rel="noopener noreferrer">PR#31</a></li><li>We are introducing a more granular error handling mechanism <a href="https://github.com/input-output-hk/musig2/pull/33" target="_blank" rel="noopener noreferrer">PR#33</a></li><li>We rethought the API and made it more consistent with the underlying secp256k1 library <a href="https://github.com/input-output-hk/musig2/pull/35" target="_blank" rel="noopener noreferrer">PR#35</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril">Mithril<a class="hash-link" href="#mithril" title="Direct link to heading">​</a></h3><ul><li>The mithril crates in general will be published in crates.io, and we adapted the core library&#x27;s README <a href="https://github.com/input-output-hk/mithril/pull/616" target="_blank" rel="noopener noreferrer">PR#616</a> </li><li>We are modifying the individual signature to not contain the VK and stake. This was not necessary, as the current design requires the aggregator of Mithril certificates to know this information <a href="https://github.com/input-output-hk/mithril/pull/620" target="_blank" rel="noopener noreferrer">PR#620</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-base">cardano-base<a class="hash-link" href="#cardano-base" title="Direct link to heading">​</a></h3><ul><li>We&#x27;ve been still working in updating to the latest version of the VRF. In particular we modified the cbits to use the latest version of libsodium stable (1.0.18) <a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#341</a></li><li>SKs, VKs and VRF outputs will be compatible across the different versions. We are implementing conversion functions for simple transitions <a href="https://github.com/input-output-hk/cardano-base/pull/344" target="_blank" rel="noopener noreferrer">PR#344</a></li><li>Benchmarks on pairing built-ins have already started, so we were finalising some CI concerns and final remarks on the BLS PR, so that it can be merged as soon as we have green light from plutus <a href="https://github.com/input-output-hk/cardano-base/pull/266" target="_blank" rel="noopener noreferrer">PR#266</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h2><ul><li>We keep progressing in the secure forgetting PR and resolving some bugs on memory handling <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR#255</a></li><li>Increasing the test framework to make sure concurrency is properly treated by the KES Agent, for which we are including refcounted references. General progress in the implementation.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The SECP primitives AC has been met, and the test-vectors <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR</a> has been merged. Another of the main short-term goals is to implement KES secure forgetting. In the past week the mempool <a href="https://github.com/input-output-hk/cardano-base/pull/336" target="_blank" rel="noopener noreferrer">PR</a> has been merged, and we&#x27;ve adapted the KES secure <a href="https://github.com/input-output-hk/cardano-base/pull/255" target="_blank" rel="noopener noreferrer">PR</a> to the new mempool design. On top of this, we are working in updating the VRF batch compat version to use the audited version of the libsodium fork (<a href="https://github.com/input-output-hk/cardano-base/pull/341" target="_blank" rel="noopener noreferrer">PR#</a>). Finally, we&#x27;ve &#x27;cleaned&#x27; our libsodium fork, and we directly fork upstream, rather than forking Algorand&#x27;s fork. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>With the AC met, there was no more blockers from crypto to release the node tag with the SECP primitives. We are now working closely with dQuadrant to to implement some E2E tests with an actual bridge implementation.  </li><li>We previously had a C implementation of a memory pool for usage in KES secure forgetting. After a discussion with Alexey, we decided to use his implementation of a mempool in Haskell. We are working in adapting KES Secure forgetting to use this Haskell mempool. </li><li>In parallel, we keep progressing on the <a href="https://github.com/input-output-hk/kes-agent" target="_blank" rel="noopener noreferrer">KES agent</a></li><li>VRFBatchCompat was deactivated due to a lack of an external audit. This audit was finished a few weeks back, and we are updating cardano base to use this new librar. In particular, this library implements the latest changing version of the VRF draft (13, which seems to remain stable), and links to the libsodium fork which implements batch verification. </li><li>Our libsodium fork now links directly to upstream libsodium.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-27-crypto">Crypto Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The crypto team is primarily focusing in enabling SECP primitives, and preparing the KES agent. We are close to
+meeting the <a href="https://github.com/input-output-hk/cardano-base/issues/315" target="_blank" rel="noopener noreferrer">acceptance criteria</a> in cardano-base,
+which lacks some editorial comments on the style of dQuandrant&#x27;s PR, the inclusion of one additional test, and
+we are good to mark it as done. For the KES agent, we are still iterating over the best design of the solution,
+but also progressing on the implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp-built-ins">SECP built-ins<a class="hash-link" href="#secp-built-ins" title="Direct link to heading">​</a></h3><ul><li>(missed last two weeks update) Audit was succesfully completed by bCryptic, and some minor changes where addressed in <a href="https://github.com/input-output-hk/cardano-base/pull/313" target="_blank" rel="noopener noreferrer">PR 313</a></li><li>CIP-0049 was addressed in the editors meeting, and <a href="https://github.com/cardano-foundation/CIPs/pull/250" target="_blank" rel="noopener noreferrer">PR 250</a> was merged</li><li>The unit-tests <a href="https://github.com/input-output-hk/cardano-base/pull/320" target="_blank" rel="noopener noreferrer">PR 320</a> is opened. Some editorial concerns still need to be addressed, and an additional (negative) test has been requested for addition.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="kes-agent">KES agent<a class="hash-link" href="#kes-agent" title="Direct link to heading">​</a></h3><ul><li>We were working in investigating how to send OpCerts to KES agents, but turns out to be not necessary. OpCerts can be stored on-disk, so the agent does not need to be aware of them.</li><li>We are redesigning the architecture. Instead of connecting the control server to the agent, and then the latter to the node, we are directly connecting the control server to the node, and the latter to the agent(s).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/crypto">crypto</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/crypto/page/3"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>14 posts tagged with &quot;db-sync&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-09-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-09T00:00:00.000Z" itemprop="datePublished">November 9, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created new tag <code>sancho-2-2-0</code>, which integrates missing Conway feautures and some minor fix
+tags <code>sancho-2-1-0</code>, <code>sancho-2-0-1</code>.
+We have completed the initial implementation for the bootstrap instance objective.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Add a new <code>--disable-gov</code> flag which disabled Conway ferautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1558" target="_blank" rel="noopener noreferrer">#1558</a></li><li>Fix of the committee key size
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1544" target="_blank" rel="noopener noreferrer">#1544</a></li><li>Workaround a ledger issue with unregistered pools
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1542" target="_blank" rel="noopener noreferrer">#1542</a></li><li>Implemented a mechanism that loads the UTxO from the ledger resulting is way faster syncs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1539" target="_blank" rel="noopener noreferrer">#1539</a></li><li>Rename offline to offchain
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1533" target="_blank" rel="noopener noreferrer">#1533</a></li><li>Transfer existing tests to Conway era
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1529" target="_blank" rel="noopener noreferrer">#1529</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1547" target="_blank" rel="noopener noreferrer">#1547</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-14T00:00:00.000Z" itemprop="datePublished">September 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have created a DBSync tag <code>sancho-1-1-0</code> which can follow sanchonet. Also
+the team has ran a number of benchmarks and tests for the new options/flavours of DBSync
+and prepared a blogpost which summorises them, for downstream components.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integration of node-8.3.x and support for Sanchonet on Conway
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1498" target="_blank" rel="noopener noreferrer">#1498</a></li><li>Simplifications of new feautures
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1496" target="_blank" rel="noopener noreferrer">#1496</a></li><li>Makes it impossible to restart DBSync with different schema options and adds
+tests for them
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>CI fixes
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1494" target="_blank" rel="noopener noreferrer">#1494</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1491" target="_blank" rel="noopener noreferrer">#1491</a></li><li>Prepared a blogpost about different DBSync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/blog/blog/blog.pdf" target="_blank" rel="noopener noreferrer">blog</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-17-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-17T00:00:00.000Z" itemprop="datePublished">August 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have integrated many new Conway feutures and allow db-sync to sync sanchonet.
+We also continued testing and improving the new db-sync options.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Conway integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Support for Sanchonet
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1476" target="_blank" rel="noopener noreferrer">#1476</a></li><li>Stake distribution is computed earlier
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Deposit ledger events are now used. This reduces the db queries and makes syncing faster
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1484" target="_blank" rel="noopener noreferrer">#1484</a></li><li>Testing new db-sync options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1466" target="_blank" rel="noopener noreferrer">#1466</a></li><li>Added support for ghc-9.6
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1479" target="_blank" rel="noopener noreferrer">#1479</a></li><li>Tech debt: improve exceptions
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1471" target="_blank" rel="noopener noreferrer">#1471</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-04-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-04T00:00:00.000Z" itemprop="datePublished">July 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2 and tested</li><li>Many devx issues resolved</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have improved and validated the design for the Conway integration in db-sync</li><li>Improved the initial integration of the UTxO-HD feauture branches which are under test</li><li>Prepared a new release 13.1.1.3 which supports node 8.1.1
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1455" target="_blank" rel="noopener noreferrer">#1455</a>.</li><li>This also fixes a bug
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1451" target="_blank" rel="noopener noreferrer">#1451</a></li><li>Added new tests to the new tx_out options
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a></li><li>Fixed a chronic issue in db-sync related to exception handling and concurrency
+This fixes many other issues and simplifies the logic in db-sync
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1447" target="_blank" rel="noopener noreferrer">#1447</a></li><li>A number of fixes and improvements in ci, docker, devx, docs
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1436" target="_blank" rel="noopener noreferrer">#1436</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1442" target="_blank" rel="noopener noreferrer">#1442</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1448" target="_blank" rel="noopener noreferrer">#1448</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1452" target="_blank" rel="noopener noreferrer">#1452</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We&#x27;ve made progress in all high level objectives</p><ul><li>CIP-1694 integration design</li><li>UTxO-HD integration proof of concept</li><li>schema migrations with a focus on speeding up frequent queries is part of release 13.1.1.2</li><li>A new hire will help us with devx issues.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have an initial design for the Conway integration in db-sync</li><li>The initial UTxO-HD integration resulted in a requested feuture that
+the consensus team is working on
+<a href="https://github.com/input-output-hk/ouroboros-consensus/issues/88" target="_blank" rel="noopener noreferrer">#88</a>.</li><li>Added two optional migrations that speed up querying UTxO
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1416" target="_blank" rel="noopener noreferrer">#1416</a></li><li>Work on improving the above feauture by adding tests and fixing tech debt
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1429" target="_blank" rel="noopener noreferrer">#1429</a><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1419" target="_blank" rel="noopener noreferrer">#1419</a></li><li>Fixed issue with ada_pots being wrong
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/1ad4521a5601e8e98dc06bba2826d6b2f9b4fcf4</a></li><li>Added a process which fixes in place scripts with wrong CBOR serialisation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-db-sync/pull/1407/commits/8792f72e2485b320de26c02dacc4d504d377ba17</a></li><li>Prepared a tag <a href="https://github.com/input-output-hk/cardano-db-sync/releases" target="_blank" rel="noopener noreferrer"><code>13.1.1.2</code></a>
+which is tested and ready to release. It contains many of the above.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/db-sync/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>14 posts tagged with &quot;db-sync&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-01-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-01T00:00:00.000Z" itemprop="datePublished">May 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Prepared a schema change which is expected to speed up queries and help clients
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1389" target="_blank" rel="noopener noreferrer">#1389</a>.</li><li>Ran a big number of benchmarks on the above to evaluate if this change is reasonable.</li><li>Performance optimization related to rewards
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1382" target="_blank" rel="noopener noreferrer">#1382</a></li><li>Using the cache in more places to reduce recourses usage
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Evaluated risks related to UTXO-HD integration</li><li>Worked on a feauture request to split the <code>tx_out</code> to an address table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1396" target="_blank" rel="noopener noreferrer">#1396</a></li><li>Worked on another feauture request to prune the consumed entries from the <code>tx_out</code> table
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1398" target="_blank" rel="noopener noreferrer">#1398</a></li><li>Prepared for CIP-1694 integration</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-23-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team worked in performance enhancements issues, on providing new db-sync options and on
+technical debt and bug fixing. The DBSync team also on boarded a new member.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Worked on an issue which causes <code>ada_pots</code> tables to include the values related not only to an
+epoch, but also the first epoch of the last epoch.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1367" target="_blank" rel="noopener noreferrer">#1367</a></li><li>Fixed an issue where the <code>epoch</code> table didn&#x27;t rollback and caused wrong values
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1370" target="_blank" rel="noopener noreferrer">#1370</a></li><li>Fixed an issue were users with <code>disable-ledger</code> option had to provide the state dir option, even
+though it was never used. Also refactored the no ledger part of the codebase.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1378" target="_blank" rel="noopener noreferrer">#1378</a></li><li>Improved the perforance by using the cache more. Also provided many new options which enables or
+disables parts of db-sync. In addition a new <code>--turbo</code> mode is enables which allows db-sync to sync
+mainnet in hours.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1379" target="_blank" rel="noopener noreferrer">#1379</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-21-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-21T00:00:00.000Z" itemprop="datePublished">February 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The db-sync team created a new tag <code>13.1.0.2</code> which is ready to release.
+We also investigated and had the first working UTxO-HD integration which is one
+of the potential future risks for db-sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrated the UTxO-HD feauture branch in <code>kderme/utxo-hd-1</code>. This doesn&#x27;t
+use the full on disk storage but keeps things in memory and the plan is to keep
+it this way for the first iteration. The integration still has some performance
+issues which we investigate</li><li>Created tag <code>13.1.0.2</code> which upgrades the dependencies of db-sync</li><li>Fixed an issue related to errors appearing in SMASH
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1353" target="_blank" rel="noopener noreferrer">#1353</a></li><li>Continued with ghc-9.2 integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1339" target="_blank" rel="noopener noreferrer">#1339</a></li><li>Worked on an new fixing procedure for
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1348" target="_blank" rel="noopener noreferrer">#1348</a>.
+We try to make these procedures work also on older schema version, without the
+need to migrate to newer schema, which can be very useful for fixing existing
+snapshots.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-14T00:00:00.000Z" itemprop="datePublished">January 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>After spending the last months on improving DBSync and releasing <code>13.1.0.0</code> the DBSync team focused
+the last weeks on integrating upstream changes and tech debt. This includes integrating CHaP, the
+new leger core and ghc-9.2.4</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Integrate CHaP
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1331" target="_blank" rel="noopener noreferrer">#1331</a></li><li>Integrate new ledger core <code>0.1.1.1</code> and ghc-9.2
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1332" target="_blank" rel="noopener noreferrer">#1332</a></li><li>Technical debt: Add code formatter fourmolu
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1334" target="_blank" rel="noopener noreferrer">#1334</a></li><li>Preparing and tracking Conway and UTxO integration</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-db-sync">DB-sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team continued testing release <code>13.1.0.0</code>. The QA team has reported that no issues have
+been found. The DBSync team also worked on cherry-picks back to master and on fixing bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>Release is cherry-picked back to master, which uses the new rollback mechanism which uses
+reverse indexes, same as the release
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1320" target="_blank" rel="noopener noreferrer">#1320</a>
+This also fixes a bug number of issues on master.</li><li>Depenencies upgrade and CHaP integration
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1324" target="_blank" rel="noopener noreferrer">#1324</a></li><li>AdaPots fix <a href="https://github.com/input-output-hk/cardano-db-sync/pull/1323" target="_blank" rel="noopener noreferrer">#1323</a>. This
+fixes an issue where the per epoch AdaPots didn&#x27;t match the epoch boundary, but
+they also included changes from the first block of the epoch.</li><li>Deposits Event fix <a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">#3212</a>. This pr
+adjusts the Deposits ledger events, so that it can be better used by db-sync. This can reduce the
+number of queries that db-sync does during syncing an make syncing faster.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/db-sync"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/db-sync/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>14 posts tagged with &quot;db-sync&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-db-sync">DB sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DB Sync team prepared a release <code>13.1.0.0-rc2</code> which includes many improvements for db-sync,
+it makes rollbacks and syncing much faster, simplifies the schema, fixes bugs and introduces
+migrations. This release finalises the objectives that were set for db-sync for the previous
+3 months period and part of the syncing speed objective set for the next period
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/3640e5aa00b8bada61e5d4b6eee063749866711b/cardano-db-sync/CHANGELOG.md#13100" target="_blank" rel="noopener noreferrer">Changelog</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li><p>Branch <a href="https://github.com/input-output-hk/cardano-db-sync/compare/release/13.0.x..3640e5aa00b8bada61e5d4b6eee063749866711b" target="_blank" rel="noopener noreferrer">release/13.1.0.x</a>
+includes all the improvements related to the release. The release is passing through the testing
+phase and a number of bugs and issues have been fixed, like
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a>
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a>.
+Also many new unit tests have been added.</p></li><li><p>Part of the release branch is cherry-picked back into master, in a way that it respects the new
+release and development process, so that it takes into account migrations
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1305" target="_blank" rel="noopener noreferrer">release process</a></p></li><li><p>The DB Sync team has also tagged release <code>13.0.6</code> which better supports preview and preprod for
+docker.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-01-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The DBSync team is preparing a release which introduces schema simplifications, removes indexes,
+unique and foreign keys. It also provides a way to fix older values and migrates without the need to
+resync from genesis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="schema-simplifications">Schema simplifications<a class="hash-link" href="#schema-simplifications" title="Direct link to heading">​</a></h3><p>Indexes, Unique and Foreign keys are removed in order to speedup syncing
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1295" target="_blank" rel="noopener noreferrer">#1295</a>
+The same pr also introduces a different way to rollback, which doesn&#x27;t rely on foreign keys and
+indexes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><p>The DBSync team ran a big number of benchmarks and investigated ways to speedup syncing. A
+conservative number of these will be included in the next release and the rest can be found in
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/7" target="_blank" rel="noopener noreferrer">performance view</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="migrations-and-resyncing">Migrations and resyncing<a class="hash-link" href="#migrations-and-resyncing" title="Direct link to heading">​</a></h3><p>The next release will be 13.1.0, it will enable a migration without the need to resync. It will also
+introduce a procedure that fixes bytes values of Datum and RedeemerData in existing databases
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release">Release<a class="hash-link" href="#release" title="Direct link to heading">​</a></h3><p>The release has been mostly cherry-picked from master
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1294" target="_blank" rel="noopener noreferrer">#1294</a> and its scope can be seen
+<a href="https://github.com/orgs/input-output-hk/projects/52/views/6" target="_blank" rel="noopener noreferrer">release view</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-04-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="fast-restarts">Fast restarts<a class="hash-link" href="#fast-restarts" title="Direct link to heading">​</a></h3><p> We fixed a long overdue issue in db-sync which caused long delays on restarts
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>. This has been
+one of db-sync main objectives for this period. Restarts are now very fast,
+because db-sync deletes almost nothing from the db, it just replays the ledger rules until it
+reaches the tip of the db. The fix also improves reconnection speed, in cases where the node
+restarts or the connection is temporarily lost. It also speeds up even more in cases where due to a
+deployment mess up a very old snapshot or no snapshot at all is used.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="property-based-testing">Property based testing<a class="hash-link" href="#property-based-testing" title="Direct link to heading">​</a></h3><p>We added stateful property based testing, using <code>quickcheck-state-machine</code>
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1269" target="_blank" rel="noopener noreferrer">1269</a>. These tests use empty or
+almost empty blocks to test the new behaviour of restarts and rollbacks.</p><p> These tests generate arbitrarily a list of symbolic commands from these:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">RollForward Int</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RollBack BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StopDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">StartDBSync</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">RestartNode</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">AssertBlockNo BlockNo</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>The commands are translated into real commands. For example <code>RollForward Int</code> will forge a new block
+that fits on the current chain. These real commands are executed against db-sync using the mock
+chain-sync server. The symbolic commands are executed against a vesy simplistic Model of db-sync
+which looks like this:</p><div class="language-haskell codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-haskell codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">  Model</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    { serverTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSyncTip :: BlockNo</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsIsOn :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    , dbSynsHasSynced :: Bool</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    }</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Finally a number of postconditions are checked, related to the eventual block number of db-sync.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We handled a number of tech debt in
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1275" target="_blank" rel="noopener noreferrer">1275</a>
+This improves the code format of db-sync, deletes many queries that were never used and groups the
+others. This tech debt resolution not only improves the experience of working in db-sync, but can
+facilitate some of our other objectives, as it makes it very explicit which queries are used
+during syncing and which indexes are necessary.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="smash">Smash<a class="hash-link" href="#smash" title="Direct link to heading">​</a></h3><p>We worked on fixing an issue related to fetching pool metadata
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1276" target="_blank" rel="noopener noreferrer">1276</a>.
+The issue which is described in
+<a href="https://github.com/input-output-hk/cardano-db-sync/issues/1270" target="_blank" rel="noopener noreferrer">1270</a></p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-19-db-sync">DB Sync Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-19T00:00:00.000Z" itemprop="datePublished">September 19, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kderme.png" alt="Kostas Dermentzis"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kderme" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kostas Dermentzis</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano DB-Sync Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="dbsync-update">DBSync Update<a class="hash-link" href="#dbsync-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tag">New Tag<a class="hash-link" href="#new-tag" title="Direct link to heading">​</a></h3><p>We created a new db-sync tag 13.0.5 which addresses shortcomings of the last
+release 13.0.4. It is currently under testing.
+The Changelog is
+<a href="https://github.com/input-output-hk/cardano-db-sync/blob/8ad98d48e0068f3768d48e18fdcbe254037cba3b/cardano-db-sync/CHANGELOG.md#1305" target="_blank" rel="noopener noreferrer">here</a> and in more details:</p><ul><li><p>We fixed fees for tx with phase 2 failure that didn&#x27;t include a total collateral field.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1248" target="_blank" rel="noopener noreferrer">1248</a></p></li><li><p>We fixed an issue that could cause db-sync to crash if a specific rollback occured.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1247" target="_blank" rel="noopener noreferrer">1247</a></p></li><li><p>DBSync will now avoid reserialising data, especially Datums, which not only slows down db-sync but
+could result in the wrong CBOR encoding being inserted.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1217" target="_blank" rel="noopener noreferrer">1217</a></p></li><li><p>All the fixes above come with unit tests which validates the fix.</p></li><li><p>Added support for preprod and preview from docker. DBSync no longer needs to include the configs
+for different networks, these are directly fetched from the cardano world.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1254" target="_blank" rel="noopener noreferrer">1254</a></p></li><li><p>We added better support from docker for the new disable options and the overall documentation.
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1260" target="_blank" rel="noopener noreferrer">1260</a></p></li></ul><p>All the above were also backported to the master branch</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made the db-sync <a href="https://github.com/orgs/input-output-hk/projects/52/views/1" target="_blank" rel="noopener noreferrer">board public</a>, so
+everyone can have access on the issues we prioritise.
+We also added new tasks to the board, some of them could be approachable to newcomers or people who
+want to contribute.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-tech-debt-and-new-features">Progress on tech debt and new features<a class="hash-link" href="#progress-on-tech-debt-and-new-features" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-db-sync/pull/1223" target="_blank" rel="noopener noreferrer">1223</a> was merged, which removes the
+foreign keys from the db schema. This opens the road to a number of optimizations.</p></li><li><p>An additional fix on top of the previous work was added
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1250" target="_blank" rel="noopener noreferrer">1250</a></p></li><li><p>An initial version where DBSync does not rollback on restart is done here
+<a href="https://github.com/input-output-hk/cardano-db-sync/pull/1266" target="_blank" rel="noopener noreferrer">1266</a>.
+This allows db-sync to restart much faster, without the need to delete data and reinsert them. In
+the future it can also facilitate migrations in cases where the ledger snapshots have a breaking
+change, without the need to resync everything from genesis.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/db-sync">db-sync</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/db-sync/page/2"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>2 posts tagged with &quot;devx&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-06-developer-experience">Developer Experience Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-06T00:00:00.000Z" itemprop="datePublished">July 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been dealing with day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, CI migration from Cicero to Hydra, and Buildkite to GitHub Actions. iohk-nix, haskell.nix, and devx have seen improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>The DevX team has helped troubleshoot a few CI issues, and focused on helping to migrate from Cicero to Hydra, as well as from Buildkite to GitHub Actions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>Compatibility with 9.6 has been continued and most of our libraries are not 9.6 compatible. Only a few are not, we hope to have this done by the end of the month. We&#x27;ve also started preliminarily adding GHC 9.8 to our infrastructure for early compiler regression tests.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="hydra-tools">Hydra Tools<a class="hash-link" href="#hydra-tools" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/hydra-tools" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, has seen quite some improvements to facility the hydra &lt;-&gt; github integration.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of preliminary GHC 9.8 support.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository has seen significant improvements, including the addition of GitHub Codespaces, and DevContainers. Integrated with our <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">actions/devx</a> GitHub Actions, we have a consistent set of tooling for</p><ul><li>nix develop shells</li><li>GitHub CodeSpaces integration</li><li>VSCode DevContainer support</li><li>GitHub Actions integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-developer-experience">Developer Experience Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/angerman.png" alt="Moritz Angermann"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/angerman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Moritz Angermann</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Developer Experience</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Developer Experience team has been devoted to day-to-day troubleshooting and support of various elements including build failures, compiler upgrades, the maintaince of our cardano-haskell-packages (CHaP), and infrastructure like GitHub Actions, iohk-nix, haskell.nix, and devx. Furthermore, we have also contributed to upstream tooling improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="build-support--maintainance">build support &amp; maintainance<a class="hash-link" href="#build-support--maintainance" title="Direct link to heading">​</a></h3><p>Our DevX team has been instrumental in troubleshooting and fixing a wide range of issues, from broken windows builds and obscure <code>LoadDLL</code> errors to <code>blst</code> integration across Nix and Github CI. We&#x27;ve also initiated automatic uploads for release assets. Our efforts in streamlining complex CI setups have paid off, with some repositories like <a href="https://github.com/input-output-hk/cardano-base" target="_blank" rel="noopener noreferrer">cardano-base</a> experiencing significant reductions in CI complexity.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="compiler-upgrades">compiler upgrades<a class="hash-link" href="#compiler-upgrades" title="Direct link to heading">​</a></h3><p>After the support for 9.2 across our libraries, we have started working on 9.6 compabilitiy as well. This move brings us closer to the upstream compiler, facilitating the contribution of patches and enabling early detection of regressions. In addition, we&#x27;re prioritizing compaining even stronger for better backwards compatibility.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="chap-cardano-haskell-packages">CHaP (cardano-haskell-packages)<a class="hash-link" href="#chap-cardano-haskell-packages" title="Direct link to heading">​</a></h3><p>We relocated the underlying tooling, (<a href="https://github.com/input-output-hk/foliage" target="_blank" rel="noopener noreferrer">foliage</a>), for <a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a> into the IOG organization. Furthermore, we have introduced <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/260" target="_blank" rel="noopener noreferrer">improved tooling to quickly add constraints to packages</a>, <a href="https://github.com/input-output-hk/cardano-haskell-packages/issues/285" target="_blank" rel="noopener noreferrer">better error reporting for add-revision</a> and <a href="https://github.com/input-output-hk/foliage/pull/63" target="_blank" rel="noopener noreferrer">better hackage url compatibility</a> to facilitate easer usage of CHaP.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="github-actions">GitHub Actions<a class="hash-link" href="#github-actions" title="Direct link to heading">​</a></h3><p>Our repository, <a href="https://github.com/input-output-hk/actions" target="_blank" rel="noopener noreferrer">input-output-hk/actions</a>, now houses the necessary actions for installing pre-requisites to build Cardano projects using GitHub Actions. Leveraging the <code>base</code> and <code>haskell</code> install actions has allowed us to simplify workflows in the repos, focusing primarily on invoking <code>cabal</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><p>The <a href="https://github.com/input-output-hk/iohk-nix" target="_blank" rel="noopener noreferrer">iohk-nix</a> repository has undergone a major revamp and now provides pre-built packages of the cryptographic libraries IOG utilizes for GitHub Runners. The key components we use, <code>sodium</code>, <code>blst</code>, and <code>secp256k1</code>, are also fixed to certain revisions within the <code>iohk-nix</code> repository.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haskellnix">haskell.nix<a class="hash-link" href="#haskellnix" title="Direct link to heading">​</a></h3><p><a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">Haskell.nix</a> has been maintained and updated with the addition of GHC 9.6.2 and GHC 8.2.8. After discovering performance regression in the native bignum backend, we switched the default bignum backend to <code>gmp</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx">devx<a class="hash-link" href="#devx" title="Direct link to heading">​</a></h3><p>The relatively new <a href="https://github.com/input-output-hk/devx" target="_blank" rel="noopener noreferrer">devx</a> repository is where we experiment with a single nix development shell that aims to suffice for most use-cases at IOG. This initiative is expected to eliminate a number of CI failures related to project-build and shell interaction problems. The <code>devx</code> repository&#x27;s readme has been updated to reflect its purpose and usage guidelines.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="upstream-tooling">upstream tooling<a class="hash-link" href="#upstream-tooling" title="Direct link to heading">​</a></h3><p>Our team remains committed to enhancing upstream tooling, with ongoing contributions to GHC, Cabal, and Nix.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/devx">devx</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;embedding-quality&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-03-embedding-quality">Embedding Quality Workstream</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-03T00:00:00.000Z" itemprop="datePublished">November 3, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made good progress on most of the Action Items we agreed on Lisbon, like:</p><ul><li>Cardano System Tests was fully open to public (tools, tests, results)
+See <a href="https://input-output-hk.github.io/cardano-node-tests" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>We defined an <a href="https://github.com/input-output-hk/cardano-node/blob/master/.github/ISSUE_TEMPLATE/user-facing-feature.md" target="_blank" rel="noopener noreferrer">user-facing-functionality template</a> that is used with the cardano-cli team <ul><li>this includes acceptance criteria &amp; user stories, and definition of done</li></ul></li><li>We are in the process of running the cardano-node-tests at commit &amp; PR level in cardano-node (we are affected by the Cicero migration right now but we did most of the work already)</li><li>We started to apply a <em>labelling convention</em> on <a href="https://github.com/input-output-hk/cardano-node/issues" target="_blank" rel="noopener noreferrer">cardano-node issues</a> that will be used to generate some visual dashboards with some metrics <!-- -->[TBD]</li><li>Ziyand Liu started an <em>End-to-End Development and Testing Process for Plutus Features</em></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/embedding-quality">embedding-quality</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;goedel&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and testing the
+performance analysis tool</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>drafting processs calculus semantics of mini protocol programs</p></li><li><p>testing the new performance modelling tool</p></li><li><p>further work on specification of mini protocols</p></li><li><p>extension of mini protocol framework to support communication of
+programs with local environments via synchronous channels</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>working on collating and open sourcing performance analysis prototype</p></li><li><p>improvements to Ouroboros Praos specification in Isabelle</p></li><li><p>working on formalising chain sync mini-protocol</p></li><li><p>reviewing an alternatice semantics for DeltaQ</p></li><li><p>Seminar talk at U. Bergen on algebraic properties of timeliness</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>finalising a presenting performance analysis internship work to the
+formal methods team</p></li><li><p>developed a new Isabelle mini-protocol framework and examples</p></li><li><p>planning an extended version of the ICE DeltaQ paper</p></li><li><p>working on algebraic rules for properisation of any-to-finish</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is currently formalising mini protocols and also further
+developing the performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Development of an automated prover for showing conformance of
+programs to state machines (as part of the mini-protocol framework)</p></li><li><p>Completion of the documentation of the (current state of the)
+mini-protocol framework</p></li><li><p>Discussion about two DeltaQ lectures with two practical sessions as part
+of 4th year masters course on distributed systemsby colleagues at UC
+Louvain in the Autumn</p></li><li><p>Discussion about four DeltaQ lectures by colleagues at U. Bergen as part
+of a 5th year Masters course in the Autumn</p></li><li><p>Adapted original DeltaQ implementation to the new typeclasses and
+wrote property tests for its algebraic laws</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is formalising mini protocols and also further developing the
+performance modelling prototype.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Developing new framework for specification and verification of
+mini-protocols which is closer to the Haskell implementation.</p></li><li><p>Developed a new internal representation for the DeltaQ algebra that
+allows for more modularity in backend implementations</p></li><li><p>Discussions regarding the Cardano networking specification</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/goedel/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;goedel&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-20-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-20T00:00:00.000Z" itemprop="datePublished">July 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on formalising mini protocols, the performance
+modelling prototype and also finishing off their ICE papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Formalization of the chain synchronization mini-protocol in the
+thorn calculus</p></li><li><p>Final pre-publication steps for ICE 2023 papers</p></li><li><p>Developing approach for specification and verification of
+mini-protocols</p></li><li><p>Started work on porting the DeltaQ framework to a new, more concrete
+backend based on piecewise-polynomials</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams have been working on finalising their ICE papers
+for publication in EPTCS, formalising concensus, and investigating chain
+sync.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final versions of ICE papers</p></li><li><p>Reviewing the chain sync design and documentation</p></li><li><p>Refactoring the thorn calculus</p></li><li><p>First draft of Praos specification</p></li><li><p>Developing bounding factors on timeouts</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the teams presented two papers at ICE 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Presented two papers at ICE 2023: <a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing and implementing chain synchronization mini protocol</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on giving and preparing public
+talks, also on preparing final versions of their ICE 2023 papers, and
+on analysing chain selection.</p><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Lambda Days keynote by Kevin Hammond:
+<a href="https://www.lambdadays.org/lambdadays2023" target="_blank" rel="noopener noreferrer">https://www.lambdadays.org/lambdadays2023</a></p></li><li><p>Codebeam keynote by Peter Van Roy: <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a>; <a href="https://www.youtube.com/watch?v=h8sE3Ai8Dsk" target="_blank" rel="noopener noreferrer">https://www.youtube.com/watch?v=h8sE3Ai8Dsk</a></p></li><li><p>Preparing talks and final versions for two ICE 2023 contributions:
+<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a></p></li><li><p>Analysing chain selection.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final revisions for the
+pre-proceedings versions of two ICE 2023 papers.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Porting Ouroboros Praos formalisation to new application layer.</p></li><li><p>Preparing pre-proceedings version of two ICE 2023 papers.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/goedel"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/goedel/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;goedel&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team had two paper accepted for ICE 2023
+(<a href="https://www.discotec.org/2023/ice" target="_blank" rel="noopener noreferrer">https://www.discotec.org/2023/ice</a>). The event will be held in Lisbon
+on 19th June 2023. The papers will be published in EPTCS.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Application layer for Praos formalisation in review.</p></li><li><p>Participating in interactive peer review process for ICE 2023.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team is working on porting an existing formalisation of Ouroboros
+Praos to a newer foundation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>The team worked on documentation.</p></li><li><p>The team worked on an application layer for the Praos formalisation.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-14-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has submitted two papers for publication, carried
+out consultancy with other teams and has an opening for an intern.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Finalised and submitted two papers to ICE 2023</p></li><li><p>Studying Praos paper.</p></li><li><p>The team is hiring a performance engineering intern - <a href="https://apply.workable.com/io-global/j/BFEC5B0AFF/" target="_blank" rel="noopener noreferrer">https://apply.workable.com/io-global/j/BFEC5B0AFF/</a></p></li><li><p>Design exploration for congestion management.</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on final drafts of two papers
+for internal review and planning next steps of analysis of consensus
+design refiniments.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing final draft of DeltaQSD algebra paper for internal review</p></li><li><p>Preparing final draft of verifying design refinements for
+distributed system design for internal review</p></li><li><p>Planning next phase of consensus design refinement analysis</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-16-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-16T00:00:00.000Z" itemprop="datePublished">March 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers
+improving the deltaQ tutorial, consulting on performance design, and
+the final version of the Djed paper.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for ICE 2023</p></li><li><p>Successful outcome of Marlowe consultancy leading to substantial
+improvement in performance</p></li><li><p>Preparing sections on the communication language and bisimulation
+proofs for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Camera ready version of Djed paper under preparation</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/goedel/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/goedel/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>18 posts tagged with &quot;goedel&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, improving the deltaQ tutorial, consulting on
+performance design, and the Djed paper has been accepted for
+publication.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Preparing draft of DeltaQSD algebra paper for FORTE 2023</p></li><li><p>Extending the technical report on which the above paper is based</p></li><li><p>Consulting with an external company on performance engineering of Plutus contracts</p></li><li><p>Planning improvements and collecting material for the deltaQ
+tutorial based on experience with systems that manage risk at
+multiple timescales</p></li><li><p>Preparing sections on the communication language and idempontency
+laws for draft paper about verifying design refinements for
+distributed system design</p></li><li><p>Studying Cardano chain sync protocol</p></li><li><p>&quot;Djed: A Formally Verified Crypto-Backed Autonomous Stablecoin
+Protocol&quot; has been accepted for publication at IEEE ICBC 2023</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been working on drafts of two papers and one
+technical report, distributivity properties of deltaQ, and consulting
+on performance design with the Marlowe team.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li><p>Processing reviews on performance engineering paper and planning
+paper revisions accordingly</p></li><li><p>Investigating distributivity properties of DeltaQ</p></li><li><p>Preparing sections on the thorn calculus and idempotency laws for
+draft paper about verifying design refinements for distributed
+system design</p></li><li><p>Consulting on performance design with Marlowe team</p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-goedel">Goedel Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jmchapman.png" alt="James Chapman"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jmchapman" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">James Chapman</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Formal Methods</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The team works on applied research and consulting in formal methods
+that is directly applicable to evidence based engineering in Core Tech
+and beyond.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This sprint the team has been preparing several papers for peer review
+and knowledge sharing and consulting within IO and the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="details">Details<a class="hash-link" href="#details" title="Direct link to heading">​</a></h2><ul><li>R&amp;D Seminar on experience participating in a member based organisation</li><li>Full day tutorial on performance engineering presented at HiPEAC
+2023 conference</li><li>Finished preparing and submitted a paper on performance engineering
+to an ACM workshop</li><li>Preparing a draft paper for future submission about verifying design
+refinements for distributed system design</li><li>Consulting on performance design of other IO projects</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/goedel">goedel</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/goedel/page/3"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team conducted a packed Monthly Review meeting,
+featuring demonstrations and the preparation of the monthly report. They
+addressed flakiness in tests and enhanced the logs json schema,
+improving overall test reliability. Additionally, the team successfully
+built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI, expanding platform
+support. They further improved the network configuration by detecting
+incompatible persisted states, contributing to overall system
+robustness. Finally, the team released version 0.14.0, highlighting
+their commitment to delivering regular updates and improvements.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Monthly Review
+<a href="https://drive.google.com/file/d/1-iv8IveUzA2KrJV_Kqrgx4ts05Ow0zjM" target="_blank" rel="noopener noreferrer">meeting</a>
+packed with demonstrations and prepared monthly report
+<a href="https://github.com/input-output-hk/hydra/pull/1189" target="_blank" rel="noopener noreferrer">#<!-- -->1189</a></li><li>Fixed several flaky tests and improved the logs json schema
+<a href="https://github.com/input-output-hk/hydra/pull/1188" target="_blank" rel="noopener noreferrer">#<!-- -->1188</a><a href="https://github.com/input-output-hk/hydra/issues/1190" target="_blank" rel="noopener noreferrer">#<!-- -->1190</a><a href="https://github.com/input-output-hk/hydra/pull/1192" target="_blank" rel="noopener noreferrer">#<!-- -->1192</a></li><li>Built MacOS ARM64 (<code>aarch64-darwin</code>) binaries in CI
+<a href="https://github.com/input-output-hk/hydra/pull/1182" target="_blank" rel="noopener noreferrer">#<!-- -->1182</a></li><li>Improved network configuration by detecting incompatible persisted
+states <a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a></li><li>Released version 0.14.0</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Start work on incremental decommit</li><li>Continue shepherding contributed PRs to completion</li><li>Finish stateless-observation work</li><li>Open a head on a Conway network</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team spent significant time opening a head among
+themselves on <code>mainnet</code> using the release candidate, revealing and
+addressing lurking bugs such as
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a>. Also
+required was this change to dynamically calculate the min utxo value
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, a
+necessary adjustment following the switch to inline datums. The team
+engaged with <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss recent
+changes and collaborated on drafting feature ideas, including providing
+<a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway support</a>
+for the Hydra roadmap. As part of ongoing improvements, they
+experimented with writing the specification in markdown instead of
+LaTex.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Opened head among us on mainnet and uncovered a few lurking bugs like
+<a href="https://github.com/input-output-hk/hydra/issues/1174" target="_blank" rel="noopener noreferrer">#<!-- -->1174</a> in the
+release candidate</li><li>Calculate the min utxo value instead of hard-coding it
+<a href="https://github.com/input-output-hk/hydra/pull/1176" target="_blank" rel="noopener noreferrer">#<!-- -->1176</a>, which is
+needed since we switched to inline datums.</li><li>Met with the <code>cardano-cli</code> / <code>cardano-api</code> maintainers to discuss
+recent changes and way forward</li><li>Drafted features ideas to provide <a href="https://github.com/input-output-hk/hydra/issues/1177" target="_blank" rel="noopener noreferrer">Conway
+support</a> on the
+Hydra roadmap</li><li>Experimented in writing the specification in markdown instead of LaTex</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Have the Monthly review meeting with several demos</li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this
+scope</a></li><li>Complete tidying up chain layer via stateless observation changes in
+hydra-node
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#<!-- -->1096</a></li><li>Update dependencies to prepare for Conway
+<a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#<!-- -->1114</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team made several impactful updates. They addressed
+misleading errors regarding collect com transactions, resolved a security
+advisory (CVE-2023-42806), and simplified the Hydra Head protocol by using
+inline datums. The team also tackled minor inconsistencies in specifications and
+implementation, documented reasons for potentially dropped close transactions by
+the cardano-node, and collaborated with SundaeLabs on an offline mode for
+<code>hydra-node</code>. Additionally, they engaged in discussions with researchers about
+incremental de-/commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Removed misleading errors about collect com transactions <a href="https://github.com/input-output-hk/hydra/issues/839" target="_blank" rel="noopener noreferrer">#839</a></li><li>Addressed security advisory <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a> in PR <a href="https://github.com/input-output-hk/hydra/pull/1161" target="_blank" rel="noopener noreferrer">#1161</a></li><li>Changed the head protocol to use inline datums, simplifying things in the hydra-node <a href="https://github.com/input-output-hk/hydra/pull/1162" target="_blank" rel="noopener noreferrer">#1162</a></li><li>Addressed minor inconsistencies in spec and implementation <a href="https://github.com/input-output-hk/hydra/issues/1104" target="_blank" rel="noopener noreferrer">#1104</a></li><li>Documented why close transacations might be dropped by the cardano-node (can<!-- -->’<!-- -->t fix) <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a></li><li>Tidy up a few things here and there</li><li>Worked with SundaeLabs on the offline mode for <code>hydra-node</code></li><li>Discussed incremental de-/commits with researchers</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Start work on incremental decommits protocol specification <a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Provide support to Hypix</li><li>Address all <a href="https://github.com/input-output-hk/hydra/labels/bug%20%3Abug%3A" target="_blank" rel="noopener noreferrer">open bugs</a></li><li>Release version 0.14.0 with <a href="https://github.com/input-output-hk/hydra/milestone/14?closed=1" target="_blank" rel="noopener noreferrer">this scope</a></li><li>Update dependencies to prepare for Conway <a href="https://github.com/input-output-hk/hydra/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Shepherd off-line mode PR over the finish line</li><li>Complete tidying up chain layer via stateless observation changes in hydra-node <a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>The last two weeks, the Hydra team achieved several milestones. They published
+the monthly report for October, providing updates on project developments. The
+team delivered a presentation and workshop at the Cardano Summit, contributing
+to community engagement. They implemented a \&quot;dirt road\&quot; solution for the
+\&quot;Ignored init tx\&quot; notification and moved the <code>hydra-poll</code> example project to a
+dedicated repository. Additionally, the team built a <code>hydra-chain-observer</code> tool
+for Hydra Heads, updated the toolchain to GHC 9.6.3, and made various
+improvements to tooling and code formatting. They addressed specific issues,
+such as fixing the <code>gen-hydra-keys</code> command and resolving concerns with the
+rewritten <code>hydra-tui</code>. The team also enhanced the <code>hydra-cluster</code> smoke test
+suite by fetching network configurations dynamically. Lastly, they actively
+reviewed pull requests and architectural decision records from the community,
+including contributions from SundaeSwap. An experiment, the Hydra tally, was
+completed and successfully deployed to the mainnet by the Cardano Foundation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Published the monthly <a href="https://hydra.family/head-protocol/monthly/2023-10" target="_blank" rel="noopener noreferrer">report for
+october</a></li><li>Given a presentation / workshop at the Cardano summit
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a> (without
+stateless observation)</li><li>Completed and moved <code>hydra-poll</code> example project into a
+dedicated
+<a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">repository</a></li><li>Built a first version of a chain observation tool for Hydra Heads
+<a href="https://github.com/input-output-hk/hydra/issues/1096" target="_blank" rel="noopener noreferrer">#1096</a></li><li>Switched toolchain to GHC 9.6.3 and various improvements on tooling
+and code formatting
+<a href="https://github.com/input-output-hk/hydra/pull/1135" target="_blank" rel="noopener noreferrer">#1135</a><a href="https://github.com/input-output-hk/hydra/pull/1152" target="_blank" rel="noopener noreferrer">#1152</a><a href="https://github.com/input-output-hk/hydra/pull/1151" target="_blank" rel="noopener noreferrer">#1151</a><a href="https://github.com/input-output-hk/hydra/pull/1154" target="_blank" rel="noopener noreferrer">#1154</a></li><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing
+keys <a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Fetch network configurations instead of packaging them into
+hydra-cluster (smoke) test suite
+<a href="https://github.com/input-output-hk/hydra/pull/1156" target="_blank" rel="noopener noreferrer">#1156</a></li><li>Reviewing PRs and ADRs from the community (SundaeSwap)
+<a href="https://github.com/input-output-hk/hydra/pull/1118" target="_blank" rel="noopener noreferrer">#1118</a><a href="https://github.com/input-output-hk/hydra/pull/1157" target="_blank" rel="noopener noreferrer">#1157</a></li><li>Hydra tally experiment (Cardano Foundation) deployed to mainnet</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Tackle reported bugs</li><li>Shepherd contributed off-line mode PR to the main codeline</li><li>Improve chain observation tool to include more data and refactor
+existing code towards more stateless observation</li><li>Start work on incremental decommits</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h3 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h3><p>This week, the Hydra team fixed the <code>gen-hydra-keys</code> command to avoid
+overwriting existing keys, and resolved issues related to the rewritten
+<code>hydra-tui</code>. They also worked on a \&quot;dirt road\&quot; implementation for the
+\&quot;Ignored init tx\&quot; notification, improving the robustness of the system.</p><p>The team finalized preparations for the Cardano Summit presentation, including
+implementation of the <code>hydra-poll</code> example DApp.</p><p>If you happen to read this and attend the Summit in Dubai, make sure to check
+out our Masterclass about \&quot;Developing Hydra + Mithril for Scaling Cardano\&quot; on
+Friday, November 3 at 14:00-15:30 local time in the \&quot;Al Dar\&quot; room!</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Fix <code>gen-hydra-keys</code> command to not overwrite existing keys
+<a href="https://github.com/input-output-hk/hydra/issues/1136" target="_blank" rel="noopener noreferrer">#1136</a></li><li>Fixed the rewritten <code>hydra-tui</code><a href="https://github.com/input-output-hk/hydra/issues/1113" target="_blank" rel="noopener noreferrer">#1113</a><a href="https://github.com/input-output-hk/hydra/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Finalized cardano summit preparation
+<a href="https://github.com/input-output-hk/hydra/issues/1109" target="_blank" rel="noopener noreferrer">#1109</a></li><li>Implemented the <code>hydra-poll</code> example DApp <a href="https://github.com/cardano-scaling/hydra-poll" target="_blank" rel="noopener noreferrer">link to
+repository</a></li><li>Dirt road implementation for \&quot;Ignored init tx\&quot; notification
+<a href="https://github.com/input-output-hk/hydra/issues/529" target="_blank" rel="noopener noreferrer">#529</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Attend cardano summit and deliver presentation</li><li>Clarify / close user created issues</li><li>Build <code>aarch64-darwin</code> binaries in CI</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-16-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-16T00:00:00.000Z" itemprop="datePublished">December 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team kicked off a new project together with Catalyst, the Cardano Foundation and researchers from IO: a proof of concept for voting on Hydra. The concluded work on validating the Head protocol using model-based testing and formulated next steps, fixed the transaction cost benchmark reporting on <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/" target="_blank" rel="noopener noreferrer">the website</a> and reduced the cost for commit transactions by ~30% with the help of reference scripts.</p><p>The year is coming to an end and velocity will slow down a bit while the team focuses on wrapping up loose ends. The updates here will pause until January 2023.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Kicked-off Hydra Voting project with Catalyst, CF, and IO Research.</li><li>Reduce commit transaction costs by ~30% with reference scripts.</li><li>Prepared an RFP for external audit of the Hydra Head solution.</li><li>Fixed transaction cost benchmarks for abort tx <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a>.</li><li>Recorded decision to use model-based testing (<a href="https://hydra.family/head-protocol/adr/22/" target="_blank" rel="noopener noreferrer">ADR22</a>) and improved Model <a href="https://hydra.family/head-protocol/haddock/hydra-node/tests/Hydra-Model.html" target="_blank" rel="noopener noreferrer">documentation</a>.<ul><li>Concluding the first increment on <!-- -->“<!-- -->Validate coordinated Head protocol<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a>.</li><li>Formulated next step / follow-up on testing the Soundness property of our protocol <a href="https://github.com/input-output-hk/hydra/issues/656" target="_blank" rel="noopener noreferrer">#656</a>.</li></ul></li><li>Switched to using nix flakes for development setup and CI build <a href="https://github.com/input-output-hk/hydra/pull/646" target="_blank" rel="noopener noreferrer">#646</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Push <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> &amp; tx validity gap over the finish line (smoke tests missing).</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Close &amp; recap on the year with another monthly report (+ blog post).</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on completing to &quot;Validate coordinated head protocol against formal model&quot;, this is a huge step to verify the implementation is secure. They also worked on implementing <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> related to bounded tx validity which is now under review. <a href="https://github.com/obsidiansystems/hydra-pay" target="_blank" rel="noopener noreferrer">HydraPay</a> project, from Obsidian Systems, is coming to an end of the first phase at least, so team did a review and submitted couple of <a href="https://github.com/obsidiansystems/hydra-pay/issues?q=is%3Aissue" target="_blank" rel="noopener noreferrer">issues</a> they found in the process. The team had a meeting with the Director of CyberSecurity - topic was the RFP that is currently in flight that should scope the work of future auditors. Also, the team completed the hydra-tutorial review created by our colleague Thomas Vellecoop from the education team, and we are close to integrate it to our official site. From the development side, they have fixed a bug on the CI when running the benchmark jobs to calculate the cost of abortTx and a flaky spec which checks a plutus merkle-tree is always balanced.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Document model based testing <a href="https://github.com/input-output-hk/hydra/issues/194" target="_blank" rel="noopener noreferrer">#194</a> &amp; <a href="https://github.com/input-output-hk/hydra/issues/641" target="_blank" rel="noopener noreferrer">#641</a></li><li>Got <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a>, reducing gaps between implementation and specification, under review.</li><li>Complete review on <code>hydra-tutorial</code>.</li><li>Complete first round of review on <code>HydraPay</code> work <a href="https://github.com/input-output-hk/hydra/issues/634" target="_blank" rel="noopener noreferrer">#634</a></li><li>Meeting with <code>Director of CyberSecurity</code> frio <code>IOG</code> to unblock &quot;the RFP prepared for the external audit&quot; <a href="https://github.com/input-output-hk/hydra/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Remove <code>vasil-dev</code> and <code>testnet</code> from <code>smoke-test</code> because they were not working <a href="https://github.com/input-output-hk/hydra/issues/630" target="_blank" rel="noopener noreferrer">#630</a></li><li>Fix flaky <code>plutus-merkle-tree</code> test <a href="https://github.com/input-output-hk/hydra/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Refactor <code>NetworkSpec</code> to improve legilibility.</li><li>Fix benchmark cost for <code>abortTx</code> <a href="https://github.com/input-output-hk/hydra/issues/631" target="_blank" rel="noopener noreferrer">#631</a></li><li>Adapt <code>nix.conf</code> to the recent hydra-ci nix cache migration.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> accepted &amp; close tx validity gap in our implementation.</li><li>Integrate the <code>hydra-tutorial</code>.</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec.</li><li>Get Cicero (new CI) working.</li><li>Use reference inputs to reduce the cost of the <code>commitTx</code>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-02-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-02T00:00:00.000Z" itemprop="datePublished">December 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on cleaning up several things in progress
+after last week&#x27;s summit. They have extended their model-based testing (MBT)
+approach with transaction creation &amp; observation
+<a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a>, solved
+<code>AcquirePointTooOld</code> problems of the <code>hydra-node</code> with by changing the wallet
+initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a>.
+Also, the Hydra researchers updated the security proofs of the Coordinated Hydra
+Head, which are bound to be included in the Hydra HeadV1 specification.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review &amp; report - will also be published on our website <a href="https://github.com/input-output-hk/hydra/pull/644" target="_blank" rel="noopener noreferrer">#644</a></li><li>Extended the model-based testing (MBT) with transaction creation/observation <a href="https://github.com/input-output-hk/hydra/issues/410" target="_blank" rel="noopener noreferrer">#410</a></li><li>Solve <code>AcquirePointTooOld</code> problems with new wallet initialization <a href="https://github.com/input-output-hk/hydra/issues/439" target="_blank" rel="noopener noreferrer">#439</a></li><li>Fixed our hydraw deployments (EC2 instances)</li><li>Created &amp; discussed <a href="https://github.com/input-output-hk/hydra/blob/7e532bd1c8a840a8155cf4b0858b982308dfc3f0/docs/adr/CloseTx-validity-bounds-and-deadline-calculation-DoS.md" target="_blank" rel="noopener noreferrer">ADR21</a> within tx validity work</li><li>Received &amp; discussed security proofs of Coordinated Hydra Head (requires more work)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get ADR21 accepted &amp; close tx validity gap in our implementation</li><li>Complete review &amp; integrate the Hydra tutorial</li><li>Review latest hydra-pay work</li><li>Have a LaTeX write-up of the HeadV1 (Coordinated Hydra Head) spec</li><li>Get Cicero (new CI) working</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-25-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-25T00:00:00.000Z" itemprop="datePublished">November 25, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team attended the Cardano Summit in Lausanne, where Sebastian gave a <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">presentation</a> about Hydra and the whole team connected with the Cardano Community. After the public event, th Hydra team also conducted a workshop, which provided room for a retrospective, various planning sessions and they hacked together on different ideas.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Attended the Cardano Summit in Lausanne. Hydra was topic of one talk: <a href="https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/" target="_blank" rel="noopener noreferrer">https://summit.cardano.org/agenda-day-2/cardano-ballot-speaker-winner-presentation-6/</a></li><li>Had a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Impact mapping session</li><li>Hacked on smaller things</li></ul></li><li>Got a PR for tullia/cicero things by @kdermetfan</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting</li><li>Tie up several loose ends / branches.</li><li>Resolve Tx validity discussions &amp; PRs.</li><li>Review cicero PR &amp; try it out.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-18-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version <code>0.8.1</code>, which includes several fixes and a user-wished extension of the persistence introduced by <code>0.8.0</code> of replaying server outputs to make clients like the <code>hydra-tui</code> be aware of the latest <code>hydra-node</code> state. The team also worked on the specification and closing gaps in the on-chain scripts, collaborated with the education team on a Hydra tutorial and also renamed the repository from <code>hydra-poc</code> to <a href="https://github.com/input-output-hk/hydra" target="_blank" rel="noopener noreferrer"><code>hydra</code></a>!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implemented replaying of server outputs to address <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Released version 0.8.1 containing this and other fixes <a href="https://github.com/input-output-hk/hydra/releases/tag/0.8.1" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Worked on the bounded tx validity as one of the on-chain script fixes, but couldn<!-- -->’<!-- -->t finish it just yet <a href="https://github.com/input-output-hk/hydra/pull/615" target="_blank" rel="noopener noreferrer">#615</a></li><li>Collaborated with the education team on a Hydra tutorial.</li><li>Discovered and discussed issues with the <!-- -->“<!-- -->seen ledger<!-- -->”<!-- -->.</li><li>Renamed the Hydra repository <code>hydra-poc</code> -&gt; <code>hydra</code></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Create and discuss an ADR about handling tx validity correctly.</li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li><li>Have a team workshop / hackathon after the summit:<ul><li>Retrospective</li><li>Roadmapping session</li><li>Hack on something complex or useful</li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/9"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/11"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published together with Obsidian Systems a light paper
+on our &quot;Hydra for Payments&quot; project (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>). They have created a draft scope RFP for the external audit and worked with the internal audit team to clear up the specification. From the development side, they have fixed a bug with chain-following when using persistence and improved logs for better observability of <code>hydra-node</code> processes. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published Hydra for Payments light paper (<a href="https://iohk.io/en/blog/posts/2022/11/10/hydra-for-payments-introducing-developer-tooling-to-unlock-micropayments-on-cardano/" target="_blank" rel="noopener noreferrer">Link</a>)</li><li>Have a draft RFP ready for a first review internally</li><li>Answered the internal auditor<!-- -->’<!-- -->s questions</li><li>Fixed a bug with following the chain when starting with persistence (<a href="https://github.com/input-output-hk/hydra-poc/issues/599" target="_blank" rel="noopener noreferrer">#599</a>)</li><li>Minor improvements to logging for better observability (<a href="https://github.com/input-output-hk/hydra-poc/issues/598" target="_blank" rel="noopener noreferrer">#598</a>, <a href="https://github.com/input-output-hk/hydra-poc/issues/600" target="_blank" rel="noopener noreferrer">#600</a>)</li><li>Non-achievement: Needed to work around flaky TUI ci, follow-up issue if anyone wants to have a look (<a href="https://github.com/input-output-hk/hydra-poc/issues/590" target="_blank" rel="noopener noreferrer">#590</a>)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Close more gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Attend the Cardano Summit in Lausanne. Hydra will be topic of one talk! Save the date+time: <strong>&quot;Developing Hydra&quot; on Day 2, Nov 21st, 13:50 CET</strong></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-04-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team first re-deployed the latest Hydra scripts to the re-spun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a>. They also completed implementation of <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a> and worked on the validators, but development got impacted by some CI flakyness. The team also met to discuss hard forks &amp; protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a> and alignment of the specification document with auditors.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete and merge ADR18 <a href="https://github.com/input-output-hk/hydra-poc/pull/579" target="_blank" rel="noopener noreferrer">#579</a></li><li>Re-deploy hydra scripts to respun <code>preview</code> network, see <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer">0.8.0 release notes</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/595" target="_blank" rel="noopener noreferrer">#595</a></li><li>Have first gap of <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a> in review.</li><li>Non-achievement: Flaky CI for TUI was impacting us, so we investigated this a lot.</li><li>Engineering meeting to discuss hard forks and protocol parameter updates <a href="https://github.com/input-output-hk/hydra-poc/issues/195#issuecomment-1300503557" target="_blank" rel="noopener noreferrer">#195</a></li><li>Met the internal audit team on the specification to set scope, expectations and collected requirements/open questions.</li><li>Drafted project scope for an external audit RFP.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Answer the internal auditor<!-- -->’<!-- -->s questions</li><li>Have a draft RFP ready for a first review internally</li><li>Close some gaps <a href="https://github.com/input-output-hk/hydra-poc/pull/452" target="_blank" rel="noopener noreferrer">#452</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team completed several user experience improvements to the
+<code>hydra-tui</code> and <code>hydra-node</code>, and delivered a first version of persisted head
+states by publishing release version
+<a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>.
+Besides this, they met with researchers on topic of the HeadV1 specification and
+kicked-off work on the RFP for an external audit of the Hydra Head protocol and implementation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the UX improvements on the <code>hydra-tui</code></li><li>Released version <a href="https://github.com/input-output-hk/hydra-poc/releases/tag/0.8.0" target="_blank" rel="noopener noreferrer"><code>0.8.0</code></a>, which delivers a first version of persisted head states</li><li>Met with researchers on the HeadV1 specification</li><li>Started work on the RFP for our external audit</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete ADR18 implementation and get it merged</li><li>Start work on event-sourced persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/580" target="_blank" rel="noopener noreferrer">#580</a></li><li>Have a first plutus script gap closed <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Revamp CI to use flakes and build macos artifacts (stretch goal: migrate to cicero for nix builds)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-21T00:00:00.000Z" itemprop="datePublished">October 21, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team reviewed and addressed several open comments on the
+new HeadV1 specification, completing a list the of identified gaps between
+specification and implementation while doing so. In the wake of the recent
+demonstration of SundaeSwap running their DEX in a Hydra Head, they met with
+them to capture feature ideas &amp; incorporate their feedback on the roadmap, as
+well as potential research avenues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h3><ul><li>Had the monthly review meeting, a bit earlier than expected: <a href="https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022" target="_blank" rel="noopener noreferrer">https://input-output.atlassian.net/wiki/spaces/HYDRA/pages/3650813953/Monthly+report+-+October+2022</a></li><li>Reviewed and addressed several open comments on HeadV1 specification.</li><li>Completed the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Had two meetings with SundaeSwap to incorporate their feedback (on research and on the roadmap).</li><li>Some small fixes on TUI and our docker images. <a href="https://github.com/input-output-hk/hydra-poc/issues/538" target="_blank" rel="noopener noreferrer">#538</a> <a href="https://github.com/input-output-hk/hydra-poc/pull/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Met with the internal audit team and clarified scope.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h3><ul><li>Complete the last two items required for a version <code>0.8.0</code>.</li><li>Cut the next release, version <code>0.8.0</code></li><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the hydra team worked on implementing ADR18 to get backup &amp; restore functionality of the <code>hydra-node</code> over the line. Although not fully there yet, an early version of that feature was already needed and succesfully tested by SundaeSwap in their recent demonstration of their DEX running on Hydra. The team also worked on the updated specificaton, met with the researchers and discussed a solution for how to secure rollbacks &quot;past the opening of a Head&quot;. We also reponded to recent requests for static executables and prioritized that feature higher, implemented it and merged it.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Last week we thought we were done with <a href="https://hydra.family/head-protocol/adr/18/" target="_blank" rel="noopener noreferrer">ADR18</a>, but were not ...</li><li>... instead, SundaeSwap has been preparing their Rare bloom Hydra demo &amp; needed assistence.</li><li>Implemented a first version for persistence <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> in response.</li><li>Enhanced CI to publish test results <a href="https://hydra.family/head-protocol/benchmarks/tests/hydra-node/hspec-results" target="_blank" rel="noopener noreferrer">on our website</a></li><li>Engineering meeting -&gt; discussed rollbacks and discovered a solution for the rollback past open problem!</li><li>Pulled static executable feature <a href="https://github.com/input-output-hk/hydra-poc/issues/200" target="_blank" rel="noopener noreferrer">#200</a> into scope, implemented it and merged it!</li><li>Received and read through a project proposal by a vendor (building a Hydra platform).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Get backup/recovery <a href="https://github.com/input-output-hk/hydra-poc/issues/187" target="_blank" rel="noopener noreferrer">#187</a> done with proper event sourcing (ADR18)</li><li>Cut the next release, version <code>0.8.0</code></li><li>Address open comments on specification document &amp; complete the list of identified gaps between specification and implementation <a href="https://github.com/input-output-hk/hydra-poc/issues/452" target="_blank" rel="noopener noreferrer">#452</a></li><li>Have the CI build macos artifacts</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/10"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-20-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-20T00:00:00.000Z" itemprop="datePublished">October 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on preparing a masterclass and workshop for #CardanoSummit2023.</p><p>In addition, they improved the Hydra node API&#x27;s submit-transaction endpoint to accept three different encoding types: Base16 encoded CBOR string, TextEnvelope type, and JSON.
+This improvement offers users greater flexibility and ease of interaction with the API.</p><p>Finally, the team has followed up on the TUI brick upgrade to version 1.10.
+This effort has resulted in addressing minor details and enhancing the overall user experience with the TUI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>More TUI fixes and improvements.<ul><li><a href="https://github.com/input-output-hk/hydra/pull/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li><a href="https://github.com/input-output-hk/hydra/issues/1120" target="_blank" rel="noopener noreferrer">#1120</a></li></ul></li><li>Upgrade GHC from 9.2.8 -&gt; 9.6.2 <a href="https://github.com/input-output-hk/hydra/pull/1105" target="_blank" rel="noopener noreferrer">#1105</a></li><li>Solved user issue related to submitting transactions in cbor format <a href="https://github.com/input-output-hk/hydra/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a>.</li><li>Fix hydraw connection issue making it more stable <a href="https://github.com/input-output-hk/hydra/pull/1121" target="_blank" rel="noopener noreferrer">#1121</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team&#x27;s primary focus was on finalizing the new network resilience layer. This involved adding persistency to ensure data integrity.</p><p>They also completed the exploration of potentially moving the Plutus validator scripts to Aiken.</p><p>Additionally, the team dedicated some attention to our TUI by upgrading the Brick framework. They also undertook a comprehensive refactoring of the project&#x27;s structure and addressed various bug fixes. These efforts are aimed at enhancing the overall user experience of our project.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Network Resilience Persistence (#1101)<!-- -->[https://github.com/input-output-hk/hydra/pull/1101]<!-- -->.</li><li>Upgrade brick on TUI (#1103)<!-- -->[https://github.com/input-output-hk/hydra/pull/1103]<!-- -->.</li><li>Aiken commit validator translation (#1072)<!-- -->[https://github.com/input-output-hk/hydra/pull/1072]<!-- -->.</li><li>Fixed some bugs in our TUI client.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Prepare presentation and workshop for Cardano Summit.</li><li>Work on hydra-poll dApp for Cardano summit.</li><li>Start the work on packaging hydra-node and related services.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-06-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.13.0, which includes fixes and extensions for state persistency and the ability to draft a commit transaction using inline datums.</p><p>The team also delivered the first version of the network resilience layer, significantly increasing head availability.</p><p>Additionally, they have been providing support to several funded Catalyst projects that want to build on Hydra.</p><p>Last but not least, they updated and published security policy and vulnerability disclosure policy reports on how to handle security vulnerabilities within Hydra.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Release <a href="https://github.com/input-output-hk/hydra/releases/tag/0.13.0" target="_blank" rel="noopener noreferrer">0.13.0</a></li><li>Published vulnerability reports <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Merged network resilience work part I <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li><li>Planning for Cardano Summit participation </li><li>Discussions with funded Catalyst projects wanting to build on Hydra for support</li><li>Merged typos fix PR from @omahs <a href="https://github.com/input-output-hk/hydra/pull/1095" target="_blank" rel="noopener noreferrer">#1095</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete Aiken commit validator script <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete Kupo integration <a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Brick upgrade on TUI <a href="https://github.com/input-output-hk/hydra/pull/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Clean backlog</li><li>Prepare and rehearse demo and talk for Cardano Summit</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team mainly focused on having a working new reliability
+network layer; and specified its expected behavior in a new ADR.</p><p>They also revisited the security policy and vulnerability disclosure policy on
+how to handle security vulnerability within Hydra, and in particular how to
+handle so-called &quot;Silent fixes&quot;.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated security policy and vulnerability disclosure policy <a href="https://github.com/input-output-hk/hydra/pull/1088" target="_blank" rel="noopener noreferrer">#1088</a></li><li>Adr/network reliability <a href="https://github.com/input-output-hk/hydra/pull/1082" target="_blank" rel="noopener noreferrer">#1082</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Introduce reliability network layer <!-- -->[#1074]<!-- --> (<a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/hydra/pull/1074</a>)</li><li>Refactor the vCommit validator in Aiken <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-22-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting in
+collaboration with Mithril, enhancing project coordination.</p><p>The team improved the gen-hydra-key node command for smoother usability
+and identified concrete steps to enhance network resiliency in feature
+items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a>, and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a>.
+Additionally, they contributed the aiken-mode editor integration to the
+aiken-lang organization, updated dependencies to utilize cardano-api
+8.20, and published the Hydra security advisory CVE-2023-42806 with a
+workaround available for users.</p><p>These efforts demonstrate the team\&#x27;s commitment to project improvement,
+security, and open-source community collaboration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Conducted the monthly review meeting together with Mithril</li><li>Improved gen-hydra-key node command
+<a href="https://github.com/input-output-hk/hydra/pull/1077" target="_blank" rel="noopener noreferrer">#1077</a></li><li>Established a clear plan to improve resiliency of network and manifested
+feature items <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a>,
+<a href="https://github.com/input-output-hk/hydra/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1079" target="_blank" rel="noopener noreferrer">#1079</a></li><li>Moved <a href="https://github.com/aiken-lang/aiken-mode" target="_blank" rel="noopener noreferrer">aiken-mode</a> (created by SN)
+to aiken-lang organization</li><li>Updated dependencies to using cardano-api 8.20
+<a href="https://github.com/input-output-hk/hydra/pull/1075" target="_blank" rel="noopener noreferrer">#1075</a></li><li>Published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(workaround available)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Write-up the monthly report for September</li><li>Finish &quot;network resilience to disconnects&quot;
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Finish kupo integration with hydra
+<a href="https://github.com/input-output-hk/hydra/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Discuss and decide on using aiken or not</li><li>Address the published security advisory
+<a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-gr36-mc6v-72qq" target="_blank" rel="noopener noreferrer">CVE-2023-42806</a>
+(to not require workaround)</li><li>Ideally, release 0.13.0</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, most of the Hydra team was attending a cardano scaling workshop in
+Nantes, France. They used this oportunity to meet fellow mithril team and spend
+some time together to hack on some code and, as always, reflect on the past work
+and find optimal path forward for both projects. They also fixed a bug that
+caused hydra-node to crash when querying L1, worked on a new network resillience
+proof-of-concept and accepted a new ADR related to stateless transaction
+observation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Cardano scaling workshop with members of hydra and mithril teams </li><li>Accepted user contribution for possible new use-case <a href="https://github.com/input-output-hk/hydra/pull/1048" target="_blank" rel="noopener noreferrer">#1048</a></li><li>Fix for the hydra-node crash related to internal wallet query <a href="https://github.com/input-output-hk/hydra/pull/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Collected experimental CI findings <a href="https://github.com/input-output-hk/hydra/pull/1070" target="_blank" rel="noopener noreferrer">#1070</a></li><li>Propose first POC for the network resilience <a href="https://github.com/input-output-hk/hydra/pull/1074" target="_blank" rel="noopener noreferrer">#1074</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting &amp; report including updates from Mithril</li><li>Review POC and discuss our options for the network resilience</li><li>Update cardano-api to version 8.20</li><li>Address TODOs on aiken commit validator <a href="https://github.com/input-output-hk/hydra/pull/1072" target="_blank" rel="noopener noreferrer">#1072</a></li><li>Complete hydra-support in kupo <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">kupo#117</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-08-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-08T00:00:00.000Z" itemprop="datePublished">September 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team improved the commit process with support for inline
+datums. They simplified the chain layer by refactoring how the chain state is
+persisted. Updates to the Hydra tutorial were completed, including CI workflows
+to keep it up-to-date. The team engaged in discussions with researchers about
+incremental commits &amp; decommits, and drafted an architectural decision record
+for a resource-based API. They also explored simpler solutions for the upcoming
+network resilience feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Support InlineScriptDatum in commit
+<a href="https://github.com/input-output-hk/hydra/issues/1043" target="_blank" rel="noopener noreferrer">#1043</a></li><li>Refactored chain state persistency
+<a href="https://github.com/input-output-hk/hydra/pull/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed tutorial updates (by adding CI and some cleanup)
+<a href="https://github.com/input-output-hk/hydra/issues/997" target="_blank" rel="noopener noreferrer">#997</a></li><li>Intersect Open Source committee meeting</li><li>Experimented with various models to better express the \&quot;Network
+resilience problem\&quot; to find a KISS solution for
+<a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Drafted and discussed incremental de-/commit features within team
+and with researchers
+<a href="https://github.com/input-output-hk/hydra/issues/199" target="_blank" rel="noopener noreferrer">#199</a> and
+<a href="https://github.com/input-output-hk/hydra/issues/1057" target="_blank" rel="noopener noreferrer">#1057</a></li><li>Created ADR for a resource based overhaul of the API
+<a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Meetup of Hydra &amp; Mithril contributors in Nantes, France</li><li>Integrated cardano-api 8.15 to have GHC 9.6 support</li><li>A clear design for incremental commits (decommits are already
+understood)</li><li>An ADR for improving tx construction &amp; observation to not need chain
+state</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused primarily on changes needed in the network
+layer and have the first draft document related to needed design. They also
+improved the user experience by allowing a commit using inline datums.
+Discussed the off-chain governance with researchers and improved internal model
+tests. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report published</li><li>Small changes to hydraw and tutorial in light of the Masterclass</li><li>Investigated a bug and saw it was solved by recent developments</li><li>Improved the model tests by fully validating L1 transactions</li><li>Enhanced the /commit API to also allow commit from scripts with inline datums (user request)</li><li>Discussed off-chain governance with IOG and CF researchers</li><li>Drafted a first network specification document in the context of Network resilience</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a clear understanding of the changes we need for the &quot;Improve network resiliency&quot; feature</li><li>Groomed and agreed plan on incremental commits/decommits</li><li>Updated tutorials including CI workflows to check consistency</li><li>Update to GHC 9.6 and latest cardano dependencies (ledger/plutus)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-25-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-25T00:00:00.000Z" itemprop="datePublished">August 25, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team conducted the monthly review meeting for Agust,which
+continously ensures transparent communication and project evaluation.</p><p>In terms of community engagement, the Hydra team gave a Hydra master-class at
+RareEvo workshop as an educational initiative for the community.
+Additionally, the team updated the Hydra demo and tutorial to include Mithril
+and latest release changes.</p><p>They also focused on exploring the Hydra network resiliance in order to improve
+<code>hydra-node</code> availability, as it becomes stuck very easily and that leads to a
+bad user experience.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Hydra master-class at RareEvo workshop!</li><li>Monthly report &amp; review meeting</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Groomed network resilience and explorer features <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>New ADR for “Resourced based API” <a href="https://github.com/input-output-hk/hydra/pull/1028" target="_blank" rel="noopener noreferrer">#1028</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have a poc on network resilience working <a href="https://github.com/input-output-hk/hydra/issues/188" target="_blank" rel="noopener noreferrer">#188</a></li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/931" target="_blank" rel="noopener noreferrer">#931</a>: “Chain state in head state not updated on replayed observation”</li><li>Fix issue <a href="https://github.com/input-output-hk/hydra/issues/1039" target="_blank" rel="noopener noreferrer">#1039</a>: &quot;Close transaction dropped from cardano-node&quot;</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version 0.12.0, a significant update that
+brings support for cardano-node 8.1.2, along with performance enhancements and
+various API improvements. Additionally, the team successfully onboarded a new
+contributor who is now actively participating in operating a Hydra Head. They
+took part in a meeting of the Intersect open source committee and prepared the
+Hydra master-class for RareEvo, an educational initiative for the community.</p><p>If you happen to be at RareEvo, register for the Hydra master-class <a href="https://docs.google.com/forms/d/1Q9KIxwKeyZeNrKDBiYWceYjnbxIxaEwC8Eo5LWxSa2g/viewform?edit_requested=true" target="_blank" rel="noopener noreferrer">using this
+form</a>.
+We hope to make it possible to follow along on-line as well and will announce
+details on the Hydra announcements channel on the <a href="https://discord.gg/Qq5vNTg9PT" target="_blank" rel="noopener noreferrer">IOG discord
+server</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released version 0.12.0 which adds support for cardano-node 8.1.2, performance
+and several API improvements. <a href="https://github.com/input-output-hk/hydra/releases/tag/0.12.0" target="_blank" rel="noopener noreferrer">Release notes</a></li><li>Replaced commit via websocket with external draft + submit. <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Onboarded new contributor to the point where he actively participates in operating a Head now.</li><li>Joined a first meeting of the Intersect open source committee</li><li>Prepared the Hydra master-class for RareEvo.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting</li><li>Run the Hydra master-class at RareEvo!</li><li>Updated Hydra tutorial including Mithril and re-record demo/tutorial stuff</li><li>Clear out red bin items (technical debt)</li><li>Groom network resilience and explorer features</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-11-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated <code>hydra-node</code> to support <code>cardano-node</code> version
+8.1.2, ensuring compatibility with the latest mainnet release. The team also
+participated in discussions about a &quot;cardanonical&quot; JSON schema and added it as a
+submodule to the project, contributing to improved data modeling and
+interoperability.</p><p>In terms of community engagement, the team successfully onboarded a new
+contributor, also participated in a RareEvo Twitter space, and continued
+preparations for the Hydra master-class.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated dependencies to support cardano-node 8.1.2 <a href="https://github.com/input-output-hk/hydra/issues/1007" target="_blank" rel="noopener noreferrer">#1007</a></li><li>Engaged in discussions about a <!-- -->“<!-- -->cardanonical<!-- -->”<!-- --> json schema and
+add it as submodule to the project
+<a href="https://github.com/input-output-hk/hydra/pull/1013" target="_blank" rel="noopener noreferrer">#1013</a></li><li>Onboarded a new contributor to the hydra project (@locallycompact)</li><li>Joined RareEvo twitter space and continued preparation of hydra master-class</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li><li>Remove the internal commit functionality <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Release 0.12.0</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved notable progress in various aspects of the
+project. The team updated the use case section for auctions on the <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a>
+branch of the website, improving the understanding of Hydra<!-- -->’<!-- -->s applicability.</p><p>From the development side, the team successfully completed event-sourced
+persistence, a key enhancement in the project<!-- -->’<!-- -->s architecture which improves
+off-chain transaction processing performance. They also added a
+<!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API.</p><p>In addition to project-related progress, the team actively engaged in community
+reviews for several catalyst proposals related to Hydra and Mithril,
+contributing to the wider Cardano ecosystem.</p><p>Finally, the full report for the month of July was also published <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-07" target="_blank" rel="noopener noreferrer">monthly report for July</a></li><li>Updated the use case section for auctions (published on <a href="https://hydra.family/head-protocol/unstable/use-cases/" target="_blank" rel="noopener noreferrer">/unstable</a> branch)</li><li>Completed event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Added a <!-- -->“<!-- -->submit-transaction<!-- -->”<!-- --> endpoint to the API <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Community reviews for several catalyst proposals related to Hydra and Mithril</li><li>Created a network testing tool (hydra-net) <a href="https://github.com/input-output-hk/hydra/pull/1006" target="_blank" rel="noopener noreferrer">#1006</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update hydra-node to work with cardano-node version 8.x</li><li>Remove the internal commit functionality</li><li>Release version 0.12.0</li><li>Update &amp; streamline tutorial to work with latest version of hydra-node</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-28-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-28T00:00:00.000Z" itemprop="datePublished">July 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During this week, the Hydra team achieved significant progress in various areas.
+They conducted the monthly review meeting for July, which continously ensures
+transparent communication and project evaluation. The team migrated the core
+logic of the node to an event-sourced architecture and incremental writes of
+events to persistence, enhancing the project<!-- -->’<!-- -->s performance and maintainability.
+Furthermore, the team added the ability to read protocol parameters via the API
+and fixed the CI workflows to support pull requests from forks of external
+contributors, streamlining the development process for community involvement.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting for July (<a href="https://drive.google.com/file/d/14ANZ3efuxgXpYK94EBWxZLR9TtN7voru/" target="_blank" rel="noopener noreferrer">recording</a>)</li><li>Migrate the core logic of the node to an event-sourced architecture <a href="https://github.com/input-output-hk/hydra/pull/999" target="_blank" rel="noopener noreferrer">#999</a></li><li>Updated persistence to faster incremental writes of events <a href="https://github.com/input-output-hk/hydra/pull/1000" target="_blank" rel="noopener noreferrer">#1000</a></li><li>Added ability to read protocol parameters via API <a href="https://github.com/input-output-hk/hydra/issues/735" target="_blank" rel="noopener noreferrer">#735</a></li><li>Fix CI workflows to support pull requests from forks of external contributors <a href="https://github.com/input-output-hk/hydra/pull/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Updated to GHC 9.2.8 <a href="https://github.com/input-output-hk/hydra/pull/1005" target="_blank" rel="noopener noreferrer">#1005</a></li><li>Prepared an updated use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a> (published with next release)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Publish monthly report</li><li>Complete user transaction submission work <a href="https://github.com/input-output-hk/hydra/issues/966" target="_blank" rel="noopener noreferrer">#966</a></li><li>Remove commit from internal wallet (deprecated) <a href="https://github.com/input-output-hk/hydra/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team updated the specification to align with recent
+off-chain protocol changes, completed refactoring the snapshot emission
+in preparation for event-sourced protocol logic, and updated to GHC
+9.2.7, resulting in improved compile times and slightly smaller Plutus
+scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Updated the specification to match the recent off-chain protocol
+changes to complete
+<a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Refactored the snapshot emission logic in preparation for event
+sourced protocol logic.</li><li>Updated to GHC 9.2.7, which led to improved compile times and
+slightly smaller plutus scripts.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting next wednesday and July report</li><li>Reflect latest information onto our roadmap.</li><li>Actual implemention of event-sourced persistence
+<a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Update the use cases section on <a href="https://hydra.family" target="_blank" rel="noopener noreferrer">https://hydra.family</a></li><li>Remove deprecated internal commit
+<a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-14T00:00:00.000Z" itemprop="datePublished">July 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the team focused on exploring the event sourced persistence in order
+to improve <code>hydra-node</code> performance. Because of this work the team noticed we
+need to refactor the emit snapshot emission logic and update the spec in the
+light of new changes. They also took the time to revisit their goals and product
+plans for the next quarter as well as doing some security fixes related to
+multisignatures.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished spike about performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/963" target="_blank" rel="noopener noreferrer">#963</a>.</li><li>Refactor snapshot emission in protocol logic.</li><li>Revisited our roadmap and goals.</li><li>Prepared and conducated a learning session on lean-waste.</li><li>Improve security of multi-signature checks, see <a href="https://github.com/input-output-hk/hydra/security/advisories/GHSA-c8qp-cv4h-vcc4" target="_blank" rel="noopener noreferrer">this Github security advisory</a>.</li><li>Implemented a cache friendly way to version our binaries <a href="https://github.com/input-output-hk/hydra/pull/962" target="_blank" rel="noopener noreferrer">#962</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement Event sourced persistence <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a>.</li><li>Remove deprecated internal commit <a href="https://github.com/input-output-hk/hydra/pull/954" target="_blank" rel="noopener noreferrer">#954</a> and close <a href="https://github.com/input-output-hk/hydra/pull/728" target="_blank" rel="noopener noreferrer">#728</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/v0d1ch.png" alt="Sasha Bogicevic"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/v0d1ch" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sasha Bogicevic</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week the Hydra team accomplished some nice progress. They secured the
+network layer further by implementing authentication of the messages between the
+peers in the Head protocol. In the process they also managed to separate
+HeartBeat messages from the protocol ones which somewhat improved the quality of
+code in Hydra. The team also finished work related to sending only transaction
+ids in ReqSn messages, fixed an issue in the smoke tests, and improved benchmark
+publishing on the website.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">Implemented</a> authenticated messages</li><li><a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">Implemented</a> send only transaction ids in ReqSn messages</li><li>Separate <a href="https://github.com/input-output-hk/hydra/pull/969" target="_blank" rel="noopener noreferrer">HeartBeat</a> messages from the core network protocol messages</li><li>Publish multiple pre-defined <a href="https://github.com/input-output-hk/hydra/pull/947" target="_blank" rel="noopener noreferrer">benchmarks</a></li><li><a href="https://github.com/input-output-hk/hydra/pull/967" target="_blank" rel="noopener noreferrer">Fixed</a> a smoke-test issue where funds would not be returned to the faucet</li><li>Found a bug in the <a href="https://github.com/input-output-hk/hydra-ghsa-c8qp-cv4h-vcc4/pull/1" target="_blank" rel="noopener noreferrer">off-chain signature
+verification</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Add new endpoint for submitting client transactions</li><li>Remove commit from internal wallet</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-30-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-30T00:00:00.000Z" itemprop="datePublished">June 30, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team wrote and published the monthly report for June,
+implemented the end-to-end functionality for external commits, and tested it on
+the preview environment. They also listed Hydra as a tool on the Cardano
+developer portal, providing more visibility for the project. The team clarified
+the path forward for L2 protocol improvements and explored an alternative CI
+approach using cabal instead of nix. Additionally, they released version 0.11.0,
+marking another milestone in the project<!-- -->’<!-- -->s development.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Written and published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-06" target="_blank" rel="noopener noreferrer">June</a></li><li>Implemented external commits end-to-end incl. tested it on preview <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li><li>Listed Hydra as a tool on cardano <a href="https://developers.cardano.org/tools/" target="_blank" rel="noopener noreferrer">developer portal</a></li><li>Cleared up path forward on L2 protocol improvements <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Established an alternative CI using more cabal tools <a href="https://github.com/input-output-hk/hydra/pull/923" target="_blank" rel="noopener noreferrer">#923</a></li><li>Release version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.11.0</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Spike on performance improvements of event sourced persistence <a href="https://github.com/input-output-hk/hydra/issues/913" target="_blank" rel="noopener noreferrer">#913</a></li><li>Complete ReqSn only sends transaction ids <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Groom and plan last items for 0.12.0 (remove internal commit)</li><li>Improve reliability of benchmarks</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/pgrange.png" alt="Pascal Grange"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/pgrange" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Pascal Grange</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team shared progress updates during the monthly review
+meeting (monthly report and video recording available soon) and started
+experimenting on preview network with the new commit from external wallet
+feature.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting, demonstrating <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">commit from external
+wallet</a></li><li>Published regular <a href="https://hydra.family/head-protocol/unstable/benchmarks/end-to-end-benchmarks" target="_blank" rel="noopener noreferrer">benchmarks for
+Hydra</a></li><li>Moved forward the journey for external commits using multiple script UTxOs
+<a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Changed the API to only put transaction id in snapshots, instead of the full
+transactions <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a> -&gt; this
+is now evolved into fully addressing <a href="https://github.com/input-output-hk/hydra/issues/728" target="_blank" rel="noopener noreferrer">#728</a></li><li>Fuel marking is now optional as one can now commit from an external wallet
+<a href="https://github.com/input-output-hk/hydra/pull/924" target="_blank" rel="noopener noreferrer">#924</a></li><li>Add flag option to display node version on tui
+<a href="https://github.com/input-output-hk/hydra/pull/934" target="_blank" rel="noopener noreferrer">#934</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>New release 0.11.0</li><li>Dirtroad solution of improved persistence performance <a href="https://github.com/input-output-hk/hydra/pull/913" target="_blank" rel="noopener noreferrer">#913</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-16-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-16T00:00:00.000Z" itemprop="datePublished">June 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused their efforts on continuing to investigate and
+experiment operating a head on mainnet. They collected several bugs and issues
+and worked on fixing them. Now the team is soon to release a new version,
+0.11.0, which comes with a lot of improvements and bug fixes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Restored and fixed a bug which stalled our head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li><li>Solved one user issue <a href="https://github.com/input-output-hk/hydra/issues/914" target="_blank" rel="noopener noreferrer">#914</a></li><li>Reduced significantly local state size and logs by removing the full scripts from it <a href="https://github.com/input-output-hk/hydra/pull/928" target="_blank" rel="noopener noreferrer">#928</a></li><li>(pending review) Reduced snapshot size in the API, by only including tx ids <a href="https://github.com/input-output-hk/hydra/pull/922" target="_blank" rel="noopener noreferrer">#922</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>New release 0.11.0</li><li>Monthly report &amp; review meeting.</li><li>Fix some minor bugs discovered when operating our head on mainnet</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Publish benchmarks and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-09-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-09T00:00:00.000Z" itemprop="datePublished">June 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on multiple fronts. They finished the
+investigation about the broken head on mainnet and re-opened their persistent
+head instance. The team also fixed the monthly report publication on their
+website and started sketching ideas and further improvements. Also, they are on
+the last mile to deliver a new feature which will allow parties to commit funds
+from extern wallets. Finally the team started to work on optimizing the
+performance on their benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Finished investigation on broken head on mainnet <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a> and re-opened it.</li><li>Added support for externally committing regular utxo <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a></li><li>Fix monthly report publication on docs website and published the <a href="https://hydra.family/head-protocol/monthly/2023-05" target="_blank" rel="noopener noreferrer">monthly report</a>. Odd problems when publishing monthly report:<ul><li>Make us think about if we should change something about the website <a href="https://github.com/input-output-hk/hydra/issues/908" target="_blank" rel="noopener noreferrer">#908</a></li><li>Open issue to docusaurus <a href="https://github.com/facebook/docusaurus/issues/9036" target="_blank" rel="noopener noreferrer">#9036</a></li></ul></li><li>Fixed a bug in the benchmark process <a href="https://github.com/input-output-hk/hydra/pull/910" target="_blank" rel="noopener noreferrer">#910</a></li><li>Explored performance of the <code>hydra-node</code>{.verbatim} and identified a
+bottleneck.</li><li>Timed transaction feature is being used by the auction project 🎉 </li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete performance analysis and start/plan improvements and provide
+regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a></li><li>Add hydra as tool to developer platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Complete journey for external commits using multiple script UTxOs <a href="https://github.com/input-output-hk/hydra/pull/903" target="_blank" rel="noopener noreferrer">#903</a></li><li>Start implementing <em>Option B</em> for external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/4"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/6"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-02-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-02T00:00:00.000Z" itemprop="datePublished">June 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has put their effort on finding solutions on many
+different problems, such as our broken head on mainnet
+<a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>, our fragile monthly
+report publications on the website and implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> for
+external commits <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.
+Although most of these items are still open, huge progress has been made. To
+accelerate the investigation, they improved their logging to give more precise
+errors when a transition requirement fails, and to reduce duplication on effets
+logged content. Last but not least, the team is exploring formal methods and
+attended a workshop on formalizing cryptographic protocols in Agda.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li><p>Continued investigating broken head and opened an issue to keep track <a href="https://github.com/input-output-hk/hydra/issues/897" target="_blank" rel="noopener noreferrer">#897</a>.</p><p>As part of this issue, improvements were made to the node logs:</p><ul><li><p>Give a precise error when a transition requirement fails <a href="https://github.com/input-output-hk/hydra/pull/895" target="_blank" rel="noopener noreferrer">#895</a>.</p></li><li><p>Reduce duplication for effects logged content by using sequential eventId and effectId pair  <a href="https://github.com/input-output-hk/hydra/pull/896" target="_blank" rel="noopener noreferrer">#896</a>.</p></li></ul></li><li><p>Fixed references in the hydra specification <a href="https://github.com/input-output-hk/hydra/pull/893" target="_blank" rel="noopener noreferrer">#893</a>.</p></li><li><p>Attended a workshop on formal methods and crypto in Agda.</p></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- --> and start implementing <!-- -->“<!-- -->Option B<!-- -->”<!-- --> <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li><li>Fix monthly report publication on docs website.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team accomplished several important tasks. They held their
+monthly review meeting and drafted the report for May. They made progress on
+implementing the first end-to-end journey for external commits using &quot;Option A&quot;
+for normal UTxOs, while still considering &quot;Option B&quot;. The team also integrated a
+Spanish translation contributed by the community, created micro-benchmarks for
+transaction validation and deserialization, and made improvements to
+hydra-node&#x27;s version reporting. Last but not least, they implemented the ability
+to commit multiple UTxOs to a head at once.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the monthly review meeting (<a href="https://drive.google.com/file/d/1_N6b4RDe579TgLawiJzbE0NLofD3ljE6/view" target="_blank" rel="noopener noreferrer">recording</a> + <a href="https://docs.google.com/presentation/d/1anUC3Z1idloyR6uwiSHLZtV6-LQvUcByHPMUgCBOVIA" target="_blank" rel="noopener noreferrer">slides</a>) &amp; drafted the report for May.</li><li>Have a first end-to-end journey for external commits implementing <!-- -->“<!-- -->Option A<!-- -->”<!-- -->
+for normal UTxOs <a href="https://github.com/input-output-hk/hydra/pull/887" target="_blank" rel="noopener noreferrer">#887</a> (still considering <!-- -->“<!-- -->Option B<!-- -->”<!-- -->).</li><li>Integrated the spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Created micro-benchmarks for transaction validation and deserialization <a href="https://github.com/input-output-hk/hydra/pull/884" target="_blank" rel="noopener noreferrer">#884</a>.</li><li>Improve hydra-node <!-- -->–<!-- -->version reporting on non-released builds <a href="https://github.com/input-output-hk/hydra/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Some minor CI improvements following up last weeks changes.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Investigate and re-open our team-internal head on mainnet.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Complete external commits with script UTxOs <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Authenticate network messages <a href="https://github.com/input-output-hk/hydra/issues/727" target="_blank" rel="noopener noreferrer">#727</a>.</li><li>Add hydra as tool to developr platform <a href="https://github.com/input-output-hk/hydra/issues/872" target="_blank" rel="noopener noreferrer">#872</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-19-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-19T00:00:00.000Z" itemprop="datePublished">May 19, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has worked on several fronts, including improvements of their CI speed, logs, documentation pages and adding the support for timed transactions. They also updated the &quot;Coding Standards&quot; for the project, improved the troubleshooting page on their website and wrote a section about how to operate a hydra node. Finally the team completed a feature request that allows clients to submit and validate transactions to their hydra nodes using time validity ranges, ensuring isomorphism with L1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a>.</li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs.</li><li>Remove <code>--ledger-genesis</code> argument to hydra-node options <a href="https://github.com/input-output-hk/hydra/pull/863" target="_blank" rel="noopener noreferrer">#863</a>.</li><li>Fix issue with garbage collected caches by using a new cardano-scaling.cachix in more workflows <a href="https://github.com/input-output-hk/hydra/pull/877" target="_blank" rel="noopener noreferrer">#877</a>.</li><li>Use nix to build test binaries to increase CI speed <a href="https://github.com/input-output-hk/hydra/pull/867" target="_blank" rel="noopener noreferrer">#867</a>.</li><li>Updated our <a href="https://github.com/input-output-hk/hydra/wiki/Coding-Standards" target="_blank" rel="noopener noreferrer">Coding Standards</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly report &amp; review meeting.</li><li>Have a first end-to-end journey for external commits implementing &quot;Option A&quot; <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a>.</li><li>Integrate spanish translation <a href="https://github.com/input-output-hk/hydra/pull/866" target="_blank" rel="noopener noreferrer">#866</a>.</li><li>Improve and provide regular benchmarks for Hydra <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a>.</li><li>Allow commit transactions with multiple UTxO <a href="https://github.com/input-output-hk/hydra/pull/774" target="_blank" rel="noopener noreferrer">#774</a>.</li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team achieved a number of milestones, including the release
+of the first mainnet compatible version. Besides this they also addressed
+inconsistencies in rollback handling, added an architecture page to the website,
+reducing the size of logs using event IDs. They also had productive discussions
+with researchers on plans for incremental commits/decommits and had a whiteboard
+session on DeFi and lending protocols. The goals for next week include
+completing the validation of the timed transactions feature, exploring stateless
+observation, refining the Hydra explorer ticket, writing ops instructions and
+troubleshooting, and implementing the first end-to-end journey for external
+commits.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Released first mainnnet compatible version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.10.0" target="_blank" rel="noopener noreferrer">0.10.0</a></li><li>Addressed inconsist handling of rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Added <a href="https://hydra.family/head-protocol/core-concepts/architecture/" target="_blank" rel="noopener noreferrer">architecture page</a> and fixed haddock links on our website <a href="https://github.com/input-output-hk/hydra/pull/838" target="_blank" rel="noopener noreferrer">#838</a></li><li>Opened a new hydra head on mainnet</li><li>Talked with researchers on initial plan for incremental commits/decommits</li><li>Had a Whiteboard session on DeFi and lending protocols</li><li>Reduced size of logs using event ids <a href="https://github.com/input-output-hk/hydra/pull/859" target="_blank" rel="noopener noreferrer">#859</a></li><li>Published the <a href="https://hydra.family/head-protocol/monthly/2023-04" target="_blank" rel="noopener noreferrer">monthly report for April</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete validation of timed transactions feature <a href="https://github.com/input-output-hk/hydra/issues/196" target="_blank" rel="noopener noreferrer">#196</a></li><li>Explored stateless observation and refined hydra explorer ticket <a href="https://github.com/input-output-hk/hydra/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Write <!-- -->“<!-- -->ops<!-- -->”<!-- --> instructions and troubleshooting <a href="https://github.com/input-output-hk/hydra/issues/569" target="_blank" rel="noopener noreferrer">#569</a> and improve logs</li><li>Have a first end-to-end journey for external commits implemented <a href="https://github.com/input-output-hk/hydra/issues/215" target="_blank" rel="noopener noreferrer">#215</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-27T00:00:00.000Z" itemprop="datePublished">April 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team held their Monthly review meeting and drafted the
+report which likely is published next week. They put the spec into the
+repository and website, addressed a user issue and fixed the TUI peer list.
+Furthermore, they updated dependencies, conducted a Twitter space on Auctions
+use cases, covered the rollback bug with tests and implemented a solution.
+Looking ahead, their goals for next week include releasing 0.10.0, implementing
+timed transactions support, writing a Query API ADR, and grooming work items
+like off-chain benchmarks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Held the Monthly review meeting and drafted the report (to be published next week)</li><li>Added the spec into the repository
+<a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and published on
+<a href="https://hydra.family/head-protocol/unstable/core-concepts/specification" target="_blank" rel="noopener noreferrer">the
+website</a></li><li>Groom and addressed user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Covered the rollback bug with tests and implemented a solution (to be reviewed) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Fixed the TUI peer list</li><li>Updated dependencies to match <code>cardano-node</code> master</li><li>Conducted a twitter space on Auctions use cases</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Release 0.10.0</li><li>Support timed transactions solution drafted and validated API with users</li><li>Write Query API ADR and groom a concrete step</li><li>Groom and solve <code>PostTxOnChainFailed</code> UX problem <a href="https://github.com/input-output-hk/hydra/issues/832" target="_blank" rel="noopener noreferrer">#832</a></li><li>Groom off-chain benchmarks idea <a href="https://github.com/input-output-hk/hydra/issues/186" target="_blank" rel="noopener noreferrer">#186</a> and turn it into a <!-- -->“<!-- -->feature<!-- -->”</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/5"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/7"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-21-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team worked on several fronts, including fixing state
+machine continuity on-chain, discussing voting project solutions, exploring
+adding Hydra support to kupo, and improving API navigation with a sidebar. The
+team also updated dependencies and fixed issues in their test suites. Moving
+forward, the team plans to hold the next monthly review meeting, address a user
+issue, prepare for the 0.10.0 release, and work on a dirt road fix for the
+rollbacks issue with proper test coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Fixed scripts to enforce state machine continuity on-chain <a href="https://github.com/input-output-hk/hydra/pull/777" target="_blank" rel="noopener noreferrer">#777</a>.</li><li>Took part in a twitter space on <a href="https://twitter.com/thepizzaknight_/status/1647833904282320896" target="_blank" rel="noopener noreferrer">“<!-- -->Scaling Cardano<!-- -->”</a>.</li><li>Joined a CBIA meeting to discuss Cardano network protocols &amp; how to specify them.</li><li>Discussed potential solutions of ensuring vote uniqueness in the voting project.</li><li>Updated dependencies to match <code>cardano-node</code> master to prepare for upcoming releases and hard-forks</li><li>Explored adding Hydra <a href="https://github.com/CardanoSolutions/kupo/pull/117" target="_blank" rel="noopener noreferrer">support to kupo</a>, a lightweight Cardano chain indexer - some more work required.</li><li>Improved navigation of the API Reference with a sidebar, see <a href="https://hydra.family/head-protocol/unstable/api-reference/" target="_blank" rel="noopener noreferrer">unstable API version</a>.</li><li>Fixed two things in our test suites (random port conflicts and an arithmetic underflow in smoke test)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting (join via <a href="https://discord.gg/inputoutput?event=1097863746216538194" target="_blank" rel="noopener noreferrer">Discord</a> or <a href="https://www.addevent.com/event/ck16794110" target="_blank" rel="noopener noreferrer">AddEvent</a>) &amp; report</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a> properly covered by a test.</li><li>Groom and ideally address user issue <a href="https://github.com/input-output-hk/hydra/issues/823" target="_blank" rel="noopener noreferrer">#823</a>.</li><li>Put the spec into the repo <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a> and prepare release 0.10.0.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-14-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-14T00:00:00.000Z" itemprop="datePublished">April 14, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team focused on improving the smoke test, fixing developer
+tooling, and improving the API for voting use cases. They reviewed progress on
+auction, payments, and voting projects and made worked on reproducing a bug with
+handling rollbacks. Moving forward, the team plans to update dependencies,
+implement a dirt road fix for the rollbacks bug, and explore adding Hydra
+support to kupo.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Reviewed progress on auction, payments and voting projects</li><li>Improved smoke tests so they can run on mainnet</li><li>Fixed a regression in the development environment and updated cardano-node
+used in tests</li><li>Improved API with more configurability to unblock voting use case<ul><li>Exclude utxo in <code>SnapshotConfirmed</code> outputs <a href="https://github.com/input-output-hk/hydra/pull/808" target="_blank" rel="noopener noreferrer">#808</a></li><li>Addressed a user request by only sending <code>Greetings</code> once <a href="https://github.com/input-output-hk/hydra/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li></ul></li><li>Reproduced the rollback bug by improving our model-based test suite <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Update dependencies to match <code>cardano-node</code> master</li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Update Hydraw to maintain state locally</li><li>Explore adding Hydra support to kupo</li><li>Put disclaimer texts and closing mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-07-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-07T00:00:00.000Z" itemprop="datePublished">April 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team published the monthly report for March, created
+separate links for different versions of documentation, and clarified potential
+solutions for the Rollbacks bug. The team also discussed Query API requests for
+the Hydra Voting project and met with community members to answer questions
+about Hydra. Moving forward, the team plans to integrate the specification into
+the repository, implement a short-term fix for the Rollbacks issue, and draft a
+Query API ADR.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Published monthly reports on <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">website</a></li><li>Separate last released and latest versions of docs (e.g. normal <a href="https://hydra.family/head-protocol/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">released</a> vs. <a href="https://hydra.family/head-protocol/unstable/core-concepts/behavior/#replay-of-past-server-outputs" target="_blank" rel="noopener noreferrer">/unstable</a>)</li><li>Discussed Query API concerns from Hydra Voting project (<a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">link</a>)</li><li>Clarified rollbacks bug and defined possible solutions (short and long term) <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Met with community members to answer questions about Hydra</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Finally get the docs integrated into the repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Dirt road fix for rollbacks <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Disclaimer text and detail known issues about mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra continued work on finishing mainnet compatibility. The
+semi-automated smoke tests and some missing documentation is still preventing
+from calling that fully done. They fixed smaller issues and made a step in the
+Head protocol more robust. Besides development, they met with interested people
+from the community who want to get started collaborating on communication and
+marketing materials.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Groomed and followed-up on <code>GetUTxO</code> user request discussion <a href="https://github.com/input-output-hk/hydra/discussions/797" target="_blank" rel="noopener noreferrer">#797</a></li><li>Fixed <code>hydra-node</code> crashes after forks <a href="https://github.com/input-output-hk/hydra/issues/560" target="_blank" rel="noopener noreferrer">#560</a></li><li>Made <code>collectCom</code> more robust and aligned with spec <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Completed configurable API feature <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Met potential contributors about Hydra communication and marketing materials</li><li>Versioned documentation: we have a <code>unstable</code> bleeding edge version available as well now, seperate from the last released version</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> (documentation updates)</li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-24T00:00:00.000Z" itemprop="datePublished">March 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra had a team workshop and conducted the monthly review
+meeting for March. They demonstrated a Hydra Head on mainnet, which was running
+the hydraw demo application. While this marks an important milestone, they also
+emphasized that more features are still to be added as needed for applications
+to run on Hydra. Besides this, the roadmap is getting cleaned up to encourage
+discussions and provide more space for user requests.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting <a href="https://docs.google.com/presentation/d/1yZ4AqUQ8OBMG9ARMYvj3IOjaIAqglf7kZei4vsLMrbs/edit#slide=id.g1f87a7454a5_0_1392" target="_blank" rel="noopener noreferrer">slides</a>/<a href="https://drive.google.com/file/d/1krzM8VN-gpKTtpVdC2JQx-lGti-4gKQS/view?ts=641b3c1c" target="_blank" rel="noopener noreferrer">recording</a>, full report of March next week<ul><li>Opened a head on mainnet with hydraw demonstration</li><li>Hydra pay updates</li></ul></li><li>Team workshop in Austria<ul><li>Hydra presentation at the Cardano Foundation in Zurich</li><li>In-person grooming session, marked many items as candidates to be rather :idea: dicussions</li><li>Improved head protocol <a href="https://github.com/input-output-hk/hydra/pull/786" target="_blank" rel="noopener noreferrer">#786</a> and investigated a potential bug in rollback handling <a href="https://github.com/input-output-hk/hydra/issues/784" target="_blank" rel="noopener noreferrer">#784</a></li><li>Team building and retrospective</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Follow-up on backlog and roadmap clean-up</li><li>Complete mainnet compatibility feature (documentation updates)</li><li>Make API more configurable <a href="https://github.com/input-output-hk/hydra/issues/380" target="_blank" rel="noopener noreferrer">#380</a></li><li>Integrate Hydra specification into repository <a href="https://github.com/input-output-hk/hydra/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/6"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/8"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has continued work on the mainnet compatibility of the
+hydra-node. They added a golden test suite for <code>hydra-plutus</code> scripts, added
+some detection of <code>hydra-node</code> misconfiguration, established a limit of 100 ADA
+per commit and other smaller tasks to prepare for a mainnet beta release.</p><p>Next week there will be a small team workshop to push for demonstrating a Hydra
+Head on the Cardano mainnet, ideally just in time for the monthly review
+meeting. See the hydra channels on the IOG Technical Community discord server
+for details.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Implement a 100 ADA hard-coded commit limit in the hydra-node
+<a href="https://github.com/input-output-hk/hydra/pull/763" target="_blank" rel="noopener noreferrer">#763</a></li><li>Pay back funds to faucet after smoke-test run
+<a href="https://github.com/input-output-hk/hydra/pull/773" target="_blank" rel="noopener noreferrer">#773</a></li><li>Setup custom github runner for smoke-tests on mainnet
+<a href="https://github.com/input-output-hk/hydra/pull/775" target="_blank" rel="noopener noreferrer">#775</a></li><li>Created golden tests to assure the script hash stays the same between
+changes <a href="https://github.com/input-output-hk/hydra/pull/772" target="_blank" rel="noopener noreferrer">#772</a></li><li>Removed hardcoded error codes in plutus scripts
+<a href="https://github.com/input-output-hk/hydra/pull/768" target="_blank" rel="noopener noreferrer">#768</a></li><li>Detect misconfiguration of a hydra-node given persistent state
+<a href="https://github.com/input-output-hk/hydra/pull/767" target="_blank" rel="noopener noreferrer">#767</a></li><li>Met with potential users for hydra-pay</li><li>Prepared hydra workshop</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Hydra monthly meeting</li><li>Open a multi-party head on mainnet</li><li>Complete mainnet compatibility feature</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-10T00:00:00.000Z" itemprop="datePublished">March 10, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team addressed issues with committing complex UTxOs into a
+Hydra Head, prepared the <code>hydra-node</code> to be run on mainnet (soon) and improved
+the test suite of the <code>hydra-plutus</code> scripts. The specification is constantly
+getting improved upon reviewer feedback on overleaf - this week the graphical
+notation was refined to be more transaction-focused.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Clarified <!-- -->“<!-- -->bug<!-- -->”<!-- --> of committing UTxOs with reference scripts to a Hydra head <a href="https://github.com/input-output-hk/hydra/issues/737" target="_blank" rel="noopener noreferrer">#737</a></li><li>Prepare usage of <code>hydra-node</code> on mainnet by updating command line options <a href="https://github.com/input-output-hk/hydra/pull/715" target="_blank" rel="noopener noreferrer">#715</a></li><li>Improved our mutation test suite to all expected errors <a href="https://github.com/input-output-hk/hydra/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li><li>Re-opened our persistent hydraw demo head on <code>preprod</code> using version <code>0.9.0</code></li><li>Updated on-chain graphs to be more transaction-focused in the specification</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete mainnet compatibility feature</li><li>Prepare the Hydra workshop</li><li>Address all todo’s in the Hydra specification</li><li>Unblock the auctions project with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team released version
+<a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a> - a version
+of the <code>hydra-node</code> with fully specified behavior of on-chain scripts and
+off-chain head-logic, decreased costs for opening/closing a Head and scalable
+contestation deadline semantics. Check out the full release notes for details.</p><p>Furthermore, they published the <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">monthly
+report</a> of the Hydra project
+and conducted a review meeting with an increasingly wider audience. The team
+plans to extend invitations through the new Hydra
+<a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> discord channel for the next
+months, stay tuned!</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with report published <a href="https://hydra.family/head-protocol/monthly/2023-03" target="_blank" rel="noopener noreferrer">on website</a></li><li>Fixed smoke tests <a href="https://github.com/input-output-hk/hydra/pull/726" target="_blank" rel="noopener noreferrer">#726</a></li><li>Reduced the cost of opening/closing a Head (error codes <a href="https://github.com/input-output-hk/hydra/pull/748" target="_blank" rel="noopener noreferrer">#748</a> + head reference script <a href="https://github.com/input-output-hk/hydra/pull/701" target="_blank" rel="noopener noreferrer">#701</a>)</li><li>Released version <a href="https://github.com/input-output-hk/hydra/releases/tag/0.9.0" target="_blank" rel="noopener noreferrer">0.9.0</a></li><li>Conducted a first experiment on mainnet compatibility <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a></li><li>New discord category with <a href="https://discord.gg/Bwdy2jNdm2" target="_blank" rel="noopener noreferrer">#announcements</a> channel</li><li>Received a demo about the Hydra for Voting project</li><li>Lightning talk on mutation-based testing (to be shared)</li><li>New <a href="https://github.com/orgs/input-output-hk/projects/21/views/26" target="_blank" rel="noopener noreferrer">themes view</a> in on our roadmap and some rearranging as we align it with high-level objectives</li><li>Clarified things with researchers, but mostly identified action items for them</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Redraw transaction graphs and address TODOs specification</li><li>Run hydraw with 0.9.0 on preprod</li><li>Make smoke tests on mainnet possible</li><li>Groom the explorer item</li><li>Unblock the auctions projecth with <!-- -->“<!-- -->commit from script<!-- -->”<!-- --> a solution</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-24-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-24T00:00:00.000Z" itemprop="datePublished">February 24, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ffakenz.png" alt="Franco Testagrossa"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ffakenz" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Franco Testagrossa</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team continue closing many gaps and aligning the
+implementation with the specification. More over, they have groomed a plan to
+make Hydra Mainnet compatible. Also, they continue moving forward with the
+internal auditing and have published some auditing guidelines to receive
+contributions from the community.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> (what is
+remaining in there)</li><li>Aligned the Head protocol logic implementation with the specification</li><li>Completed full minting policy implementation and spec
+<a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Clarified message authentication with researchers</li><li>Groomed what is left to do for Mainnet compatibility
+<a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">#713</a> and drafted a
+0.10.0 version</li><li>Added a tutorial by <a href="https://github.com/perturbing/" target="_blank" rel="noopener noreferrer">@perturbing</a> to the
+website <a href="https://hydra.family/head-protocol/docs/tutorial/" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Published auditing guidelines
+<a href="https://hydra.family/head-protocol/audit-guidelines" target="_blank" rel="noopener noreferrer">LINK</a></li><li>Made hydra-node work for macos
+<a href="https://github.com/input-output-hk/hydra/issues/746" target="_blank" rel="noopener noreferrer">#746</a> and added support
+for building on aarch64
+<a href="https://github.com/input-output-hk/hydra/issues/673" target="_blank" rel="noopener noreferrer">#673</a></li><li>Met with a potential customer of Hydra for Payments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Have the monthly review meeting incl. the report</li><li>Have smoke tests fixed and running regularly</li><li>Release 0.9.0 with updated scripts</li><li>Redraw transaction graphs for specification</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed work on dealing differently with contests
+during the contestation period. These will now always push out the deadline and
+hence contestation periods are easier to pick (depending on the network a Head
+runs on). Furthermore, they added an important acceptance test and completed
+internal refactoring of the protocol logic making future changes easier.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Push contestation deadline on each contest <a href="https://github.com/input-output-hk/hydra/pull/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Wrote an acceptance (property) test <!-- -->“<!-- -->can always close/fanout when collect is successful<!-- -->”</li><li>Internal refactoring of our <code>HeadLogic</code></li><li>Groomed remaining things from <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a> into dedicated features</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Complete full minting policy <a href="https://github.com/input-output-hk/hydra/issues/720" target="_blank" rel="noopener noreferrer">#720</a></li><li>Release 0.9.0 with updated scripts</li><li>Plan mainnet milestone and a 0.10.0 version</li><li>Redraw transaction graphs for specification (upon feedback)</li><li>Have smoke tests fixed and running regularly</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/7"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/9"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>55 posts tagged with &quot;hydra&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-10-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-10T00:00:00.000Z" itemprop="datePublished">February 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team closed several gaps to align the Hydra scripts
+implementation further with the specification. This also resulted in a slight
+improvement on Hydra script size and costs. They consequently analysed the
+asymptotic complexity of collect and fanout and how they relate. Also plutus-tx
+profiling toolchain was evaluated and set up for future improvements on Hydra
+on-chain performance. In discussions with researchers and internal auditors,
+they also uncovered next steps on further securing the Head protocl using a
+&quot;full&quot; minting policy.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Closed several gaps to align script implementation with specification <a href="https://github.com/input-output-hk/hydra/issues/452" target="_blank" rel="noopener noreferrer">#452</a><ul><li>Allow contest only once <a href="https://github.com/input-output-hk/hydra/pull/680" target="_blank" rel="noopener noreferrer">#680</a></li><li>Optimization through head output at index 0 <a href="https://github.com/input-output-hk/hydra/pull/700" target="_blank" rel="noopener noreferrer">#700</a></li><li>Value is preserved <a href="https://github.com/input-output-hk/hydra/pull/702" target="_blank" rel="noopener noreferrer">#702</a> + optimized exact value equality <a href="https://github.com/input-output-hk/hydra/pull/709" target="_blank" rel="noopener noreferrer">#709</a></li></ul></li><li>Analysed asymptotic complexity of some of our scripts and set up profiling toolchain to <a href="https://github.com/input-output-hk/hydra/pull/721" target="_blank" rel="noopener noreferrer">#721</a><img loading="lazy" src="https://user-images.githubusercontent.com/2621189/218124686-7a85b40d-12f7-4b00-ad16-128c99f5b707.png" class="img_ev3q"></li><li>Fixed our tooling around the Haskell language server</li><li>Discussed full minting policy with researchers</li><li>Started grooming “what we need for mainnet” on <a href="https://github.com/input-output-hk/hydra/issues/713" target="_blank" rel="noopener noreferrer">this</a> idea ticket and <a href="https://github.com/input-output-hk/hydra/milestone/8" target="_blank" rel="noopener noreferrer">milestone</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Implement full minting policy</li><li>All remaining protocol discrepancies are implemented or groomed as individual features</li><li>Ideally release 0.9.0 with updated scripts</li><li>Discuss what we need for mainnet (milestone planning)</li><li>Redraw transaction graphs for specification (upon feedback)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-03-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-03T00:00:00.000Z" itemprop="datePublished">February 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team completed the Hydra specification with a section about
+rollbacks and updated graphs
+(<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>). In a next step,
+the specification will be made more approachable and an open standard. They
+improved their <code>hydra-cluster</code> tool to launch a local <code>--devnet</code> sandbox
+environment and continued aligning the <code>hydra-plutus</code> scripts with the
+specification by hardening the checks on <code>close</code> and <code>contest</code> transactions.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Completed the specification with a section about rollbacks and updated graphs
+<a href="https://github.com/input-output-hk/hydra/issues/448" target="_blank" rel="noopener noreferrer">#448</a>, with a follow-up on making it more approachable and an open standard.</li><li>Continued spec review with internal auditor and incorporated changes.</li><li>Talked to TxPipe about how Demeter and Hydra could work together</li><li>The <code>hydra-cluster</code> executable can be used to launch a local <code>--devnet</code> sandbox environment.</li><li>Reproduced the “head being stuck on network outage” bug<ul><li>relates to what liveness guarantees we can / want to give on the protocol level and needs to be discussed.</li></ul></li><li>Progressed with higher velocity by addressing more and more gaps <a href="https://github.com/input-output-hk/hydra/pull/677" target="_blank" rel="noopener noreferrer">#677</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Upstream our JSON instances to the ledger</li><li>Close all transaction security related on-chain gaps</li><li>Ideally release 0.9.0 with updated scripts</li><li>Groom &amp; plan (or not) protocol changes yielded from specification discussions -&gt; updated roadmap</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-27-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-27T00:00:00.000Z" itemprop="datePublished">January 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team had a monthly review meeting with their stakeholders,
+contributors and interested people from the community. The monthly repot for
+<a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a> is a digest
+of the things presented and also includes a summary of the meeting. The Hydra
+specification was getting discussed and the team is incorporating suggested
+changes of reviewers. Last but not least, they compute and publish script
+information on every PR and also on the
+<a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a>
+now.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had the monthly review meeting with a broader audience</li><li>Published the monthly report for <a href="https://hydra.family/head-protocol/monthly/2023-01" target="_blank" rel="noopener noreferrer">January 2023</a></li><li>Reviewed the spec and discussed individual aborts with researchers</li><li>Compute and publish script information along benchmarks on every PR and <a href="https://hydra.family/head-protocol/benchmarks/transaction-cost/#script-summary" target="_blank" rel="noopener noreferrer">website</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Add rollback section to Hydra spec, update pictures and publish it as part of repository</li><li>Discuss bigger spec findings (full minting policy, individual aborts, split fanout) as change/pull requests on the spec in the repository.</li><li>Groom &amp; plan actions required for a maintainable Head explorer + break down <!-- -->“<!-- -->align gaps<!-- -->”<!-- --> feature.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This week, the Hydra team has been focusing on the write-up of the Hydra HeadV1
+specification. Of which a first version has been aggregated and is currently
+under review. They aligned the on-chain scripts of reimbursing funds on abort
+like defined in the specification, improved the mutation test framework to have
+more control when testing plutus scripts. The added HeadId in the API and the
+TUI example client make <code>hydra-node</code> easier to use and a first experiment of a
+Hydra Head explorer was showing the utility of this - see what Heads exist on
+the <code>preview</code> network <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>HeadId to API and display in the TUI <a href="https://github.com/input-output-hk/hydra/pull/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Experiment of creating a hydra explorer, first result hosted <a href="http://explorer.hydra.family" target="_blank" rel="noopener noreferrer">here</a></li><li>Improved mutation framework allowing to fail for the right reason <a href="https://github.com/input-output-hk/hydra/pull/679" target="_blank" rel="noopener noreferrer">#679</a></li><li>Correctly reimburse funds in abort (matching the spec) <a href="https://github.com/input-output-hk/hydra/pull/670" target="_blank" rel="noopener noreferrer">#670</a></li><li>Finished a first write-up of the Hydra HeadV1 spec: <a href="https://www.overleaf.com/read/bbqzmptcxryj" target="_blank" rel="noopener noreferrer">Read it on overleaf</a> (<a href="https://github.com/input-output-hk/hydra/blob/master/SUPPORT.md" target="_blank" rel="noopener noreferrer">Communication channels</a> for feedback)</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Monthly review meeting with a broader audience</li><li>Groom &amp; plan actions required for a maintainable Head explorer</li><li>Break “align gaps” feature into smaller chunks (at least on- /off-chain) and groom it</li><li>Review the spec &amp; discuss individual aborts with researchers (a bigger open question)</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-hydra">Hydra Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/ch1bo.png" alt="Sebastian Nagel"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/ch1bo" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Sebastian Nagel</span></a></div><small class="avatar__subtitle" itemprop="description">Hydra Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since last weekly update before christmas, the Hydra team worked on the
+technical specification, closed gaps in <code>hydra-plutus</code> scripts, made the unique
+<code>headId</code> available to Hydra clients through the API, allow the <code>hydra-node</code> to
+explicitly synchronize from genesis (if configured), and fixed smaller log and
+build issues reported by new users.</p><p>Besides this, a retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+was published by Matthias Benkort (CF) on Hydra, summarizing our progress made
+in 2022 also an outlook where Hydra is headed for in 2023. Also, the team had
+some first sessions on the voting project with Catalyst and the CF.</p><p>A full digest monthly digest for December 2022 can be found on the <a href="https://hydra.family/head-protocol/monthly/2022-12" target="_blank" rel="noopener noreferrer">hydra
+website</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-did-the-team-achieve-this-week">What did the team achieve this week<a class="hash-link" href="#what-did-the-team-achieve-this-week" title="Direct link to heading">​</a></h2><ul><li>Had some first sessions on the voting project with Catalyst and CF</li><li>Published retrospective <a href="https://cardanofoundation.org/en/news/hydra-head-protocol-an-open-source-solution-for-scalability/" target="_blank" rel="noopener noreferrer">blog
+post</a>
+by Matthias Benkort (CF) on Hydra, summarizing our progress made in 2022 also
+an outlook where Hydra is headed for in 2023.</li><li>Worked on the LaTeX spec for HydraHeadV1, not final or published yet - <a href="https://github.com/ch1bo/hydra-spec" target="_blank" rel="noopener noreferrer">latest
+version in this repository</a>.</li><li>Add unique <code>headId</code> to API and hence make it available to clients.</li><li>Allow <code>hydra-node</code> to explicitly synchronize from genesis using <code>--start-chain-from 0</code>.</li><li>Closed gaps in <code>hydra-plutus</code> scripts<ul><li>bounded transaction validity (<a href="https://hydra.family/head-protocol/adr/21/" target="_blank" rel="noopener noreferrer">ADR21</a>)</li><li>enforcing contract continuity via state token in output</li></ul></li><li>Fixed JSON for some logs and smaller build issues reported by new users.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-are-the-goals-of-next-week">What are the goals of next week<a class="hash-link" href="#what-are-the-goals-of-next-week" title="Direct link to heading">​</a></h2><ul><li>Reach out to have <code>hydra-tutorial</code> integrated.</li><li>Plan the next couple of months.</li><li>Complete checking reimbursing of commits in head validator.</li><li>Align plutus scripts to spec and simplify them (identified some simplifications)</li><li>Improve mutation framework to be sure we fail tests for the right reasons</li><li>Complete the spec except the open points (&lt;5) and also discuss them with researchers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/hydra">hydra</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/hydra/page/8"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/hydra/page/10"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-06T00:00:00.000Z" itemprop="datePublished">December 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This period we reached a major milestone, namely we now have an initial version of Conway
+conformance testing working. We are now able to generate random valid data with the help
+of constraint based testing framework, apply that data to Conway Ledger rules and verify
+that the output matches to the one produced by the executable version of the Formal Ledger
+Specification, when it is applied to the same random data.</p><p>We also had a couple of Conway bugs fixed and a few new predicate check implemented. Get
+Constitutional Committee query is complete and tested. Various improvements to the
+testing tools. Addition of more test cases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3888" target="_blank" rel="noopener noreferrer">pull-3888</a> - Add checks for valid ProtVer when a proposal is a HardFork</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3902" target="_blank" rel="noopener noreferrer">pull-3902</a> - Fix pvCanFollow usage in Conway and improve clarity in Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3855" target="_blank" rel="noopener noreferrer">pull-3855</a> - Remove unreachable proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3903" target="_blank" rel="noopener noreferrer">pull-3903</a> - Add lenient decoder for <code>Addr</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3878" target="_blank" rel="noopener noreferrer">pull-3878</a> - Committee query - implement  next epoch change</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3893" target="_blank" rel="noopener noreferrer">pull-3893</a> - Move <code>tree-diff</code> dependency to tests together with all instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3896" target="_blank" rel="noopener noreferrer">pull-3896</a> - Fix Brute force failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3904" target="_blank" rel="noopener noreferrer">pull-3904</a> - New ListWhere Pred added to the Constrained Solver.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3907" target="_blank" rel="noopener noreferrer">pull-3907</a> - cardano-ledger-conformance: Remove CHANGELOG.md from cabal file</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3883" target="_blank" rel="noopener noreferrer">pull-3883</a> - Committee QuerySpec Imp Test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3909" target="_blank" rel="noopener noreferrer">pull-3909</a> - Make <code>impAnn</code> a bit more useful, by making the logs scoped by <code>impAnn</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3908" target="_blank" rel="noopener noreferrer">pull-3908</a> - Use upstream testing instances for very basic types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3912" target="_blank" rel="noopener noreferrer">pull-3912</a> - Removed call to tail, and the <!-- -->&#x27;<!-- -->watchPulser<!-- -->&#x27;<!-- --> test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3852" target="_blank" rel="noopener noreferrer">pull-3852</a> - Added constrained generators to conformance tests - Part 1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3891" target="_blank" rel="noopener noreferrer">pull-3891</a> - Bump plutus to 1.17</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-22T00:00:00.000Z" itemprop="datePublished">November 22, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Last two weeks progress was mainly on testing, bug fixes and improvements to clarity of
+CDDL specification. Important bugfixes include:</p><ul><li>Fix deserialization of <code>ValueNotConservedUTxO</code> predicate failure that could not
+previously report zero ADA.</li><li>Fix deserialization of <code>CostModels</code> in the <code>PParamsUpdate</code>. Invalid <code>CostModels</code> are no
+longer allowed, only <code>CostModels</code> for unrecognized Plutus versions are allowed starting
+with Conway</li><li>Fix returning of Deposits for ProposalProcedures</li></ul><p>Testing tooling has been improved and new tests have been implemented for Conway era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3858" target="_blank" rel="noopener noreferrer">pull-3858</a> - Restructure computing Refunds and Deposits in a TxBody across all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3860" target="_blank" rel="noopener noreferrer">pull-3860</a> - Removed <code>mock/crypto.cddl</code>, added optional tag to sets</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3864" target="_blank" rel="noopener noreferrer">pull-3864</a> - Fix Proposal deposits and add deposit tests to imp tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3859" target="_blank" rel="noopener noreferrer">pull-3859</a> - Rename ProposalsSnapshot to Proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3867" target="_blank" rel="noopener noreferrer">pull-3867</a> - <code>MaryValue</code> fixes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3869" target="_blank" rel="noopener noreferrer">pull-3869</a> - Indicate that tag 258 is optional for OSet. Fix rational CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3863" target="_blank" rel="noopener noreferrer">pull-3863</a> - Improve deposits refunds re-usability</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3861" target="_blank" rel="noopener noreferrer">pull-3861</a> - Fail PParamsUpdate deserialization for invalid costmodels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3875" target="_blank" rel="noopener noreferrer">pull-3875</a> - Fix cddl spec for CostModels in Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3876" target="_blank" rel="noopener noreferrer">pull-3876</a> - Change 4 PParam fields from EpochNo to EpochInterval</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3884" target="_blank" rel="noopener noreferrer">pull-3884</a> - Relax requirement on the Set tag 258 to be enforced in the next era</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3868" target="_blank" rel="noopener noreferrer">pull-3868</a> - Improvements to support property tests on Traces with simple Tx with DRep related Certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3792" target="_blank" rel="noopener noreferrer">pull-3792</a> - RATIFY and GOV constraint tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3885" target="_blank" rel="noopener noreferrer">pull-3885</a> - Added a test for genTxAndNewEpoch</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3886" target="_blank" rel="noopener noreferrer">pull-3886</a> - QuickCheck Imp integration</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3854" target="_blank" rel="noopener noreferrer">pull-3854</a> - Integration work for node 8.7.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3872" target="_blank" rel="noopener noreferrer">pull-3872</a> - Fixup ReadTheDocs build</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3871" target="_blank" rel="noopener noreferrer">pull-3871</a> - Bump plutus dep to 1.16</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3874" target="_blank" rel="noopener noreferrer">pull-3874</a> - Post release changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3880" target="_blank" rel="noopener noreferrer">pull-3880</a> - Remove generic-monoid dependency</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3887" target="_blank" rel="noopener noreferrer">pull-3887</a> - Add changelog for features that landed in cardano-node-8.7</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-20-cip1694">Initial CIP 1694 Security Analysis and Responses</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-20T00:00:00.000Z" itemprop="datePublished">November 20, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule &quot;The Cardano network must always be able to produce new blocks&quot; - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a &#x27;guardrails document&#x27; in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cip-1694">cip1694</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/security">security</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-08-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This update contains mostly improvements to quality of Conway era implementation and
+tooling that we use for testing Ledger. Major Conway bugs that were discovered and
+squashed are:</p><ul><li>PParamsUpdate proposals will now correctly use DRep thresholds for ratification</li><li>Treasury withdrawals are now properly enacted.</li><li>Corrected snapshotting and DRep Stake Distribution Pulser initialization</li><li>Delegation to non-existent Stake pool is no longer possible</li></ul><p>Other important quality of life improvements are addition of reusable interfaces for an
+ordered set <code>OSet</code> and ordered map <code>OMap</code>. Which allowed us to disable duplicate
+certificates and proposals in a transaction. As a precursor to <code>PlutusV3</code> integration, a
+serious reorganization of Plutus related functionality was performed.</p><p>Conway related additions that are noteworthy: Conway Ledger events, disallowing voting on
+expired proposals, addition of Anchor to Constitutional Committee resignation proposals.</p><p>Significant improvements have been made to a specialized &quot;Imp&quot; test library that allows us
+writing concise stateful unit tests for verifying the Ledger logic. Serious progress has
+been made on the conformance testing, where we can now interface with Haskell generated
+code from the Agda specification. Serialization testing has been extended to increase
+binary conformance coverage.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway">Conway<a class="hash-link" href="#conway" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3808" target="_blank" rel="noopener noreferrer">pull-3808</a> - Enhance <code>CommitteeMembersState</code> query to return quorum and NoConfidence</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3801" target="_blank" rel="noopener noreferrer">pull-3801</a> - Fix epoch rule and tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3803" target="_blank" rel="noopener noreferrer">pull-3803</a> - Fix delegation validation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3759" target="_blank" rel="noopener noreferrer">pull-3759</a> - Reshuffle things to the DRepPulser incorporates some snap shot things</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3779" target="_blank" rel="noopener noreferrer">pull-3779</a> - Prevent duplicate certs and proposals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3794" target="_blank" rel="noopener noreferrer">pull-3794</a> - Added anchor to resign certs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3797" target="_blank" rel="noopener noreferrer">pull-3797</a> - Cleanup JSON instances for Conway governance</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3848" target="_blank" rel="noopener noreferrer">pull-3848</a> - Plutus modules restructure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3840" target="_blank" rel="noopener noreferrer">pull-3840</a> - Fix anomalies in Deposits in the Conway Era</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3856" target="_blank" rel="noopener noreferrer">pull-3856</a> - Add governance related ledger events</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3825" target="_blank" rel="noopener noreferrer">pull-3825</a> - Prevent voting on expired GovActions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3831" target="_blank" rel="noopener noreferrer">pull-3831</a> - Treasury withdrawal fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3791" target="_blank" rel="noopener noreferrer">pull-3791</a> - Use a Data.OMap.Strict to replace ProposalsSnapshot</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3836" target="_blank" rel="noopener noreferrer">pull-3836</a> - PParamsUpdate enactment fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3846" target="_blank" rel="noopener noreferrer">pull-3846</a> - Revert argument order swap.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3782" target="_blank" rel="noopener noreferrer">pull-3782</a> - Move <code>ImpTest</code> to Shelley testlib</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3842" target="_blank" rel="noopener noreferrer">pull-3842</a> - Imp improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3844" target="_blank" rel="noopener noreferrer">pull-3844</a> - Add mappings to Agda types</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3853" target="_blank" rel="noopener noreferrer">pull-3853</a> - Fix strange assertion failure, which hides real Block too big problem.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3809" target="_blank" rel="noopener noreferrer">pull-3809</a> - CDDL roundtrip testing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3832" target="_blank" rel="noopener noreferrer">pull-3832</a> - Treasury withdrawals tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3839" target="_blank" rel="noopener noreferrer">pull-3839</a> - Added <code>cardano-ledger-conformance</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3841" target="_blank" rel="noopener noreferrer">pull-3841</a> - Add <code>sha256</code> to <code>cardano-ledger-executable-spec</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3843" target="_blank" rel="noopener noreferrer">pull-3843</a> - Add ...WithLogs versions of evalScripts and friends</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3795" target="_blank" rel="noopener noreferrer">pull-3795</a> - Bump plutus to 1.15</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3798" target="_blank" rel="noopener noreferrer">pull-3798</a> - Bump urllib3 from 1.26.17 to 1.26.18 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3799" target="_blank" rel="noopener noreferrer">pull-3799</a> - Changes needed for 8.6 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3807" target="_blank" rel="noopener noreferrer">pull-3807</a> - Add invalidBeforeL and invalidHereAfterL functions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3819" target="_blank" rel="noopener noreferrer">pull-3819</a> - Fixups needed for a release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3829" target="_blank" rel="noopener noreferrer">pull-3829</a> - Post release CHANGELOG version bumps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3830" target="_blank" rel="noopener noreferrer">pull-3830</a> - Bump aeson to 2.2</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3833" target="_blank" rel="noopener noreferrer">pull-3833</a> - Backport release cardano-ledger-conway-1.10.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3828" target="_blank" rel="noopener noreferrer">pull-3828</a> - Add changelog for node release 8.6</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team has been shifting focus from implementing Conway related features to
+testing. For this reason there is a very little amount features that are reported this
+time aorund. Notable Conway related changes are a specialized ledger query for getting
+Constitutional Committee state and prevention of submitting proposal procedures that have
+no valid path to enactment.</p><p>Testing related work was mainly on a constraint base system as well as on roundtrip
+serialization. As a result of this extra testing a bug in Conway Genesis serialization
+was eliminated.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3768" target="_blank" rel="noopener noreferrer">pull-3768</a> - Fail proposal on invalid prevGovActionId</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3781" target="_blank" rel="noopener noreferrer">pull-3781</a> - CommitteeState query</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-and-releasing">Integration and releasing<a class="hash-link" href="#integration-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3774" target="_blank" rel="noopener noreferrer">pull-3774</a> - Bump urllib3 from 1.26.10 to 1.26.17 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3770" target="_blank" rel="noopener noreferrer">pull-3770</a> - cabal.project: Bump index states</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3778" target="_blank" rel="noopener noreferrer">pull-3778</a> - Bump plutus to 1.14</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3769" target="_blank" rel="noopener noreferrer">pull-3769</a> - Add roundtrip testing by validating FlatTerm</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3783" target="_blank" rel="noopener noreferrer">pull-3783</a> - Update TranslationInstance.hs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3775" target="_blank" rel="noopener noreferrer">pull-3775</a> - Refactor and improve constraint based STS tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3793" target="_blank" rel="noopener noreferrer">pull-3793</a> - Fix sums with negative RHS.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/ledger/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Few important Conway related features were completed in this two week period:</p><ul><li>Constitutional Committee was the last missing Conway related entity that has now been
+fully implemented.</li><li>Treasury withdrawals governance actions have been fixed and now behave as expected.</li><li>Current treasury amount supplied in the transaction is now enforced by the rules.</li><li>DRep&#x27;s expiry is prevented by delaying the expiry for all DReps whenever there are no
+proposals to vote on.</li><li>Semantics of how CostModels are updated with Protocol Parameters have been changed to
+allow for individual Plutus language version updates, rather than requiring a complete
+replacement of all CostModels</li></ul><p>Besides the new features there were also important performance and testing improvements:</p><ul><li>In particular stake distribution computation and native script handling received some
+optimizations.</li><li>New testing DSL has been implemented that drastically simplifies writing unit tests for
+ledger rules.</li><li>Integration tests and benchmarks are now possible for Conway era because of the overhaul
+of functionality for initial funds and staking injection whenever node starts up in
+Conway, while bypassing all previous eras.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3729" target="_blank" rel="noopener noreferrer">pull-3729</a> - DRep expiry update after a contiguous set of epochs with no proposals to vote on</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3739" target="_blank" rel="noopener noreferrer">pull-3739</a> - Rename some PParams to be consistent with Agda specification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3743" target="_blank" rel="noopener noreferrer">pull-3743</a> - Move DRepDistr from VState to ConwayGovState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3746" target="_blank" rel="noopener noreferrer">pull-3746</a> - Implement <code>tcTranslationContextL</code> for Shelley</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3737" target="_blank" rel="noopener noreferrer">pull-3737</a> - Implement EraTransition</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3749" target="_blank" rel="noopener noreferrer">pull-3749</a> - Add predicate failure: current treasury value mismatch in LEDGER</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3748" target="_blank" rel="noopener noreferrer">pull-3748</a> - Apply enacted treasury withdrawals</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3745" target="_blank" rel="noopener noreferrer">pull-3745</a> - Constitutional Committee Ratification</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3763" target="_blank" rel="noopener noreferrer">pull-3763</a> - Plutus interface improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3771" target="_blank" rel="noopener noreferrer">pull-3771</a> - Changed how costmodel updates are applied</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3766" target="_blank" rel="noopener noreferrer">pull-3766</a> - Prevent updating protocol version with <code>PParamUpdate</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3765" target="_blank" rel="noopener noreferrer">pull-3765</a> - Improve native script handling</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3747" target="_blank" rel="noopener noreferrer">pull-3747</a> - Use (CompactForm Coin) in IncrementalStake, DRepDistr (and other places) instead of Coin</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3758" target="_blank" rel="noopener noreferrer">pull-3758</a> - Cardano-Perf regression: UMap.size regression fix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3754" target="_blank" rel="noopener noreferrer">pull-3754</a> - Use Alonzo-style TxOut encoder when possible</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="releasing">Releasing<a class="hash-link" href="#releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3742" target="_blank" rel="noopener noreferrer">pull-3742</a> - Update fourmolu, ghcid and hls. Update haskellNix and iohkNix flakes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3744" target="_blank" rel="noopener noreferrer">pull-3744</a> - Changelog 8.4</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3752" target="_blank" rel="noopener noreferrer">pull-3752</a> - Patch release of cardano ledger conway 1.8.1.0</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3753" target="_blank" rel="noopener noreferrer">pull-3753</a> - Minor cleanup and changelog entries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3760" target="_blank" rel="noopener noreferrer">pull-3760</a> - Fixup issues for release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3764" target="_blank" rel="noopener noreferrer">pull-3764</a> - Bump plutus deps to 1.13</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3734" target="_blank" rel="noopener noreferrer">pull-3734</a> - Removed <code>Shaped</code> instance for <code>Rep</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3735" target="_blank" rel="noopener noreferrer">pull-3735</a> - Simplify the implementations of <code>hasOrd</code> and <code>hasEq</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3728" target="_blank" rel="noopener noreferrer">pull-3728</a> - STS tests based on constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3714" target="_blank" rel="noopener noreferrer">pull-3714</a> - Implement the remaining upgradable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3733" target="_blank" rel="noopener noreferrer">pull-3733</a> - Add some unit tests for Conway features</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3762" target="_blank" rel="noopener noreferrer">pull-3762</a> - Update CDDL for praos headers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Ledger team&#x27;s focus is still mainly on the Conway era implementation.</p><p>We were able to add ability to specify initial Constitutional Comittee and the initial
+version of Constitution. Priority in which Governance Action are now enacted matches the
+specification. DRep&#x27;s deposits are now properly accounted for. Governance actions that are
+not allowed to be voted on by Stake Pool operators and Constitutional Committee members
+are prevented by transaction submission failure, rather than simply being ignored. There
+was a few important CDDL fixes as well as a lot of new round trip serialization
+tests. Constraint based testing framework has also received a lot of improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3681" target="_blank" rel="noopener noreferrer">pull-3681</a> - Conway Genesis additions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3690" target="_blank" rel="noopener noreferrer">pull-3690</a> - Preserve the order of ProposalProcedures</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3705" target="_blank" rel="noopener noreferrer">pull-3705</a> - Removed ProtVer from EnactState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3700" target="_blank" rel="noopener noreferrer">pull-3700</a> - Add conway-specific certs to deposit/refunds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3704" target="_blank" rel="noopener noreferrer">pull-3704</a> - Add comments on deprecating certs to Conway CDDL</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3698" target="_blank" rel="noopener noreferrer">pull-3698</a> - Reordering of governance actions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3712" target="_blank" rel="noopener noreferrer">pull-3712</a> - Disallow empty fields in ConwayTxBodyRaw</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3716" target="_blank" rel="noopener noreferrer">pull-3716</a> - Abstract threshold calculation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3725" target="_blank" rel="noopener noreferrer">pull-3725</a> - Fix mistaken use of dollar sign in cddl files</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3718" target="_blank" rel="noopener noreferrer">pull-3718</a> - Predicate failure for mismatched Voter GovAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3721" target="_blank" rel="noopener noreferrer">pull-3721</a> - Committee expiration, validation and modification</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3629" target="_blank" rel="noopener noreferrer">pull-3629</a> - Add rule-transition diagrams in dot syntax</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3680" target="_blank" rel="noopener noreferrer">pull-3680</a> - Bump Plutus deps to 1.11</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3708" target="_blank" rel="noopener noreferrer">pull-3708</a> - Post release changes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3730" target="_blank" rel="noopener noreferrer">pull-3730</a> - Implement <code>Show</code> instance for <code>Rep</code> using <code>IsTypeable</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3697" target="_blank" rel="noopener noreferrer">pull-3697</a> - Rewrite testEql using Typeable to make it impossible to forget cases</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3709" target="_blank" rel="noopener noreferrer">pull-3709</a> - Add many new features to the Constrained modues in cardano-ledger-test</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3726" target="_blank" rel="noopener noreferrer">pull-3726</a> - Conway and other eras serialization roundtrip tests</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3713" target="_blank" rel="noopener noreferrer">pull-3713</a> - Improve CI resiliency against GitHub issues</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Broadly speaking the Ledger team focused on a few main areas of Conway era:</p><ul><li>Creation of voting state snapshots in order to correctly delay ratification for one epoch</li><li>Validation of the Governance Actions sequencing and ordering</li><li>Proper expiry of DReps and Proposal Procedures</li><li>Expanding Conway Genesis functionality</li><li>Utilization of some of the new Protocol Parameters in ledger validation rules</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-era">Conway era<a class="hash-link" href="#conway-era" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3659" target="_blank" rel="noopener noreferrer">pull-3659</a> - Validate Network for ProposalProcedure and TreasuryWithdrawal</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3637" target="_blank" rel="noopener noreferrer">pull-3637</a> - Avoid using sequence of tuples, by adding GovActionId to GovActionState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3651" target="_blank" rel="noopener noreferrer">pull-3651</a> - Inactive DReps</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3664" target="_blank" rel="noopener noreferrer">pull-3664</a> - Track proposal expiry</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3668" target="_blank" rel="noopener noreferrer">pull-3668</a> - Add min committee size predicate to NewCommittee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3669" target="_blank" rel="noopener noreferrer">pull-3669</a> - Add Proposal deposit check against PParam</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3676" target="_blank" rel="noopener noreferrer">pull-3676</a> - Fix inactive PoolStake not counting as Drep Stake</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3635" target="_blank" rel="noopener noreferrer">pull-3635</a> - Make snapshots of GovActionsState</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3670" target="_blank" rel="noopener noreferrer">pull-3670</a> - Validate previously enacted govAction</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3694" target="_blank" rel="noopener noreferrer">pull-3694</a> - Improve error reporting on the positive coin decoder</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3674" target="_blank" rel="noopener noreferrer">pull-3674</a> - Added RATIFY thresholds</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3684" target="_blank" rel="noopener noreferrer">pull-3684</a> - Add proposal delaying, remove predicate failure from ENACT</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3688" target="_blank" rel="noopener noreferrer">pull-3688</a> - DRep Refunds and update evalTransactionBalance</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3677" target="_blank" rel="noopener noreferrer">pull-3677</a> - Minor patch that fixes the DRep distribution computation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3686" target="_blank" rel="noopener noreferrer">pull-3686</a> - Post patch release fixup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3695" target="_blank" rel="noopener noreferrer">pull-3695</a> - Changelog for cardano-node-8.3 release</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3683" target="_blank" rel="noopener noreferrer">pull-3683</a> - Add two new bench mark programs</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3662" target="_blank" rel="noopener noreferrer">pull-3662</a> - Equality on raw types</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made great progress in advancing Conway era forward. In particular, voting
+for DRep and Stake Pool Operators is now at the state that can be used by downstream
+components. Addition of new ledger state queries makes it possible to verify changes to
+the governance state, such as placement of votes, submission of governance proposals,
+inspecting DRep stake distribution and more. Addition of treasury withdrawals concludes the
+ability to enact all of the governance actions, except for the hard fork initiation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3577" target="_blank" rel="noopener noreferrer">pull-3577</a> - Move <code>PParams</code> to <code>GovState</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3609" target="_blank" rel="noopener noreferrer">pull-3609</a> - Adjust thresholds for sanchonet</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3604" target="_blank" rel="noopener noreferrer">pull-3604</a> - README: update CIP-1694 link</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3616" target="_blank" rel="noopener noreferrer">pull-3616</a> - Switch <code>TreasuryWithdrawals</code> to use <code>RewardAcnt</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3599" target="_blank" rel="noopener noreferrer">pull-3599</a> - Add governance action well-formedness check</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3607" target="_blank" rel="noopener noreferrer">pull-3607</a> - Rename governance to gov</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3601" target="_blank" rel="noopener noreferrer">pull-3601</a> - Added <code>DRep</code> anchors</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3615" target="_blank" rel="noopener noreferrer">pull-3615</a> - Add optional previous <code>GovActionId</code> in some <code>ProposalProcedures</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3596" target="_blank" rel="noopener noreferrer">pull-3596</a> - Upgradeable families</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3625" target="_blank" rel="noopener noreferrer">pull-3625</a> - Change constitution to use <code>Anchor</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3592" target="_blank" rel="noopener noreferrer">pull-3592</a> - Added pulsing incremental computation of the DRep distribution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a> - Treasury donations</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3633" target="_blank" rel="noopener noreferrer">pull-3633</a> - Prevent state changes on phase2 failure</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3634" target="_blank" rel="noopener noreferrer">pull-3634</a> - Disable serialization of protocolVersion param update</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3630" target="_blank" rel="noopener noreferrer">pull-3630</a> - Implemented DRep refreshing</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3640" target="_blank" rel="noopener noreferrer">pull-3640</a> - Remove crypto parameterization from <code>AnchorData</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3636" target="_blank" rel="noopener noreferrer">pull-3636</a> - Implement DRep ratification with an &quot;always passing&quot;; threshold</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3648" target="_blank" rel="noopener noreferrer">pull-3648</a> - Governance queries</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3650" target="_blank" rel="noopener noreferrer">pull-3650</a> - Change environment for <code>ShelleyPOOLREAP</code> rule</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3658" target="_blank" rel="noopener noreferrer">pull-3658</a> - Set <code>DRep</code> ratify threshold to 51%</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3628" target="_blank" rel="noopener noreferrer">pull-3628</a> - <code>DELEG</code>, <code>POOL</code>, <code>GOVCERT</code> conformance with Spec v0.8</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3619" target="_blank" rel="noopener noreferrer">pull-3619</a> - Disabled a broken test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3660" target="_blank" rel="noopener noreferrer">pull-3660</a> - Fix bounds and versions</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3661" target="_blank" rel="noopener noreferrer">pull-3661</a> - Adjust versions, bounds and CHANGELOGs to account for the latest release</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team was working almost exclusively on the Conway era implementation. In
+particular, the main focus was directed towards solidifying transaction related types and
+their binary representation. We also directed some effort into unblocking Plutus team with
+respect to PlutusV3 integration.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a> - Allow Constitutional Committee Hot Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3581" target="_blank" rel="noopener noreferrer">pull-3581</a> - Make Constitutional Committee Cold Key to be ScriptHash</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3571" target="_blank" rel="noopener noreferrer">pull-3571</a> - Implement a portion of the TICKF rule.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a> - Add Script to Constitution</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3576" target="_blank" rel="noopener noreferrer">pull-3576</a> - Add optional Anchor to ConwayRegDRep certificate</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a> - Implement refund logic for Proposal deposits</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3579" target="_blank" rel="noopener noreferrer">pull-3579</a> - Change voting procedure in the transaction to a nested Map</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3585" target="_blank" rel="noopener noreferrer">pull-3585</a> - Rename <code>CommitteeCert</code> into a <code>GovCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3587" target="_blank" rel="noopener noreferrer">pull-3587</a> - Remove <code>DelegStakeTxCert</code> from the <code>COMPLETE</code> pragma for <code>TxCert</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3586" target="_blank" rel="noopener noreferrer">pull-3586</a> - Add <code>CurrentTreasuryValue</code> to <code>TxBody</code></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3588" target="_blank" rel="noopener noreferrer">pull-3588</a> - Rename key roles</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a> - Update <code>NewCommittee</code> action to use <code>RewardAcnt</code> and add more info</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3595" target="_blank" rel="noopener noreferrer">pull-3595</a> - Add <code>ConwayUpdateDRep</code> constructor to ConwayTxCertGov type</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3600" target="_blank" rel="noopener noreferrer">pull-3600</a> - Filter out zero TxOuts on Byron/Shelley boundary instead of Babbage/Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3597" target="_blank" rel="noopener noreferrer">pull-3597</a> - Update <code>ProposalProcedure</code> return address to be a <code>RewardAcnt</code></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing">Testing<a class="hash-link" href="#testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a> - New features for generation subject to constraints</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3519" target="_blank" rel="noopener noreferrer">pull-3519</a> - Basic Conway features test</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugfixes">Bugfixes<a class="hash-link" href="#bugfixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3566" target="_blank" rel="noopener noreferrer">pull-3566</a> - Mint field translation bugfix.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-integration">Plutus integration<a class="hash-link" href="#plutus-integration" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3538" target="_blank" rel="noopener noreferrer">issue-3538</a> - A fairly complete specification was created for the PlutusV3 context</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3593" target="_blank" rel="noopener noreferrer">pull-3593</a> - Conway TxInfo for PlutusV3 is now compatible with all pre-Conway functionality</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improvements-and-releasing">Improvements and releasing<a class="hash-link" href="#improvements-and-releasing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3574" target="_blank" rel="noopener noreferrer">pull-3574</a> - Improve clarity and performance of collateral Non-ADA validation:</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3573" target="_blank" rel="noopener noreferrer">pull-3573</a> - Update top-level <code>CHANGELOG.md</code> with cardano-node relevant changes</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3555" target="_blank" rel="noopener noreferrer">pull-3555</a> - Bump pygments from 2.12.0 to 2.15.0 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3575" target="_blank" rel="noopener noreferrer">pull-3575</a> - Bump certifi from 2022.12.7 to 2023.7.22 in /doc</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3567" target="_blank" rel="noopener noreferrer">pull-3567</a> - Backport mint field translation bugfix</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3568" target="_blank" rel="noopener noreferrer">pull-3568</a> - Fixed typo in byron ledger spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3572" target="_blank" rel="noopener noreferrer">pull-3572</a> - Release/backport tickf bugfix</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/ledger"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/ledger/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/lehins.png" alt="Alexey Kuleshevich"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Alexey Kuleshevich</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Software Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Our focus was on planning and implementing Conway features that we would like to see deployed and running on Sanchonet.
+All members of the ledger team participated in the CIP-1694 workshop and had an in-person meeting, where we discussed plans forward for the Conway era.
+We also investigated some transaction validation issues that occurred on preview with the latest node (for 8.2 release).
+Additionally, we did some preparatory work that will help us define the types we need for Plutus V3 and integrate with the new version when it will become available.
+We also made progress on the constraint-based generators, which can now generate valid transactions and ledger states. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-we-achieved">What we achieved<a class="hash-link" href="#what-we-achieved" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3521" target="_blank" rel="noopener noreferrer">pull-3521</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3554" target="_blank" rel="noopener noreferrer">pull-3554</a>] Improved Governance model (GovernanceProcedures, ProposalProcedure)</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3520" target="_blank" rel="noopener noreferrer">pull-3520</a>] Improved Governance-related naming (Renamed Tally to Gov and VDel to GovCert ) </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3531" target="_blank" rel="noopener noreferrer">pull-3531</a>] Refactored and simplified code interacting with Plutus</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3558" target="_blank" rel="noopener noreferrer">pull-3558</a>] Fixed a bug that was breaking validation on preview, related to refernce inputs witnesses. We backported and released the fix. </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3550" target="_blank" rel="noopener noreferrer">pull-3550</a>] For Conway to run on Sanchonet, we updated the era Translation to remove zero-ADA outputs. This was necessary because such outputs exist on mainnet, but in Conway they are not allowed.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3551" target="_blank" rel="noopener noreferrer">pull-3551</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3546" target="_blank" rel="noopener noreferrer">pull-3546</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3472" target="_blank" rel="noopener noreferrer">pull-3472</a>] Updated tools and added some small improvements </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3146" target="_blank" rel="noopener noreferrer">issue-3146</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3498" target="_blank" rel="noopener noreferrer">pull-3498</a>] Introduced Conway protocol parameters </li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2948" target="_blank" rel="noopener noreferrer">issue-2948</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3499" target="_blank" rel="noopener noreferrer">pull-3499</a>] Implemented ConwayGenesis with the new protocol parameters</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-is-currently-in-progress">What is currently in progress<a class="hash-link" href="#what-is-currently-in-progress" title="Direct link to heading">​</a></h2><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3494" target="_blank" rel="noopener noreferrer">issue-3494</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3495" target="_blank" rel="noopener noreferrer">pull-3495</a>] Implement returning of proposal deposits</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3436" target="_blank" rel="noopener noreferrer">issue-3436</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3523" target="_blank" rel="noopener noreferrer">pull-3523</a>] Implement transferring lovelace from UTxO to treasury</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3509" target="_blank" rel="noopener noreferrer">issue-3509</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3552" target="_blank" rel="noopener noreferrer">pull-3552</a>] Add script-support for the committee hot key</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3532" target="_blank" rel="noopener noreferrer">issue-3532</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3556" target="_blank" rel="noopener noreferrer">pull-3556</a>] Add script-support for the constitution</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3543" target="_blank" rel="noopener noreferrer">issue-3543</a>] [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3557" target="_blank" rel="noopener noreferrer">pull-3557</a>] Improve the &#x27;new committee&#x27; governance action by specifying the members to be replaced, expiration epoch of new members and adding script-support</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team made progress on the conway ledger era. In particular, the design and implementation
+of the new certificates is near complete, we refactored some of our data structures
+to be able to support DReps, we cleaned up the serialization format, and renamed things to make
+clearer the differences with Shelley.</p><p>The team also completed integration work for the next node release, namely 8.1.0.
+And, as always, we continue to address technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-progress">Conway progress<a class="hash-link" href="#conway-progress" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3408" target="_blank" rel="noopener noreferrer">pull-3408</a> - Improve conway delegation certificates</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3428" target="_blank" rel="noopener noreferrer">pull-3428</a> - Get rid of Constitutional in favor of Genesis and Committee</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3426" target="_blank" rel="noopener noreferrer">pull-3426</a> - Add DRep to internal data struture (UMap)</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3425" target="_blank" rel="noopener noreferrer">pull-3425</a> - Improve witness logic needed for conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3423" target="_blank" rel="noopener noreferrer">pull-3423</a> - Rename ShelleyDelegCerts constructors to distinguish them from Conway</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3421" target="_blank" rel="noopener noreferrer">pull-3421</a> - Rename DCert -&gt; TxCert</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3454" target="_blank" rel="noopener noreferrer">pull-3454</a> - conway CDDL minor fixes</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="improve-testing">Improve testing<a class="hash-link" href="#improve-testing" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3403" target="_blank" rel="noopener noreferrer">pull-3403</a> - Add Plutus script context golden tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3410" target="_blank" rel="noopener noreferrer">pull-3410</a> - Update chaps index</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3416" target="_blank" rel="noopener noreferrer">pull-3416</a> - Bump cardano-ledger-alonzo-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3414" target="_blank" rel="noopener noreferrer">pull-3414</a> - Bump cardano-ledger-shelley-test minor version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3420" target="_blank" rel="noopener noreferrer">pull-3420</a> - Bump cardano-ledger-shelley-ma-test version</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3441" target="_blank" rel="noopener noreferrer">pull-3441</a> - Release cardano-ledger-<!-- -->[alonzo|babbage]<!-- -->-1.2.1</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3409" target="_blank" rel="noopener noreferrer">pull-3409</a> -  Unit test - no such thing as a reference datum</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3407" target="_blank" rel="noopener noreferrer">pull-3407</a> -  Fixup release process documentation</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3404" target="_blank" rel="noopener noreferrer">pull-3404</a> -  Create TotalDeposits events during all eras</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3402" target="_blank" rel="noopener noreferrer">pull-3402</a> -  Fix broken references in the Shelley spec</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3424" target="_blank" rel="noopener noreferrer">pull-3424</a> -  Remove no longer used cardano-ledger-shelley-ma package</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3432" target="_blank" rel="noopener noreferrer">pull-3432</a> -  Add an example on how to bump up versions in the changelog </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3440" target="_blank" rel="noopener noreferrer">pull-3440</a> -  Revert back to the group serialization for ProtVer for PParams </li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-05-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-05T00:00:00.000Z" itemprop="datePublished">May 5, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team focused mainly on the conway ledger era and node integration.
+For conway, we completed a large structural change that now allows
+for delegation certificates to be parameterized by era, and introducing
+new certificates for the first time since Shelley.
+We also continue to build out our contraint based generators that we will
+use to property test the conway era.
+In particular, we can now generate an entire ledger state and a
+transaction which is balanced with respect to the ledger state.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="conway-certificates">Conway certificates<a class="hash-link" href="#conway-certificates" title="Direct link to heading">​</a></h2><p>Certificiates are now abstracted as a type family in the ledger codebase.
+Moreover, there are new certificates in the Conway era to support CIP-1694,
+and MIR certificates have been removed.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3387" target="_blank" rel="noopener noreferrer">pull-3387</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h2><p>Our plan for property testing in the conway era is to no longer use the trace generators,
+but instead generate ledger states and transactions based on constraints.
+We hit a milestone this week, namely the ability to generate a balanced transaction in the context
+of a ledger state, all based on our ever growing constaint language.</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3374" target="_blank" rel="noopener noreferrer">pull-3374</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3386" target="_blank" rel="noopener noreferrer">pull-3386</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3393" target="_blank" rel="noopener noreferrer">pull-3393</a> - Performance improvements</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3395" target="_blank" rel="noopener noreferrer">pull-3395</a> - Conway instances</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3398" target="_blank" rel="noopener noreferrer">pull-3398</a> - Fix mint translation in the script context</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h2><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3389" target="_blank" rel="noopener noreferrer">pull-3389</a> - Reduce github pages size</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3390" target="_blank" rel="noopener noreferrer">pull-3390</a> - Reinstate the tickf optimizations</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-21-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-21T00:00:00.000Z" itemprop="datePublished">April 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued to make progress on CIP-1694 and the conway ledger era.
+In particular, the conway era now supports Plutus V3.
+Finally, we made small improvements to the ledger API and now host
+our Haskell code documentation (haddocks) on github pages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-era">Conway ledger era<a class="hash-link" href="#conway-ledger-era" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3365" target="_blank" rel="noopener noreferrer">pull-3365</a>] - Support for Plutus V3.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3368" target="_blank" rel="noopener noreferrer">pull-3368</a>] - Conway genesis fix.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3369" target="_blank" rel="noopener noreferrer">pull-3369</a>] - Added some governance ledger state.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3372" target="_blank" rel="noopener noreferrer">pull-3372</a>] - Work on the conway delegation certificates.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3384" target="_blank" rel="noopener noreferrer">pull-3384</a>] - Rename.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="haddocks-hosted-on-github-pages">Haddocks hosted on github pages<a class="hash-link" href="#haddocks-hosted-on-github-pages" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3385" target="_blank" rel="noopener noreferrer">pull-3385</a>] </li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-improvements-to-the-api">Small improvements to the API<a class="hash-link" href="#small-improvements-to-the-api" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3366" target="_blank" rel="noopener noreferrer">pull-3366</a>]</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical Debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3367" target="_blank" rel="noopener noreferrer">pull-3367</a>] Fix cost model json instances.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3371" target="_blank" rel="noopener noreferrer">pull-3371</a>] UMap cleanup.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3373" target="_blank" rel="noopener noreferrer">pull-3373</a>] Upgrade to ghc 9.2.7 and cabal 3.10.1.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3375" target="_blank" rel="noopener noreferrer">pull-3375</a>] Sadly, we had to revert the <code>TICKF</code> optimizations. There was a regression we do not yet understand.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3377" target="_blank" rel="noopener noreferrer">pull-3377</a>] Fix cabal warnings.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3383" target="_blank" rel="noopener noreferrer">pull-3383</a>] Fix multi-asset test.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-17-ledger">Incident Report</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-17T00:00:00.000Z" itemprop="datePublished">April 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="incident-reporting-cardano-block-production-temporary-outage">Incident reporting: Cardano block production temporary outage<a class="hash-link" href="#incident-reporting-cardano-block-production-temporary-outage" title="Direct link to heading">​</a></h2><p>On Sunday, January 22, 2023, an incident occurred resulting in block production pausing for a brief period of time (approximately two minutes, similar to the usual pause at an epoch boundary). Around 50% of block-producing nodes and relays restarted during this period. Having restarted, nodes continued to produce blocks without failure. While the network continued to operate, the issue did have the potential to affect network integrity, so was flagged as a ‘critical’ incident, thus warranting immediate response and investigation by IOG engineers.
+The investigation (with SPO &amp; Cardano Foundation collaboration) quickly revealed the cause of the issue – a complex bug in data structure handling code related to the precise order of insertion/deletion of multi-asset tokens into the internal ledger record. Input Output Global (IOG) engineers, along with SPOs and DApp developers, collectively identified how to reproduce the issue as a unit test that could be included in the standard Cardano node test suite.
+Following successful testing, this led to a bug fix being implemented, tested, benchmarked, and deployed as a hotfix in the node v.1.35.5 release on Friday, January 27, 2023. Care was taken not to highlight the exact cause of the bug during this process so that it could not be exploited prior to SPOs deploying this new node version.
+With the fix deployed, the Cardano SPO and developer community have not seen any further instances of this issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="further-details">Further Details<a class="hash-link" href="#further-details" title="Direct link to heading">​</a></h3><p>You can read more details on the incident and how it was managed from SundaeSwap’s Pi Lanningham <a href="https://www.314pool.com/post/cardano-post-mortem-1" target="_blank" rel="noopener noreferrer">here</a>. Thanks again to all the community for its support in identifying and fixing this bug.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/ledger/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/ledger/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-31-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-31T00:00:00.000Z" itemprop="datePublished">March 31, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We are still heavily involved in work related to preparing the next release.
+The other main thing we have worked on is experimentation about how we will
+handle the DRep stake distribution for CIP-1694 in the conway ledger era.
+Lastly, we merged a fix for
+<a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>
+into our main branch (there will be a post-mortem shortly).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="support-for-the-next-release">Support for the next release<a class="hash-link" href="#support-for-the-next-release" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3363" target="_blank" rel="noopener noreferrer">pull-3363</a> - Fix problems relating to Arbitrary instances used by consensus.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3361" target="_blank" rel="noopener noreferrer">pull-3361</a> - Remove the alonze genesis from the conway genesis.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3360" target="_blank" rel="noopener noreferrer">pull-3360</a> - Translate bad pointer addresses to valid ones in conway.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3357" target="_blank" rel="noopener noreferrer">pull-3357</a> - Fix a bug relating to zero valued ADA in the script context.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3356" target="_blank" rel="noopener noreferrer">pull-3356</a> - Added needed instances (Arbitrary and Serialization) for conway integration.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3345" target="_blank" rel="noopener noreferrer">pull-3345</a> - Added helper functions for the CLI.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3342" target="_blank" rel="noopener noreferrer">pull-3342</a> - Fix a bug with a CLI helper function (having to do with deposit tracking).</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="experiments-for-drep-stake-distribution">Experiments for DRep stake distribution<a class="hash-link" href="#experiments-for-drep-stake-distribution" title="Direct link to heading">​</a></h3><p>Adding another stake distribution to the ledger state presents some new challenges.
+We would like to be able to use the current stake distribution at the epoch boundary
+for DRep voting so that people can always vote themselves in time for any proposal.
+To this end, we have a prototype of an incremental computation based on the incremental
+lambda calculus, together with tests and benchmarks (which are very promising).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3344" target="_blank" rel="noopener noreferrer">pull-3344</a>.</p><p>Additionally, more of the ledger state is going to need to be rearranged to accomodate
+the new incremental computations.
+We have two draft PRs up for possibles solution.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3353" target="_blank" rel="noopener noreferrer">pull-3353</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3364" target="_blank" rel="noopener noreferrer">pull-3364</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-and-bug-fixes">Technical debt and bug fixes<a class="hash-link" href="#technical-debt-and-bug-fixes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3343" target="_blank" rel="noopener noreferrer">pull-3343</a> - A fix <a href="https://github.com/input-output-hk/cardano-node/issues/4826" target="_blank" rel="noopener noreferrer">node-4826</a>.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3333" target="_blank" rel="noopener noreferrer">pull-3333</a> - Moving more code out of the shelley packages. </li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3347" target="_blank" rel="noopener noreferrer">pull-3347</a> - Bug fix for the multi-asset generators.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a> - Removal of code duplication.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="documentation-changes">Documentation changes<a class="hash-link" href="#documentation-changes" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3354" target="_blank" rel="noopener noreferrer">pull-3354</a> - Rename &quot;optional datums&quot; with &quot;supplemental datums&quot; in the alonzo spec.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3352" target="_blank" rel="noopener noreferrer">pull-3352</a> - Add a section to the Shelly errata about the individual deposit tracking.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3351" target="_blank" rel="noopener noreferrer">pull-3351</a> - Further clarify the details regarding the script integrity hash.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3350" target="_blank" rel="noopener noreferrer">pull-3350</a> - Some cleanup of the Babbage spec.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-17-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-17T00:00:00.000Z" itemprop="datePublished">March 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We made further progress on the conway ledger era.
+In particular, we expanded the ledger API significantly, including lots of governance features.
+We also made progress on the specification and corresponding work in the Haskell implementation.</p><p>We also continued to integrate the latest ledger packages into cardano node and addressed
+technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="expanded-ledger-api">Expanded ledger API<a class="hash-link" href="#expanded-ledger-api" title="Direct link to heading">​</a></h3><p>The ledger API was significantly expanded to include:</p><ul><li>a lot of protocol parameter support</li><li>versioning support (type level ledger eras and protocol versions)</li><li>auxiliary data support</li><li>many new lenses</li><li>support for witnesses</li><li>support for conway governance</li></ul><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3328" target="_blank" rel="noopener noreferrer">pull-3328</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-ledger-rules">Conway ledger rules<a class="hash-link" href="#conway-ledger-rules" title="Direct link to heading">​</a></h3><p>We have made progress on the formal ledger specification for the Conway era.
+Moreover, the corresponding Haskell updates were also completed:</p><ul><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3339" target="_blank" rel="noopener noreferrer">pull-3339</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3326" target="_blank" rel="noopener noreferrer">pull-3326</a></li><li>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3330" target="_blank" rel="noopener noreferrer">pull-3330</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="incremental-spodrep-stake-distribution-computation">Incremental SPO/DRep stake distribution computation<a class="hash-link" href="#incremental-spodrep-stake-distribution-computation" title="Direct link to heading">​</a></h3><p>We have a working (and correct) proof of concept for how to use the incremental lambda calculus
+to maintain several of the stake distributions incrementally.
+For the per-SPO distribution, this is a performance improvement.
+For the (conway) per-DRep distribution, this is will allow those who have delegated their votes
+to a DRep to have time to react to any votes that they disapprove of.
+(Sorry, no code to share just yet, more to come.)</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>Improved CBOR testing facilities <a href="https://github.com/input-output-hk/cardano-ledger/pull/3332" target="_blank" rel="noopener noreferrer">pull-3332</a></li><li>GitHub actions improvement <a href="https://github.com/input-output-hk/cardano-ledger/pull/3320" target="_blank" rel="noopener noreferrer">pull-3320</a></li><li>Move ToJSON orphans from cardano-node <a href="https://github.com/input-output-hk/cardano-ledger/pull/3338" target="_blank" rel="noopener noreferrer">pull-3323</a></li><li>Minor OCert improvements <a href="https://github.com/input-output-hk/cardano-ledger/pull/3327" target="_blank" rel="noopener noreferrer">pull-3327</a></li><li>Remove duplication <a href="https://github.com/input-output-hk/cardano-ledger/pull/3341" target="_blank" rel="noopener noreferrer">pull-3341</a></li><li>Enforce unique elements in CBOR sets <a href="https://github.com/input-output-hk/cardano-ledger/pull/3331" target="_blank" rel="noopener noreferrer">pull-3331</a> </li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-03-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-03T00:00:00.000Z" itemprop="datePublished">March 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have focused the last two weeks on CIP-1694, integration of the last several months of ledger
+work into consensus and node, and testing infrastrutcture that we will use in the conway ledger era.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="conway-rules">Conway rules<a class="hash-link" href="#conway-rules" title="Direct link to heading">​</a></h3><p>We made a major update to the conway era so that the implementation is now in sync with the spec
+with respect to the ratification and enactment logic.</p><p>See the notes in <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a> for more details.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>This week we hit a major milestone in our efforts to build out better property based testing
+support for the main ledger properties.
+The new constraint based generators can now generate full ledger states with what is probably
+very close to the real constraints (if anything, it is under constrained).
+Next we will work on generating a transaction in the context of a ledger state, which would allow
+us to actually start using these generators for real tests.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="preparing-a-release-now-with-proper-versioning">Preparing a release, now with proper versioning<a class="hash-link" href="#preparing-a-release-now-with-proper-versioning" title="Direct link to heading">​</a></h3><p>After quite some time, we are ready to release a version of ledger that will work with a new
+version of consensus, using CHaPs.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3308" target="_blank" rel="noopener noreferrer">pull-3308</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li>We cleaned up the redeemer serialization code (to prevent future mistakes). See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>.</li><li>We added a note to the Alonzo spec, specifying that the transaction inputs are
+lexicographically ordered in the Plutus script context. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3306" target="_blank" rel="noopener noreferrer">pull-3306</a>.</li><li>We fixed a problem with the address deserialiazation
+(we mistakenly fixed a bug in the Babbage era which cannot be fixed until Conway).
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3307" target="_blank" rel="noopener noreferrer">pull-3307</a>.</li><li>We fixed a problem with our nix build. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3311" target="_blank" rel="noopener noreferrer">pull-3311</a>.</li><li>We fixed a problem with our <code>NoThunks</code> tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3310" target="_blank" rel="noopener noreferrer">pull-3310</a>.</li><li>We improved our nightly tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3316" target="_blank" rel="noopener noreferrer">pull-3316</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>This past two weeks saw many months worth of ledger changes integrated with the <code>cardano-base</code>
+and <code>ouroboros-network</code> repositories.
+The vast majority of the effort involved all the changes to the ledger serialization libraries
+(and the interplay with <code>cardano-base</code>) which now support proper versioning.
+Supporting the conway ledger era, and in particular allowing the ledger state to transition
+to a whole new system of governance, also played a noticeable part in the integration.</p><p>Besides the integration work, the team continues to address technical debt, improve the
+documentation, make our testing infrastructure better (such as experimenting with better
+nightly tests), and formally specifying more parts of CIP-1694.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="integration-work">Integration work<a class="hash-link" href="#integration-work" title="Direct link to heading">​</a></h3><p>Below is all the integration work completed, which will enable a release to node from
+the current ledger master. Many thanks to
+<a href="https://github.com/lehins" target="_blank" rel="noopener noreferrer">Alexey</a> for this colossal undertaking!</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3303" target="_blank" rel="noopener noreferrer">pull-3303</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3302" target="_blank" rel="noopener noreferrer">pull-3302</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3300" target="_blank" rel="noopener noreferrer">pull-3300</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3299" target="_blank" rel="noopener noreferrer">pull-3299</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3298" target="_blank" rel="noopener noreferrer">pull-3298</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3297" target="_blank" rel="noopener noreferrer">pull-3297</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3292" target="_blank" rel="noopener noreferrer">pull-3292</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3289" target="_blank" rel="noopener noreferrer">pull-3289</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3288" target="_blank" rel="noopener noreferrer">pull-3288</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3279" target="_blank" rel="noopener noreferrer">pull-3279</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3282" target="_blank" rel="noopener noreferrer">pull-3282</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4349" target="_blank" rel="noopener noreferrer">pull-4349</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>Starting in major protocol version 9, zero-valued multi-assets will no longer be permitted
+in the CBOR specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3241" target="_blank" rel="noopener noreferrer">pull-3241</a>.</p><p>We now have our <code>.cabal</code> files being checked for a consistent formatting given by
+<code>cabal format</code> in our CI. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3286" target="_blank" rel="noopener noreferrer">pull-3286</a>.</p><p>We are still experimenting with better nightly tests for our long running
+property based tests. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a> and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3296" target="_blank" rel="noopener noreferrer">pull-3296</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="small-documentation-improvements">Small documentation improvements<a class="hash-link" href="#small-documentation-improvements" title="Direct link to heading">​</a></h3><p>The hand proofs of the preservation ADA property have been added back to the
+Shelley ledger specification. See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3295" target="_blank" rel="noopener noreferrer">pull-3295</a>.</p><p>We have clarified how the script integrity hash is computed in the CDDL description.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3290" target="_blank" rel="noopener noreferrer">pull-3290</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="specifying-cip-1694">Specifying CIP-1694<a class="hash-link" href="#specifying-cip-1694" title="Direct link to heading">​</a></h3><p>Our new formal specifications backed by Agda have seen a lot of progress!
+Upgrading to Agda 2.6.3 fixed our main build infrastructure problems,
+and we no longer have to rely on our custom fork. See <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/50" target="_blank" rel="noopener noreferrer">pull-50</a>.</p><p>Our progress on formally specifying CIP-1694 can be followed here:</p><ul><li>in Agda: <a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/40" target="_blank" rel="noopener noreferrer">pull-40</a></li><li>the corresponding Haskell: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3291" target="_blank" rel="noopener noreferrer">pull-3291</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-testing">Constraint based testing<a class="hash-link" href="#constraint-based-testing" title="Direct link to heading">​</a></h3><p>We are still actively working on our new constraint based property testing framework.
+We have nearly all of the constraints for an entire ledger state
+hooked into generators, and tests that the generators do indeed obey the constraints.
+The variable count in the constraints is over 100!
+There is still much work to do on shrinking, making the generators faster,
+and writing actual property tests for the ledger, but the approach still seems viable and
+we are hopeful that it could replace our trace generators.
+The WIP can be followed here: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-02-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-02T00:00:00.000Z" itemprop="datePublished">February 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Much of the work the past two weeks involved integration efforts,
+cleaning up and debugging some serialization issues,
+adding tests, and work on large projects that are still ongoing.
+We also released a CIP this week that aims to make the ledger
+a registered CIP category.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-evolution-cip">Ledger evolution CIP<a class="hash-link" href="#ledger-evolution-cip" title="Direct link to heading">​</a></h3><p>We published a
+<a href="https://github.com/cardano-foundation/CIPs/pull/456" target="_blank" rel="noopener noreferrer">CIP</a>
+that will make the Cardano ledger a registered category of the CIP process.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="serialization-issues">Serialization issues<a class="hash-link" href="#serialization-issues" title="Direct link to heading">​</a></h3><p>We had previously thought that we had found a serialization problem with the redeemers,
+but it turned out to just be particularly confusing code.
+We have now clarified the issue for the future.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3263" target="_blank" rel="noopener noreferrer">pull-3263</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3269" target="_blank" rel="noopener noreferrer">pull-3269</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3268" target="_blank" rel="noopener noreferrer">pull-3268</a>.</p><p>Starting in protocol version 9, we will no longer accept duplicate keys in CBOR maps.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3277" target="_blank" rel="noopener noreferrer">pull-3277</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tests">New tests<a class="hash-link" href="#new-tests" title="Direct link to heading">​</a></h3><p>We added a new property test suite for some of our custom containers.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3270" target="_blank" rel="noopener noreferrer">pull-3270</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-a-better-cost-model-serialization-situation">Progress on a better cost model serialization situation.<a class="hash-link" href="#progress-on-a-better-cost-model-serialization-situation" title="Direct link to heading">​</a></h3><p>We are still working our way through <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+Towards this end, we are now properly gating the new flexible encoders
+until version 9.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3274" target="_blank" rel="noopener noreferrer">pull-3274</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nightly-tests">Nightly tests<a class="hash-link" href="#nightly-tests" title="Direct link to heading">​</a></h3><p>We are still experimenting with moving more CI actions to GitHub actions.</p><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3276" target="_blank" rel="noopener noreferrer">pull-3276</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>We continue to add to our proof of concept for constraint based generators.
+See the previous ledger update for more information about this project.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/ledger/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/ledger/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-19-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-19T00:00:00.000Z" itemprop="datePublished">January 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team completed some preliminary ground work in preparation for CIP-1694
+(restructuring the ledger state),
+fixed the PDF hosting problem (mostly the formal specs),
+built out more of the new user-friendly ledger API,
+finished a proof of concept for constraint-based generators for property tests
+(with the hopes of being able to replace our trace generators one day),
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="restructuring-the-ledger-state">Restructuring the ledger state<a class="hash-link" href="#restructuring-the-ledger-state" title="Direct link to heading">​</a></h3><p>The existing governance structures will be replace in the conway ledger era,
+as described in CIP-1694.
+In particular, the ledger rules will be restructured as follows:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">   BBODY</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |-------------------------------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v                               v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   TICK                            LEDGERS</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |                               |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    |---------|                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">    v         v                     v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">   RUPD     ~NEWEPOCH~            ~LEDGER~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                     |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |----------|          |--------|-------------------|-----------|</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v          v                   v                   v           v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">            ~EPOCH~     +ENACTMENT+         DELEGS              UTXOW       +TALLY+</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |                              |                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              |---------|------------|       v                   |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">              v         v            v      DELPL                v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">             SNAP      POOLREAP    -UPEC-    |                  UTXO</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             |--------|          |</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                             v        v          v</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">                                            POOL     DELEG     ~UTXOS~</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">-..- Removed</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">+..+ Added</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">~..~ Modified</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Moreover, the ledger state will also be restructured in accordance with the new rules.
+In the conway code, we have now removed UPEC, added TALLY, and stubbed ENACTMENT.
+We have also adapted all the data structures in the ledger state.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3216" target="_blank" rel="noopener noreferrer">pull-3216</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="pdf-hosting">PDF hosting<a class="hash-link" href="#pdf-hosting" title="Direct link to heading">​</a></h3><p>We now build all of our PDFs using a GitHub action which is triggered by pushing a tag
+with a specific form, <code>cardano-ledger-spec-YYYY-MM-DD</code>.
+The action creates a GitHub release containing the PDFs.
+The links in the main ledger README now point to the PDFs in the latest release.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3245" target="_blank" rel="noopener noreferrer">pull-3245</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3260" target="_blank" rel="noopener noreferrer">pull-3260</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="powering-the-new-ledger-api">Powering the new ledger API<a class="hash-link" href="#powering-the-new-ledger-api" title="Direct link to heading">​</a></h3><p>We have now removed all the <code>HasField</code> instances from the protocol parameter data types,
+and replaced them with lenses.
+This is probably the last major restructuring that the ledger team will do on the code base
+for the API for a while
+(the Plutus tools team will be working on it next, see <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">here</a>).
+We also added a new helpful function <code>ensureMinCoinTxOut</code>.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3242" target="_blank" rel="noopener noreferrer">pull-3242</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3248" target="_blank" rel="noopener noreferrer">pull-3248</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="constraint-based-generators">Constraint-based generators<a class="hash-link" href="#constraint-based-generators" title="Direct link to heading">​</a></h3><p>Our largest scale property tests generate an initial ledger state and a long sequence of valid blocks
+which span several epochs, mimicking a real network.
+These tests are, in theory, excellent for checking properties.
+They are, however, very difficult to maintain and are not as random as we would like
+(a lot of bias has to be introduced to keep the ledger state in enough order to keep generating blocks).</p><p>We would like to switch to tests which instead generate a random ledger state representative
+of not just an initial state, generate a single random valid block, and then test our properties.
+The hope is that these will be much more random and easier to maintain.</p><p>We have finished a proof of concept are encouraged that this approach could work!</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3219" target="_blank" rel="noopener noreferrer">pull-3219</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3244" target="_blank" rel="noopener noreferrer">pull-3244</a> massive CI speedup</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3249" target="_blank" rel="noopener noreferrer">pull-3249</a> better types for fees in the protocol parameters</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3264" target="_blank" rel="noopener noreferrer">pull-3264</a> move our annotator code to the <code>cardano-ledger-binary</code> package where it belongs</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3239" target="_blank" rel="noopener noreferrer">pull-3239</a> move the <code>Wdrls</code> type to the <code>Core</code> module.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-05-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-05T00:00:00.000Z" itemprop="datePublished">January 5, 2023</time> · <!-- -->5 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team finished up the remaining work for tracking individual depots,
+built out the new Conway era transaction body (in line with CIP-1694),
+greatly reduce some problematically large calculations on the epoch boundary,
+and addressed technical debt.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="finishing-the-deposit-tracking">Finishing the deposit tracking<a class="hash-link" href="#finishing-the-deposit-tracking" title="Direct link to heading">​</a></h3><p>The initial work on the individual deposit tracking project focused only on correctness.
+As this is a large data structure
+(since its size is linear with respect to the number of registered stake credentials),
+it is very important that we also reduce the memory overhead as much as possible.
+Fortunately, we were able to add very little overhead for the deposits by using existing
+efficient data structures. The extra tracking now only incurs one word (8 bytes)
+per registered stake credential.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3217" target="_blank" rel="noopener noreferrer">pull-3217</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-conway-era-transaction">New Conway era transaction<a class="hash-link" href="#new-conway-era-transaction" title="Direct link to heading">​</a></h3><p>We implemented the Conway era transaction body, which is in line with CIP-1694.
+Note that the Conway era implements, losing speaking, the parts of CIP-1694 that are not
+related to the liquid democracy (the &quot;DReps&quot;).
+The new transaction body adds the new governance actions and votes,
+while also deprecating the old governance structures
+(i.e. the old protocol parameter updates and MIR certificates).</p><p>We also now have the wire specification (CDDL file) and serialization code in place.
+The wire specification is still subject to change while we work on the Conway era,
+but it is now usable and has proper testing support
+(so that, for example, the serialization round-trips, etc).</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3176" target="_blank" rel="noopener noreferrer">pull-3176</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3226" target="_blank" rel="noopener noreferrer">pull-3226</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="optimizing-the-tickf-transition">Optimizing the <code>TICKF</code> transition<a class="hash-link" href="#optimizing-the-tickf-transition" title="Direct link to heading">​</a></h3><p>Every since the release of the Shelley era, we have been working to reduce the computational load
+placed on the node by the ledger at the epoch boundary.
+While still not perfect, we believe that we have removed one of the final problematically long
+epoch boundary computations that exacerbate situations like
+<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">this</a>.
+In particular, the problem involved the way in which the consensus layer obtains a view of the
+ledger for the purposes of checking the leadership schedule in a new epoch.
+We implemented a stopgap measure which now only incurs a single multi-second cost once per epoch
+instead of potentially several multi-second costs while the networks waits for the first block
+of a new epoch to be minted.</p><p>See:</p><ul><li>An <a href="https://github.com/input-output-hk/cardano-ledger/blob/ea48d4815946c4f35239eb41815fe06cd6ffec2e/docs/adr/2022-12-12_007-optimize-ledger-view.md" target="_blank" rel="noopener noreferrer">ADR</a> about the decision.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3209" target="_blank" rel="noopener noreferrer">pull-3209</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>We closed the year out with a lot of reduction to the technical debt!</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-ledger-event">Improved ledger event<a class="hash-link" href="#improved-ledger-event" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3212" target="_blank" rel="noopener noreferrer">pull-3212</a> - The ledger events are not guaranteed to appear in any given order within a block.
+For this reason, motivated by the use case in db-sync, the <code>TotalDeposits</code> event now
+includes a transaction ID and emits the <em>change</em> in deposits instead of the value.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="improved-type-saftey">Improved type saftey<a class="hash-link" href="#improved-type-saftey" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3208" target="_blank" rel="noopener noreferrer">pull-3208</a> - We replaced <code>NominalDiffTime</code> with a newtype wrapper. The problem was that our CBOR
+encoders and decoders were using the wrong level of precision, having to due with with
+the Shelley genesis file. We removed the potential problem with a newtype wrapper.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3167" target="_blank" rel="noopener noreferrer">pull-3167</a> - We now use a GADT to ensure consistency of the Plutus language in the types
+for <code>TransactionScriptFailure</code> and <code>PlutusDebug</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="codemodule-organization">Code/Module organization<a class="hash-link" href="#codemodule-organization" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and Mary eras had an unusual relationship in our codebase,
+due to the uncertainly of release dates while we were implementing them.
+In particular, they were coupled in way that is different from the rest of the code base.
+With hindsight on our side, we split the combined <code>shelley-ma</code> Haskell package into two
+separate ledger era packages, which is now consistent with the rest of the repository
+and module structure.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We created a core test sub-library, cleaning up a lot of our property test
+generator code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3210" target="_blank" rel="noopener noreferrer">pull-3210</a> - We moved the <code>KeyPair</code> type to the test library. Outside of testing,
+the ledger does not need to deal with signing keys, and since this is a topic that
+deserves the utmost care, it is best to make it clear that our use of signing keys
+is only for testing.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3229" target="_blank" rel="noopener noreferrer">pull-3229</a> - We split the <code>Cardano.Ledger.Alonzo.Data</code> module, which is more consistent with the rest
+of the codebase.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="revert-pointer-address-deprecation">Revert pointer address deprecation<a class="hash-link" href="#revert-pointer-address-deprecation" title="Direct link to heading">​</a></h4><p>Thanks to one of our excellent internal auditors,
+<a href="https://github.com/jmhrpr" target="_blank" rel="noopener noreferrer">@jmhrpr</a>,
+we now have a better plan for deprecating pointer addresses.
+This meant that we had to revert the previous work to deprecate them.</p><p>See:</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/issues/3161" target="_blank" rel="noopener noreferrer">issue-3161</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3215" target="_blank" rel="noopener noreferrer">pull-3215</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="miscellaneous">Miscellaneous<a class="hash-link" href="#miscellaneous" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3205" target="_blank" rel="noopener noreferrer">pull-3205</a> - We removed deprecated type synonyms.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3218" target="_blank" rel="noopener noreferrer">pull-3218</a> - We cleaned up the address deserialization.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3223" target="_blank" rel="noopener noreferrer">pull-3223</a> - We fixed faulty address deserialization tests.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3222" target="_blank" rel="noopener noreferrer">pull-3222</a> - We switched to a general type family <code>TxOut</code> from concrete ones,
+reducing many constraints.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3224" target="_blank" rel="noopener noreferrer">pull-3224</a> - <code>ShelleyGenesis</code> is now parameterized by crypto instead of by era.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3170" target="_blank" rel="noopener noreferrer">pull-3170</a> - We set the cabal-version to 3.0 in our projects.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed the now useless <code>EncodeMint</code>/<code>DecodeMint</code> classes.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3225" target="_blank" rel="noopener noreferrer">pull-3225</a> - We switch from <a href="https://hackage.haskell.org/package/ormolu" target="_blank" rel="noopener noreferrer">ormolu</a> to
+<a href="https://hackage.haskell.org/package/fourmolu" target="_blank" rel="noopener noreferrer">fourmolu</a>.
+The reason was to be able to finally have more diff friendly code!</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-09-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-09T00:00:00.000Z" itemprop="datePublished">December 9, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The Plutus tools team at IOG has started helping the ledger team to build out a user friendly
+<code>cardano-ledger-api</code> package!
+A <a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>
+will be filled out in the days ahead,
+people interested in the API can use it to follow along and join in on the conversations.</p><p>The ledger team has started using
+<a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">architectural decision records</a>
+to leave a record of important decisions that the team makes.
+We will retroactively go back through past decisions and make ADRs for them.</p><p>The logic to track individual deposits is now nearly in place.
+We are prioritizing correctness with our first pull request, and will follow up with
+performance optimizations and general cleanup next.</p><p>Pointer addresses are being deprecated with the Cardano major protocol version 8.
+See <a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a>
+for more context.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h4 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ledger-api">Cardano ledger API<a class="hash-link" href="#cardano-ledger-api" title="Direct link to heading">​</a></h4><p>The <strong>Plutus tools team</strong> has taken our minimal <code>cardano-ledger-api</code> package and started filling it
+out and adding much needed documentation.
+They have also added doctests!
+In the days to come, the Plutus tools team will map out a lot more work for the API and record
+it in this
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/5" target="_blank" rel="noopener noreferrer">GitHub project</a>.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3182" target="_blank" rel="noopener noreferrer">pull-3182</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3188" target="_blank" rel="noopener noreferrer">pull-3188</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="architectural-decision-records-adrs">Architectural Decision Records (ADRs)<a class="hash-link" href="#architectural-decision-records-adrs" title="Direct link to heading">​</a></h4><p>We are now providing more context and leaving a record of important decisions that are made
+in the ledger. The first ADR explains the very lightweight process.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3177" target="_blank" rel="noopener noreferrer">pull-3177</a> (rendered <a href="https://github.com/input-output-hk/cardano-ledger/blob/6fc0e198560fb4169d435da882394930789a8af8/docs/adr/2022-12-01_001-record-architectural-decisions.md" target="_blank" rel="noopener noreferrer">here</a>)</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="tracking-individual-deposits">Tracking individual deposits<a class="hash-link" href="#tracking-individual-deposits" title="Direct link to heading">​</a></h4><p>See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3190/files" target="_blank" rel="noopener noreferrer">ADR-3</a>
+for background.
+We now have the logic in place to track individual deposits, and a host of property tests
+to make sure that the logic is correct.
+The current implementation uses more memory than it needs to, and we will address that next,
+with our hope being to only use one word (8 bytes) per registered stake credential.
+There is a fair amount of other cleanup needed for general maintainability.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3195" target="_blank" rel="noopener noreferrer">pull-3195</a></li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3202" target="_blank" rel="noopener noreferrer">pull-3202</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="removing-pointer-addresses">Removing pointer addresses<a class="hash-link" href="#removing-pointer-addresses" title="Direct link to heading">​</a></h4><p>Pointer addresses, which have never seen any real use
+(there are something like eleven on mainnet), are being deprecated starting at Cardano major
+version 9.
+<a href="https://github.com/cardano-foundation/CIPs/pull/374" target="_blank" rel="noopener noreferrer">CPS-0002</a> gives the context.
+We are disabling them by first preventing transaction outputs containing them
+from being serialized by the node at the moment we switch to version 9.
+At the hard fork after that, we will translate the existing few pointer addresses
+to enterprise addresses.</p><p>See</p><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3174" target="_blank" rel="noopener noreferrer">pull-3174</a></li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h4><ul><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a> - Sometimes we have to put safeguards in place for hard forks which may never
+be exercised. After we have passed the given hardfork, we are able to clean up the code
+and simplify our logic. We removed all of the ones that we are currently easily able to.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3165" target="_blank" rel="noopener noreferrer">pull-3165</a> - We improved the type safety of our code while also discovering and fixing
+a serialization bug.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3172" target="_blank" rel="noopener noreferrer">pull-3172</a> - We removed dead code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3175" target="_blank" rel="noopener noreferrer">pull-3175</a> - The Allegra and the Mary code used to be coupled in a particular way the we grew to
+dislike. We made these two ledger eras now uniform with the rest of our code base.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3184" target="_blank" rel="noopener noreferrer">pull-3184</a> - We organized our property testing code.</li><li><a href="https://github.com/input-output-hk/cardano-ledger/pull/3200" target="_blank" rel="noopener noreferrer">pull-3200</a> - The Plutus tools teams fixed an outstanding bug in the translation from the
+ledger state to the Plutus script context.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-23-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-23T00:00:00.000Z" itemprop="datePublished">November 23, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We released <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a>,
+our proposal for entering the <a href="https://roadmap.cardano.org/en/voltaire/" target="_blank" rel="noopener noreferrer">Voltaire phase</a>.
+<strong>Please come join the discussion</strong>, this will be an incredibly exciting transition for
+Cardano and we want everyone to participate!</p><p>We now have a sensible way to version all of the serialization schemes used in the ledger.
+The draft pull request was polished, reviewed, and merged this week.
+This solves many problems that have vexed us since the beginning of the Shelley ledger era.</p><p>Everyone working on the Cardano node is working together to improve our release process,
+and the ledger team in particular dedicated one engineer to help with these efforts
+for the next release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="the-conway-ledger-era">The Conway ledger era<a class="hash-link" href="#the-conway-ledger-era" title="Direct link to heading">​</a></h3><p>The current proposal in <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a> encompasses two new ledger eras.
+The first era will be called Conway, after the English mathematician John Horton Conway.
+The community facing aspects of the Conway ledger era will be very minimal,
+but it will pave the way for introducing liquid democracy.
+The details can be viewed <a href="https://github.com/input-output-hk/cardano-ledger/projects/4" target="_blank" rel="noopener noreferrer">here</a>.
+We do not yet have a formal specification for the Conway era.
+Our plan is to debut the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>.
+Briefly, the Conway ledger era will:</p><ul><li>introduce SPO voting for hard forks (in the spirit of the now abandoned <a href="https://github.com/cardano-foundation/CIPs/pull/318" target="_blank" rel="noopener noreferrer">CIP-47</a>)</li><li>provide an on-chain mechanism for rotating the governance keys</li><li>re-plumb the ledger rules involving governance to be in line with <a href="https://github.com/cardano-foundation/CIPs/pull/380" target="_blank" rel="noopener noreferrer">CIP-1694</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="versioned-cbor">Versioned CBOR<a class="hash-link" href="#versioned-cbor" title="Direct link to heading">​</a></h3><p>We now have the ability to easily tie our serialization schemes to the Cardano
+major protocol version.
+We still aim to preserve backwards compatibility as much as possible, but we now have a principled
+plan for resolving problems (see <a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">CIP-ledger-cbor</a>).
+In particular, we can now address several long standing issues, such as
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>, <a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>, and <a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>. </p><p>The final (and massive!) pull request which brought us the versioning is <a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deposit-tracking">Deposit tracking<a class="hash-link" href="#deposit-tracking" title="Direct link to heading">​</a></h3><p>The draft pull request which was exploring how best to track individual deposits
+is much closer now to being ready to take out of draft (<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>).
+For background on the issue, see <a href="https://github.com/input-output-hk/cardano-ledger/issues/3113" target="_blank" rel="noopener noreferrer">issue-3113</a>.
+This is quite an invasive change which effects many of our tests, which we are now addressing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt">Technical debt<a class="hash-link" href="#technical-debt" title="Direct link to heading">​</a></h3><p>As always, we keep working on technical debt.
+We have deduplicated a some things: <a href="https://github.com/input-output-hk/cardano-ledger/pull/3129" target="_blank" rel="noopener noreferrer">pull-3129</a>, <a href="https://github.com/input-output-hk/cardano-ledger/pull/3162" target="_blank" rel="noopener noreferrer">pull-3162</a>.
+We have memoized a problematic computation (though more due diligence is needed before we can
+merge): <a href="https://github.com/input-output-hk/cardano-ledger/pull/3141" target="_blank" rel="noopener noreferrer">pull-3141</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node-release">Node release<a class="hash-link" href="#node-release" title="Direct link to heading">​</a></h3><p>We have been helping with the node release efforts. See <a href="https://github.com/input-output-hk/cardano-node/pull/4608" target="_blank" rel="noopener noreferrer">pull-4608</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>I am extremely excited to say that we now have a pull request up which introduces our new versioned
+CBOR serialization. This was an enormous effort, but it will solve a host of problems that we have
+had since the Shelley phase. It will take time to properly review it, and we will
+need to put in a lot of effort to integrate it with the downstream components, but this is  a huge
+milestone. Additionally, we have a new CIP proposing a deprecation cycle for the transaction
+serialization schemes.</p><p>We also have a draft pull request that reworks how deposits are tracked. Users of the system will
+not notice any difference, but it is a necessary change needed to prepare the way for
+decentralizing the governance of Cardano.</p><p>Finally, we continued to address technical debt. In particular, we continued to make progress on
+bringing coherency and consistency to the code base with a common naming convention, and
+improving some error messages.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><ul><li>We have a pull request up for our new versioned CBOR serialization.
+When we encounter a problem with our deserializers, it can be very difficult to implement a fix.
+It is difficult because we can only fix such issues during a hard fork, and leading up to the
+hard fork we must maintain two serializations for the same type in order to not cause unintended
+network splitting (the problematic version must be used before the hard fork,
+and the fixed version is used afterwards).
+This can be especially tricky with the <code>FromCBOR</code> typeclass, since it is not always easy to
+search for where all the problematic uses are located.
+The new versioned CBOR serialization allows us to gracefully handle this transition.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3138" target="_blank" rel="noopener noreferrer">pull-3138</a>].</li><li>We proposed a CIP for backwards compatibility of the transaction serialization schemes.
+See [<a href="https://github.com/cardano-foundation/CIPs/pull/372" target="_blank" rel="noopener noreferrer">pull-372</a>].</li><li>We have draft for the new deposit tracking.
+This draft is not as memory efficient as the final version will be,
+but it is a sufficient proof of concept that we can write property tests against, ensuring
+that we have not changed the semantics.
+We will optimize after we are sure of the correctness.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3127" target="_blank" rel="noopener noreferrer">pull-3127</a>].</li><li>We now provide better support for debugging failed Plutus scripts in an important helper
+function, named <code>evaluateTransactionExecutionUnits</code>.
+In particular, it now returns all the information needed to rerun the script with exactly the
+same arguments. This feature will end up appearing in the CLI and other tools from the Plutus
+tools team.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3135" target="_blank" rel="noopener noreferrer">pull-3135</a>].</li><li>We did a lot more renaming to bring coherency and consistency to the code base.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3126" target="_blank" rel="noopener noreferrer">pull-3126</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3120" target="_blank" rel="noopener noreferrer">pull-3120</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3118" target="_blank" rel="noopener noreferrer">pull-3118</a>], and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3116" target="_blank" rel="noopener noreferrer">pull-3116</a>].</li><li>We have added a few things to the ledger repository to make it conform to the
+<a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer">Cardano Engineering Handbook</a>
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3139" target="_blank" rel="noopener noreferrer">pull-3139</a>].</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/ledger/page/4"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/ledger/page/6"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>30 posts tagged with &quot;ledger&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have made the decision to use the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+in place of a LaTeX spec for the next ledger era, and have added a lot of basic infrastructure
+to the model. In particular, we now have a lot of support for axiomatic set theory.
+While the next ledger era is still in the design phase, most of the team remains working
+on technical debt.
+In particular, we have moved a lot more code out of the Shelley specific modules and into
+a ledger core module, we have finished up our benchmarking around the problematic <code>TICKF</code>
+ledger transition (while improving the performance), made conveniences to the development
+environment, cleaned up all the recent changes to the cost model, added a lot of documentation,
+fixed some flaky tests, and deleted some dead code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="axiomatic-set-theory">Axiomatic Set Theory<a class="hash-link" href="#axiomatic-set-theory" title="Direct link to heading">​</a></h3><p>The formal ledger model now has support for much of the set theory that we make use of in
+the formal ledger specifications. See [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>].</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>We have addressed issues with two of our most problematic and flaky tests.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">pull-3039</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3093" target="_blank" rel="noopener noreferrer">pull-3093</a>].</li><li>We have added more documentation and tests to the Twiddler module. This is a module which
+makes our CBOR serialization round-trip tests much more robust, and will also hopefully
+help enforce the mandate for downstream libraries to never re-serialize data that needs
+to be hashed. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3095" target="_blank" rel="noopener noreferrer">pull-3095</a>]
+(we cannot merge 3095 just yet, due to a preference for merging other features).</li><li>We have finished our long analysis of the problematic <code>TICKF</code> transition.
+We now have a lot of benchmarks surrounding this code, and have added performance improvements.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>].</li><li>We have restored support for
+<a href="https://hackage.haskell.org/package/ghcid" target="_blank" rel="noopener noreferrer">ghcid</a>
+in our repository. This is a tool for developing with Haskell that many of us find greatly
+improves our productivity by providing us with constant feedback from the type checker.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3112" target="_blank" rel="noopener noreferrer">pull-3112</a>].</li><li>After much activity on the cost model, we have done some final clean up of the code.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3075" target="_blank" rel="noopener noreferrer">pull-3075</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3101" target="_blank" rel="noopener noreferrer">pull-3101</a>].</li><li>We moved a lot of the existing user facing documentation regarding native tokens into the
+ledger repository, and cleaned it up
+(most of the heavy lifting was done by our amazing technical writers).
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3091" target="_blank" rel="noopener noreferrer">pull-3091</a>].</li><li>We removed dead code. See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3089" target="_blank" rel="noopener noreferrer">pull-3089</a>].</li><li>We moved a lot of code from the Shelley specific libraries to the ledger core library.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3109" target="_blank" rel="noopener noreferrer">pull-3109</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3110" target="_blank" rel="noopener noreferrer">pull-3110</a>].</li><li>We&#x27;ve removed more of the awkward legacy template Haskell names.
+See [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3108" target="_blank" rel="noopener noreferrer">pull-3108</a>].</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-14-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-14T00:00:00.000Z" itemprop="datePublished">October 14, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The ledger team is still primarily focused on addressing
+<a href="https://github.com/input-output-hk/cardano-ledger/issues?q=is%3Aissue+is%3Aopen+label%3A%22%3Acredit_card%3A+technical-debt%22" target="_blank" rel="noopener noreferrer">technical</a>
+<a href="https://github.com/input-output-hk/cardano-ledger/projects/3" target="_blank" rel="noopener noreferrer">debt</a>.
+We now have the infrastructure for versioning our serialization schemes,
+which we continue to put into action.
+We have made first steps towards getting proper support for the
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger repository</a>
+(in particular, we&#x27;ve added nix builds and
+continuous integration support).
+We are wrapping up an investigation of the performance of a critical
+function used by the consensus layer for leader checks.
+Finally, we are improving the packaging and versioning of our code.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed-technical-debt">Completed Technical Debt<a class="hash-link" href="#completed-technical-debt" title="Direct link to heading">​</a></h3><ul><li>Because the Shelley ledger era was a complete re-write of the Byron ledger era, a lot of
+our code lives in the <code>cardano-ledger-shelley</code> package, though with hindsight we can say that
+much of it should live in <code>cardano-ledger-core</code>.
+We continue to move things to <code>cardano-ledger-core</code>, and have much more to come. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3059" target="_blank" rel="noopener noreferrer">pull-3059</a>]</li><li>We now have the infrastructure to support <strong>versioned</strong> serialization schemes.
+The inability to do this has caused us a lot difficulties,
+such as [<a href="https://github.com/input-output-hk/cardano-ledger/issues/3003" target="_blank" rel="noopener noreferrer">issue-3003</a>], [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2965" target="_blank" rel="noopener noreferrer">issue-2965</a>] and [<a href="https://github.com/input-output-hk/cardano-ledger/issues/2444" target="_blank" rel="noopener noreferrer">issue-2444</a>].
+We are still in the process of switching to the versioned serialization scheme
+(such as [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3078" target="_blank" rel="noopener noreferrer">pull-3078</a>]),
+but the infrastructure was completed in [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3063" target="_blank" rel="noopener noreferrer">pull-3063</a>].</li><li>We now have proper nix and CI support for the formal ledger project. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/19" target="_blank" rel="noopener noreferrer">pull-19</a>]</li><li>A separate team is helping bring support for
+<a href="https://github.com/input-output-hk/cardano-haskell-packages" target="_blank" rel="noopener noreferrer">CHaP</a>
+to all the cardano-node repositories.
+We have been helping out with this effort.</li></ul><ul><li>A separate team continues working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4.
+We have been helping out with this effort.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress-technical-debt">In-progress Technical Debt<a class="hash-link" href="#in-progress-technical-debt" title="Direct link to heading">​</a></h3><p>We also have several fairly large pull-requests in review
+that we are working on.</p><ul><li>In an on-going attempt to build out a more user-friendly API,
+we continue to remove <code>HasField</code> instances in place of using micro-lenses.
+The protocol parameters, in particular, are being worked on. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3045" target="_blank" rel="noopener noreferrer">pull-3045</a>]</li><li>We are also renaming record fields to be consistent across the repository. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3062" target="_blank" rel="noopener noreferrer">pull-3062</a>]</li><li>We are now cleaning up all the work we did to understand the performance
+of the TICKF transition. We have some improvements to the computatation
+as well. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3068" target="_blank" rel="noopener noreferrer">pull-3068</a>]</li><li>We are adding more documentation, in particular to our <code>Twiddler</code> functionality. [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3073" target="_blank" rel="noopener noreferrer">pull-3073</a>]</li><li>The formal ledger is adding support for finite set theory. [<a href="https://github.com/input-output-hk/formal-ledger-specifications/pull/20" target="_blank" rel="noopener noreferrer">pull-20</a>]</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-30-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-30T00:00:00.000Z" itemprop="datePublished">September 30, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have continued focusing nearly entirely on addressing technical debt.
+A lot of design work has begun for the next ledger era,
+but we do not yet have anything concrete to share.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-issues-completed">Technical debt issues completed<a class="hash-link" href="#technical-debt-issues-completed" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/1676" target="_blank" rel="noopener noreferrer">issue-1676</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>] We have finally removed the ledger dependency on the
+<code>cardano-prelude</code> package. It was barely used in the ledger repository, and it added a dependency
+that we did not want to maintain. It was a bit difficult to remove, and we had
+to coordinate removing it from cardano-base.
+A lot ended up going into <a href="https://github.com/input-output-hk/cardano-ledger/pull/2992" target="_blank" rel="noopener noreferrer">pull-2992</a>, due to the coordination effort, and we ended
+up updating Plutus as well.
+This means that we&#x27;ve now also made a lot of progress on the problematic cost model serialization
+issues described in <a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">issue-2902</a>.
+In particular, after we resolve <a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>, we will not have to wait an epoch before
+releasing a cost model for a new version of Plutus, as we had to do for the Vasil HF.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3046" target="_blank" rel="noopener noreferrer">issue-3046</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3055" target="_blank" rel="noopener noreferrer">pull-3055</a>] We moved a module that is now only used in Byron to a Byron package.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3047" target="_blank" rel="noopener noreferrer">issue-3047</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3054" target="_blank" rel="noopener noreferrer">pull-3054</a>] We improved the interface to the <code>Value</code> (multi-asset) type.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3044" target="_blank" rel="noopener noreferrer">pull-3044</a>] We debugged and fixed a tricky compilation issue. Certain kinds of field updates
+were adding approximately 20 minutes to our compile time!</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/2932" target="_blank" rel="noopener noreferrer">issue-2932</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3036" target="_blank" rel="noopener noreferrer">pull-3036</a>] As a part of our ongoing re-organization of the codebase, we
+have added a <code>Cardano.Ledger.[Era].Core</code> module to each ledger era that has a TxBody class.
+Most classes defined in the era should go in this new module.
+We also re-export the <code>Cardno.Ledger.Core</code> module and the previous <code>Cardano.Ledger.[Era].Core</code>
+modules from each era.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="technical-debt-in-progress">Technical debt in progress<a class="hash-link" href="#technical-debt-in-progress" title="Direct link to heading">​</a></h3><ul><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3034" target="_blank" rel="noopener noreferrer">issue-3034</a>][<a href="https://github.com/input-output-hk/cardano-ledger/issues/3035" target="_blank" rel="noopener noreferrer">issue-3035</a>][<a href="https://github.com/input-output-hk/cardano-node/issues/4421" target="_blank" rel="noopener noreferrer">node-issue-4421</a>] We are continuing to write benchmarks to understand exactly where
+all the time is being spent on executing the <code>TICKF</code> transition.
+The consolidation of the per-stake-credential stake distribution to the per-stake-pool
+distribution does seem to account for a large amount of time (near a second as written, which we
+have down to about half a second with some optimizations),
+but this does not account for everything.
+Applying the reward update may also be a big contributing factor.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/pull/3033" target="_blank" rel="noopener noreferrer">pull-3033</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3038" target="_blank" rel="noopener noreferrer">pull-3038</a>][<a href="https://github.com/input-output-hk/cardano-ledger/pull/3041" target="_blank" rel="noopener noreferrer">pull-3041</a>] A separate team is working on upgrading all the
+cardano-node repositories to work with ghc 9.2.4. We have been helping out with this effort.</li><li>The nix scripts used to build our new
+<a href="https://github.com/input-output-hk/formal-ledger-specifications" target="_blank" rel="noopener noreferrer">formal ledger model</a>
+do not work consistently for everyone, and we have been working on fixing these issues.</li><li>[<a href="https://github.com/input-output-hk/cardano-ledger/issues/3014" target="_blank" rel="noopener noreferrer">issue-3014</a>] We are still working on adding a versioning scheme to all of the ledger
+serializers.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-16-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-16T00:00:00.000Z" itemprop="datePublished">September 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>We have been focused nearly entirely on addressing technical debt.</p><ul><li>We introduced more consistent naming across eras, this time for the auxiliary data.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3032" target="_blank" rel="noopener noreferrer">3032</a>.</li><li>We made clear how the <code>consumed</code> functions differs between eras (which was a previous source of
+confusion), and added some related support to the fledgling ledger API.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3016" target="_blank" rel="noopener noreferrer">3016</a>.</li><li>We added clarity and organizational consistency to the main ledger era type synonyms.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3017" target="_blank" rel="noopener noreferrer">3017</a>.</li><li>We removed code duplication related to the input data hashes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3018" target="_blank" rel="noopener noreferrer">3018</a>.</li><li>We split up a large module into smaller components. The large module was actually causing our
+CI to time out.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3020" target="_blank" rel="noopener noreferrer">3020</a>.</li><li>We cleaned up stale information in our cabal files, and upgraded cabal 3.8.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3023" target="_blank" rel="noopener noreferrer">3023</a>,
+<a href="https://github.com/input-output-hk/cardano-ledger/pull/3031" target="_blank" rel="noopener noreferrer">3031</a>,
+and <a href="https://github.com/input-output-hk/cardano-ledger/pull/3028" target="_blank" rel="noopener noreferrer">3028</a>.</li><li>We made consistent, standalone <code>TxOut</code> (transaction output) modules for every era.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3024" target="_blank" rel="noopener noreferrer">3024</a>.</li><li>We brought consistency to a maddening inconsistent use of type variables indicating the specific
+choice of cryptographic primitives. In particular, all uses of <code>crypto</code> have been renamed to <code>c</code>.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3027" target="_blank" rel="noopener noreferrer">3027</a>.</li><li>We did a clean up of the types in the Alonzo era. In particular, we switched to more parametric
+types that will compose better in the future and which simplifies the constraints.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3029" target="_blank" rel="noopener noreferrer">3029</a>.</li><li>We consolidated some existing fragmented logic regarding how we gather the scripts needed for a
+given transaction. This is a much needed cleanup to prevent future mistakes.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3019" target="_blank" rel="noopener noreferrer">3019</a>.</li><li>We fixed a problem with our generators that was causing a fair number of our property tests to
+fail in CI.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3039" target="_blank" rel="noopener noreferrer">3039</a>.</li><li>We have started the work to update Plutus. This will bring support for SECP in the next major
+protocol version, and also address a
+<a href="https://github.com/input-output-hk/cardano-ledger/issues/2902" target="_blank" rel="noopener noreferrer">problem</a>
+that we current have evolving the cost models.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3030" target="_blank" rel="noopener noreferrer">3030</a>.</li><li>We addressed a small issue that came up when integrating the conway era downstream, namely
+the lack of some serialization instances.
+See <a href="https://github.com/input-output-hk/cardano-ledger/pull/3022" target="_blank" rel="noopener noreferrer">3022</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-01-ledger">Ledger Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/JaredCorduan.png" alt="Jared Corduan"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/JaredCorduan" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jared Corduan</span></a></div><small class="avatar__subtitle" itemprop="description">Ledger Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="ledger-update">Ledger Update<a class="hash-link" href="#ledger-update" title="Direct link to heading">​</a></h2><p>Since finishing up support for the Vasil Hardfork, the ledger team has been
+focused on two main things: a new ledger era and technical debt.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-minimal-ledger-era">New minimal ledger era<a class="hash-link" href="#new-minimal-ledger-era" title="Direct link to heading">​</a></h3><p>We have implemented a new ledger era named <code>conway</code> which is nearly identical
+to the <code>babbage</code> era. This has been the first time that we have been able to see
+what a minimal ledger era looks like. We have finished this task, modulo any
+integration issues that might come up. The only thing that the <code>conway</code> era
+does differently from the <code>babbage</code> era is provide support for rotating
+the master keys using the hardfork combinator&#x27;s state translation.
+We may end up adding features to the <code>conway</code> era, but it is a nice exercise
+seeing what it looks like to get a minimal ledger era supported in all the
+downstream components.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="addressing-technical-debt">Addressing technical debt<a class="hash-link" href="#addressing-technical-debt" title="Direct link to heading">​</a></h3><p>We have been addressing technical debt, mostly in an effort to make the
+repository a more friendly code base to work in.</p><ul><li>We have begun work on a ledger API, called <code>cardano-ledger-api</code>.</li><li>We have done a big re-design of the major type classes used in the ledger.
+With hindsight on our side, we now have something much more organized and
+easier to use.</li><li>We have done a lot of re-naming. The names across eras are now much more
+uniform, avoid certain confusions that plagued us, and are clearer in where
+they are from.</li><li>We have reduced a lot of code duplication that could lead to bugs if you
+do not have the whole code base in your head.</li><li>We have added a handful of performance improvements.</li><li>We added type safety in a number of locations. In particular, the type of
+values that can be minted in a transaction no longer allow for Lovelace
+in the type, and some functions which used to handle both timelock scripts
+and plutus script now correctly enoforce at the type level that only one of
+them can be used.</li><li>We made our generators so that they now produce a much richer set of
+valid serializations. There is room within CBOR to serialize the same
+data structure in multiple ways, and it is helpful to have the generators
+use a wide variety.</li><li>We have begun re-organizing our test suites.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/ledger/page/5"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-06T00:00:00.000Z" itemprop="datePublished">December 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in adapting the Mithril client library for WASM compilation and providing a JavaScript API for it. They also completed the optimization of the aggregator&#x27;s performance. Additionally, the team initiated the implementation of a testing Mithril network for SanchoNet and conducted threat modeling and risk analysis for P2P networking.</p><p>Finally, they enhanced the developer experience of the Mithril client library by providing ready-to-run examples in the repository and implemented a workflow to manually publish libraries on crates.io.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Create a test network on <code>Sanchonet</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1173" target="_blank" rel="noopener noreferrer">#1173</a></li><li>Worked on the issue <strong>Upgrade breaking changes crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1357" target="_blank" rel="noopener noreferrer">#1357</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Completed the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Completed the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> examples full crates</strong> <a href="https://github.com/input-output-hk/mithril/issues/1385" target="_blank" rel="noopener noreferrer">#1385</a></li><li>Completed the issue <strong>Manual publication to crates.io with GitHub action</strong> <a href="https://github.com/input-output-hk/mithril/issues/1380" target="_blank" rel="noopener noreferrer">#1380</a></li><li>Completed the issue <strong>Remove <code>sqlite</code> dependency from <code>mithril-client</code> crate</strong> <a href="https://github.com/input-output-hk/mithril/issues/1390" target="_blank" rel="noopener noreferrer">#1390</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-29T00:00:00.000Z" itemprop="datePublished">November 29, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released the initial version of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer">Mithril client library</a>, enabling developers to integrate core Mithril features into their applications. They also released a new distribution, <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a>, which includes support for slim certificate production by the aggregator, along with bug fixes and performance improvements.</p><p>The team also introduced the initial version of Cardano/Mithril node communication enhancements,  implemented by TxPipe as part of the Catalyst project. They made progress in decentralizing Mithril networks, including testing the Mithril peer-to-peer (P2P) relay on a test network and conducting threat modeling and risk analysis for  P2P networking. Additionally, they started working on adapting the Mithril client library for WASM compilation and made progress in optimizing aggregator performance. </p><p>Finally, they fixed inaccuracies in the verbosity level of logs across most nodes and worked on troubleshooting for some users.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Release of the <a href="https://crates.io/crates/mithril-client" target="_blank" rel="noopener noreferrer"><code>mithril-client</code></a> library crate</li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2023/11/27/mithril-client-library-released" target="_blank" rel="noopener noreferrer">dev blog post</a> about the released Mithril library</li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2347.0" target="_blank" rel="noopener noreferrer"><code>2347.0</code></a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> WASM library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1336" target="_blank" rel="noopener noreferrer">#1336</a></li><li>Worked on the issue <strong>Enhance Mithril/Cardano node communication</strong> <a href="https://github.com/input-output-hk/mithril/issues/1315" target="_blank" rel="noopener noreferrer">#1315</a></li><li>Worked on the issue <strong>P2P threat modeling and risk analysis</strong> <a href="https://github.com/input-output-hk/mithril/issues/1350" target="_blank" rel="noopener noreferrer">#1350</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>mithril-client verbosity not following usage menu</strong> <a href="https://github.com/input-output-hk/mithril/issues/1325" target="_blank" rel="noopener noreferrer">#1325</a></li><li>Completed the issue <strong>Error message for mithril-client snapshot download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1375" target="_blank" rel="noopener noreferrer">#1375</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-22T00:00:00.000Z" itemprop="datePublished">November 22, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team made progress in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, completing the first prototype implementation of the Mithril relay, which enables P2P signature broadcasting. They also made progress in optimizing the performance of the aggregator. Additionally, the team completed some enhancements on the CI/CD that will help manually deploy experimental Mithril networks for SanchoNet, as well as for the new P2P network layer.</p><p>Finally, they investigated occasional runtime issues causing delays for certain SPOs and started preparing for the next distribution release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1326" target="_blank" rel="noopener noreferrer">#1326</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li><li>Completed the issue <strong>Manually deploy a test Mithril network</strong> <a href="https://github.com/input-output-hk/mithril/issues/1356" target="_blank" rel="noopener noreferrer">#1356</a></li><li>Completed the issue <strong>Make Cardano node version custom in CI/CD</strong> <a href="https://github.com/input-output-hk/mithril/issues/1355" target="_blank" rel="noopener noreferrer">#1355</a></li><li>Worked on the issue <strong>Support P2P relay in infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1361" target="_blank" rel="noopener noreferrer">#1361</a></li><li>Completed the issue <strong>mithril-client fails to extract archive</strong> <a href="https://github.com/input-output-hk/mithril/issues/1352" target="_blank" rel="noopener noreferrer">#1352</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-15T00:00:00.000Z" itemprop="datePublished">November 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team completed the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof-of-concept, achieving the implementation of P2P signatures broadcast with the relay in the end-to-end tests. Additionally, the team completed the proof-of-concept for the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they continued addressing some performance issue associated with the &#x27;release-mainnet&#x27; aggregator, and fixed a bug with the tool used to process batch certificate hash re-computation.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Completed the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Fix certificate hashes re-computation in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1343" target="_blank" rel="noopener noreferrer">#1343</a></li><li>Completed the issue <strong>Remove <code>unstable</code> tag in <code>unstable</code> release</strong> <a href="https://github.com/input-output-hk/mithril/issues/1235" target="_blank" rel="noopener noreferrer">#1235</a></li><li>Worked on the issue <strong>Enhance aggregator REST API performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1327" target="_blank" rel="noopener noreferrer">#1327</a></li><li>Worked on the issue <strong>Signer runtime is stuck for some SPO</strong> <a href="https://github.com/input-output-hk/mithril/issues/1312" target="_blank" rel="noopener noreferrer">#1312</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-08-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-08T00:00:00.000Z" itemprop="datePublished">November 8, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team continued working on completing the adaptation of the Mithril client as a library. They progressed in decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, achieving the implementation of a very basic working demo with a peer-to-peer publish-subscribe (pub-sub) mechanism. Additionally, the team continued working on the deterministic computation of the UTXO/transactions set from the immutable files.</p><p>Finally, they resolved the naming issue of the Docker package responsible for storing images of the new Mithril client CLI, and continued addressing a performance issue associated with the &#x27;release-mainnet&#x27; aggregator.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Prototype a P2P relay with <code>libp2p</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Light Wallet: Compute deterministic Cardano UTxO/transactions set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client Docker package is incorrect</strong> <a href="https://github.com/input-output-hk/mithril/issues/1322" target="_blank" rel="noopener noreferrer">#1322</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/mithril/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-01T00:00:00.000Z" itemprop="datePublished">November 1, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept. They progressed with the adaptation of the Mithril client as a library, and worked on its full WASM compatibility in a proof of concept. The team kept working on the deterministic computation of the transactions from the immutable files, and fixed some unreachability issue on the <code>release-mainnet</code> aggregator.</p><p>Finally, they implemented new Docker images that build the Mithril nodes on the &#x27;devnet&#x27; faster and fixed some regressions in the Mithril client CLI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <!-- -->[#1272]<!-- -->(<a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/mithril/issues/1272</a></li><li>Worked on the issue <strong>Light Wallet: Release <code>mithril-client</code> library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1311" target="_blank" rel="noopener noreferrer">#1311</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Completed the issue <strong>Client regressions in snapshot list and download</strong> <a href="https://github.com/input-output-hk/mithril/issues/1321" target="_blank" rel="noopener noreferrer">#1321</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-25-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-25T00:00:00.000Z" itemprop="datePublished">October 25, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2342.0" target="_blank" rel="noopener noreferrer"><code>2342.0</code></a>. This release includes support for SPO tickers displayed in the Mithril explorer and the ability to produce slim Docker images for Mithril nodes.</p><p>They also kept working on decentralizing the Mithril networks with the peer-to-peer (P2P) networking proof of concept, progressed with the adaptation of the Mithril client as a library, and worked on the deterministic computation of the UTXO set from the immutable files. </p><p>Finally, they fixed the bottleneck of the key registration in the aggregator, investigated some unreachability on the <code>release-mainnet</code> aggregator, and enhanced the Mithril explorer UI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Completed the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano UTxO set PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Completed the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li><li>Worked on the issue <strong><code>release-mainnet</code> aggregator is unreachable</strong> <a href="https://github.com/input-output-hk/mithril/issues/1310" target="_blank" rel="noopener noreferrer">#1310</a></li><li>Worked on the issue <strong>Build <code>mithril-common</code> and <code>mithril-client</code> in WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1284" target="_blank" rel="noopener noreferrer">#1284</a></li><li>Completed the issue <strong>Display a summary of signers before the full list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1133" target="_blank" rel="noopener noreferrer">#1133</a></li><li>Completed the issue <strong>Add certificates list in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1184" target="_blank" rel="noopener noreferrer">#1184</a></li><li>Completed the issue <strong><code>CoreVerifier</code> setup does not compute <code>total_stake</code> correctly</strong> <a href="https://github.com/input-output-hk/mithril/issues/1306" target="_blank" rel="noopener noreferrer">#1306</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-18-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-18T00:00:00.000Z" itemprop="datePublished">October 18, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team started working on the decentralization of the Mithril networks with a proof of concept of peer-to-peer (P2P) networking between nodes. The team kept working on the adaptation of the Mithril client as a library, on the deterministic computation of the transaction history of an address from the immutable files, and on the refactoring that will fix the bottleneck of the key registration in the aggregator. Additionally, they published a security advisory for the Mithril relay.</p><p>Finally, they enhanced the CI/CD to publish multiple packages to <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a> and started improving the developer experience with the Mithril devnet.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Published the security advisory <strong>Mithril relay could expose Cardano block producer internal IP when updated</strong> <a href="https://github.com/input-output-hk/mithril/security/advisories/GHSA-9m3h-72xj-x2gq" target="_blank" rel="noopener noreferrer">#GHSA-9m3h-72xj-x2gq</a></li><li>Worked on the issue <strong>P2P Networking - Proof of Concept</strong> <a href="https://github.com/input-output-hk/mithril/issues/1300" target="_blank" rel="noopener noreferrer">#1300</a></li><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Publish multiple packages to <code>crates.io</code></strong> <a href="https://github.com/input-output-hk/mithril/issues/1298" target="_blank" rel="noopener noreferrer">#1298</a></li><li>Completed the issue <strong>Rename public key published in releases</strong> <a href="https://github.com/input-output-hk/mithril/issues/1292" target="_blank" rel="noopener noreferrer">#1292</a></li><li>Completed the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Fix <code>devnet</code> Mithril Docker images</strong> <a href="https://github.com/input-output-hk/mithril/issues/1272" target="_blank" rel="noopener noreferrer">#1272</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-11-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-11T00:00:00.000Z" itemprop="datePublished">October 11, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team worked on the distribution of the Mithril client as a library that will be distributed on <a href="https://crates.io/" target="_blank" rel="noopener noreferrer">crates.io</a>, the Rust dependencies repository. The team also worked on the deterministic computation of the transaction history of an address from the immutable files and started fixing a bottleneck in the aggregator that limits the ingestion of signatures.</p><p>Finally, they kept working on the activation of Cloudflare on the infrastructure and fixed some bugs in the Nix CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the issue <strong>Make <code>mithril-client</code> crate a library</strong> <a href="https://github.com/input-output-hk/mithril/issues/1141" target="_blank" rel="noopener noreferrer">#1141</a></li><li>Worked on the issue <strong>Compute deterministic Cardano transactions history PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1283" target="_blank" rel="noopener noreferrer">#1283</a></li><li>Worked on the issue <strong><code>ProtocolKeyRegistration</code> creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1187" target="_blank" rel="noopener noreferrer">#1187</a></li><li>Completed the issue <strong>Update <code>Rust</code> compiler in <code>nix</code> CI</strong> <a href="https://github.com/input-output-hk/mithril/issues/1282" target="_blank" rel="noopener noreferrer">#1282</a></li><li>Worked on the issue <strong>Mithril networks infrastructure maintenance</strong> <a href="https://github.com/input-output-hk/mithril/issues/1218" target="_blank" rel="noopener noreferrer">#1218</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-04T00:00:00.000Z" itemprop="datePublished">October 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team updated a proposal for implementing Mithril in a light wallet and created a discussion <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">on implementing Mithril in a light wallet</a> to receive feedback and contributions from the community.</p><p>They also completed a proof of concept to run a Mithril client in a browser with WASM and worked on enhancing the explorer UI with SPO tickers displayed next to the pool IDs. Additionally, the team finalized a tool for benchmarking aggregator performance over a range of signer and client loads and for visualizing the results of these benchmarks.</p><p>Finally, the team added a root page to the aggregator endpoint, created a status page for the Mithril networks, and added a section about KES key rotation in the signer documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the discussion <strong>Implement Mithril in a light wallet</strong> <a href="https://github.com/input-output-hk/mithril/discussions/1273" target="_blank" rel="noopener noreferrer">#1273</a></li><li>Completed the issue <strong>Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Completed the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Add SPO tickers in explorer</strong> <a href="https://github.com/input-output-hk/mithril/issues/1185" target="_blank" rel="noopener noreferrer">#1185</a></li><li>Completed the issue <strong>Add a non <code>404</code> status code on the aggregator endpoint</strong> <a href="https://github.com/input-output-hk/mithril/issues/1103" target="_blank" rel="noopener noreferrer">#1103</a></li><li>Completed the issue <strong>Use source attribute in errors</strong> <a href="https://github.com/input-output-hk/mithril/issues/1265" target="_blank" rel="noopener noreferrer">#1265</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Completed the issue <strong>Configure status page and alerting</strong> <a href="https://github.com/input-output-hk/mithril/issues/1277" target="_blank" rel="noopener noreferrer">#1277</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1274" target="_blank" rel="noopener noreferrer">#1274</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/mithril"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/mithril/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-27-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2337.0" target="_blank" rel="noopener noreferrer"><code>2337.0</code></a>, which includes the following enhancements: support for <code>zstandard</code> compression of snapshot archives, support for the Cardano node version in snapshot metadata, and support for recording snapshot download statistics in the aggregator.</p><p>They also completed the refactoring and standardization of the errors in the Mithril nodes and published an <a href="https://mithril.network/doc/adr/6" target="_blank" rel="noopener noreferrer">Architectural decision record</a> on the documentation website. Additionally, they kept working on adding Cloudflare protection to the infrastructure.</p><p>Finally, the team fixed a performance issue on the stress test tool for the aggregator and made some improvements to the documentation for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Errors refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Completed the issue <strong>Client traffic creates performance bottleneck in aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1207" target="_blank" rel="noopener noreferrer">#1207</a></li><li>Completed the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Completed the issue <strong>Create a SPO checklist for KES keys update</strong> <a href="https://github.com/input-output-hk/mithril/issues/1267" target="_blank" rel="noopener noreferrer">#1267</a></li><li>Worked on the issue <strong>Spike: Run client in browser WASM PoC</strong> <a href="https://github.com/input-output-hk/mithril/issues/1254" target="_blank" rel="noopener noreferrer">#1254</a></li><li>Worked on the issue <strong>Benchmark aggregator performances</strong> <a href="https://github.com/input-output-hk/mithril/issues/1220" target="_blank" rel="noopener noreferrer">#1220</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-20-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-20T00:00:00.000Z" itemprop="datePublished">September 20, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>This week, the Mithril team has completed the refactoring of the terraform deployment workflows in GitHub actions, and the implementation of snapshot compression parameters in the deployments. They kept working on the refactoring and standardization of the errors in the Mithril nodes. The team also completed the implementation of Cloudflare protection for the aggregator infrastructure and started working on its deployment and activation in the Mithril networks. Additionally, they worked on recording download statistics on the aggregator which will be used to produce usage reports. </p><p>Finally, they kept working on the aggregator performance bottleneck that occurs with high client traffic and started creating a new distribution.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <strong>Add snapshot compression parameters in infrastructure deployments</strong> <a href="https://github.com/input-output-hk/mithril/issues/1200" target="_blank" rel="noopener noreferrer">#1200</a></li><li>Completed the issue <strong>Add Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Worked on the issue <strong>Record statistics about the downloaded snapshot in the aggregator</strong> <a href="https://github.com/input-output-hk/mithril/issues/1127" target="_blank" rel="noopener noreferrer">#1127</a></li><li>Worked on the issue <strong>Error refactoring</strong> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <strong>Activate Cloudflare protection of infrastructure</strong> <a href="https://github.com/input-output-hk/mithril/issues/1230" target="_blank" rel="noopener noreferrer">#1230</a></li><li>Worked on the issue <strong>Release new <code>2337</code> distribution</strong> <a href="https://github.com/input-output-hk/mithril/issues/1219" target="_blank" rel="noopener noreferrer">#1219</a></li><li>Completed the issue <strong>Upgrade dependencies</strong> <a href="https://github.com/input-output-hk/mithril/issues/1238" target="_blank" rel="noopener noreferrer">#1238</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-07-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2335.0" target="_blank" rel="noopener noreferrer"><code>2335.0</code></a> which brings enhancements to the client: support for simultaneous downloading and unpacking of the snapshot archives, support for one line command restoration of the latest snapshot, and availability of machine readable progress information.</p><p>They have also worked on snapshots enhancements: implementation of the <code>zstandard</code> compression to produce smaller archives, and providing the version of the Cardano node used to create the archive in the snapshot artifacts. They have completed the second phase of the implementation of the stress test tool to benchamrk the aggregator. Additionally, they have kept working on refactoring and standardizing errors in the Mithril nodes.</p><p>Finally, they have worked on adding Cloudflare protection to the infrastructure, and they have fixed some bugs that occurred during restoration of a snapshot by a client.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Completed the issue <code>Design &amp; implement stress test tool for aggregator - phase 2</code> <a href="https://github.com/input-output-hk/mithril/issues/1155" target="_blank" rel="noopener noreferrer">#1155</a></li><li>Completed the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Completed the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li><li>Completed the issue <code>Add aggregator Cardano node version in snapshot artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/948" target="_blank" rel="noopener noreferrer">#948</a></li><li>Completed the issue <code>Make Cardano node version part of the Mithril network configuration</code> <a href="https://github.com/input-output-hk/mithril/issues/947" target="_blank" rel="noopener noreferrer">#947</a></li><li>Completed the issue <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a></li><li>Worked on the issue <code>Errors refactoring</code> <a href="https://github.com/input-output-hk/mithril/issues/798" target="_blank" rel="noopener noreferrer">#798</a></li><li>Worked on the issue <code>Add Cloudflare protection of infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/986" target="_blank" rel="noopener noreferrer">#986</a></li><li>Completed the issue <code>Failed to restore recent snapshot with strange error</code> <a href="https://github.com/input-output-hk/mithril/issues/1160" target="_blank" rel="noopener noreferrer">#1160</a></li><li>Completed the issue <code>Update &#x27;ed25519-dalek&#x27; to &#x27;2.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1188" target="_blank" rel="noopener noreferrer">#1188</a></li><li>Completed the issue <code>Add target networks blocks in release notes</code> <a href="https://github.com/input-output-hk/mithril/issues/1151" target="_blank" rel="noopener noreferrer">#1151</a></li><li>Completed the issue <code>Fix end to end &#x27;wait_for_the_expected_time&#x27; test</code> <a href="https://github.com/input-output-hk/mithril/issues/1191" target="_blank" rel="noopener noreferrer">#1191</a></li><li>Completed the issue <code>Fix docs &#x27;git checkout&#x27; command</code> <a href="https://github.com/input-output-hk/mithril/issues/1174" target="_blank" rel="noopener noreferrer">#1174</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-28-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-28T00:00:00.000Z" itemprop="datePublished">August 28, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created an explorer page with the registered signers to give recognition to the SPOs already running on mainnet. They also worked on refactoring and standardizing errors in the Mithril nodes, and they enhanced the clarity and reduced verbosity of the logs for the signer and aggregator nodes. Additionally, they started working on the implementation of <code>zstandard</code> compression of the snapshot archive, and streaming its download and decompression in the client.</p><p>Finally, they implemented machine readable progress information in the client, and streamlined the process of verifying the registration status of a signer. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li><li>Completed the issue <code>Simplify logs on the Signer/Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1106" target="_blank" rel="noopener noreferrer">#1106</a></li><li>Completed the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li><li>Completed the issue <code>Mithril client last snapshot download</code> <a href="https://github.com/input-output-hk/mithril/issues/1078" target="_blank" rel="noopener noreferrer">#1078</a></li><li>Completed the issue <code>Use the &#x27;/signers/registered&#x27; route to verify if a signer is registered</code> <a href="https://github.com/input-output-hk/mithril/issues/1152" target="_blank" rel="noopener noreferrer">#1152</a></li><li>Worked on the issue <code>Provide progress information with &#x27;--json&#x27; option in Client</code> <a href="https://github.com/input-output-hk/mithril/issues/1095" target="_blank" rel="noopener noreferrer">#1095</a></li><li>Worked on the issue <code>Use &#x27;zstandard&#x27; compression for snapshot archives</code> <a href="https://github.com/input-output-hk/mithril/issues/876" target="_blank" rel="noopener noreferrer">#876</a></li><li>Worked on the issue <code>Make client download and extract the archive simultaneously</code> <a href="https://github.com/input-output-hk/mithril/issues/1115" target="_blank" rel="noopener noreferrer">#1115</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-10-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-10T00:00:00.000Z" itemprop="datePublished">August 10, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the <strong>Mithril protocol’s mainnet beta</strong> launch: the <code>release-mainnet</code> network is now consistently producing new certificates and snapshots! The team has released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a> which includes some optimizations and bug fixes: the bootstrap time of a Cardano node restored from a Mithril snapshot has been significantly reduced, and a bug that made the aggregator produce corrupted archives has been fixed. They also kept working on the implementation of the stress test tool for benchmarking the aggregator: the first phase has been implemented, as well as a monitoring feature. Additionally, they kept implementing the refactoring of the serialization/deserialization of the entities of the cryptographic library, and working on the post deployment of the <code>mainnet</code> infrastructure.</p><p>Finally, they completed the rewriting and enhancements of the documentation website, and they completed the runbook for operating a production Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2331.1" target="_blank" rel="noopener noreferrer"><code>2331.1</code></a></li><li>Completed the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Completed the issue <code>Design &amp; implement basic stress test tool for aggregator - phase 1</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on the epic <code>Post deployment &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/1091" target="_blank" rel="noopener noreferrer">#1091</a>:<ul><li>Completed the issue <code>Create Production Infrastructure Runbook</code> <a href="https://github.com/input-output-hk/mithril/issues/1085" target="_blank" rel="noopener noreferrer">#1085</a></li><li>Completed the issue <code>Ingest &#x27;mainnet&#x27; metrics/logs in Grafana</code> <a href="https://github.com/input-output-hk/mithril/issues/1122" target="_blank" rel="noopener noreferrer">#1122</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Add a &#x27;clean&#x27; file to extracted database in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1131" target="_blank" rel="noopener noreferrer">#1131</a></li><li>Worked on the issue <code>Create explorer page with registered signers</code> <a href="https://github.com/input-output-hk/mithril/issues/1097" target="_blank" rel="noopener noreferrer">#1097</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Client fails to unpack some snapshot archive</code> <a href="https://github.com/input-output-hk/mithril/issues/1137" target="_blank" rel="noopener noreferrer">#1137</a></li><li>Completed the issue <code>The &#x27;release-preprod&#x27; network stopped producing certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1114" target="_blank" rel="noopener noreferrer">#1114</a></li><li>Completed the issue <code>The &#x27;release-mainnet&#x27; network does not show up in the explorer</code> <a href="https://github.com/input-output-hk/mithril/issues/1111" target="_blank" rel="noopener noreferrer">#1111</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.2&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1090" target="_blank" rel="noopener noreferrer">#1090</a></li></ul></li><li>Worked on troubleshooting:<ul><li>Completed the issue <code>Signer can&#x27;t sign with &#x27;Invalid signature for party&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/1125" target="_blank" rel="noopener noreferrer">#1125</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/mithril/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/mithril/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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The team is monitoring the network, and expects it to start producing certificates during the next Cardano epoch. </p><p>They have released a new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a>, which is running on the <code>release-mainnet</code> network. They also kept working on the implementation of the stress test tool for benchmarking the aggregator. The team kept working on the refactoring of the serialization/deserialization of the entities of the cryptographic library. Additionally, they completed the cleanup of the legacy store adapters in the aggregator.</p><p>Finally, they have worked on enhancing the documentation for <a href="https://mithril.network/doc/manual/getting-started/SPO-on-boarding-guide" target="_blank" rel="noopener noreferrer">onboarding SPOs</a> and setting up a <a href="https://mithril.network/doc/manual/getting-started/run-signer-node" target="_blank" rel="noopener noreferrer">Mithril signer</a>, and fixing installation bugs of the binary artifacts produced in the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Created the dev blog post <a href="https://mithril.network/doc/dev-blog/2023/07/21/mainnet-beta-launch" target="_blank" rel="noopener noreferrer">Mithril Protocol’s Mainnet Beta Launch</a></li><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2329.0" target="_blank" rel="noopener noreferrer"><code>2329.0</code></a></li><li>Closed the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Completed the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Release &#x27;mainnet&#x27; Mithril network</code> <a href="https://github.com/input-output-hk/mithril/issues/918" target="_blank" rel="noopener noreferrer">#918</a><ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Enhance the configuration of Mithril relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1080" target="_blank" rel="noopener noreferrer">#1080</a></li><li>Completed the issue <code>Remove legacy store adapters from aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1053" target="_blank" rel="noopener noreferrer">#1053</a></li><li>Completed the issue <code>Add a &#x27;sign&#x27; sub-command to &#x27;genesis&#x27; command in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1081" target="_blank" rel="noopener noreferrer">#1081</a></li></ul></li><li>Worked on refactoring:<ul><li>Worked on the issue <code>Refactor (de)serialization of crypto entities</code> <a href="https://github.com/input-output-hk/mithril/issues/668" target="_blank" rel="noopener noreferrer">#668</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Enhance &#x27;Run a Mithril Signer node (SPO)&#x27; guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1055" target="_blank" rel="noopener noreferrer">#1055</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Shared library error in CI binaries</code> <a href="https://github.com/input-output-hk/mithril/issues/1073" target="_blank" rel="noopener noreferrer">#1073</a></li><li>Completed the issue <code>Debian package does not install cleanly on older ubuntu versions</code> <a href="https://github.com/input-output-hk/mithril/issues/834" target="_blank" rel="noopener noreferrer">#834</a></li><li>Completed the issue <code>Aggregator panics with new (de)serialization of &#x27;ProtocolVerificationKey&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/1083" target="_blank" rel="noopener noreferrer">#1083</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-13-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-13T00:00:00.000Z" itemprop="datePublished">July 13, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team created a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a> distribution. They focused on preparing the beta launch on the <code>mainnet</code>: they tested the new production signer deployment model with the pioneer SPOs, they prepared an SPO on-boarding guide, and they kept working on the deployment and monitoring of the <code>mainnet</code> infrastructure. The team also worked on the implementation of a simple stress test tool for benchmarking the aggregator. Additionally, they completed the refactoring of the interface to the cryptographic library. </p><p>Finally, they fixed a bug that sporadically prevented the latest signer registration of a SPO to be used in the associated signing epoch, they fixed a bug in the epoch gap detection of the certificate chain in the aggregator, and worked on multiple other optimizations and bugs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2327.0" target="_blank" rel="noopener noreferrer"><code>2327.0</code></a></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li><li>Worked on the issue <code>Deploy &#x27;mainnet&#x27; infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/988" target="_blank" rel="noopener noreferrer">#988</a></li><li>Worked on the issue <code>Handle Secrets management</code> <a href="https://github.com/input-output-hk/mithril/issues/989" target="_blank" rel="noopener noreferrer">#989</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Remove certificate hash from Artifact</code> <a href="https://github.com/input-output-hk/mithril/issues/932" target="_blank" rel="noopener noreferrer">#932</a></li><li>Completed the issue <code>Check vulnerabilities in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1037" target="_blank" rel="noopener noreferrer">#1037</a></li><li>Completed the issue <code>Add &#x27;created_at&#x27; in Mithril Stake Distribution messages</code> <a href="https://github.com/input-output-hk/mithril/issues/1030" target="_blank" rel="noopener noreferrer">#1030</a></li><li>Completed the issue <code>Add a &#x27;run-only&#x27; option in end to end test</code> <a href="https://github.com/input-output-hk/mithril/issues/1048" target="_blank" rel="noopener noreferrer">#1048</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li><li>Completed the issue <code>Refactor aggregator dependency injection and services</code> <a href="https://github.com/input-output-hk/mithril/issues/1058" target="_blank" rel="noopener noreferrer">#1058</a></li><li>Completed the issue <code>Build static binaries in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/874" target="_blank" rel="noopener noreferrer">#874</a></li></ul></li><li>Worked on documentation:<ul><li>Completed the issue <code>Prepare SPO on-boarding guide</code> <a href="https://github.com/input-output-hk/mithril/issues/1049" target="_blank" rel="noopener noreferrer">#1049</a></li><li>Completed the issue <code>Add instructions to set firewall using iptables</code> <a href="https://github.com/input-output-hk/mithril/issues/1040" target="_blank" rel="noopener noreferrer">#1040</a></li><li>Completed the issue <code>Update ufw command to set firewall on Mithril Signer installation instructions</code> <a href="https://github.com/input-output-hk/mithril/issues/1041" target="_blank" rel="noopener noreferrer">#1041</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not detect certificate chain epoch gap</code> <a href="https://github.com/input-output-hk/mithril/issues/952" target="_blank" rel="noopener noreferrer">#952</a></li><li>Completed the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li><li>Completed the issue <code>SQLite compatibility in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/837" target="_blank" rel="noopener noreferrer">#837</a></li><li>Completed the issue <code>Q&amp;A followup fixes</code> <a href="https://github.com/input-output-hk/mithril/issues/1035" target="_blank" rel="noopener noreferrer">#1035</a></li><li>Completed the issue <code>E2E tests are flaky in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/1023" target="_blank" rel="noopener noreferrer">#1023</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-29-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-29T00:00:00.000Z" itemprop="datePublished">June 29, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the design of the signer deployment model for the SPOs to run Mithril on their Cardano <code>mainnet</code> infrastructure, and implemented the associated Mithril Relay in the Mithril networks. They started working on the design and implementation of a stress test tool for benchmarking the aggregator performances. They worked on the refactoring of the Mithril Stake Distribution entity and the uniformization of the date types in the nodes. They also worked on implementing a new tool command in the aggregator and its first sub-command that helps avoiding re-genesis of the certificate chain when the structure of the certificate is updated. Additionally, they worked on implementing some monitoring for the Mithril infrastructure, and worked on a retry mechanism for the artifact creation of the aggregator.</p><p>Finally, they fixed some bugs, and they completed the upgrade of the Mithril networks to Cardano node v.8.1.1.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Add infrastructure monitoring</code> <a href="https://github.com/input-output-hk/mithril/issues/987" target="_blank" rel="noopener noreferrer">#987</a></li></ul></li><li>Completed the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Completed the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li><li>Completed the issue <code>Adapt infrastructure to use Mithril Relay</code> <a href="https://github.com/input-output-hk/mithril/issues/1018" target="_blank" rel="noopener noreferrer">#1018</a></li><li>Completed the issue <code>Announce the new signer deployment model in a dev blog post</code> <a href="https://github.com/input-output-hk/mithril/issues/1017" target="_blank" rel="noopener noreferrer">#1017</a></li></ul></li><li>Worked on the epic <code>Benchmark performances of Mithril Aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/904" target="_blank" rel="noopener noreferrer">#904</a>:<ul><li>Worked on the issue <code>Design &amp; implement basic stress test tool for aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/991" target="_blank" rel="noopener noreferrer">#991</a></li></ul></li><li>Worked on bugs:<ul><li>Completed the issue <code>Aggregator does not exit on critical error</code> <a href="https://github.com/input-output-hk/mithril/issues/993" target="_blank" rel="noopener noreferrer">#993</a></li><li>Completed the issue <code>Computation of master certificate of an epoch is incorrect</code> <a href="https://github.com/input-output-hk/mithril/issues/1006" target="_blank" rel="noopener noreferrer">#1006</a></li><li>Completed the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>&#x27;testing-preview&#x27; network does not create certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/1015" target="_blank" rel="noopener noreferrer">#1015</a></li></ul></li><li>Worked on optimizations:<ul><li>Completed the issue <code>Dates format is not standardized</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Completed the issue <code>Add &#x27;recompute-certificates-hash&#x27; command to aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/1001" target="_blank" rel="noopener noreferrer">#1001</a></li><li>Completed the issue <code>Add a retry mechanism for artifact creation in aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/984" target="_blank" rel="noopener noreferrer">#984</a></li><li>Completed the issue <code>Log node version at startup in Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/944" target="_blank" rel="noopener noreferrer">#944</a></li><li>Completed the issue <code>Reactivate Publish Results job in CI</code> <a href="https://github.com/input-output-hk/mithril/issues/978" target="_blank" rel="noopener noreferrer">#978</a></li><li>Completed the issue <code>Clean &#x27;pending_snapshot&#x27; directory of aggregator</code> <a href="https://github.com/input-output-hk/mithril/issues/983" target="_blank" rel="noopener noreferrer">#983</a></li><li>Completed the issue <code>Update OpenAPI spec examples</code> <a href="https://github.com/input-output-hk/mithril/issues/1000" target="_blank" rel="noopener noreferrer">#1000</a></li></ul></li><li>Worked on refactoring:<ul><li>Completed the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/982" target="_blank" rel="noopener noreferrer">#982</a></li><li>Completed the issue <code>Refactor download code in client</code> <a href="https://github.com/input-output-hk/mithril/issues/1010" target="_blank" rel="noopener noreferrer">#1010</a></li><li>Worked on the issue <code>Factorize protocol crypto operations</code> <a href="https://github.com/input-output-hk/mithril/issues/669" target="_blank" rel="noopener noreferrer">#669</a></li></ul></li><li>Worked on dependencies:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.1.1&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/973" target="_blank" rel="noopener noreferrer">#973</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-15T00:00:00.000Z" itemprop="datePublished">June 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new sub-command for restoring a Mithril stake distribution in the client. They also updated the client’s developer documentation and architecture documentation, and did some refactoring on the client and its dependency injection mechanism. Additionally, they completed and deployed infrastructure enhancements on the test Mithril networks. They also completed the performance tests of the new stake distribution computation on the Cardano mainnet.</p><p>Finally, the team worked on fixing a bug on the client multi-platform test, a bug on the aggregator state machine, and some flakiness on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Create the sub-command for &#x27;Mithril Stake Distribution&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/896" target="_blank" rel="noopener noreferrer">#896</a></li><li>Completed the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Completed the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Completed the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li><li>Completed the issue <code>Refactoring client</code> <a href="https://github.com/input-output-hk/mithril/issues/960" target="_blank" rel="noopener noreferrer">#960</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Completed the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Completed the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Check performance impact of new stake distribution command on the &#x27;mainnet&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/962" target="_blank" rel="noopener noreferrer">#962</a></li></ul></li><li>Worked on the epic <code>Prepare Mithril Signer deployment model for SPO</code> <a href="https://github.com/input-output-hk/mithril/issues/862" target="_blank" rel="noopener noreferrer">#862</a>:<ul><li>Worked on the issue <code>Design recommended deployment model for SPOs on &#x27;mainnet&#x27; and  &#x27;preview&#x27;/&#x27;preprod&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/961" target="_blank" rel="noopener noreferrer">#961</a></li></ul></li><li>Worked on bugs and optimizations:<ul><li>Completed the issue <code>Aggregator does not always detect new immutable file</code> <a href="https://github.com/input-output-hk/mithril/issues/953" target="_blank" rel="noopener noreferrer">#953</a></li><li>Completed the issue <code>CI tests fail with Rust &#x27;1.70.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/958" target="_blank" rel="noopener noreferrer">#958</a></li><li>Worked on the issue <code>End to end tests are flaky</code> <a href="https://github.com/input-output-hk/mithril/issues/954" target="_blank" rel="noopener noreferrer">#954</a></li><li>Worked on the issue <code>Certificate dates in metadata are not on the same timezone</code> <a href="https://github.com/input-output-hk/mithril/issues/946" target="_blank" rel="noopener noreferrer">#946</a></li><li>Worked on the issue <code>Refactor &#x27;MithrilStakeDistribution&#x27; entity</code> <a href="https://github.com/input-output-hk/mithril/issues/967" target="_blank" rel="noopener noreferrer">#967</a></li><li>Completed the issue <code>Fix &#x27;Mithril Client multi-platform test&#x27; with new client interface</code> <a href="https://github.com/input-output-hk/mithril/issues/956" target="_blank" rel="noopener noreferrer">#956</a></li><li>Completed the issue <code>Enhance &#x27;ImmutableDigesterError::NotEnoughImmutable&#x27; error</code> <a href="https://github.com/input-output-hk/mithril/issues/969" target="_blank" rel="noopener noreferrer">#969</a></li><li>Completed the issue <code>Client &#x27;snapshot download&#x27; command fails with option &#x27;--download-dir&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/979" target="_blank" rel="noopener noreferrer">#979</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-01T00:00:00.000Z" itemprop="datePublished">June 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a> distribution that fully implements the mechanism developed to sign generic data. They completed the upgrade of the Cardano node in the Mithril networks to v.8.0.0 and the implementation of the new computation of the stake distribution. They refactored the state machines of the signer and aggregator, and the signed entity service of the aggregator. Additionally, they worked on adapting the client and implementing a new sub-command for restoring the Cardano immutable file snapshots.</p><p>Finally, the team worked on adding a new certificate list route in the aggregator REST API, and started enhancing the infrastructure of the Mithril networks.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2321.1" target="_blank" rel="noopener noreferrer"><code>2321.1</code></a></li><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the issue <code>Enhance MessageAdapter for Artifact in aggregator REST API</code> <a href="https://github.com/input-output-hk/mithril/issues/925" target="_blank" rel="noopener noreferrer">#925</a></li><li>Completed the issue <code>Create the sub-command for &#x27;Cardano Immutable Files Full&#x27; in client</code> <a href="https://github.com/input-output-hk/mithril/issues/895" target="_blank" rel="noopener noreferrer">#895</a></li><li>Completed the issue <code>Enhance state machines Aggregator/Signer</code> <a href="https://github.com/input-output-hk/mithril/issues/933" target="_blank" rel="noopener noreferrer">#933</a></li><li>Completed the issue <code>Adapt the aggregator REST API to list certificates</code> <a href="https://github.com/input-output-hk/mithril/issues/892" target="_blank" rel="noopener noreferrer">#892</a></li><li>Worked on the issue <code>Adapt end to end tests to handle new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/899" target="_blank" rel="noopener noreferrer">#899</a></li><li>Worked on the issue <code>Update client documentation</code> <a href="https://github.com/input-output-hk/mithril/issues/897" target="_blank" rel="noopener noreferrer">#897</a></li><li>Worked on the issue <code>Update architecture documentations for new types of data</code> <a href="https://github.com/input-output-hk/mithril/issues/898" target="_blank" rel="noopener noreferrer">#898</a></li></ul></li><li>Worked on the epic that prepares the Mithril infrastructure for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/767" target="_blank" rel="noopener noreferrer">#767</a>:<ul><li>Worked on the issue <code>Enhance terraform infrastructure</code> <a href="https://github.com/input-output-hk/mithril/issues/930" target="_blank" rel="noopener noreferrer">#930</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the issue <code>Upgrade Cardano node to &#x27;8.0.0&#x27;</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li><li>Completed the issue <code>Add export path in Client CLI</code> <a href="https://github.com/input-output-hk/mithril/issues/512" target="_blank" rel="noopener noreferrer">#512</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/mithril/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/mithril/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2318.0" target="_blank" rel="noopener noreferrer"><code>2318.0</code></a> distribution that implements the last migration phase of the aggregator stores and embeds a bug fix for the signer registration. They also completed the implementation of the interfaces defined to provide certification for the immutable full snapshot of Cardano files and Mithril stake distribution. They finalized the implementation of the framework to sign generic types of data in the aggregator and the signer nodes. They also updated the runtime of the aggregator to handle open messages associated with the available types, and evolved the REST API of the aggregator to deliver the artifacts for these types. Additionally, they have upgraded the network explorer in order to display the artifacts and certificates for these different types.</p><p>Finally, the team started designing an on-chain decentralized signer registration process, and started implementing the new stake distribution computation available from Cardano node <code>8.0.0</code> (along with the backward compatibility for previous <code>1.35.x</code> versions).</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the handling of multiple types of signed entity in the aggregator runtime <a href="https://github.com/input-output-hk/mithril/issues/907" target="_blank" rel="noopener noreferrer">#907</a></li><li>Completed the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the adaptation of the aggregator runtime to use the artifact builder service <a href="https://github.com/input-output-hk/mithril/issues/869" target="_blank" rel="noopener noreferrer">#869</a></li><li>Completed the appending of the next AVK to all protocol messages <a href="https://github.com/input-output-hk/mithril/issues/888" target="_blank" rel="noopener noreferrer">#888</a></li><li>Completed the adaptation of the aggregator REST API to retrieve the list/details of the artifacts produced <a href="https://github.com/input-output-hk/mithril/issues/893" target="_blank" rel="noopener noreferrer">#893</a></li><li>Completed the adaptation of the explorer to handle new artifact routes of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/927" target="_blank" rel="noopener noreferrer">#927</a></li></ul></li><li>Worked on the epic that implements the computation of the stake distribution for <code>mainnet</code> <a href="https://github.com/input-output-hk/mithril/issues/880" target="_blank" rel="noopener noreferrer">#880</a>:<ul><li>Completed the implementation of the new stake distribution computation in the chain observer <a href="https://github.com/input-output-hk/mithril/issues/919" target="_blank" rel="noopener noreferrer">#919</a></li><li>Worked on upgrading the Cardano node to <code>8.0.0</code> <a href="https://github.com/input-output-hk/mithril/issues/920" target="_blank" rel="noopener noreferrer">#920</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-04T00:00:00.000Z" itemprop="datePublished">May 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team completed the implementation of the new certifier service of the aggregator, which is in charge of producing certificates for multi-signatures. They also finished implementing the interfaces defined to provide certification for the full immutable Cardano files snapshot and the Mithril stake distribution. Additionally, they have completed the refactoring of the multi-signer in the aggregator. The team also fixed the bug in the signer registration that was responsible for gaps during the signature phase for some signers, and they upgraded the Cardano node used in the Mithril testnets and devnet to version <code>1.35.7</code>.</p><p>Finally, they have worked on designing a decentralized registration for the signers that takes place on the Cardano chain.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that designs and implements generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the implementation of the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li><li>Completed the implementation of the artifact builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/870" target="_blank" rel="noopener noreferrer">#870</a></li><li>Completed the implementation of the signable builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/852" target="_blank" rel="noopener noreferrer">#852</a></li><li>Completed the implementation of the artifact builder for the <code>Full Immutables Snapshot</code> <a href="https://github.com/input-output-hk/mithril/issues/871" target="_blank" rel="noopener noreferrer">#871</a></li><li>Completed the adaptation of the aggregator runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/853" target="_blank" rel="noopener noreferrer">#853</a></li><li>Worked on the adaptation of the signer runtime to use the signable builder service <a href="https://github.com/input-output-hk/mithril/issues/854" target="_blank" rel="noopener noreferrer">#854</a></li><li>Completed the definition of the entity service interface for verification/restoration <a href="https://github.com/input-output-hk/mithril/issues/868" target="_blank" rel="noopener noreferrer">#868</a></li><li>Completed the refactoring of the <code>OpenMessage</code> type <a href="https://github.com/input-output-hk/mithril/issues/878" target="_blank" rel="noopener noreferrer">#878</a></li></ul></li><li>Completed the epic that simplifies the multi-signer in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a>:<ul><li>Completed the extraction of the single signature registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/643" target="_blank" rel="noopener noreferrer">#643</a></li></ul></li><li>Completed the upgrade of the Cardano node to version <code>1.35.7</code> <a href="https://github.com/input-output-hk/mithril/issues/881" target="_blank" rel="noopener noreferrer">#881</a></li><li>Fixed the bug that created a discrepancy of the signer verification keys between signers and aggregators <a href="https://github.com/input-output-hk/mithril/issues/873" target="_blank" rel="noopener noreferrer">#873</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-20-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-20T00:00:00.000Z" itemprop="datePublished">April 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a> distribution that implements the first part of the migration of the aggregator stores along with minor improvements and bug fixes. They finished the migration of the aggregator stores to a relational design by completing the adaptation and migration of the signed entity, signer and single signature stores. They also created a new tick service that provides beacons to other services of the aggregator. Additionally, they started implementing the new new certifier service of the aggregator that is in charge of producing certificates for multi-signatures.</p><p>Finally, they completed the design and definition of the interfaces that must be implemented to provide certification for a new type of data in a Mithril network.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2315.0" target="_blank" rel="noopener noreferrer"><code>2315.0</code></a></li><li>Completed the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>signed_entity</code> table <a href="https://github.com/input-output-hk/mithril/issues/816" target="_blank" rel="noopener noreferrer">#816</a></li><li>Completed the creation of the <code>signer</code> table <a href="https://github.com/input-output-hk/mithril/issues/814" target="_blank" rel="noopener noreferrer">#814</a></li><li>Completed the migration/adaptation of the <code>single_signature</code> table <a href="https://github.com/input-output-hk/mithril/issues/829" target="_blank" rel="noopener noreferrer">#829</a></li></ul></li><li>Worked on the epic that designs and implement generic signing/verification of entity services <a href="https://github.com/input-output-hk/mithril/issues/780" target="_blank" rel="noopener noreferrer">#780</a>:<ul><li>Completed the definition of the interface of the generic entity service for signing <a href="https://github.com/input-output-hk/mithril/issues/847" target="_blank" rel="noopener noreferrer">#847</a></li><li>Worked on the implementation of the <code>Certifier</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/850" target="_blank" rel="noopener noreferrer">#850</a></li><li>Completed the extension of the <code>SignedEntityType</code> type <a href="https://github.com/input-output-hk/mithril/issues/848" target="_blank" rel="noopener noreferrer">#848</a></li><li>Completed the implementation of the <code>Tick</code> service in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/849" target="_blank" rel="noopener noreferrer">#849</a></li><li>Worked on implementing the signable builder for the <code>Mithril Stake Distribution</code> <a href="https://github.com/input-output-hk/mithril/issues/851" target="_blank" rel="noopener noreferrer">#851</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-06-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-06T00:00:00.000Z" itemprop="datePublished">April 6, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a> distribution that implements minor improvements and bug fixes. They continued implementing the migration of the aggregator stores to a relational design. They finished adaptating and migrating the certificate, epoch settings, signed entity type, signer registration and open message stores. Additionally, they completed the refactoring of the dependency injector of the aggregator and simplified its multi-signer in order for it to sign multiple concurrent messages.</p><p>Finally, the team has worked on designing the new architecture of the network to support signing multiple types of data and upgraded the version of the Cardano node used in the Mithril testnets and devnet to <code>1.35.6</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2313.0" target="_blank" rel="noopener noreferrer"><code>2313.0</code></a></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Completed the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the migration/adaptation of the <code>certificate</code> table <a href="https://github.com/input-output-hk/mithril/issues/817" target="_blank" rel="noopener noreferrer">#817</a></li><li>Completed the migration/adaptation of the <code>open_message</code> table <a href="https://github.com/input-output-hk/mithril/issues/827" target="_blank" rel="noopener noreferrer">#827</a></li><li>Completed the migration/adaptation of the <code>signer_registration</code> table <a href="https://github.com/input-output-hk/mithril/issues/828" target="_blank" rel="noopener noreferrer">#828</a></li></ul></li><li>Completed the refactoring of the dependency injection of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/823" target="_blank" rel="noopener noreferrer">#823</a></li><li>Completed the cleanup of the multi-signer of the aggregator <a href="https://github.com/input-output-hk/mithril/issues/824" target="_blank" rel="noopener noreferrer">#824</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.6</code> <a href="https://github.com/input-output-hk/mithril/issues/843" target="_blank" rel="noopener noreferrer">#843</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-23-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-23T00:00:00.000Z" itemprop="datePublished">March 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2310.0" target="_blank" rel="noopener noreferrer"><code>2310.0</code></a> distribution that activates the era switch mechanism. They also kept implementing the migration of the aggregator stores to a relational design with the first adaptation of the stake pool store, and then the adaptation of the epoch settings &amp; signed entity type stores. They have implemented the handling of the network API version from the Open API specifications and its automatic switch at era transition. Additionally, they optimized the stake distribution computation that now happens only once per epoch, and also enhanced the client multi-platform workflow to test the Docker images.</p><p>Finally, they have successfully completed the tests to create certificates and snapshots on a network running on the Cardano <code>mainnet</code> and they have fixed some bugs. </p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Completed the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed handling the API version switch at era transition <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Completed on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li><li>Worked on the migration/adaptation of the <code>epoch_settings</code> table <a href="https://github.com/input-output-hk/mithril/issues/813" target="_blank" rel="noopener noreferrer">#813</a></li><li>Worked on the migration/adaptation of the <code>signed-entity-type</code> table <a href="https://github.com/input-output-hk/mithril/issues/815" target="_blank" rel="noopener noreferrer">#815</a></li><li>Completed the creation of a stake distribution service <a href="https://github.com/input-output-hk/mithril/issues/799" target="_blank" rel="noopener noreferrer">#799</a></li></ul></li><li>Completed the testing of Mithril with Cardano <code>mainnet</code> network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Completed qualifying the computation of the stake distribution <a href="https://github.com/input-output-hk/mithril/issues/810" target="_blank" rel="noopener noreferrer">#810</a></li><li>Completed the testing of the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li><li>Worked on bugs and optimizations:<ul><li>Fixed a bug that made computation of the stake distribution occur multiple times during an epoch <a href="https://github.com/input-output-hk/mithril/issues/804" target="_blank" rel="noopener noreferrer">#804</a></li><li>Fixed a bug that created deadlocks on the SQLite connection <a href="https://github.com/input-output-hk/mithril/issues/807" target="_blank" rel="noopener noreferrer">#807</a></li><li>Optimized the error message and the behavior of the signer node when KES keys have expired <a href="https://github.com/input-output-hk/mithril/issues/820" target="_blank" rel="noopener noreferrer">#820</a></li><li>Upgraded the infrastructure of the <code>testing-preview</code> and <code>pre-release-preview</code> networks <a href="https://github.com/input-output-hk/mithril/issues/801" target="_blank" rel="noopener noreferrer">#801</a></li><li>Re-genesis of the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/803" target="_blank" rel="noopener noreferrer">#803</a></li><li>Re-genesis of the <code>pre-release-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/818" target="_blank" rel="noopener noreferrer">#818</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-09-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-09T00:00:00.000Z" itemprop="datePublished">March 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on deploying the era activation mechanism to their test networks and preparing the upgrade procedure to be implemented on the signer nodes run by the SPOs. They also refactored the state machines of the aggregator and signer nodes so that they can better handle critical errors, which lead to node panic, from recoverable errors. Additionally, the team continued the deployment of a new test network that runs on the Cardano <code>mainnet</code> and computes the stake distribution with the optimized unreleased Cardano CLI command.</p><p>Finally, they have designed the certification of generic types of data by a Mithril network and they have started implementing its first phase. Also they fixed a bug that made the client Docker image crash at startup.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the deployment of the era behavior switch to the test networks <a href="https://github.com/input-output-hk/mithril/issues/752" target="_blank" rel="noopener noreferrer">#752</a></li><li>Completed the enhancement of datum generation for era markers <a href="https://github.com/input-output-hk/mithril/issues/786" target="_blank" rel="noopener noreferrer">#786</a></li><li>Worked on handling the API version with an era switch <a href="https://github.com/input-output-hk/mithril/issues/727" target="_blank" rel="noopener noreferrer">#727</a></li></ul></li><li>Worked on the epic that implements a relational store in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/779" target="_blank" rel="noopener noreferrer">#779</a>:<ul><li>Worked on the migration/adaptation of the <code>stake_pool</code> table <a href="https://github.com/input-output-hk/mithril/issues/787" target="_blank" rel="noopener noreferrer">#787</a></li></ul></li><li>Completed the refactoring of errors in the signer and aggregator state machines <a href="https://github.com/input-output-hk/mithril/issues/665" target="_blank" rel="noopener noreferrer">#665</a></li><li>Worked on testing Mithril with a <code>mainnet</code> Cardano network <a href="https://github.com/input-output-hk/mithril/issues/777" target="_blank" rel="noopener noreferrer">#777</a></li><li>Worked on fixing bugs with the Docker client image:<ul><li>Fixed a bug that made the Docker client container crash at startup <a href="https://github.com/input-output-hk/mithril/issues/769" target="_blank" rel="noopener noreferrer">#769</a></li><li>Fixed a bug that prevented the restoration of a snapshot with a Docker client <a href="https://github.com/input-output-hk/mithril/issues/791" target="_blank" rel="noopener noreferrer">#791</a></li><li>Worked on testing the Docker client in the <code>Mithril Client multi-platform test</code> workflow <a href="https://github.com/input-output-hk/mithril/issues/794" target="_blank" rel="noopener noreferrer">#794</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-23-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a> distribution that implements minor fixes and updates and completes the wiring of the era activation markers reader into the signer and aggregator nodes. They also designed an event store in the aggregator and completed its implementation as a monitoring solution to provide figures for deployment rates of versions on signer nodes before activating an era switch. Additionally, the team created a dedicated command on their nodes’ CLI that allows generating and signing an era marker’s payload to be stored on the Cardano chain, as well as creating dynamic cases for the end-to-end tests they run on the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2306.0" target="_blank" rel="noopener noreferrer"><code>2306.0</code></a></li><li>Completed the epic that implements signer versions deployment monitoring <a href="https://github.com/input-output-hk/mithril/issues/718" target="_blank" rel="noopener noreferrer">#718</a>:<ul><li>Completed the implementation an event producer/consumer via channel <a href="https://github.com/input-output-hk/mithril/issues/738" target="_blank" rel="noopener noreferrer">#738</a></li><li>Completed the creation of a database and its configuration to save the events on the consumer side <a href="https://github.com/input-output-hk/mithril/issues/740" target="_blank" rel="noopener noreferrer">#740</a></li><li>Completed the creation of events and sending them on the channel on the producer side <a href="https://github.com/input-output-hk/mithril/issues/741" target="_blank" rel="noopener noreferrer">#741</a></li><li>Completed the creation of the signer registration event <a href="https://github.com/input-output-hk/mithril/issues/742" target="_blank" rel="noopener noreferrer">#742</a></li><li>Completed the creation a query to extract the node versions stakes distribution <a href="https://github.com/input-output-hk/mithril/issues/743" target="_blank" rel="noopener noreferrer">#743</a></li></ul></li><li>Worked on the epic that implements eras behavior switch <a href="https://github.com/input-output-hk/mithril/issues/707" target="_blank" rel="noopener noreferrer">#707</a>:<ul><li>Completed the loading of era reader adapters from config in the signer and the aggregator <a href="https://github.com/input-output-hk/mithril/issues/732" target="_blank" rel="noopener noreferrer">#732</a></li><li>Completed the implementation of an era cli command in the aggregator <a href="https://github.com/input-output-hk/mithril/issues/755" target="_blank" rel="noopener noreferrer">#755</a></li><li>Completed the implementation of a dynamic matrix of cases in CI end to end tests <a href="https://github.com/input-output-hk/mithril/issues/760" target="_blank" rel="noopener noreferrer">#760</a></li></ul></li><li>Fixed some bugs:<ul><li>Fixed the unsupported <code>unixepoch()</code> function <a href="https://github.com/input-output-hk/mithril/issues/757" target="_blank" rel="noopener noreferrer">#757</a></li><li>Fixed the problem that prevented some signers from signing on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/730" target="_blank" rel="noopener noreferrer">#730</a></li><li>Update SQLite version to <code>3.40</code> in aggregator infrastructure <a href="https://github.com/input-output-hk/mithril/issues/765" target="_blank" rel="noopener noreferrer">#765</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-09-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-09T00:00:00.000Z" itemprop="datePublished">February 9, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a> distribution that enables the backward/forward compatibility mechanism implemented for seamlessly rolling out soft updates to  Mithril networks. They completed the implementation of the era reader trait that powers the era switch behavior. The team finalized the development of the era reader adapter that retrieves era activation markers from transactions on the Cardano chain. They also completed the relational design of the aggregator store.</p><p>Finally, they created new SPO nodes on the Mithril networks and upgraded the Cardano node to version <code>1.35.5</code> on their <code>devnet</code> and infrastructure.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2304.1" target="_blank" rel="noopener noreferrer"><code>2304.1</code></a></li><li>Fixed a bug that prevented some signers to sign with <code>2304.0-prerelease</code> <a href="https://github.com/input-output-hk/mithril/issues/716" target="_blank" rel="noopener noreferrer">#716</a></li><li>Completed the implementation of an <code>EraChecker</code> that checks if an era is active <a href="https://github.com/input-output-hk/mithril/issues/708" target="_blank" rel="noopener noreferrer">#708</a></li><li>Completed the implementation of an <code>EraReader</code> that gathers era activation data <a href="https://github.com/input-output-hk/mithril/issues/709" target="_blank" rel="noopener noreferrer">#709</a></li><li>Completed the implementation of an <code>EraReader</code> adapter with on chain transaction as source <a href="https://github.com/input-output-hk/mithril/issues/710" target="_blank" rel="noopener noreferrer">#710</a></li><li>Completed the relational design of the aggregator store <a href="https://github.com/input-output-hk/mithril/issues/476" target="_blank" rel="noopener noreferrer">#476</a></li><li>Completed adding a new SPO on the <code>testing-preview</code> network <a href="https://github.com/input-output-hk/mithril/issues/729" target="_blank" rel="noopener noreferrer">#729</a></li><li>Completed the upgrade of the Cardano node to <code>1.35.5</code> <a href="https://github.com/input-output-hk/mithril/issues/725" target="_blank" rel="noopener noreferrer">#725</a></li><li>Fixed flakiness in the CI <a href="https://github.com/input-output-hk/mithril/issues/734" target="_blank" rel="noopener noreferrer">#734</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-26-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-26T00:00:00.000Z" itemprop="datePublished">January 26, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team released a new <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a> distribution that activates the optimization of the snapshot digest computation on the signer and aggregator nodes. They have implemented a backward/forward compatibility mechanism for handling seamless soft updates of the Mithril networks without using synchronous updates when possible. The team also worked on the proof of concept to rely on an on-chain transaction to synchronously trigger the era switch of all the signer and aggregator nodes.</p><p>Finally, they finished upgrading the devnet, fixed the flakiness issues in the end-to-end tests of the CI, and upgraded the SPO documentation to set up a Mithril signer node.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0" target="_blank" rel="noopener noreferrer"><code>2302.0</code></a></li><li>Implemented a backward/forward compatibility mechanism for API messages <a href="https://github.com/input-output-hk/mithril/issues/688" target="_blank" rel="noopener noreferrer">#688</a>:<ul><li>Implement the mechanism for the signer registration <a href="https://github.com/input-output-hk/mithril/issues/689" target="_blank" rel="noopener noreferrer">#689</a></li><li>Implement the mechanism for the signature registration <a href="https://github.com/input-output-hk/mithril/issues/693" target="_blank" rel="noopener noreferrer">#693</a></li><li>Implement the mechanism for epoch settings <a href="https://github.com/input-output-hk/mithril/issues/695" target="_blank" rel="noopener noreferrer">#695</a></li><li>Implement the mechanism for certificate pending <a href="https://github.com/input-output-hk/mithril/issues/696" target="_blank" rel="noopener noreferrer">#696</a></li><li>Implement the mechanism for certificate <a href="https://github.com/input-output-hk/mithril/issues/697" target="_blank" rel="noopener noreferrer">#697</a></li><li>Implement the mechanism for snapshots list <a href="https://github.com/input-output-hk/mithril/issues/698" target="_blank" rel="noopener noreferrer">#698</a></li><li>Implement the mechanism for snapshot <a href="https://github.com/input-output-hk/mithril/issues/699" target="_blank" rel="noopener noreferrer">#699</a></li><li>Update enforcement of API version with Semver <a href="https://github.com/input-output-hk/mithril/issues/705" target="_blank" rel="noopener noreferrer">#705</a></li></ul></li><li>Completed the PoC implementation of backward compatibility with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Completed the PoC implementation of backward compatibility with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Completed the PoC to Read/Write transaction on chain for Era activations <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Completed the upgrade Cardano devnet to 1.35.4 <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-12-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-12T00:00:00.000Z" itemprop="datePublished">January 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has been designing a mechanism for handling seamless updates of the Mithril networks in case of breaking-changes that require synchronous update of the signer nodes. This design has been formalized in an <a href="https://mithril.network/doc/adr/4" target="_blank" rel="noopener noreferrer">ADR</a>. They have been working on an implementation of a proof of concept to rely on an on-chain transaction to synchronously trigger the version switch of all the signer nodes. They have also worked on implementing prototype solutions to minimize the use of breaking changes where soft updates are possible.</p><p>Finally, they have worked on upgrading the <code>devnet</code> and fixing some flakiness in the end to end tests of the CI.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented the redaction of an ADR for handling graceful updates of the Mithril Network <a href="https://github.com/input-output-hk/mithril/issues/671" target="_blank" rel="noopener noreferrer">#671</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>protobuf</code> <a href="https://github.com/input-output-hk/mithril/issues/677" target="_blank" rel="noopener noreferrer">#677</a></li><li>Worked on a proof of concept to handle backward compatibilty of exchanged messages with <code>avro</code> <a href="https://github.com/input-output-hk/mithril/issues/678" target="_blank" rel="noopener noreferrer">#678</a></li><li>Worked on a proof of concept for reading/writing era activation markers with a Cardano chain transaction <a href="https://github.com/input-output-hk/mithril/issues/672" target="_blank" rel="noopener noreferrer">#672</a></li><li>Worked on upgrading the Cardano node of the Mithril <code>devnet</code>, as well as fixing flakiness of the CI <a href="https://github.com/input-output-hk/mithril/issues/523" target="_blank" rel="noopener noreferrer">#523</a></li><li>Prepared and tested the new <code>2302</code> distribution pre-release <a href="https://github.com/input-output-hk/mithril/releases/tag/2302.0-prerelease" target="_blank" rel="noopener noreferrer">2302.0-prerelease</a></li><li>Updated the documentation for SPO to build a signer node in order to better reflect the new release process <a href="https://github.com/input-output-hk/mithril/issues/681" target="_blank" rel="noopener noreferrer">#681</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/mithril/page/5"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/mithril/page/7"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>34 posts tagged with &quot;mithril&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-15-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-15T00:00:00.000Z" itemprop="datePublished">December 15, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released the new distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2248.1" target="_blank" rel="noopener noreferrer"><code>2248.1</code></a> of their nodes. They have published the first version of the Mithril cryptographic library on <a href="https://crates.io/crates/mithril-stm" target="_blank" rel="noopener noreferrer"><code>crates.io</code></a>, the Rust community’s crate registry. They have implemented an optimization on the individual signatures that no longer embed the verification key and stake. They have also enhanced their testing strategy by implementing a workflow that tests that the client binaries produced for multiple platforms (Linux, MacOS and Windows) are able to verify and restore snapshots.</p><p>Finally, they have kept on simplifying the aggregator node&#x27;s multi-signer by removing the signer registration and the certificate creation from its responsibilities.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented removing verification key and stake from single signatures <a href="https://github.com/input-output-hk/mithril/issues/619" target="_blank" rel="noopener noreferrer">#619</a></li><li>Completed the extraction of the signer registration from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/642" target="_blank" rel="noopener noreferrer">#642</a></li><li>Completed the extraction of the certificate creation from the multi-signer <a href="https://github.com/input-output-hk/mithril/issues/638" target="_blank" rel="noopener noreferrer">#638</a></li><li>Implemented a workflow to test client binaries (Linux / MacOS / Windows) <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Completed the signature of the artifacts produced by the CI <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Fixed the protocol parameters transition <a href="https://github.com/input-output-hk/mithril/issues/627" target="_blank" rel="noopener noreferrer">#627</a></li><li>Worked on optimizing the snapshot digest computation <a href="https://github.com/input-output-hk/mithril/issues/510" target="_blank" rel="noopener noreferrer">#510</a></li><li>Worked on enforcing the API protocol versions in the client and signer <a href="https://github.com/input-output-hk/mithril/issues/633" target="_blank" rel="noopener noreferrer">#633</a></li><li>Worked on deactivating the non certified signer registration mode <a href="https://github.com/input-output-hk/mithril/issues/621" target="_blank" rel="noopener noreferrer">#621</a></li><li>Worked on the re-genesis of the test networks <a href="https://github.com/input-output-hk/mithril/issues/651" target="_blank" rel="noopener noreferrer">#651</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/jpraynaud.png" alt="Jean-Philippe Raynaud"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/jpraynaud" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Jean-Philippe Raynaud</span></a></div><small class="avatar__subtitle" itemprop="description">Mithril Tech Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team worked on finalizing their release process by adding new features: publishing their cryptographic library to the Rust community, adding node versions manifest in the release notes, and signing the binaries embedded in the distributions. They deprecated the declarative signer node registration that will be decommissioned in a few weeks. The team also completed the automatic store upgrade process for the signer and aggregator nodes. </p><p>Finally, the team continued working on the redaction of the CIP that will allow the decentralization of Mithril by using the Cardano networking layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Implemented custom Mithril SPOs on testing/pre-release networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Deprecated Signer Declarative Pool Id registration mode <a href="https://github.com/input-output-hk/mithril/issues/585" target="_blank" rel="noopener noreferrer">#585</a></li><li>Completed the second stage of the store automatic migration process <a href="https://github.com/input-output-hk/mithril/issues/600" target="_blank" rel="noopener noreferrer">#600</a></li><li>Completed the deployment pipelines to crates.io registry <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Completed automatic generation of nodes/libraries versions manifest in releases notes <a href="https://github.com/input-output-hk/mithril/issues/599" target="_blank" rel="noopener noreferrer">#599</a></li><li>Completed CI/CD handling of PR from forks <a href="https://github.com/input-output-hk/mithril/issues/597" target="_blank" rel="noopener noreferrer">#597</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/586" target="_blank" rel="noopener noreferrer">#586</a></li><li>Worked on signing the artifacts released in the distributions by the CI/CD <a href="https://github.com/input-output-hk/mithril/issues/587" target="_blank" rel="noopener noreferrer">#587</a></li><li>Worked on multi-platforms end to end test <a href="https://github.com/input-output-hk/mithril/issues/601" target="_blank" rel="noopener noreferrer">#601</a></li><li>Worked on the refactorizaton of the aggregator multi-signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-18-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-18T00:00:00.000Z" itemprop="datePublished">November 18, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview">High level overview<a class="hash-link" href="#high-level-overview" title="Direct link to heading">​</a></h2><p>The Mithril team has released their second distribution 2246.1 following the activation of the alpha version of the new release process. They continued refining its implementation and added a new set of artifacts to the distributions, such as Debian packages and macOS/Windows binaries. The team also enhanced the Mithril Explorer, which now provides more detailed information about epoch settings and easier access to multiple aggregators for the users. They have also worked on an enhanced mechanism for node versioning, storage, and communication protocol. They also implemented version detections for the signer and aggregator nodes, designed the automatic store upgrade feature for these nodes, and enhanced the documentation of the configuration parameters of the several Mithril networks. </p><p>Finally, the team continued working on the elaboration of the CIP that will allow the decentralization of Mithril by relying on the Cardano node network layer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><ul><li>Released a new Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2246.1" target="_blank" rel="noopener noreferrer">2246.1</a></li><li>Completed the first stage of the store migrations process <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Added a Mithril API version that is now exposed in the headers of the requests sent and received by the nodes <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Enhanced the explorer UI with epoch settings information and aggregators management on browser local storage <a href="https://github.com/input-output-hk/mithril/issues/576" target="_blank" rel="noopener noreferrer">#576</a></li><li>Prepared a Daedalus synchronization benchmark video with/without Mithril <a href="https://github.com/input-output-hk/mithril/issues/606" target="_blank" rel="noopener noreferrer">#606</a></li><li>Upgraded the Cardano nodes of the testing Mithril networks to <code>1.35.4</code> <a href="https://github.com/input-output-hk/mithril/issues/594" target="_blank" rel="noopener noreferrer">#594</a></li><li>Worked on implementing SPO tests nodes on testing Mithril networks <a href="https://github.com/input-output-hk/mithril/issues/563" target="_blank" rel="noopener noreferrer">#563</a></li><li>Worked on the CIP design for Mithril piggybacked on the Cardano network layer <a href="https://github.com/input-output-hk/mithril/issues/588" target="_blank" rel="noopener noreferrer">#588</a></li><li>Worked on the refactorizaton of the aggregator multi signer engine <a href="https://github.com/input-output-hk/mithril/issues/398" target="_blank" rel="noopener noreferrer">#398</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-04-mithril">Mithril Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/iquerejeta.png" alt="Iñigo Querejeta Azurmendi"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/iquerejeta" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Iñigo Querejeta Azurmendi</span></a></div><small class="avatar__subtitle" itemprop="description">Cardano Lead Cryptography Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>This sprint, the team has been working on the new continuous integration and delivery (CI/CD) pipelines and the automated deployment of environments as part of the new version of the release process. They also coordinated the migration of the pioneer SPO nodes to these new Mithril networks. They have been implementing the automatic data storage upgrade of the signer and the aggregator nodes. Finally, on the crypto side of things, we&#x27;ve implemented an efficiency improvement on the size of the mithril certificates.</p><h1>Low level overview</h1><ul><li>We have been moving forward on the implementation of the release process <a href="https://github.com/input-output-hk/mithril/issues/500" target="_blank" rel="noopener noreferrer">#500</a>:<ul><li>Setup of the new hosted environments for <code>testing-preview</code>, <code>pre-release-preview</code> and <code>release-preprod</code> with their terraform and GitHub environments <a href="https://github.com/input-output-hk/mithril/issues/542" target="_blank" rel="noopener noreferrer">#542</a></li><li>Adapted the CI workflows to work with the new release process <a href="https://github.com/input-output-hk/mithril/issues/543" target="_blank" rel="noopener noreferrer">#543</a></li><li>Publication of an <a href="https://mithril.network/doc/adr/3" target="_blank" rel="noopener noreferrer">ADR3</a></li><li>Publication of a <a href="https://mithril.network/doc/dev-blog/2022/10/28/updated-environments" target="_blank" rel="noopener noreferrer">dev blog post</a> about Mithril networks evolution </li><li>Releasing our first Mithril distribution <a href="https://github.com/input-output-hk/mithril/releases/tag/2244.0" target="_blank" rel="noopener noreferrer">2244.0</a></li></ul></li><li>Worked on the API versioning mechanism <a href="https://github.com/input-output-hk/mithril/issues/565" target="_blank" rel="noopener noreferrer">#565</a></li><li>Worked on the implementation of the stores migration process for the signer and aggregator nodes <a href="https://github.com/input-output-hk/mithril/issues/562" target="_blank" rel="noopener noreferrer">#562</a></li><li>Prepared a Mithril <code>devnet</code> video demo <a href="https://github.com/input-output-hk/mithril/issues/526" target="_blank" rel="noopener noreferrer">#526</a></li><li>Implemented a batch Merkle Tree proof, which reduces the size of certificates considerably <a href="https://github.com/input-output-hk/mithril/pull/484" target="_blank" rel="noopener noreferrer">#484</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/mithril">mithril</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/mithril/page/6"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>24 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-16-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-48">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+48%22" target="_blank" rel="noopener noreferrer">sprint 48</a><a class="hash-link" href="#high-level-overview-of-sprint-48" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing bootstrap peers, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ioclasses--iosim">IOClasses / IOSim<a class="hash-link" href="#ioclasses--iosim" title="Direct link to heading">​</a></h3><p>We prepared slides for a Haskell meetup were we presented a talk on <code>IOSimPOR</code>.
+The recording will be availble on <code>YouTube</code>.</p><p>We also used the opportunity to do some refactoring of the <code>IOSim</code> code base: <a href="https://github.com/input-output-hk/io-sim/pull/117" target="_blank" rel="noopener noreferrer">io-sim#117</a>.
+We released <code>io-sim-1.3.0.0</code> on <code>Hackage</code>: <a href="https://github.com/input-output-hk/io-sim/pull/119" target="_blank" rel="noopener noreferrer">io-sim#119</a>.</p><p>We also added <code>forkFinally</code> to <code>MonadFork</code> (not included in <code>1.3.0.0</code> release): <a href="https://github.com/input-output-hk/io-sim/pull/123" target="_blank" rel="noopener noreferrer">io-sim#123</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We refactored <code>Resource</code> used by the DNS subsystem: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4707" target="_blank" rel="noopener noreferrer">ouroboros-network#4707</a>.
+We continued reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4625" target="_blank" rel="noopener noreferrer">ouroboros-network#4625</a> PR, which refactors
+<code>RootPeersDNS</code> module.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-47">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+47%22" target="_blank" rel="noopener noreferrer">sprint 47</a><a class="hash-link" href="#high-level-overview-of-sprint-47" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued to review the process of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests">CI / Tests<a class="hash-link" href="#ci--tests" title="Direct link to heading">​</a></h3><p>We investigated our CI issues. We found a memory leak in <code>typed-protocols</code>
+function used for testing codecs which triggered out of memory manager (OOM) on
+some platforms (<a href="https://github.com/input-output-hk/typed-protocols/pull/43" target="_blank" rel="noopener noreferrer">typed-protocols#43</a>); we also found a bug in the connection manager which resulted in CI
+<code>timeouts</code> (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696/commits/010d9b2bd76356373d8c139eaedd8aea7ad90680" target="_blank" rel="noopener noreferrer">connection-manager-fix</a>).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="keepalive-client">KeepAlive client<a class="hash-link" href="#keepalive-client" title="Direct link to heading">​</a></h3><p>We found two small issues with the keep-alive client, which were addressed
+by Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>), <a href="https://github.com/input-output-hk/ouroboros-network/issues/4689" target="_blank" rel="noopener noreferrer">ouroboros-network#4689</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois">Galois<a class="hash-link" href="#galois" title="Direct link to heading">​</a></h3><p>We merged two large PRs prepared by <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4660" target="_blank" rel="noopener noreferrer">inspect <code>error</code> call sites</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4663" target="_blank" rel="noopener noreferrer">implement micro benchmarks for <code>PeerMetrics</code></a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance-cnsa">Cardano Network Service Assurance (CNSA)<a class="hash-link" href="#cardano-network-service-assurance-cnsa" title="Direct link to heading">​</a></h3><p>Galois made the following progress on CNSA:</p><ul><li>a simple <!-- -->[InfuxDB]<!-- --> database backend has been added;</li><li>the documentation has been updated;</li><li>internal improvements to the code;</li><li>progress on a new &quot;CSNA analysis&quot; that provides, for each sampler node, the
+block download throughput in bytes over time.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-chap-release">New CHaP Release<a class="hash-link" href="#new-chap-release" title="Direct link to heading">​</a></h3><p>We cut a new release of <code>ouroboros-netowrk</code> packages to <code>CHaP</code>: <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/547" target="_blank" rel="noopener noreferrer">chap#547</a></p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="more-details">More details<a class="hash-link" href="#more-details" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci--tests-1">CI / Tests<a class="hash-link" href="#ci--tests-1" title="Direct link to heading">​</a></h3><p>We improved the memory footprint of some of our tests by analysing a stream of
+<code>IOSim</code> traces without retaining them, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4696" target="_blank" rel="noopener noreferrer">ouroboros-network#4696</a></p><p>As a safety measure, we introduced an upper bound for heap memory used by test
+artefacts in our <code>nix</code> tests.  We use <code>200MB</code> limit for all tests except for
+<code>network-mux</code> tests which use <code>350MB</code> limit, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We refactored one of our tests to use ephemeral ports thus allowing it to
+run concurrently, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4702" target="_blank" rel="noopener noreferrer">ouroboros-network#4702</a>.</p><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/4623" target="_blank" rel="noopener noreferrer">ouroboros-network#4623</a> which fixes a bunch of test failures.</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4694" target="_blank" rel="noopener noreferrer">inbound-governor: connection leak</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4607" target="_blank" rel="noopener noreferrer">connection-manager: assertion failure</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4605" target="_blank" rel="noopener noreferrer">not released connection</a></li></ul><p>All of them were due to a bug in test logic rather than a bug in production
+code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="release-process">Release Process<a class="hash-link" href="#release-process" title="Direct link to heading">​</a></h3><p>We updated our release process &amp; associated scripts, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4705" target="_blank" rel="noopener noreferrer">ouroboros-network#4705</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-15-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-15T00:00:00.000Z" itemprop="datePublished">October 15, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-46">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+46%22" target="_blank" rel="noopener noreferrer">sprint 46</a><a class="hash-link" href="#high-level-overview-of-sprint-46" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We continued reviewing of bootstrap peers, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4555" target="_blank" rel="noopener noreferrer">ouroboros-network#4555</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We diagnosed the performance regression of the new design. The work on
+<code>typed-protocols</code> will be postponed.  For more details see the
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.  As an outcome of the performance debugging we prepared
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4691" target="_blank" rel="noopener noreferrer">PR</a> which updates the <code>demo-ping-pong</code> and
+<code>demo-chain-sync</code> applications.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We made progress in review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4644" target="_blank" rel="noopener noreferrer">ouroboros-network#4644</a>, which simplifies the
+peer sharing and fixes the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4642" target="_blank" rel="noopener noreferrer">ouroboros-network#4642</a> issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We reviewed the <a href="https://github.com/input-output-hk/ouroboros-network/pull/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a> PR which inspects all the uses of
+<code>error</code> in <code>ouroboros-network</code>.  The PR was prepared by Galois.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-02-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-02T00:00:00.000Z" itemprop="datePublished">October 2, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-45">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+45%22" target="_blank" rel="noopener noreferrer">sprint 45</a><a class="hash-link" href="#high-level-overview-of-sprint-45" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We started reviewing the bootstrap peers PR, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We discovered a performance regression when using <code>typed-protocols-0.2.0.0</code>, and we
+started investigating where it comes from.  Currently, we see that
+<code>typed-protocols-0.2.0.0</code> can outperform <code>typed-protocols-0.1.0.0</code> when running
+in isolation with a simple <code>ping-pong</code> protocol, so the regression might be in
+the new block fetch implementation which comes with <code>typed-protocols-0.2.0.0</code>
+See <a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">typed-protocols#3</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>We merged two PRs written by Galois engineers:</p><ul><li>a pull request which refactors the main entry function for P2P, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>; </li><li>a pull request which reviews usage of <code>unsafe</code> function in the network code based.</li></ul><p>Galois also made progress with the following two issues:</p><ul><li>add microbenchmarks to some of our tests: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a></li><li>inspect use of <code>error</code> in <code>ouroboros-network</code> repository:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosimpor">IOSimPOR<a class="hash-link" href="#iosimpor" title="Direct link to heading">​</a></h4><p>We found and fixed a bug in <code>IOSimPOR</code>.  We&#x27;d like to thank Prof. John Hughes
+(Quviq AB) for helping us with debugging the issue.</p><p>We also provided a more uniform API for <code>IOSimPOR</code>, and added ways to make the
+debugging similar problems in the future easier.</p><details class="details_lb9f alert alert--info details_b_Ee" data-collapsed="true"><summary>Technical Details on IOSim refactoring</summary><div><div class="collapsibleContent_i85q">We removed the usage of `unsafePerformIO` from `IOSimPOR`, which also means removing parallel evaluation of discovered races.  We found out that it gives only 25% better performance.  In the future QuickCheck will offer running different cases in parallel which should provide better performance as there are no dependencies between the evaluation of different test cases, while schedules are discovered while running which limits the possible gains from running them concurrently.  The performance was not the only factor though.  When using parallelism in the lazy `ST` monad we&#x27;d need to rely on memory guarantees of `STRefs`.  In `GHC-9.6` they share the implementation with `IORef`s, but it might not be the case in the future.</div></div></details><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iosim">IOSim<a class="hash-link" href="#iosim" title="Direct link to heading">​</a></h4><p>To prepare for the next release, we consolidate packages taking advantage of
+the public sublibraries supported now both by <code>cabal</code> and <code>Hackage</code>.   This is
+a work in progress, <a href="https://github.com/input-output-hk/io-sim/issues/114" target="_blank" rel="noopener noreferrer">io-sim#114</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-newtork-service-assurance">Cardano Newtork Service Assurance<a class="hash-link" href="#cardano-newtork-service-assurance" title="Direct link to heading">​</a></h3><p>Galois made the following progress:</p><ul><li>A test run of spinning up a CNSA instance was done, as a result documentation
+was updated.</li><li>Based on the IOG code review of the CNSA code, updates to the CNSA code were
+made.</li><li>Galois has started the design for adding a CNSA analysis for &quot;fetched bytes
+over time while node is syncing&quot;.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, we&#x27;ve seen increase in P2P adoption.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-10-04-p2p-relays-75c2baf57ea9346a40f0098b2abb4a99.png" width="2668" height="1576" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-10-04-relay-versions-5168d3ed0ad365a18e86263fcccffd23.png" width="2674" height="1580" class="img_ev3q"></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We upstreamed our FFI bindings to Windows named pipes to <code>Win32</code> package, the
+PR was accepted and merged.</p><p>We also received an external contribution which enhanced our documentation, see
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4676" target="_blank" rel="noopener noreferrer">ouroboros-network#4676</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-44">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+44%22" target="_blank" rel="noopener noreferrer">sprint 44</a><a class="hash-link" href="#high-level-overview-of-sprint-44" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>In this sprint, we focused on developing bootstrap peers.</p><p>Thanks to the input from Samuel Leathers (IOG) and John Lotoski (IOG), we
+identified a possible improvement to bootstrap peers. A more detailed
+description is available <a href="https://github.com/input-output-hk/ouroboros-network/issues/4675" target="_blank" rel="noopener noreferrer">here</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node-840-release">Cardano-Node-8.4.0 Release<a class="hash-link" href="#cardano-node-840-release" title="Direct link to heading">​</a></h3><p>We also were responsible for the <code>cardano-node-8.4.0-pre</code> release.  A final
+integration <a href="https://github.com/input-output-hk/cardano-node/pull/5467" target="_blank" rel="noopener noreferrer">PR</a> is currently being merged. We published
+new versions of <code>ouroboros-consensus</code>, <code>cardano-api</code> and <code>cardano-cli</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="towards-typed-protocols-0200">Towards Typed Protocols 0.2.0.0<a class="hash-link" href="#towards-typed-protocols-0200" title="Direct link to heading">​</a></h3><p>We also updated the future <code>typed-protocols-0.2.0.0</code> and its integration with
+<code>cardano-node</code>.  This is towards our goal which we planned for the next
+quarter.  The identified tasks are to fix breaking tests, and then measure and
+address possible performance regressions.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tech-debt">Tech Debt<a class="hash-link" href="#tech-debt" title="Direct link to heading">​</a></h3><p>Mark Tullsen (Galois) submitted two more PRs: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4663" target="_blank" rel="noopener noreferrer">ouroboros-network-#4663</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4664" target="_blank" rel="noopener noreferrer">ouroboros-network-#4664</a>.  We provided feedback on their other pull requests: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4660" target="_blank" rel="noopener noreferrer">ouroboros-network-#4660</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-adoption">P2P adoption<a class="hash-link" href="#p2p-adoption" title="Direct link to heading">​</a></h3><p>In the last two weeks, there was a regression in P2P adoption concerning
+the number of SPOs or stakes, although the number of overall P2P relays has
+increased.  Karl Knutsson (<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a>) is investigating
+this issue.
+<img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-09-14-p2p-relays-1b3da3da7ec3915f63ca8668bd38aff9.png" width="2014" height="1586" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-09-14-relay-versions-a689a96e93e12ee1c78dfe14229f0ea9.png" width="2016" height="1576" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">Cardano Foundation</a> and their mainnet
+monitoring infrastructure.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We are in the process of upstreaming our ffi to Windows Named Pipes API to the <code>Win32</code> package, see <!-- -->[win32-220]<!-- -->.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/network/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>24 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-43">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+43%22" target="_blank" rel="noopener noreferrer">sprint 43</a><a class="hash-link" href="#high-level-overview-of-sprint-43" title="Direct link to heading">​</a></h2><p>In this sprint, we received contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> &amp; <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>.  Karl Knutsson
+(<a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>) has addressed various issues regarding peer churning in P2P, timeouts
+and our <code>WireShark</code> dissector.  While the <a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> developers focused on
+addressing issues from their review last year. See below for more details.</p><p>We continued working on bootstrap peers <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a>.</p><p>We refactored our test suites: they are split into <code>io-tests</code> which require to
+be run natively on all platforms (these tests mostly contain tests that
+require <code>IO</code> system calls) and <code>sim-tests</code> which are platform independent.  We
+run <code>io-tests</code> on all supported platforms (e.g. <code>x86_64-linux</code>,
+<code>x86-64-darwin</code>, <code>aarch64-darwin</code> and <code>x86_64-w64-mingw32</code> (Windows)) natively.
+The <code>sim-tests</code> are not executed on <code>Windows</code> due to memory limitations on
+GitHub Actions runners. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4653" target="_blank" rel="noopener noreferrer">ouroboros-network-#4653</a></p><p>We also started rebasing <code>typed-protocols</code> refactoring branches.</p><p>Marcin was appointed as the <code>cardano-node</code> release engineer for the <code>8.4.0-pre</code>
+version.  So far he integrated <code>cardano-ledger-conway-1.8</code> and
+<code>ouroboros-network-0.9.1.0</code> to <code>ouroboros-consensus</code>, <code>cardano-cli</code> and
+<code>cardano-api</code>.  Once we will have an integration branch for <code>cardano-node</code>,
+<code>cardano-ledger-conway-1.8</code> and <code>ouroboros-consensus</code> packages can be released
+to <code>CHaP</code> and PRs can be merged once they go through review &amp; CI.</p><p>We also fixed some smaller issues regarding peer sharing (both were discovered
+by Karl from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>). More details are included below.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="progress-on-p2p-addoption">Progress on P2P addoption<a class="hash-link" href="#progress-on-p2p-addoption" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="spo-relays">SPO relays<a class="hash-link" href="#spo-relays" title="Direct link to heading">​</a></h4><p>There are currently ~2000 relays running P2P
+enabled nodes that belong to 557 pools with a combined stake of 7900Mil Ada. On
+16th of August it was ~1700 relays, 531 pools with a combined stake of 7700Mil
+Ada.</p><p><img loading="lazy" alt="P2P relays" src="/cardano-updates/assets/images/2023-08-31-p2p-relays-8e5be189ad8437375c5067026c003556.png" width="2034" height="1588" class="img_ev3q"></p><p>The following graphs show several different versions of relays running on the mainnet.  The
+green line <code>NodeToNodeVersionV10.True</code> denotes P2P relays, which slowly
+increase over time.  The <code>V9</code> and earlier versions of the <code>node-to-node</code>
+the protocol indicates nodes version <code>1.35.x</code> or earlier.
+<img loading="lazy" alt="node versions" src="/cardano-updates/assets/images/2023-08-31-relay-versions-0a8d445e1b0f3a793ccdd94f4aacd421.png" width="2038" height="1594" class="img_ev3q"></p><p>Data has been kindly provided by <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a> and their mainnet monitoring
+infrastructure.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="iog-relays">IOG relays<a class="hash-link" href="#iog-relays" title="Direct link to heading">​</a></h4><p>As of this week, 90% of IOG relays are running a P2P setup. In the next sprint all
+IOG relays will be running P2P.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>In this sprint, we got a few contributions from <a href="https://cardanofoundation.org/" target="_blank" rel="noopener noreferrer">CF</a>:</p><ul><li>Karl made peer churning mechanism less aggressive <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>; and</li><li>he added timeouts for idle states in <code>ChainSync</code> &amp; <code>KeepAlive</code>
+miniprotocols.  These timeouts help a node remove idle connections from the
+responder (server) side <a href="https://github.com/input-output-hk/ouroboros-network/pull/4648" target="_blank" rel="noopener noreferrer">ouroboros-network-#4648</a>.</li><li>he improved the <code>WireShark</code> dissector by adding support for the <code>peer-sharing</code> mini-protocol <a href="https://github.com/input-output-hk/ouroboros-network/pull/4656" target="_blank" rel="noopener noreferrer">ouroboros-network-#4656</a>.</li></ul><p><a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a> has been making progress in addressing some of the issues they raised in their review (last year):</p><ul><li>Mark Tullsen (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been working on refactoring the main entry function of P2P <a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review);</li><li>Sam Cowger (<a href="https://galois.com/" target="_blank" rel="noopener noreferrer">Galois</a>) has been reviewing all use cases of <code>error</code> and <code>unsafe</code> calls
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4661" target="_blank" rel="noopener noreferrer">ouroboros-network-#4661</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h2><ul><li>Light peer sharing is only enabled when peer sharing is turned on <a href="https://github.com/input-output-hk/ouroboros-network/pull/4652" target="_blank" rel="noopener noreferrer">ouroboros-network-#4652</a>;</li><li>Handshake incorrectly reports peer sharing value.  It&#x27;s supposed to relay the
+remote value, but instead, it returns the local value. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4642" target="_blank" rel="noopener noreferrer">ouroboros-network-#4642</a> (in review).</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="async-demotion-test-fix">Async Demotion Test Fix<a class="hash-link" href="#async-demotion-test-fix" title="Direct link to heading">​</a></h2><ul><li>We fixed an async demotion test failure which turned out to be a weakness of
+the test itself rather than a bug in the connection manager. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4655" target="_blank" rel="noopener noreferrer">ouroboros-network-#4655</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-42">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+42%22" target="_blank" rel="noopener noreferrer">sprint 42</a><a class="hash-link" href="#high-level-overview-of-sprint-42" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We merged and released a new version of the <code>ouroboros-network</code> package (version
+<code>0.9.0.0</code>) which includes <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">big ledger peers feature</a>.
+This is the primary peer selection mechanism to defend against eclipses.   We
+also prepared a PR to updated <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/165" target="_blank" rel="noopener noreferrer"><code>ouroboros-cosnensus</code></a>
+and <a href="https://github.com/input-output-hk/ekg-forward/pull/30" target="_blank" rel="noopener noreferrer"><code>ekg-forward</code></a> packages.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cddl-specs-for-protocol-codecs">CDDL specs for protocol codecs<a class="hash-link" href="#cddl-specs-for-protocol-codecs" title="Direct link to heading">​</a></h3><p>We made the <code>cddl</code> spec for network codec more inline with the implementation
+which is highly polymorphic.  <code>cddl</code> doesn&#x27;t have the notion of polymorphism,
+but has <code>any</code> which can generate any valid cbor term.  We matched it with an
+<code>Any</code> type on the Haskell side and made all remaining tests &amp; specs use it.
+This simplified the specifications and made it easier to understand which parts
+are defined in the spec, and which parts are left unspecified.  See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4595" target="_blank" rel="noopener noreferrer">ouroboros-network#4595</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network-framework-api-changes">Ouroboros-Network-Framework API changes<a class="hash-link" href="#ouroboros-network-framework-api-changes" title="Direct link to heading">​</a></h3><p>We also released <code>ouroboros-network-framework</code> and other network components.
+The <code>ouroboros-network-framework</code> package contains a redesign of API exposed to
+<code>ouroboros-consensus</code>.  We consolidated, cleaned it and made it easier to
+extend in the future if there will be new arguments that need to be passed to
+mini-protocol initiator and responders which comes from the low-level network
+layer.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nix-setup-ci">Nix setup (CI)<a class="hash-link" href="#nix-setup-ci" title="Direct link to heading">​</a></h3><p>We also made a major review of our <code>nix</code> setup.  With help from our DevX team
+we ended up with a clean <code>flake.nix</code> file which can:</p><ul><li>compile &amp; test the code on <code>x86_64-linux</code>, <code>x86_64-darwin</code> and <code>aarch64-darwin</code></li><li>cross-compile to <code>Windows</code> on <code>x86_64-linux</code> </li></ul><p>And provides a shell which contains all the build tools, including <code>ghc-9.6</code>,
+<code>hls</code>, <code>cddl</code>, and more.  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4640" target="_blank" rel="noopener noreferrer">ouroboros-network#4640</a>,
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4643" target="_blank" rel="noopener noreferrer">ouroboros-network#4643</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-network-service-assurance">Cardano Network Service Assurance<a class="hash-link" href="#cardano-network-service-assurance" title="Direct link to heading">​</a></h3><ul><li>The work and writeup in finishing up the CNSA, first stage (first
+contract).</li><li>Getting Sam Cowger (Galois Inc) up to speed.</li><li>The IOG Networking team carried a reivew of CNSA project progress: a limitted
+code &amp; design review.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="galois-review">Galois Review<a class="hash-link" href="#galois-review" title="Direct link to heading">​</a></h3><p>Sam Cowger and Mark Tullsen (Galois Inc) have made some progress on each of the tech debt issues</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3832" target="_blank" rel="noopener noreferrer">ouroboros-network#3832</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3834" target="_blank" rel="noopener noreferrer">ouroboros-network#3834</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3835" target="_blank" rel="noopener noreferrer">ouroboros-network#3835</a>,</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3836" target="_blank" rel="noopener noreferrer">ouroboros-network#3836</a>;</li></ul><p>scoping, requirements, and getting started.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci">CI<a class="hash-link" href="#ci" title="Direct link to heading">​</a></h3><p>We added a nightly run for GitHub actions and made the GitHub actions test be
+executed with extra concurrency <a href="https://github.com/input-output-hk/ouroboros-network/pull/4637" target="_blank" rel="noopener noreferrer">ouroboros-network#4637</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4649" target="_blank" rel="noopener noreferrer">ouroboros-network#4649</a>.</p><p>We also added GitHub&#x27;s dependabot <a href="https://github.com/input-output-hk/ouroboros-network/pull/4650" target="_blank" rel="noopener noreferrer">ouroboros-network#4650</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bootstrap-peers">Bootstrap Peers<a class="hash-link" href="#bootstrap-peers" title="Direct link to heading">​</a></h3><p>We settled on implementation design of bootstrap peers which is being
+implemented, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-overview-of-sprint-41">High-level overview of <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?filterQuery=sprint%3A%22sprint+41%22" target="_blank" rel="noopener noreferrer">sprint 41</a><a class="hash-link" href="#high-level-overview-of-sprint-41" title="Direct link to heading">​</a></h2><p><em>24th July - 6th August 2023</em></p><p>We started the implementation of <strong>bootstrap peers</strong>.  Bootstrap peers are designed
+to provide a safety guarantee for nodes joining the network while still taking
+advantage of the distributed network for nodes that are synced.  This will be
+an intermediate step before Genesis which will allow for further distribute the
+system.  The bootstrap peers will be run by some trusted partners like CF,
+Emurgo or IOG.   They are primarily designed for leaf nodes (e.g. full node
+wallets), which often end up syncing and require access to the honest chain. See
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4615" target="_blank" rel="noopener noreferrer">ouroboros-network#4615</a> for a more detailed implementation plan.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="other-contributions">Other contributions<a class="hash-link" href="#other-contributions" title="Direct link to heading">​</a></h2><p>We started to use <code>nothunks</code> library to discover if we have any unevaluated
+thunks which can lead to memory leaks <a href="https://github.com/input-output-hk/ouroboros-network/issues/4633" target="_blank" rel="noopener noreferrer">ouroboros-network#4633</a>.  We found
+a small one in the peer metric component of the P2P networking stack.  Fixing
+it put us on a small detour of fixing the API of the <a href="https://github.com/input-output-hk/cardano-base/tree/master/strict-checked-vars" target="_blank" rel="noopener noreferrer"><code>strict-checked-vars</code></a>
+package: <a href="https://github.com/input-output-hk/cardano-base/pulls/431" target="_blank" rel="noopener noreferrer">cardano-base#431</a>, <a href="https://github.com/input-output-hk/cardano-base/pulls/432" target="_blank" rel="noopener noreferrer">cardano-base#432</a>, as well as adding <code>NFData</code>
+instance to <a href="https://github.com/input-output-hk/io-sim/pull/110" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>.  We also improved <code>nothunks</code>
+library to make debugging easier and we provided a <code>NoThunks</code> instance for
+<code>ThreadId</code> which we will need in the future (see <a href="https://github.com/input-output-hk/nothunks/pull/33" target="_blank" rel="noopener noreferrer">nothunks#33</a>).</p><p>We released a new version of <code>io-classes</code> (version <code>1.2.0.0</code>) and related
+packages to <a href="https://hackage.haskell.org/package/io-classes-1.2.0.0io-classes-1.2.0.0" target="_blank" rel="noopener noreferrer">Hackage</a>.</p><p>We addressed all review comments on the eclipse evasion PR which introduces big
+ledger peers, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">ouroboros-network#3886</a>.</p><p>We fixed how <code>SIGHUP</code> signal handlers are registered, so it&#x27;s not possible to
+shutdown a node which was starting while trying to update network topology,
+see <a href="https://github.com/input-output-hk/cardano-node/pull/5421" target="_blank" rel="noopener noreferrer">cardano-node#5421</a>.</p><p>I didn&#x27;t mention that in the previous update, so here it goes: in the previous
+sprint we released <a href="https://github.com/input-output-hk/ouroboros-network/blob/f84fcddce472d6cfc2b838b20a2ad085fe0896ed/ouroboros-network/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-0.8.2.0</code></a> and
+<a href="https://github.com/input-output-hk/ouroboros-network/blob/ouroboros-network-framework-0.7.0.0/ouroboros-network-framework/CHANGELOG.md" target="_blank" rel="noopener noreferrer"><code>ouroboros-network-framework-0.7.0.0</code></a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-31-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-31T00:00:00.000Z" itemprop="datePublished">July 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update-sprints-39--40">Network Update (Sprints 39 &amp; 40)<a class="hash-link" href="#network-update-sprints-39--40" title="Direct link to heading">​</a></h2><p>The network updates got distracted.  Mostly because of me leaving for the meeting in Edinburgh, Scotland and the being away.
+It was great to see and talk to so many of the community members.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-39-jun-26---jul-09">Sprint 39 (Jun 26 - Jul 09)<a class="hash-link" href="#sprint-39-jun-26---jul-09" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes">Major changes<a class="hash-link" href="#major-changes" title="Direct link to heading">​</a></h4><p>Now the following <strong>list of traces will be turned on by default</strong>:</p><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-client-protocol"><code>node-to-client</code> protocol<a class="hash-link" href="#node-to-client-protocol" title="Direct link to heading">​</a></h5><ul><li><code>LocalConnectionManagerTracer</code> </li><li><code>LocalInboundGovernor</code></li><li><code>LocalHandshake</code></li><li><code>LocalServer</code></li></ul><h5 class="anchor anchorWithStickyNavbar_LWe7" id="node-to-node-protocol"><code>node-to-node</code> protocol<a class="hash-link" href="#node-to-node-protocol" title="Direct link to heading">​</a></h5><ul><li><code>Server</code></li></ul><p>See <a href="https://github.com/input-output-hk/cardano-node/pull/5353" target="_blank" rel="noopener noreferrer">cardano-node#5353</a>.  This will be released in <code>node-8.2.0</code>.</p><p>We made sure that <code>cardano-client-0.1.0.x</code> library (which is <code>db-sync</code>) is not using the experimental <code>node-to-client</code> protocol.
+The <code>cardano-client-0.2.0.0</code> was not affected.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4612" target="_blank" rel="noopener noreferrer">ouroboros-network#4612</a>.</p><p>We merged the <strong>dynamic block production feature</strong> to <code>ouroboros-consensus</code> (also available in the <code>cardano-node-8.2.0</code> release).
+Dynamic block production enables hot-swap p2p nodes, which are important for the p2p deployment of block-producing nodes.
+See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">ouroboros-network#3159</a>, <!-- -->[ouroboros-consensu#140]<!-- -->.</p><p>We continued to review the implementation of big ledger peers for eclipse evasion, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">ouroboros-network#4462</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="minor-changes">Minor changes<a class="hash-link" href="#minor-changes" title="Direct link to heading">​</a></h4><ul><li>We refactored the top level <code>cardano-node</code> error handler: <a href="https://github.com/input-output-hk/cardano-node/pull/5356" target="_blank" rel="noopener noreferrer">cardano-node#5356</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sprint-40-jul-09---jul-23">Sprint 40 (Jul 09 - Jul 23)<a class="hash-link" href="#sprint-40-jul-09---jul-23" title="Direct link to heading">​</a></h3><h4 class="anchor anchorWithStickyNavbar_LWe7" id="major-changes-1">Major changes<a class="hash-link" href="#major-changes-1" title="Direct link to heading">​</a></h4><p>We integrated <code>ouroboros-network-0.8.2.0</code> with the <code>master</code> branch of <code>cardano-node</code> for the <code>8.2.0</code> release (the version match between <code>ouroboros-network</code> and <code>cardano-node</code> is purely accidental).
+This includes:</p><ul><li>integration with <strong>dynamic block production</strong> feature.
+This feature is documented in the <a href="https://github.com/input-output-hk/cardano-node/pull/5399" target="_blank" rel="noopener noreferrer">following PR</a>.</li><li><strong>Warm valency</strong> for local root peers (see below).</li></ul><p>For the full list of features included in the <code>8.2.0</code> release from the network side, please take a look at the <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.2.0-pre" target="_blank" rel="noopener noreferrer">pre-release nodes</a>.</p><p>We <strong>improved the memory footprint</strong> of peer metrics measured by the P2P stack.
+Peer metrics are used to decide which peers to demote every churn interval (roughly every hour with some probabilistic fluctuation).
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4620" target="_blank" rel="noopener noreferrer">ouroboros-network#4620</a>.
+The improvement will be available in <code>cardano-node-8.2.0</code>.</p><p>We added an <strong>optional explicit warm valency</strong> to local root peers of the <strong>P2P topology file</strong>.
+Previously we used an implicit valency, e.g. the node keeps connections to all of the local roots; with local warm valency the node will pick only that many peers from the local root peers group to connect to.
+The hot valency (previously known simply as valency) hasn&#x27;t changed, but it must be smaller than the warm valency as hot peers are selected from warm ones.
+Warm valency is a useful feature to limit resource consumption if one of the domain names in the local root peer group resolves to many IP addresses.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4575" target="_blank" rel="noopener noreferrer">ouroboros-network#4575</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5409" target="_blank" rel="noopener noreferrer">cardano-node#5409</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions">Key contributions<a class="hash-link" href="#key-contributions" title="Direct link to heading">​</a></h3><p>We held a series of session to review the implementation of big ledger peers
+(eclipse evasion). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>.</p><p>We get a request from a 3rd party to clarify an inconsistency between CDDL spec
+and protocol implementation.  We worked out a nice solution which takes
+advantage of the <code>any</code> notion available in <code>CDDL</code>.  On the Haskell side we
+provide <code>Any</code> type which gen generate almost any CBOR term (some are excluded
+only because they are not decoded back to the same form, and we relay on that
+property).  See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4580" target="_blank" rel="noopener noreferrer">#4580</a>.</p><p>We fixed a bunch of problems of the <code>cardano-cli ping</code> command.  It also now has
+a limited support of <code>node-to-client</code> mini-protocol (the <code>-c</code> option is
+ignored, as it cannot be supported by <code>node-to-client</code> protocol).  Note that
+the format of messages has changed, timestamps are printed in ISO8601 format.
+See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4601" target="_blank" rel="noopener noreferrer">#4601</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5326" target="_blank" rel="noopener noreferrer">#5326</a>, <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>, <a href="https://github.com/input-output-hk/cardano-cli/pull/30" target="_blank" rel="noopener noreferrer">#30</a></p><p>In order to provide a new flag in the topology file which enables ledger peers
+when the chain is close to the tip, we continued to work on <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.  This is
+currently in review, the consensus team will need to provide us with the new
+api.  This feature is useful for two reasons: makes it easier to maintain
+a topology file, it will also limit the traffic on public roots generated by
+for example full node wallets and distribute it to ledger peers.</p><p>We also continued to work on a blog post which describes the journey of design
+&amp; implementation of the dynamic P2P network layer.  Too be announced soon :).  </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-changes">Other smaller changes<a class="hash-link" href="#other-smaller-changes" title="Direct link to heading">​</a></h3><p>We limit the concurrency of resolving dns names.  Up to 8 root peers or ledger
+peers DNS names are resolved concurrently, and at most 2 local root peer DNS
+names. See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4596" target="_blank" rel="noopener noreferrer">#4596</a>.</p><p>We fixed handshake query timeout in <a href="https://github.com/input-output-hk/ouroboros-network/pull/4603" target="_blank" rel="noopener noreferrer">#4603</a>.</p><p>We renamed one of the block-fetch decision constructors as requested by the
+consensus team, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4608" target="_blank" rel="noopener noreferrer">#4608</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/network"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/network/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>24 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-12T00:00:00.000Z" itemprop="datePublished">June 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="key-contributions-and-advances">Key contributions and advances<a class="hash-link" href="#key-contributions-and-advances" title="Direct link to heading">​</a></h3><p>We merged <code>light peer sharing</code> feature, which allows to include inbound peers
+into outbound governor known peers.  This is the primary way for new
+unregistered nodes to enter the network, which then can be shared using peer
+sharing.  Note that peer sharing is an experimental feature which is disabled
+until genesis &amp; eclipse evasion as fully implemented. See <a href="https://github.com/input-output-hk/ouroboros-network/issues/3596" target="_blank" rel="noopener noreferrer">#3596</a>.</p><p>We are making progress reviewing eclipse evasion, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3886" target="_blank" rel="noopener noreferrer">#3886</a>.</p><p>We fixed another bug in local root peers.  We found out that if the local roots
+where ignored until the first domain name was resolved, see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4583" target="_blank" rel="noopener noreferrer">#4583</a>.  The bug
+fix was backported and released in <code>ouroboros-network-0.8.1.1</code>.</p><p>We re-started working on dynamically enabling block forging to address issue
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">#3159</a>, which will enable us to release <code>P2P</code> on block producing nodes. See <a href="https://github.com/input-output-hk/ouroboros-consensus/pull/140" target="_blank" rel="noopener noreferrer">#140</a>.</p><h4 class="anchor anchorWithStickyNavbar_LWe7" id="new-cardano-ping--cardano-cli-ping-release">New <code>cardano-ping</code> / <code>cardano-cli ping</code> release<a class="hash-link" href="#new-cardano-ping--cardano-cli-ping-release" title="Direct link to heading">​</a></h4><p>We prepared a new release of <code>cardano-ping</code> library which supports the new
+query feature (query supported versions). See <a href="https://github.com/input-output-hk/ouroboros-network/pull/4589" target="_blank" rel="noopener noreferrer">#4589</a>, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4593" target="_blank" rel="noopener noreferrer">#4593</a> and <a href="https://github.com/input-output-hk/cardano-node/pull/5313" target="_blank" rel="noopener noreferrer">#5313</a>.
+The new version of <code>cardano-cli ping</code> will use <code>ISO8601</code> formatted
+timestamps; also the formatting of ping results is slightly improved, and it
+will introduce the new <code>--query-versions</code> (<code>-Q</code>) switch.  If the remote site
+supports the query parameter, the command will print:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.064</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.064010896s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Queried versions [NodeToNodeVersionV11 764824073 InitiatorAndResponder,NodeToNodeVersionV10 764824073 InitiatorAndResponder,NodeToNodeVersionV9 764824073 Initiat</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">orAndResponder,NodeToNodeVersionV8 764824073 InitiatorAndResponder,NodeToNodeVersionV7 764824073 InitiatorAndResponder]</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>otherwise it will print the negotiation results</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port network rtt: 0.045</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port handshake rtt: 0.101867615s</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">redacted-ip:port Negotiated version NodeToNodeVersionV10 764824073 InitiatorAndResponder</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>Note that in that case <code>cardano-cli ping</code> offers <code>InitiatorAndResponder</code>, which
+allows us to detect whether the remote side is an <code>InitiatorOnly</code> or
+<code>InitiatorAndResponder</code>.   Also <code>cardano-cli ping</code> will no longer announce
+itself as <code>InitiatorAndResponder</code>, except for the case mentioned above.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="other-smaller-contributions">Other smaller contributions<a class="hash-link" href="#other-smaller-contributions" title="Direct link to heading">​</a></h3><p>On a request from the Marlow Team, we published haddocks of <code>typed-protocols</code>,
+which are now available <a href="https://input-output-hk.github.io/typed-protocols/" target="_blank" rel="noopener noreferrer">here</a> (<a href="https://github.com/input-output-hk/typed-protocols/pull/40" target="_blank" rel="noopener noreferrer">#40</a>, <a href="https://github.com/input-output-hk/typed-protocols/pull/41" target="_blank" rel="noopener noreferrer">#41</a>).</p><p>We made a new release of <code>strict-stm-1.1.0.1</code> on Hackage, which fixed a bug in
+package description file, <a href="https://github.com/input-output-hk/io-sim/pull/101" target="_blank" rel="noopener noreferrer">#101</a> .</p><p>We also helped to debug a deadlock when using named pipes on Windows in the new
+<code>RawBearer</code> API.  The API is being used to store secret keys only in memory.
+The PR <a href="https://github.com/input-output-hk/ouroboros-network/pull/4395" target="_blank" rel="noopener noreferrer">#4395</a> is under review.</p><p>We also have two more PRs which are under review:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>: enabling ledger peers on a fixed number of slots before the tip of the chain;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4580" target="_blank" rel="noopener noreferrer">#4580</a>: a PR which fixes inconsistencies in one of our cddl specs.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-26-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-26T00:00:00.000Z" itemprop="datePublished">May 26, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We continued working on <code>eclipse-evasion</code>.  We also analysed and fixed a bug
+when using DNS names in local root peers.  We continued working on engineering
+blog post about P2P. We released a new version of packages for
+<code>cardano-node-8.1.0</code> release.</p><p>We improved our CI, removed obsolete scripts add extra validation which checks
+if <code>CHANGELOG.md</code> files were updated.</p><p>We also improved release scripts.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><ul><li>Eclipse evasion: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a></li><li>Local root peers bug fix: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4559" target="_blank" rel="noopener noreferrer">#4559</a></li><li>Release to CHaP: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li><li>CI improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4572" target="_blank" rel="noopener noreferrer">#4572</a></li><li>Release script improvements: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4573" target="_blank" rel="noopener noreferrer">#4573</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-12T00:00:00.000Z" itemprop="datePublished">May 12, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We started working on a new way to switch between root &amp; ledger peers (see
+below).  We continued to work on <code>eclipse-evasion</code>.  We merged changes to
+Handshake contributed by Galois Inc.  We made improvements to our tests (fixed
+a flaky test, added cddl specs for <code>NodeToNodeVersionData</code> and
+<code>NodeToClientVersionData</code>).  We improved our CI and automated the process of
+releasing new package version to <code>CHaP</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-summary">Detailed summary<a class="hash-link" href="#detailed-summary" title="Direct link to heading">​</a></h2><p>We continued to work on testing <code>eclipse-evasion</code>.</p><p>We came up with an idea to limit how full node wallets relay on root peers
+(currently operated by IOG, in future also CF and Emurgo).  We designed
+a switch to use ledger peers if the node tip is close enough to the current
+time.  For more details see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4530" target="_blank" rel="noopener noreferrer">#4530</a>.</p><p>We merged changes to the handshake mini-protocol which allow one to query
+server&#x27;s <code>node-to-node</code> / <code>node-to-client</code> parameters.  We are grateful to
+Galois Inc. for implementing it, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4256" target="_blank" rel="noopener noreferrer">#4256</a> and <a href="https://github.com/input-output-hk/ouroboros-network/issues/4538" target="_blank" rel="noopener noreferrer">#4538</a>.  We published new version
+of packages to CHaP <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/253" target="_blank" rel="noopener noreferrer">chap-#253</a>.</p><p>We added <code>DiffusionError</code> wrapper.  Thanks to it, <code>ouroboros-consensus</code> will
+not duplicate diffusion errors messages in the log, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4537" target="_blank" rel="noopener noreferrer">#4537</a>.</p><p>We fixed an issue which caused one of our tests to be flaky, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4515" target="_blank" rel="noopener noreferrer">#4515</a>.</p><p>We added cddl tests for <code>NodeToNodeVersionData</code> and <code>NodeToClientVersionData</code>:
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4540" target="_blank" rel="noopener noreferrer">#4540</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4544" target="_blank" rel="noopener noreferrer">#4544</a> (in review).</p><p>We wrote scripts which will help us release packages as well as verify that we
+released all the package necessary to build the newest set of packages,
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/4542" target="_blank" rel="noopener noreferrer">#4542</a>.</p><p>We renamed the consensus startup tracer and make sure it doesn&#x27;t log
+<code>ExitSuccess</code> exceptions, <a href="https://github.com/input-output-hk/ouroboros-consensus/pulls/71" target="_blank" rel="noopener noreferrer">consensus-#71</a>.</p><p>We reviewed PR which adds <code>RawBearer</code> API, <a href="https://github.com/input-output-hk/ouroboros-network/issues/4395" target="_blank" rel="noopener noreferrer">#4395</a>.</p><p>We made series of improvements to our CI:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4539" target="_blank" rel="noopener noreferrer">#4539</a>: we don&#x27;t need to install cryptographic libraries in CI;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4545" target="_blank" rel="noopener noreferrer">#4545</a>: Javier Sagredo (consensus) cleaned up CI after <code>consensus</code> moved
+to a new repo;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4546" target="_blank" rel="noopener noreferrer">#4546</a>: we switched to use <a href="https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue" target="_blank" rel="noopener noreferrer">GitHub merge queues</a>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4549" target="_blank" rel="noopener noreferrer">#4549</a>: we made it possible to trigger building haddocks manually;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4553" target="_blank" rel="noopener noreferrer">#4553</a>: we fixed and enhanced caching of building dependencies.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-28T00:00:00.000Z" itemprop="datePublished">April 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The networking team has released the following packages to <code>Hackage</code>:</p><ul><li><a href="https://hackage.haskell.org/package/io-classes" target="_blank" rel="noopener noreferrer"><code>io-classes</code></a>,</li><li><a href="https://hackage.haskell.org/package/io-classes-mtl" target="_blank" rel="noopener noreferrer"><code>io-classes-mtl</code></a></li><li><a href="https://hackage.haskell.org/package/io-sim" target="_blank" rel="noopener noreferrer"><code>io-sim</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-stm" target="_blank" rel="noopener noreferrer"><code>strict-stm</code></a>,</li><li><a href="https://hackage.haskell.org/package/strict-mvar" target="_blank" rel="noopener noreferrer"><code>strict-mvar</code></a></li></ul><p>We published an announcement <a href="https://engineering.iog.io/2023-04-14-io-sim-annoucement" target="_blank" rel="noopener noreferrer">blog post</a>.  We made progress
+also on another blog post which will describes the design of the P2P networking
+layer.</p><p>After moving <code>ouroboros-consensus</code> to its own repository, we made
+<code>ouroboros-network</code> compatible with <code>GHC</code> <code>9.4</code> and <code>9.6</code>.</p><p>We made <code>cardano-client</code> library independent of
+<code>ouroboros-consensus-diffusion</code>.</p><p>We prepared release of network packages for <code>cardano-node-8.0</code>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-log">Detailed log<a class="hash-link" href="#detailed-log" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros-Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>Compatibility with <code>io-classes-1.1.0.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4281" target="_blank" rel="noopener noreferrer">ouroboros-network#4281</a>.</li><li>Compatibility with <code>GHC</code> <code>9.4</code> and <code>9.6</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4527" target="_blank" rel="noopener noreferrer">ouroboros-network#4527</a>.</li><li><code>cardano-client</code> independent of <code>ouroboros-cosnensus-diffusion</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4526" target="_blank" rel="noopener noreferrer">ouroboros-network#4526</a>.</li><li>Release new versions of packages for <code>cardano-node-8.0</code>: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4532" target="_blank" rel="noopener noreferrer">ouroboros-network#4532</a>.</li><li>Galois Inc, has been making progress towards merging <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">ouroboros-network#4256</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><ul><li><code>io-classes-1.0.0.0</code>, and following up releases: <code>1.0.0.1</code> (<code>ghc-9.6</code>
+support), <code>1.1.0.0</code> (documentation fix).</li><li>Fixed timeouts and delays in <code>io-sim</code> in a series of PRs: <a href="https://github.com/input-output-hk/io-sim/pull/81" target="_blank" rel="noopener noreferrer">io-sim#81</a>,
+<a href="https://github.com/input-output-hk/io-sim/pull/82" target="_blank" rel="noopener noreferrer">io-sim#82</a>, <a href="https://github.com/input-output-hk/io-sim/pull/86" target="_blank" rel="noopener noreferrer">io-sim#86</a>, <a href="https://github.com/input-output-hk/io-sim/pull/87" target="_blank" rel="noopener noreferrer">io-sim#87</a>.</li><li>Renamed a module: <a href="https://github.com/input-output-hk/io-sim/pull/88" target="_blank" rel="noopener noreferrer">io-sim#88</a>.</li><li>Fixed a failing <code>registerDelayCancellable</code> test: <!-- -->[io-sim#80]<!-- -->.</li><li>Use GitHub merge queue in <code>io-sim</code> repository.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/io-sim/pull/83" target="_blank" rel="noopener noreferrer">io-sim#83</a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>Released <code>typed-protocols-0.1.0.4</code> which support <code>io-classes-1.1.0.0</code>:
+<a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/227" target="_blank" rel="noopener noreferrer">typed-protocols#227</a>.</li><li>Use GitHub merge queue in <code>typed-protocols</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/30" target="_blank" rel="noopener noreferrer">typed-protocols#30</a>.</li><li>CI: download <code>stylish-haskell</code>: <a href="https://github.com/input-output-hk/typed-protocols/pull/29" target="_blank" rel="noopener noreferrer">typed-protocols#29</a>.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-21-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-21T00:00:00.000Z" itemprop="datePublished">March 21, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the last spring we released <code>cardano-node-1.35.6</code> with dynamic P2P
+functionality.</p><p>We received reports from some SPOs who encountered problems with their non
+P2P block producing nodes not being able to connect to their P2P relay.  Karl
+Knutsson (from Cardano Foundation) reproduced this issue between two nodes (a
+non P2P and a P2P one) on mainnet.  Karl and the IOG Networking Team analysed
+it and found a bug in the legacy non p2p code.  The bug is only possible to
+trigger with a P2P node which is binding its outbound connection port to
+a fixed IP address and port (default in p2p).  A possible solution was found.
+For more information see <a href="https://github.com/input-output-hk/ouroboros-network/issues/4465" target="_blank" rel="noopener noreferrer">#4465</a>.</p><p>We released <code>cardano-ping-0.1.0.0</code> package to <code>CHaP</code>.  <code>cardano-ping</code> is no
+longer available as a standalone binary, but instead it will become part of
+<code>cardano-cli</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4664" target="_blank" rel="noopener noreferrer">#4664</a>)</p><p>We are testing <code>cardano-node</code> with peer sharing functionality (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">#4019</a>).</p><p>We are working on <em>eclipse evasion</em>.  We added new class of peers: big ledger
+peers to the outbound governor, implemented tests and fixed found issues
+(<a href="https://github.com/input-output-hk/ouroboros-network/pull/4462" target="_blank" rel="noopener noreferrer">#4462</a>).  We also made the information if a given peer plays the role of
+a big ledger peer to the mini-protocols.  This will allow to modify
+mini-protocol applications for such peers.   As part of this functionality we
+refactored some core types in the network code which simplifies exposed API.</p><p>Together with Moritz Angerman we started to update <code>io-sim</code> to <code>ghc-9.6.1</code> (see
+<a href="https://github.com/input-output-hk/io-sim/pull/73" target="_blank" rel="noopener noreferrer">#73</a>).</p><p>We merged a fix of configuration of accepted connections limit in
+<code>cardano-node</code> (see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">#4902</a>).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/network/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/network/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>24 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-02-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-02T00:00:00.000Z" itemprop="datePublished">March 2, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In the current sprint the networking team focused on fixing bugs and pushing
+forward implementation of eclipse evasion.  We also found a bug in our
+simulation testing setup (in integration of test node).  We also overviewed the
+work on extending handshake protocol which is delivered by Galois Inc.</p><p>We published <code>ouroboros-network-0.4.0.1</code> and
+<code>ouroboros-network-protocols-0.3.0.0</code> to <a href="https://github.com/input-output-hk/cardano-haskell-packages/pull/147" target="_blank" rel="noopener noreferrer">CHaP</a>.</p><p>We also fixed a bug in <code>cardano-node</code> which results in not being able to
+configure inbound connection limits, see <a href="https://github.com/input-output-hk/cardano-node/pull/4902" target="_blank" rel="noopener noreferrer">PR #4902</a>.</p><p>Together with Karl Knutsson (CF) we realised an issue in <code>cardano-cli</code>: it&#x27;s
+validation of DNS names, IP address &amp; ports when registering a stake pool
+should be more strict to protect against common mistakes which we identified on
+the chain.  See <a href="https://github.com/input-output-hk/cardano-node/issues/4929" target="_blank" rel="noopener noreferrer">issue #4929</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-work-log">Detailed work log<a class="hash-link" href="#detailed-work-log" title="Direct link to heading">​</a></h2><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> we fixed two bugs in peer state actions.  First one results in
+a busy loop if demotion from hot to warm times outs.  This busy loop is
+eventually exited when mux exits (we reported this in our previous report).
+This fix made it to <code>1.35.6</code> release as well.</p><p>In addition the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixes another bug which results in <code>hot -&gt; warm
+-&gt; hot</code> demotion / promotion busy loop.</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also fixed a bug in a node only used in simulation which
+resulted in not using <code>chain-sync</code> or <code>block-fetch</code> mini-protocols.  In the
+review process, we realised that the header-body split in the simulated node
+requires further work (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a>, which is under review).</p><p>The <a href="https://github.com/input-output-hk/ouroboros-network/pull/4385" target="_blank" rel="noopener noreferrer">PR #4385</a> also extend our generators, which together with the above fix,
+cover the <code>hot -&gt; warm -&gt; hot</code> demotion / promotion busy loop.</p><p>In <a href="https://github.com/input-output-hk/ouroboros-network/pull/4419" target="_blank" rel="noopener noreferrer">PR #4419</a> we introduce a <code>ChainDB</code> for our simulation node, which plays
+similar role to <code>ChainDB</code> in the <code>ouroboros-consensus</code>: a persistent (across
+simulated restarts) store of blocks which does chain selection.  This ensures
+that the simulated node is using <code>block-fetch</code> to download blocks announced by
+<code>chain-sync</code> mini-protocol.</p><p>We also made progress with reviewing <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">PR #4019</a> - peer sharing.</p><p>We also fixed <a href="https://github.com/input-output-hk/ouroboros-network/issues/4370" target="_blank" rel="noopener noreferrer">issue #4370</a> - a connection manager test failure, see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4384" target="_blank" rel="noopener noreferrer">PR #4384</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-17-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-17T00:00:00.000Z" itemprop="datePublished">February 17, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Recently QA found a bug in P2P code, which results in busy loops.  We added one
+fix to <code>1.35.6</code> release, another one will likely be part of next release.  The
+first one is already included in <code>ouroboros-network-0.3.0.1</code> release.  These
+bugs could only affect nodes which are out of sync and thus should not impose
+risk on well maintained nodes on mainnet.  We also advertise to deploy at most
+one of the relays as a P2P node, which shields from possible consequences.</p><p>We recently finished design phase of eclipse evasion and we started
+implementing it (see <a href="https://github.com/orgs/input-output-hk/projects/19/views/16?pane=issue&amp;itemId=19819205" target="_blank" rel="noopener noreferrer">issue #3886</a> for progress).</p><p>Galois finished implementing Handshake extension which will allow to query
+network protocol versions (see <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">pr #4256</a>).</p><p>We also recently released a newer set of network packages to be integrated with
+<code>cardano-node</code> <code>master</code> branch, this includes:</p><div class="codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-text codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token plain">* monoidal-synchronisation-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* cardano-client-0.1.0.2</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* network-mux-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-api-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-protocols-0.2.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-testing-0.2.0.1</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-mock-0.1.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-framework-0.3.0.0</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">* ouroboros-network-0.4.0.0 (it doesn&#x27;t not yet include the fix we included</span><br></span><span class="token-line" style="color:#393A34"><span class="token plain">  in `0.3.0.1`)</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-12T00:00:00.000Z" itemprop="datePublished">December 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-28T00:00:00.000Z" itemprop="datePublished">November 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG&#x27;s benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We&#x27;ve seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don&#x27;t expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;kind&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;PeerStatusChangeFailure&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;peerStatusChangeType&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;reason&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;TimeoutError&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don&#x27;t try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There&#x27;s a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/network/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/network/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>24 posts tagged with &quot;network&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-11-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-11T00:00:00.000Z" itemprop="datePublished">November 11, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint we got a performance report of P2P performance testing cluster
+(which consists of 50 nodes).  There is a performance regression in the header
+notification metric.  The P2P cluster is constructed with the same
+topology as the non-p2p reference one this indicates some regression which
+needs to be further investigated.  This poses a risk for releasing P2P.</p><p>We also continued to work on peer sharing: <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">pull #4019</a>.</p><p>We continued working on dynamic block production which is required for P2P
+release for BP nodes: <a href="https://github.com/input-output-hk/ouroboros-network/issues/3159" target="_blank" rel="noopener noreferrer">pull #3159</a>.</p><p>We simplified the P2P topology format: <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>, <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">pull #3888</a>.</p><p>We added a new trace point for asynchronous demotions of local peers with
+<code>Warning</code> severity.  This trace is <strong>important</strong> for SPOs.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detail-description">Detail description<a class="hash-link" href="#detail-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance-regression">Performance regression<a class="hash-link" href="#performance-regression" title="Direct link to heading">​</a></h3><p>Below we include a graph which shows the performance regression of the P2P code base vs non P2P.</p><img loading="lazy" src="/cardano-updates/assets/images/2022-11-11-noticed-headers-55bb0b4d41e8f0cff0066e1bec91bdd2.png" class="img_ev3q"><p>On the <code>x</code> axis is time in seconds which measures the delay from the start of
+the slot to when a header was received. The <code>y</code> axis is the percentile of nodes
+that received a header.  We are currently investigating possible causes of the
+regression. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-p2p-topology-form">New P2P topology form<a class="hash-link" href="#new-p2p-topology-form" title="Direct link to heading">​</a></h3><p>The new topology file format is described in this <a href="https://github.com/input-output-hk/cardano-node/issues/4559" target="_blank" rel="noopener noreferrer">issue #4559</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing-improvements">Tracing improvements<a class="hash-link" href="#tracing-improvements" title="Direct link to heading">​</a></h3><ul><li>We improved a handshake error reporting, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4136" target="_blank" rel="noopener noreferrer">pull #4136</a></li><li>We added <code>TraceDemoteLocalAsynchronous</code> rendered as <code>DemoteLocalAsynchronous</code>
+in <code>json</code> format, <a href="https://github.com/input-output-hk/ouroboros-network/pull/4127" target="_blank" rel="noopener noreferrer">pull #4127</a>.  Such demotions should be investigated by the
+pool operator.  They can indicate a problem in the deployed system, but also
+they could indicate a remote problem in arranged connections with other SPOs.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source-improvements">Open Source Improvements<a class="hash-link" href="#open-source-improvements" title="Direct link to heading">​</a></h3><p>We improved documentation of <code>io-sim</code> and <code>typed-protocols</code> for open-source
+contributors and/or maintenance tasks: <a href="https://github.com/input-output-hk/typed-protocols/pull/22" target="_blank" rel="noopener noreferrer">pull #22</a>, <a href="https://github.com/input-output-hk/io-sim/pull/45" target="_blank" rel="noopener noreferrer">pull #45</a>, <a href="https://github.com/input-output-hk/io-sim/pull/48" target="_blank" rel="noopener noreferrer">pull #48</a>. </p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High-level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The team has focused on debuging &amp; fixing bugs for the <strong>P2P single relay release</strong>, which included</p><ul><li>diagnosing, fixing and writing tests for a bug in <code>peer-state-actions</code> which
+fortunately hasn&#x27;t been released;</li><li>diagnosing &amp; preventing misconfiguration of DNS</li></ul><p>We also focused on developing <strong>peer sharing</strong>.  We also held a session with
+the scientists on eclipse evasion.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="p2p-network-stack">P2P Network Stack<a class="hash-link" href="#p2p-network-stack" title="Direct link to heading">​</a></h3><p>During the past two weeks the team focused on p2p single relay release and peer
+sharing.  We found and fixed an important bug recently introduced in one of the
+components of p2p networking stack (fortunately never released).  Together with
+a fix, we designed a unit test diffusion simulation as well as quickcheck
+property test (both could reproduce it). We also changed the code in a way that
+if such a bug is reintroduced in the future, it will be obvious to diagnose.
+For more see:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4067" target="_blank" rel="noopener noreferrer">ouroboros-network#4067</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4086" target="_blank" rel="noopener noreferrer">ouroboros-network#4086</a></li></ul><p>Initial benchmarking run of the P2P code was executed.  The results where
+unlike what we see on the mainnet.  We found a possible misconfiguration of the
+cluster (caused by 0 TTL on domain names), which could be the direct cause of
+it.  We wrote a PR which rules out such misconfiguration.  We are awaiting on
+the next benchmarking results.  See more at:</p><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4106" target="_blank" rel="noopener noreferrer">ouroboros-network#4106</a></p><p>We also started working on P2P single relay release.  The PR
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4120" target="_blank" rel="noopener noreferrer">ouroboros-network#4120</a>
+includes <em>108</em> patches cherry-picked from the <code>master</code> branch.  We started
+working toward integration these changes against the release branch of
+<code>cardano-node</code>.  Early next week we ought to be able to have an early version
+of <code>cardano-node</code> with <em>non experimental P2P support</em>!</p><p>For more detailed release plan please see <a href="https://github.com/input-output-hk/ouroboros-network/issues/3888" target="_blank" rel="noopener noreferrer">P2P - Single
+Relay</a>
+issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus">Consensus<a class="hash-link" href="#consensus" title="Direct link to heading">​</a></h3><p>We identified and fixed missing error reporting in consensus
+initialisation phase.  See more at
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">ouroboros-network#4015</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><p>We also made changes in <code>cardano-node</code> in order to give better experience for
+node operators.  This includes updating severities of some of the traces as
+well as implementing new format of the p2p topology file.  For more see:</p><ul><li><a href="https://github.com/input-output-hk/cardano-node/pull/4563" target="_blank" rel="noopener noreferrer">cardano-node#4563</a>.</li><li><a href="https://github.com/input-output-hk/cardano-node/pull/4561" target="_blank" rel="noopener noreferrer">cardano-node#4561</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We continued working on implementation of peer sharing.  We have an early
+implementation which will be reviewed and analysed in next weeks.  We started
+working on <code>cardano-node</code> integration.  We need
+<a href="https://github.com/input-output-hk/cardano-node/pull/4392" target="_blank" rel="noopener noreferrer">PR #4392</a> to be merged
+before such integration will be able to land in <code>cardano-node</code>, although this
+is <em>not blocking</em> us currently.  See more at:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">ouroboros-network#4019</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="eclipse-evasion">Eclipse Evasion<a class="hash-link" href="#eclipse-evasion" title="Direct link to heading">​</a></h3><p>We held a session which included Alexander Russel, Sandro Coretti-Drayton and
+Nick Frisby from the consensus team.  We discussed high lever design of the
+eclipse evasion scheme, which is important for the design and implementation of
+<code>ouroboros-genesis</code>.  We got a positive feedback from the researchers.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>In this period we made little progress towards releasing <code>IO-Sim</code> on Hackage.
+A single <a href="https://github.com/input-output-hk/io-sim/pull/32" target="_blank" rel="noopener noreferrer">PR</a> which added
+a few missing instances of the <code>STM</code> monad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-source">Open Source<a class="hash-link" href="#open-source" title="Direct link to heading">​</a></h3><p>We made sure the CI runs for PRs which comes from forks (which is important to
+accept contributions from 3rd parties).</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="mithril-cardano-integration">Mithril Cardano Integration<a class="hash-link" href="#mithril-cardano-integration" title="Direct link to heading">​</a></h3><p>We held initial discussions with Arnaud Bailly about possible path to integrate
+mithril to <code>cardano-node</code> and take advantage of the <code>ouroboros-network</code>
+diffusion layer.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-09-27-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-09-27T00:00:00.000Z" itemprop="datePublished">September 27, 2022</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="network-update">Network Update<a class="hash-link" href="#network-update" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-network">Ouroboros Network<a class="hash-link" href="#ouroboros-network" title="Direct link to heading">​</a></h3><ul><li>We finished high and low level <em>peer sharing</em> design. See
+<a href="https://github.com/input-output-hk/ouroboros-network/wiki/Peer-Sharing-Implementation-Plan" target="_blank" rel="noopener noreferrer">Peer Sharing Implementation Plan</a></li><li>We started working on low-level design of <em>eclipse evasion</em> (work in
+progress).</li><li>We decided to use <strong>peer sharing</strong> instead of overloaded and ambiguous <em>gossip</em> term.
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3980" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#3980</a></li><li>We fixed technical dept
+<a href="https://github.com/input-output-hk/ouroboros-network/issues/3905" target="_blank" rel="noopener noreferrer">issue input-output-hk/cardano-node#3905</a> in
+the simulation testing of diffusion
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4004" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4004</a></li><li>We deployed all our nodes using our new nix based deployment architecture.
+When deploying we found an issue in the
+<a href="https://github.com/input-output-hk/cardano-node/issues/3752" target="_blank" rel="noopener noreferrer"><code>RTView</code></a>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ouroboros-consensus">Ouroboros Consensus<a class="hash-link" href="#ouroboros-consensus" title="Direct link to heading">​</a></h3><ul><li>Recently we found out that the consensus does not log exceptions thrown during
+intiialisation.  This was fixed in
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/4015" target="_blank" rel="noopener noreferrer">PR input-output-hk/ouroboros-network#4015</a>
+As part of this pull request we also changed that all exceptions rethrown by
+the connection handler thread are wrapped in <code>ExceptionInHandler</code>.</li></ul><h4 class="anchor anchorWithStickyNavbar_LWe7" id="some-older-items-which-were-not-announced">Some older items, which were not announced<a class="hash-link" href="#some-older-items-which-were-not-announced" title="Direct link to heading">​</a></h4><ul><li>We identified and fixed an issue related to socket activation (socket options
+where not set for sockets passed through socket activation).
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3979" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#3979</a>
+This fix will be released in the next <code>cardano-node</code> release.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano Node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>We extended the NixOs service module so that one can modify <code>socketPath</code>,
+<code>runtimeDir</code>, <code>databasePath</code>, <code>traceSocketPathAccept</code>,
+<code>traceSocketPathConnect</code> and <code>stateDir</code> options.
+<a href="https://github.com/input-output-hk/cardano-node/pull/4196" target="_blank" rel="noopener noreferrer">PR input-output-hk/cardano-node#4196</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="io-sim">IO-Sim<a class="hash-link" href="#io-sim" title="Direct link to heading">​</a></h3><p>We resolved a number of issues before release of <code>io-sim</code> on hackage:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2797" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2797</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2650" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2650</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/3436" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#3436</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2588" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2588</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2587" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2587</a></li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/2586" target="_blank" rel="noopener noreferrer">issue input-output-hk/ouroboros-network#2586</a></li></ul><p>See <a href="https://github.com/input-output-hk/io-sim/pull/24" target="_blank" rel="noopener noreferrer">PR #24</a>.</p><p>We also improved experience for contributors of <code>io-sim</code> and <code>typed-protocols</code> by adding issue templates:</p><ul><li><a href="https://github.com/input-output-hk/io-sim/pull/25" target="_blank" rel="noopener noreferrer">PR input-output-hk/io-sim#25</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="typed-protocols">Typed Protocols<a class="hash-link" href="#typed-protocols" title="Direct link to heading">​</a></h3><ul><li>We pushed a branch which identifies a GHC quirk:
+<a href="https://github.com/input-output-hk/typed-protocols/tree/coot/typed-protocols-rewrite-StateToken-problem" target="_blank" rel="noopener noreferrer">coot/typed-protocols-rewrite-StateToken-problem</a>.
+That&#x27;s too be resolved in order to push forward review of the redesign in
+<a href="https://github.com/input-output-hk/typed-protocols/pull/3" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#3</a>.</li><li>As for <code>io-sim</code>, we wrote issue templates:
+<a href="https://github.com/input-output-hk/typed-protocols/pull/11" target="_blank" rel="noopener noreferrer">PR input-output-hk/typed-protocols#11</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="input-endorsers-simulation">Input Endorsers Simulation<a class="hash-link" href="#input-endorsers-simulation" title="Direct link to heading">​</a></h3><p>New features include:</p><ul><li><p>Histograms of block arrival frequency, for both network (inbound) and CPU
+(block validation). This is interesting to check that we&#x27;re not overloading
+the CPU block validation capacity, or network link capacity. Or alternatively
+to observe the behaviour in an overload situation if we set the block
+generation rate high enough.</p></li><li><p>Pie chart of utilisation of TCP links. This shows how small a fraction of
+links are being used at any one time, and shows that once the system &quot;warms
+up&quot; and is operating stably, most block delivery is ballistic.</p></li><li><p>Showing off the new screen layout combinators, that let us put multiple
+charts, titles etc on screen at once and scale them to whatever screen or
+video resolution we like without having to tweak numbers (this example is
+scaled to fit 1080HD video resolution).</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-08-12T00:00:00.000Z" itemprop="datePublished">August 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><p>The networking team took an active part in the project iteration (PI) planning
+session, see cardano-node <a href="https://github.com/orgs/input-output-hk/projects/39" target="_blank" rel="noopener noreferrer">backlog</a> for detailed
+outcomes.</p><ul><li><p>We started working on a detailed design / implementation plan for gossip.</p></li><li><p>We merged <a href="https://github.com/input-output-hk/ouroboros-network/pull/3859" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3859</a> which
+sets the ouroboros-network repository for the single relay release.</p></li><li><p>We identified a bug in the network simulator, which is fixed in the
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3852" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3852</a>.
+The above PR was reviewed.</p></li><li><p>We set the tracing configuration for nodes which we deploy and fixed and
+identified some deployment hiccups.  We identified some bugs in the RT view
+which were registered by the maintainers.
+<a href="https://github.com/input-output-hk/ouroboros-network-ops/pull/4" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network-ops#4</a></p></li><li><p>We fixed typos in network-mux library:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3921" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3921</a></p></li><li><p>For easy of debugging we renamed a trace point:
+<a href="https://github.com/input-output-hk/ouroboros-network/pull/3922" target="_blank" rel="noopener noreferrer">input-output-hk/ouroboros-network#3922</a></p></li><li><p>Duncan iterated on his simulation / visualisation.  He also was able to
+identify and fix a bug in the simulator.  The simulation contains 50 nodes.
+Dashed lines indicate and established connection, while solid lines indicate
+a TCP connection with fully open TCP window.</p></li></ul><div style="width:640px;height:360px"></div></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/network/page/4"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;open-source&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-31-open-source">Open-Source Team</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-04T00:00:00.000Z" itemprop="datePublished">November 4, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High Level Summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>We&#x27;ve been working toward publishing <em>Cardano Backlog</em>, currently its in
+review by the IOG communication team.</li><li>We identified a number of libraries which can be published.</li><li>We setup and enhanced <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">cardano-updates</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-description">Detailed description<a class="hash-link" href="#detailed-description" title="Direct link to heading">​</a></h2><p>I am glad to announce that I was given the role of open-source advocate for
+cardano project.  In last few weeks we were making steps towards publishing our
+backlog.  It&#x27;s currently under review by the communication team, although most
+of the issues are already visible across various repositories.</p><p>The open-source initiatives have their own
+<a href="https://github.com/orgs/input-output-hk/projects/60" target="_blank" rel="noopener noreferrer">project</a>.  It is set up
+to help us track our major open-source activities.  Right now there are two
+work streams:</p><ul><li>the work on <a href="https://input-output-hk.github.io/cardano-engineering-handbook/" target="_blank" rel="noopener noreferrer"><em>Cardano Engineering Handbook</em></a>;</li><li>libraries to be release on <a href="https://hackage.haskell.org/" target="_blank" rel="noopener noreferrer">Hackage</a> or <a href="https://crates.io" target="_blank" rel="noopener noreferrer">crates.io</a>.</li></ul><p>We identifies a number of libraries across all the teams which contribute to
+<em>Cardano</em> which we would like publish to publish, see the following
+<a href="https://github.com/orgs/input-output-hk/projects/60/views/3" target="_blank" rel="noopener noreferrer">link</a>.  Arnauld Bailly recently published
+<a href="https://hackage.haskell.org/package/quickcheck-dynamic" target="_blank" rel="noopener noreferrer"><code>quickcheck-dynamic</code></a>
+library on Hackage.  The networking team is slowly progressing towards
+publishing <a href="https://github.com/input-output-hk/io-sim" target="_blank" rel="noopener noreferrer">io-sim</a> and related packages, checkout the progress
+<a href="https://github.com/orgs/input-output-hk/projects/19/views/24" target="_blank" rel="noopener noreferrer">here</a>.</p><p>Thanks to Arnaud Bailly our <a href="https://input-output-hk.github.io/cardano-updates" target="_blank" rel="noopener noreferrer">Cardano Updates</a> website has
+a new look &amp; feel!  It&#x27;s using <a href="https://docusaurus.io" target="_blank" rel="noopener noreferrer">docusaurus.io</a>.</p><p>Christian Taylor carried recently a detailed analysis of our open-source
+repositories.  He collected many interesting metrics, which allows us to see
+where we need to improve as an open-source project to make the Cardano project
+and many smaller related libraries which we maintain be more open and available
+for open-source contributors.</p><p>The graph below shows which documents the 55 most important Cardano
+repositories are missing the most:
+<img loading="lazy" alt="Documentation Adoption" src="/cardano-updates/assets/images/doc-adoption-cd944582f02809777c58be53e13453c5.png" width="1493" height="716" class="img_ev3q">
+You can expect we will improve in these metrics in the coming weeks.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/open-source">open-source</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>25 posts tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-12-04T00:00:00.000Z" itemprop="datePublished">December 4, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.7.0</code>. Also, we performed the first-ever Conway benchmarks.</li><li>Development: Conway capability of our workload generator has been implemented and merged to <code>master</code>.</li><li>Infrastructure: Changes to our workbench facilitating easy access and archiving of raw benchmarking data.</li><li>Tracing: Quality-of-life improvements to tracing output and addition of a test suite.</li><li>Nomad cluster: Expand the list of benchmarking profiles that can be run on Nomad; generalize cluster topology generation.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>A full set of benchmarks for node <code>8.7.0</code> has been performed, with the focus of enabling the next mainnet release. We&#x27;ve measured slight performance improvements of <code>8.7.0</code> over <code>8.6.0</code>, and can confirm no regressions have been introduced.</p><p>Furthermore, we&#x27;ve run system integration level benchmarks in the Conway era for the first time, on the same node version.
+Only Babbage-compatible workloads have entered comparison as to ascertain performance consequences of only changing the ledger version, and nothing else. The results are very promising, as we could show that switching ledger versions for existing workloads does not come with a performance penalty.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Our transaction generator has been extended to be able to submit all present benchmarking workflows in the Conway era.
+Currently, we&#x27;re looking into adding Conway-exclusive features, such as <code>DRep</code> registration. Those would be submitted at the very beginning of a run, as we&#x27;re interested in seeing potential performance implications of maintaining <code>DRep</code> sets of varying size in ledger. Furthermore, this will serve as the basis for future development Conway-exclusive workloads, such as governance actions or vote tallying.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As our workbench will be pivotal in orchestrating and organizing benchmarking runs on the Nomad cloud backend, we&#x27;ve
+improved how raw benchmark data is tagged, which metadata is documented in an automated manner. This enhances both access to existing run sets, as well as maintaining an archive for benchmarking data.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The new tracing system is currently receiving usability improvements as we&#x27;re reworking the output of several trace messages.
+Additionally, we&#x27;re setting up a rigorous test suite to provide safety for future development of and component integration inte the system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;ve been working on adapting various benchmarking workloads, which are defined by our workbench&#x27;s profiles, to running on the new infrastructure. This mainly concerns a workload utilizing Plutus, as well as peer-to-peer flavoured workloads. Furthermore, we&#x27;re implementing a solution to create all possible cluster topologies algorithmically, instead of still using fixed literal definitions for some cases.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-17-performance-and-tracing">Performance &amp; Tracing Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-17T00:00:00.000Z" itemprop="datePublished">November 17, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Release benchmarking for node <code>8.6.0</code> as well as benchmarks scrutinizing GHC versions and the new tracing system.</li><li>Development: PlutusV3 capability of our workload generator has been implemented.</li><li>Tracing: First round of optimization of the <code>cardano-tracer</code> service has completed, awaiting validation.</li><li>Nomad backend: A significant PR has landed addressing automation features and debugging capabilites.</li><li>Workbench: Configurable remote environments and improvements to run documentation have been merged to <code>master</code>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analyzed a full set of benchmarks for node <code>8.6.0</code>, both in comparison to recent release tags
+and mainnet version <code>8.1.2</code>. A lot of development work has entered the system since then, so it is crucial
+we can rule out any potential performance risks for the next mainnet release.   </p><p>Additionally, we&#x27;ve been benchmarking GHC9.6.3 builds of <code>cardano-node</code>. Overall, we&#x27;ve observed reliable optimization behaviour by that compiler version - which is much more in line with expectations than what we&#x27;ve seen on GHC9.2.7. Getting evidence on how predictable (and malleable, by code annotations) performance is when building with a certain compiler version is essential for settling on a version as supported release platform. </p><p>A last set of benchmarks was dedicated to the new tracing system with node <code>8.6.0</code>. We were able to show that
+there is no performance risk to enabling the new system, even when forwarding all trace messages to a <code>cardano-tracer</code>
+service on the receiving end. Key metrics for block forging, as well as block diffusion, did not exhibit any regression.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>For future benchmarks to be built around PlutusV3, we&#x27;ve equipped our transaction generator with basic integration and tests for the upcoming Plutus version. This enables us to target the new cost model and potential changes
+to the execution budgets by developing specialized workloads.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The <code>cardano-tracer</code> service has received its first batch of optimizations. Profiling output is promising; to measure
+performance for a long service run time, we&#x27;re currently equipping the service binary with the same capability to
+emit regular resource traces as <code>cardano-node</code>. Analysis of those will be the basis for validating this and possible future optimization efforts.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Many improvements for the nomad backend have been implemented and merged to <code>master</code>. This encompasses a unified naming schema for all nomad profiles, improved internal management of cluster topology, a more fine-grained healthcheck service,
+more detailed automated documentation of underlying hardware, as well as lazy resource release. The latter enables
+our team to investigate and debug interrupted runs for the exact moment and in the exact cluster state a potential failure occurred.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="workbench">Workbench<a class="hash-link" href="#workbench" title="Direct link to heading">​</a></h3><p>Our performance workbench has seen upgrades in documenting and reporting <code>cardano-node</code> builds. This ranges from capturing package versions and commit ids of key dependencies, to querying a deployed node for its build compiler.
+When alternating between compiler versions and benchmarking custom built branches, automating such documentation is essential.  </p><p>Furthermore, the workbench is now able to access several remote deployments on all active clusters. This allows for fetching data, analyzing, comparing and reporting on all benchmarks from just one centralized workbench instance.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-06-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-06T00:00:00.000Z" itemprop="datePublished">October 6, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Continued benchmarking of UTxO-HD and performed benchmarks for the new tracing system.</li><li>Consensus QTAs: Our protoype approach is applied to potential regression fixes with GHC 9.2.7.</li><li>Development: We&#x27;ve developed strategies for future benchmarks of PlutusV3 and UTxO-HD&#x27;s on-disk backing store.</li><li>Tracing: The machine-readable tracer configuration has been merged. Optimization of <code>cardano-tracer</code> started.</li><li>Nomad backend: Ongoing variance analysis and refined cluster topology.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Performing and analyzing benchmarks for the UTxO-HD feature is an ongoing effort; we can reliably assess the
+performance of the in-memory backing store and evaluate possible optimizations (or regressions) for it.  </p><p>Furthermore, benchmarks of our new tracing system after several rounds of optimization have been performed. The results
+show all key metrics now being unaffected by the choice of tracing system (legacy or new) - with the new system being able to provide more features and flexibility in comparison. The benchmarks also highlighted further points for optimization, with the focus now on the <code>cardano-tracer</code> service.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="consensus-qtas">Consensus QTAs<a class="hash-link" href="#consensus-qtas" title="Direct link to heading">​</a></h3><p>The Quantitative Timeliness Agreements (QTA) prototype is being used in coordination with Consensus and DevX to validate a series of patches that address optmization opportunities which GHC8.10 seizes, but GHC9.2 misses. The
+feedback from this approach is much more immediate than running benchmarks at system integration level. But once we eventually do, we expect to reproduce the relevant observations - which would mean a big step towards maturing the prototype.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="development">Development<a class="hash-link" href="#development" title="Direct link to heading">​</a></h3><p>Benchmarking UTxO-HD&#x27;s on-disk backing store needs special attention: in virtualized environments, disk I/O is not a reliable metric as it passes several layers of indirection. As this is the very metric which will influence overall performance of this UTxO-HD flavour, we developed a plan to monitor such nodes, connected to a running network, on dedicated hardware - having direct SSD access. Replicating this setup for an entire benchmarking cluster of such nodes will be a future effort.  </p><p>PlutusV3 will come with new builtins and a new cost model. It will take a specialized benchmark to ascertain the soundness of that model running a full cluster of nodes, possibly stressing expensive builtins. At the same time,
+we&#x27;d like to validate the many improvements that have gone into the Plutus evaluator.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The focus for further optimization of the new tracing system has shifted to <code>cardano-tracer</code> - the service
+receiving and processing traces from one (or more) nodes. Whilst undisputed that the code living in <code>cardano-node</code> is
+more performance critical, the receiving service must still minimize its resource footprint. Moreover, it can
+generate load for a running node when querying data points from it - which calls for tight control of that mechanism and its possible configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Variance analysis of new nomad backend has revealed a necessary adjustment of the cluster&#x27;s topology. We repeated
+the same analysis and now see even better confidence in the measurements taken with nomad. This concludes the work on the backend proper for the time being. The last steps before production use will focus on the interface between backend and our workbench, which provides all high-level benchmark definitions and analysis machinery.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-22-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-22T00:00:00.000Z" itemprop="datePublished">September 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed both low-level network and high-level variance analysis of our benchmarking clusters.</li><li>Infrastructure: Our reporting pipeline was adjusted to classify various workloads easily reducing rework time.</li><li>Tracing: Work on machine-readable tracing of tracer configuration is ongoing.</li><li>Nomad backend: We&#x27;ve been able to eliminate several possible confounders on the nomad cluster.</li><li>Team: We&#x27;re currently onboarding a new team member: Welcome to Cardano Performance &amp; Tracing, Baldur Blöndal!</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of the effort to bring the Nomad backend into production use, we&#x27;ve been equipping both that and the existing benchmarking
+backend with means to measure and document network latency for each run. Furthermore we&#x27;ve implemented means to
+capture TCP packets for a limited time window during a benchmarking run - which will allow us to spot differences
+in the behaviour of the underlying networking stack at OS level.  </p><p>Additionally, we&#x27;re running variance analysis in parallel on both backends to ascertain confidence in metrics originating from either. We&#x27;ve concluded that baseline profile runs aren&#x27;t directly comparable between the two, so we decided
+to compare standard deviations instead to validate the measurements from nomad.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>Reporting on benchmarks does require human time and effort to rework the final document. Improvements to the reporting pipeline
+have been merged to <code>master</code>. They reduce the time necessary to do so by various changes to the template and the workload classification logic in analysis.  </p><p>Beyond that, we&#x27;ve looked into issues where services would quit with an unjustified exit failure upon shutdown - under rare circumstances. By reworking shutdown logic for <code>trace-dispatcher</code> and <code>tx-generator</code> we were able to address those issues.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>After various steps in constructing a configuration upon node startup, it is vital to document
+which runtime configuration the node arrived eventually. We&#x27;re working on providing a machine-readable JSON/YAML
+trace message for that purpose.  </p><p>This will facilitate hot-reloading a node&#x27;s tracer configuration in the future: users will be able to take such a trace message, apply their intended change and hot-reload it immediately into the node. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As with the existing benchmarking cluster, nomad is currently under scrutiny with regard to the reliability of metrics it
+produces, as well as the behaviour of its OS-level network stack. For instance, differing kernel versions can have an
+impact on our measurements, as we&#x27;d be basically using two different instruments to take them.  </p><p>Along the way we&#x27;ve already been successful in eliminating some possible confounders that had been introduced by the nomad service
+or the slightly different system architecture of the new cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-team-member">New team member<a class="hash-link" href="#new-team-member" title="Direct link to heading">​</a></h3><p>Baldur Blöndal is an extremely capable and experienced Haskell developer. Also, he&#x27;s an excellent fit for our existing team.
+So I&#x27;m very pleased to welcome him onboard with IOG, and with Performance &amp; Tracing. He will be working on <code>cardano-tracer</code>, the component receiving, processing and making available node traces and metrics.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-07-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-07T00:00:00.000Z" itemprop="datePublished">September 7, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed feature benchmarks for both UTxO-HD and the current P2P stack.</li><li>Infrastructure: Various improvements of our analysis pipeline have been merged to <code>master</code>, supporting safe log truncation.</li><li>Tracing: Namespace consistency checks have been merged to <code>master</code> along with a curated configuration for benchmarking.</li><li>Nomad backend: We&#x27;re productively using the new backend to measure new vs. legacy tracing system, adding many quality-of-life improvements.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve completed various runs and analyses targeting two distinct features of the node: UTxO-HD and Peer2Peer.  </p><p>With our UTxO-HD benchmark we could clearly localize one point where this new way of maintaining ledger state is still costly, but at the same time confirm that in basically all other aspects UTxO-HD makes no difference in performance.  </p><p>The Peer2Peer benchmarks focused on the effects that enabling this feature on a block producing node has on propagation times, as well as scrutinized a proposed change to the Peer2Peer network stack.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As a result of optimizing in-memory representation of log objects, which are constructed from a node&#x27;s traces, we can now analyse runs that last longer in total. For runs that exceed their expected duration, analysis now supports a truncation
+operation that keeps the interdependencies of block events intact.  </p><p>Truncation might happen at a slightly different point
+in time - and therefore in its log object stream - for each node in the cluster. An additional step validating the block hash timeline of the cluster has been implemented for the pipeline. It provides early feedback on whether a specific truncation will lead to a valid full analysis, which requires much more time.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Consistency checking of namespace implementation and configuration when using the new system has been completed.
+This feature enables feedback on when tracer implementation details in some component might have changed. It&#x27;s also able to detect when a configuration used for operating a <code>cardano-node</code> shows inconsistencies with the namespaces the system provides - and hence needs attention.  </p><p>Furthermore, we&#x27;ve created a fine-grained configuration of the new system that caters to benchmarking&#x27;s need of very many
+detailed trace messages. It&#x27;s aimed at mirroring the same amount of trace messages, and information, we&#x27;re seeing from our usage of the legacy system; an important step in making benchmarks between systems comparable.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new backend is currently being used for further validation with regard to the existing cluster. Additionally, we&#x27;re using it in production mode to comparatively benchmark both tracing systems after merging past month&#x27;s optimizations - which is the
+first real-life application of the nomad cluster. Hands-on experience in that phase translates into many small improvements which can be immediately applied to enhance user experience for the new backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/performance-tracing/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>25 posts tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-24-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-24T00:00:00.000Z" itemprop="datePublished">August 24, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: Benchmarking node version <code>8.2.1</code> has concluded. Additionally we&#x27;re developing benchmarking setups for GHC9.6 and UTxO-HD.</li><li>Infrastructure: Our analysis pipeline has received improvements reducing memory footprint.</li><li>Tracing: Another batch of optimizations for the new tracing system has been merged; work on namespace consistency guarantees is ongoing.</li><li>Nomad backend: We&#x27;re performing and analysing various runs for validation purposes on the new hardware cluster.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>We&#x27;ve performed and analysed the benchmarks for the <code>8.2.1</code> version of <code>cardano-node</code> as part of our release benchmarking cycle.  </p><p>Setting up cluster benchmarks requires completing full system integration. This applies to both supporting a new build platform, as is GHC9.6, as well as targeting a specific feature, like a UTxO-HD enabled node. Currently, we&#x27;re working on respective integrations on both those paths.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>As cluster runs increase in duration, more and more data is accumulated for analysis. Batch analysis mode needs all data to be held
+in memory, which wouldn&#x27;t fit anymore even on a 64GB RAM machine. Changes to the in-memory data representation improving on compactness were able to reduce the RAM requirements of our analysis pipeline.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The next portion of optimizations has been completed and merged to <code>master</code>, getting rid of Haskell&#x27;s native <code>String</code> representation on critical code paths. This concludes the optimization phase of the new tracing system for all its components used by <code>cardano-node</code>.  </p><p>The implementation for validation of consistent naming and configuration is ongoing. We&#x27;re splitting out everything that&#x27;s verifiable at compile time into a seperate test case which we hope to integrate into CI - leaving only configuration constraints to be verified at or before node startup.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The verification phase of the nomad cloud backend is ongoing. We&#x27;re able to perform full runs on the new hardware cluster
+and porting profiles and configurations from the legacy one. The goal is to reproduce with confidence known regressions, or improvements, between runs performed on the legacy cluster and runs performed with the new backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-11-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-11T00:00:00.000Z" itemprop="datePublished">August 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve concluded benchmarking node version <code>8.2.0</code>.</li><li>Tracing: Optimization of the new tracing system has been merged; we&#x27;re currently working on self-documenting tracing configuration.</li><li>Nomad backend: A PR that makes our backend take advantage of added flexibility of the new hardware cluster has been merged.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As part of our release benchmarking cycle, we&#x27;ve completed and analysed the runs for the <code>8.2.0</code> version of <code>cardano-node</code>. In addition to the adjustment of sanity checks in our automation, we had to implement small changes in the analysis pipeline as well to accomodate the new version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>A significant amount of optimizations for the new tracing system has finally been merged to <code>master</code>. At the moment,
+we&#x27;re working on having a trace message self-document the final tracing configuration of a running node. Apart from adding
+insight into the system, this feature also aims at making future hot reloading of tracing configuration explicit and straightforward.  </p><p>Furthermore, we&#x27;re setting up a final round of system integration level benchmarks comparing new against legacy tracing.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The new hardware cluster permits greater flexibility as far as SSH access is concerned. By using nomad for a consistent
+and reliable deployment, but taking advantage of direct connections for healthchecks and data transfer we believe we were
+able to reduce overall network latency in the nomad cluster. This improves confidence when capturing all network related measurements during our benchmarks.  </p><p>A PR that adds these capabalities to our nomad backend - along with very many quality-of-life improvements - has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re adjusting the benchmarking cluster to handle runs for node version <code>8.2.0</code>.</li><li>Tracing: We&#x27;ve finished optimization of the new tracing system and added extra robustness with regard to namespacing.</li><li>Infrastructure: We&#x27;ve been working on making all benchmarking code compliant with the latest GHC9.6.</li><li>Nomad backend: The new backend has seen adjustments due to a change of underlying hardware. Additionally, we&#x27;ve successfully performed various benchmarking runs on it.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The <code>8.2.0</code> version of <code>cardano-node</code> required adjustment of some of the sanity checks that are part of our benchmarking
+cluster automation. We&#x27;ve pinpointed the necessary changes and are currently setting up the cluster for the new node version.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The optimization efforts for the new tracing system have been completed and have significantly reduced the resource footprint
+when using it as default for a running node.  </p><p>A linchpin of the new system is the organization of traces into a namespace hierarchy. This affects configuration, self-documentation as well as rendering of desired trace messages. The new system is now equipped to detect any
+inconsistency in the whole set of tracers, defined across all components, even if they are never turned on in a running node.
+This feature adds another layer of robustness to the whole system.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>A potential switch to GHC9.6 (or higher) required some work on our code bases to make it compliant with recent compiler
+versions. We&#x27;ve future-proofed our benchmarking code.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The hardware cluster that our nomad backend was accessing has been changed, and we were able to adjust our backend
+accordingly without touching its higher level abstractions and functionality. Moreover, with the new hardware and cluster setup, certain tasks such as retrieving run artifacts or healthcheck monitoring have become more performant.  </p><p>The validation phase is ongoing. We were able to perform successful runs and analyses for various <code>8.x</code> node versions, including <code>8.2.0-pre</code>. With parallel runs on the current cluster, we hope to measure the same effects we&#x27;ve observed with the
+nomad backend - which will be a big step towards production use.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-12-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-12T00:00:00.000Z" itemprop="datePublished">July 12, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: The peformance investigation into the compiler switch to GHC9 is ongoing. Additionally, a roadmap for implementing Consensus QTAs has been developed.</li><li>Infrastructure: Our workbench has undergone some refactoring to seamlessly integrate its profiles into all available backends.</li><li>Tracing: Optimization of the new tracing system is ongoing and yielding good performance results.</li><li>Nomad backend: We developed a new feature for the nomad backend which allows pinning deployments to specific machines.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>Our analysis of the GHC9 build of <code>cardano-node</code> has produced several locations in the code base where the new compiler seems to miss opportunities for optimization. Our hypothesis is, that those can account for the difference in resource usage we observe when benchmarking with a full cluster run. Instructing the compiler on how to perform the optimizations which GHC8 apparently applied out of the box requires further investigation.  </p><p>In an effort to define Quantitative Timeliness Agreements (QTAs) on a per-component basis, we have coordinated with the Consensus team and developed a roadmap for providing those on consensus level. Making use of the insight that system-level benchmarks allow, we intend to set up and calibrate a benchmark that can reliably predict a regression or optimization for select metrics before needing full integration into <code>cardano-node</code>. This will help tremendously in various ways: catching regressions much earlier, localizing them much easier, avoiding repeated component integration and much shorter feedback cycle.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>We have worked on seamless integration of our benchmarking profiles into the many available backends that the workbench provides. The goal was to be backend-agnostic, to guarantee that all benchmarking run artifacts be structurally identical as far as their file name, format and location are concerned. This lead to refactoring work and has already landed in <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>Much effort went into further optimization of the new tracing system. After working on configuration to align both new and legacy tracing system with regard to their trace frequencies, we could uncover some increase in resource usage. This occurred for corner cases under very heavy load. These cases have been addressed already, and do now surpass the legacy tracing system in terms of performance.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>For reliable benchmarking results it is vital to introduce as few confounding factors as possible when performing runs. This includes hardware and network topology. The nomad backend has been outfitted with a mechanism to pin the nomad job for some node in our benhcmarking cluster to a specific machine instance. This greatly increases confidence in the metrics observed from a run.  </p><p>Furthermore this feature will detect any change in the underlying hardware or topology so it can be taken into account. The new feature has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-28-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-28T00:00:00.000Z" itemprop="datePublished">June 28, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed several new benchmarks and a performance investigation in preparation of switching the default compiler to GHC9.</li><li>Infrastructure: The first batch of refactoring and documentation for our <code>tx-generator</code> has been merged to <code>master</code>.</li><li>Tracing: We&#x27;ve looked into an issue where the tracing system&#x27;s concurrency could prevent a graceful node shutdown.</li><li>Nomad backend: Our new cloud backend has seen various improvements regarding deployment and monitoring; validation runs for the backend are ongoing.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The compiler switch to GHC9 as the default build platform for <code>cardano-node</code> and its components still has noticeable effects on system-wide performance metrics. An investigation into the different resource usage profiles of compiler versions does seem to indicate GHC9&#x27;s significantly different inlining behaviour may produce those effects. We&#x27;re currently locating the specific places in component code that have the most extensive effect in that regard.  </p><p>Using the <code>forge-stress</code> approximation we set up, we could determine that above effect is not due to a range of RTS parameters, as for example the number of capabilites used by the node.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h3><p>The <code>tx-generator</code> is a crucial part of our tooling responsible for producing very specific workloads for our benchmarking cluster. In an effort to flesh out an API to make it reusable for more general use cases, a first set of refactorings has been merged to <code>master</code>. Additionally, this merge contained systematic documentation both for internal and for exposed areas of the code base.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The tracing system&#x27;s concurrency could under certain conditions prevent a graceful shutdown of the node. This issue did occur only after adding specific new traces on a development branch. We could localize and address that issue.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>With the data gathered from running the new nomad cloud backend, we&#x27;ve been able to address many, many small and medium-sized improvements. The deployment process has been restructured for better efficiency, and the healthcheck system could be fine-tuned to recognize severity of various conditions that might occur. Optimization of fetching all run data from the cloud for evaluation is in progress.</p><p>Additionally, we&#x27;re continuing the new backend&#x27;s validation by setting up test runs and looking into comparative analyses with metrics gathered from the current cluster backend.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/performance-tracing"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/performance-tracing/page/3"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>25 posts tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-14-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-14T00:00:00.000Z" itemprop="datePublished">June 14, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve continued release benchmarking and established a new baseline for <code>8.0.0</code>.</li><li>New tracing: Our benchmarking profile for measuring new vs. legacy tracing performance has been refined.</li><li>Nomad backend: The healthcheck system for the the nomad cloud has been completed. We&#x27;ve performed the first full runs on the new backend.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>In our release benchmarking cycle, we established a new performance baseline for <code>8.0.0</code>. Additionally, we&#x27;ve measured
+performance under various workloads for <code>8.1.1-pre</code>; the results look promising and validate the optimization efforts
+done on several system components.  </p><p>In the meantime, we&#x27;ve finalized a build plan with GHC9.2 that matches the current one with GHC8.10; a requirement for
+benchmarking as a large amount of differences in the dependency graph can confound the results for the application code proper.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The legacy and the new tracing system differ fundamentally in design, implementation and handling. So for metrics to be
+meaningful in a comparison, benchmarking profiles have to be tuned such that not only log line frequency but frequency of specific
+trace messages are closely aligned. We&#x27;ve found that higher granularity in this regard was necessary, and done additional work on our dedicated profiles.  </p><p>Additionally, we&#x27;ve had a first glance of what additional traces could be valuable in the context of benchmarking UTxO-HD.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>As the new backend&#x27;s healthcheck system in its first iteration can now serve as a guardrail to ensure sanity of a full-length run, we&#x27;ve performed our first 52-node cluster runs on nomad cloud. We&#x27;re currently smoothing the edges around cluster deployment, and analysing the metrics gathered from those runs.  </p><p>This means the backend is entering validation phase, where we systematically compare all metrics taken from the new
+infrastructure to the existing ones, including determining reproducibility and variance.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-31-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-31T00:00:00.000Z" itemprop="datePublished">May 31, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;ve performed and analysed first benchmarks with GHC9.2 builds. Additionally we have developed an early indicator for how build config changes might reflect on metrics from our model cluster.</li><li>New tracing: Collaboration with Galois led to the new tracing system to be equipped with a re-forwarding mechanism.</li><li>Nomad backend: Porting the 52 node model cluster to nomad cloud is ongoing, with the focus on deployment and health checks.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>The first set of runs with GHC9.2 as a build platform are in. We&#x27;ve discovered a significant difference in resource profile usage compared to GHC8.10. Further investigation uncovered the need for benchmarking another parameter change in the build
+configuration: As it stands, the <code>ghc-bignum</code> package is using the Haskell <code>native-backend</code> as a default. We strive
+to benchmark a build with the <code>gmp-backend</code> next.  </p><p>A variant of our <code>forge-stress</code> local benchmark has been set up to serve as an early indicator for the resource usage profile
+we&#x27;d expect to observe on the model cluster. This provides us with a much tighter feedback loop, as local run duration is way
+shorter. This indicator is specific to changes in the configuration of build and the runtime systems, and will be of great
+support when evaluating different compiler versions or RTS flags incrementally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>The hub of the new tracing system <code>cardano-tracer</code> is designed with a fixed output behaviour, which is limited to various
+logging options. Thanks to the contribution from Galois, that design is now extended to be able to re-forward all, or a pre-filtered portion, of traces from the node in a configurable manner. This will enable downstream applications to
+directly receive the set of trace values relevant to their logic, without any additional cost for the node itself at all.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We&#x27;re currently working out the details of efficiently deploying and monitoring a fleet of 50+ nodes, along with
+job definitions for tracing and transaction generation. Scaling up to those many instances, and monitoring an ongoing
+benchmarking run required us to fine-tune communications with the nomad server.  </p><p>Related to that, the new cloud backend will provide a monitoring and health-checking mechanism which is far more flexible
+and offers more detailed insight than the previous iteration in <code>cardano-ops</code>. The backend will enable you to formulate
+very specific conditions for an ongoing run to be considered healthy, and offer automation of certain actions should these conditions not be met.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-17-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-17T00:00:00.000Z" itemprop="datePublished">May 17, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ul><li>Benchmarking: We&#x27;re preparing our model cluster to perform GHC9.2 benchmarks, as well as experimenting with increased dataset sizes.</li><li>New tracing: After optimization work on the new tracing system, another cycle of validation and documentation is due.</li><li>Analysis pipeline: First steps on implementing incremental analysis have been untertaken.</li><li>Open Sourcing: Exhaustive dataflow charts for both our analysis tool <code>locli</code> and our <code>workbanch</code> have been merged to <code>master</code></li><li>Nomad backend: The first set of CI-centric workbench profiles have been adjusted and run on the nomad backend; currently we&#x27;re porting the definition of our model cluster.</li><li>P&amp;T Meetup: We had a very productive personal meetup in Lugano, Switzerland.</li><li>Offboarding: Sadly, we have to say goodbye to our team lead. Currently, we&#x27;re busy with the handover.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-overview">Low level overview<a class="hash-link" href="#low-level-overview" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="benchmarking">Benchmarking<a class="hash-link" href="#benchmarking" title="Direct link to heading">​</a></h3><p>As a compiler switch to GHC 9.2.7 for <code>cardano-node</code>&#x27;s default build environment is around the corner, we&#x27;re setting up our benchmarking cluster to
+handle the new version. Special attention is given to the fact that we might need more flexibility in switching compiler versions in the future. This
+also involves choosing a reliable baseline as reference point for inter-version comparisons.  </p><p>Additionally we&#x27;ve been working on refining our model cluster: by increasing UTxO and delegation map sizes to closer match those of current mainnet,
+we strive to have a more accurate model - and thus be able to make more detailed predictions regarding performance. However, this still needs to
+be balanced against resource demand for all our cluster&#x27;s nodes.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h3><p>For our new tracing system, we&#x27;re currently validating the behaviour of the system after optimizations have been applied. Furthermore, some
+quality-of-life details that have changed required us to revision the system documentation.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis">Analysis<a class="hash-link" href="#analysis" title="Direct link to heading">​</a></h3><p>As a mid-term goal, we aim to provide incremental analysis of our benchmarking metrics. While currently, we can only reliably process runs that have been
+normally (or abnormally) terminated, we see the possibility of incrementally analysing ongoing runs, or any data source yielding our key metrics, as a
+huge opportunity to increase our operational flexibility. All in all, this approach entails building completely new features for our pipeline. A first effort to accomodate incrementally incoming data points has been undertaken. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>A very involved and exhaustive documentation and visualization effort has been undertaken to make the data flow through our key benchmarking
+copmonents more accessible. As a result, detailed charts for both our LogObject CLI <code>locli</code> and our <code>workbench</code> have been merged to <code>master</code>. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>While our Nomad backend is reaching completion, and hardware setup is being implemented in collaboration with SRE, we&#x27;ve been adjusting
+those profiles of our <code>workbench</code> that target CI-oriented workloads to the new backend. Those profiles should demonstrate the full functionality
+of the nomad cloud backend.  </p><p>Additionally, we&#x27;re porting a first deployable version of our model cluster to nomad cloud, which will form the basis for validation of our actual key metrics with regard to those from the existing cluster.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="performance--tracing-meetup">Performance &amp; Tracing Meetup<a class="hash-link" href="#performance--tracing-meetup" title="Direct link to heading">​</a></h3><p>We held a personal team meetup in Lugano, Switzerland. In an amazing location, and with a great seminar room to focus, we had 2 very productive
+days together. Being able to discuss live and in colour, we could effectively synchronize on where the team is at, and how we want to develop in the future.
+Also, it was a great opportunity to finally meet in person.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offboarding">Offboarding<a class="hash-link" href="#offboarding" title="Direct link to heading">​</a></h3><p>Last not least we regret that our team lead is leaving at the end of May. Currently, he&#x27;s handing over all his obligations, which requires reorganisation
+of team structure, and responsabilities of team members for specific tasks. Serge, we all want to thank you for your excellent and reliable lead; we very much enjoyed the time with you, and wish you all the best for your future endeavours!</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-05-03-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-05-03T00:00:00.000Z" itemprop="datePublished">May 3, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: The benchmarks and performance investigations for the new <code>8.0</code> release branch are ongoing.</li><li>New tracing: Performance optimization of the new tracing system is paying off and we could notably shrink its resource footprint.</li><li>Analysis pipeline: An exhaustive documentation and dataflow diagram for our analyses is being worked on.</li><li>Infrastructure: The <code>plutus-apps</code> flake input for <code>cardano-node</code> has finally been removed.</li><li>Nomad backend: A PR implementing placement of benchmarking clusters has been merged.</li></ul><h1>Benchmarking</h1><p>The performance investigations on the <code>8.0</code> release branch have lead to pinpointing and addressing incosistent behaviour. For that,
+we created yet another local reproduction with the workbench&#x27;s <code>forge-stress</code> benchmark.  </p><p>Currently we&#x27;re working on scaling up the dataset size (UTxO and delegations) on the AWS cluster to gain further insight into <code>8.0</code> and
+subsequent releases.  </p><p>Additionally, we&#x27;ve refined the <code>trace-bench</code> family of profiles that target benchmarking our own new tracing system. </p><h1>Tracing</h1><p>Optimization of the tracing system has identified several locations where inefficient serializations were used; those were not originally
+intended to run on a performance-critical codepath. We&#x27;ve worked on improving those, as well as eliminating cases of redundant
+conversion between different serialization formats. This has brought down both memory and CPU impact of the tracing system.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="dataflow-documentation">Dataflow documentation<a class="hash-link" href="#dataflow-documentation" title="Direct link to heading">​</a></h3><p>The LogObject CLI <code>locli</code> is at the heart of our analysis and reporting pipeline. To increase its accessibility and facilitate
+further development, we&#x27;re creating a detailed and illustrated documentation of all dataflows that happen during analysis and reporting. </p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="remove-redundant-plutus-flake-input">Remove redundant Plutus flake input<a class="hash-link" href="#remove-redundant-plutus-flake-input" title="Direct link to heading">​</a></h3><p>This step is the conclusion of porting Plutus benchmarking scripts to our own library. By finally removing the now unnecessary flake input,
+we simplify the dependency graph for <code>cardano-node</code>, as well as enable immediate feedback when developing Plutus benchmarks.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>Sophisticated placement of nodes across various regions of the globe is a cornerstone of the model cluster we use for benchmarking.
+This capability has now been added to the Nomad backend and can be controlled with Nomad job descriptions. A PR with this, along
+with various quality-of-life improvements, has been merged to <code>master</code>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-19-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-19T00:00:00.000Z" itemprop="datePublished">April 19, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed a series of benchmarks aimed at the new <code>8.0</code> release branch and built a timeline from the <code>1.35</code> releases to that branch.</li><li>New tracing: Work on safeguarding the new tracing system performance-wise is ongoing. A practical use case for data points is being tackled with Galois.</li><li>Analysis pipeline: We&#x27;re working on automatically obtaining a detailed manifest for each run.</li><li>Infrastructure: The library for benchmarking Plutus scripts has been merged. Also, we&#x27;ve laid the ground for including GHC profiling data into our workbench.</li><li>Nomad backend: The first iteration of a distributed / multi-client Nomad cluster has been merged.</li></ul><h1>Benchmarking</h1><p>We have performed various cluster runs targeting the <code>8.0</code> release branch. That way we were able to catch an inconsistency in behaviour early on. This led to the creation of a specialized workbench profile <code>epoch-transition</code> for local reproduction of what we observed on the benchmarking cluster.  </p><p>Furthermore, we bridged the gap between the run data from the <code>1.35.x</code> releases to the the new <code>8.0.x</code> release branch. This included walking the
+<code>master</code> branch backwards and pinpointing the order, as well as the dates and commits of all relevant component bumps. This timeline is absolutely crucial
+in locating possible regressions for the new release branch, as it provides the exact points in history we would need to target with a comprehensive set of
+benchmarks.</p><h1>Tracing</h1><p>In-depth performance analysis of the new tracing system has already yielded results and helped us smoothing some rough edges. However, this work is still
+ongoing.  </p><p>In coordination with Galois, who are developing a system assurance service by observing a number of <code>cardano-node</code>s, we&#x27;re working with the implementation
+of data points which the node provides during runtime. While making the view on data points expressive enough for the external service, the computational
+burden inside the node needs to be kept to an absolute minimum. We&#x27;re currently in ideation about whether <code>cardano-tracer</code> could be extended with a richer
+feature set to that end.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="detailed-manifest">Detailed manifest<a class="hash-link" href="#detailed-manifest" title="Direct link to heading">​</a></h3><p>A run manifest documents, among other things, the component dependencies that were used for a specific build the run has been performed with.
+These dependencies come from different package sources, have different versioning policies, and an identical package version might provide different
+performance characteristics depending on the exact commit used for the build. This manifest will greatly increase insight into where changes in measured behaviour might have originated
+by making all component bumps visible and accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-profiling-inside-workbench">GHC profiling inside workbench<a class="hash-link" href="#ghc-profiling-inside-workbench" title="Direct link to heading">​</a></h3><p>The workbench has been equipped with a new <code>-profnix</code> profile flavour. This enforces a <code>-fprof-auto</code> build for all node-related packages. The type of
+profiling data generated by the GHC runtime can be customized and will enter statistical analysis. The relevant PR for this new feature has already
+been merged to <code>master</code>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The added feature for a multi-client Nomad cluster greatly enhances how jobs are organized by the backend and mapped within specific instances.
+This results in great maintainability while not giving up on flexibility. However, work on that feature is still ongoing.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/performance-tracing/page/2"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/performance-tracing/page/4"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>25 posts tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-04-05-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-04-05T00:00:00.000Z" itemprop="datePublished">April 5, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We worked on adjusting our infrastructure to the new <code>8.0</code> release branch and performed a (very) early run.</li><li>New tracing: We&#x27;re profiling the new tracing system for minimizing its resource footprint and guarantee high throughput.</li><li>Analysis pipeline: Variance analysis both for reporting and for serving as a point of comparison has been merged.</li><li>Infrastructure: A library for Plutus scripts will be integrated in our tooling and benchmarking profiles. Also, a profile family aimed at the tracing systems has been added.</li><li>Nomad backend: Various specializations of the backend are currently being implemented, along with streamlining credentials management.</li></ul><h1>Benchmarking</h1><p>We have adapted our benchmarking cluster to the requirements of the <code>8.0</code> release branch. Testing runs of a very early feature branch for <code>8.0</code>
+helped us localize an important issue in collaboration with the other teams. We look forward to gathering preliminary metrics for <code>8.0</code> soon.</p><h1>Tracing</h1><p>Analysis of resource usage profiles of both the legacy and new tracing system, with and without trace forwarding, have lead us to gather very
+detailed profiling data for each possible setup. This is to ensure we keep resource usage within the node to an absolute minimum, while still providing
+the highest possible throughput of data for forwarding to <code>cardano-tracer</code>.   </p><p>Additionally, we&#x27;ve worked on a very practically-oriented document targeted at end users of the new tracing system. It provides tested step-by-step instructions
+for tunneling trace forwarding from a node to <code>cardano-tracer</code> via an easy to manage system service, which will match the production setup of most users.</p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Variance analysis as a full-fledged entity in our tooling has been merged. Not only is this type of analysis now part of our reporting pipeline - variance
+analysis can be fed back and serve as an additional point of comparison.</p><p>Furthermore, we&#x27;ve created a profile family for the workbench that&#x27;s specifically aimed at measuring and comparing tracing system configurations.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="plutus-library">Plutus library<a class="hash-link" href="#plutus-library" title="Direct link to heading">​</a></h3><p>We opened a PR containing a new package for benchmarking - an extendable library that holds all Plutus scripts we use in our benchmarking profiles.
+This will enable us in the future to iteratively work on customizing any given script, and the way is called in the context of a specific profile.
+It is a refinement of current affairs, where we have additional build inputs solely to generate a static script file tied to an external commit.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The nomad backend is being specialized in three ways: using a podman driver locally, using nomad agents supporting nix installables, and using nomad cloud agents. This supports having a common surface independent of the actual backend driver being used. In addition, vault retrieval and management of cloud access credentials is
+being improved to minimize any friction for the backend user.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-22-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-22T00:00:00.000Z" itemprop="datePublished">March 22, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Benchmarking: We performed benchmarks for the new tracing system, and started benchmarking for varying GHC RTS configurations.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature has been merged; we&#x27;re currently improving documentation and creating setup guidelines for end users.</li><li>Analysis pipeline: Our refined metrics PR has been merged. We&#x27;re working on including variance analysis to our reporting machinery.</li><li>Infrastructure: Support for Conway genesis in our workbench has been merged. At the moment, we&#x27;re laying the groundwork for enabling GHC 9.2 in our benchmarks.</li><li>Open Sourcing: The API demo has reached prototype phase; work on documenting the API and providing exemplifying use cases is ongoing.</li><li>Nomad backend: The nomad-exec based task driver has been merged. The backend has been equipped with the capability for genesis distribution via S3 bucket.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="new-tracing">New tracing<a class="hash-link" href="#new-tracing" title="Direct link to heading">​</a></h3><p>The new tracing system has undergone various benchmarking runs with variance analysis, and comparison to a baseline using legacy tracing. We could observe
+a slight shift in the resource usage profile from memory to CPU, but no regressions in block propagation metrics. Variance was observed to be notably smaller, which gives the new system a much better predictability. From this angle, we consider the new system fit for production use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ghc-rts-parametrization">GHC RTS parametrization<a class="hash-link" href="#ghc-rts-parametrization" title="Direct link to heading">​</a></h3><p>We&#x27;re currently prerforming various runs on the cluster to explore the space of different GHC RTS settings for running nodes. The main focus lies
+on different configurations for the garbage collector, as well as increasing the number of CPU cores the node may use.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>Our API demo has reached prototype stage, and operates on live data from the production database. Making use of the experience gained, we&#x27;re refining version 1 of the API to provide optimized usability, and creating documentation that both is descriptive of the API endpoints, and focuses on practical, exemplary use cases.</p><h1>Tracing</h1><p>For the new tracing system we&#x27;re currently undertaking an effort to multi-layered documentation: a condensed version, as well
+as a setup guide with pragmatical focus, will be provided alongside the in-depth documentation. This effort should cater to different audiences, and provide distinct entry points
+for users of the new system, depending on their wants and needs. </p><h1>Infrastructure &amp; Analysis</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="general">General<a class="hash-link" href="#general" title="Direct link to heading">​</a></h3><p>Having included Conway genesis in the workbench, as a next step in future-proofing out benchmarking infrastructure, we&#x27;re laying the foundation for a switch in compiler version to GHC 9.2. Additionally, we considered variance analysis of our runs to merit inclusion into our reporting pipeling - which will
+increase confidence in specific metrics.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>We have implemented an appropriate mechanism for genesis distribution: Only after a benchmarking cluster has been deployed successfully, genesis
+is patched and uploaded to an AWS S3 bucket for the nodes to retrieve - as a final step before initiating the actual run. We&#x27;re confident that this deferred approach will provide clearer evidence for genesis patches, as well as minimize startup time for all runs by factoring in deployment re-tries.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-08-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-08T00:00:00.000Z" itemprop="datePublished">March 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>Release benchmarking: We again performed benchmarks for the next 1.35.6 release candidate.</li><li>New tracing: Backwards compatibility with legacy tracer nomenclature is being implemented to smoothe the transition for end users.</li><li>Analysis pipeline: A major refinement of benchmarking metrics has been realized, along with a structural improvementents regarding metrics denomination.</li><li>Open Sourcing: Work on going live with our benchmarking data has begun, as well as creating an API demo and documentation.</li><li>Nomad backend: The backend was adapted to a major refactoring in workbench and is being equipped with a nomad-exec based task driver.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the second release candidate for 1.35.6 could again attest to a perfectly clean bill of health.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="analysis-pipeline">Analysis pipeline<a class="hash-link" href="#analysis-pipeline" title="Direct link to heading">​</a></h3><p>Our analysis pipeline has seen an introduction of additional metrics, especially when focusing on the block producing node. They allow us to better
+differentiate the timing of ledger ticking and mempool snapshotting in the forging loop - a feature that promises much deeper insight into UTxO-HD performance.
+Additionally, a restructuring of metrics names has been undertaken along with improvements in their data dictionary; a measure that will make benchmarking
+data more easily accessible.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="open-sourcing">Open Sourcing<a class="hash-link" href="#open-sourcing" title="Direct link to heading">​</a></h3><p>As a prerequisite for going live with our benchmarking data, we&#x27;re currently working on consolidation of existing analyses, such as to provide a common foundation when accessing them externally. Additionally, we&#x27;ve begun working on a small visualization demo and interactive API documentation. Those will enable
+third parties to make use of that data much more easily, by having reliable guidelines and a working example.</p><h1>Tracing</h1><p>The new tracing system is being outfitted with a comprehensive mapping of its structure to the legacy tracer nomenclature. This feature will make
+the switch to the new system as smooth as possible for end users, allowing them to gradually adapt their tooling without breaking any functionality in the process.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><p>The Nomad backend was adapted to the latest major refactoring in workbench. Work was done on making stateful Nomad clients more autonomous, which will greatly facilitate any automation building on that backend. A task driver based on nomad-exec is currently being implemented.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-23-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-23T00:00:00.000Z" itemprop="datePublished">February 23, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mgmeier.png" alt="Michael Karg"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mgmeier" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Karg</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><ul><li>SECP benchmarking: we concluded our benchmarking runs and analyses of the new SECP primitives for the Valentine hard-fork.</li><li>Release benchmarking: we performed a round of benchmarks for the 1.35.6 release.</li><li>UTxO-HD benchmarking: we performed first runs for UTxO-HD and are currently refining the benchmarking setup.</li><li>New tracing: for better accessibility, the new tracing system is being outfitted with introspective capabilities.</li><li>Infrastructure: with the Nomad cloud workbench backend we were able to perform our first test cluster runs successfully on SRE infrastructure.</li><li>Infrastructure: the initial NixOps workbench backend has been completed; a PR containing this work, along with many quality-of-life improvements of our tooling, got merged.</li></ul><h1>Performance</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="secp">SECP<a class="hash-link" href="#secp" title="Direct link to heading">​</a></h3><ol><li>For SECP, we settled on a fixed tx count per block, while simultaneously spending as much as possible of the block budget. Thus we were able to minimize the impact of per-SC-call overhead.</li><li>The final runs were performed with various fractions, e.g. half, of the current block budget to ascertain how these workloads would fare compared to a value-only run.</li><li>The SECP machinery and profiles are currently being generalized into an approach to aim for very specific aspects of a smart contract for benchmarking. </li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="utxo-hd">UTxO-HD<a class="hash-link" href="#utxo-hd" title="Direct link to heading">​</a></h3><ol><li>After analyzing initial UTxO-HD runs, it turned out that mempool snapshotting had to be throttled for benchmarking; it affects a lock that UTxO-HD had to introduce into the forging loop.</li><li>We&#x27;re currently adapting the benchmark setup to that, and will then perform a new combination of baseline and UTxO-HD runs.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="1356-release">1.35.6 release<a class="hash-link" href="#1356-release" title="Direct link to heading">​</a></h3><p>Benchmarking the 1.35.6 release candidate could attest to a perfectly clean bill of health.</p><h1>Tracing</h1><p>Work on the new tracing system&#x27;s introspective capabilites is ongoing: Immediate use cases of the new API include being able to statically validate generated tracer documentation, as well as providing information of a specific tracing setup in the node via traces themselves. These features will make the new system both more robust, and more accessible.</p><h1>Infrastructure</h1><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nomad-backend">Nomad backend<a class="hash-link" href="#nomad-backend" title="Direct link to heading">​</a></h3><ol><li>Work on the cloud deployment capability of the Nomad workbench backend continued; for testing we can automate multiple Nomad clients.</li><li>Locality assumptions were removed and job monitoring was refactored.</li><li>To facilitate directly-executable derivations, Nomad Job specification files are now self contained with GitHub references and configs needed to run a cluster.</li><li>We&#x27;re currently evaluating different options for genesis distribution in said cluster.</li></ol><h3 class="anchor anchorWithStickyNavbar_LWe7" id="nixops-backend">NixOps backend<a class="hash-link" href="#nixops-backend" title="Direct link to heading">​</a></h3><p>The NixOps workbench backend has reached an initial functional stage. Consequently, the relevant PR was merged. It also contained many improvements to our analysis tooling, as well as a structural overhaul of workbench itself. We consider this an important step of future-proofing our benchmarking machinery.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-02-08-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-02-08T00:00:00.000Z" itemprop="datePublished">February 8, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking:  we ran several rounds of SECP benchmarks, refining the benchmark setup as we discovered the properties of the system.  After formulating an initial suggested change to the protocol parameters, we&#x27;re currently running what we consider the final benchmark, to validate the underlying assumptions.</li><li>Release benchmarking:  we&#x27;ve performed a round of benchmarks for the hotfix 1.35 release update and initiated the 1.35.6 benchmarks.</li><li>New tracing:  the improvement in the tracing API, with the underlying restructuring, was completed and merged into the node.</li><li>New tracing:  before going live, we&#x27;re performing the documentation update, as well as reworking the end user migration guide.</li><li>Open sourcing:  the benchmarking data publishing has been completed and deployed.  After populating it with relevant benchmark data and providing basic user documentation we can go live.</li><li>Infrastructure:  the cloud workbench backend is progressing well, the networking aspects of multi-region deployment are currently being worked on.</li><li>Infrastructure:  the NixOps workbench backend is still being worked on, as part of migration from cardano-ops and benchmarking infrastructure unification.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are approaching the end of a chain of SECP benchmarks, as we gradually eliminated deficiencies in the setup as we were discovering them and answering newly appearing questions:</p><ul><li>we improved the tx/block filling strategy in the generator, to maximise the per-block utilisation of resources and so better approximate the worst-case,</li><li>after a discovery of what looked like significant per-SC-call overhead, we again tweaked the the tx/block filling strategy,</li><li>finally, we&#x27;re redoing all benchmarks together with a value-only run against the backdrop of Mainnet-sized datasets, to balance the suggested adjustment.  That also ran into difficulties wrt. limitations of our benchmarking hardware.</li></ul><p>In addition, we started benchmarks of the 1.35.6 release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>A rework of the new tracing system&#x27;s internals and API was merged.  It extended the system with introspection, which enabled a range of improvements, some of which were implemented along the way.</p><p>Specifically, we were able to completely short-cut processing of messages generated by the tracers that were made provably ineffective by current tracing configuration.  Further, now ongoing work enabled by the introspection facilities, includes static validation of documentation and enhanced node state reporting.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>On the opensourcing/transparency front, the benchmark data publishing machinery was finally fully assembled and put online.  As resources permit, we&#x27;ll work on populating it with benchmarking data, preparing basic documentation and engaging the stakeholders.</p><p>The work on the cloud deployment capability of the Nomad workbench backend continued with focus on setting up inter-node networking and removal of locality assumptions.  A major step besides those, was completion of a switch-over to the directly-executable derivations, which eliminate the need for creation and distribution of images -- thereby increasing the speed of deployment.</p><p>The Nixops workbench backend progressed steadily, reaching minimal deployment capability.  The remaining parts are proper shared configuration generation, and porting of the run control functionality from cardano-ops.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/performance-tracing/page/3"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/performance-tracing/page/5"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>25 posts tagged with &quot;performance-tracing&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-11-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-11T00:00:00.000Z" itemprop="datePublished">January 11, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since our last update, we focused on infrastructure work:  benchmark enablement, tracing system, benchmark environment merge and open source support:</p><ol><li>SECP benchmarking enablement is underway:  enabling SECP runs in our cardano-ops benchmarking environment is still in progress.</li><li>The new tracing system:  the improved API of the new tracing system was implemented, and we&#x27;re now porting the tracing integration layer over.</li><li>Infrastructure:  the mainnet protocol parameter history is now encoded in the workbench profile machinery at epoch-level granularity, which gives us a systematic approach towards description of past and future benchmarks.</li><li>New benchmark deployment infrastructure:  we&#x27;ve made some progress on Nomad deployment backend, shared by both of the data publishing and benchmarking needs.</li><li>Legacy benchmarking:  we&#x27;ve started merging the legacy benchmark deployment infrastructure into the workbench.</li><li>Open sourcing:  the benchmarking data publishing tool was adapted to the Nomad execution environment provided by SRE, pending final deployment.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The AWS cluster infrastructure necessary for SECP benchmarking is still being worked on.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>The improved tracing internals were implemented, and we&#x27;re now into the phase of updating the tracing integration, which is also mostly done.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Thanks to collaboration with the DevX team, we have identified and pursued a design that would enable our Nomad workbench backend to execute deployments of both the benchmarking cluster and our data publishing components.</p><p>On the benchmark parametrisation front, we have eliminated a long-standing weakness in the way we were specifying the protocol parameters.
+We now have a very clear and granular method to keep track of protocol parameter evolution -- e.g. the mainnet history changes are now tracked at epoch granularity, while also allowing for systematically described change overlays.  This makes the benchmark profile definition much more clear and robust against mistakes.</p><p>We also started a merge of the legacy benchmarking environment (based on cardano-ops) into the workbench.  The separation between environments was too costly, causing us to reimplement any benchmarking change twice -- first, during development, in the workbench, then in cardano-ops.  In addition, maintenance of compatibility code was incurring additional costs, slowing benchmark data analysis development.
+Once this merge is complete, this will allow us to sharply cut the benchmark development cycle and overheads.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-14-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-14T00:00:00.000Z" itemprop="datePublished">December 14, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>SECP benchmarking enablement was completed:  we are now able to do local runs of the SECP workloads.  The next step is to port this to the AWS environment.</li><li>A new workstream for Plutus cost modeling improvement:  we&#x27;ve planned and started implementing the smart contract call overhead measurement machinery.</li><li>The new tracing system:  after doing more benchmarking to address inter-run variance, we discovered that the regression, while still there, is small enough not to be release critical.  Nevertheless, we&#x27;re continuing with the further performance-oriented rework of the internals.</li><li>Infrastructure:  a significant refactoring of the workbench internals was merged.  We also started improving the denotation for ever-evolving protocol parameters.  Comparative analysis of multi-run batches implementation started.</li><li>Open sourcing:  our plans matured sufficiently so that we now expect actual deployment work to start this week.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>The SECP benchmarking workload has been fully implemented in the workbench.  We are now porting it over to AWS, and after that we&#x27;ll be running the model cluster workload.</p><p>We&#x27;ve also started implementing mechanics for the upcoming investigation of the Plutus smart contract call overhead, which is expected to lead us to improved Plutus cost modeling.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>After the initial model-scale performance data caused us to panic, among other things we&#x27;ve done more benchmarks, and it turned out that inter-run variance increase was the culprit.  The actual regression averages to barely noticeable 1-2% in key metrics -- which is certainly not release critical.</p><p>To understand the impact of the new tracing system, we have to bear in mind the extra functionality it provides:</p><ol><li>We are now processing all messages generated by the system, without making any shortcuts that the old system had to resort to.  That causes the new tracing to do more work, but is more useful for all users and developers involved -- since it leads to a simple, non-confusing configuration.  Incidentally, that&#x27;s also the area where we are reworking the internals, to deduce and enable the optimisations that are implied by the particular configuration.</li><li>The new tracing system is benchmarked with remote tracing as the default backend (whereas the old one was using local, builtin log storage mechanism).  In some sense it&#x27;s the fair benchmark, because that&#x27;s the way we expect SPO&#x27;s to set up tracing.  That, however also causes it to do more work.</li></ol><p>All that said, since we&#x27;ve established the performance of the new system to be adequate for the release, we won&#x27;t be delaying it much further.</p><p>In addition, we&#x27;re still pursuing our performance-enhancing rework of the new tracing internals.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>After implementing the multi-backend capability in the workbench, we got the opportunity to reassess the generic/backend boundaries and perform some long-awaited cleanups and simplifications in that area.  The results of this work have been merged and will serve as a solid foundation for the CI and cloud backends.</p><p>Moving to analysis, we&#x27;ve also improved provenance of the raw data, by collecting more identification information and statistics about it.
+This means, e.g. that we now record checksums, message frequencies and timestamps from the log files coming into analysis.
+This will be used to enable us to see more data anomalies earlier, and lift that information directly into the generated reports.</p><p>A new feature is now under implementation -- the ability to provide comparative analysis of multi-run batches.
+Previously we only had automation for two aspects separately, so we only could either:</p><ul><li>compare individual runs (used for different node configurations / versions)</li><li>collect variance statistics from a batch of runs (used to enhance statistical confidence for a single node configuration / version)
+Naturally, combining these two capabilities was a long-desired feature of our analysis pipeline.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-30-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-30T00:00:00.000Z" itemprop="datePublished">November 30, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>Benchmarks for the 1.36 first pre-release bump of the internal components have been delivered, and data shows the component bump is clear for release.</li><li>SECP benchmarking enablement is underway:  the necessary generator features have been implemented, and are now being integrated into the workbench.</li><li>The new tracing system:  in response to the performance regression we previously discovered we are working on pre-planned implementation improvements, and doing more benchmarks.</li><li>Infrastructure:  the Nomad-based workbench backend has been made closer to a cloud deployment scenario.  Cleanup in preparation for Cicero CI/CD integration started.</li><li>Open sourcing:  ongoing SRE collaboration on production deployment of performance data publishing.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We have ran benchmarks for the first component bump of the upcoming 1.36 release, and we don&#x27;t see any significant performance changes.  The component bumps are therefore clear for release.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>For the tracing system regression that we spotted -- even before, we already had plans for further efficiency improvement, and now we are actively pursuing them.
+The idea is to collect more statically-available information to enable shifting of more tracing decisions from message delivery time to configuration time.</p><p>To support this effort, we also started running more benchmarks and enhanced data analysis with relevant metrics.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>Generation support for Plutus V2 has been implemented and so, with the help of the previously made looped signature-verifying script, the generator is now capable of producing two SECP workloads: verifying either ECDSA or Schnorr signatures.  This is now being integrated into the infrastructure -- the generator parametrisation API is being enhanced and the workbench is being extended to handle the new parametrisation.</p><p>In addition the workbench is now being enhanced to handle protocol-version-based choices for the Plutus cost model.</p><p>The intermediate cloud compatibility iteration of the workbench cloud enablement effort was merged.
+We are now doing some cleanup work in preparation for starting the Cicero backend, which will bring us nearly completely to the CI/CD integration.</p><p>We continue collaboration with SRE on production deployment of data publishing.  We now have a gradual rollout plan, which respects the plans for SRE infrastructure feature availability.</p><p>We are working on recovering the software dependency manifest feature that was lost with the organisation-wide transition to CHaP.</p><p>As usual, a number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-16-performance-and-tracing">Performance &amp; tracing update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-16T00:00:00.000Z" itemprop="datePublished">November 16, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><ol><li>P2P performance investigation is ongoing, in support of the networking team.</li><li>SECP benchmarking enablement is underway: we already have the script and are working on Plutus V2 generation support.</li><li>Unexpected setback in the new tracing system:  full scale benchmarks have shown a performance regression: local chain syncing benchmarks were an improvement over legacy tracing.</li><li>On the open sourcing front we added an integrated data dictionary, which is necessary for explaining ourselves to the world.  SRE collaboration on production deployment of performance data publishing has started.</li><li>We have started bringing the Nomad-based workbench backend closer to a cloud deployment scenario.</li></ol><h2 class="anchor anchorWithStickyNavbar_LWe7" id="performance">Performance<a class="hash-link" href="#performance" title="Direct link to heading">​</a></h2><p>We are supporting the networking team on P2P performance investigation.  Generation support for Plutus V2 was started.  We have collaborated with the Plutus team to get a SECP benchmark script, which is now ready for use, pending Plutus V2 support.  The transaction generator has also been updated to the cardano-api changes.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="tracing">Tracing<a class="hash-link" href="#tracing" title="Direct link to heading">​</a></h2><p>We ran an initial round of full-scale benchmarks for the new tracing system -- which uncovered a regression relative to legacy tracing, which is contrary to the local chain syncing benchmarks, that showed improvement instead.  We added tracing to cardano-tracer, fixing some minor bugs on the way.  Network and disk IO metrics are now collected once again and are integrated into analysis.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="infrastructure">Infrastructure<a class="hash-link" href="#infrastructure" title="Direct link to heading">​</a></h2><p>The first iteration of the Nomad-based local workbench backend was completed -- it has reached feature parity with the existing supervisor backend.  The next iteration started, bringing it closer to the cloud scenario, by deploying to separate Nomad tasks connected by a virtual network.  This will serve as basis for CI and full cloud backends.</p><p>We designed and implemented the authoring pipeline for the performance data dictionary, which will be henceforth embedded in our performance reports.  We are collaborating with SRE on production deployment of data publishing.</p><p>A number of smaller workbench, data analysis &amp; reporting improvements have been made.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-10-28-performance-and-tracing">Performance &amp; Tracing Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/deepfire.png" alt="Serge Kosyrev"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/deepfire" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Serge Kosyrev</span></a></div><small class="avatar__subtitle" itemprop="description">Performance and Tracing Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>On the performance side, the team ran benchmarks for the the P2P feature and the 1.35.4 release.  We finished a prototype for performance data publishing.  We almost finished the local deployment backend for the workbench using the new SRE deployment infra.  We worked on fixing and improving our data analysis pipeline.</p><p>On the tracing side, the team worked on isolating a critical issue causing message loss in the remote tracing backend.  The issue was resolved and we now have proper end-to-end coverage for the scenario.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h2><ul><li>The new tracing system public release is getting closer, as we&#x27;re resolving remaining rough edges that are discovered in full-scale deployments.  The local benchmarks we ran were already showing improvement relative to legacy tracing, so we expect similar results at full scale.</li><li>The first (local deployment) iteration of benchmarking adopting the new SRE deployment infra is nearly done.  We thank Michael Fellinger and Robin Stumm for their assistance.  Two further phases remain:  CI integration and cloud deployment.</li><li>The benchmarking data publishing prototype is ready.  This serves as a springboard for both opening our performance assessment workflow (to support the wider Cardano developer community), and for data provision to the business community.  Our next steps are to secure a permanent deployment for this mechanism and to integrate it into the benchmarking infrastructure.  This requires collaboration with SRE.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/performance-tracing">performance-tracing</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/performance-tracing/page/4"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>5 posts tagged with &quot;release&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been working towards <code>cardano-node-1.35.5</code> release.  QA &amp; benchmarking
+teams gave a green light for the release, and we made decent progress with some
+CI problem which we encountered on the way (<a href="https://github.com/input-output-hk/cardano-node/pull/4612" target="_blank" rel="noopener noreferrer">PR #4612</a>). We are also working on
+peer sharing, making improvements in our testing infrastructure, reducing
+technical debt and making progress towards <code>io-sim-1.0.0.0</code>. Galois is making
+progress on Handshake improvements.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="low-level-summary">Low level summary<a class="hash-link" href="#low-level-summary" title="Direct link to heading">​</a></h2><p>Our diffusion simulation network now includes a mixed network of <code>initiator
+only</code> and <code>initiator and responder</code> nodes. <a href="https://github.com/input-output-hk/ouroboros-network/issues/4222" target="_blank" rel="noopener noreferrer">issue #4222</a></p><p>We are now reviewing the <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing pull request</a>.</p><p>We are also reviewing pull request which introduces handshake query flag. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4256" target="_blank" rel="noopener noreferrer">PR #4256</a></p><p>We fixed a bug in our network simulator.  The bug was triggered when a node
+died when performing a simultaneous TCP open (a corner case of a corner case!). <a href="https://github.com/input-output-hk/ouroboros-network/pull/4265" target="_blank" rel="noopener noreferrer">PR #4265</a></p><p>We also refactored <code>Snocket</code> interface and removed the bearer construction from
+its methods. <a href="https://github.com/input-output-hk/ouroboros-network/pull/4260" target="_blank" rel="noopener noreferrer">PR #4260</a></p><p>We are working towards releasing <code>io-sim-1.0.0.0</code> on Hackage, which includes
+reviewing two PRs: <a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a> and <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a> as well as writing an announcement
+blog post.  </p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-release">Node Release Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-11-02---2023-01-13">2022-11-02 - 2023-01-13<a class="hash-link" href="#2022-11-02---2023-01-13" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>A 1.35.5 release for single relay P2P is nearly completed and should be released this month. This release is based on
+<code>release/1.35</code> branch and does not bump cardano-ledger.</p><p>The team successfully integrated an interim release bump of ledger and consensus into cardano-node master.
+This work will not be released in a node version, but will be continued by the current dependency bump in progress.</p><p>We anticipate once this dependency bump is completed, regular 2 week releases will be feasible again.</p><p>The 1.35.4 release is being ran by more than 70% of stake pools. Planning for the mainnet hard fork date is in progress.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/releases/tag/1.35.4" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.5</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-12-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-12T00:00:00.000Z" itemprop="datePublished">December 12, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>In last sprint the team focused on preparations for the conference talk at
+<a href="https://sites.uclouvain.be/OPODIS2022/" target="_blank" rel="noopener noreferrer">OPODIS 2022</a>.  We also worked on preparations to publish <code>io-sim</code> and related
+packages on Hackage (<a href="https://github.com/input-output-hk/io-sim/pull/57" target="_blank" rel="noopener noreferrer">PR #57</a>, <a href="https://github.com/input-output-hk/io-sim/pull/60" target="_blank" rel="noopener noreferrer">PR #60</a>).</p><p>We also started reviewing:</p><ul><li><code>ouroboros-network</code></li><li><code>cardano-node</code></li><li><code>cardano-ledger</code>
+repositories for open-source readiness (<a href="https://github.com/input-output-hk/ouroboros-network/pull/4218" target="_blank" rel="noopener noreferrer">PR #4128</a>).</li></ul><p>We prepared a PR which changes how <code>node-to-node</code> and <code>node-to-client</code> protocol
+versiones are serialised in <code>cardano-node</code> log (<a href="https://github.com/input-output-hk/cardano-node/pull/4691" target="_blank" rel="noopener noreferrer">PR #4691</a>).</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-28-network">Network Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-28T00:00:00.000Z" itemprop="datePublished">November 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/coot.png" alt="Marcin Szamotulski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/coot" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Marcin Szamotulski</span></a></div><small class="avatar__subtitle" itemprop="description">Network Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="stake-driven-data-diffusion-release-for-relays">Stake-Driven Data Diffusion Release for Relays<a class="hash-link" href="#stake-driven-data-diffusion-release-for-relays" title="Direct link to heading">​</a></h2><p>IOG networking team decided to release the <em>Stake-Driven Data Diffusion with
+Robust Optimised Peer Selection</em> also more commonly known as <em>P2P</em>.  In the
+last update, we informed about a performance regression, but it turns out it
+only affects block producers, and thus we highly advise against running it on
+such nodes.  Further investigation is required to find the cause of it.</p><p>On IOG&#x27;s benchmarking cluster we have seen quite a good performance improvement
+on block propagation itself.  The cluster is running a static topology with
+valency 6 (each node is connected to 6 other nodes).  In which every of the 50
+nodes are block producers.  The setup of this network is the same as mainnet.
+We&#x27;ve seen 40-50% performance improvement on block propagation comparing to the
+same cluster deployed with the same topology but using non-P2P nodes.  We think
+this performance improvement is caused by using full duplex connections.  Quite
+likely the transaction traffic floating in both directions on the same TCP
+connection helps to keep the TCP window open.  Note that in a cluster of 50
+nodes with valency 6 the probability of having at least one duplex connection
+is more than 50%.  We don&#x27;t expect the same improvement on mainnet because the
+network is much wider and the transaction traffic is not as large.</p><p>Just before the release we squashed two small bugs:</p><ul><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a> - top level integration bug in <code>keep-alive</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a> - a bug in <code>outbound-governor</code>;</li><li><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a> - a fix <code>cardano-ping</code> support of <code>NodeToNodeV_10</code>.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="peer-sharing">Peer Sharing<a class="hash-link" href="#peer-sharing" title="Direct link to heading">​</a></h3><p>We were carrying a review of <a href="https://github.com/input-output-hk/ouroboros-network/pull/4019" target="_blank" rel="noopener noreferrer">peer sharing PR</a>.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq">DeltaQ<a class="hash-link" href="#deltaq" title="Direct link to heading">​</a></h3><p>Neil Davies was invited to give a guest lecture entitled <code>Avoiding System Catastrophes</code> at <a href="https://uclouvain.be/en/index.html" target="_blank" rel="noopener noreferrer">UCLouvain</a>.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="what-have-we-achieve-last-sprint">What have we achieve last sprint<a class="hash-link" href="#what-have-we-achieve-last-sprint" title="Direct link to heading">​</a></h2><ul><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4163" target="_blank" rel="noopener noreferrer">issue #4163</a>: we found out that a control message is not passed to the
+<code>keep-alive</code> mini-protocol, this results in every demotion executing demotion
+timeout rather than a graceful termination.  With the fix the node will no longer log:</p><div class="language-json codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-json codeBlock_bY9V thin-scrollbar"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#393A34"><span class="token punctuation" style="color:#393A34">{</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;kind&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;PeerStatusChangeFailure&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;peerStatusChangeType&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;WarmToCold (ConnectionId {localAddress = 192.168.0.10:7000, remoteAddress = 3.129.186.40:3000})&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">,</span><span class="token plain"> </span><span class="token property" style="color:#36acaa">&quot;reason&quot;</span><span class="token operator" style="color:#393A34">:</span><span class="token plain"> </span><span class="token string" style="color:#e3116c">&quot;TimeoutError&quot;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#393A34"><span class="token plain"></span><span class="token punctuation" style="color:#393A34">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg class="copyButtonIcon_y97N" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_LjdS" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/issues/4177" target="_blank" rel="noopener noreferrer">issue #4177</a>: we fixed an assertion failure in the <code>outbound-governor</code>; now
+we don&#x27;t try demoted peers which are being demoted already.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4155" target="_blank" rel="noopener noreferrer">PR #4155</a>: we refactored <code>ouroboros-network</code> packages.  There&#x27;s a top level
+<code>ouroboros-consensus-diffusion</code> package which integrates <code>network</code>
+&amp; <code>consensus</code> code.  We also introduced:</p><ul><li><code>ouroboros-network-api</code> package which contains the API shared between
+<code>network</code> &amp; <code>conensus</code>;</li><li><code>ouroboros-network-mock</code> package which contains mock API used for testing
+(e.g. a mock chain &amp; chain producer, etc.)</li><li><code>ouroboros-network-protocols</code> package which contains implementation of all
+(but <code>handshake</code>) mini-protocols, exposes a <code>testlib</code> and contains <code>test</code>
+and <code>cddl</code> components.</li></ul><p>This made the dependency tree of <code>network</code> &amp; <code>consensus</code> packages much
+cleaner.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4169" target="_blank" rel="noopener noreferrer">PR #4169</a>: we described the usage of release branches in <code>CONTRIBUTING.md</code>
+doc.</p></li><li><p><a href="https://github.com/input-output-hk/ouroboros-network/pull/4165" target="_blank" rel="noopener noreferrer">PR #4165</a>: we fixed <code>cardano-ping</code> support of <code>NodeToNodeV_10</code> protocol.</p></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="deltaq-1">DeltaQ<a class="hash-link" href="#deltaq-1" title="Direct link to heading">​</a></h3><p>The abstract of the talk:</p><blockquote><p>An essential step to ensuring that distributed systems are fit for
+purpose.</p><p>Distributed systems have become an integral part of our society and
+daily lives. We are, both implicitly and explicitly, individually as well as
+collectively, placing ever more trust in them.</p><p>Are they worthy of this trust?  Our need for them to be ‘fit-for-purpose’ goes
+well beyond notions of functional correctness (i.e. never getting the wrong
+answer). We need them to deliver the desired outcomes in a timely, robust,
+reliable, resilient fashion, at scale and in a sustainable way (both
+economically and environmentally).</p><p>This all sounds like a worthy aspiration, but what would be a practical
+approach to capturing and reasoning about these issues? How can we ensure that
+systems can meet their fit-for-purpose objectives, not just in their design but
+as they are deployed, encounter the imperfect world, are scaled to become
+economic, and proceed into ongoing maintenance?</p><p>This talk will illustrate how the notions of Outcomes and Quality Attenuation
+(as captured by ‘∆Q’) are being used to both frame the necessary notions and
+provide a basis for assuring the refinement and reification of such systems,
+from initial concept to operational infrastructure.</p></blockquote><p>You can download the slides from <a target="_blank" href="/cardano-updates/assets/files/2022-11-24-UCL-60c46564c5dee25b0060304c060ab1cf.pdf">here</a>.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/network">network</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-release">Node Release Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/disassembler.png" alt="Samuel Leathers"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/disassembler" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Samuel Leathers</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Manager</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="node-reelease-update">Node Reelease Update<a class="hash-link" href="#node-reelease-update" title="Direct link to heading">​</a></h2><h2 class="anchor anchorWithStickyNavbar_LWe7" id="2022-10-19---2022-11-02">2022-10-19 - 2022-11-02<a class="hash-link" href="#2022-10-19---2022-11-02" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="executive-summary">Executive Summary<a class="hash-link" href="#executive-summary" title="Direct link to heading">​</a></h3><p>The team is formalizing the new release process and team structure. Both preview/preprod environments have been reset,
+a temporary pv8 environment has been created for testing SECP before preview is updated to protocol version 8.</p><p>1.35.4 release candidates have been created and are being tested internally and externally.</p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="completed">Completed<a class="hash-link" href="#completed" title="Direct link to heading">​</a></h3><ul><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc1 tag</a></li><li><a href="https://github.com/input-output-hk/cardano-node/commits/1.35.4-rc1" target="_blank" rel="noopener noreferrer">1.35.4-rc2 tag (config changes only for preview)</a></li><li>[CHaP Migration]<!-- --> (<a href="https://github.com/input-output-hk/cardano-node/pull/4540" target="_blank" rel="noopener noreferrer">https://github.com/input-output-hk/cardano-node/pull/4540</a>)</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="in-progress">In Progress<a class="hash-link" href="#in-progress" title="Direct link to heading">​</a></h3><ul><li><p><a href="https://github.com/input-output-hk/cardano-node/commits/release/1.35" target="_blank" rel="noopener noreferrer">Release 1.35.4</a></p><ul><li><a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">Test Status</a></li></ul></li><li><p><a href="https://input-output-hk.github.io/cardano-updates/2022-08-12-sre" target="_blank" rel="noopener noreferrer">Cicero CI Migration</a></p></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/release">release</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>One post tagged with &quot;security&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-20-cip1694">Initial CIP 1694 Security Analysis and Responses</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-20T00:00:00.000Z" itemprop="datePublished">November 20, 2023</time> · <!-- -->6 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/kevinhammond.png" alt="Kevin Hammond"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/kevinhammond" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Kevin Hammond</span></a></div><small class="avatar__subtitle" itemprop="description">Head of Software Engineering, Cardano Core</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have undertaken an initial high-level security analysis of the CIP-1694 design.  We summarise the analysis and our responses here.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="initial-cip-1694-security-analysis-and-responses">Initial CIP-1694 Security Analysis and Responses<a class="hash-link" href="#initial-cip-1694-security-analysis-and-responses" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-the-constitutional-committee">Section: The constitutional committee<a class="hash-link" href="#section-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>“For example, if we consider the hypothetical Constitution rule &quot;The Cardano network must always be able to produce new blocks&quot; - In this example, if the governance action to reduce block size to 0 is passed, then there will be no way of passing or enacting further proposals. That is, this governance action is completely non-reversable. Suggestion: Instating a built-in mechanism that checks (and perhaps enforces) that the proposed governance actions, if passed, can be reverted in the future.</li></ul><p>There is a &#x27;guardrails document&#x27; in preparation which captures issues such as these.  Some of them may be automatable, as suggested; others will need to be evaluated by humans.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-size-of-the-constitutional-committee">Section: Size of the constitutional committee<a class="hash-link" href="#section-size-of-the-constitutional-committee" title="Direct link to heading">​</a></h3><hr><ul><li>A possible issue with very large committee sizes (or large number of proposals/voters in general) is that it may take longer to have votes appear on-chain, which in extreme cases may require longer voting periods.</li></ul><p>Thanks. Yes, we’ve been thinking about this issue for a long time, see for example the section ‘Final safety measure, post bootstrapping’. We don’t consider this as an issue for the CC since they need to be elected while DReps can just register, so we expect the number of CC members to be much less than the number of DReps</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-terms">Section: Terms<a class="hash-link" href="#section-terms" title="Direct link to heading">​</a></h3><hr><ul><li>The following sentence is a bit awkward to read: “For example, a committee of size five with a threshold of 3/5 a minimum size of three and two expired members can still pass governance actions if two non-expired members vote Yes.” —&gt; Suggestion: “For example, if we have a committee of size five with a threshold of 3/5, then a committee of three non-expired and two expired members can still pass governance actions if two non-expired members vote Yes.” </li></ul><p>Thanks. Yes, that suggestion is a bit easier to read.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-registered-dreps">Section: Registered DReps<a class="hash-link" href="#section-registered-dreps" title="Direct link to heading">​</a></h3><hr><ul><li>“Additionally, registered DReps will need to vote regularly to still be considered active.” - There is a minor issue with requiring “voting regularly”. That is, if there are no proposals to vote on for a long time, this means that no DRep can vote regularly (or they have to issue bogus proposals just to vote on them).</li></ul><p>Thanks. We’ve added a mechanism to prevent that issue in the spec/code where if there’s nothing to vote on for an entire epoch, we increment the epoch that each DRep expires.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-ratification">Section: Ratification<a class="hash-link" href="#section-ratification" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear why protocol changes: network group and technical group are two separate groups.</li></ul><p>These correspond exactly to the groups that are administered by the Parameter Committee.</p><hr><ul><li>I didn’t understand the rationale for requiring 100% “Yes” votes to pass “Info” type governance actions? It seems they have the least potential to harm the system.</li></ul><p>Yes, it’s not about harming the system, since <code>Info</code>
+actions have no direct effect on the operation of Cardano. The motivation is simply to record the actual level of support for the action. </p><p>Once an action is enacted it’s no longer possible to vote on it. So if there was e.g. a threshold of 50%, then there is no way of telling whether the support for it might eventually have reached 90% or higher if it was not immediately enacted when the threshold was reached.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-content">Section: Content<a class="hash-link" href="#section-content" title="Direct link to heading">​</a></h3><hr><ul><li>For Hard-fork initiation, the changed parameters should probably also be required as part of Additional data.</li></ul><p>Protocol parameters can be changed in arbitrary ways by the hard fork and new ones might be introduced, so anything this action pins down might not actually be the value that will be present after the hard fork.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-protocol-parameter-groups">Section: Protocol Parameter groups<a class="hash-link" href="#section-protocol-parameter-groups" title="Direct link to heading">​</a></h3><hr><ul><li>It is a bit unclear to the reader what some of these parameters mean, for example: monetary expansion (rho) and treasury expansion (tau). Suggestion: Include brief explanations for the non-obvious parameters.</li></ul><p>These are existing protocol parameters, described in e.g. <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">https://cips.cardano.org/cips/cip9/</a>9 or <a href="https://docs.cardano.org/explore-cardano/parameter-guide/#:~:text=Protocol%20parameters%20on%20Cardano%20are,to%20changing%20conditions%20over%20time." target="_blank" rel="noopener noreferrer">The Cardano Protocol Parameters Guide</a>.</p><hr><ul><li>With the current set of governance actions, it seems that it is not possible to add new types of protocol parameters, or categories of governance voting thresholds. Suggestion: Consider possibility of incorporating governance actions that allow addition of new protocol parameters, deletion of defunct protocol parameters, or modification of governance voting threshold categories. </li></ul><p>All of this needs to be done via a hard fork. If we had an action that added a parameter then there is no way of giving it semantics anyway, since that must be done by logic in the code.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-votes">Section: Votes<a class="hash-link" href="#section-votes" title="Direct link to heading">​</a></h3><hr><ul><li>Is a constitutional committee member also a DRep? If so, do they vote twice, once as a committee member and once as a DRep?</li></ul><p>They may or may not be (and they could also be an SPO). Note that this is fine, since these are completely separate tallies. This is also not preventable, since we don’t have an on-chain mechanism for identity. And yes, each credential gets to vote on each action for all roles in the governance system it has.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes">Section: Separation of Hard Fork Initiation from Standard Protocol Parameter Changes<a class="hash-link" href="#section-separation-of-hard-fork-initiation-from-standard-protocol-parameter-changes" title="Direct link to heading">​</a></h3><hr><ul><li>It is unclear whether there would be automated checks for whether a proposal is indeed a soft fork or hard fork, which would reduce human error in categorising proposals.</li></ul><p>There is no on-chain mechanism that could enforce this, the best we could do is some kind of certificate.  However, this may not be trustworthy, of course. We will consider this in future versions of Voltaire.</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-changes-post-edinburgh-workshop-july-2023">Section: Changes post Edinburgh workshop (July 2023)<a class="hash-link" href="#section-changes-post-edinburgh-workshop-july-2023" title="Direct link to heading">​</a></h3><hr><ul><li>“All governance actions are enacted one epoch after they are ratified.” - I’m not sure if this line is currently in the main body of the CIP?</li></ul><p>It is, but it is phrased differently: ‘All governance actions are enacted on the epoch boundary after their ratification.’</p><hr><h3 class="anchor anchorWithStickyNavbar_LWe7" id="section-reduced-deposits-for-some-government-actions">Section: Reduced deposits for some government actions<a class="hash-link" href="#section-reduced-deposits-for-some-government-actions" title="Direct link to heading">​</a></h3><hr><ul><li>Another downside of requiring endorsement from the constitutional committee is that this likely does not apply to constitutional committee-related proposals, such as no-confidence votes.</li></ul><p>Indeed. We have no plans for this at the moment.</p></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/ledger">ledger</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/cip-1694">cip1694</a></li><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/security">security</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>15 posts tagged with &quot;sre&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-24T00:00:00.000Z" itemprop="datePublished">November 24, 2023</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>The cardano-node nixos service now supports SIGHUP p2p topology reloading when the <code>useSystemdReload</code> option is enabled</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Update cardano-db-sync and offchain-metadata-tools package paths and/or references: <a href="https://github.com/input-output-hk/capkgs/compare/994696f...3ce364f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Optionally have cardano-node nixos service utilize SIGHUP p2p topology reload: <a href="https://github.com/input-output-hk/cardano-node/pull/5537" target="_blank" rel="noopener noreferrer">cardano-node-pull-5537</a><ul><li>Creates a useSystemdReload bool option for the cardano-node nixos service</li><li>This will move the topology file(s) to <code>/etc/cardano-node/topology-$i.yaml</code> and inject systemd reload hooks for p2p configured cardano-node instances</li><li>Moving topology files to <code>/etc</code> also allows for manual topology updates when a quick test is needed and full service re-deployment isn&#x27;t desired</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Adds a metadata server profile and a number of other features and improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/20" target="_blank" rel="noopener noreferrer">cardano-parts-pull-20</a><ul><li>Adds a new metadata-service profile</li><li>Adds metadata service and pkg configuration options for cardano-groups to utilize the metadata-server profile</li><li>Adds a cardano-webserver profile for multiple virtualHosts and TLS ACME server aliases for a cluster&#x27;s static needs, with each cached behind varnish</li><li>Adds extra node list producers and public producers for cardano-node-topology profile</li><li>Adds delegation amounts to cardano-postgres psql prepared query show_pools_block_history_in_epoch</li><li>Adds select systemd metrics reporting to grafana-agent profile</li><li>Adds a bookRelay multivalue DNS option to disambiguate with groupRelay multivalue DNS</li><li>Adds an opsLib library to the cardano-parts lib flakeModule and refactors some common code into it</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds job-gen-env-config for both release and pre-release configuration files to support configuration book generation</li><li>Adds support for grafana recording rules in the template files</li><li>Improves cardano-group profile handling of producers with respect to multiple instance nodes</li><li>Improves grafana-agent profile metrics handling for multi-instance cardano-node servers</li><li>Improves smash service preStart handling while waiting for a node socket</li><li>Updates Justfile for ERA_CMD demo support</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to grafana alert and recording rule templates</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Defaults cardano-postgres profile psqlrc use to false</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Adds a new testnet metadata server, cluster webserver, and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/6" target="_blank" rel="noopener noreferrer">cardano-playground-pull-6</a><ul><li>Adds a new metadata server</li><li>Adds a new webserver for the cluster&#x27;s static virtualhost needs</li><li>Adds support for sops secret traversing from target path up instead of cwd up, thereby supporting secrets use-cases outside of the repo</li><li>Adds systemd metrics monitoring to the cluster</li><li>Resizes sanchonet machines to support the growing chain</li><li>Completes migration of preprod from world</li><li>Updates groups to utilize both bookRelay and groupRelay multivalue DNS attributes</li><li>Updates Justfile for ERA_CMD demo support</li><li>Defaults to using an updated systemd reload nixos service feature for p2p networks in cardano-group profile</li><li>Migrates book static code to playground from world, with refactor, cleanup and updates</li><li>Migrates default grafana cloud node exporter, varnish alert and recording rules to declarative grafana alert and recording rules</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="offchain-metadata-tools">Offchain-metadata-tools<a class="hash-link" href="#offchain-metadata-tools" title="Direct link to heading">​</a></h3><ul><li>Adds db password option with obfuscation plus misc improvements: <a href="https://github.com/input-output-hk/offchain-metadata-tools/pull/61" target="_blank" rel="noopener noreferrer">offchain-metadata-tools-pull-61</a><ul><li>Adds db password connection option and obfuscates passwords in output for metadata server, sync, webhook services</li><li>Updates the nixos service for metadata-webhook service to optionally use an environmentFile for secrets: cfg.environmentFile</li><li>Moves from std use in the nix flake to standard flake schema</li><li>Fixes hydra CI failures</li><li>Builds update-docs in hydra to avoid long local build times</li><li>Removes deprecated tullia</li><li>Removes deprecated check-hydra from pkgs</li><li>Removes deprecated bors files and references</li></ul></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-11-10-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-11-10T00:00:00.000Z" itemprop="datePublished">November 10, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains have largely completed their migration to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Minor bug fix and db-sync sanchonet package update: <a href="https://github.com/input-output-hk/capkgs/compare/b1f1cbd...994696f" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General migration support PR for cardano-world to cardano-playground <a href="https://github.com/input-output-hk/cardano-parts/pull/18" target="_blank" rel="noopener noreferrer">cardano-parts-pull-18</a><ul><li>Iohk-nix and iohk-nix-ng were updated support the migration of cardano-world networks to cardano-playground</li><li>Sops-secrets dependent systemd services were fixed to ensure restart upon sops secrets changes</li><li>Db chain utilities (db-{analyser,synthesizer,truncater}) had -ng variants created to operate on both release and pre-release network chains</li><li>The profile-cardano-postgres nixos module received preset variables and prepared statements via pgsqlrc for faster and easier analysis of network state</li><li>The flakeModule jobs now has support for the cardano-cli era command in each of the job scripts by passing the $ERA_CMD variable</li><li>Default cardano-node-ng package is now 8.6.0-pre, dbsync on sanchonet is now sancho-2-2-0</li><li>For scripts using a nix-shell shebang, the cardano-parts devShell menu can be disabled from injecting itself into stdout by passing NOMENU=true</li><li>Template updates include:<ul><li>Adds optional TF AZ declaration on ec2 resources</li><li>Adds a cardano node p2p dashboard to the grafana cloud stack</li><li>Adds a dbsync pool performance analysis query</li><li>Updates python distribute and delegation scripts from world for playground compatibility</li><li>Starts a python script lib to reduce shared code among the python scripts</li><li>Several justfile improvements and new recipes</li></ul></li><li>More detail is available in the PR description</li></ul></li><li>Update submit action script for 8.6 <a href="https://github.com/input-output-hk/cardano-parts/pull/19" target="_blank" rel="noopener noreferrer">cardano-parts-pull-19</a></li><li>Update scripts for 8.6.0-pre <a href="https://github.com/input-output-hk/cardano-parts/pull/21" target="_blank" rel="noopener noreferrer">cardano-parts-pull-21</a><ul><li>Fixes subcommand names based on ERA_CMD</li><li>Adds deposits to some commands</li><li>Separates CC cold/hot key generation as host authorization has to occur after action is approved</li><li>CC voting enabled in vote job</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migration PR to largely complete the network migration from cardano-world to cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/5" target="_blank" rel="noopener noreferrer">cardano-playground-pull-5</a><ul><li>Adds re-spun private chain network</li><li>Migrates shelley-qa chain network from world</li><li>Justfile improvements and new recipes</li><li>Improve concurrent environment chain support</li><li>More detail is available in the PR description</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migration to play: <a href="https://github.com/input-output-hk/iohk-nix/pull/561" target="_blank" rel="noopener noreferrer">iohk-nix-pull-561</a><ul><li>Migrate cardano-lib networks from world.dev.cardano.org to play.dev.cardano.org</li><li>Remove deprecated cardano-lib p2p network environment</li><li>Update sanchonet chain with respin changes</li><li>Update private chain with respin changes</li><li>Bump private and shelley-qa chains to sanchonet equivalent conway genesis</li><li>Bump preview, preprod chains to sanchonet equivalent conway genesis for node 8.6.0-pre pre-release testing</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.6.0-pre demo: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/b54da94057ac0949421918208fd04795d029447d" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-27-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-27T00:00:00.000Z" itemprop="datePublished">October 27, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Cardano-world testnets of preprod, preview, sanchonet and some private test chains are in the process of being migrated to the <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> stack</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Adds offchain-metadata-tools, dbsync sanchonet updates: <a href="https://github.com/input-output-hk/capkgs/compare/b197e22...b1f1cbd" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>General package updates, modules improvements and template recipes to support network migration from world to playground <a href="https://github.com/input-output-hk/cardano-parts/pull/17" target="_blank" rel="noopener noreferrer">cardano-parts-pull-17</a><ul><li>Bumps cardano-db-sync-ng to sancho-2-0-0 tag</li><li>Bumps iohk-nix-ng to mig-sancho branch for sanchonet pool migration from world to play</li><li>Adds more machine system bins and devShell bins for scripting and debug purposes</li><li>Adds cardano-show-kes-period alias on any node machine importing profile-cardano-node-group module</li><li>Adds profile-cardano-node-topology module for a simplified interface to most common topology needs</li><li>Adds a job-delegate-rewards-stake-key job as an optional follow on to pool creation and registration jobs</li><li>Adds a topology function to filter self from group machines with an allowList for matching infixes</li><li>Adds metadata-server and related offchain-metadata-tools bins from capkgs</li><li>Updates justfile template with:<ul><li>a new query-all recipe for getting status of multiple concurrent running environments</li><li>a new set-default-cardano-env recipe for fast switching between environments</li><li>a new start-demo recipe for forking a custom env into conway</li><li>a new start-node recipe for generic environment start</li><li>a new stop-node recipe for generic environment stop</li><li>updated list-machines recipe for handling of empty nixos machine config and empty ssh_config conditions</li><li>updated query-tip recipe to a generic query tip compatible with each environment</li></ul></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Migrates sanchonet from world, prepares further migration and support automation: <a href="https://github.com/input-output-hk/cardano-playground/pull/4" target="_blank" rel="noopener noreferrer">cardano-playground-pull-4</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-10-13-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-10-13T00:00:00.000Z" itemprop="datePublished">October 13, 2023</time> · <!-- -->3 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.5.0-pre.</li><li>Cardano-parts now supports cardano-db-sync, cardano-smash, cardano-faucet and grafana cloud monitoring</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Various improvements and fixes including:<ul><li>Add GHA cron schedule</li><li>Add nix auto-gc to avoid running out of storage during large package set builds</li><li>Add new packages to capkgs</li><li>Reduce runner storage requirement leaving more room for builds</li><li>Restructure capkgs attribute names to avoid package name collisions</li><li>Return to non-musl builds for cardano packages to retain journald compatability</li><li>Update cache usage to from file level to folder level to reduce network and latency overhead</li><li>Commit diff: <a href="https://github.com/input-output-hk/capkgs/compare/a274b72...b197e22" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates cardano-node-ng to 8.5.0-pre and adds a Conway era automation job: <a href="https://github.com/input-output-hk/cardano-parts/pull/16" target="_blank" rel="noopener noreferrer">cardano-parts-pull-16</a></li><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-parts/pull/15" target="_blank" rel="noopener noreferrer">cardano-parts-pull-15</a><ul><li>Adds cardano-db-sync, cardano-faucet, cardano-postgres, cardano-smash, profiles and/or services and related changes</li><li>Adds nginx vhost metrics exporter profile</li><li>Adds smash registered-relay-dump service and exporter for use until legacy relay nodes are scaled down</li><li>Adds bash *-ng autocompletion compatible wrappers</li><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds downstream grafana cloud dashboard as templates</li><li>Adds downstream grafana cloud alerts as templates</li><li>Updates grafana-agent profile with new exporter scrape hooks: cardano-db-sync, cardano-faucet, nginx-vts, varnish</li><li>Updates the basic profile with IOG cache and commonly used bins</li><li>Updates the pre-release profile to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates flakeModule jobs with new conway era automation and additional IO encryption shimming and file type checks</li><li>Updates .sops.yaml template for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the Justfile template with terraform fixes for workspace switching and provider auto-reconfiguration</li><li>Updates the cloudFormation terraformState template with stack modifications to preserve all resources in case of deletion</li><li>Updates the colmena template with dbsync, smash, faucet machines profiles and roles</li><li>Improves prior cardano-postgres modules to now automatically tune pg parameters based on machine cpuCount, memMiB and desired conns</li><li>Bumps capkgs node-ng to 8.5.0-pre</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Dbsync, smash, faucet and more: <a href="https://github.com/input-output-hk/cardano-playground/pull/3" target="_blank" rel="noopener noreferrer">cardano-playground-pull-3</a><ul><li>Adds a list-machines just recipe using nushell dataframe outer joins and scj ssh_config parser for fast cluster evals of machine state overview</li><li>Adds dbsync, smash, faucet machines and corresponding metrics exporters, dashboards and alerts</li><li>Moves the flake.cardano-parts.cluster.group attrSet name to groups to accurately reflect the plurality and the upstream corresponding change</li><li>Optimizes machine sizes</li><li>Updates .sops.yaml for supporting faucet secrets, workbench secrets, state-demo secrets</li><li>Updates the cloudFormation terraformState file with stack modifications to preserve all resources in case of deletion</li><li>Updates the cluster isNg definition to support cardano-db-sync, cardano-faucet, cardano-smash *-ng versioning</li><li>Updates the Justfile with terraform fixes for workspace switching and provider auto-reconfiguration</li></ul></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.5.0: <a href="https://github.com/input-output-hk/cardano-world/commit/c8a480fa7cdb6eff4f8b4565450c57361ddfdec4" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Update for cardano-node 8.5.0, conway job recipes and cardano-parts interface changes: <a href="https://github.com/input-output-hk/sanchonet-demo/commit/4124465c0c663d11c8cf4ef80af18a5246f89b31" target="_blank" rel="noopener noreferrer">sanchonet-demo-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-29-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-29T00:00:00.000Z" itemprop="datePublished">September 29, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent changes, updates or improvements include:</p><ul><li>Sanchonet environment was re-spun starting from slot 7171200 and updated to cardano-node <a href="https://github.com/input-output-hk/cardano-node/releases/tag/8.4.0-pre" target="_blank" rel="noopener noreferrer">8.4.0-pre</a>.</li><li>The use of cardano-node <a href="https://hub.docker.com/r/inputoutput/cardano-node" target="_blank" rel="noopener noreferrer">docker hub</a> will be deprecated in preference of <a href="https://github.com/input-output-hk/cardano-node/pkgs/container/cardano-node" target="_blank" rel="noopener noreferrer">GHCR</a></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Refactor parsing scripts, add github action automation, various bugfixes and cleanup: <a href="https://github.com/input-output-hk/capkgs/compare/c2c7680...a274b72" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Updates secrets layout scheme, adds sops enc/dec for jobs, adds cloud monitoring profile, updates flake templates and other improvements/fixes: <a href="https://github.com/input-output-hk/cardano-parts/pull/14" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Updates for new cardano-parts secrets handling and layout, TF workspace handling, group multivalue DNS support, grafana cloud monitoring and other improvements: <a href="https://github.com/input-output-hk/cardano-playground/pull/2" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Update sanchonet network to cardano-node 8.4.0: <a href="https://github.com/input-output-hk/cardano-world/compare/8cb559a...3edafb9" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Rotate KES on shelley-qa: <a href="https://github.com/input-output-hk/cardano-world/commit/8301b044ad106ff8ca71dcbbdb5b17fe9ec6fc6d" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--next" href="/cardano-updates/tags/sre/page/2"><div class="pagination-nav__label">Older Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>15 posts tagged with &quot;sre&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-15-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-15T00:00:00.000Z" itemprop="datePublished">September 15, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet environment was updated to 8.3.0-pre.</li><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">Cardano-parts</a> now enables downstream consumers to spin up multiple cardano-networks per repository, an example of which is <a href="https://github.com/input-output-hk/cardano-playground/blob/main/flake/colmena.nix#L89-L108" target="_blank" rel="noopener noreferrer">here</a>.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Add a readme, optimize flake inputs, improve nu and ruby parsing scripts: <a href="https://github.com/input-output-hk/capkgs/compare/f3dcffb...c2c7680" target="_blank" rel="noopener noreferrer">capkgs-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Adjust mainnet p2p relays to ~100%, with a legacy canary: <a href="https://github.com/input-output-hk/cardano-ops/commit/d3cce2585fae6a52ff5833373137af3cddbc6710" target="_blank" rel="noopener noreferrer">cardano-ops-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Utilize content addressed binaries to significantly improve eval, build and devShell performance: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Add an aws flakeModule for obtaining ec2 specs, fix node.socket devShell error: <a href="https://github.com/input-output-hk/cardano-parts/pull/10" target="_blank" rel="noopener noreferrer">cardano-parts-pull-10</a></li><li>Fix warns thrown during some builds and devShell usage: <a href="https://github.com/input-output-hk/cardano-parts/pull/11" target="_blank" rel="noopener noreferrer">cardano-parts-pull-11</a></li><li>Add flakeModules and nixosModules in preparation for cardano-node grouped deployments: <a href="https://github.com/input-output-hk/cardano-parts/pull/12" target="_blank" rel="noopener noreferrer">cardano-parts-pull-12</a></li><li>Enable group deployments by: adding several module, profile and role nixosModules; updating flakeModules; adding sops age secrets handling: <a href="https://github.com/input-output-hk/cardano-parts/pull/13" target="_blank" rel="noopener noreferrer">cardano-parts-pull-13</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Modify the wireguard network from mesh to star, enable ICMP, enable Nomad raw_exec and add hydraJobs: <a href="https://github.com/input-output-hk/cardano-perf/compare/9f9917c...7fc1b4c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>Define preliminary cardano-world networks on cardano-playground: <a href="https://github.com/input-output-hk/cardano-playground/pull/1" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Rotate KES on preview and preprod, purge unused subnets, adjust explorer rate limits: <a href="https://github.com/input-output-hk/cardano-world/compare/306ef6c...e9b2ed2" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li><li>Update sanchonet network to 8.3.0: <a href="https://github.com/input-output-hk/cardano-world/compare/master...sanchonet-updated" target="_blank" rel="noopener noreferrer">cardano-world-compare</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-09-01-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-09-01T00:00:00.000Z" itemprop="datePublished">September 1, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Work on cardano-parts repo continues and was utilized by the sanchonet-demo repository for demonstration purposes</li><li>Work on a new <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a> repository started -- &quot;Content Addressed Packages&quot;<ul><li>This repository provides common Cardano release and pre-release binaries in a pure content addressed nix package type via flake output</li><li>These packages don&#x27;t have the associated IFD, long eval times and large source dependencies that the originating source repositories often do</li><li>Consumers of such packages, such as devShells or nixos machines, can benefit from the improved performance this offers</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="capkgs">Capkgs<a class="hash-link" href="#capkgs" title="Direct link to heading">​</a></h3><ul><li>Content addressed packages -- new repo: <a href="https://github.com/input-output-hk/capkgs" target="_blank" rel="noopener noreferrer">capkgs</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay updates, dbSync snapshots server update, monitoring adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/5a0eabe...03e8e42" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>Flake devShell module improvements: <a href="https://github.com/input-output-hk/cardano-parts/pull/4" target="_blank" rel="noopener noreferrer">cardano-parts-pull-4</a></li><li>Cardano-world entrypoints migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/5" target="_blank" rel="noopener noreferrer">cardano-parts-pull-5</a></li><li>Cardano-world jobs migrated to flake parts module: <a href="https://github.com/input-output-hk/cardano-parts/pull/6" target="_blank" rel="noopener noreferrer">cardano-parts-pull-6</a></li><li>Drep delegation fixups: <a href="https://github.com/input-output-hk/cardano-parts/pull/7" target="_blank" rel="noopener noreferrer">cardano-parts-pull-7</a></li><li>Utilize content addressed binaries, WIP: <a href="https://github.com/input-output-hk/cardano-parts/pull/8" target="_blank" rel="noopener noreferrer">cardano-parts-pull-8</a></li><li>Cardano-node module preparation branch, WIP: <a href="https://github.com/input-output-hk/cardano-parts/compare/capkgs...node-module" target="_blank" rel="noopener noreferrer">cardano-parts-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Availability zone pinning and explorer mods: <a href="https://github.com/input-output-hk/cardano-perf/compare/d3a8644...9f9917c" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Remove performance nodes for migration to cardano-perf: <a href="https://github.com/input-output-hk/cardano-world/commit/306ef6c6dd6c09d9b90b9768f2b84a1d05cded26" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="sanchonet-demo">Sanchonet-demo<a class="hash-link" href="#sanchonet-demo" title="Direct link to heading">​</a></h3><ul><li>Sanchonet demonstration repository: <a href="https://github.com/input-output-hk/sanchonet-demo" target="_blank" rel="noopener noreferrer">sanchonet-demo</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-18-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-18T00:00:00.000Z" itemprop="datePublished">August 18, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Sanchonet and shelley-qa environments were updated to 8.2.1-pre.</li><li>Work on two new repos utilizing <a href="https://flake.parts" target="_blank" rel="noopener noreferrer">flake parts</a> for cardano cluster generation, automation and operation.<ul><li><a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a> -- Nix flake parts for cardano clusters</li><li><a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a> -- Cardano testnet clusters</li></ul></li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Cardano p2p relay and alert threshold adjustments: <a href="https://github.com/input-output-hk/cardano-ops/compare/c4a04cc...5a0eabe" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-parts">Cardano-parts<a class="hash-link" href="#cardano-parts" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-parts" target="_blank" rel="noopener noreferrer">cardano-parts</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>Misc improvements to perf cluster functionality: <a href="https://github.com/input-output-hk/cardano-perf/compare/0944c40...d3a8644" target="_blank" rel="noopener noreferrer">cardano-perf-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-playground">Cardano-playground<a class="hash-link" href="#cardano-playground" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-playground" target="_blank" rel="noopener noreferrer">cardano-playground</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Improve explorer topology generation alerting: <a href="https://github.com/input-output-hk/cardano-world/pull/109" target="_blank" rel="noopener noreferrer">cardano-world-pull-109</a></li><li>Update p2p configs: <a href="https://github.com/input-output-hk/cardano-world/pull/110" target="_blank" rel="noopener noreferrer">cardano-world-pull-110</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="inputs-check">Inputs-check<a class="hash-link" href="#inputs-check" title="Direct link to heading">​</a></h3><ul><li>A flake parts module to check input closure sizes recursively for optimization considerations: <a href="https://github.com/input-output-hk/inputs-check" target="_blank" rel="noopener noreferrer">inputs-check</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-08-04-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-08-04T00:00:00.000Z" itemprop="datePublished">August 4, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent updates or improvements include:</p><ul><li>Preprod and preview envionments were updated to 8.1.2.</li><li>Sanchonet and shelley-qa environments were updated to 8.2.0-pre.</li><li>Work on a new cardano performance repo which utilizes a lightweight Cloudformation/Rain to Terraform infra bootstrap and Nomad environment has begun.</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, merge p2p modifications, script fixes and cleanup: <a href="https://github.com/input-output-hk/cardano-ops/pull/416" target="_blank" rel="noopener noreferrer">cardano-ops-pull-416</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-perf">Cardano-perf<a class="hash-link" href="#cardano-perf" title="Direct link to heading">​</a></h3><ul><li>New repo: <a href="https://github.com/input-output-hk/cardano-perf" target="_blank" rel="noopener noreferrer">cardano-perf-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Deploy cardano-node 8.1.2, emurgo p2p config, optimize faucet resources: <a href="https://github.com/input-output-hk/cardano-world/pull/104" target="_blank" rel="noopener noreferrer">cardano-world-pull-104</a></li><li>Resolve nomad segfaults via nix versioning and fixup dbSync metal job for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/105" target="_blank" rel="noopener noreferrer">cardano-world-pull-105</a></li><li>Add nomad dbSync fix for iohkNix env update: <a href="https://github.com/input-output-hk/cardano-world/pull/106" target="_blank" rel="noopener noreferrer">cardano-world-pull-106</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-21-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-21T00:00:00.000Z" itemprop="datePublished">July 21, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Re-spin sanchonet for testing a new node version followed by fork to Conway</li><li>Deploying a sanchonet compatible faucet to sanchonet</li><li>Migrate shelley qa legacy environment to cardano-world</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Bump iohk-nix for sanchonet and shelley qa environment updates: <a href="https://github.com/input-output-hk/cardano-node/pull/5406" target="_blank" rel="noopener noreferrer">cardano-node-pull-5406</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Mainnet relays are 50% migrated to p2p topology and 1 relay per region dedicated for ledger peers: <a href="https://github.com/input-output-hk/cardano-ops/compare/31cce1a...496f085" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node p2p all local roots entrypoint option was added: <a href="https://github.com/input-output-hk/cardano-world/pull/102" target="_blank" rel="noopener noreferrer">cardano-world-pull-102</a></li><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/103" target="_blank" rel="noopener noreferrer">cardano-world-pull-103</a></li><li>Create a sanchonet compatible faucet: <a href="https://github.com/input-output-hk/cardano-world/pull/91" target="_blank" rel="noopener noreferrer">cardano-world-pull-91</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Migrate shelley qa legacy environment to cardano-world: <a href="https://github.com/input-output-hk/iohk-nix/pull/549" target="_blank" rel="noopener noreferrer">iohk-nix-pull-549</a></li><li>Drop legacy byron environment parameters: <a href="https://github.com/input-output-hk/iohk-nix/pull/550" target="_blank" rel="noopener noreferrer">iohk-nix-pull-550</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/sre"><div class="pagination-nav__label">Newer Entries</div></a><a class="pagination-nav__link pagination-nav__link--next" 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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>15 posts tagged with &quot;sre&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-07-07-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-07-07T00:00:00.000Z" itemprop="datePublished">July 7, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on cardano environment improvements, supporting CI improvements, and general environment maintenance.</p><p>Some notable recent improvements include:</p><ul><li>Improved cardano-node entrypoint handling to allow for clean restarts in the Nomad environment</li><li>Explorer component updates</li><li>Spongix caching server rewrite for R2 Cloudflare support and various performance improvements</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Nixos service update to enable non-systemd socket activation multi-node relays: <a href="https://github.com/input-output-hk/cardano-node/pull/5360" target="_blank" rel="noopener noreferrer">cardano-node-pull-5360</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ogmios">Cardano-ogmios<a class="hash-link" href="#cardano-ogmios" title="Direct link to heading">​</a></h3><ul><li>Cardano ogmios bump to 5.6.0 for nixos service: <a href="https://github.com/input-output-hk/cardano-ogmios/pull/6" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-6</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Improve storage resize script, workaround systemd node signal handling, rescale p2p relays: <a href="https://github.com/input-output-hk/cardano-ops/compare/88a17c9...dfde751" target="_blank" rel="noopener noreferrer">cardano-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-rosetta">Cardano-rosetta<a class="hash-link" href="#cardano-rosetta" title="Direct link to heading">​</a></h3><ul><li>Cardano-rosetta nixos modifications for rosetta 2.1.0 service: <a href="https://github.com/cardano-foundation/cardano-rosetta/pull/532" target="_blank" rel="noopener noreferrer">cardano-rosetta-pull-532</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Cardano-node entrypoint improvements: <a href="https://github.com/input-output-hk/cardano-world/pull/99" target="_blank" rel="noopener noreferrer">cardano-world-pull-99</a></li><li>Further automate pool performance SQL query: <a href="https://github.com/input-output-hk/cardano-world/pull/100" target="_blank" rel="noopener noreferrer">cardano-world-pull-100</a></li><li>Performance and benchmark job related tweaks: <a href="https://github.com/input-output-hk/cardano-world/commit/02f1ba424d3e36bd114df6f53b769d2cd25301c3" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Explorer related component version bumps and traefik definition handline: <a href="https://github.com/input-output-hk/cardano-world/pull/101" target="_blank" rel="noopener noreferrer">cardano-world-pull-101</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>Spongix caching server rewrite for Cloudflare R2 backend support plus misc improvements: <a href="https://github.com/input-output-hk/spongix/compare/afd77728f5823d61732425df52a363949096e163...4890ff93308f45584bea8443cc13fbc16c8ce911" target="_blank" rel="noopener noreferrer">spongix-simple-branch</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-23-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-23T00:00:00.000Z" itemprop="datePublished">June 23, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include:</p><ul><li>A devx-ci cluster containing a Hydra build server and Linux build farm was stood up and is intended to replace Cicero functionality</li><li>Cardano Sanchonet environment was stood up to test Conway era functionality</li><li>Cardano-node nixos service was updated to support the latest p2p topology format and non-systemd socket activation use case</li><li>Cardano-node 8.1.1 was deployed to preview, preprod and mainnet environments</li></ul><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node nixos service for updated p2p topology and non-systemd socket activation: <a href="https://github.com/input-output-hk/cardano-node/pull/5318" target="_blank" rel="noopener noreferrer">cardano-node-pull-5318</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Updates required for node 8.1.1 nixos service: <a href="https://github.com/input-output-hk/cardano-ops/pull/414" target="_blank" rel="noopener noreferrer">cardano-ops-pull-414</a></li><li>Work in progress continues on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/tree/ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-ops-local</a>, <a href="https://github.com/input-output-hk/cardano-ops/tree/mn-mixed-p2p" target="_blank" rel="noopener noreferrer">cardano-ops-mn-mixed-p2p</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/cardano-world/pull/96" target="_blank" rel="noopener noreferrer">cardano-world-pull-96</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for legacy darwin <a href="https://github.com/input-output-hk/ci-ops/compare/b158b17...ed875b9" target="_blank" rel="noopener noreferrer">ci-ops-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Add devx-ci cluster integration for caching, monitoring during cicero to devx-ci transition: <a href="https://github.com/input-output-hk/ci-world/compare/840cdb6...b08c250" target="_blank" rel="noopener noreferrer">ci-world-compare</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="devx-ci">Devx-ci<a class="hash-link" href="#devx-ci" title="Direct link to heading">​</a></h3><ul><li>A CI cluster with a hydra build server was stood up and is intended to replace usage of Cicero: <a href="https://github.com/input-output-hk/devx-ci" target="_blank" rel="noopener noreferrer">devx-ci-repo</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Add Sanchonet environment: <a href="https://github.com/input-output-hk/iohk-nix/pull/545" target="_blank" rel="noopener noreferrer">iohk-nix-pull-545</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/johnalotoski.png" alt="John Lotoski"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/johnalotoski" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">John Lotoski</span></a></div><small class="avatar__subtitle" itemprop="description">Service Reliability Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on CI and cardano environment improvements.  Some notable recent improvements include: expanding the darwin CI cluster and providing new aarch64 builder support; adding bare metal bitte cluster capability with network overlay for high IOPS workload performance, such as explorer.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Equinix bare metal capability was added to bitte: <a href="https://github.com/input-output-hk/bitte/pull/194" target="_blank" rel="noopener noreferrer">bitte-pull-194</a></li><li>Update bitte nixpkgs, nix version, nomad driver, equinix lifecycle, misc bug fixes: <a href="https://github.com/input-output-hk/bitte/pull/201" target="_blank" rel="noopener noreferrer">bitte-pull-201</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-cells">Bitte-cells<a class="hash-link" href="#bitte-cells" title="Direct link to heading">​</a></h3><ul><li>Improvements made for patroni cluster recovery of large databases: <a href="https://github.com/input-output-hk/bitte-cells/compare/main...patroni-flex" target="_blank" rel="noopener noreferrer">bitte-cells-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-graphql">Cardano-graphql<a class="hash-link" href="#cardano-graphql" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql and nixos service: <a href="https://github.com/input-output-hk/cardano-graphql/pull/815" target="_blank" rel="noopener noreferrer">cardano-graphql-pull-815</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-node">Cardano-node<a class="hash-link" href="#cardano-node" title="Direct link to heading">​</a></h3><ul><li>Update cardano-node to use the updated iohk-nix environments: <a href="https://github.com/input-output-hk/cardano-node/pull/5241" target="_blank" rel="noopener noreferrer">cardano-node-pull-5241</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-ops">Cardano-ops<a class="hash-link" href="#cardano-ops" title="Direct link to heading">​</a></h3><ul><li>Update cardano-graphql, adds monitoring improvements and misc bug fixes: <a href="https://github.com/input-output-hk/cardano-ops/pull/411" target="_blank" rel="noopener noreferrer">cardano-ops-pull-411</a></li><li>Work in progress on mixed legacy and p2p topology clusters in cardano-ops: <a href="https://github.com/input-output-hk/cardano-ops/compare/master...ops-local" target="_blank" rel="noopener noreferrer">cardano-ops-branch</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">Cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Add a declarative cardano-faucet dashboard: <a href="https://github.com/input-output-hk/cardano-world/commit/e7d40d34aff52bbeb309f87939bd0d40f585e60a" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Remove a requirement for root user in Nomad docker images: <a href="https://github.com/input-output-hk/cardano-world/pull/68" target="_blank" rel="noopener noreferrer">cardano-world-pull-68</a></li><li>Enable explorer in cardano-world for high IOPS metal access: <a href="https://github.com/input-output-hk/cardano-world/pull/69" target="_blank" rel="noopener noreferrer">cardano-world-pull-69</a></li><li>Migrate explorer cluster to cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/75" target="_blank" rel="noopener noreferrer">cardano-world-pull-75</a></li><li>Migrate testnet metadata server to cardano-world, cleanup envs: <a href="https://github.com/input-output-hk/cardano-world/pull/77" target="_blank" rel="noopener noreferrer">cardano-world-pull-77</a></li><li>Add a faucet restore delegation script to cardano-world for non-functioning delegated pools: <a href="https://github.com/input-output-hk/cardano-world/pull/79" target="_blank" rel="noopener noreferrer">cardano-world-pull-79</a></li><li>Integrate node 8.x into cardano-world: <a href="https://github.com/input-output-hk/cardano-world/pull/84" target="_blank" rel="noopener noreferrer">cardano-world-pull-84</a></li><li>Update cardano-world to use iohk-nix for node environments: <a href="https://github.com/input-output-hk/cardano-world/pull/87" target="_blank" rel="noopener noreferrer">cardano-world-pull-87</a></li><li>Create a stakepool analysis query for cluster pool performance overview: <a href="https://github.com/input-output-hk/cardano-world/commit/64fe3b9d4067c24eef028ac1c561d6f9a7d5a9a8" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Added an iptables fixup script for broken bridged networking nomad jobs: <a href="https://github.com/input-output-hk/cardano-world/commit/02550206e4e34d121135794b6e54084635e55a50" target="_blank" rel="noopener noreferrer">cardano-world-commit</a></li><li>Improve cardano-world job automation with additional parameterization: <a href="https://github.com/input-output-hk/cardano-world/pull/92" target="_blank" rel="noopener noreferrer">cardano-world-pr-92</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/cardano-world/pull/93" target="_blank" rel="noopener noreferrer">cardano-world-pr-93</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-ops">Ci-ops<a class="hash-link" href="#ci-ops" title="Direct link to heading">​</a></h3><ul><li>Update legacy darwin builders and buildkite agent for ci-world network overlay and monitoring: <a href="https://github.com/input-output-hk/ci-ops/pull/108" target="_blank" rel="noopener noreferrer">ci-ops-pull-108</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">Ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Resolve ci-world linux buildkite agent cleanup bug: <a href="https://github.com/input-output-hk/ci-world/commit/3d053b202a6e40fab23db49801de7d6e580fab1f" target="_blank" rel="noopener noreferrer">ci-world-commit</a></li><li>Integrate new darwin builders into ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/22" target="_blank" rel="noopener noreferrer">ci-world-pull-22</a></li><li>Migrate patroni HA db to it&#x27;s own namespace in ci-world: <a href="https://github.com/input-output-hk/ci-world/pull/24" target="_blank" rel="noopener noreferrer">ci-world-pull-24</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Implement a cicero webhook backoff with exponential decay plus jitter: <a href="https://github.com/input-output-hk/cicero/pull/79" target="_blank" rel="noopener noreferrer">cicero-pull-79</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="iohk-nix">Iohk-nix<a class="hash-link" href="#iohk-nix" title="Direct link to heading">​</a></h3><ul><li>Update iohk-nix to be source of truth for node environments: <a href="https://github.com/input-output-hk/iohk-nix/pull/534" target="_blank" rel="noopener noreferrer">iohk-nix-pull-534</a></li><li>Update preview network experimental config defaults: <a href="https://github.com/input-output-hk/iohk-nix/pull/544" target="_blank" rel="noopener noreferrer">iohk-nix-pull-544</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">Openziti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Add darwin intel and arm support to ziti-edge-tunnel nix modules: <a href="https://github.com/johnalotoski/openziti-bins/pull/1" target="_blank" rel="noopener noreferrer">openziti-bins-pull-1</a></li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-20-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-20T00:00:00.000Z" itemprop="datePublished">January 20, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team continues work on Cicero, Tullia, and Bitte, as well as providing
+support for cardano-world.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero">Cicero<a class="hash-link" href="#cicero" title="Direct link to heading">​</a></h3><ul><li>Fixed various race conditions around transformers.</li><li>Brought our CI up to date.</li><li>Migrated to the Nomad exec driver with Nix support for many actions.</li><li>Moved Nix builds to the Nomad clients for much better cache locality.</li><li>Ongoing work on vastly improving the action matching and evaluation speed.</li><li></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="tullia">Tullia<a class="hash-link" href="#tullia" title="Direct link to heading">​</a></h3><ul><li>Made it easier to support cloning from a PR&#x27;s fork</li><li>Update to latest std</li><li>Add workaround for cgroup issue: <a href="https://github.com/hashicorp/nomad/issues/12877" target="_blank" rel="noopener noreferrer">nomad#12877</a></li><li>github preset: add <code>github.ci.remote</code> and <code>(read|get)Repository</code> functions</li><li>Fix various issues around CUE handling</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte">Bitte<a class="hash-link" href="#bitte" title="Direct link to heading">​</a></h3><ul><li>Upgrade to NixOS 22.11</li><li>Prototype usage of <a href="https://colmena.cli.rs" target="_blank" rel="noopener noreferrer">Colmena</a> for deploys instead of <a href="https://github.com/serokell/deploy-rs" target="_blank" rel="noopener noreferrer">deploy-rs</a></li><li>Finalized work on Equinix Metal support</li><li>Prototype better secrets management with <a href="https://github.com/yaxitech/ragenix" target="_blank" rel="noopener noreferrer">ragenix</a> instead of <a href="https://github.com/Mic92/sops-nix" target="_blank" rel="noopener noreferrer">sops-nix</a></li><li>Improve CI and bring it up to date</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cardano-world">cardano-world<a class="hash-link" href="#cardano-world" title="Direct link to heading">​</a></h3><ul><li>Fixd various OOM issues on preview and preprod</li><li>Rotated KES keys on preview and preprod</li><li>Optimize mainnet db-sync to cope with higher load</li><li>Fix an issue where PostgreSQL would fail after a reboot</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bitte-world">bitte-world<a class="hash-link" href="#bitte-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="ci-world">ci-world<a class="hash-link" href="#ci-world" title="Direct link to heading">​</a></h3><ul><li>Updated to NixOS 22.11</li><li>Added Equnix cluster</li><li>Improve caching of Nix builds</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-08-12-sre">SRE Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-10-28T00:00:00.000Z" itemprop="datePublished">October 28, 2022</time> · <!-- -->4 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/manveru.png" alt="Michael Fellinger"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/manveru" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Michael Fellinger</span></a></div><small class="avatar__subtitle" itemprop="description">SRE Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>The SRE team is heavily working on the Equinix Metal migration, replacing Hydra
+with Cicero, and a new version of Spongix.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="lower-level-summary">Lower level summary<a class="hash-link" href="#lower-level-summary" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="openziti">OpenZiti<a class="hash-link" href="#openziti" title="Direct link to heading">​</a></h3><ul><li>Work is ongoing on our OpenZiti integration into Bitte in [<a href="https://github.com/input-output-hk/bitte/compare/zt" target="_blank" rel="noopener noreferrer">bitte-zt</a>].</li><li>CI-World deployment of Darwin CI Ziti service in [<a href="https://github.com/input-output-hk/ci-world/commit/d40f4d19187a2128b6f0d63bde7e3f9a33071994" target="_blank" rel="noopener noreferrer">ci-world-commit-d40f4d</a>].</li><li>Multiple issues filed, and a lot of discussion with the OpenZiti developers,
+we&#x27;re making pretty rapid progress thanks to them.</li><li>Work on getting Equinix baremetal machines integrated into AWS World Bitte
+clusters utilizing a Ziti ZTNA network overlay to bridge the networking of
+the two environments and get IAM extension to Equinix machine for Nomad
+client onboarding.</li><li>A Nix Flake for most of our OpenZiti dependencies including the Console,
+Controller, Edge Tunnel, and Router is now at [<a href="https://github.com/johnalotoski/openziti-bins" target="_blank" rel="noopener noreferrer">openziti-bins</a>].</li><li>The Flake also includes a WiP NixOS modules for these components.</li><li>Tested Ziti Desktop Edge official app for Darwin x86_64 w/ GUI -- works with
+no issues seen so far</li><li>Moved the console to traefik routing service (<code>zac.$DOMAIN</code>) and
+controller/edge router stay at <code>zt.$DOMAIN</code>, but have registered consul
+services</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-integrations">Cicero &amp; Tullia Integrations<a class="hash-link" href="#cicero--tullia-integrations" title="Direct link to heading">​</a></h3><ul><li>Added webhook for [<a href="https://github.com/input-output-hk/haskell.nix" target="_blank" rel="noopener noreferrer">haskell.nix</a>].</li><li>Finished Cicero CI action for [<a href="https://github.com/input-output-hk/cardano-addresses/pull/205" target="_blank" rel="noopener noreferrer">cardano-addresses-pull-205</a>].</li><li>Fixed cardano-prelude cicero action in [<a href="https://github.com/input-output-hk/cardano-prelude/pull/176#issuecomment-1280947946" target="_blank" rel="noopener noreferrer">cardano-prelude-pull-176</a>].</li><li>Fixed the <code>abcird-stdlib/publish</code> action [<a href="https://github.com/input-output-hk/abcirdc/pull/104" target="_blank" rel="noopener noreferrer">abcirdc-pull-104</a>]</li><li>fix error on vm-bigdisk flake configs [<a href="https://github.com/input-output-hk/cicero/pull/66" target="_blank" rel="noopener noreferrer">cicero-pull-66</a>].</li><li>Helped with Cicero actions and answered questions for [<a href="https://github.com/input-output-hk/plutus" target="_blank" rel="noopener noreferrer">plutus</a>]
+[<a href="https://github.com/input-output-hk/cardano-prelude" target="_blank" rel="noopener noreferrer">cardano-prelude</a>], and [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>].</li><li>Merged [<a href="https://github.com/input-output-hk/cardano-base/pull/323" target="_blank" rel="noopener noreferrer">cardano-base-pull-323</a>] for Tullia on cardano-base.</li><li>Merged Cicero action in [<a href="https://github.com/input-output-hk/cardano-ogmios/pull/5" target="_blank" rel="noopener noreferrer">cardano-ogmios-pull-5</a>].</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-explorer-app/pull/427" target="_blank" rel="noopener noreferrer">cardano-explorer-app-pull-427</a>] to add Tullia and Cicero.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-ledger/pull/3097" target="_blank" rel="noopener noreferrer">cardano-ledger-pull-3097</a>] to add Cicero CI action.</li><li>Opened [<a href="https://github.com/input-output-hk/cardano-node/pull/4489" target="_blank" rel="noopener noreferrer">cardano-node-pull-4489</a>] to add Tullia and Cicero, including
+OS-agnostic jobs.</li><li>Opened [<a href="https://github.com/input-output-hk/ouroboros-network/pull/4108" target="_blank" rel="noopener noreferrer">ouroboros-network-pull-4108</a>] to add Cicero action.</li><li>Reviewed [<a href="https://github.com/input-output-hk/plutus/pull/4918" target="_blank" rel="noopener noreferrer">plutus-pull-4918</a>] and helped test it.</li><li>Update Tullia in [<a href="https://github.com/input-output-hk/abcirdc/pull/97" target="_blank" rel="noopener noreferrer">abcirdc-pull-97</a>] to build if a tag is given.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="cicero--tullia-features">Cicero &amp; Tullia Features<a class="hash-link" href="#cicero--tullia-features" title="Direct link to heading">​</a></h3><ul><li>Improvements to Tullia task aggregation to make [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>] build
+correctly.</li><li>Better tullia CUE lib default for tags [<a href="https://github.com/input-output-hk/tullia/commit/4df3c5d956f1b062b950643da12768ae71acf245" target="_blank" rel="noopener noreferrer">tullia-commit-4df3c5d</a>].</li><li>Put <code>cache.nixos.org</code> back in <code>cache.iog.io</code>&#x27;s upstreams. This is now
+considered a public cache again, and without it some Cicero evaluations had
+to build huge packages.</li><li>Started working on a flake-parts module for Tullia.</li><li>Started working on cutting down Tullia task build time by putting facts in
+JSON files.</li><li>Fixed running into kernel arg limit by reading tullia&#x27;s DAG from a file</li><li>Merged [<a href="https://github.com/input-output-hk/tullia/pull/9" target="_blank" rel="noopener noreferrer">tullia-pull-9</a>] that fixes several issues related to error reporting.
+and escaping.</li><li>Added Mac builders in Cicero on CI-World.</li><li>Started work on Tullia invocation caching.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="spongix">Spongix<a class="hash-link" href="#spongix" title="Direct link to heading">​</a></h3><ul><li>A lot of progress on an SQlite backed version of Spongix, it already supports
+the full HTTP binary cache protocol but still lacks comprehensive testing and
+some tuning, as well as recursive lookups.</li><li>First steps in the implementation of the <code>nix-daemon</code> <code>ssh-ng</code> protocol so
+Spongix can be used via SSH and we can get rid of basic auth.</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="bugs">Bugs<a class="hash-link" href="#bugs" title="Direct link to heading">​</a></h3><ul><li>Discovered Cicero bug where Nomad reschedules cause the Github commit status
+to get stuck in <code>pending</code></li><li>Discovered Cicero race condition bug around concurrent transactions for
+codependent actions.</li><li>Fixed tullia task order bug in [<a href="https://github.com/input-output-hk/cardano-addresses" target="_blank" rel="noopener noreferrer">cardano-addresses</a>]</li><li>Diagnose Cicero action not triggered in [<a href="https://github.com/input-output-hk/abcirdc" target="_blank" rel="noopener noreferrer">abcirdc</a>]</li><li>Fixed meta/description of the Tullia package in [<a href="https://github.com/input-output-hk/tullia/pull/7" target="_blank" rel="noopener noreferrer">tullia-pull-7</a>]</li><li>Add Vault token loop alerts in [<a href="https://github.com/input-output-hk/bitte-cells/pull/40" target="_blank" rel="noopener noreferrer">bitte-cells-pull-40</a>]</li><li>Ongoing investigation on recurring Patroni and nomad-follower issues related
+to token rotation.</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/sre">sre</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"><a class="pagination-nav__link pagination-nav__link--prev" href="/cardano-updates/tags/sre/page/2"><div class="pagination-nav__label">Newer Entries</div></a></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. Built with Docusaurus.</div></div></div></footer></div>
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class="sidebarItemTitle_pO2u margin-bottom--md">Recent Posts</div><ul class="sidebarItemList_Yudw clean-list"><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-06-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-04-performance-and-tracing">Performance &amp; Tracing Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-12-01-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-consensus">Consensus Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-29-mithril">Mithril Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-hydra">Hydra Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-24-sre">SRE Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-ledger">Ledger Team Update</a></li><li class="sidebarItem__DBe"><a class="sidebarItemLink_mo7H" href="/cardano-updates/2023-11-22-mithril">Mithril Team Update</a></li></ul></nav></aside><main class="col col--7" itemscope="" itemtype="http://schema.org/Blog"><header class="margin-bottom--xl"><h1>5 posts tagged with &quot;system-test&quot;</h1><a href="/cardano-updates/tags">View All Tags</a></header><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-06-08-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-06-08T00:00:00.000Z" itemprop="datePublished">June 8, 2023</time> · <!-- -->2 min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-03-26) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.7</em> and <em>8.0.0</em> releases.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?page=1&amp;q=is%3Apr+is%3Aclosed+updated%3A2023-03-26..2023-06-08" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>Make cardano-submit-api REST API service available and run corresponding regression tests by default</li><li>Update cabal build testing for 8.0.0</li><li>Add support for testing governance SPO poll</li><li>Use Poetry for Python dependency management</li><li>Check status of known GH issues during tests runtime and finish the test accordingly</li><li>Generate topology files with both IP addresses and DNS names</li><li>Log issues like failure to start a cluster instance and report errors during tests runtime</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="testing-improvements">Testing improvements<a class="hash-link" href="#testing-improvements" title="Direct link to heading">​</a></h3><ul><li>Add rollback testing:<ol><li>global consensus is reached after rollback, in situation where less than <code>securityParam</code> blocks were produced since cluster split</li><li>global consensus is not reached when more than <code>securityParam</code> blocks were produced, and the result is permanent fork</li></ol></li><li>Add tests to governance SPO poll commands</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_7.html" target="_blank" rel="noopener noreferrer">1.35.7</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_8_0_0.html" target="_blank" rel="noopener noreferrer">8.0.0</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-03-27-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-03-27T00:00:00.000Z" itemprop="datePublished">March 27, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/mkoura.png" alt="Martin Kourim"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/mkoura" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Martin Kourim</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Engineer</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>Since the last update (2023-1-13) we did more improvements on our Test Framework, added more automated tests, kept analyzing and fixing nightly jobs failures, tested the <em>1.35.5</em> and <em>1.35.6</em> releases (and their predecessing release candidates) and ran tests on branch with the <em>UTxO-HD</em> functionality.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>improvements in searching for unexpected error messages in log files during test run</li><li>added support for UTxO-HD testing</li><li>added support for the new P2P topology format</li><li>added local cluster variant that has the same properties as mainnet (epoch length, fees, etc.)</li><li>added preliminary support for the Conway era</li><li>added support for running tests on the <em>Preview</em> testnet</li></ul><p><a href="https://github.com/input-output-hk/cardano-node-tests/pulls?q=is%3Apr+is%3Aclosed+updated%3A2023-01-13..2023-03-26" target="_blank" rel="noopener noreferrer">Full list of closed PRs</a></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran tests on node branch with the UTxO-HD functionality</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_5.html" target="_blank" rel="noopener noreferrer">1.35.5</a> release</li><li>tested the <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/node/tag_1_35_6.html" target="_blank" rel="noopener noreferrer">1.35.6</a> release</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>improvements in db-sync sync tests</li><li>improvements in db-sync functional tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2023-01-13-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2023-01-13T00:00:00.000Z" itemprop="datePublished">January 13, 2023</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, ran some sanity tests related to the <em>P2P Single
+Relay</em> functionality.</p><p>We also update the Node &amp; DB-Sync sync tets to build with Nix as the prebuilt files are no longer available at PR level.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>extended the <em>cardano-node-tests</em> with the ability for anybody to fork the repo and <a href="https://input-output-hk.github.io/cardano-node-tests/readme.html" target="_blank" rel="noopener noreferrer">run all our System Tests on GitHub Actions</a></li><li>added 2 new nightly pipelines - nightly-mixed and nightly-p2p - <a href="https://input-output-hk.github.io/cardano-node-tests/test_results/nightly_system_tests.html" target="_blank" rel="noopener noreferrer">details here</a></li><li>some optimizations on how our regression tests are scheduled on pytest workers and how cluster instances are assigned to the tests;</li></ul><p><code>  === 743 passed, 67 skipped, 24 xfailed in 9166.64s (2:32:46) ===
+  to
+  === 753 passed, 67 skipped, 14 xfailed in 4654.80s (1:17:34) ===</code></p><h3 class="anchor anchorWithStickyNavbar_LWe7" id="node">Node:<a class="hash-link" href="#node" title="Direct link to heading">​</a></h3><ul><li>ran a couple of sanity runs of CLI a&amp; sync tests on a local branch with P2P Single Relay enabled</li><li>started the preparations for testing the next tag - <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.5_rc1/src_docs/source/test_results/node/tag_1_35_5_rc1.rst" target="_blank" rel="noopener noreferrer">details here</a></li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>some improvements on db-sync sync tests</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-12-01-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-12-01T00:00:00.000Z" itemprop="datePublished">December 1, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>During the last 2 weeks we did more improvements on our Test Framework, planned the testing of the <em>P2P Single
+Relay</em> functionality, and also tested some DB-Sync tags.</p><h2 class="anchor anchorWithStickyNavbar_LWe7" id="workstreams">Workstreams<a class="hash-link" href="#workstreams" title="Direct link to heading">​</a></h2><h3 class="anchor anchorWithStickyNavbar_LWe7" id="framework-improvements">Framework improvements:<a class="hash-link" href="#framework-improvements" title="Direct link to heading">​</a></h3><ul><li>moved the System Test CLI Pipelines from BuildKite to Github Actions</li><li>improved the reporting tools to support the rerun of the failled tests and update of the reports </li><li>added support for Github API in <a href="https://github.com/mkoura/report-aggregator" target="_blank" rel="noopener noreferrer">report-aggregator</a>, so reports will be generated from the GitHub nightly jobs from now on</li><li>added support for mixed topology - P2P, legacy, mixed topologies</li><li>planned the P2P Single Relay system test activities </li><li>added support to start regression tests with PV8 + better selection of tests</li></ul><h3 class="anchor anchorWithStickyNavbar_LWe7" id="db-sync">DB-Sync:<a class="hash-link" href="#db-sync" title="Direct link to heading">​</a></h3><ul><li>confirmed that DB-Sync release 13.0.5 is compatible with Node release 1.35.4 + Protocol Version 8 (on the Preview environment)</li><li>tested a couple db-sync tags - 13.1.0.0-rc1, 13.1.0.0-rc2</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><article class="margin-bottom--xl" itemprop="blogPost" itemscope="" itemtype="http://schema.org/BlogPosting"><header><h2 class="title_f1Hy" itemprop="headline"><a itemprop="url" href="/cardano-updates/2022-11-02-system-test">System Test Team Update</a></h2><div class="container_mt6G margin-vert--md"><time datetime="2022-11-02T00:00:00.000Z" itemprop="datePublished">November 2, 2022</time> · <!-- -->One min read</div><div class="margin-top--md margin-bottom--sm row"><div class="col col--6 authorCol_Hf19"><div class="avatar margin-bottom--sm"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" class="avatar__photo-link"><img class="avatar__photo" src="https://github.com/dorin100.png" alt="Dorin Solomon"></a><div class="avatar__intro" itemprop="author" itemscope="" itemtype="https://schema.org/Person"><div class="avatar__name"><a href="https://github.com/dorin100" target="_blank" rel="noopener noreferrer" itemprop="url"><span itemprop="name">Dorin Solomon</span></a></div><small class="avatar__subtitle" itemprop="description">System Test Team Lead</small></div></div></div></div></header><div class="markdown" itemprop="articleBody"><h2 class="anchor anchorWithStickyNavbar_LWe7" id="high-level-summary">High level summary<a class="hash-link" href="#high-level-summary" title="Direct link to heading">​</a></h2><p>We have been focused on:</p><ul><li>Fully opening our test results (on top of the existing tests &amp; tools):<br>See <a href="https://input-output-hk.github.io/cardano-node-tests/" target="_blank" rel="noopener noreferrer">cardano-node-tests webpage</a>.</li><li>Started to test and automate the new functionalities added in the <code>1.35.4-rc1</code> node tag<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/blob/tag_test_1.35.4_rc1/src_docs/source/test_results/node/tag_1_35_4_rc1.rst" target="_blank" rel="noopener noreferrer">test results tracking page</a>.</li><li>Made some improvements to the automated db-sync sync tests<br>See <a href="https://github.com/input-output-hk/cardano-node-tests/tree/db_sync_tests/db_sync_tests" target="_blank" rel="noopener noreferrer">db-sync tests</a>.</li><li>Multiple cleanups and updates to the cardano-node-tests framework</li><li>Updated the nightly pipelines for the cardano-node-tests after the Babbage HF</li></ul></div><footer class="row docusaurus-mt-lg"><div class="col"><b>Tags:</b><ul class="tags_jXut padding--none margin-left--sm"><li class="tag_QGVx"><a class="tag_zVej tagRegular_sFm0" href="/cardano-updates/tags/system-test">system-test</a></li></ul></div></footer></article><nav class="pagination-nav" aria-label="Blog list page navigation"></nav></main></div></div></div><footer class="footer footer--dark"><div class="container container-fluid"><div class="row footer__links"><div class="col footer__col"><div class="footer__title">Blog</div><ul class="footer__items clean-list"><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/">Home</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/archive">Archive</a></li><li class="footer__item"><a class="footer__link-item" href="/cardano-updates/tags">Tags</a></li></ul></div></div><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2023 Input Output Global, Inc. 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